23162 lines
980 KiB
JavaScript
23162 lines
980 KiB
JavaScript
#!/usr/bin/env rhino
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var window = {};
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/*! 2.7.0 */
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var JSHINT;
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if (typeof window === 'undefined') window = {};
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(function () {
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var require;
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require=(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
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var identifierStartTable = [];
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for (var i = 0; i < 128; i++) {
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identifierStartTable[i] =
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i === 36 || // $
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i >= 65 && i <= 90 || // A-Z
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i === 95 || // _
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i >= 97 && i <= 122; // a-z
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}
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var identifierPartTable = [];
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for (var i = 0; i < 128; i++) {
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identifierPartTable[i] =
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identifierStartTable[i] || // $, _, A-Z, a-z
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i >= 48 && i <= 57; // 0-9
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}
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module.exports = {
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asciiIdentifierStartTable: identifierStartTable,
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asciiIdentifierPartTable: identifierPartTable
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};
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},{}],2:[function(require,module,exports){
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var str = '768,769,770,771,772,773,774,775,776,777,778,779,780,781,782,783,784,785,786,787,788,789,790,791,792,793,794,795,796,797,798,799,800,801,802,803,804,805,806,807,808,809,810,811,812,813,814,815,816,817,818,819,820,821,822,823,824,825,826,827,828,829,830,831,832,833,834,835,836,837,838,839,840,841,842,843,844,845,846,847,848,849,850,851,852,853,854,855,856,857,858,859,860,861,862,863,864,865,866,867,868,869,870,871,872,873,874,875,876,877,878,879,1155,1156,1157,1158,1159,1425,1426,1427,1428,1429,1430,1431,1432,1433,1434,1435,1436,1437,1438,1439,1440,1441,1442,1443,1444,1445,1446,1447,1448,1449,1450,1451,1452,1453,1454,1455,1456,1457,1458,1459,1460,1461,1462,1463,1464,1465,1466,1467,1468,1469,1471,1473,1474,1476,1477,1479,1552,1553,1554,1555,1556,1557,1558,1559,1560,1561,1562,1611,1612,1613,1614,1615,1616,1617,1618,1619,1620,1621,1622,1623,1624,1625,1626,1627,1628,1629,1630,1631,1632,1633,1634,1635,1636,1637,1638,1639,1640,1641,1648,1750,1751,1752,1753,1754,1755,1756,1759,1760,1761,1762,1763,1764,1767,1768,1770,1771,1772,1773,1776,1777,1778,1779,1780,1781,1782,1783,1784,1785,1809,1840,1841,1842,1843,1844,1845,1846,1847,1848,1849,1850,1851,1852,1853,1854,1855,1856,1857,1858,1859,1860,1861,1862,1863,1864,1865,1866,1958,1959,1960,1961,1962,1963,1964,1965,1966,1967,1968,1984,1985,1986,1987,1988,1989,1990,1991,1992,1993,2027,2028,2029,2030,2031,2032,2033,2034,2035,2070,2071,2072,2073,2075,2076,2077,2078,2079,2080,2081,2082,2083,2085,2086,2087,2089,2090,2091,2092,2093,2137,2138,2139,2276,2277,2278,2279,2280,2281,2282,2283,2284,2285,2286,2287,2288,2289,2290,2291,2292,2293,2294,2295,2296,2297,2298,2299,2300,2301,2302,2304,2305,2306,2307,2362,2363,2364,2366,2367,2368,2369,2370,2371,2372,2373,2374,2375,2376,2377,2378,2379,2380,2381,2382,2383,2385,2386,2387,2388,2389,2390,2391,2402,2403,2406,2407,2408,2409,2410,2411,2412,2413,2414,2415,2433,2434,2435,2492,2494,2495,2496,2497,2498,2499,2500,2503,2504,2507,2508,2509,2519,2530,2531,2534,2535,2536,2537,2538,2539,2540,2541,2542,2543,2561,2562,2563,2620,2622,2623,2624,2625,2626,2631,2632,2635,2636,2637,2641,2662,2663,2664,2665,2666,2667,2668,2669,2670,2671,2672,2673,2677,2689,2690,2691,2748,2750,2751,2752,2753,2754,2755,2756,2757,2759,2760,2761,2763,2764,2765,2786,2787,2790,2791,2792,2793,2794,2795,2796,2797,2798,2799,2817,2818,2819,2876,2878,2879,2880,2881,2882,2883,2884,2887,2888,2891,2892,2893,2902,2903,2914,2915,2918,2919,2920,2921,2922,2923,2924,2925,2926,2927,2946,3006,3007,3008,3009,3010,3014,3015,3016,3018,3019,3020,3021,3031,3046,3047,3048,3049,3050,3051,3052,3053,3054,3055,3073,3074,3075,3134,3135,3136,3137,3138,3139,3140,3142,3143,3144,3146,3147,3148,3149,3157,3158,3170,3171,3174,3175,3176,3177,3178,3179,3180,3181,3182,3183,3202,3203,3260,3262,3263,3264,3265,3266,3267,3268,3270,3271,3272,3274,3275,3276,3277,3285,3286,3298,3299,3302,3303,3304,3305,3306,3307,3308,3309,3310,3311,3330,3331,3390,3391,3392,3393,3394,3395,3396,3398,3399,3400,3402,3403,3404,3405,3415,3426,3427,3430,3431,3432,3433,3434,3435,3436,3437,3438,3439,3458,3459,3530,3535,3536,3537,3538,3539,3540,3542,3544,3545,3546,3547,3548,3549,3550,3551,3570,3571,3633,3636,3637,3638,3639,3640,3641,3642,3655,3656,3657,3658,3659,3660,3661,3662,3664,3665,3666,3667,3668,3669,3670,3671,3672,3673,3761,3764,3765,3766,3767,3768,3769,3771,3772,3784,3785,3786,3787,3788,3789,3792,3793,3794,3795,3796,3797,3798,3799,3800,3801,3864,3865,3872,3873,3874,3875,3876,3877,3878,3879,3880,3881,3893,3895,3897,3902,3903,3953,3954,3955,3956,3957,3958,3959,3960,3961,3962,3963,3964,3965,3966,3967,3968,3969,3970,3971,3972,3974,3975,3981,3982,3983,3984,3985,3986,3987,3988,3989,3990,3991,3993,3994,3995,3996,3997,3998,3999,4000,4001,4002,4003,4004,4005,4006,4007,4008,4009,4010,4011,4012,4013,4014,4015,4016,4017,4018,4019,4020,4021,4022,4023,4024,4025,4026,4027,4028,4038,4139,4140,4141,4142,4143,4144,4145,4146,4147,4148,4149,4150,4151,4152,4153,4154,4155,4156,4157,4158,4160,4161,4162,4163,4164,4165,4166,4167,4168,4169,4182,4183,4184,4185,4190,4191,4192,4194,4195,4196,4199,4200,4201,4202,4203,4204,4205,4209,4210,4211,4212,4226,4227,4228,4229,4230,4231,4232,4233,4234,4235,4236,4237,4239,4240,4241,4242,4243,4244,4245,4246,4247,4248,4249,4250,4251,4252,4253,4957,4958,4959,5906,5907,5908,5938,5939,5940,5970,5971,6002,6003,6068,6069,6070,6071,6072,6073,6074,6075,6076,6077,6078,6079,6080,6081,6082,6083,6084,6085,6086,6087,6088,6089,6090,6091,6092,6093,6094,6095,6096,6097,6098,6099,6109,6112,6113,6114,6115,6116,6117,6118,6119,6120,6121,6155,6156,6157,6160,6161,6162,6163,6164,6165,6166,6167,6168,6169,6313,6432,6433,6434,6435,6436,6437,6438,6439,6440,6441,6442,6443,6448,6449,6450,6451,6452,6453,6454,6455,6456,6457,6458,6459,6470,6471,6472,6473,6474,6475,6476,6477,6478,6479,6576,6577,6578,6579,6580,6581,6582,6583,6584,6585,6586,6587,6588,6589,6590,6591,6592,6600,6601,6608,6609,6610,6611,6612,6613,6614,6615,6616,6617,6679,6680,6681,6682,6683,6741,6742,6743,6744,6745,6746,6747,6748,6749,6750,6752,6753,6754,6755,6756,6757,6758,6759,6760,6761,6762,6763,6764,6765,6766,6767,6768,6769,6770,6771,6772,6773,6774,6775,6776,6777,6778,6779,6780,6783,6784,6785,6786,6787,6788,6789,6790,6791,6792,6793,6800,6801,6802,6803,6804,6805,6806,6807,6808,6809,6912,6913,6914,6915,6916,6964,6965,6966,6967,6968,6969,6970,6971,6972,6973,6974,6975,6976,6977,6978,6979,6980,6992,6993,6994,6995,6996,6997,6998,6999,7000,7001,7019,7020,7021,7022,7023,7024,7025,7026,7027,7040,7041,7042,7073,7074,7075,7076,7077,7078,7079,7080,7081,7082,7083,7084,7085,7088,7089,7090,7091,7092,7093,7094,7095,7096,7097,7142,7143,7144,7145,7146,7147,7148,7149,7150,7151,7152,7153,7154,7155,7204,7205,7206,7207,7208,7209,7210,7211,7212,7213,7214,7215,7216,7217,7218,7219,7220,7221,7222,7223,7232,7233,7234,7235,7236,7237,7238,7239,7240,7241,7248,7249,7250,7251,7252,7253,7254,7255,7256,7257,7376,7377,7378,7380,7381,7382,7383,7384,7385,7386,7387,7388,7389,7390,7391,7392,7393,7394,7395,7396,7397,7398,7399,7400,7405,7410,7411,7412,7616,7617,7618,7619,7620,7621,7622,7623,7624,7625,7626,7627,7628,7629,7630,7631,7632,7633,7634,7635,7636,7637,7638,7639,7640,7641,7642,7643,7644,7645,7646,7647,7648,7649,7650,7651,7652,7653,7654,7676,7677,7678,7679,8204,8205,8255,8256,8276,8400,8401,8402,8403,8404,8405,8406,8407,8408,8409,8410,8411,8412,8417,8421,8422,8423,8424,8425,8426,8427,8428,8429,8430,8431,8432,11503,11504,11505,11647,11744,11745,11746,11747,11748,11749,11750,11751,11752,11753,11754,11755,11756,11757,11758,11759,11760,11761,11762,11763,11764,11765,11766,11767,11768,11769,11770,11771,11772,11773,11774,11775,12330,12331,12332,12333,12334,12335,12441,12442,42528,42529,42530,42531,42532,42533,42534,42535,42536,42537,42607,42612,42613,42614,42615,42616,42617,42618,42619,42620,42621,42655,42736,42737,43010,43014,43019,43043,43044,43045,43046,43047,43136,43137,43188,43189,43190,43191,43192,43193,43194,43195,43196,43197,43198,43199,43200,43201,43202,43203,43204,43216,43217,43218,43219,43220,43221,43222,43223,43224,43225,43232,43233,43234,43235,43236,43237,43238,43239,43240,43241,43242,43243,43244,43245,43246,43247,43248,43249,43264,43265,43266,43267,43268,43269,43270,43271,43272,43273,43302,43303,43304,43305,43306,43307,43308,43309,43335,43336,43337,43338,43339,43340,43341,43342,43343,43344,43345,43346,43347,43392,43393,43394,43395,43443,43444,43445,43446,43447,43448,43449,43450,43451,43452,43453,43454,43455,43456,43472,43473,43474,43475,43476,43477,43478,43479,43480,43481,43561,43562,43563,43564,43565,43566,43567,43568,43569,43570,43571,43572,43573,43574,43587,43596,43597,43600,43601,43602,43603,43604,43605,43606,43607,43608,43609,43643,43696,43698,43699,43700,43703,43704,43710,43711,43713,43755,43756,43757,43758,43759,43765,43766,44003,44004,44005,44006,44007,44008,44009,44010,44012,44013,44016,44017,44018,44019,44020,44021,44022,44023,44024,44025,64286,65024,65025,65026,65027,65028,65029,65030,65031,65032,65033,65034,65035,65036,65037,65038,65039,65056,65057,65058,65059,65060,65061,65062,65075,65076,65101,65102,65103,65296,65297,65298,65299,65300,65301,65302,65303,65304,65305,65343';
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var arr = str.split(',').map(function(code) {
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return parseInt(code, 10);
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});
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module.exports = arr;
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},{}],3:[function(require,module,exports){
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var str = 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6,64397,64398,64399,64400,64401,64402,64403,64404,64405,64406,64407,64408,64409,64410,64411,64412,64413,64414,64415,64416,64417,64418,64419,64420,64421,64422,64423,64424,64425,64426,64427,64428,64429,64430,64431,64432,64433,64467,64468,64469,64470,64471,64472,64473,64474,64475,64476,64477,64478,64479,64480,64481,64482,64483,64484,64485,64486,64487,64488,64489,64490,64491,64492,64493,64494,64495,64496,64497,64498,64499,64500,64501,64502,64503,64504,64505,64506,64507,64508,64509,64510,64511,64512,64513,64514,64515,64516,64517,64518,64519,64520,64521,64522,64523,64524,64525,64526,64527,64528,64529,64530,64531,64532,64533,64534,64535,64536,64537,64538,64539,64540,64541,64542,64543,64544,64545,64546,64547,64548,64549,64550,64551,64552,64553,64554,64555,64556,64557,64558,64559,64560,64561,64562,64563,64564,64565,64566,64567,64568,64569,64570,64571,64572,64573,64574,64575,64576,64577,64578,64579,64580,64581,64582,64583,64584,64585,64586,64587,64588,64589,64590,64591,64592,64593,64594,64595,64596,64597,64598,64599,64600,64601,64602,64603,64604,64605,64606,64607,64608,64609,64610,64611,64612,64613,64614,64615,64616,64617,64618,64619,64620,64621,64622,64623,64624,64625,64626,64627,64628,64629,64630,64631,64632,64633,64634,64635,64636,64637,64638,64639,64640,64641,64642,64643,64644,64645,64646,64647,64648,64649,64650,64651,64652,64653,64654,64655,64656,64657,64658,64659,64660,64661,64662,64663,64664,64665,64666,64667,64668,64669,64670,64671,64672,64673,64674,64675,64676,64677,64678,64679,64680,64681,64682,64683,64684,64685,64686,64687,64688,64689,64690,64691,64692,64693,64694,64695,64696,64697,64698,64699,64700,64701,64702,64703,64704,64705,64706,64707,64708,64709,64710,64711,64712,64713,64714,64715,64716,64717,64718,64719,64720,64721,64722,64723,64724,64725,64726,64727,64728,64729,64730,64731,64732,64733,64734,64735,64736,64737,64738,64739,64740,64741,64742,64743,64744,64745,64746,64747,64748,64749,64750,64751,64752,64753,64754,64755,64756,64757,64758,64759,64760,64761,64762,64763,64764,64765,64766,64767,64768,64769,64770,64771,64772,64773,64774,64775,64776,64777,64778,64779,64780,64781,64782,64783,64784,64785,64786,64787,64788,64789,64790,64791,64792,64793,64794,64795,64796,64797,64798,64799,64800,64801,64802,64803,64804,64805,64806,64807,64808,64809,64810,64811,64812,64813,64814,64815,64816,64817,64818,64819,64820,64821,64822,64823,64824,64825,64826,64827,64828,64829,64848,64849,64850,64851,64852,64853,64854,64855,64856,64857,64858,64859,64860,64861,64862,64863,64864,64865,64866,64867,64868,64869,64870,64871,64872,64873,64874,64875,64876,64877,64878,64879,64880,64881,64882,64883,64884,64885,64886,64887,64888,64889,64890,64891,64892,64893,64894,64895,64896,64897,64898,64899,64900,64901,64902,64903,64904,64905,64906,64907,64908,64909,64910,64911,64914,64915,64916,64917,64918,64919,64920,64921,64922,64923,64924,64925,64926,64927,64928,64929,64930,64931,64932,64933,64934,64935,64936,64937,64938,64939,64940,64941,64942,64943,64944,64945,64946,64947,64948,64949,64950,64951,64952,64953,64954,64955,64956,64957,64958,64959,64960,64961,64962,64963,64964,64965,64966,64967,65008,65009,65010,65011,65012,65013,65014,65015,65016,65017,65018,65019,65136,65137,65138,65139,65140,65142,65143,65144,65145,65146,65147,65148,65149,65150,65151,65152,65153,65154,65155,65156,65157,65158,65159,65160,65161,65162,65163,65164,65165,65166,65167,65168,65169,65170,65171,65172,65173,65174,65175,65176,65177,65178,65179,65180,65181,65182,65183,65184,65185,65186,65187,65188,65189,65190,65191,65192,65193,65194,65195,65196,65197,65198,65199,65200,65201,65202,65203,65204,65205,65206,65207,65208,65209,65210,65211,65212,65213,65214,65215,65216,65217,65218,65219,65220,65221,65222,65223,65224,65225,65226,65227,65228,65229,65230,65231,65232,65233,65234,65235,65236,65237,65238,65239,65240,65241,65242,65243,65244,65245,65246,65247,65248,65249,65250,65251,65252,65253,65254,65255,65256,65257,65258,65259,65260,65261,65262,65263,65264,65265,65266,65267,65268,65269,65270,65271,65272,65273,65274,65275,65276,65313,65314,65315,65316,65317,65318,65319,65320,65321,65322,65323,65324,65325,65326,65327,65328,65329,65330,65331,65332,65333,65334,65335,65336,65337,65338,65345,65346,65347,65348,65349,65350,65351,65352,65353,65354,65355,65356,65357,65358,65359,65360,65361,65362,65363,65364,65365,65366,65367,65368,65369,65370,65382,65383,65384,65385,65386,65387,65388,65389,65390,65391,65392,65393,65394,65395,65396,65397,65398,65399,65400,65401,65402,65403,65404,65405,65406,65407,65408,65409,65410,65411,65412,65413,65414,65415,65416,65417,65418,65419,65420,65421,65422,65423,65424,65425,65426,65427,65428,65429,65430,65431,65432,65433,65434,65435,65436,65437,65438,65439,65440,65441,65442,65443,65444,65445,65446,65447,65448,65449,65450,65451,65452,65453,65454,65455,65456,65457,65458,65459,65460,65461,65462,65463,65464,65465,65466,65467,65468,65469,65470,65474,65475,65476,65477,65478,65479,65482,65483,65484,65485,65486,65487,65490,65491,65492,65493,65494,65495,65498,65499,65500';
|
|
var arr = str.split(',').map(function(code) {
|
|
return parseInt(code, 10);
|
|
});
|
|
module.exports = arr;
|
|
},{}],4:[function(require,module,exports){
|
|
// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
|
|
//
|
|
// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
|
|
//
|
|
// Originally from narwhal.js (http://narwhaljs.org)
|
|
// Copyright (c) 2009 Thomas Robinson <280north.com>
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the 'Software'), to
|
|
// deal in the Software without restriction, including without limitation the
|
|
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
|
|
// sell copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in
|
|
// all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
// when used in node, this will actually load the util module we depend on
|
|
// versus loading the builtin util module as happens otherwise
|
|
// this is a bug in node module loading as far as I am concerned
|
|
var util = require('util/');
|
|
|
|
var pSlice = Array.prototype.slice;
|
|
var hasOwn = Object.prototype.hasOwnProperty;
|
|
|
|
// 1. The assert module provides functions that throw
|
|
// AssertionError's when particular conditions are not met. The
|
|
// assert module must conform to the following interface.
|
|
|
|
var assert = module.exports = ok;
|
|
|
|
// 2. The AssertionError is defined in assert.
|
|
// new assert.AssertionError({ message: message,
|
|
// actual: actual,
|
|
// expected: expected })
|
|
|
|
assert.AssertionError = function AssertionError(options) {
|
|
this.name = 'AssertionError';
|
|
this.actual = options.actual;
|
|
this.expected = options.expected;
|
|
this.operator = options.operator;
|
|
if (options.message) {
|
|
this.message = options.message;
|
|
this.generatedMessage = false;
|
|
} else {
|
|
this.message = getMessage(this);
|
|
this.generatedMessage = true;
|
|
}
|
|
var stackStartFunction = options.stackStartFunction || fail;
|
|
|
|
if (Error.captureStackTrace) {
|
|
Error.captureStackTrace(this, stackStartFunction);
|
|
}
|
|
else {
|
|
// non v8 browsers so we can have a stacktrace
|
|
var err = new Error();
|
|
if (err.stack) {
|
|
var out = err.stack;
|
|
|
|
// try to strip useless frames
|
|
var fn_name = stackStartFunction.name;
|
|
var idx = out.indexOf('\n' + fn_name);
|
|
if (idx >= 0) {
|
|
// once we have located the function frame
|
|
// we need to strip out everything before it (and its line)
|
|
var next_line = out.indexOf('\n', idx + 1);
|
|
out = out.substring(next_line + 1);
|
|
}
|
|
|
|
this.stack = out;
|
|
}
|
|
}
|
|
};
|
|
|
|
// assert.AssertionError instanceof Error
|
|
util.inherits(assert.AssertionError, Error);
|
|
|
|
function replacer(key, value) {
|
|
if (util.isUndefined(value)) {
|
|
return '' + value;
|
|
}
|
|
if (util.isNumber(value) && !isFinite(value)) {
|
|
return value.toString();
|
|
}
|
|
if (util.isFunction(value) || util.isRegExp(value)) {
|
|
return value.toString();
|
|
}
|
|
return value;
|
|
}
|
|
|
|
function truncate(s, n) {
|
|
if (util.isString(s)) {
|
|
return s.length < n ? s : s.slice(0, n);
|
|
} else {
|
|
return s;
|
|
}
|
|
}
|
|
|
|
function getMessage(self) {
|
|
return truncate(JSON.stringify(self.actual, replacer), 128) + ' ' +
|
|
self.operator + ' ' +
|
|
truncate(JSON.stringify(self.expected, replacer), 128);
|
|
}
|
|
|
|
// At present only the three keys mentioned above are used and
|
|
// understood by the spec. Implementations or sub modules can pass
|
|
// other keys to the AssertionError's constructor - they will be
|
|
// ignored.
|
|
|
|
// 3. All of the following functions must throw an AssertionError
|
|
// when a corresponding condition is not met, with a message that
|
|
// may be undefined if not provided. All assertion methods provide
|
|
// both the actual and expected values to the assertion error for
|
|
// display purposes.
|
|
|
|
function fail(actual, expected, message, operator, stackStartFunction) {
|
|
throw new assert.AssertionError({
|
|
message: message,
|
|
actual: actual,
|
|
expected: expected,
|
|
operator: operator,
|
|
stackStartFunction: stackStartFunction
|
|
});
|
|
}
|
|
|
|
// EXTENSION! allows for well behaved errors defined elsewhere.
|
|
assert.fail = fail;
|
|
|
|
// 4. Pure assertion tests whether a value is truthy, as determined
|
|
// by !!guard.
|
|
// assert.ok(guard, message_opt);
|
|
// This statement is equivalent to assert.equal(true, !!guard,
|
|
// message_opt);. To test strictly for the value true, use
|
|
// assert.strictEqual(true, guard, message_opt);.
|
|
|
|
function ok(value, message) {
|
|
if (!value) fail(value, true, message, '==', assert.ok);
|
|
}
|
|
assert.ok = ok;
|
|
|
|
// 5. The equality assertion tests shallow, coercive equality with
|
|
// ==.
|
|
// assert.equal(actual, expected, message_opt);
|
|
|
|
assert.equal = function equal(actual, expected, message) {
|
|
if (actual != expected) fail(actual, expected, message, '==', assert.equal);
|
|
};
|
|
|
|
// 6. The non-equality assertion tests for whether two objects are not equal
|
|
// with != assert.notEqual(actual, expected, message_opt);
|
|
|
|
assert.notEqual = function notEqual(actual, expected, message) {
|
|
if (actual == expected) {
|
|
fail(actual, expected, message, '!=', assert.notEqual);
|
|
}
|
|
};
|
|
|
|
// 7. The equivalence assertion tests a deep equality relation.
|
|
// assert.deepEqual(actual, expected, message_opt);
|
|
|
|
assert.deepEqual = function deepEqual(actual, expected, message) {
|
|
if (!_deepEqual(actual, expected)) {
|
|
fail(actual, expected, message, 'deepEqual', assert.deepEqual);
|
|
}
|
|
};
|
|
|
|
function _deepEqual(actual, expected) {
|
|
// 7.1. All identical values are equivalent, as determined by ===.
|
|
if (actual === expected) {
|
|
return true;
|
|
|
|
} else if (util.isBuffer(actual) && util.isBuffer(expected)) {
|
|
if (actual.length != expected.length) return false;
|
|
|
|
for (var i = 0; i < actual.length; i++) {
|
|
if (actual[i] !== expected[i]) return false;
|
|
}
|
|
|
|
return true;
|
|
|
|
// 7.2. If the expected value is a Date object, the actual value is
|
|
// equivalent if it is also a Date object that refers to the same time.
|
|
} else if (util.isDate(actual) && util.isDate(expected)) {
|
|
return actual.getTime() === expected.getTime();
|
|
|
|
// 7.3 If the expected value is a RegExp object, the actual value is
|
|
// equivalent if it is also a RegExp object with the same source and
|
|
// properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
|
|
} else if (util.isRegExp(actual) && util.isRegExp(expected)) {
|
|
return actual.source === expected.source &&
|
|
actual.global === expected.global &&
|
|
actual.multiline === expected.multiline &&
|
|
actual.lastIndex === expected.lastIndex &&
|
|
actual.ignoreCase === expected.ignoreCase;
|
|
|
|
// 7.4. Other pairs that do not both pass typeof value == 'object',
|
|
// equivalence is determined by ==.
|
|
} else if (!util.isObject(actual) && !util.isObject(expected)) {
|
|
return actual == expected;
|
|
|
|
// 7.5 For all other Object pairs, including Array objects, equivalence is
|
|
// determined by having the same number of owned properties (as verified
|
|
// with Object.prototype.hasOwnProperty.call), the same set of keys
|
|
// (although not necessarily the same order), equivalent values for every
|
|
// corresponding key, and an identical 'prototype' property. Note: this
|
|
// accounts for both named and indexed properties on Arrays.
|
|
} else {
|
|
return objEquiv(actual, expected);
|
|
}
|
|
}
|
|
|
|
function isArguments(object) {
|
|
return Object.prototype.toString.call(object) == '[object Arguments]';
|
|
}
|
|
|
|
function objEquiv(a, b) {
|
|
if (util.isNullOrUndefined(a) || util.isNullOrUndefined(b))
|
|
return false;
|
|
// an identical 'prototype' property.
|
|
if (a.prototype !== b.prototype) return false;
|
|
// if one is a primitive, the other must be same
|
|
if (util.isPrimitive(a) || util.isPrimitive(b)) {
|
|
return a === b;
|
|
}
|
|
var aIsArgs = isArguments(a),
|
|
bIsArgs = isArguments(b);
|
|
if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs))
|
|
return false;
|
|
if (aIsArgs) {
|
|
a = pSlice.call(a);
|
|
b = pSlice.call(b);
|
|
return _deepEqual(a, b);
|
|
}
|
|
var ka = objectKeys(a),
|
|
kb = objectKeys(b),
|
|
key, i;
|
|
// having the same number of owned properties (keys incorporates
|
|
// hasOwnProperty)
|
|
if (ka.length != kb.length)
|
|
return false;
|
|
//the same set of keys (although not necessarily the same order),
|
|
ka.sort();
|
|
kb.sort();
|
|
//~~~cheap key test
|
|
for (i = ka.length - 1; i >= 0; i--) {
|
|
if (ka[i] != kb[i])
|
|
return false;
|
|
}
|
|
//equivalent values for every corresponding key, and
|
|
//~~~possibly expensive deep test
|
|
for (i = ka.length - 1; i >= 0; i--) {
|
|
key = ka[i];
|
|
if (!_deepEqual(a[key], b[key])) return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// 8. The non-equivalence assertion tests for any deep inequality.
|
|
// assert.notDeepEqual(actual, expected, message_opt);
|
|
|
|
assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
|
|
if (_deepEqual(actual, expected)) {
|
|
fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
|
|
}
|
|
};
|
|
|
|
// 9. The strict equality assertion tests strict equality, as determined by ===.
|
|
// assert.strictEqual(actual, expected, message_opt);
|
|
|
|
assert.strictEqual = function strictEqual(actual, expected, message) {
|
|
if (actual !== expected) {
|
|
fail(actual, expected, message, '===', assert.strictEqual);
|
|
}
|
|
};
|
|
|
|
// 10. The strict non-equality assertion tests for strict inequality, as
|
|
// determined by !==. assert.notStrictEqual(actual, expected, message_opt);
|
|
|
|
assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
|
|
if (actual === expected) {
|
|
fail(actual, expected, message, '!==', assert.notStrictEqual);
|
|
}
|
|
};
|
|
|
|
function expectedException(actual, expected) {
|
|
if (!actual || !expected) {
|
|
return false;
|
|
}
|
|
|
|
if (Object.prototype.toString.call(expected) == '[object RegExp]') {
|
|
return expected.test(actual);
|
|
} else if (actual instanceof expected) {
|
|
return true;
|
|
} else if (expected.call({}, actual) === true) {
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
function _throws(shouldThrow, block, expected, message) {
|
|
var actual;
|
|
|
|
if (util.isString(expected)) {
|
|
message = expected;
|
|
expected = null;
|
|
}
|
|
|
|
try {
|
|
block();
|
|
} catch (e) {
|
|
actual = e;
|
|
}
|
|
|
|
message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
|
|
(message ? ' ' + message : '.');
|
|
|
|
if (shouldThrow && !actual) {
|
|
fail(actual, expected, 'Missing expected exception' + message);
|
|
}
|
|
|
|
if (!shouldThrow && expectedException(actual, expected)) {
|
|
fail(actual, expected, 'Got unwanted exception' + message);
|
|
}
|
|
|
|
if ((shouldThrow && actual && expected &&
|
|
!expectedException(actual, expected)) || (!shouldThrow && actual)) {
|
|
throw actual;
|
|
}
|
|
}
|
|
|
|
// 11. Expected to throw an error:
|
|
// assert.throws(block, Error_opt, message_opt);
|
|
|
|
assert.throws = function(block, /*optional*/error, /*optional*/message) {
|
|
_throws.apply(this, [true].concat(pSlice.call(arguments)));
|
|
};
|
|
|
|
// EXTENSION! This is annoying to write outside this module.
|
|
assert.doesNotThrow = function(block, /*optional*/message) {
|
|
_throws.apply(this, [false].concat(pSlice.call(arguments)));
|
|
};
|
|
|
|
assert.ifError = function(err) { if (err) {throw err;}};
|
|
|
|
var objectKeys = Object.keys || function (obj) {
|
|
var keys = [];
|
|
for (var key in obj) {
|
|
if (hasOwn.call(obj, key)) keys.push(key);
|
|
}
|
|
return keys;
|
|
};
|
|
|
|
},{"util/":9}],5:[function(require,module,exports){
|
|
// Copyright Joyent, Inc. and other Node contributors.
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a
|
|
// copy of this software and associated documentation files (the
|
|
// "Software"), to deal in the Software without restriction, including
|
|
// without limitation the rights to use, copy, modify, merge, publish,
|
|
// distribute, sublicense, and/or sell copies of the Software, and to permit
|
|
// persons to whom the Software is furnished to do so, subject to the
|
|
// following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included
|
|
// in all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
|
|
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
|
|
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
|
|
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
|
|
// USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
function EventEmitter() {
|
|
this._events = this._events || {};
|
|
this._maxListeners = this._maxListeners || undefined;
|
|
}
|
|
module.exports = EventEmitter;
|
|
|
|
// Backwards-compat with node 0.10.x
|
|
EventEmitter.EventEmitter = EventEmitter;
|
|
|
|
EventEmitter.prototype._events = undefined;
|
|
EventEmitter.prototype._maxListeners = undefined;
|
|
|
|
// By default EventEmitters will print a warning if more than 10 listeners are
|
|
// added to it. This is a useful default which helps finding memory leaks.
|
|
EventEmitter.defaultMaxListeners = 10;
|
|
|
|
// Obviously not all Emitters should be limited to 10. This function allows
|
|
// that to be increased. Set to zero for unlimited.
|
|
EventEmitter.prototype.setMaxListeners = function(n) {
|
|
if (!isNumber(n) || n < 0 || isNaN(n))
|
|
throw TypeError('n must be a positive number');
|
|
this._maxListeners = n;
|
|
return this;
|
|
};
|
|
|
|
EventEmitter.prototype.emit = function(type) {
|
|
var er, handler, len, args, i, listeners;
|
|
|
|
if (!this._events)
|
|
this._events = {};
|
|
|
|
// If there is no 'error' event listener then throw.
|
|
if (type === 'error') {
|
|
if (!this._events.error ||
|
|
(isObject(this._events.error) && !this._events.error.length)) {
|
|
er = arguments[1];
|
|
if (er instanceof Error) {
|
|
throw er; // Unhandled 'error' event
|
|
}
|
|
throw TypeError('Uncaught, unspecified "error" event.');
|
|
}
|
|
}
|
|
|
|
handler = this._events[type];
|
|
|
|
if (isUndefined(handler))
|
|
return false;
|
|
|
|
if (isFunction(handler)) {
|
|
switch (arguments.length) {
|
|
// fast cases
|
|
case 1:
|
|
handler.call(this);
|
|
break;
|
|
case 2:
|
|
handler.call(this, arguments[1]);
|
|
break;
|
|
case 3:
|
|
handler.call(this, arguments[1], arguments[2]);
|
|
break;
|
|
// slower
|
|
default:
|
|
len = arguments.length;
|
|
args = new Array(len - 1);
|
|
for (i = 1; i < len; i++)
|
|
args[i - 1] = arguments[i];
|
|
handler.apply(this, args);
|
|
}
|
|
} else if (isObject(handler)) {
|
|
len = arguments.length;
|
|
args = new Array(len - 1);
|
|
for (i = 1; i < len; i++)
|
|
args[i - 1] = arguments[i];
|
|
|
|
listeners = handler.slice();
|
|
len = listeners.length;
|
|
for (i = 0; i < len; i++)
|
|
listeners[i].apply(this, args);
|
|
}
|
|
|
|
return true;
|
|
};
|
|
|
|
EventEmitter.prototype.addListener = function(type, listener) {
|
|
var m;
|
|
|
|
if (!isFunction(listener))
|
|
throw TypeError('listener must be a function');
|
|
|
|
if (!this._events)
|
|
this._events = {};
|
|
|
|
// To avoid recursion in the case that type === "newListener"! Before
|
|
// adding it to the listeners, first emit "newListener".
|
|
if (this._events.newListener)
|
|
this.emit('newListener', type,
|
|
isFunction(listener.listener) ?
|
|
listener.listener : listener);
|
|
|
|
if (!this._events[type])
|
|
// Optimize the case of one listener. Don't need the extra array object.
|
|
this._events[type] = listener;
|
|
else if (isObject(this._events[type]))
|
|
// If we've already got an array, just append.
|
|
this._events[type].push(listener);
|
|
else
|
|
// Adding the second element, need to change to array.
|
|
this._events[type] = [this._events[type], listener];
|
|
|
|
// Check for listener leak
|
|
if (isObject(this._events[type]) && !this._events[type].warned) {
|
|
var m;
|
|
if (!isUndefined(this._maxListeners)) {
|
|
m = this._maxListeners;
|
|
} else {
|
|
m = EventEmitter.defaultMaxListeners;
|
|
}
|
|
|
|
if (m && m > 0 && this._events[type].length > m) {
|
|
this._events[type].warned = true;
|
|
console.error('(node) warning: possible EventEmitter memory ' +
|
|
'leak detected. %d listeners added. ' +
|
|
'Use emitter.setMaxListeners() to increase limit.',
|
|
this._events[type].length);
|
|
if (typeof console.trace === 'function') {
|
|
// not supported in IE 10
|
|
console.trace();
|
|
}
|
|
}
|
|
}
|
|
|
|
return this;
|
|
};
|
|
|
|
EventEmitter.prototype.on = EventEmitter.prototype.addListener;
|
|
|
|
EventEmitter.prototype.once = function(type, listener) {
|
|
if (!isFunction(listener))
|
|
throw TypeError('listener must be a function');
|
|
|
|
var fired = false;
|
|
|
|
function g() {
|
|
this.removeListener(type, g);
|
|
|
|
if (!fired) {
|
|
fired = true;
|
|
listener.apply(this, arguments);
|
|
}
|
|
}
|
|
|
|
g.listener = listener;
|
|
this.on(type, g);
|
|
|
|
return this;
|
|
};
|
|
|
|
// emits a 'removeListener' event iff the listener was removed
|
|
EventEmitter.prototype.removeListener = function(type, listener) {
|
|
var list, position, length, i;
|
|
|
|
if (!isFunction(listener))
|
|
throw TypeError('listener must be a function');
|
|
|
|
if (!this._events || !this._events[type])
|
|
return this;
|
|
|
|
list = this._events[type];
|
|
length = list.length;
|
|
position = -1;
|
|
|
|
if (list === listener ||
|
|
(isFunction(list.listener) && list.listener === listener)) {
|
|
delete this._events[type];
|
|
if (this._events.removeListener)
|
|
this.emit('removeListener', type, listener);
|
|
|
|
} else if (isObject(list)) {
|
|
for (i = length; i-- > 0;) {
|
|
if (list[i] === listener ||
|
|
(list[i].listener && list[i].listener === listener)) {
|
|
position = i;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (position < 0)
|
|
return this;
|
|
|
|
if (list.length === 1) {
|
|
list.length = 0;
|
|
delete this._events[type];
|
|
} else {
|
|
list.splice(position, 1);
|
|
}
|
|
|
|
if (this._events.removeListener)
|
|
this.emit('removeListener', type, listener);
|
|
}
|
|
|
|
return this;
|
|
};
|
|
|
|
EventEmitter.prototype.removeAllListeners = function(type) {
|
|
var key, listeners;
|
|
|
|
if (!this._events)
|
|
return this;
|
|
|
|
// not listening for removeListener, no need to emit
|
|
if (!this._events.removeListener) {
|
|
if (arguments.length === 0)
|
|
this._events = {};
|
|
else if (this._events[type])
|
|
delete this._events[type];
|
|
return this;
|
|
}
|
|
|
|
// emit removeListener for all listeners on all events
|
|
if (arguments.length === 0) {
|
|
for (key in this._events) {
|
|
if (key === 'removeListener') continue;
|
|
this.removeAllListeners(key);
|
|
}
|
|
this.removeAllListeners('removeListener');
|
|
this._events = {};
|
|
return this;
|
|
}
|
|
|
|
listeners = this._events[type];
|
|
|
|
if (isFunction(listeners)) {
|
|
this.removeListener(type, listeners);
|
|
} else {
|
|
// LIFO order
|
|
while (listeners.length)
|
|
this.removeListener(type, listeners[listeners.length - 1]);
|
|
}
|
|
delete this._events[type];
|
|
|
|
return this;
|
|
};
|
|
|
|
EventEmitter.prototype.listeners = function(type) {
|
|
var ret;
|
|
if (!this._events || !this._events[type])
|
|
ret = [];
|
|
else if (isFunction(this._events[type]))
|
|
ret = [this._events[type]];
|
|
else
|
|
ret = this._events[type].slice();
|
|
return ret;
|
|
};
|
|
|
|
EventEmitter.listenerCount = function(emitter, type) {
|
|
var ret;
|
|
if (!emitter._events || !emitter._events[type])
|
|
ret = 0;
|
|
else if (isFunction(emitter._events[type]))
|
|
ret = 1;
|
|
else
|
|
ret = emitter._events[type].length;
|
|
return ret;
|
|
};
|
|
|
|
function isFunction(arg) {
|
|
return typeof arg === 'function';
|
|
}
|
|
|
|
function isNumber(arg) {
|
|
return typeof arg === 'number';
|
|
}
|
|
|
|
function isObject(arg) {
|
|
return typeof arg === 'object' && arg !== null;
|
|
}
|
|
|
|
function isUndefined(arg) {
|
|
return arg === void 0;
|
|
}
|
|
|
|
},{}],6:[function(require,module,exports){
|
|
if (typeof Object.create === 'function') {
|
|
// implementation from standard node.js 'util' module
|
|
module.exports = function inherits(ctor, superCtor) {
|
|
ctor.super_ = superCtor
|
|
ctor.prototype = Object.create(superCtor.prototype, {
|
|
constructor: {
|
|
value: ctor,
|
|
enumerable: false,
|
|
writable: true,
|
|
configurable: true
|
|
}
|
|
});
|
|
};
|
|
} else {
|
|
// old school shim for old browsers
|
|
module.exports = function inherits(ctor, superCtor) {
|
|
ctor.super_ = superCtor
|
|
var TempCtor = function () {}
|
|
TempCtor.prototype = superCtor.prototype
|
|
ctor.prototype = new TempCtor()
|
|
ctor.prototype.constructor = ctor
|
|
}
|
|
}
|
|
|
|
},{}],7:[function(require,module,exports){
|
|
// shim for using process in browser
|
|
|
|
var process = module.exports = {};
|
|
var queue = [];
|
|
var draining = false;
|
|
|
|
function drainQueue() {
|
|
if (draining) {
|
|
return;
|
|
}
|
|
draining = true;
|
|
var currentQueue;
|
|
var len = queue.length;
|
|
while(len) {
|
|
currentQueue = queue;
|
|
queue = [];
|
|
var i = -1;
|
|
while (++i < len) {
|
|
currentQueue[i]();
|
|
}
|
|
len = queue.length;
|
|
}
|
|
draining = false;
|
|
}
|
|
process.nextTick = function (fun) {
|
|
queue.push(fun);
|
|
if (!draining) {
|
|
setTimeout(drainQueue, 0);
|
|
}
|
|
};
|
|
|
|
process.title = 'browser';
|
|
process.browser = true;
|
|
process.env = {};
|
|
process.argv = [];
|
|
process.version = ''; // empty string to avoid regexp issues
|
|
process.versions = {};
|
|
|
|
function noop() {}
|
|
|
|
process.on = noop;
|
|
process.addListener = noop;
|
|
process.once = noop;
|
|
process.off = noop;
|
|
process.removeListener = noop;
|
|
process.removeAllListeners = noop;
|
|
process.emit = noop;
|
|
|
|
process.binding = function (name) {
|
|
throw new Error('process.binding is not supported');
|
|
};
|
|
|
|
// TODO(shtylman)
|
|
process.cwd = function () { return '/' };
|
|
process.chdir = function (dir) {
|
|
throw new Error('process.chdir is not supported');
|
|
};
|
|
process.umask = function() { return 0; };
|
|
|
|
},{}],8:[function(require,module,exports){
|
|
module.exports = function isBuffer(arg) {
|
|
return arg && typeof arg === 'object'
|
|
&& typeof arg.copy === 'function'
|
|
&& typeof arg.fill === 'function'
|
|
&& typeof arg.readUInt8 === 'function';
|
|
}
|
|
},{}],9:[function(require,module,exports){
|
|
(function (process,global){
|
|
// Copyright Joyent, Inc. and other Node contributors.
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a
|
|
// copy of this software and associated documentation files (the
|
|
// "Software"), to deal in the Software without restriction, including
|
|
// without limitation the rights to use, copy, modify, merge, publish,
|
|
// distribute, sublicense, and/or sell copies of the Software, and to permit
|
|
// persons to whom the Software is furnished to do so, subject to the
|
|
// following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included
|
|
// in all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
|
|
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
|
|
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
|
|
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
|
|
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
|
|
// USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
|
|
var formatRegExp = /%[sdj%]/g;
|
|
exports.format = function(f) {
|
|
if (!isString(f)) {
|
|
var objects = [];
|
|
for (var i = 0; i < arguments.length; i++) {
|
|
objects.push(inspect(arguments[i]));
|
|
}
|
|
return objects.join(' ');
|
|
}
|
|
|
|
var i = 1;
|
|
var args = arguments;
|
|
var len = args.length;
|
|
var str = String(f).replace(formatRegExp, function(x) {
|
|
if (x === '%%') return '%';
|
|
if (i >= len) return x;
|
|
switch (x) {
|
|
case '%s': return String(args[i++]);
|
|
case '%d': return Number(args[i++]);
|
|
case '%j':
|
|
try {
|
|
return JSON.stringify(args[i++]);
|
|
} catch (_) {
|
|
return '[Circular]';
|
|
}
|
|
default:
|
|
return x;
|
|
}
|
|
});
|
|
for (var x = args[i]; i < len; x = args[++i]) {
|
|
if (isNull(x) || !isObject(x)) {
|
|
str += ' ' + x;
|
|
} else {
|
|
str += ' ' + inspect(x);
|
|
}
|
|
}
|
|
return str;
|
|
};
|
|
|
|
|
|
// Mark that a method should not be used.
|
|
// Returns a modified function which warns once by default.
|
|
// If --no-deprecation is set, then it is a no-op.
|
|
exports.deprecate = function(fn, msg) {
|
|
// Allow for deprecating things in the process of starting up.
|
|
if (isUndefined(global.process)) {
|
|
return function() {
|
|
return exports.deprecate(fn, msg).apply(this, arguments);
|
|
};
|
|
}
|
|
|
|
if (process.noDeprecation === true) {
|
|
return fn;
|
|
}
|
|
|
|
var warned = false;
|
|
function deprecated() {
|
|
if (!warned) {
|
|
if (process.throwDeprecation) {
|
|
throw new Error(msg);
|
|
} else if (process.traceDeprecation) {
|
|
console.trace(msg);
|
|
} else {
|
|
console.error(msg);
|
|
}
|
|
warned = true;
|
|
}
|
|
return fn.apply(this, arguments);
|
|
}
|
|
|
|
return deprecated;
|
|
};
|
|
|
|
|
|
var debugs = {};
|
|
var debugEnviron;
|
|
exports.debuglog = function(set) {
|
|
if (isUndefined(debugEnviron))
|
|
debugEnviron = process.env.NODE_DEBUG || '';
|
|
set = set.toUpperCase();
|
|
if (!debugs[set]) {
|
|
if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
|
|
var pid = process.pid;
|
|
debugs[set] = function() {
|
|
var msg = exports.format.apply(exports, arguments);
|
|
console.error('%s %d: %s', set, pid, msg);
|
|
};
|
|
} else {
|
|
debugs[set] = function() {};
|
|
}
|
|
}
|
|
return debugs[set];
|
|
};
|
|
|
|
|
|
/**
|
|
* Echos the value of a value. Trys to print the value out
|
|
* in the best way possible given the different types.
|
|
*
|
|
* @param {Object} obj The object to print out.
|
|
* @param {Object} opts Optional options object that alters the output.
|
|
*/
|
|
/* legacy: obj, showHidden, depth, colors*/
|
|
function inspect(obj, opts) {
|
|
// default options
|
|
var ctx = {
|
|
seen: [],
|
|
stylize: stylizeNoColor
|
|
};
|
|
// legacy...
|
|
if (arguments.length >= 3) ctx.depth = arguments[2];
|
|
if (arguments.length >= 4) ctx.colors = arguments[3];
|
|
if (isBoolean(opts)) {
|
|
// legacy...
|
|
ctx.showHidden = opts;
|
|
} else if (opts) {
|
|
// got an "options" object
|
|
exports._extend(ctx, opts);
|
|
}
|
|
// set default options
|
|
if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
|
|
if (isUndefined(ctx.depth)) ctx.depth = 2;
|
|
if (isUndefined(ctx.colors)) ctx.colors = false;
|
|
if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
|
|
if (ctx.colors) ctx.stylize = stylizeWithColor;
|
|
return formatValue(ctx, obj, ctx.depth);
|
|
}
|
|
exports.inspect = inspect;
|
|
|
|
|
|
// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
|
|
inspect.colors = {
|
|
'bold' : [1, 22],
|
|
'italic' : [3, 23],
|
|
'underline' : [4, 24],
|
|
'inverse' : [7, 27],
|
|
'white' : [37, 39],
|
|
'grey' : [90, 39],
|
|
'black' : [30, 39],
|
|
'blue' : [34, 39],
|
|
'cyan' : [36, 39],
|
|
'green' : [32, 39],
|
|
'magenta' : [35, 39],
|
|
'red' : [31, 39],
|
|
'yellow' : [33, 39]
|
|
};
|
|
|
|
// Don't use 'blue' not visible on cmd.exe
|
|
inspect.styles = {
|
|
'special': 'cyan',
|
|
'number': 'yellow',
|
|
'boolean': 'yellow',
|
|
'undefined': 'grey',
|
|
'null': 'bold',
|
|
'string': 'green',
|
|
'date': 'magenta',
|
|
// "name": intentionally not styling
|
|
'regexp': 'red'
|
|
};
|
|
|
|
|
|
function stylizeWithColor(str, styleType) {
|
|
var style = inspect.styles[styleType];
|
|
|
|
if (style) {
|
|
return '\u001b[' + inspect.colors[style][0] + 'm' + str +
|
|
'\u001b[' + inspect.colors[style][1] + 'm';
|
|
} else {
|
|
return str;
|
|
}
|
|
}
|
|
|
|
|
|
function stylizeNoColor(str, styleType) {
|
|
return str;
|
|
}
|
|
|
|
|
|
function arrayToHash(array) {
|
|
var hash = {};
|
|
|
|
array.forEach(function(val, idx) {
|
|
hash[val] = true;
|
|
});
|
|
|
|
return hash;
|
|
}
|
|
|
|
|
|
function formatValue(ctx, value, recurseTimes) {
|
|
// Provide a hook for user-specified inspect functions.
|
|
// Check that value is an object with an inspect function on it
|
|
if (ctx.customInspect &&
|
|
value &&
|
|
isFunction(value.inspect) &&
|
|
// Filter out the util module, it's inspect function is special
|
|
value.inspect !== exports.inspect &&
|
|
// Also filter out any prototype objects using the circular check.
|
|
!(value.constructor && value.constructor.prototype === value)) {
|
|
var ret = value.inspect(recurseTimes, ctx);
|
|
if (!isString(ret)) {
|
|
ret = formatValue(ctx, ret, recurseTimes);
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
// Primitive types cannot have properties
|
|
var primitive = formatPrimitive(ctx, value);
|
|
if (primitive) {
|
|
return primitive;
|
|
}
|
|
|
|
// Look up the keys of the object.
|
|
var keys = Object.keys(value);
|
|
var visibleKeys = arrayToHash(keys);
|
|
|
|
if (ctx.showHidden) {
|
|
keys = Object.getOwnPropertyNames(value);
|
|
}
|
|
|
|
// IE doesn't make error fields non-enumerable
|
|
// http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
|
|
if (isError(value)
|
|
&& (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
|
|
return formatError(value);
|
|
}
|
|
|
|
// Some type of object without properties can be shortcutted.
|
|
if (keys.length === 0) {
|
|
if (isFunction(value)) {
|
|
var name = value.name ? ': ' + value.name : '';
|
|
return ctx.stylize('[Function' + name + ']', 'special');
|
|
}
|
|
if (isRegExp(value)) {
|
|
return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
|
|
}
|
|
if (isDate(value)) {
|
|
return ctx.stylize(Date.prototype.toString.call(value), 'date');
|
|
}
|
|
if (isError(value)) {
|
|
return formatError(value);
|
|
}
|
|
}
|
|
|
|
var base = '', array = false, braces = ['{', '}'];
|
|
|
|
// Make Array say that they are Array
|
|
if (isArray(value)) {
|
|
array = true;
|
|
braces = ['[', ']'];
|
|
}
|
|
|
|
// Make functions say that they are functions
|
|
if (isFunction(value)) {
|
|
var n = value.name ? ': ' + value.name : '';
|
|
base = ' [Function' + n + ']';
|
|
}
|
|
|
|
// Make RegExps say that they are RegExps
|
|
if (isRegExp(value)) {
|
|
base = ' ' + RegExp.prototype.toString.call(value);
|
|
}
|
|
|
|
// Make dates with properties first say the date
|
|
if (isDate(value)) {
|
|
base = ' ' + Date.prototype.toUTCString.call(value);
|
|
}
|
|
|
|
// Make error with message first say the error
|
|
if (isError(value)) {
|
|
base = ' ' + formatError(value);
|
|
}
|
|
|
|
if (keys.length === 0 && (!array || value.length == 0)) {
|
|
return braces[0] + base + braces[1];
|
|
}
|
|
|
|
if (recurseTimes < 0) {
|
|
if (isRegExp(value)) {
|
|
return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
|
|
} else {
|
|
return ctx.stylize('[Object]', 'special');
|
|
}
|
|
}
|
|
|
|
ctx.seen.push(value);
|
|
|
|
var output;
|
|
if (array) {
|
|
output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
|
|
} else {
|
|
output = keys.map(function(key) {
|
|
return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
|
|
});
|
|
}
|
|
|
|
ctx.seen.pop();
|
|
|
|
return reduceToSingleString(output, base, braces);
|
|
}
|
|
|
|
|
|
function formatPrimitive(ctx, value) {
|
|
if (isUndefined(value))
|
|
return ctx.stylize('undefined', 'undefined');
|
|
if (isString(value)) {
|
|
var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
|
|
.replace(/'/g, "\\'")
|
|
.replace(/\\"/g, '"') + '\'';
|
|
return ctx.stylize(simple, 'string');
|
|
}
|
|
if (isNumber(value))
|
|
return ctx.stylize('' + value, 'number');
|
|
if (isBoolean(value))
|
|
return ctx.stylize('' + value, 'boolean');
|
|
// For some reason typeof null is "object", so special case here.
|
|
if (isNull(value))
|
|
return ctx.stylize('null', 'null');
|
|
}
|
|
|
|
|
|
function formatError(value) {
|
|
return '[' + Error.prototype.toString.call(value) + ']';
|
|
}
|
|
|
|
|
|
function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
|
|
var output = [];
|
|
for (var i = 0, l = value.length; i < l; ++i) {
|
|
if (hasOwnProperty(value, String(i))) {
|
|
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
|
|
String(i), true));
|
|
} else {
|
|
output.push('');
|
|
}
|
|
}
|
|
keys.forEach(function(key) {
|
|
if (!key.match(/^\d+$/)) {
|
|
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
|
|
key, true));
|
|
}
|
|
});
|
|
return output;
|
|
}
|
|
|
|
|
|
function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
|
|
var name, str, desc;
|
|
desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
|
|
if (desc.get) {
|
|
if (desc.set) {
|
|
str = ctx.stylize('[Getter/Setter]', 'special');
|
|
} else {
|
|
str = ctx.stylize('[Getter]', 'special');
|
|
}
|
|
} else {
|
|
if (desc.set) {
|
|
str = ctx.stylize('[Setter]', 'special');
|
|
}
|
|
}
|
|
if (!hasOwnProperty(visibleKeys, key)) {
|
|
name = '[' + key + ']';
|
|
}
|
|
if (!str) {
|
|
if (ctx.seen.indexOf(desc.value) < 0) {
|
|
if (isNull(recurseTimes)) {
|
|
str = formatValue(ctx, desc.value, null);
|
|
} else {
|
|
str = formatValue(ctx, desc.value, recurseTimes - 1);
|
|
}
|
|
if (str.indexOf('\n') > -1) {
|
|
if (array) {
|
|
str = str.split('\n').map(function(line) {
|
|
return ' ' + line;
|
|
}).join('\n').substr(2);
|
|
} else {
|
|
str = '\n' + str.split('\n').map(function(line) {
|
|
return ' ' + line;
|
|
}).join('\n');
|
|
}
|
|
}
|
|
} else {
|
|
str = ctx.stylize('[Circular]', 'special');
|
|
}
|
|
}
|
|
if (isUndefined(name)) {
|
|
if (array && key.match(/^\d+$/)) {
|
|
return str;
|
|
}
|
|
name = JSON.stringify('' + key);
|
|
if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
|
|
name = name.substr(1, name.length - 2);
|
|
name = ctx.stylize(name, 'name');
|
|
} else {
|
|
name = name.replace(/'/g, "\\'")
|
|
.replace(/\\"/g, '"')
|
|
.replace(/(^"|"$)/g, "'");
|
|
name = ctx.stylize(name, 'string');
|
|
}
|
|
}
|
|
|
|
return name + ': ' + str;
|
|
}
|
|
|
|
|
|
function reduceToSingleString(output, base, braces) {
|
|
var numLinesEst = 0;
|
|
var length = output.reduce(function(prev, cur) {
|
|
numLinesEst++;
|
|
if (cur.indexOf('\n') >= 0) numLinesEst++;
|
|
return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
|
|
}, 0);
|
|
|
|
if (length > 60) {
|
|
return braces[0] +
|
|
(base === '' ? '' : base + '\n ') +
|
|
' ' +
|
|
output.join(',\n ') +
|
|
' ' +
|
|
braces[1];
|
|
}
|
|
|
|
return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
|
|
}
|
|
|
|
|
|
// NOTE: These type checking functions intentionally don't use `instanceof`
|
|
// because it is fragile and can be easily faked with `Object.create()`.
|
|
function isArray(ar) {
|
|
return Array.isArray(ar);
|
|
}
|
|
exports.isArray = isArray;
|
|
|
|
function isBoolean(arg) {
|
|
return typeof arg === 'boolean';
|
|
}
|
|
exports.isBoolean = isBoolean;
|
|
|
|
function isNull(arg) {
|
|
return arg === null;
|
|
}
|
|
exports.isNull = isNull;
|
|
|
|
function isNullOrUndefined(arg) {
|
|
return arg == null;
|
|
}
|
|
exports.isNullOrUndefined = isNullOrUndefined;
|
|
|
|
function isNumber(arg) {
|
|
return typeof arg === 'number';
|
|
}
|
|
exports.isNumber = isNumber;
|
|
|
|
function isString(arg) {
|
|
return typeof arg === 'string';
|
|
}
|
|
exports.isString = isString;
|
|
|
|
function isSymbol(arg) {
|
|
return typeof arg === 'symbol';
|
|
}
|
|
exports.isSymbol = isSymbol;
|
|
|
|
function isUndefined(arg) {
|
|
return arg === void 0;
|
|
}
|
|
exports.isUndefined = isUndefined;
|
|
|
|
function isRegExp(re) {
|
|
return isObject(re) && objectToString(re) === '[object RegExp]';
|
|
}
|
|
exports.isRegExp = isRegExp;
|
|
|
|
function isObject(arg) {
|
|
return typeof arg === 'object' && arg !== null;
|
|
}
|
|
exports.isObject = isObject;
|
|
|
|
function isDate(d) {
|
|
return isObject(d) && objectToString(d) === '[object Date]';
|
|
}
|
|
exports.isDate = isDate;
|
|
|
|
function isError(e) {
|
|
return isObject(e) &&
|
|
(objectToString(e) === '[object Error]' || e instanceof Error);
|
|
}
|
|
exports.isError = isError;
|
|
|
|
function isFunction(arg) {
|
|
return typeof arg === 'function';
|
|
}
|
|
exports.isFunction = isFunction;
|
|
|
|
function isPrimitive(arg) {
|
|
return arg === null ||
|
|
typeof arg === 'boolean' ||
|
|
typeof arg === 'number' ||
|
|
typeof arg === 'string' ||
|
|
typeof arg === 'symbol' || // ES6 symbol
|
|
typeof arg === 'undefined';
|
|
}
|
|
exports.isPrimitive = isPrimitive;
|
|
|
|
exports.isBuffer = require('./support/isBuffer');
|
|
|
|
function objectToString(o) {
|
|
return Object.prototype.toString.call(o);
|
|
}
|
|
|
|
|
|
function pad(n) {
|
|
return n < 10 ? '0' + n.toString(10) : n.toString(10);
|
|
}
|
|
|
|
|
|
var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
|
|
'Oct', 'Nov', 'Dec'];
|
|
|
|
// 26 Feb 16:19:34
|
|
function timestamp() {
|
|
var d = new Date();
|
|
var time = [pad(d.getHours()),
|
|
pad(d.getMinutes()),
|
|
pad(d.getSeconds())].join(':');
|
|
return [d.getDate(), months[d.getMonth()], time].join(' ');
|
|
}
|
|
|
|
|
|
// log is just a thin wrapper to console.log that prepends a timestamp
|
|
exports.log = function() {
|
|
console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
|
|
};
|
|
|
|
|
|
/**
|
|
* Inherit the prototype methods from one constructor into another.
|
|
*
|
|
* The Function.prototype.inherits from lang.js rewritten as a standalone
|
|
* function (not on Function.prototype). NOTE: If this file is to be loaded
|
|
* during bootstrapping this function needs to be rewritten using some native
|
|
* functions as prototype setup using normal JavaScript does not work as
|
|
* expected during bootstrapping (see mirror.js in r114903).
|
|
*
|
|
* @param {function} ctor Constructor function which needs to inherit the
|
|
* prototype.
|
|
* @param {function} superCtor Constructor function to inherit prototype from.
|
|
*/
|
|
exports.inherits = require('inherits');
|
|
|
|
exports._extend = function(origin, add) {
|
|
// Don't do anything if add isn't an object
|
|
if (!add || !isObject(add)) return origin;
|
|
|
|
var keys = Object.keys(add);
|
|
var i = keys.length;
|
|
while (i--) {
|
|
origin[keys[i]] = add[keys[i]];
|
|
}
|
|
return origin;
|
|
};
|
|
|
|
function hasOwnProperty(obj, prop) {
|
|
return Object.prototype.hasOwnProperty.call(obj, prop);
|
|
}
|
|
|
|
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
|
},{"./support/isBuffer":8,"_process":7,"inherits":6}],10:[function(require,module,exports){
|
|
(function (global){
|
|
/*global window, global*/
|
|
var util = require("util")
|
|
var assert = require("assert")
|
|
var now = require("date-now")
|
|
|
|
var slice = Array.prototype.slice
|
|
var console
|
|
var times = {}
|
|
|
|
if (typeof global !== "undefined" && global.console) {
|
|
console = global.console
|
|
} else if (typeof window !== "undefined" && window.console) {
|
|
console = window.console
|
|
} else {
|
|
console = {}
|
|
}
|
|
|
|
var functions = [
|
|
[log, "log"],
|
|
[info, "info"],
|
|
[warn, "warn"],
|
|
[error, "error"],
|
|
[time, "time"],
|
|
[timeEnd, "timeEnd"],
|
|
[trace, "trace"],
|
|
[dir, "dir"],
|
|
[consoleAssert, "assert"]
|
|
]
|
|
|
|
for (var i = 0; i < functions.length; i++) {
|
|
var tuple = functions[i]
|
|
var f = tuple[0]
|
|
var name = tuple[1]
|
|
|
|
if (!console[name]) {
|
|
console[name] = f
|
|
}
|
|
}
|
|
|
|
module.exports = console
|
|
|
|
function log() {}
|
|
|
|
function info() {
|
|
console.log.apply(console, arguments)
|
|
}
|
|
|
|
function warn() {
|
|
console.log.apply(console, arguments)
|
|
}
|
|
|
|
function error() {
|
|
console.warn.apply(console, arguments)
|
|
}
|
|
|
|
function time(label) {
|
|
times[label] = now()
|
|
}
|
|
|
|
function timeEnd(label) {
|
|
var time = times[label]
|
|
if (!time) {
|
|
throw new Error("No such label: " + label)
|
|
}
|
|
|
|
var duration = now() - time
|
|
console.log(label + ": " + duration + "ms")
|
|
}
|
|
|
|
function trace() {
|
|
var err = new Error()
|
|
err.name = "Trace"
|
|
err.message = util.format.apply(null, arguments)
|
|
console.error(err.stack)
|
|
}
|
|
|
|
function dir(object) {
|
|
console.log(util.inspect(object) + "\n")
|
|
}
|
|
|
|
function consoleAssert(expression) {
|
|
if (!expression) {
|
|
var arr = slice.call(arguments, 1)
|
|
assert.ok(false, util.format.apply(null, arr))
|
|
}
|
|
}
|
|
|
|
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
|
},{"assert":4,"date-now":11,"util":9}],11:[function(require,module,exports){
|
|
module.exports = now
|
|
|
|
function now() {
|
|
return new Date().getTime()
|
|
}
|
|
|
|
},{}],12:[function(require,module,exports){
|
|
(function (global){
|
|
/**
|
|
* @license
|
|
* lodash 3.6.0 (Custom Build) <https://lodash.com/>
|
|
* Build: `lodash modern -d -o ./index.js`
|
|
* Copyright 2012-2015 The Dojo Foundation <http://dojofoundation.org/>
|
|
* Based on Underscore.js 1.8.2 <http://underscorejs.org/LICENSE>
|
|
* Copyright 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
|
|
* Available under MIT license <https://lodash.com/license>
|
|
*/
|
|
;(function() {
|
|
|
|
/** Used as a safe reference for `undefined` in pre-ES5 environments. */
|
|
var undefined;
|
|
|
|
/** Used as the semantic version number. */
|
|
var VERSION = '3.6.0';
|
|
|
|
/** Used to compose bitmasks for wrapper metadata. */
|
|
var BIND_FLAG = 1,
|
|
BIND_KEY_FLAG = 2,
|
|
CURRY_BOUND_FLAG = 4,
|
|
CURRY_FLAG = 8,
|
|
CURRY_RIGHT_FLAG = 16,
|
|
PARTIAL_FLAG = 32,
|
|
PARTIAL_RIGHT_FLAG = 64,
|
|
ARY_FLAG = 128,
|
|
REARG_FLAG = 256;
|
|
|
|
/** Used as default options for `_.trunc`. */
|
|
var DEFAULT_TRUNC_LENGTH = 30,
|
|
DEFAULT_TRUNC_OMISSION = '...';
|
|
|
|
/** Used to detect when a function becomes hot. */
|
|
var HOT_COUNT = 150,
|
|
HOT_SPAN = 16;
|
|
|
|
/** Used to indicate the type of lazy iteratees. */
|
|
var LAZY_DROP_WHILE_FLAG = 0,
|
|
LAZY_FILTER_FLAG = 1,
|
|
LAZY_MAP_FLAG = 2;
|
|
|
|
/** Used as the `TypeError` message for "Functions" methods. */
|
|
var FUNC_ERROR_TEXT = 'Expected a function';
|
|
|
|
/** Used as the internal argument placeholder. */
|
|
var PLACEHOLDER = '__lodash_placeholder__';
|
|
|
|
/** `Object#toString` result references. */
|
|
var argsTag = '[object Arguments]',
|
|
arrayTag = '[object Array]',
|
|
boolTag = '[object Boolean]',
|
|
dateTag = '[object Date]',
|
|
errorTag = '[object Error]',
|
|
funcTag = '[object Function]',
|
|
mapTag = '[object Map]',
|
|
numberTag = '[object Number]',
|
|
objectTag = '[object Object]',
|
|
regexpTag = '[object RegExp]',
|
|
setTag = '[object Set]',
|
|
stringTag = '[object String]',
|
|
weakMapTag = '[object WeakMap]';
|
|
|
|
var arrayBufferTag = '[object ArrayBuffer]',
|
|
float32Tag = '[object Float32Array]',
|
|
float64Tag = '[object Float64Array]',
|
|
int8Tag = '[object Int8Array]',
|
|
int16Tag = '[object Int16Array]',
|
|
int32Tag = '[object Int32Array]',
|
|
uint8Tag = '[object Uint8Array]',
|
|
uint8ClampedTag = '[object Uint8ClampedArray]',
|
|
uint16Tag = '[object Uint16Array]',
|
|
uint32Tag = '[object Uint32Array]';
|
|
|
|
/** Used to match empty string literals in compiled template source. */
|
|
var reEmptyStringLeading = /\b__p \+= '';/g,
|
|
reEmptyStringMiddle = /\b(__p \+=) '' \+/g,
|
|
reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g;
|
|
|
|
/** Used to match HTML entities and HTML characters. */
|
|
var reEscapedHtml = /&(?:amp|lt|gt|quot|#39|#96);/g,
|
|
reUnescapedHtml = /[&<>"'`]/g,
|
|
reHasEscapedHtml = RegExp(reEscapedHtml.source),
|
|
reHasUnescapedHtml = RegExp(reUnescapedHtml.source);
|
|
|
|
/** Used to match template delimiters. */
|
|
var reEscape = /<%-([\s\S]+?)%>/g,
|
|
reEvaluate = /<%([\s\S]+?)%>/g,
|
|
reInterpolate = /<%=([\s\S]+?)%>/g;
|
|
|
|
/**
|
|
* Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).
|
|
*/
|
|
var reComboMarks = /[\u0300-\u036f\ufe20-\ufe23]/g;
|
|
|
|
/**
|
|
* Used to match [ES template delimiters](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-template-literal-lexical-components).
|
|
*/
|
|
var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g;
|
|
|
|
/** Used to match `RegExp` flags from their coerced string values. */
|
|
var reFlags = /\w*$/;
|
|
|
|
/** Used to detect hexadecimal string values. */
|
|
var reHexPrefix = /^0[xX]/;
|
|
|
|
/** Used to detect host constructors (Safari > 5). */
|
|
var reHostCtor = /^\[object .+?Constructor\]$/;
|
|
|
|
/** Used to match latin-1 supplementary letters (excluding mathematical operators). */
|
|
var reLatin1 = /[\xc0-\xd6\xd8-\xde\xdf-\xf6\xf8-\xff]/g;
|
|
|
|
/** Used to ensure capturing order of template delimiters. */
|
|
var reNoMatch = /($^)/;
|
|
|
|
/**
|
|
* Used to match `RegExp` [special characters](http://www.regular-expressions.info/characters.html#special).
|
|
* In addition to special characters the forward slash is escaped to allow for
|
|
* easier `eval` use and `Function` compilation.
|
|
*/
|
|
var reRegExpChars = /[.*+?^${}()|[\]\/\\]/g,
|
|
reHasRegExpChars = RegExp(reRegExpChars.source);
|
|
|
|
/** Used to match unescaped characters in compiled string literals. */
|
|
var reUnescapedString = /['\n\r\u2028\u2029\\]/g;
|
|
|
|
/** Used to match words to create compound words. */
|
|
var reWords = (function() {
|
|
var upper = '[A-Z\\xc0-\\xd6\\xd8-\\xde]',
|
|
lower = '[a-z\\xdf-\\xf6\\xf8-\\xff]+';
|
|
|
|
return RegExp(upper + '+(?=' + upper + lower + ')|' + upper + '?' + lower + '|' + upper + '+|[0-9]+', 'g');
|
|
}());
|
|
|
|
/** Used to detect and test for whitespace. */
|
|
var whitespace = (
|
|
// Basic whitespace characters.
|
|
' \t\x0b\f\xa0\ufeff' +
|
|
|
|
// Line terminators.
|
|
'\n\r\u2028\u2029' +
|
|
|
|
// Unicode category "Zs" space separators.
|
|
'\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000'
|
|
);
|
|
|
|
/** Used to assign default `context` object properties. */
|
|
var contextProps = [
|
|
'Array', 'ArrayBuffer', 'Date', 'Error', 'Float32Array', 'Float64Array',
|
|
'Function', 'Int8Array', 'Int16Array', 'Int32Array', 'Math', 'Number',
|
|
'Object', 'RegExp', 'Set', 'String', '_', 'clearTimeout', 'document',
|
|
'isFinite', 'parseInt', 'setTimeout', 'TypeError', 'Uint8Array',
|
|
'Uint8ClampedArray', 'Uint16Array', 'Uint32Array', 'WeakMap',
|
|
'window'
|
|
];
|
|
|
|
/** Used to make template sourceURLs easier to identify. */
|
|
var templateCounter = -1;
|
|
|
|
/** Used to identify `toStringTag` values of typed arrays. */
|
|
var typedArrayTags = {};
|
|
typedArrayTags[float32Tag] = typedArrayTags[float64Tag] =
|
|
typedArrayTags[int8Tag] = typedArrayTags[int16Tag] =
|
|
typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] =
|
|
typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] =
|
|
typedArrayTags[uint32Tag] = true;
|
|
typedArrayTags[argsTag] = typedArrayTags[arrayTag] =
|
|
typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =
|
|
typedArrayTags[dateTag] = typedArrayTags[errorTag] =
|
|
typedArrayTags[funcTag] = typedArrayTags[mapTag] =
|
|
typedArrayTags[numberTag] = typedArrayTags[objectTag] =
|
|
typedArrayTags[regexpTag] = typedArrayTags[setTag] =
|
|
typedArrayTags[stringTag] = typedArrayTags[weakMapTag] = false;
|
|
|
|
/** Used to identify `toStringTag` values supported by `_.clone`. */
|
|
var cloneableTags = {};
|
|
cloneableTags[argsTag] = cloneableTags[arrayTag] =
|
|
cloneableTags[arrayBufferTag] = cloneableTags[boolTag] =
|
|
cloneableTags[dateTag] = cloneableTags[float32Tag] =
|
|
cloneableTags[float64Tag] = cloneableTags[int8Tag] =
|
|
cloneableTags[int16Tag] = cloneableTags[int32Tag] =
|
|
cloneableTags[numberTag] = cloneableTags[objectTag] =
|
|
cloneableTags[regexpTag] = cloneableTags[stringTag] =
|
|
cloneableTags[uint8Tag] = cloneableTags[uint8ClampedTag] =
|
|
cloneableTags[uint16Tag] = cloneableTags[uint32Tag] = true;
|
|
cloneableTags[errorTag] = cloneableTags[funcTag] =
|
|
cloneableTags[mapTag] = cloneableTags[setTag] =
|
|
cloneableTags[weakMapTag] = false;
|
|
|
|
/** Used as an internal `_.debounce` options object by `_.throttle`. */
|
|
var debounceOptions = {
|
|
'leading': false,
|
|
'maxWait': 0,
|
|
'trailing': false
|
|
};
|
|
|
|
/** Used to map latin-1 supplementary letters to basic latin letters. */
|
|
var deburredLetters = {
|
|
'\xc0': 'A', '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A',
|
|
'\xe0': 'a', '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a',
|
|
'\xc7': 'C', '\xe7': 'c',
|
|
'\xd0': 'D', '\xf0': 'd',
|
|
'\xc8': 'E', '\xc9': 'E', '\xca': 'E', '\xcb': 'E',
|
|
'\xe8': 'e', '\xe9': 'e', '\xea': 'e', '\xeb': 'e',
|
|
'\xcC': 'I', '\xcd': 'I', '\xce': 'I', '\xcf': 'I',
|
|
'\xeC': 'i', '\xed': 'i', '\xee': 'i', '\xef': 'i',
|
|
'\xd1': 'N', '\xf1': 'n',
|
|
'\xd2': 'O', '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O',
|
|
'\xf2': 'o', '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o',
|
|
'\xd9': 'U', '\xda': 'U', '\xdb': 'U', '\xdc': 'U',
|
|
'\xf9': 'u', '\xfa': 'u', '\xfb': 'u', '\xfc': 'u',
|
|
'\xdd': 'Y', '\xfd': 'y', '\xff': 'y',
|
|
'\xc6': 'Ae', '\xe6': 'ae',
|
|
'\xde': 'Th', '\xfe': 'th',
|
|
'\xdf': 'ss'
|
|
};
|
|
|
|
/** Used to map characters to HTML entities. */
|
|
var htmlEscapes = {
|
|
'&': '&',
|
|
'<': '<',
|
|
'>': '>',
|
|
'"': '"',
|
|
"'": ''',
|
|
'`': '`'
|
|
};
|
|
|
|
/** Used to map HTML entities to characters. */
|
|
var htmlUnescapes = {
|
|
'&': '&',
|
|
'<': '<',
|
|
'>': '>',
|
|
'"': '"',
|
|
''': "'",
|
|
'`': '`'
|
|
};
|
|
|
|
/** Used to determine if values are of the language type `Object`. */
|
|
var objectTypes = {
|
|
'function': true,
|
|
'object': true
|
|
};
|
|
|
|
/** Used to escape characters for inclusion in compiled string literals. */
|
|
var stringEscapes = {
|
|
'\\': '\\',
|
|
"'": "'",
|
|
'\n': 'n',
|
|
'\r': 'r',
|
|
'\u2028': 'u2028',
|
|
'\u2029': 'u2029'
|
|
};
|
|
|
|
/** Detect free variable `exports`. */
|
|
var freeExports = objectTypes[typeof exports] && exports && !exports.nodeType && exports;
|
|
|
|
/** Detect free variable `module`. */
|
|
var freeModule = objectTypes[typeof module] && module && !module.nodeType && module;
|
|
|
|
/** Detect free variable `global` from Node.js. */
|
|
var freeGlobal = freeExports && freeModule && typeof global == 'object' && global;
|
|
|
|
/** Detect free variable `self`. */
|
|
var freeSelf = objectTypes[typeof self] && self && self.Object && self;
|
|
|
|
/** Detect free variable `window`. */
|
|
var freeWindow = objectTypes[typeof window] && window && window.Object && window;
|
|
|
|
/** Detect the popular CommonJS extension `module.exports`. */
|
|
var moduleExports = freeModule && freeModule.exports === freeExports && freeExports;
|
|
|
|
/**
|
|
* Used as a reference to the global object.
|
|
*
|
|
* The `this` value is used if it is the global object to avoid Greasemonkey's
|
|
* restricted `window` object, otherwise the `window` object is used.
|
|
*/
|
|
var root = freeGlobal || ((freeWindow !== (this && this.window)) && freeWindow) || freeSelf || this;
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
* The base implementation of `compareAscending` which compares values and
|
|
* sorts them in ascending order without guaranteeing a stable sort.
|
|
*
|
|
* @private
|
|
* @param {*} value The value to compare to `other`.
|
|
* @param {*} other The value to compare to `value`.
|
|
* @returns {number} Returns the sort order indicator for `value`.
|
|
*/
|
|
function baseCompareAscending(value, other) {
|
|
if (value !== other) {
|
|
var valIsReflexive = value === value,
|
|
othIsReflexive = other === other;
|
|
|
|
if (value > other || !valIsReflexive || (typeof value == 'undefined' && othIsReflexive)) {
|
|
return 1;
|
|
}
|
|
if (value < other || !othIsReflexive || (typeof other == 'undefined' && valIsReflexive)) {
|
|
return -1;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.findIndex` and `_.findLastIndex` without
|
|
* support for callback shorthands and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to search.
|
|
* @param {Function} predicate The function invoked per iteration.
|
|
* @param {boolean} [fromRight] Specify iterating from right to left.
|
|
* @returns {number} Returns the index of the matched value, else `-1`.
|
|
*/
|
|
function baseFindIndex(array, predicate, fromRight) {
|
|
var length = array.length,
|
|
index = fromRight ? length : -1;
|
|
|
|
while ((fromRight ? index-- : ++index < length)) {
|
|
if (predicate(array[index], index, array)) {
|
|
return index;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.indexOf` without support for binary searches.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to search.
|
|
* @param {*} value The value to search for.
|
|
* @param {number} fromIndex The index to search from.
|
|
* @returns {number} Returns the index of the matched value, else `-1`.
|
|
*/
|
|
function baseIndexOf(array, value, fromIndex) {
|
|
if (value !== value) {
|
|
return indexOfNaN(array, fromIndex);
|
|
}
|
|
var index = fromIndex - 1,
|
|
length = array.length;
|
|
|
|
while (++index < length) {
|
|
if (array[index] === value) {
|
|
return index;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.isFunction` without support for environments
|
|
* with incorrect `typeof` results.
|
|
*
|
|
* @private
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
|
|
*/
|
|
function baseIsFunction(value) {
|
|
// Avoid a Chakra JIT bug in compatibility modes of IE 11.
|
|
// See https://github.com/jashkenas/underscore/issues/1621 for more details.
|
|
return typeof value == 'function' || false;
|
|
}
|
|
|
|
/**
|
|
* Converts `value` to a string if it is not one. An empty string is returned
|
|
* for `null` or `undefined` values.
|
|
*
|
|
* @private
|
|
* @param {*} value The value to process.
|
|
* @returns {string} Returns the string.
|
|
*/
|
|
function baseToString(value) {
|
|
if (typeof value == 'string') {
|
|
return value;
|
|
}
|
|
return value == null ? '' : (value + '');
|
|
}
|
|
|
|
/**
|
|
* Used by `_.max` and `_.min` as the default callback for string values.
|
|
*
|
|
* @private
|
|
* @param {string} string The string to inspect.
|
|
* @returns {number} Returns the code unit of the first character of the string.
|
|
*/
|
|
function charAtCallback(string) {
|
|
return string.charCodeAt(0);
|
|
}
|
|
|
|
/**
|
|
* Used by `_.trim` and `_.trimLeft` to get the index of the first character
|
|
* of `string` that is not found in `chars`.
|
|
*
|
|
* @private
|
|
* @param {string} string The string to inspect.
|
|
* @param {string} chars The characters to find.
|
|
* @returns {number} Returns the index of the first character not found in `chars`.
|
|
*/
|
|
function charsLeftIndex(string, chars) {
|
|
var index = -1,
|
|
length = string.length;
|
|
|
|
while (++index < length && chars.indexOf(string.charAt(index)) > -1) {}
|
|
return index;
|
|
}
|
|
|
|
/**
|
|
* Used by `_.trim` and `_.trimRight` to get the index of the last character
|
|
* of `string` that is not found in `chars`.
|
|
*
|
|
* @private
|
|
* @param {string} string The string to inspect.
|
|
* @param {string} chars The characters to find.
|
|
* @returns {number} Returns the index of the last character not found in `chars`.
|
|
*/
|
|
function charsRightIndex(string, chars) {
|
|
var index = string.length;
|
|
|
|
while (index-- && chars.indexOf(string.charAt(index)) > -1) {}
|
|
return index;
|
|
}
|
|
|
|
/**
|
|
* Used by `_.sortBy` to compare transformed elements of a collection and stable
|
|
* sort them in ascending order.
|
|
*
|
|
* @private
|
|
* @param {Object} object The object to compare to `other`.
|
|
* @param {Object} other The object to compare to `object`.
|
|
* @returns {number} Returns the sort order indicator for `object`.
|
|
*/
|
|
function compareAscending(object, other) {
|
|
return baseCompareAscending(object.criteria, other.criteria) || (object.index - other.index);
|
|
}
|
|
|
|
/**
|
|
* Used by `_.sortByOrder` to compare multiple properties of each element
|
|
* in a collection and stable sort them in the following order:
|
|
*
|
|
* If orders is unspecified, sort in ascending order for all properties.
|
|
* Otherwise, for each property, sort in ascending order if its corresponding value in
|
|
* orders is true, and descending order if false.
|
|
*
|
|
* @private
|
|
* @param {Object} object The object to compare to `other`.
|
|
* @param {Object} other The object to compare to `object`.
|
|
* @param {boolean[]} orders The order to sort by for each property.
|
|
* @returns {number} Returns the sort order indicator for `object`.
|
|
*/
|
|
function compareMultiple(object, other, orders) {
|
|
var index = -1,
|
|
objCriteria = object.criteria,
|
|
othCriteria = other.criteria,
|
|
length = objCriteria.length,
|
|
ordersLength = orders.length;
|
|
|
|
while (++index < length) {
|
|
var result = baseCompareAscending(objCriteria[index], othCriteria[index]);
|
|
if (result) {
|
|
if (index >= ordersLength) {
|
|
return result;
|
|
}
|
|
return result * (orders[index] ? 1 : -1);
|
|
}
|
|
}
|
|
// Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications
|
|
// that causes it, under certain circumstances, to provide the same value for
|
|
// `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247
|
|
// for more details.
|
|
//
|
|
// This also ensures a stable sort in V8 and other engines.
|
|
// See https://code.google.com/p/v8/issues/detail?id=90 for more details.
|
|
return object.index - other.index;
|
|
}
|
|
|
|
/**
|
|
* Used by `_.deburr` to convert latin-1 supplementary letters to basic latin letters.
|
|
*
|
|
* @private
|
|
* @param {string} letter The matched letter to deburr.
|
|
* @returns {string} Returns the deburred letter.
|
|
*/
|
|
function deburrLetter(letter) {
|
|
return deburredLetters[letter];
|
|
}
|
|
|
|
/**
|
|
* Used by `_.escape` to convert characters to HTML entities.
|
|
*
|
|
* @private
|
|
* @param {string} chr The matched character to escape.
|
|
* @returns {string} Returns the escaped character.
|
|
*/
|
|
function escapeHtmlChar(chr) {
|
|
return htmlEscapes[chr];
|
|
}
|
|
|
|
/**
|
|
* Used by `_.template` to escape characters for inclusion in compiled
|
|
* string literals.
|
|
*
|
|
* @private
|
|
* @param {string} chr The matched character to escape.
|
|
* @returns {string} Returns the escaped character.
|
|
*/
|
|
function escapeStringChar(chr) {
|
|
return '\\' + stringEscapes[chr];
|
|
}
|
|
|
|
/**
|
|
* Gets the index at which the first occurrence of `NaN` is found in `array`.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to search.
|
|
* @param {number} fromIndex The index to search from.
|
|
* @param {boolean} [fromRight] Specify iterating from right to left.
|
|
* @returns {number} Returns the index of the matched `NaN`, else `-1`.
|
|
*/
|
|
function indexOfNaN(array, fromIndex, fromRight) {
|
|
var length = array.length,
|
|
index = fromIndex + (fromRight ? 0 : -1);
|
|
|
|
while ((fromRight ? index-- : ++index < length)) {
|
|
var other = array[index];
|
|
if (other !== other) {
|
|
return index;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Checks if `value` is object-like.
|
|
*
|
|
* @private
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is object-like, else `false`.
|
|
*/
|
|
function isObjectLike(value) {
|
|
return !!value && typeof value == 'object';
|
|
}
|
|
|
|
/**
|
|
* Used by `trimmedLeftIndex` and `trimmedRightIndex` to determine if a
|
|
* character code is whitespace.
|
|
*
|
|
* @private
|
|
* @param {number} charCode The character code to inspect.
|
|
* @returns {boolean} Returns `true` if `charCode` is whitespace, else `false`.
|
|
*/
|
|
function isSpace(charCode) {
|
|
return ((charCode <= 160 && (charCode >= 9 && charCode <= 13) || charCode == 32 || charCode == 160) || charCode == 5760 || charCode == 6158 ||
|
|
(charCode >= 8192 && (charCode <= 8202 || charCode == 8232 || charCode == 8233 || charCode == 8239 || charCode == 8287 || charCode == 12288 || charCode == 65279)));
|
|
}
|
|
|
|
/**
|
|
* Replaces all `placeholder` elements in `array` with an internal placeholder
|
|
* and returns an array of their indexes.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to modify.
|
|
* @param {*} placeholder The placeholder to replace.
|
|
* @returns {Array} Returns the new array of placeholder indexes.
|
|
*/
|
|
function replaceHolders(array, placeholder) {
|
|
var index = -1,
|
|
length = array.length,
|
|
resIndex = -1,
|
|
result = [];
|
|
|
|
while (++index < length) {
|
|
if (array[index] === placeholder) {
|
|
array[index] = PLACEHOLDER;
|
|
result[++resIndex] = index;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* An implementation of `_.uniq` optimized for sorted arrays without support
|
|
* for callback shorthands and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to inspect.
|
|
* @param {Function} [iteratee] The function invoked per iteration.
|
|
* @returns {Array} Returns the new duplicate-value-free array.
|
|
*/
|
|
function sortedUniq(array, iteratee) {
|
|
var seen,
|
|
index = -1,
|
|
length = array.length,
|
|
resIndex = -1,
|
|
result = [];
|
|
|
|
while (++index < length) {
|
|
var value = array[index],
|
|
computed = iteratee ? iteratee(value, index, array) : value;
|
|
|
|
if (!index || seen !== computed) {
|
|
seen = computed;
|
|
result[++resIndex] = value;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Used by `_.trim` and `_.trimLeft` to get the index of the first non-whitespace
|
|
* character of `string`.
|
|
*
|
|
* @private
|
|
* @param {string} string The string to inspect.
|
|
* @returns {number} Returns the index of the first non-whitespace character.
|
|
*/
|
|
function trimmedLeftIndex(string) {
|
|
var index = -1,
|
|
length = string.length;
|
|
|
|
while (++index < length && isSpace(string.charCodeAt(index))) {}
|
|
return index;
|
|
}
|
|
|
|
/**
|
|
* Used by `_.trim` and `_.trimRight` to get the index of the last non-whitespace
|
|
* character of `string`.
|
|
*
|
|
* @private
|
|
* @param {string} string The string to inspect.
|
|
* @returns {number} Returns the index of the last non-whitespace character.
|
|
*/
|
|
function trimmedRightIndex(string) {
|
|
var index = string.length;
|
|
|
|
while (index-- && isSpace(string.charCodeAt(index))) {}
|
|
return index;
|
|
}
|
|
|
|
/**
|
|
* Used by `_.unescape` to convert HTML entities to characters.
|
|
*
|
|
* @private
|
|
* @param {string} chr The matched character to unescape.
|
|
* @returns {string} Returns the unescaped character.
|
|
*/
|
|
function unescapeHtmlChar(chr) {
|
|
return htmlUnescapes[chr];
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
* Create a new pristine `lodash` function using the given `context` object.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Utility
|
|
* @param {Object} [context=root] The context object.
|
|
* @returns {Function} Returns a new `lodash` function.
|
|
* @example
|
|
*
|
|
* _.mixin({ 'foo': _.constant('foo') });
|
|
*
|
|
* var lodash = _.runInContext();
|
|
* lodash.mixin({ 'bar': lodash.constant('bar') });
|
|
*
|
|
* _.isFunction(_.foo);
|
|
* // => true
|
|
* _.isFunction(_.bar);
|
|
* // => false
|
|
*
|
|
* lodash.isFunction(lodash.foo);
|
|
* // => false
|
|
* lodash.isFunction(lodash.bar);
|
|
* // => true
|
|
*
|
|
* // using `context` to mock `Date#getTime` use in `_.now`
|
|
* var mock = _.runInContext({
|
|
* 'Date': function() {
|
|
* return { 'getTime': getTimeMock };
|
|
* }
|
|
* });
|
|
*
|
|
* // or creating a suped-up `defer` in Node.js
|
|
* var defer = _.runInContext({ 'setTimeout': setImmediate }).defer;
|
|
*/
|
|
function runInContext(context) {
|
|
// Avoid issues with some ES3 environments that attempt to use values, named
|
|
// after built-in constructors like `Object`, for the creation of literals.
|
|
// ES5 clears this up by stating that literals must use built-in constructors.
|
|
// See https://es5.github.io/#x11.1.5 for more details.
|
|
context = context ? _.defaults(root.Object(), context, _.pick(root, contextProps)) : root;
|
|
|
|
/** Native constructor references. */
|
|
var Array = context.Array,
|
|
Date = context.Date,
|
|
Error = context.Error,
|
|
Function = context.Function,
|
|
Math = context.Math,
|
|
Number = context.Number,
|
|
Object = context.Object,
|
|
RegExp = context.RegExp,
|
|
String = context.String,
|
|
TypeError = context.TypeError;
|
|
|
|
/** Used for native method references. */
|
|
var arrayProto = Array.prototype,
|
|
objectProto = Object.prototype,
|
|
stringProto = String.prototype;
|
|
|
|
/** Used to detect DOM support. */
|
|
var document = (document = context.window) && document.document;
|
|
|
|
/** Used to resolve the decompiled source of functions. */
|
|
var fnToString = Function.prototype.toString;
|
|
|
|
/** Used to the length of n-tuples for `_.unzip`. */
|
|
var getLength = baseProperty('length');
|
|
|
|
/** Used to check objects for own properties. */
|
|
var hasOwnProperty = objectProto.hasOwnProperty;
|
|
|
|
/** Used to generate unique IDs. */
|
|
var idCounter = 0;
|
|
|
|
/**
|
|
* Used to resolve the [`toStringTag`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring)
|
|
* of values.
|
|
*/
|
|
var objToString = objectProto.toString;
|
|
|
|
/** Used to restore the original `_` reference in `_.noConflict`. */
|
|
var oldDash = context._;
|
|
|
|
/** Used to detect if a method is native. */
|
|
var reNative = RegExp('^' +
|
|
escapeRegExp(objToString)
|
|
.replace(/toString|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
|
|
);
|
|
|
|
/** Native method references. */
|
|
var ArrayBuffer = isNative(ArrayBuffer = context.ArrayBuffer) && ArrayBuffer,
|
|
bufferSlice = isNative(bufferSlice = ArrayBuffer && new ArrayBuffer(0).slice) && bufferSlice,
|
|
ceil = Math.ceil,
|
|
clearTimeout = context.clearTimeout,
|
|
floor = Math.floor,
|
|
getPrototypeOf = isNative(getPrototypeOf = Object.getPrototypeOf) && getPrototypeOf,
|
|
push = arrayProto.push,
|
|
propertyIsEnumerable = objectProto.propertyIsEnumerable,
|
|
Set = isNative(Set = context.Set) && Set,
|
|
setTimeout = context.setTimeout,
|
|
splice = arrayProto.splice,
|
|
Uint8Array = isNative(Uint8Array = context.Uint8Array) && Uint8Array,
|
|
WeakMap = isNative(WeakMap = context.WeakMap) && WeakMap;
|
|
|
|
/** Used to clone array buffers. */
|
|
var Float64Array = (function() {
|
|
// Safari 5 errors when using an array buffer to initialize a typed array
|
|
// where the array buffer's `byteLength` is not a multiple of the typed
|
|
// array's `BYTES_PER_ELEMENT`.
|
|
try {
|
|
var func = isNative(func = context.Float64Array) && func,
|
|
result = new func(new ArrayBuffer(10), 0, 1) && func;
|
|
} catch(e) {}
|
|
return result;
|
|
}());
|
|
|
|
/* Native method references for those with the same name as other `lodash` methods. */
|
|
var nativeIsArray = isNative(nativeIsArray = Array.isArray) && nativeIsArray,
|
|
nativeCreate = isNative(nativeCreate = Object.create) && nativeCreate,
|
|
nativeIsFinite = context.isFinite,
|
|
nativeKeys = isNative(nativeKeys = Object.keys) && nativeKeys,
|
|
nativeMax = Math.max,
|
|
nativeMin = Math.min,
|
|
nativeNow = isNative(nativeNow = Date.now) && nativeNow,
|
|
nativeNumIsFinite = isNative(nativeNumIsFinite = Number.isFinite) && nativeNumIsFinite,
|
|
nativeParseInt = context.parseInt,
|
|
nativeRandom = Math.random;
|
|
|
|
/** Used as references for `-Infinity` and `Infinity`. */
|
|
var NEGATIVE_INFINITY = Number.NEGATIVE_INFINITY,
|
|
POSITIVE_INFINITY = Number.POSITIVE_INFINITY;
|
|
|
|
/** Used as references for the maximum length and index of an array. */
|
|
var MAX_ARRAY_LENGTH = Math.pow(2, 32) - 1,
|
|
MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH - 1,
|
|
HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH >>> 1;
|
|
|
|
/** Used as the size, in bytes, of each `Float64Array` element. */
|
|
var FLOAT64_BYTES_PER_ELEMENT = Float64Array ? Float64Array.BYTES_PER_ELEMENT : 0;
|
|
|
|
/**
|
|
* Used as the [maximum length](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-number.max_safe_integer)
|
|
* of an array-like value.
|
|
*/
|
|
var MAX_SAFE_INTEGER = Math.pow(2, 53) - 1;
|
|
|
|
/** Used to store function metadata. */
|
|
var metaMap = WeakMap && new WeakMap;
|
|
|
|
/** Used to lookup unminified function names. */
|
|
var realNames = {};
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
* Creates a `lodash` object which wraps `value` to enable implicit chaining.
|
|
* Methods that operate on and return arrays, collections, and functions can
|
|
* be chained together. Methods that return a boolean or single value will
|
|
* automatically end the chain returning the unwrapped value. Explicit chaining
|
|
* may be enabled using `_.chain`. The execution of chained methods is lazy,
|
|
* that is, execution is deferred until `_#value` is implicitly or explicitly
|
|
* called.
|
|
*
|
|
* Lazy evaluation allows several methods to support shortcut fusion. Shortcut
|
|
* fusion is an optimization that merges iteratees to avoid creating intermediate
|
|
* arrays and reduce the number of iteratee executions.
|
|
*
|
|
* Chaining is supported in custom builds as long as the `_#value` method is
|
|
* directly or indirectly included in the build.
|
|
*
|
|
* In addition to lodash methods, wrappers have `Array` and `String` methods.
|
|
*
|
|
* The wrapper `Array` methods are:
|
|
* `concat`, `join`, `pop`, `push`, `reverse`, `shift`, `slice`, `sort`,
|
|
* `splice`, and `unshift`
|
|
*
|
|
* The wrapper `String` methods are:
|
|
* `replace` and `split`
|
|
*
|
|
* The wrapper methods that support shortcut fusion are:
|
|
* `compact`, `drop`, `dropRight`, `dropRightWhile`, `dropWhile`, `filter`,
|
|
* `first`, `initial`, `last`, `map`, `pluck`, `reject`, `rest`, `reverse`,
|
|
* `slice`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, `toArray`,
|
|
* and `where`
|
|
*
|
|
* The chainable wrapper methods are:
|
|
* `after`, `ary`, `assign`, `at`, `before`, `bind`, `bindAll`, `bindKey`,
|
|
* `callback`, `chain`, `chunk`, `commit`, `compact`, `concat`, `constant`,
|
|
* `countBy`, `create`, `curry`, `debounce`, `defaults`, `defer`, `delay`,
|
|
* `difference`, `drop`, `dropRight`, `dropRightWhile`, `dropWhile`, `fill`,
|
|
* `filter`, `flatten`, `flattenDeep`, `flow`, `flowRight`, `forEach`,
|
|
* `forEachRight`, `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `functions`,
|
|
* `groupBy`, `indexBy`, `initial`, `intersection`, `invert`, `invoke`, `keys`,
|
|
* `keysIn`, `map`, `mapValues`, `matches`, `matchesProperty`, `memoize`, `merge`,
|
|
* `mixin`, `negate`, `noop`, `omit`, `once`, `pairs`, `partial`, `partialRight`,
|
|
* `partition`, `pick`, `plant`, `pluck`, `property`, `propertyOf`, `pull`,
|
|
* `pullAt`, `push`, `range`, `rearg`, `reject`, `remove`, `rest`, `reverse`,
|
|
* `shuffle`, `slice`, `sort`, `sortBy`, `sortByAll`, `sortByOrder`, `splice`,
|
|
* `spread`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, `tap`,
|
|
* `throttle`, `thru`, `times`, `toArray`, `toPlainObject`, `transform`,
|
|
* `union`, `uniq`, `unshift`, `unzip`, `values`, `valuesIn`, `where`,
|
|
* `without`, `wrap`, `xor`, `zip`, and `zipObject`
|
|
*
|
|
* The wrapper methods that are **not** chainable by default are:
|
|
* `add`, `attempt`, `camelCase`, `capitalize`, `clone`, `cloneDeep`, `deburr`,
|
|
* `endsWith`, `escape`, `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`,
|
|
* `findLast`, `findLastIndex`, `findLastKey`, `findWhere`, `first`, `has`,
|
|
* `identity`, `includes`, `indexOf`, `inRange`, `isArguments`, `isArray`,
|
|
* `isBoolean`, `isDate`, `isElement`, `isEmpty`, `isEqual`, `isError`,
|
|
* `isFinite`,`isFunction`, `isMatch`, `isNative`, `isNaN`, `isNull`, `isNumber`,
|
|
* `isObject`, `isPlainObject`, `isRegExp`, `isString`, `isUndefined`,
|
|
* `isTypedArray`, `join`, `kebabCase`, `last`, `lastIndexOf`, `max`, `min`,
|
|
* `noConflict`, `now`, `pad`, `padLeft`, `padRight`, `parseInt`, `pop`,
|
|
* `random`, `reduce`, `reduceRight`, `repeat`, `result`, `runInContext`,
|
|
* `shift`, `size`, `snakeCase`, `some`, `sortedIndex`, `sortedLastIndex`,
|
|
* `startCase`, `startsWith`, `sum`, `template`, `trim`, `trimLeft`,
|
|
* `trimRight`, `trunc`, `unescape`, `uniqueId`, `value`, and `words`
|
|
*
|
|
* The wrapper method `sample` will return a wrapped value when `n` is provided,
|
|
* otherwise an unwrapped value is returned.
|
|
*
|
|
* @name _
|
|
* @constructor
|
|
* @category Chain
|
|
* @param {*} value The value to wrap in a `lodash` instance.
|
|
* @returns {Object} Returns the new `lodash` wrapper instance.
|
|
* @example
|
|
*
|
|
* var wrapped = _([1, 2, 3]);
|
|
*
|
|
* // returns an unwrapped value
|
|
* wrapped.reduce(function(sum, n) {
|
|
* return sum + n;
|
|
* });
|
|
* // => 6
|
|
*
|
|
* // returns a wrapped value
|
|
* var squares = wrapped.map(function(n) {
|
|
* return n * n;
|
|
* });
|
|
*
|
|
* _.isArray(squares);
|
|
* // => false
|
|
*
|
|
* _.isArray(squares.value());
|
|
* // => true
|
|
*/
|
|
function lodash(value) {
|
|
if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {
|
|
if (value instanceof LodashWrapper) {
|
|
return value;
|
|
}
|
|
if (hasOwnProperty.call(value, '__chain__') && hasOwnProperty.call(value, '__wrapped__')) {
|
|
return wrapperClone(value);
|
|
}
|
|
}
|
|
return new LodashWrapper(value);
|
|
}
|
|
|
|
/**
|
|
* The function whose prototype all chaining wrappers inherit from.
|
|
*
|
|
* @private
|
|
*/
|
|
function baseLodash() {
|
|
// No operation performed.
|
|
}
|
|
|
|
/**
|
|
* The base constructor for creating `lodash` wrapper objects.
|
|
*
|
|
* @private
|
|
* @param {*} value The value to wrap.
|
|
* @param {boolean} [chainAll] Enable chaining for all wrapper methods.
|
|
* @param {Array} [actions=[]] Actions to peform to resolve the unwrapped value.
|
|
*/
|
|
function LodashWrapper(value, chainAll, actions) {
|
|
this.__wrapped__ = value;
|
|
this.__actions__ = actions || [];
|
|
this.__chain__ = !!chainAll;
|
|
}
|
|
|
|
/**
|
|
* An object environment feature flags.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @type Object
|
|
*/
|
|
var support = lodash.support = {};
|
|
|
|
(function(x) {
|
|
|
|
/**
|
|
* Detect if functions can be decompiled by `Function#toString`
|
|
* (all but Firefox OS certified apps, older Opera mobile browsers, and
|
|
* the PlayStation 3; forced `false` for Windows 8 apps).
|
|
*
|
|
* @memberOf _.support
|
|
* @type boolean
|
|
*/
|
|
support.funcDecomp = /\bthis\b/.test(function() { return this; });
|
|
|
|
/**
|
|
* Detect if `Function#name` is supported (all but IE).
|
|
*
|
|
* @memberOf _.support
|
|
* @type boolean
|
|
*/
|
|
support.funcNames = typeof Function.name == 'string';
|
|
|
|
/**
|
|
* Detect if the DOM is supported.
|
|
*
|
|
* @memberOf _.support
|
|
* @type boolean
|
|
*/
|
|
try {
|
|
support.dom = document.createDocumentFragment().nodeType === 11;
|
|
} catch(e) {
|
|
support.dom = false;
|
|
}
|
|
|
|
/**
|
|
* Detect if `arguments` object indexes are non-enumerable.
|
|
*
|
|
* In Firefox < 4, IE < 9, PhantomJS, and Safari < 5.1 `arguments` object
|
|
* indexes are non-enumerable. Chrome < 25 and Node.js < 0.11.0 treat
|
|
* `arguments` object indexes as non-enumerable and fail `hasOwnProperty`
|
|
* checks for indexes that exceed their function's formal parameters with
|
|
* associated values of `0`.
|
|
*
|
|
* @memberOf _.support
|
|
* @type boolean
|
|
*/
|
|
try {
|
|
support.nonEnumArgs = !propertyIsEnumerable.call(arguments, 1);
|
|
} catch(e) {
|
|
support.nonEnumArgs = true;
|
|
}
|
|
}(0, 0));
|
|
|
|
/**
|
|
* By default, the template delimiters used by lodash are like those in
|
|
* embedded Ruby (ERB). Change the following template settings to use
|
|
* alternative delimiters.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @type Object
|
|
*/
|
|
lodash.templateSettings = {
|
|
|
|
/**
|
|
* Used to detect `data` property values to be HTML-escaped.
|
|
*
|
|
* @memberOf _.templateSettings
|
|
* @type RegExp
|
|
*/
|
|
'escape': reEscape,
|
|
|
|
/**
|
|
* Used to detect code to be evaluated.
|
|
*
|
|
* @memberOf _.templateSettings
|
|
* @type RegExp
|
|
*/
|
|
'evaluate': reEvaluate,
|
|
|
|
/**
|
|
* Used to detect `data` property values to inject.
|
|
*
|
|
* @memberOf _.templateSettings
|
|
* @type RegExp
|
|
*/
|
|
'interpolate': reInterpolate,
|
|
|
|
/**
|
|
* Used to reference the data object in the template text.
|
|
*
|
|
* @memberOf _.templateSettings
|
|
* @type string
|
|
*/
|
|
'variable': '',
|
|
|
|
/**
|
|
* Used to import variables into the compiled template.
|
|
*
|
|
* @memberOf _.templateSettings
|
|
* @type Object
|
|
*/
|
|
'imports': {
|
|
|
|
/**
|
|
* A reference to the `lodash` function.
|
|
*
|
|
* @memberOf _.templateSettings.imports
|
|
* @type Function
|
|
*/
|
|
'_': lodash
|
|
}
|
|
};
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
* Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.
|
|
*
|
|
* @private
|
|
* @param {*} value The value to wrap.
|
|
*/
|
|
function LazyWrapper(value) {
|
|
this.__wrapped__ = value;
|
|
this.__actions__ = null;
|
|
this.__dir__ = 1;
|
|
this.__dropCount__ = 0;
|
|
this.__filtered__ = false;
|
|
this.__iteratees__ = null;
|
|
this.__takeCount__ = POSITIVE_INFINITY;
|
|
this.__views__ = null;
|
|
}
|
|
|
|
/**
|
|
* Creates a clone of the lazy wrapper object.
|
|
*
|
|
* @private
|
|
* @name clone
|
|
* @memberOf LazyWrapper
|
|
* @returns {Object} Returns the cloned `LazyWrapper` object.
|
|
*/
|
|
function lazyClone() {
|
|
var actions = this.__actions__,
|
|
iteratees = this.__iteratees__,
|
|
views = this.__views__,
|
|
result = new LazyWrapper(this.__wrapped__);
|
|
|
|
result.__actions__ = actions ? arrayCopy(actions) : null;
|
|
result.__dir__ = this.__dir__;
|
|
result.__filtered__ = this.__filtered__;
|
|
result.__iteratees__ = iteratees ? arrayCopy(iteratees) : null;
|
|
result.__takeCount__ = this.__takeCount__;
|
|
result.__views__ = views ? arrayCopy(views) : null;
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Reverses the direction of lazy iteration.
|
|
*
|
|
* @private
|
|
* @name reverse
|
|
* @memberOf LazyWrapper
|
|
* @returns {Object} Returns the new reversed `LazyWrapper` object.
|
|
*/
|
|
function lazyReverse() {
|
|
if (this.__filtered__) {
|
|
var result = new LazyWrapper(this);
|
|
result.__dir__ = -1;
|
|
result.__filtered__ = true;
|
|
} else {
|
|
result = this.clone();
|
|
result.__dir__ *= -1;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Extracts the unwrapped value from its lazy wrapper.
|
|
*
|
|
* @private
|
|
* @name value
|
|
* @memberOf LazyWrapper
|
|
* @returns {*} Returns the unwrapped value.
|
|
*/
|
|
function lazyValue() {
|
|
var array = this.__wrapped__.value();
|
|
if (!isArray(array)) {
|
|
return baseWrapperValue(array, this.__actions__);
|
|
}
|
|
var dir = this.__dir__,
|
|
isRight = dir < 0,
|
|
view = getView(0, array.length, this.__views__),
|
|
start = view.start,
|
|
end = view.end,
|
|
length = end - start,
|
|
index = isRight ? end : (start - 1),
|
|
takeCount = nativeMin(length, this.__takeCount__),
|
|
iteratees = this.__iteratees__,
|
|
iterLength = iteratees ? iteratees.length : 0,
|
|
resIndex = 0,
|
|
result = [];
|
|
|
|
outer:
|
|
while (length-- && resIndex < takeCount) {
|
|
index += dir;
|
|
|
|
var iterIndex = -1,
|
|
value = array[index];
|
|
|
|
while (++iterIndex < iterLength) {
|
|
var data = iteratees[iterIndex],
|
|
iteratee = data.iteratee,
|
|
type = data.type;
|
|
|
|
if (type == LAZY_DROP_WHILE_FLAG) {
|
|
if (data.done && (isRight ? (index > data.index) : (index < data.index))) {
|
|
data.count = 0;
|
|
data.done = false;
|
|
}
|
|
data.index = index;
|
|
if (!data.done) {
|
|
var limit = data.limit;
|
|
if (!(data.done = limit > -1 ? (data.count++ >= limit) : !iteratee(value))) {
|
|
continue outer;
|
|
}
|
|
}
|
|
} else {
|
|
var computed = iteratee(value);
|
|
if (type == LAZY_MAP_FLAG) {
|
|
value = computed;
|
|
} else if (!computed) {
|
|
if (type == LAZY_FILTER_FLAG) {
|
|
continue outer;
|
|
} else {
|
|
break outer;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
result[resIndex++] = value;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
* Creates a cache object to store key/value pairs.
|
|
*
|
|
* @private
|
|
* @static
|
|
* @name Cache
|
|
* @memberOf _.memoize
|
|
*/
|
|
function MapCache() {
|
|
this.__data__ = {};
|
|
}
|
|
|
|
/**
|
|
* Removes `key` and its value from the cache.
|
|
*
|
|
* @private
|
|
* @name delete
|
|
* @memberOf _.memoize.Cache
|
|
* @param {string} key The key of the value to remove.
|
|
* @returns {boolean} Returns `true` if the entry was removed successfully, else `false`.
|
|
*/
|
|
function mapDelete(key) {
|
|
return this.has(key) && delete this.__data__[key];
|
|
}
|
|
|
|
/**
|
|
* Gets the cached value for `key`.
|
|
*
|
|
* @private
|
|
* @name get
|
|
* @memberOf _.memoize.Cache
|
|
* @param {string} key The key of the value to get.
|
|
* @returns {*} Returns the cached value.
|
|
*/
|
|
function mapGet(key) {
|
|
return key == '__proto__' ? undefined : this.__data__[key];
|
|
}
|
|
|
|
/**
|
|
* Checks if a cached value for `key` exists.
|
|
*
|
|
* @private
|
|
* @name has
|
|
* @memberOf _.memoize.Cache
|
|
* @param {string} key The key of the entry to check.
|
|
* @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
|
|
*/
|
|
function mapHas(key) {
|
|
return key != '__proto__' && hasOwnProperty.call(this.__data__, key);
|
|
}
|
|
|
|
/**
|
|
* Adds `value` to `key` of the cache.
|
|
*
|
|
* @private
|
|
* @name set
|
|
* @memberOf _.memoize.Cache
|
|
* @param {string} key The key of the value to cache.
|
|
* @param {*} value The value to cache.
|
|
* @returns {Object} Returns the cache object.
|
|
*/
|
|
function mapSet(key, value) {
|
|
if (key != '__proto__') {
|
|
this.__data__[key] = value;
|
|
}
|
|
return this;
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
*
|
|
* Creates a cache object to store unique values.
|
|
*
|
|
* @private
|
|
* @param {Array} [values] The values to cache.
|
|
*/
|
|
function SetCache(values) {
|
|
var length = values ? values.length : 0;
|
|
|
|
this.data = { 'hash': nativeCreate(null), 'set': new Set };
|
|
while (length--) {
|
|
this.push(values[length]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Checks if `value` is in `cache` mimicking the return signature of
|
|
* `_.indexOf` by returning `0` if the value is found, else `-1`.
|
|
*
|
|
* @private
|
|
* @param {Object} cache The cache to search.
|
|
* @param {*} value The value to search for.
|
|
* @returns {number} Returns `0` if `value` is found, else `-1`.
|
|
*/
|
|
function cacheIndexOf(cache, value) {
|
|
var data = cache.data,
|
|
result = (typeof value == 'string' || isObject(value)) ? data.set.has(value) : data.hash[value];
|
|
|
|
return result ? 0 : -1;
|
|
}
|
|
|
|
/**
|
|
* Adds `value` to the cache.
|
|
*
|
|
* @private
|
|
* @name push
|
|
* @memberOf SetCache
|
|
* @param {*} value The value to cache.
|
|
*/
|
|
function cachePush(value) {
|
|
var data = this.data;
|
|
if (typeof value == 'string' || isObject(value)) {
|
|
data.set.add(value);
|
|
} else {
|
|
data.hash[value] = true;
|
|
}
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
* Copies the values of `source` to `array`.
|
|
*
|
|
* @private
|
|
* @param {Array} source The array to copy values from.
|
|
* @param {Array} [array=[]] The array to copy values to.
|
|
* @returns {Array} Returns `array`.
|
|
*/
|
|
function arrayCopy(source, array) {
|
|
var index = -1,
|
|
length = source.length;
|
|
|
|
array || (array = Array(length));
|
|
while (++index < length) {
|
|
array[index] = source[index];
|
|
}
|
|
return array;
|
|
}
|
|
|
|
/**
|
|
* A specialized version of `_.forEach` for arrays without support for callback
|
|
* shorthands and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to iterate over.
|
|
* @param {Function} iteratee The function invoked per iteration.
|
|
* @returns {Array} Returns `array`.
|
|
*/
|
|
function arrayEach(array, iteratee) {
|
|
var index = -1,
|
|
length = array.length;
|
|
|
|
while (++index < length) {
|
|
if (iteratee(array[index], index, array) === false) {
|
|
break;
|
|
}
|
|
}
|
|
return array;
|
|
}
|
|
|
|
/**
|
|
* A specialized version of `_.forEachRight` for arrays without support for
|
|
* callback shorthands and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to iterate over.
|
|
* @param {Function} iteratee The function invoked per iteration.
|
|
* @returns {Array} Returns `array`.
|
|
*/
|
|
function arrayEachRight(array, iteratee) {
|
|
var length = array.length;
|
|
|
|
while (length--) {
|
|
if (iteratee(array[length], length, array) === false) {
|
|
break;
|
|
}
|
|
}
|
|
return array;
|
|
}
|
|
|
|
/**
|
|
* A specialized version of `_.every` for arrays without support for callback
|
|
* shorthands and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to iterate over.
|
|
* @param {Function} predicate The function invoked per iteration.
|
|
* @returns {boolean} Returns `true` if all elements pass the predicate check,
|
|
* else `false`.
|
|
*/
|
|
function arrayEvery(array, predicate) {
|
|
var index = -1,
|
|
length = array.length;
|
|
|
|
while (++index < length) {
|
|
if (!predicate(array[index], index, array)) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* A specialized version of `_.filter` for arrays without support for callback
|
|
* shorthands and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to iterate over.
|
|
* @param {Function} predicate The function invoked per iteration.
|
|
* @returns {Array} Returns the new filtered array.
|
|
*/
|
|
function arrayFilter(array, predicate) {
|
|
var index = -1,
|
|
length = array.length,
|
|
resIndex = -1,
|
|
result = [];
|
|
|
|
while (++index < length) {
|
|
var value = array[index];
|
|
if (predicate(value, index, array)) {
|
|
result[++resIndex] = value;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* A specialized version of `_.map` for arrays without support for callback
|
|
* shorthands and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to iterate over.
|
|
* @param {Function} iteratee The function invoked per iteration.
|
|
* @returns {Array} Returns the new mapped array.
|
|
*/
|
|
function arrayMap(array, iteratee) {
|
|
var index = -1,
|
|
length = array.length,
|
|
result = Array(length);
|
|
|
|
while (++index < length) {
|
|
result[index] = iteratee(array[index], index, array);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* A specialized version of `_.max` for arrays without support for iteratees.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to iterate over.
|
|
* @returns {*} Returns the maximum value.
|
|
*/
|
|
function arrayMax(array) {
|
|
var index = -1,
|
|
length = array.length,
|
|
result = NEGATIVE_INFINITY;
|
|
|
|
while (++index < length) {
|
|
var value = array[index];
|
|
if (value > result) {
|
|
result = value;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* A specialized version of `_.min` for arrays without support for iteratees.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to iterate over.
|
|
* @returns {*} Returns the minimum value.
|
|
*/
|
|
function arrayMin(array) {
|
|
var index = -1,
|
|
length = array.length,
|
|
result = POSITIVE_INFINITY;
|
|
|
|
while (++index < length) {
|
|
var value = array[index];
|
|
if (value < result) {
|
|
result = value;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* A specialized version of `_.reduce` for arrays without support for callback
|
|
* shorthands and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to iterate over.
|
|
* @param {Function} iteratee The function invoked per iteration.
|
|
* @param {*} [accumulator] The initial value.
|
|
* @param {boolean} [initFromArray] Specify using the first element of `array`
|
|
* as the initial value.
|
|
* @returns {*} Returns the accumulated value.
|
|
*/
|
|
function arrayReduce(array, iteratee, accumulator, initFromArray) {
|
|
var index = -1,
|
|
length = array.length;
|
|
|
|
if (initFromArray && length) {
|
|
accumulator = array[++index];
|
|
}
|
|
while (++index < length) {
|
|
accumulator = iteratee(accumulator, array[index], index, array);
|
|
}
|
|
return accumulator;
|
|
}
|
|
|
|
/**
|
|
* A specialized version of `_.reduceRight` for arrays without support for
|
|
* callback shorthands and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to iterate over.
|
|
* @param {Function} iteratee The function invoked per iteration.
|
|
* @param {*} [accumulator] The initial value.
|
|
* @param {boolean} [initFromArray] Specify using the last element of `array`
|
|
* as the initial value.
|
|
* @returns {*} Returns the accumulated value.
|
|
*/
|
|
function arrayReduceRight(array, iteratee, accumulator, initFromArray) {
|
|
var length = array.length;
|
|
if (initFromArray && length) {
|
|
accumulator = array[--length];
|
|
}
|
|
while (length--) {
|
|
accumulator = iteratee(accumulator, array[length], length, array);
|
|
}
|
|
return accumulator;
|
|
}
|
|
|
|
/**
|
|
* A specialized version of `_.some` for arrays without support for callback
|
|
* shorthands and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to iterate over.
|
|
* @param {Function} predicate The function invoked per iteration.
|
|
* @returns {boolean} Returns `true` if any element passes the predicate check,
|
|
* else `false`.
|
|
*/
|
|
function arraySome(array, predicate) {
|
|
var index = -1,
|
|
length = array.length;
|
|
|
|
while (++index < length) {
|
|
if (predicate(array[index], index, array)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* A specialized version of `_.sum` for arrays without support for iteratees.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to iterate over.
|
|
* @returns {number} Returns the sum.
|
|
*/
|
|
function arraySum(array) {
|
|
var length = array.length,
|
|
result = 0;
|
|
|
|
while (length--) {
|
|
result += +array[length] || 0;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Used by `_.defaults` to customize its `_.assign` use.
|
|
*
|
|
* @private
|
|
* @param {*} objectValue The destination object property value.
|
|
* @param {*} sourceValue The source object property value.
|
|
* @returns {*} Returns the value to assign to the destination object.
|
|
*/
|
|
function assignDefaults(objectValue, sourceValue) {
|
|
return typeof objectValue == 'undefined' ? sourceValue : objectValue;
|
|
}
|
|
|
|
/**
|
|
* Used by `_.template` to customize its `_.assign` use.
|
|
*
|
|
* **Note:** This method is like `assignDefaults` except that it ignores
|
|
* inherited property values when checking if a property is `undefined`.
|
|
*
|
|
* @private
|
|
* @param {*} objectValue The destination object property value.
|
|
* @param {*} sourceValue The source object property value.
|
|
* @param {string} key The key associated with the object and source values.
|
|
* @param {Object} object The destination object.
|
|
* @returns {*} Returns the value to assign to the destination object.
|
|
*/
|
|
function assignOwnDefaults(objectValue, sourceValue, key, object) {
|
|
return (typeof objectValue == 'undefined' || !hasOwnProperty.call(object, key))
|
|
? sourceValue
|
|
: objectValue;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.assign` without support for argument juggling,
|
|
* multiple sources, and `this` binding `customizer` functions.
|
|
*
|
|
* @private
|
|
* @param {Object} object The destination object.
|
|
* @param {Object} source The source object.
|
|
* @param {Function} [customizer] The function to customize assigning values.
|
|
* @returns {Object} Returns the destination object.
|
|
*/
|
|
function baseAssign(object, source, customizer) {
|
|
var props = keys(source);
|
|
if (!customizer) {
|
|
return baseCopy(source, object, props);
|
|
}
|
|
var index = -1,
|
|
length = props.length;
|
|
|
|
while (++index < length) {
|
|
var key = props[index],
|
|
value = object[key],
|
|
result = customizer(value, source[key], key, object, source);
|
|
|
|
if ((result === result ? (result !== value) : (value === value)) ||
|
|
(typeof value == 'undefined' && !(key in object))) {
|
|
object[key] = result;
|
|
}
|
|
}
|
|
return object;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.at` without support for strings and individual
|
|
* key arguments.
|
|
*
|
|
* @private
|
|
* @param {Array|Object} collection The collection to iterate over.
|
|
* @param {number[]|string[]} [props] The property names or indexes of elements to pick.
|
|
* @returns {Array} Returns the new array of picked elements.
|
|
*/
|
|
function baseAt(collection, props) {
|
|
var index = -1,
|
|
length = collection.length,
|
|
isArr = isLength(length),
|
|
propsLength = props.length,
|
|
result = Array(propsLength);
|
|
|
|
while(++index < propsLength) {
|
|
var key = props[index];
|
|
if (isArr) {
|
|
key = parseFloat(key);
|
|
result[index] = isIndex(key, length) ? collection[key] : undefined;
|
|
} else {
|
|
result[index] = collection[key];
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Copies the properties of `source` to `object`.
|
|
*
|
|
* @private
|
|
* @param {Object} source The object to copy properties from.
|
|
* @param {Object} [object={}] The object to copy properties to.
|
|
* @param {Array} props The property names to copy.
|
|
* @returns {Object} Returns `object`.
|
|
*/
|
|
function baseCopy(source, object, props) {
|
|
if (!props) {
|
|
props = object;
|
|
object = {};
|
|
}
|
|
var index = -1,
|
|
length = props.length;
|
|
|
|
while (++index < length) {
|
|
var key = props[index];
|
|
object[key] = source[key];
|
|
}
|
|
return object;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.callback` which supports specifying the
|
|
* number of arguments to provide to `func`.
|
|
*
|
|
* @private
|
|
* @param {*} [func=_.identity] The value to convert to a callback.
|
|
* @param {*} [thisArg] The `this` binding of `func`.
|
|
* @param {number} [argCount] The number of arguments to provide to `func`.
|
|
* @returns {Function} Returns the callback.
|
|
*/
|
|
function baseCallback(func, thisArg, argCount) {
|
|
var type = typeof func;
|
|
if (type == 'function') {
|
|
return typeof thisArg == 'undefined'
|
|
? func
|
|
: bindCallback(func, thisArg, argCount);
|
|
}
|
|
if (func == null) {
|
|
return identity;
|
|
}
|
|
if (type == 'object') {
|
|
return baseMatches(func);
|
|
}
|
|
return typeof thisArg == 'undefined'
|
|
? baseProperty(func + '')
|
|
: baseMatchesProperty(func + '', thisArg);
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.clone` without support for argument juggling
|
|
* and `this` binding `customizer` functions.
|
|
*
|
|
* @private
|
|
* @param {*} value The value to clone.
|
|
* @param {boolean} [isDeep] Specify a deep clone.
|
|
* @param {Function} [customizer] The function to customize cloning values.
|
|
* @param {string} [key] The key of `value`.
|
|
* @param {Object} [object] The object `value` belongs to.
|
|
* @param {Array} [stackA=[]] Tracks traversed source objects.
|
|
* @param {Array} [stackB=[]] Associates clones with source counterparts.
|
|
* @returns {*} Returns the cloned value.
|
|
*/
|
|
function baseClone(value, isDeep, customizer, key, object, stackA, stackB) {
|
|
var result;
|
|
if (customizer) {
|
|
result = object ? customizer(value, key, object) : customizer(value);
|
|
}
|
|
if (typeof result != 'undefined') {
|
|
return result;
|
|
}
|
|
if (!isObject(value)) {
|
|
return value;
|
|
}
|
|
var isArr = isArray(value);
|
|
if (isArr) {
|
|
result = initCloneArray(value);
|
|
if (!isDeep) {
|
|
return arrayCopy(value, result);
|
|
}
|
|
} else {
|
|
var tag = objToString.call(value),
|
|
isFunc = tag == funcTag;
|
|
|
|
if (tag == objectTag || tag == argsTag || (isFunc && !object)) {
|
|
result = initCloneObject(isFunc ? {} : value);
|
|
if (!isDeep) {
|
|
return baseCopy(value, result, keys(value));
|
|
}
|
|
} else {
|
|
return cloneableTags[tag]
|
|
? initCloneByTag(value, tag, isDeep)
|
|
: (object ? value : {});
|
|
}
|
|
}
|
|
// Check for circular references and return corresponding clone.
|
|
stackA || (stackA = []);
|
|
stackB || (stackB = []);
|
|
|
|
var length = stackA.length;
|
|
while (length--) {
|
|
if (stackA[length] == value) {
|
|
return stackB[length];
|
|
}
|
|
}
|
|
// Add the source value to the stack of traversed objects and associate it with its clone.
|
|
stackA.push(value);
|
|
stackB.push(result);
|
|
|
|
// Recursively populate clone (susceptible to call stack limits).
|
|
(isArr ? arrayEach : baseForOwn)(value, function(subValue, key) {
|
|
result[key] = baseClone(subValue, isDeep, customizer, key, value, stackA, stackB);
|
|
});
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.create` without support for assigning
|
|
* properties to the created object.
|
|
*
|
|
* @private
|
|
* @param {Object} prototype The object to inherit from.
|
|
* @returns {Object} Returns the new object.
|
|
*/
|
|
var baseCreate = (function() {
|
|
function Object() {}
|
|
return function(prototype) {
|
|
if (isObject(prototype)) {
|
|
Object.prototype = prototype;
|
|
var result = new Object;
|
|
Object.prototype = null;
|
|
}
|
|
return result || context.Object();
|
|
};
|
|
}());
|
|
|
|
/**
|
|
* The base implementation of `_.delay` and `_.defer` which accepts an index
|
|
* of where to slice the arguments to provide to `func`.
|
|
*
|
|
* @private
|
|
* @param {Function} func The function to delay.
|
|
* @param {number} wait The number of milliseconds to delay invocation.
|
|
* @param {Object} args The arguments provide to `func`.
|
|
* @returns {number} Returns the timer id.
|
|
*/
|
|
function baseDelay(func, wait, args) {
|
|
if (typeof func != 'function') {
|
|
throw new TypeError(FUNC_ERROR_TEXT);
|
|
}
|
|
return setTimeout(function() { func.apply(undefined, args); }, wait);
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.difference` which accepts a single array
|
|
* of values to exclude.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to inspect.
|
|
* @param {Array} values The values to exclude.
|
|
* @returns {Array} Returns the new array of filtered values.
|
|
*/
|
|
function baseDifference(array, values) {
|
|
var length = array ? array.length : 0,
|
|
result = [];
|
|
|
|
if (!length) {
|
|
return result;
|
|
}
|
|
var index = -1,
|
|
indexOf = getIndexOf(),
|
|
isCommon = indexOf == baseIndexOf,
|
|
cache = (isCommon && values.length >= 200) ? createCache(values) : null,
|
|
valuesLength = values.length;
|
|
|
|
if (cache) {
|
|
indexOf = cacheIndexOf;
|
|
isCommon = false;
|
|
values = cache;
|
|
}
|
|
outer:
|
|
while (++index < length) {
|
|
var value = array[index];
|
|
|
|
if (isCommon && value === value) {
|
|
var valuesIndex = valuesLength;
|
|
while (valuesIndex--) {
|
|
if (values[valuesIndex] === value) {
|
|
continue outer;
|
|
}
|
|
}
|
|
result.push(value);
|
|
}
|
|
else if (indexOf(values, value, 0) < 0) {
|
|
result.push(value);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.forEach` without support for callback
|
|
* shorthands and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function} iteratee The function invoked per iteration.
|
|
* @returns {Array|Object|string} Returns `collection`.
|
|
*/
|
|
var baseEach = createBaseEach(baseForOwn);
|
|
|
|
/**
|
|
* The base implementation of `_.forEachRight` without support for callback
|
|
* shorthands and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function} iteratee The function invoked per iteration.
|
|
* @returns {Array|Object|string} Returns `collection`.
|
|
*/
|
|
var baseEachRight = createBaseEach(baseForOwnRight, true);
|
|
|
|
/**
|
|
* The base implementation of `_.every` without support for callback
|
|
* shorthands and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function} predicate The function invoked per iteration.
|
|
* @returns {boolean} Returns `true` if all elements pass the predicate check,
|
|
* else `false`
|
|
*/
|
|
function baseEvery(collection, predicate) {
|
|
var result = true;
|
|
baseEach(collection, function(value, index, collection) {
|
|
result = !!predicate(value, index, collection);
|
|
return result;
|
|
});
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.fill` without an iteratee call guard.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to fill.
|
|
* @param {*} value The value to fill `array` with.
|
|
* @param {number} [start=0] The start position.
|
|
* @param {number} [end=array.length] The end position.
|
|
* @returns {Array} Returns `array`.
|
|
*/
|
|
function baseFill(array, value, start, end) {
|
|
var length = array.length;
|
|
|
|
start = start == null ? 0 : (+start || 0);
|
|
if (start < 0) {
|
|
start = -start > length ? 0 : (length + start);
|
|
}
|
|
end = (typeof end == 'undefined' || end > length) ? length : (+end || 0);
|
|
if (end < 0) {
|
|
end += length;
|
|
}
|
|
length = start > end ? 0 : (end >>> 0);
|
|
start >>>= 0;
|
|
|
|
while (start < length) {
|
|
array[start++] = value;
|
|
}
|
|
return array;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.filter` without support for callback
|
|
* shorthands and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function} predicate The function invoked per iteration.
|
|
* @returns {Array} Returns the new filtered array.
|
|
*/
|
|
function baseFilter(collection, predicate) {
|
|
var result = [];
|
|
baseEach(collection, function(value, index, collection) {
|
|
if (predicate(value, index, collection)) {
|
|
result.push(value);
|
|
}
|
|
});
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.find`, `_.findLast`, `_.findKey`, and `_.findLastKey`,
|
|
* without support for callback shorthands and `this` binding, which iterates
|
|
* over `collection` using the provided `eachFunc`.
|
|
*
|
|
* @private
|
|
* @param {Array|Object|string} collection The collection to search.
|
|
* @param {Function} predicate The function invoked per iteration.
|
|
* @param {Function} eachFunc The function to iterate over `collection`.
|
|
* @param {boolean} [retKey] Specify returning the key of the found element
|
|
* instead of the element itself.
|
|
* @returns {*} Returns the found element or its key, else `undefined`.
|
|
*/
|
|
function baseFind(collection, predicate, eachFunc, retKey) {
|
|
var result;
|
|
eachFunc(collection, function(value, key, collection) {
|
|
if (predicate(value, key, collection)) {
|
|
result = retKey ? key : value;
|
|
return false;
|
|
}
|
|
});
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.flatten` with added support for restricting
|
|
* flattening and specifying the start index.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to flatten.
|
|
* @param {boolean} isDeep Specify a deep flatten.
|
|
* @param {boolean} isStrict Restrict flattening to arrays and `arguments` objects.
|
|
* @returns {Array} Returns the new flattened array.
|
|
*/
|
|
function baseFlatten(array, isDeep, isStrict) {
|
|
var index = -1,
|
|
length = array.length,
|
|
resIndex = -1,
|
|
result = [];
|
|
|
|
while (++index < length) {
|
|
var value = array[index];
|
|
|
|
if (isObjectLike(value) && isLength(value.length) && (isArray(value) || isArguments(value))) {
|
|
if (isDeep) {
|
|
// Recursively flatten arrays (susceptible to call stack limits).
|
|
value = baseFlatten(value, isDeep, isStrict);
|
|
}
|
|
var valIndex = -1,
|
|
valLength = value.length;
|
|
|
|
result.length += valLength;
|
|
while (++valIndex < valLength) {
|
|
result[++resIndex] = value[valIndex];
|
|
}
|
|
} else if (!isStrict) {
|
|
result[++resIndex] = value;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `baseForIn` and `baseForOwn` which iterates
|
|
* over `object` properties returned by `keysFunc` invoking `iteratee` for
|
|
* each property. Iterator functions may exit iteration early by explicitly
|
|
* returning `false`.
|
|
*
|
|
* @private
|
|
* @param {Object} object The object to iterate over.
|
|
* @param {Function} iteratee The function invoked per iteration.
|
|
* @param {Function} keysFunc The function to get the keys of `object`.
|
|
* @returns {Object} Returns `object`.
|
|
*/
|
|
var baseFor = createBaseFor();
|
|
|
|
/**
|
|
* This function is like `baseFor` except that it iterates over properties
|
|
* in the opposite order.
|
|
*
|
|
* @private
|
|
* @param {Object} object The object to iterate over.
|
|
* @param {Function} iteratee The function invoked per iteration.
|
|
* @param {Function} keysFunc The function to get the keys of `object`.
|
|
* @returns {Object} Returns `object`.
|
|
*/
|
|
var baseForRight = createBaseFor(true);
|
|
|
|
/**
|
|
* The base implementation of `_.forIn` without support for callback
|
|
* shorthands and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Object} object The object to iterate over.
|
|
* @param {Function} iteratee The function invoked per iteration.
|
|
* @returns {Object} Returns `object`.
|
|
*/
|
|
function baseForIn(object, iteratee) {
|
|
return baseFor(object, iteratee, keysIn);
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.forOwn` without support for callback
|
|
* shorthands and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Object} object The object to iterate over.
|
|
* @param {Function} iteratee The function invoked per iteration.
|
|
* @returns {Object} Returns `object`.
|
|
*/
|
|
function baseForOwn(object, iteratee) {
|
|
return baseFor(object, iteratee, keys);
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.forOwnRight` without support for callback
|
|
* shorthands and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Object} object The object to iterate over.
|
|
* @param {Function} iteratee The function invoked per iteration.
|
|
* @returns {Object} Returns `object`.
|
|
*/
|
|
function baseForOwnRight(object, iteratee) {
|
|
return baseForRight(object, iteratee, keys);
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.functions` which creates an array of
|
|
* `object` function property names filtered from those provided.
|
|
*
|
|
* @private
|
|
* @param {Object} object The object to inspect.
|
|
* @param {Array} props The property names to filter.
|
|
* @returns {Array} Returns the new array of filtered property names.
|
|
*/
|
|
function baseFunctions(object, props) {
|
|
var index = -1,
|
|
length = props.length,
|
|
resIndex = -1,
|
|
result = [];
|
|
|
|
while (++index < length) {
|
|
var key = props[index];
|
|
if (isFunction(object[key])) {
|
|
result[++resIndex] = key;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.isEqual` without support for `this` binding
|
|
* `customizer` functions.
|
|
*
|
|
* @private
|
|
* @param {*} value The value to compare.
|
|
* @param {*} other The other value to compare.
|
|
* @param {Function} [customizer] The function to customize comparing values.
|
|
* @param {boolean} [isLoose] Specify performing partial comparisons.
|
|
* @param {Array} [stackA] Tracks traversed `value` objects.
|
|
* @param {Array} [stackB] Tracks traversed `other` objects.
|
|
* @returns {boolean} Returns `true` if the values are equivalent, else `false`.
|
|
*/
|
|
function baseIsEqual(value, other, customizer, isLoose, stackA, stackB) {
|
|
// Exit early for identical values.
|
|
if (value === other) {
|
|
// Treat `+0` vs. `-0` as not equal.
|
|
return value !== 0 || (1 / value == 1 / other);
|
|
}
|
|
var valType = typeof value,
|
|
othType = typeof other;
|
|
|
|
// Exit early for unlike primitive values.
|
|
if ((valType != 'function' && valType != 'object' && othType != 'function' && othType != 'object') ||
|
|
value == null || other == null) {
|
|
// Return `false` unless both values are `NaN`.
|
|
return value !== value && other !== other;
|
|
}
|
|
return baseIsEqualDeep(value, other, baseIsEqual, customizer, isLoose, stackA, stackB);
|
|
}
|
|
|
|
/**
|
|
* A specialized version of `baseIsEqual` for arrays and objects which performs
|
|
* deep comparisons and tracks traversed objects enabling objects with circular
|
|
* references to be compared.
|
|
*
|
|
* @private
|
|
* @param {Object} object The object to compare.
|
|
* @param {Object} other The other object to compare.
|
|
* @param {Function} equalFunc The function to determine equivalents of values.
|
|
* @param {Function} [customizer] The function to customize comparing objects.
|
|
* @param {boolean} [isLoose] Specify performing partial comparisons.
|
|
* @param {Array} [stackA=[]] Tracks traversed `value` objects.
|
|
* @param {Array} [stackB=[]] Tracks traversed `other` objects.
|
|
* @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
|
|
*/
|
|
function baseIsEqualDeep(object, other, equalFunc, customizer, isLoose, stackA, stackB) {
|
|
var objIsArr = isArray(object),
|
|
othIsArr = isArray(other),
|
|
objTag = arrayTag,
|
|
othTag = arrayTag;
|
|
|
|
if (!objIsArr) {
|
|
objTag = objToString.call(object);
|
|
if (objTag == argsTag) {
|
|
objTag = objectTag;
|
|
} else if (objTag != objectTag) {
|
|
objIsArr = isTypedArray(object);
|
|
}
|
|
}
|
|
if (!othIsArr) {
|
|
othTag = objToString.call(other);
|
|
if (othTag == argsTag) {
|
|
othTag = objectTag;
|
|
} else if (othTag != objectTag) {
|
|
othIsArr = isTypedArray(other);
|
|
}
|
|
}
|
|
var objIsObj = (objTag == objectTag || (isLoose && objTag == funcTag)),
|
|
othIsObj = (othTag == objectTag || (isLoose && othTag == funcTag)),
|
|
isSameTag = objTag == othTag;
|
|
|
|
if (isSameTag && !(objIsArr || objIsObj)) {
|
|
return equalByTag(object, other, objTag);
|
|
}
|
|
if (isLoose) {
|
|
if (!isSameTag && !(objIsObj && othIsObj)) {
|
|
return false;
|
|
}
|
|
} else {
|
|
var valWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),
|
|
othWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__');
|
|
|
|
if (valWrapped || othWrapped) {
|
|
return equalFunc(valWrapped ? object.value() : object, othWrapped ? other.value() : other, customizer, isLoose, stackA, stackB);
|
|
}
|
|
if (!isSameTag) {
|
|
return false;
|
|
}
|
|
}
|
|
// Assume cyclic values are equal.
|
|
// For more information on detecting circular references see https://es5.github.io/#JO.
|
|
stackA || (stackA = []);
|
|
stackB || (stackB = []);
|
|
|
|
var length = stackA.length;
|
|
while (length--) {
|
|
if (stackA[length] == object) {
|
|
return stackB[length] == other;
|
|
}
|
|
}
|
|
// Add `object` and `other` to the stack of traversed objects.
|
|
stackA.push(object);
|
|
stackB.push(other);
|
|
|
|
var result = (objIsArr ? equalArrays : equalObjects)(object, other, equalFunc, customizer, isLoose, stackA, stackB);
|
|
|
|
stackA.pop();
|
|
stackB.pop();
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.isMatch` without support for callback
|
|
* shorthands and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Object} object The object to inspect.
|
|
* @param {Array} props The source property names to match.
|
|
* @param {Array} values The source values to match.
|
|
* @param {Array} strictCompareFlags Strict comparison flags for source values.
|
|
* @param {Function} [customizer] The function to customize comparing objects.
|
|
* @returns {boolean} Returns `true` if `object` is a match, else `false`.
|
|
*/
|
|
function baseIsMatch(object, props, values, strictCompareFlags, customizer) {
|
|
var index = -1,
|
|
length = props.length,
|
|
noCustomizer = !customizer;
|
|
|
|
while (++index < length) {
|
|
if ((noCustomizer && strictCompareFlags[index])
|
|
? values[index] !== object[props[index]]
|
|
: !(props[index] in object)
|
|
) {
|
|
return false;
|
|
}
|
|
}
|
|
index = -1;
|
|
while (++index < length) {
|
|
var key = props[index],
|
|
objValue = object[key],
|
|
srcValue = values[index];
|
|
|
|
if (noCustomizer && strictCompareFlags[index]) {
|
|
var result = typeof objValue != 'undefined' || (key in object);
|
|
} else {
|
|
result = customizer ? customizer(objValue, srcValue, key) : undefined;
|
|
if (typeof result == 'undefined') {
|
|
result = baseIsEqual(srcValue, objValue, customizer, true);
|
|
}
|
|
}
|
|
if (!result) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.map` without support for callback shorthands
|
|
* and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function} iteratee The function invoked per iteration.
|
|
* @returns {Array} Returns the new mapped array.
|
|
*/
|
|
function baseMap(collection, iteratee) {
|
|
var result = [];
|
|
baseEach(collection, function(value, key, collection) {
|
|
result.push(iteratee(value, key, collection));
|
|
});
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.matches` which does not clone `source`.
|
|
*
|
|
* @private
|
|
* @param {Object} source The object of property values to match.
|
|
* @returns {Function} Returns the new function.
|
|
*/
|
|
function baseMatches(source) {
|
|
var props = keys(source),
|
|
length = props.length;
|
|
|
|
if (!length) {
|
|
return constant(true);
|
|
}
|
|
if (length == 1) {
|
|
var key = props[0],
|
|
value = source[key];
|
|
|
|
if (isStrictComparable(value)) {
|
|
return function(object) {
|
|
return object != null && object[key] === value &&
|
|
(typeof value != 'undefined' || (key in toObject(object)));
|
|
};
|
|
}
|
|
}
|
|
var values = Array(length),
|
|
strictCompareFlags = Array(length);
|
|
|
|
while (length--) {
|
|
value = source[props[length]];
|
|
values[length] = value;
|
|
strictCompareFlags[length] = isStrictComparable(value);
|
|
}
|
|
return function(object) {
|
|
return object != null && baseIsMatch(toObject(object), props, values, strictCompareFlags);
|
|
};
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.matchesProperty` which does not coerce `key`
|
|
* to a string.
|
|
*
|
|
* @private
|
|
* @param {string} key The key of the property to get.
|
|
* @param {*} value The value to compare.
|
|
* @returns {Function} Returns the new function.
|
|
*/
|
|
function baseMatchesProperty(key, value) {
|
|
if (isStrictComparable(value)) {
|
|
return function(object) {
|
|
return object != null && object[key] === value &&
|
|
(typeof value != 'undefined' || (key in toObject(object)));
|
|
};
|
|
}
|
|
return function(object) {
|
|
return object != null && baseIsEqual(value, object[key], null, true);
|
|
};
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.merge` without support for argument juggling,
|
|
* multiple sources, and `this` binding `customizer` functions.
|
|
*
|
|
* @private
|
|
* @param {Object} object The destination object.
|
|
* @param {Object} source The source object.
|
|
* @param {Function} [customizer] The function to customize merging properties.
|
|
* @param {Array} [stackA=[]] Tracks traversed source objects.
|
|
* @param {Array} [stackB=[]] Associates values with source counterparts.
|
|
* @returns {Object} Returns the destination object.
|
|
*/
|
|
function baseMerge(object, source, customizer, stackA, stackB) {
|
|
if (!isObject(object)) {
|
|
return object;
|
|
}
|
|
var isSrcArr = isLength(source.length) && (isArray(source) || isTypedArray(source));
|
|
(isSrcArr ? arrayEach : baseForOwn)(source, function(srcValue, key, source) {
|
|
if (isObjectLike(srcValue)) {
|
|
stackA || (stackA = []);
|
|
stackB || (stackB = []);
|
|
return baseMergeDeep(object, source, key, baseMerge, customizer, stackA, stackB);
|
|
}
|
|
var value = object[key],
|
|
result = customizer ? customizer(value, srcValue, key, object, source) : undefined,
|
|
isCommon = typeof result == 'undefined';
|
|
|
|
if (isCommon) {
|
|
result = srcValue;
|
|
}
|
|
if ((isSrcArr || typeof result != 'undefined') &&
|
|
(isCommon || (result === result ? (result !== value) : (value === value)))) {
|
|
object[key] = result;
|
|
}
|
|
});
|
|
return object;
|
|
}
|
|
|
|
/**
|
|
* A specialized version of `baseMerge` for arrays and objects which performs
|
|
* deep merges and tracks traversed objects enabling objects with circular
|
|
* references to be merged.
|
|
*
|
|
* @private
|
|
* @param {Object} object The destination object.
|
|
* @param {Object} source The source object.
|
|
* @param {string} key The key of the value to merge.
|
|
* @param {Function} mergeFunc The function to merge values.
|
|
* @param {Function} [customizer] The function to customize merging properties.
|
|
* @param {Array} [stackA=[]] Tracks traversed source objects.
|
|
* @param {Array} [stackB=[]] Associates values with source counterparts.
|
|
* @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
|
|
*/
|
|
function baseMergeDeep(object, source, key, mergeFunc, customizer, stackA, stackB) {
|
|
var length = stackA.length,
|
|
srcValue = source[key];
|
|
|
|
while (length--) {
|
|
if (stackA[length] == srcValue) {
|
|
object[key] = stackB[length];
|
|
return;
|
|
}
|
|
}
|
|
var value = object[key],
|
|
result = customizer ? customizer(value, srcValue, key, object, source) : undefined,
|
|
isCommon = typeof result == 'undefined';
|
|
|
|
if (isCommon) {
|
|
result = srcValue;
|
|
if (isLength(srcValue.length) && (isArray(srcValue) || isTypedArray(srcValue))) {
|
|
result = isArray(value)
|
|
? value
|
|
: ((value && value.length) ? arrayCopy(value) : []);
|
|
}
|
|
else if (isPlainObject(srcValue) || isArguments(srcValue)) {
|
|
result = isArguments(value)
|
|
? toPlainObject(value)
|
|
: (isPlainObject(value) ? value : {});
|
|
}
|
|
else {
|
|
isCommon = false;
|
|
}
|
|
}
|
|
// Add the source value to the stack of traversed objects and associate
|
|
// it with its merged value.
|
|
stackA.push(srcValue);
|
|
stackB.push(result);
|
|
|
|
if (isCommon) {
|
|
// Recursively merge objects and arrays (susceptible to call stack limits).
|
|
object[key] = mergeFunc(result, srcValue, customizer, stackA, stackB);
|
|
} else if (result === result ? (result !== value) : (value === value)) {
|
|
object[key] = result;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.property` which does not coerce `key` to a string.
|
|
*
|
|
* @private
|
|
* @param {string} key The key of the property to get.
|
|
* @returns {Function} Returns the new function.
|
|
*/
|
|
function baseProperty(key) {
|
|
return function(object) {
|
|
return object == null ? undefined : object[key];
|
|
};
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.random` without support for argument juggling
|
|
* and returning floating-point numbers.
|
|
*
|
|
* @private
|
|
* @param {number} min The minimum possible value.
|
|
* @param {number} max The maximum possible value.
|
|
* @returns {number} Returns the random number.
|
|
*/
|
|
function baseRandom(min, max) {
|
|
return min + floor(nativeRandom() * (max - min + 1));
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.reduce` and `_.reduceRight` without support
|
|
* for callback shorthands and `this` binding, which iterates over `collection`
|
|
* using the provided `eachFunc`.
|
|
*
|
|
* @private
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function} iteratee The function invoked per iteration.
|
|
* @param {*} accumulator The initial value.
|
|
* @param {boolean} initFromCollection Specify using the first or last element
|
|
* of `collection` as the initial value.
|
|
* @param {Function} eachFunc The function to iterate over `collection`.
|
|
* @returns {*} Returns the accumulated value.
|
|
*/
|
|
function baseReduce(collection, iteratee, accumulator, initFromCollection, eachFunc) {
|
|
eachFunc(collection, function(value, index, collection) {
|
|
accumulator = initFromCollection
|
|
? (initFromCollection = false, value)
|
|
: iteratee(accumulator, value, index, collection);
|
|
});
|
|
return accumulator;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `setData` without support for hot loop detection.
|
|
*
|
|
* @private
|
|
* @param {Function} func The function to associate metadata with.
|
|
* @param {*} data The metadata.
|
|
* @returns {Function} Returns `func`.
|
|
*/
|
|
var baseSetData = !metaMap ? identity : function(func, data) {
|
|
metaMap.set(func, data);
|
|
return func;
|
|
};
|
|
|
|
/**
|
|
* The base implementation of `_.slice` without an iteratee call guard.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to slice.
|
|
* @param {number} [start=0] The start position.
|
|
* @param {number} [end=array.length] The end position.
|
|
* @returns {Array} Returns the slice of `array`.
|
|
*/
|
|
function baseSlice(array, start, end) {
|
|
var index = -1,
|
|
length = array.length;
|
|
|
|
start = start == null ? 0 : (+start || 0);
|
|
if (start < 0) {
|
|
start = -start > length ? 0 : (length + start);
|
|
}
|
|
end = (typeof end == 'undefined' || end > length) ? length : (+end || 0);
|
|
if (end < 0) {
|
|
end += length;
|
|
}
|
|
length = start > end ? 0 : ((end - start) >>> 0);
|
|
start >>>= 0;
|
|
|
|
var result = Array(length);
|
|
while (++index < length) {
|
|
result[index] = array[index + start];
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.some` without support for callback shorthands
|
|
* and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function} predicate The function invoked per iteration.
|
|
* @returns {boolean} Returns `true` if any element passes the predicate check,
|
|
* else `false`.
|
|
*/
|
|
function baseSome(collection, predicate) {
|
|
var result;
|
|
|
|
baseEach(collection, function(value, index, collection) {
|
|
result = predicate(value, index, collection);
|
|
return !result;
|
|
});
|
|
return !!result;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.sortBy` which uses `comparer` to define
|
|
* the sort order of `array` and replaces criteria objects with their
|
|
* corresponding values.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to sort.
|
|
* @param {Function} comparer The function to define sort order.
|
|
* @returns {Array} Returns `array`.
|
|
*/
|
|
function baseSortBy(array, comparer) {
|
|
var length = array.length;
|
|
|
|
array.sort(comparer);
|
|
while (length--) {
|
|
array[length] = array[length].value;
|
|
}
|
|
return array;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.sortByOrder` without param guards.
|
|
*
|
|
* @private
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {string[]} props The property names to sort by.
|
|
* @param {boolean[]} orders The sort orders of `props`.
|
|
* @returns {Array} Returns the new sorted array.
|
|
*/
|
|
function baseSortByOrder(collection, props, orders) {
|
|
var index = -1,
|
|
length = collection.length,
|
|
result = isLength(length) ? Array(length) : [];
|
|
|
|
baseEach(collection, function(value) {
|
|
var length = props.length,
|
|
criteria = Array(length);
|
|
|
|
while (length--) {
|
|
criteria[length] = value == null ? undefined : value[props[length]];
|
|
}
|
|
result[++index] = { 'criteria': criteria, 'index': index, 'value': value };
|
|
});
|
|
|
|
return baseSortBy(result, function(object, other) {
|
|
return compareMultiple(object, other, orders);
|
|
});
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.sum` without support for callback shorthands
|
|
* and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function} iteratee The function invoked per iteration.
|
|
* @returns {number} Returns the sum.
|
|
*/
|
|
function baseSum(collection, iteratee) {
|
|
var result = 0;
|
|
baseEach(collection, function(value, index, collection) {
|
|
result += +iteratee(value, index, collection) || 0;
|
|
});
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.uniq` without support for callback shorthands
|
|
* and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to inspect.
|
|
* @param {Function} [iteratee] The function invoked per iteration.
|
|
* @returns {Array} Returns the new duplicate-value-free array.
|
|
*/
|
|
function baseUniq(array, iteratee) {
|
|
var index = -1,
|
|
indexOf = getIndexOf(),
|
|
length = array.length,
|
|
isCommon = indexOf == baseIndexOf,
|
|
isLarge = isCommon && length >= 200,
|
|
seen = isLarge ? createCache() : null,
|
|
result = [];
|
|
|
|
if (seen) {
|
|
indexOf = cacheIndexOf;
|
|
isCommon = false;
|
|
} else {
|
|
isLarge = false;
|
|
seen = iteratee ? [] : result;
|
|
}
|
|
outer:
|
|
while (++index < length) {
|
|
var value = array[index],
|
|
computed = iteratee ? iteratee(value, index, array) : value;
|
|
|
|
if (isCommon && value === value) {
|
|
var seenIndex = seen.length;
|
|
while (seenIndex--) {
|
|
if (seen[seenIndex] === computed) {
|
|
continue outer;
|
|
}
|
|
}
|
|
if (iteratee) {
|
|
seen.push(computed);
|
|
}
|
|
result.push(value);
|
|
}
|
|
else if (indexOf(seen, computed, 0) < 0) {
|
|
if (iteratee || isLarge) {
|
|
seen.push(computed);
|
|
}
|
|
result.push(value);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.values` and `_.valuesIn` which creates an
|
|
* array of `object` property values corresponding to the property names
|
|
* returned by `keysFunc`.
|
|
*
|
|
* @private
|
|
* @param {Object} object The object to query.
|
|
* @param {Array} props The property names to get values for.
|
|
* @returns {Object} Returns the array of property values.
|
|
*/
|
|
function baseValues(object, props) {
|
|
var index = -1,
|
|
length = props.length,
|
|
result = Array(length);
|
|
|
|
while (++index < length) {
|
|
result[index] = object[props[index]];
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `_.dropRightWhile`, `_.dropWhile`, `_.takeRightWhile`,
|
|
* and `_.takeWhile` without support for callback shorthands and `this` binding.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to query.
|
|
* @param {Function} predicate The function invoked per iteration.
|
|
* @param {boolean} [isDrop] Specify dropping elements instead of taking them.
|
|
* @param {boolean} [fromRight] Specify iterating from right to left.
|
|
* @returns {Array} Returns the slice of `array`.
|
|
*/
|
|
function baseWhile(array, predicate, isDrop, fromRight) {
|
|
var length = array.length,
|
|
index = fromRight ? length : -1;
|
|
|
|
while ((fromRight ? index-- : ++index < length) && predicate(array[index], index, array)) {}
|
|
return isDrop
|
|
? baseSlice(array, (fromRight ? 0 : index), (fromRight ? index + 1 : length))
|
|
: baseSlice(array, (fromRight ? index + 1 : 0), (fromRight ? length : index));
|
|
}
|
|
|
|
/**
|
|
* The base implementation of `wrapperValue` which returns the result of
|
|
* performing a sequence of actions on the unwrapped `value`, where each
|
|
* successive action is supplied the return value of the previous.
|
|
*
|
|
* @private
|
|
* @param {*} value The unwrapped value.
|
|
* @param {Array} actions Actions to peform to resolve the unwrapped value.
|
|
* @returns {*} Returns the resolved value.
|
|
*/
|
|
function baseWrapperValue(value, actions) {
|
|
var result = value;
|
|
if (result instanceof LazyWrapper) {
|
|
result = result.value();
|
|
}
|
|
var index = -1,
|
|
length = actions.length;
|
|
|
|
while (++index < length) {
|
|
var args = [result],
|
|
action = actions[index];
|
|
|
|
push.apply(args, action.args);
|
|
result = action.func.apply(action.thisArg, args);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Performs a binary search of `array` to determine the index at which `value`
|
|
* should be inserted into `array` in order to maintain its sort order.
|
|
*
|
|
* @private
|
|
* @param {Array} array The sorted array to inspect.
|
|
* @param {*} value The value to evaluate.
|
|
* @param {boolean} [retHighest] Specify returning the highest qualified index.
|
|
* @returns {number} Returns the index at which `value` should be inserted
|
|
* into `array`.
|
|
*/
|
|
function binaryIndex(array, value, retHighest) {
|
|
var low = 0,
|
|
high = array ? array.length : low;
|
|
|
|
if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {
|
|
while (low < high) {
|
|
var mid = (low + high) >>> 1,
|
|
computed = array[mid];
|
|
|
|
if (retHighest ? (computed <= value) : (computed < value)) {
|
|
low = mid + 1;
|
|
} else {
|
|
high = mid;
|
|
}
|
|
}
|
|
return high;
|
|
}
|
|
return binaryIndexBy(array, value, identity, retHighest);
|
|
}
|
|
|
|
/**
|
|
* This function is like `binaryIndex` except that it invokes `iteratee` for
|
|
* `value` and each element of `array` to compute their sort ranking. The
|
|
* iteratee is invoked with one argument; (value).
|
|
*
|
|
* @private
|
|
* @param {Array} array The sorted array to inspect.
|
|
* @param {*} value The value to evaluate.
|
|
* @param {Function} iteratee The function invoked per iteration.
|
|
* @param {boolean} [retHighest] Specify returning the highest qualified index.
|
|
* @returns {number} Returns the index at which `value` should be inserted
|
|
* into `array`.
|
|
*/
|
|
function binaryIndexBy(array, value, iteratee, retHighest) {
|
|
value = iteratee(value);
|
|
|
|
var low = 0,
|
|
high = array ? array.length : 0,
|
|
valIsNaN = value !== value,
|
|
valIsUndef = typeof value == 'undefined';
|
|
|
|
while (low < high) {
|
|
var mid = floor((low + high) / 2),
|
|
computed = iteratee(array[mid]),
|
|
isReflexive = computed === computed;
|
|
|
|
if (valIsNaN) {
|
|
var setLow = isReflexive || retHighest;
|
|
} else if (valIsUndef) {
|
|
setLow = isReflexive && (retHighest || typeof computed != 'undefined');
|
|
} else {
|
|
setLow = retHighest ? (computed <= value) : (computed < value);
|
|
}
|
|
if (setLow) {
|
|
low = mid + 1;
|
|
} else {
|
|
high = mid;
|
|
}
|
|
}
|
|
return nativeMin(high, MAX_ARRAY_INDEX);
|
|
}
|
|
|
|
/**
|
|
* A specialized version of `baseCallback` which only supports `this` binding
|
|
* and specifying the number of arguments to provide to `func`.
|
|
*
|
|
* @private
|
|
* @param {Function} func The function to bind.
|
|
* @param {*} thisArg The `this` binding of `func`.
|
|
* @param {number} [argCount] The number of arguments to provide to `func`.
|
|
* @returns {Function} Returns the callback.
|
|
*/
|
|
function bindCallback(func, thisArg, argCount) {
|
|
if (typeof func != 'function') {
|
|
return identity;
|
|
}
|
|
if (typeof thisArg == 'undefined') {
|
|
return func;
|
|
}
|
|
switch (argCount) {
|
|
case 1: return function(value) {
|
|
return func.call(thisArg, value);
|
|
};
|
|
case 3: return function(value, index, collection) {
|
|
return func.call(thisArg, value, index, collection);
|
|
};
|
|
case 4: return function(accumulator, value, index, collection) {
|
|
return func.call(thisArg, accumulator, value, index, collection);
|
|
};
|
|
case 5: return function(value, other, key, object, source) {
|
|
return func.call(thisArg, value, other, key, object, source);
|
|
};
|
|
}
|
|
return function() {
|
|
return func.apply(thisArg, arguments);
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a clone of the given array buffer.
|
|
*
|
|
* @private
|
|
* @param {ArrayBuffer} buffer The array buffer to clone.
|
|
* @returns {ArrayBuffer} Returns the cloned array buffer.
|
|
*/
|
|
function bufferClone(buffer) {
|
|
return bufferSlice.call(buffer, 0);
|
|
}
|
|
if (!bufferSlice) {
|
|
// PhantomJS has `ArrayBuffer` and `Uint8Array` but not `Float64Array`.
|
|
bufferClone = !(ArrayBuffer && Uint8Array) ? constant(null) : function(buffer) {
|
|
var byteLength = buffer.byteLength,
|
|
floatLength = Float64Array ? floor(byteLength / FLOAT64_BYTES_PER_ELEMENT) : 0,
|
|
offset = floatLength * FLOAT64_BYTES_PER_ELEMENT,
|
|
result = new ArrayBuffer(byteLength);
|
|
|
|
if (floatLength) {
|
|
var view = new Float64Array(result, 0, floatLength);
|
|
view.set(new Float64Array(buffer, 0, floatLength));
|
|
}
|
|
if (byteLength != offset) {
|
|
view = new Uint8Array(result, offset);
|
|
view.set(new Uint8Array(buffer, offset));
|
|
}
|
|
return result;
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates an array that is the composition of partially applied arguments,
|
|
* placeholders, and provided arguments into a single array of arguments.
|
|
*
|
|
* @private
|
|
* @param {Array|Object} args The provided arguments.
|
|
* @param {Array} partials The arguments to prepend to those provided.
|
|
* @param {Array} holders The `partials` placeholder indexes.
|
|
* @returns {Array} Returns the new array of composed arguments.
|
|
*/
|
|
function composeArgs(args, partials, holders) {
|
|
var holdersLength = holders.length,
|
|
argsIndex = -1,
|
|
argsLength = nativeMax(args.length - holdersLength, 0),
|
|
leftIndex = -1,
|
|
leftLength = partials.length,
|
|
result = Array(argsLength + leftLength);
|
|
|
|
while (++leftIndex < leftLength) {
|
|
result[leftIndex] = partials[leftIndex];
|
|
}
|
|
while (++argsIndex < holdersLength) {
|
|
result[holders[argsIndex]] = args[argsIndex];
|
|
}
|
|
while (argsLength--) {
|
|
result[leftIndex++] = args[argsIndex++];
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* This function is like `composeArgs` except that the arguments composition
|
|
* is tailored for `_.partialRight`.
|
|
*
|
|
* @private
|
|
* @param {Array|Object} args The provided arguments.
|
|
* @param {Array} partials The arguments to append to those provided.
|
|
* @param {Array} holders The `partials` placeholder indexes.
|
|
* @returns {Array} Returns the new array of composed arguments.
|
|
*/
|
|
function composeArgsRight(args, partials, holders) {
|
|
var holdersIndex = -1,
|
|
holdersLength = holders.length,
|
|
argsIndex = -1,
|
|
argsLength = nativeMax(args.length - holdersLength, 0),
|
|
rightIndex = -1,
|
|
rightLength = partials.length,
|
|
result = Array(argsLength + rightLength);
|
|
|
|
while (++argsIndex < argsLength) {
|
|
result[argsIndex] = args[argsIndex];
|
|
}
|
|
var pad = argsIndex;
|
|
while (++rightIndex < rightLength) {
|
|
result[pad + rightIndex] = partials[rightIndex];
|
|
}
|
|
while (++holdersIndex < holdersLength) {
|
|
result[pad + holders[holdersIndex]] = args[argsIndex++];
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Creates a function that aggregates a collection, creating an accumulator
|
|
* object composed from the results of running each element in the collection
|
|
* through an iteratee.
|
|
*
|
|
* **Note:** This function is used to create `_.countBy`, `_.groupBy`, `_.indexBy`,
|
|
* and `_.partition`.
|
|
*
|
|
* @private
|
|
* @param {Function} setter The function to set keys and values of the accumulator object.
|
|
* @param {Function} [initializer] The function to initialize the accumulator object.
|
|
* @returns {Function} Returns the new aggregator function.
|
|
*/
|
|
function createAggregator(setter, initializer) {
|
|
return function(collection, iteratee, thisArg) {
|
|
var result = initializer ? initializer() : {};
|
|
iteratee = getCallback(iteratee, thisArg, 3);
|
|
|
|
if (isArray(collection)) {
|
|
var index = -1,
|
|
length = collection.length;
|
|
|
|
while (++index < length) {
|
|
var value = collection[index];
|
|
setter(result, value, iteratee(value, index, collection), collection);
|
|
}
|
|
} else {
|
|
baseEach(collection, function(value, key, collection) {
|
|
setter(result, value, iteratee(value, key, collection), collection);
|
|
});
|
|
}
|
|
return result;
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a function that assigns properties of source object(s) to a given
|
|
* destination object.
|
|
*
|
|
* **Note:** This function is used to create `_.assign`, `_.defaults`, and `_.merge`.
|
|
*
|
|
* @private
|
|
* @param {Function} assigner The function to assign values.
|
|
* @returns {Function} Returns the new assigner function.
|
|
*/
|
|
function createAssigner(assigner) {
|
|
return function() {
|
|
var args = arguments,
|
|
length = args.length,
|
|
object = args[0];
|
|
|
|
if (length < 2 || object == null) {
|
|
return object;
|
|
}
|
|
var customizer = args[length - 2],
|
|
thisArg = args[length - 1],
|
|
guard = args[3];
|
|
|
|
if (length > 3 && typeof customizer == 'function') {
|
|
customizer = bindCallback(customizer, thisArg, 5);
|
|
length -= 2;
|
|
} else {
|
|
customizer = (length > 2 && typeof thisArg == 'function') ? thisArg : null;
|
|
length -= (customizer ? 1 : 0);
|
|
}
|
|
if (guard && isIterateeCall(args[1], args[2], guard)) {
|
|
customizer = length == 3 ? null : customizer;
|
|
length = 2;
|
|
}
|
|
var index = 0;
|
|
while (++index < length) {
|
|
var source = args[index];
|
|
if (source) {
|
|
assigner(object, source, customizer);
|
|
}
|
|
}
|
|
return object;
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a `baseEach` or `baseEachRight` function.
|
|
*
|
|
* @private
|
|
* @param {Function} eachFunc The function to iterate over a collection.
|
|
* @param {boolean} [fromRight] Specify iterating from right to left.
|
|
* @returns {Function} Returns the new base function.
|
|
*/
|
|
function createBaseEach(eachFunc, fromRight) {
|
|
return function(collection, iteratee) {
|
|
var length = collection ? collection.length : 0;
|
|
if (!isLength(length)) {
|
|
return eachFunc(collection, iteratee);
|
|
}
|
|
var index = fromRight ? length : -1,
|
|
iterable = toObject(collection);
|
|
|
|
while ((fromRight ? index-- : ++index < length)) {
|
|
if (iteratee(iterable[index], index, iterable) === false) {
|
|
break;
|
|
}
|
|
}
|
|
return collection;
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a base function for `_.forIn` or `_.forInRight`.
|
|
*
|
|
* @private
|
|
* @param {boolean} [fromRight] Specify iterating from right to left.
|
|
* @returns {Function} Returns the new base function.
|
|
*/
|
|
function createBaseFor(fromRight) {
|
|
return function(object, iteratee, keysFunc) {
|
|
var iterable = toObject(object),
|
|
props = keysFunc(object),
|
|
length = props.length,
|
|
index = fromRight ? length : -1;
|
|
|
|
while ((fromRight ? index-- : ++index < length)) {
|
|
var key = props[index];
|
|
if (iteratee(iterable[key], key, iterable) === false) {
|
|
break;
|
|
}
|
|
}
|
|
return object;
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a function that wraps `func` and invokes it with the `this`
|
|
* binding of `thisArg`.
|
|
*
|
|
* @private
|
|
* @param {Function} func The function to bind.
|
|
* @param {*} [thisArg] The `this` binding of `func`.
|
|
* @returns {Function} Returns the new bound function.
|
|
*/
|
|
function createBindWrapper(func, thisArg) {
|
|
var Ctor = createCtorWrapper(func);
|
|
|
|
function wrapper() {
|
|
var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
|
|
return fn.apply(thisArg, arguments);
|
|
}
|
|
return wrapper;
|
|
}
|
|
|
|
/**
|
|
* Creates a `Set` cache object to optimize linear searches of large arrays.
|
|
*
|
|
* @private
|
|
* @param {Array} [values] The values to cache.
|
|
* @returns {null|Object} Returns the new cache object if `Set` is supported, else `null`.
|
|
*/
|
|
var createCache = !(nativeCreate && Set) ? constant(null) : function(values) {
|
|
return new SetCache(values);
|
|
};
|
|
|
|
/**
|
|
* Creates a function that produces compound words out of the words in a
|
|
* given string.
|
|
*
|
|
* @private
|
|
* @param {Function} callback The function to combine each word.
|
|
* @returns {Function} Returns the new compounder function.
|
|
*/
|
|
function createCompounder(callback) {
|
|
return function(string) {
|
|
var index = -1,
|
|
array = words(deburr(string)),
|
|
length = array.length,
|
|
result = '';
|
|
|
|
while (++index < length) {
|
|
result = callback(result, array[index], index);
|
|
}
|
|
return result;
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a function that produces an instance of `Ctor` regardless of
|
|
* whether it was invoked as part of a `new` expression or by `call` or `apply`.
|
|
*
|
|
* @private
|
|
* @param {Function} Ctor The constructor to wrap.
|
|
* @returns {Function} Returns the new wrapped function.
|
|
*/
|
|
function createCtorWrapper(Ctor) {
|
|
return function() {
|
|
var thisBinding = baseCreate(Ctor.prototype),
|
|
result = Ctor.apply(thisBinding, arguments);
|
|
|
|
// Mimic the constructor's `return` behavior.
|
|
// See https://es5.github.io/#x13.2.2 for more details.
|
|
return isObject(result) ? result : thisBinding;
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a `_.curry` or `_.curryRight` function.
|
|
*
|
|
* @private
|
|
* @param {boolean} flag The curry bit flag.
|
|
* @returns {Function} Returns the new curry function.
|
|
*/
|
|
function createCurry(flag) {
|
|
function curryFunc(func, arity, guard) {
|
|
if (guard && isIterateeCall(func, arity, guard)) {
|
|
arity = null;
|
|
}
|
|
var result = createWrapper(func, flag, null, null, null, null, null, arity);
|
|
result.placeholder = curryFunc.placeholder;
|
|
return result;
|
|
}
|
|
return curryFunc;
|
|
}
|
|
|
|
/**
|
|
* Creates a `_.max` or `_.min` function.
|
|
*
|
|
* @private
|
|
* @param {Function} arrayFunc The function to get the extremum value from an array.
|
|
* @param {boolean} [isMin] Specify returning the minimum, instead of the maximum,
|
|
* extremum value.
|
|
* @returns {Function} Returns the new extremum function.
|
|
*/
|
|
function createExtremum(arrayFunc, isMin) {
|
|
return function(collection, iteratee, thisArg) {
|
|
if (thisArg && isIterateeCall(collection, iteratee, thisArg)) {
|
|
iteratee = null;
|
|
}
|
|
var func = getCallback(),
|
|
noIteratee = iteratee == null;
|
|
|
|
if (!(func === baseCallback && noIteratee)) {
|
|
noIteratee = false;
|
|
iteratee = func(iteratee, thisArg, 3);
|
|
}
|
|
if (noIteratee) {
|
|
var isArr = isArray(collection);
|
|
if (!isArr && isString(collection)) {
|
|
iteratee = charAtCallback;
|
|
} else {
|
|
return arrayFunc(isArr ? collection : toIterable(collection));
|
|
}
|
|
}
|
|
return extremumBy(collection, iteratee, isMin);
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a `_.find` or `_.findLast` function.
|
|
*
|
|
* @private
|
|
* @param {Function} eachFunc The function to iterate over a collection.
|
|
* @param {boolean} [fromRight] Specify iterating from right to left.
|
|
* @returns {Function} Returns the new find function.
|
|
*/
|
|
function createFind(eachFunc, fromRight) {
|
|
return function(collection, predicate, thisArg) {
|
|
predicate = getCallback(predicate, thisArg, 3);
|
|
if (isArray(collection)) {
|
|
var index = baseFindIndex(collection, predicate, fromRight);
|
|
return index > -1 ? collection[index] : undefined;
|
|
}
|
|
return baseFind(collection, predicate, eachFunc);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Creates a `_.findIndex` or `_.findLastIndex` function.
|
|
*
|
|
* @private
|
|
* @param {boolean} [fromRight] Specify iterating from right to left.
|
|
* @returns {Function} Returns the new find function.
|
|
*/
|
|
function createFindIndex(fromRight) {
|
|
return function(array, predicate, thisArg) {
|
|
if (!(array && array.length)) {
|
|
return -1;
|
|
}
|
|
predicate = getCallback(predicate, thisArg, 3);
|
|
return baseFindIndex(array, predicate, fromRight);
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a `_.findKey` or `_.findLastKey` function.
|
|
*
|
|
* @private
|
|
* @param {Function} objectFunc The function to iterate over an object.
|
|
* @returns {Function} Returns the new find function.
|
|
*/
|
|
function createFindKey(objectFunc) {
|
|
return function(object, predicate, thisArg) {
|
|
predicate = getCallback(predicate, thisArg, 3);
|
|
return baseFind(object, predicate, objectFunc, true);
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a `_.flow` or `_.flowRight` function.
|
|
*
|
|
* @private
|
|
* @param {boolean} [fromRight] Specify iterating from right to left.
|
|
* @returns {Function} Returns the new flow function.
|
|
*/
|
|
function createFlow(fromRight) {
|
|
return function() {
|
|
var length = arguments.length;
|
|
if (!length) {
|
|
return function() { return arguments[0]; };
|
|
}
|
|
var wrapper,
|
|
index = fromRight ? length : -1,
|
|
leftIndex = 0,
|
|
funcs = Array(length);
|
|
|
|
while ((fromRight ? index-- : ++index < length)) {
|
|
var func = funcs[leftIndex++] = arguments[index];
|
|
if (typeof func != 'function') {
|
|
throw new TypeError(FUNC_ERROR_TEXT);
|
|
}
|
|
var funcName = wrapper ? '' : getFuncName(func);
|
|
wrapper = funcName == 'wrapper' ? new LodashWrapper([]) : wrapper;
|
|
}
|
|
index = wrapper ? -1 : length;
|
|
while (++index < length) {
|
|
func = funcs[index];
|
|
funcName = getFuncName(func);
|
|
|
|
var data = funcName == 'wrapper' ? getData(func) : null;
|
|
if (data && isLaziable(data[0])) {
|
|
wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);
|
|
} else {
|
|
wrapper = (func.length == 1 && isLaziable(func)) ? wrapper[funcName]() : wrapper.thru(func);
|
|
}
|
|
}
|
|
return function() {
|
|
var args = arguments;
|
|
if (wrapper && args.length == 1 && isArray(args[0])) {
|
|
return wrapper.plant(args[0]).value();
|
|
}
|
|
var index = 0,
|
|
result = funcs[index].apply(this, args);
|
|
|
|
while (++index < length) {
|
|
result = funcs[index].call(this, result);
|
|
}
|
|
return result;
|
|
};
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a function for `_.forEach` or `_.forEachRight`.
|
|
*
|
|
* @private
|
|
* @param {Function} arrayFunc The function to iterate over an array.
|
|
* @param {Function} eachFunc The function to iterate over a collection.
|
|
* @returns {Function} Returns the new each function.
|
|
*/
|
|
function createForEach(arrayFunc, eachFunc) {
|
|
return function(collection, iteratee, thisArg) {
|
|
return (typeof iteratee == 'function' && typeof thisArg == 'undefined' && isArray(collection))
|
|
? arrayFunc(collection, iteratee)
|
|
: eachFunc(collection, bindCallback(iteratee, thisArg, 3));
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a function for `_.forIn` or `_.forInRight`.
|
|
*
|
|
* @private
|
|
* @param {Function} objectFunc The function to iterate over an object.
|
|
* @returns {Function} Returns the new each function.
|
|
*/
|
|
function createForIn(objectFunc) {
|
|
return function(object, iteratee, thisArg) {
|
|
if (typeof iteratee != 'function' || typeof thisArg != 'undefined') {
|
|
iteratee = bindCallback(iteratee, thisArg, 3);
|
|
}
|
|
return objectFunc(object, iteratee, keysIn);
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a function for `_.forOwn` or `_.forOwnRight`.
|
|
*
|
|
* @private
|
|
* @param {Function} objectFunc The function to iterate over an object.
|
|
* @returns {Function} Returns the new each function.
|
|
*/
|
|
function createForOwn(objectFunc) {
|
|
return function(object, iteratee, thisArg) {
|
|
if (typeof iteratee != 'function' || typeof thisArg != 'undefined') {
|
|
iteratee = bindCallback(iteratee, thisArg, 3);
|
|
}
|
|
return objectFunc(object, iteratee);
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a function for `_.padLeft` or `_.padRight`.
|
|
*
|
|
* @private
|
|
* @param {boolean} [fromRight] Specify padding from the right.
|
|
* @returns {Function} Returns the new pad function.
|
|
*/
|
|
function createPadDir(fromRight) {
|
|
return function(string, length, chars) {
|
|
string = baseToString(string);
|
|
return string && ((fromRight ? string : '') + createPadding(string, length, chars) + (fromRight ? '' : string));
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a `_.partial` or `_.partialRight` function.
|
|
*
|
|
* @private
|
|
* @param {boolean} flag The partial bit flag.
|
|
* @returns {Function} Returns the new partial function.
|
|
*/
|
|
function createPartial(flag) {
|
|
var partialFunc = restParam(function(func, partials) {
|
|
var holders = replaceHolders(partials, partialFunc.placeholder);
|
|
return createWrapper(func, flag, null, partials, holders);
|
|
});
|
|
return partialFunc;
|
|
}
|
|
|
|
/**
|
|
* Creates a function for `_.reduce` or `_.reduceRight`.
|
|
*
|
|
* @private
|
|
* @param {Function} arrayFunc The function to iterate over an array.
|
|
* @param {Function} eachFunc The function to iterate over a collection.
|
|
* @returns {Function} Returns the new each function.
|
|
*/
|
|
function createReduce(arrayFunc, eachFunc) {
|
|
return function(collection, iteratee, accumulator, thisArg) {
|
|
var initFromArray = arguments.length < 3;
|
|
return (typeof iteratee == 'function' && typeof thisArg == 'undefined' && isArray(collection))
|
|
? arrayFunc(collection, iteratee, accumulator, initFromArray)
|
|
: baseReduce(collection, getCallback(iteratee, thisArg, 4), accumulator, initFromArray, eachFunc);
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a function that wraps `func` and invokes it with optional `this`
|
|
* binding of, partial application, and currying.
|
|
*
|
|
* @private
|
|
* @param {Function|string} func The function or method name to reference.
|
|
* @param {number} bitmask The bitmask of flags. See `createWrapper` for more details.
|
|
* @param {*} [thisArg] The `this` binding of `func`.
|
|
* @param {Array} [partials] The arguments to prepend to those provided to the new function.
|
|
* @param {Array} [holders] The `partials` placeholder indexes.
|
|
* @param {Array} [partialsRight] The arguments to append to those provided to the new function.
|
|
* @param {Array} [holdersRight] The `partialsRight` placeholder indexes.
|
|
* @param {Array} [argPos] The argument positions of the new function.
|
|
* @param {number} [ary] The arity cap of `func`.
|
|
* @param {number} [arity] The arity of `func`.
|
|
* @returns {Function} Returns the new wrapped function.
|
|
*/
|
|
function createHybridWrapper(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {
|
|
var isAry = bitmask & ARY_FLAG,
|
|
isBind = bitmask & BIND_FLAG,
|
|
isBindKey = bitmask & BIND_KEY_FLAG,
|
|
isCurry = bitmask & CURRY_FLAG,
|
|
isCurryBound = bitmask & CURRY_BOUND_FLAG,
|
|
isCurryRight = bitmask & CURRY_RIGHT_FLAG;
|
|
|
|
var Ctor = !isBindKey && createCtorWrapper(func),
|
|
key = func;
|
|
|
|
function wrapper() {
|
|
// Avoid `arguments` object use disqualifying optimizations by
|
|
// converting it to an array before providing it to other functions.
|
|
var length = arguments.length,
|
|
index = length,
|
|
args = Array(length);
|
|
|
|
while (index--) {
|
|
args[index] = arguments[index];
|
|
}
|
|
if (partials) {
|
|
args = composeArgs(args, partials, holders);
|
|
}
|
|
if (partialsRight) {
|
|
args = composeArgsRight(args, partialsRight, holdersRight);
|
|
}
|
|
if (isCurry || isCurryRight) {
|
|
var placeholder = wrapper.placeholder,
|
|
argsHolders = replaceHolders(args, placeholder);
|
|
|
|
length -= argsHolders.length;
|
|
if (length < arity) {
|
|
var newArgPos = argPos ? arrayCopy(argPos) : null,
|
|
newArity = nativeMax(arity - length, 0),
|
|
newsHolders = isCurry ? argsHolders : null,
|
|
newHoldersRight = isCurry ? null : argsHolders,
|
|
newPartials = isCurry ? args : null,
|
|
newPartialsRight = isCurry ? null : args;
|
|
|
|
bitmask |= (isCurry ? PARTIAL_FLAG : PARTIAL_RIGHT_FLAG);
|
|
bitmask &= ~(isCurry ? PARTIAL_RIGHT_FLAG : PARTIAL_FLAG);
|
|
|
|
if (!isCurryBound) {
|
|
bitmask &= ~(BIND_FLAG | BIND_KEY_FLAG);
|
|
}
|
|
var newData = [func, bitmask, thisArg, newPartials, newsHolders, newPartialsRight, newHoldersRight, newArgPos, ary, newArity],
|
|
result = createHybridWrapper.apply(undefined, newData);
|
|
|
|
if (isLaziable(func)) {
|
|
setData(result, newData);
|
|
}
|
|
result.placeholder = placeholder;
|
|
return result;
|
|
}
|
|
}
|
|
var thisBinding = isBind ? thisArg : this;
|
|
if (isBindKey) {
|
|
func = thisBinding[key];
|
|
}
|
|
if (argPos) {
|
|
args = reorder(args, argPos);
|
|
}
|
|
if (isAry && ary < args.length) {
|
|
args.length = ary;
|
|
}
|
|
var fn = (this && this !== root && this instanceof wrapper) ? (Ctor || createCtorWrapper(func)) : func;
|
|
return fn.apply(thisBinding, args);
|
|
}
|
|
return wrapper;
|
|
}
|
|
|
|
/**
|
|
* Creates the padding required for `string` based on the given `length`.
|
|
* The `chars` string is truncated if the number of characters exceeds `length`.
|
|
*
|
|
* @private
|
|
* @param {string} string The string to create padding for.
|
|
* @param {number} [length=0] The padding length.
|
|
* @param {string} [chars=' '] The string used as padding.
|
|
* @returns {string} Returns the pad for `string`.
|
|
*/
|
|
function createPadding(string, length, chars) {
|
|
var strLength = string.length;
|
|
length = +length;
|
|
|
|
if (strLength >= length || !nativeIsFinite(length)) {
|
|
return '';
|
|
}
|
|
var padLength = length - strLength;
|
|
chars = chars == null ? ' ' : (chars + '');
|
|
return repeat(chars, ceil(padLength / chars.length)).slice(0, padLength);
|
|
}
|
|
|
|
/**
|
|
* Creates a function that wraps `func` and invokes it with the optional `this`
|
|
* binding of `thisArg` and the `partials` prepended to those provided to
|
|
* the wrapper.
|
|
*
|
|
* @private
|
|
* @param {Function} func The function to partially apply arguments to.
|
|
* @param {number} bitmask The bitmask of flags. See `createWrapper` for more details.
|
|
* @param {*} thisArg The `this` binding of `func`.
|
|
* @param {Array} partials The arguments to prepend to those provided to the new function.
|
|
* @returns {Function} Returns the new bound function.
|
|
*/
|
|
function createPartialWrapper(func, bitmask, thisArg, partials) {
|
|
var isBind = bitmask & BIND_FLAG,
|
|
Ctor = createCtorWrapper(func);
|
|
|
|
function wrapper() {
|
|
// Avoid `arguments` object use disqualifying optimizations by
|
|
// converting it to an array before providing it `func`.
|
|
var argsIndex = -1,
|
|
argsLength = arguments.length,
|
|
leftIndex = -1,
|
|
leftLength = partials.length,
|
|
args = Array(argsLength + leftLength);
|
|
|
|
while (++leftIndex < leftLength) {
|
|
args[leftIndex] = partials[leftIndex];
|
|
}
|
|
while (argsLength--) {
|
|
args[leftIndex++] = arguments[++argsIndex];
|
|
}
|
|
var fn = (this && this !== root && this instanceof wrapper) ? Ctor : func;
|
|
return fn.apply(isBind ? thisArg : this, args);
|
|
}
|
|
return wrapper;
|
|
}
|
|
|
|
/**
|
|
* Creates a `_.sortedIndex` or `_.sortedLastIndex` function.
|
|
*
|
|
* @private
|
|
* @param {boolean} [retHighest] Specify returning the highest qualified index.
|
|
* @returns {Function} Returns the new index function.
|
|
*/
|
|
function createSortedIndex(retHighest) {
|
|
return function(array, value, iteratee, thisArg) {
|
|
var func = getCallback(iteratee);
|
|
return (func === baseCallback && iteratee == null)
|
|
? binaryIndex(array, value, retHighest)
|
|
: binaryIndexBy(array, value, func(iteratee, thisArg, 1), retHighest);
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a function that either curries or invokes `func` with optional
|
|
* `this` binding and partially applied arguments.
|
|
*
|
|
* @private
|
|
* @param {Function|string} func The function or method name to reference.
|
|
* @param {number} bitmask The bitmask of flags.
|
|
* The bitmask may be composed of the following flags:
|
|
* 1 - `_.bind`
|
|
* 2 - `_.bindKey`
|
|
* 4 - `_.curry` or `_.curryRight` of a bound function
|
|
* 8 - `_.curry`
|
|
* 16 - `_.curryRight`
|
|
* 32 - `_.partial`
|
|
* 64 - `_.partialRight`
|
|
* 128 - `_.rearg`
|
|
* 256 - `_.ary`
|
|
* @param {*} [thisArg] The `this` binding of `func`.
|
|
* @param {Array} [partials] The arguments to be partially applied.
|
|
* @param {Array} [holders] The `partials` placeholder indexes.
|
|
* @param {Array} [argPos] The argument positions of the new function.
|
|
* @param {number} [ary] The arity cap of `func`.
|
|
* @param {number} [arity] The arity of `func`.
|
|
* @returns {Function} Returns the new wrapped function.
|
|
*/
|
|
function createWrapper(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {
|
|
var isBindKey = bitmask & BIND_KEY_FLAG;
|
|
if (!isBindKey && typeof func != 'function') {
|
|
throw new TypeError(FUNC_ERROR_TEXT);
|
|
}
|
|
var length = partials ? partials.length : 0;
|
|
if (!length) {
|
|
bitmask &= ~(PARTIAL_FLAG | PARTIAL_RIGHT_FLAG);
|
|
partials = holders = null;
|
|
}
|
|
length -= (holders ? holders.length : 0);
|
|
if (bitmask & PARTIAL_RIGHT_FLAG) {
|
|
var partialsRight = partials,
|
|
holdersRight = holders;
|
|
|
|
partials = holders = null;
|
|
}
|
|
var data = isBindKey ? null : getData(func),
|
|
newData = [func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity];
|
|
|
|
if (data) {
|
|
mergeData(newData, data);
|
|
bitmask = newData[1];
|
|
arity = newData[9];
|
|
}
|
|
newData[9] = arity == null
|
|
? (isBindKey ? 0 : func.length)
|
|
: (nativeMax(arity - length, 0) || 0);
|
|
|
|
if (bitmask == BIND_FLAG) {
|
|
var result = createBindWrapper(newData[0], newData[2]);
|
|
} else if ((bitmask == PARTIAL_FLAG || bitmask == (BIND_FLAG | PARTIAL_FLAG)) && !newData[4].length) {
|
|
result = createPartialWrapper.apply(undefined, newData);
|
|
} else {
|
|
result = createHybridWrapper.apply(undefined, newData);
|
|
}
|
|
var setter = data ? baseSetData : setData;
|
|
return setter(result, newData);
|
|
}
|
|
|
|
/**
|
|
* A specialized version of `baseIsEqualDeep` for arrays with support for
|
|
* partial deep comparisons.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to compare.
|
|
* @param {Array} other The other array to compare.
|
|
* @param {Function} equalFunc The function to determine equivalents of values.
|
|
* @param {Function} [customizer] The function to customize comparing arrays.
|
|
* @param {boolean} [isLoose] Specify performing partial comparisons.
|
|
* @param {Array} [stackA] Tracks traversed `value` objects.
|
|
* @param {Array} [stackB] Tracks traversed `other` objects.
|
|
* @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.
|
|
*/
|
|
function equalArrays(array, other, equalFunc, customizer, isLoose, stackA, stackB) {
|
|
var index = -1,
|
|
arrLength = array.length,
|
|
othLength = other.length,
|
|
result = true;
|
|
|
|
if (arrLength != othLength && !(isLoose && othLength > arrLength)) {
|
|
return false;
|
|
}
|
|
// Deep compare the contents, ignoring non-numeric properties.
|
|
while (result && ++index < arrLength) {
|
|
var arrValue = array[index],
|
|
othValue = other[index];
|
|
|
|
result = undefined;
|
|
if (customizer) {
|
|
result = isLoose
|
|
? customizer(othValue, arrValue, index)
|
|
: customizer(arrValue, othValue, index);
|
|
}
|
|
if (typeof result == 'undefined') {
|
|
// Recursively compare arrays (susceptible to call stack limits).
|
|
if (isLoose) {
|
|
var othIndex = othLength;
|
|
while (othIndex--) {
|
|
othValue = other[othIndex];
|
|
result = (arrValue && arrValue === othValue) || equalFunc(arrValue, othValue, customizer, isLoose, stackA, stackB);
|
|
if (result) {
|
|
break;
|
|
}
|
|
}
|
|
} else {
|
|
result = (arrValue && arrValue === othValue) || equalFunc(arrValue, othValue, customizer, isLoose, stackA, stackB);
|
|
}
|
|
}
|
|
}
|
|
return !!result;
|
|
}
|
|
|
|
/**
|
|
* A specialized version of `baseIsEqualDeep` for comparing objects of
|
|
* the same `toStringTag`.
|
|
*
|
|
* **Note:** This function only supports comparing values with tags of
|
|
* `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
|
|
*
|
|
* @private
|
|
* @param {Object} value The object to compare.
|
|
* @param {Object} other The other object to compare.
|
|
* @param {string} tag The `toStringTag` of the objects to compare.
|
|
* @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
|
|
*/
|
|
function equalByTag(object, other, tag) {
|
|
switch (tag) {
|
|
case boolTag:
|
|
case dateTag:
|
|
// Coerce dates and booleans to numbers, dates to milliseconds and booleans
|
|
// to `1` or `0` treating invalid dates coerced to `NaN` as not equal.
|
|
return +object == +other;
|
|
|
|
case errorTag:
|
|
return object.name == other.name && object.message == other.message;
|
|
|
|
case numberTag:
|
|
// Treat `NaN` vs. `NaN` as equal.
|
|
return (object != +object)
|
|
? other != +other
|
|
// But, treat `-0` vs. `+0` as not equal.
|
|
: (object == 0 ? ((1 / object) == (1 / other)) : object == +other);
|
|
|
|
case regexpTag:
|
|
case stringTag:
|
|
// Coerce regexes to strings and treat strings primitives and string
|
|
// objects as equal. See https://es5.github.io/#x15.10.6.4 for more details.
|
|
return object == (other + '');
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* A specialized version of `baseIsEqualDeep` for objects with support for
|
|
* partial deep comparisons.
|
|
*
|
|
* @private
|
|
* @param {Object} object The object to compare.
|
|
* @param {Object} other The other object to compare.
|
|
* @param {Function} equalFunc The function to determine equivalents of values.
|
|
* @param {Function} [customizer] The function to customize comparing values.
|
|
* @param {boolean} [isLoose] Specify performing partial comparisons.
|
|
* @param {Array} [stackA] Tracks traversed `value` objects.
|
|
* @param {Array} [stackB] Tracks traversed `other` objects.
|
|
* @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
|
|
*/
|
|
function equalObjects(object, other, equalFunc, customizer, isLoose, stackA, stackB) {
|
|
var objProps = keys(object),
|
|
objLength = objProps.length,
|
|
othProps = keys(other),
|
|
othLength = othProps.length;
|
|
|
|
if (objLength != othLength && !isLoose) {
|
|
return false;
|
|
}
|
|
var skipCtor = isLoose,
|
|
index = -1;
|
|
|
|
while (++index < objLength) {
|
|
var key = objProps[index],
|
|
result = isLoose ? key in other : hasOwnProperty.call(other, key);
|
|
|
|
if (result) {
|
|
var objValue = object[key],
|
|
othValue = other[key];
|
|
|
|
result = undefined;
|
|
if (customizer) {
|
|
result = isLoose
|
|
? customizer(othValue, objValue, key)
|
|
: customizer(objValue, othValue, key);
|
|
}
|
|
if (typeof result == 'undefined') {
|
|
// Recursively compare objects (susceptible to call stack limits).
|
|
result = (objValue && objValue === othValue) || equalFunc(objValue, othValue, customizer, isLoose, stackA, stackB);
|
|
}
|
|
}
|
|
if (!result) {
|
|
return false;
|
|
}
|
|
skipCtor || (skipCtor = key == 'constructor');
|
|
}
|
|
if (!skipCtor) {
|
|
var objCtor = object.constructor,
|
|
othCtor = other.constructor;
|
|
|
|
// Non `Object` object instances with different constructors are not equal.
|
|
if (objCtor != othCtor &&
|
|
('constructor' in object && 'constructor' in other) &&
|
|
!(typeof objCtor == 'function' && objCtor instanceof objCtor &&
|
|
typeof othCtor == 'function' && othCtor instanceof othCtor)) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Gets the extremum value of `collection` invoking `iteratee` for each value
|
|
* in `collection` to generate the criterion by which the value is ranked.
|
|
* The `iteratee` is invoked with three arguments: (value, index, collection).
|
|
*
|
|
* @private
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function} iteratee The function invoked per iteration.
|
|
* @param {boolean} [isMin] Specify returning the minimum, instead of the
|
|
* maximum, extremum value.
|
|
* @returns {*} Returns the extremum value.
|
|
*/
|
|
function extremumBy(collection, iteratee, isMin) {
|
|
var exValue = isMin ? POSITIVE_INFINITY : NEGATIVE_INFINITY,
|
|
computed = exValue,
|
|
result = computed;
|
|
|
|
baseEach(collection, function(value, index, collection) {
|
|
var current = iteratee(value, index, collection);
|
|
if ((isMin ? (current < computed) : (current > computed)) ||
|
|
(current === exValue && current === result)) {
|
|
computed = current;
|
|
result = value;
|
|
}
|
|
});
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Gets the appropriate "callback" function. If the `_.callback` method is
|
|
* customized this function returns the custom method, otherwise it returns
|
|
* the `baseCallback` function. If arguments are provided the chosen function
|
|
* is invoked with them and its result is returned.
|
|
*
|
|
* @private
|
|
* @returns {Function} Returns the chosen function or its result.
|
|
*/
|
|
function getCallback(func, thisArg, argCount) {
|
|
var result = lodash.callback || callback;
|
|
result = result === callback ? baseCallback : result;
|
|
return argCount ? result(func, thisArg, argCount) : result;
|
|
}
|
|
|
|
/**
|
|
* Gets metadata for `func`.
|
|
*
|
|
* @private
|
|
* @param {Function} func The function to query.
|
|
* @returns {*} Returns the metadata for `func`.
|
|
*/
|
|
var getData = !metaMap ? noop : function(func) {
|
|
return metaMap.get(func);
|
|
};
|
|
|
|
/**
|
|
* Gets the name of `func`.
|
|
*
|
|
* @private
|
|
* @param {Function} func The function to query.
|
|
* @returns {string} Returns the function name.
|
|
*/
|
|
var getFuncName = (function() {
|
|
if (!support.funcNames) {
|
|
return constant('');
|
|
}
|
|
if (constant.name == 'constant') {
|
|
return baseProperty('name');
|
|
}
|
|
return function(func) {
|
|
var result = func.name,
|
|
array = realNames[result],
|
|
length = array ? array.length : 0;
|
|
|
|
while (length--) {
|
|
var data = array[length],
|
|
otherFunc = data.func;
|
|
|
|
if (otherFunc == null || otherFunc == func) {
|
|
return data.name;
|
|
}
|
|
}
|
|
return result;
|
|
};
|
|
}());
|
|
|
|
/**
|
|
* Gets the appropriate "indexOf" function. If the `_.indexOf` method is
|
|
* customized this function returns the custom method, otherwise it returns
|
|
* the `baseIndexOf` function. If arguments are provided the chosen function
|
|
* is invoked with them and its result is returned.
|
|
*
|
|
* @private
|
|
* @returns {Function|number} Returns the chosen function or its result.
|
|
*/
|
|
function getIndexOf(collection, target, fromIndex) {
|
|
var result = lodash.indexOf || indexOf;
|
|
result = result === indexOf ? baseIndexOf : result;
|
|
return collection ? result(collection, target, fromIndex) : result;
|
|
}
|
|
|
|
/**
|
|
* Gets the view, applying any `transforms` to the `start` and `end` positions.
|
|
*
|
|
* @private
|
|
* @param {number} start The start of the view.
|
|
* @param {number} end The end of the view.
|
|
* @param {Array} [transforms] The transformations to apply to the view.
|
|
* @returns {Object} Returns an object containing the `start` and `end`
|
|
* positions of the view.
|
|
*/
|
|
function getView(start, end, transforms) {
|
|
var index = -1,
|
|
length = transforms ? transforms.length : 0;
|
|
|
|
while (++index < length) {
|
|
var data = transforms[index],
|
|
size = data.size;
|
|
|
|
switch (data.type) {
|
|
case 'drop': start += size; break;
|
|
case 'dropRight': end -= size; break;
|
|
case 'take': end = nativeMin(end, start + size); break;
|
|
case 'takeRight': start = nativeMax(start, end - size); break;
|
|
}
|
|
}
|
|
return { 'start': start, 'end': end };
|
|
}
|
|
|
|
/**
|
|
* Initializes an array clone.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to clone.
|
|
* @returns {Array} Returns the initialized clone.
|
|
*/
|
|
function initCloneArray(array) {
|
|
var length = array.length,
|
|
result = new array.constructor(length);
|
|
|
|
// Add array properties assigned by `RegExp#exec`.
|
|
if (length && typeof array[0] == 'string' && hasOwnProperty.call(array, 'index')) {
|
|
result.index = array.index;
|
|
result.input = array.input;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Initializes an object clone.
|
|
*
|
|
* @private
|
|
* @param {Object} object The object to clone.
|
|
* @returns {Object} Returns the initialized clone.
|
|
*/
|
|
function initCloneObject(object) {
|
|
var Ctor = object.constructor;
|
|
if (!(typeof Ctor == 'function' && Ctor instanceof Ctor)) {
|
|
Ctor = Object;
|
|
}
|
|
return new Ctor;
|
|
}
|
|
|
|
/**
|
|
* Initializes an object clone based on its `toStringTag`.
|
|
*
|
|
* **Note:** This function only supports cloning values with tags of
|
|
* `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
|
|
*
|
|
*
|
|
* @private
|
|
* @param {Object} object The object to clone.
|
|
* @param {string} tag The `toStringTag` of the object to clone.
|
|
* @param {boolean} [isDeep] Specify a deep clone.
|
|
* @returns {Object} Returns the initialized clone.
|
|
*/
|
|
function initCloneByTag(object, tag, isDeep) {
|
|
var Ctor = object.constructor;
|
|
switch (tag) {
|
|
case arrayBufferTag:
|
|
return bufferClone(object);
|
|
|
|
case boolTag:
|
|
case dateTag:
|
|
return new Ctor(+object);
|
|
|
|
case float32Tag: case float64Tag:
|
|
case int8Tag: case int16Tag: case int32Tag:
|
|
case uint8Tag: case uint8ClampedTag: case uint16Tag: case uint32Tag:
|
|
var buffer = object.buffer;
|
|
return new Ctor(isDeep ? bufferClone(buffer) : buffer, object.byteOffset, object.length);
|
|
|
|
case numberTag:
|
|
case stringTag:
|
|
return new Ctor(object);
|
|
|
|
case regexpTag:
|
|
var result = new Ctor(object.source, reFlags.exec(object));
|
|
result.lastIndex = object.lastIndex;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Checks if `value` is a valid array-like index.
|
|
*
|
|
* @private
|
|
* @param {*} value The value to check.
|
|
* @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
|
|
* @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
|
|
*/
|
|
function isIndex(value, length) {
|
|
value = +value;
|
|
length = length == null ? MAX_SAFE_INTEGER : length;
|
|
return value > -1 && value % 1 == 0 && value < length;
|
|
}
|
|
|
|
/**
|
|
* Checks if the provided arguments are from an iteratee call.
|
|
*
|
|
* @private
|
|
* @param {*} value The potential iteratee value argument.
|
|
* @param {*} index The potential iteratee index or key argument.
|
|
* @param {*} object The potential iteratee object argument.
|
|
* @returns {boolean} Returns `true` if the arguments are from an iteratee call, else `false`.
|
|
*/
|
|
function isIterateeCall(value, index, object) {
|
|
if (!isObject(object)) {
|
|
return false;
|
|
}
|
|
var type = typeof index;
|
|
if (type == 'number') {
|
|
var length = object.length,
|
|
prereq = isLength(length) && isIndex(index, length);
|
|
} else {
|
|
prereq = type == 'string' && index in object;
|
|
}
|
|
if (prereq) {
|
|
var other = object[index];
|
|
return value === value ? (value === other) : (other !== other);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* Checks if `func` has a lazy counterpart.
|
|
*
|
|
* @private
|
|
* @param {Function} func The function to check.
|
|
* @returns {boolean} Returns `true` if `func` has a lazy counterpart, else `false`.
|
|
*/
|
|
function isLaziable(func) {
|
|
var funcName = getFuncName(func);
|
|
return !!funcName && func === lodash[funcName] && funcName in LazyWrapper.prototype;
|
|
}
|
|
|
|
/**
|
|
* Checks if `value` is a valid array-like length.
|
|
*
|
|
* **Note:** This function is based on [`ToLength`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength).
|
|
*
|
|
* @private
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
|
|
*/
|
|
function isLength(value) {
|
|
return typeof value == 'number' && value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER;
|
|
}
|
|
|
|
/**
|
|
* Checks if `value` is suitable for strict equality comparisons, i.e. `===`.
|
|
*
|
|
* @private
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` if suitable for strict
|
|
* equality comparisons, else `false`.
|
|
*/
|
|
function isStrictComparable(value) {
|
|
return value === value && (value === 0 ? ((1 / value) > 0) : !isObject(value));
|
|
}
|
|
|
|
/**
|
|
* Merges the function metadata of `source` into `data`.
|
|
*
|
|
* Merging metadata reduces the number of wrappers required to invoke a function.
|
|
* This is possible because methods like `_.bind`, `_.curry`, and `_.partial`
|
|
* may be applied regardless of execution order. Methods like `_.ary` and `_.rearg`
|
|
* augment function arguments, making the order in which they are executed important,
|
|
* preventing the merging of metadata. However, we make an exception for a safe
|
|
* common case where curried functions have `_.ary` and or `_.rearg` applied.
|
|
*
|
|
* @private
|
|
* @param {Array} data The destination metadata.
|
|
* @param {Array} source The source metadata.
|
|
* @returns {Array} Returns `data`.
|
|
*/
|
|
function mergeData(data, source) {
|
|
var bitmask = data[1],
|
|
srcBitmask = source[1],
|
|
newBitmask = bitmask | srcBitmask,
|
|
isCommon = newBitmask < ARY_FLAG;
|
|
|
|
var isCombo =
|
|
(srcBitmask == ARY_FLAG && bitmask == CURRY_FLAG) ||
|
|
(srcBitmask == ARY_FLAG && bitmask == REARG_FLAG && data[7].length <= source[8]) ||
|
|
(srcBitmask == (ARY_FLAG | REARG_FLAG) && bitmask == CURRY_FLAG);
|
|
|
|
// Exit early if metadata can't be merged.
|
|
if (!(isCommon || isCombo)) {
|
|
return data;
|
|
}
|
|
// Use source `thisArg` if available.
|
|
if (srcBitmask & BIND_FLAG) {
|
|
data[2] = source[2];
|
|
// Set when currying a bound function.
|
|
newBitmask |= (bitmask & BIND_FLAG) ? 0 : CURRY_BOUND_FLAG;
|
|
}
|
|
// Compose partial arguments.
|
|
var value = source[3];
|
|
if (value) {
|
|
var partials = data[3];
|
|
data[3] = partials ? composeArgs(partials, value, source[4]) : arrayCopy(value);
|
|
data[4] = partials ? replaceHolders(data[3], PLACEHOLDER) : arrayCopy(source[4]);
|
|
}
|
|
// Compose partial right arguments.
|
|
value = source[5];
|
|
if (value) {
|
|
partials = data[5];
|
|
data[5] = partials ? composeArgsRight(partials, value, source[6]) : arrayCopy(value);
|
|
data[6] = partials ? replaceHolders(data[5], PLACEHOLDER) : arrayCopy(source[6]);
|
|
}
|
|
// Use source `argPos` if available.
|
|
value = source[7];
|
|
if (value) {
|
|
data[7] = arrayCopy(value);
|
|
}
|
|
// Use source `ary` if it's smaller.
|
|
if (srcBitmask & ARY_FLAG) {
|
|
data[8] = data[8] == null ? source[8] : nativeMin(data[8], source[8]);
|
|
}
|
|
// Use source `arity` if one is not provided.
|
|
if (data[9] == null) {
|
|
data[9] = source[9];
|
|
}
|
|
// Use source `func` and merge bitmasks.
|
|
data[0] = source[0];
|
|
data[1] = newBitmask;
|
|
|
|
return data;
|
|
}
|
|
|
|
/**
|
|
* A specialized version of `_.pick` that picks `object` properties specified
|
|
* by the `props` array.
|
|
*
|
|
* @private
|
|
* @param {Object} object The source object.
|
|
* @param {string[]} props The property names to pick.
|
|
* @returns {Object} Returns the new object.
|
|
*/
|
|
function pickByArray(object, props) {
|
|
object = toObject(object);
|
|
|
|
var index = -1,
|
|
length = props.length,
|
|
result = {};
|
|
|
|
while (++index < length) {
|
|
var key = props[index];
|
|
if (key in object) {
|
|
result[key] = object[key];
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* A specialized version of `_.pick` that picks `object` properties `predicate`
|
|
* returns truthy for.
|
|
*
|
|
* @private
|
|
* @param {Object} object The source object.
|
|
* @param {Function} predicate The function invoked per iteration.
|
|
* @returns {Object} Returns the new object.
|
|
*/
|
|
function pickByCallback(object, predicate) {
|
|
var result = {};
|
|
baseForIn(object, function(value, key, object) {
|
|
if (predicate(value, key, object)) {
|
|
result[key] = value;
|
|
}
|
|
});
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Reorder `array` according to the specified indexes where the element at
|
|
* the first index is assigned as the first element, the element at
|
|
* the second index is assigned as the second element, and so on.
|
|
*
|
|
* @private
|
|
* @param {Array} array The array to reorder.
|
|
* @param {Array} indexes The arranged array indexes.
|
|
* @returns {Array} Returns `array`.
|
|
*/
|
|
function reorder(array, indexes) {
|
|
var arrLength = array.length,
|
|
length = nativeMin(indexes.length, arrLength),
|
|
oldArray = arrayCopy(array);
|
|
|
|
while (length--) {
|
|
var index = indexes[length];
|
|
array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined;
|
|
}
|
|
return array;
|
|
}
|
|
|
|
/**
|
|
* Sets metadata for `func`.
|
|
*
|
|
* **Note:** If this function becomes hot, i.e. is invoked a lot in a short
|
|
* period of time, it will trip its breaker and transition to an identity function
|
|
* to avoid garbage collection pauses in V8. See [V8 issue 2070](https://code.google.com/p/v8/issues/detail?id=2070)
|
|
* for more details.
|
|
*
|
|
* @private
|
|
* @param {Function} func The function to associate metadata with.
|
|
* @param {*} data The metadata.
|
|
* @returns {Function} Returns `func`.
|
|
*/
|
|
var setData = (function() {
|
|
var count = 0,
|
|
lastCalled = 0;
|
|
|
|
return function(key, value) {
|
|
var stamp = now(),
|
|
remaining = HOT_SPAN - (stamp - lastCalled);
|
|
|
|
lastCalled = stamp;
|
|
if (remaining > 0) {
|
|
if (++count >= HOT_COUNT) {
|
|
return key;
|
|
}
|
|
} else {
|
|
count = 0;
|
|
}
|
|
return baseSetData(key, value);
|
|
};
|
|
}());
|
|
|
|
/**
|
|
* A fallback implementation of `_.isPlainObject` which checks if `value`
|
|
* is an object created by the `Object` constructor or has a `[[Prototype]]`
|
|
* of `null`.
|
|
*
|
|
* @private
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
|
|
*/
|
|
function shimIsPlainObject(value) {
|
|
var Ctor,
|
|
support = lodash.support;
|
|
|
|
// Exit early for non `Object` objects.
|
|
if (!(isObjectLike(value) && objToString.call(value) == objectTag) ||
|
|
(!hasOwnProperty.call(value, 'constructor') &&
|
|
(Ctor = value.constructor, typeof Ctor == 'function' && !(Ctor instanceof Ctor)))) {
|
|
return false;
|
|
}
|
|
// IE < 9 iterates inherited properties before own properties. If the first
|
|
// iterated property is an object's own property then there are no inherited
|
|
// enumerable properties.
|
|
var result;
|
|
// In most environments an object's own properties are iterated before
|
|
// its inherited properties. If the last iterated property is an object's
|
|
// own property then there are no inherited enumerable properties.
|
|
baseForIn(value, function(subValue, key) {
|
|
result = key;
|
|
});
|
|
return typeof result == 'undefined' || hasOwnProperty.call(value, result);
|
|
}
|
|
|
|
/**
|
|
* A fallback implementation of `Object.keys` which creates an array of the
|
|
* own enumerable property names of `object`.
|
|
*
|
|
* @private
|
|
* @param {Object} object The object to inspect.
|
|
* @returns {Array} Returns the array of property names.
|
|
*/
|
|
function shimKeys(object) {
|
|
var props = keysIn(object),
|
|
propsLength = props.length,
|
|
length = propsLength && object.length,
|
|
support = lodash.support;
|
|
|
|
var allowIndexes = length && isLength(length) &&
|
|
(isArray(object) || (support.nonEnumArgs && isArguments(object)));
|
|
|
|
var index = -1,
|
|
result = [];
|
|
|
|
while (++index < propsLength) {
|
|
var key = props[index];
|
|
if ((allowIndexes && isIndex(key, length)) || hasOwnProperty.call(object, key)) {
|
|
result.push(key);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Converts `value` to an array-like object if it is not one.
|
|
*
|
|
* @private
|
|
* @param {*} value The value to process.
|
|
* @returns {Array|Object} Returns the array-like object.
|
|
*/
|
|
function toIterable(value) {
|
|
if (value == null) {
|
|
return [];
|
|
}
|
|
if (!isLength(value.length)) {
|
|
return values(value);
|
|
}
|
|
return isObject(value) ? value : Object(value);
|
|
}
|
|
|
|
/**
|
|
* Converts `value` to an object if it is not one.
|
|
*
|
|
* @private
|
|
* @param {*} value The value to process.
|
|
* @returns {Object} Returns the object.
|
|
*/
|
|
function toObject(value) {
|
|
return isObject(value) ? value : Object(value);
|
|
}
|
|
|
|
/**
|
|
* Creates a clone of `wrapper`.
|
|
*
|
|
* @private
|
|
* @param {Object} wrapper The wrapper to clone.
|
|
* @returns {Object} Returns the cloned wrapper.
|
|
*/
|
|
function wrapperClone(wrapper) {
|
|
return wrapper instanceof LazyWrapper
|
|
? wrapper.clone()
|
|
: new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__, arrayCopy(wrapper.__actions__));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
* Creates an array of elements split into groups the length of `size`.
|
|
* If `collection` can't be split evenly, the final chunk will be the remaining
|
|
* elements.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to process.
|
|
* @param {number} [size=1] The length of each chunk.
|
|
* @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
|
|
* @returns {Array} Returns the new array containing chunks.
|
|
* @example
|
|
*
|
|
* _.chunk(['a', 'b', 'c', 'd'], 2);
|
|
* // => [['a', 'b'], ['c', 'd']]
|
|
*
|
|
* _.chunk(['a', 'b', 'c', 'd'], 3);
|
|
* // => [['a', 'b', 'c'], ['d']]
|
|
*/
|
|
function chunk(array, size, guard) {
|
|
if (guard ? isIterateeCall(array, size, guard) : size == null) {
|
|
size = 1;
|
|
} else {
|
|
size = nativeMax(+size || 1, 1);
|
|
}
|
|
var index = 0,
|
|
length = array ? array.length : 0,
|
|
resIndex = -1,
|
|
result = Array(ceil(length / size));
|
|
|
|
while (index < length) {
|
|
result[++resIndex] = baseSlice(array, index, (index += size));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Creates an array with all falsey values removed. The values `false`, `null`,
|
|
* `0`, `""`, `undefined`, and `NaN` are falsey.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to compact.
|
|
* @returns {Array} Returns the new array of filtered values.
|
|
* @example
|
|
*
|
|
* _.compact([0, 1, false, 2, '', 3]);
|
|
* // => [1, 2, 3]
|
|
*/
|
|
function compact(array) {
|
|
var index = -1,
|
|
length = array ? array.length : 0,
|
|
resIndex = -1,
|
|
result = [];
|
|
|
|
while (++index < length) {
|
|
var value = array[index];
|
|
if (value) {
|
|
result[++resIndex] = value;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Creates an array excluding all values of the provided arrays using
|
|
* `SameValueZero` for equality comparisons.
|
|
*
|
|
* **Note:** [`SameValueZero`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero)
|
|
* comparisons are like strict equality comparisons, e.g. `===`, except that
|
|
* `NaN` matches `NaN`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to inspect.
|
|
* @param {...Array} [values] The arrays of values to exclude.
|
|
* @returns {Array} Returns the new array of filtered values.
|
|
* @example
|
|
*
|
|
* _.difference([1, 2, 3], [4, 2]);
|
|
* // => [1, 3]
|
|
*/
|
|
var difference = restParam(function(array, values) {
|
|
return (isArray(array) || isArguments(array))
|
|
? baseDifference(array, baseFlatten(values, false, true))
|
|
: [];
|
|
});
|
|
|
|
/**
|
|
* Creates a slice of `array` with `n` elements dropped from the beginning.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to query.
|
|
* @param {number} [n=1] The number of elements to drop.
|
|
* @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
|
|
* @returns {Array} Returns the slice of `array`.
|
|
* @example
|
|
*
|
|
* _.drop([1, 2, 3]);
|
|
* // => [2, 3]
|
|
*
|
|
* _.drop([1, 2, 3], 2);
|
|
* // => [3]
|
|
*
|
|
* _.drop([1, 2, 3], 5);
|
|
* // => []
|
|
*
|
|
* _.drop([1, 2, 3], 0);
|
|
* // => [1, 2, 3]
|
|
*/
|
|
function drop(array, n, guard) {
|
|
var length = array ? array.length : 0;
|
|
if (!length) {
|
|
return [];
|
|
}
|
|
if (guard ? isIterateeCall(array, n, guard) : n == null) {
|
|
n = 1;
|
|
}
|
|
return baseSlice(array, n < 0 ? 0 : n);
|
|
}
|
|
|
|
/**
|
|
* Creates a slice of `array` with `n` elements dropped from the end.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to query.
|
|
* @param {number} [n=1] The number of elements to drop.
|
|
* @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
|
|
* @returns {Array} Returns the slice of `array`.
|
|
* @example
|
|
*
|
|
* _.dropRight([1, 2, 3]);
|
|
* // => [1, 2]
|
|
*
|
|
* _.dropRight([1, 2, 3], 2);
|
|
* // => [1]
|
|
*
|
|
* _.dropRight([1, 2, 3], 5);
|
|
* // => []
|
|
*
|
|
* _.dropRight([1, 2, 3], 0);
|
|
* // => [1, 2, 3]
|
|
*/
|
|
function dropRight(array, n, guard) {
|
|
var length = array ? array.length : 0;
|
|
if (!length) {
|
|
return [];
|
|
}
|
|
if (guard ? isIterateeCall(array, n, guard) : n == null) {
|
|
n = 1;
|
|
}
|
|
n = length - (+n || 0);
|
|
return baseSlice(array, 0, n < 0 ? 0 : n);
|
|
}
|
|
|
|
/**
|
|
* Creates a slice of `array` excluding elements dropped from the end.
|
|
* Elements are dropped until `predicate` returns falsey. The predicate is
|
|
* bound to `thisArg` and invoked with three arguments: (value, index, array).
|
|
*
|
|
* If a property name is provided for `predicate` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `predicate` the created `_.matches` style
|
|
* callback returns `true` for elements that match the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to query.
|
|
* @param {Function|Object|string} [predicate=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `predicate`.
|
|
* @returns {Array} Returns the slice of `array`.
|
|
* @example
|
|
*
|
|
* _.dropRightWhile([1, 2, 3], function(n) {
|
|
* return n > 1;
|
|
* });
|
|
* // => [1]
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'active': true },
|
|
* { 'user': 'fred', 'active': false },
|
|
* { 'user': 'pebbles', 'active': false }
|
|
* ];
|
|
*
|
|
* // using the `_.matches` callback shorthand
|
|
* _.pluck(_.dropRightWhile(users, { 'user': 'pebbles', 'active': false }), 'user');
|
|
* // => ['barney', 'fred']
|
|
*
|
|
* // using the `_.matchesProperty` callback shorthand
|
|
* _.pluck(_.dropRightWhile(users, 'active', false), 'user');
|
|
* // => ['barney']
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.pluck(_.dropRightWhile(users, 'active'), 'user');
|
|
* // => ['barney', 'fred', 'pebbles']
|
|
*/
|
|
function dropRightWhile(array, predicate, thisArg) {
|
|
return (array && array.length)
|
|
? baseWhile(array, getCallback(predicate, thisArg, 3), true, true)
|
|
: [];
|
|
}
|
|
|
|
/**
|
|
* Creates a slice of `array` excluding elements dropped from the beginning.
|
|
* Elements are dropped until `predicate` returns falsey. The predicate is
|
|
* bound to `thisArg` and invoked with three arguments: (value, index, array).
|
|
*
|
|
* If a property name is provided for `predicate` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `predicate` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to query.
|
|
* @param {Function|Object|string} [predicate=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `predicate`.
|
|
* @returns {Array} Returns the slice of `array`.
|
|
* @example
|
|
*
|
|
* _.dropWhile([1, 2, 3], function(n) {
|
|
* return n < 3;
|
|
* });
|
|
* // => [3]
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'active': false },
|
|
* { 'user': 'fred', 'active': false },
|
|
* { 'user': 'pebbles', 'active': true }
|
|
* ];
|
|
*
|
|
* // using the `_.matches` callback shorthand
|
|
* _.pluck(_.dropWhile(users, { 'user': 'barney', 'active': false }), 'user');
|
|
* // => ['fred', 'pebbles']
|
|
*
|
|
* // using the `_.matchesProperty` callback shorthand
|
|
* _.pluck(_.dropWhile(users, 'active', false), 'user');
|
|
* // => ['pebbles']
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.pluck(_.dropWhile(users, 'active'), 'user');
|
|
* // => ['barney', 'fred', 'pebbles']
|
|
*/
|
|
function dropWhile(array, predicate, thisArg) {
|
|
return (array && array.length)
|
|
? baseWhile(array, getCallback(predicate, thisArg, 3), true)
|
|
: [];
|
|
}
|
|
|
|
/**
|
|
* Fills elements of `array` with `value` from `start` up to, but not
|
|
* including, `end`.
|
|
*
|
|
* **Note:** This method mutates `array`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to fill.
|
|
* @param {*} value The value to fill `array` with.
|
|
* @param {number} [start=0] The start position.
|
|
* @param {number} [end=array.length] The end position.
|
|
* @returns {Array} Returns `array`.
|
|
* @example
|
|
*
|
|
* var array = [1, 2, 3];
|
|
*
|
|
* _.fill(array, 'a');
|
|
* console.log(array);
|
|
* // => ['a', 'a', 'a']
|
|
*
|
|
* _.fill(Array(3), 2);
|
|
* // => [2, 2, 2]
|
|
*
|
|
* _.fill([4, 6, 8], '*', 1, 2);
|
|
* // => [4, '*', 8]
|
|
*/
|
|
function fill(array, value, start, end) {
|
|
var length = array ? array.length : 0;
|
|
if (!length) {
|
|
return [];
|
|
}
|
|
if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {
|
|
start = 0;
|
|
end = length;
|
|
}
|
|
return baseFill(array, value, start, end);
|
|
}
|
|
|
|
/**
|
|
* This method is like `_.find` except that it returns the index of the first
|
|
* element `predicate` returns truthy for instead of the element itself.
|
|
*
|
|
* If a property name is provided for `predicate` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `predicate` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to search.
|
|
* @param {Function|Object|string} [predicate=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `predicate`.
|
|
* @returns {number} Returns the index of the found element, else `-1`.
|
|
* @example
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'active': false },
|
|
* { 'user': 'fred', 'active': false },
|
|
* { 'user': 'pebbles', 'active': true }
|
|
* ];
|
|
*
|
|
* _.findIndex(users, function(chr) {
|
|
* return chr.user == 'barney';
|
|
* });
|
|
* // => 0
|
|
*
|
|
* // using the `_.matches` callback shorthand
|
|
* _.findIndex(users, { 'user': 'fred', 'active': false });
|
|
* // => 1
|
|
*
|
|
* // using the `_.matchesProperty` callback shorthand
|
|
* _.findIndex(users, 'active', false);
|
|
* // => 0
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.findIndex(users, 'active');
|
|
* // => 2
|
|
*/
|
|
var findIndex = createFindIndex();
|
|
|
|
/**
|
|
* This method is like `_.findIndex` except that it iterates over elements
|
|
* of `collection` from right to left.
|
|
*
|
|
* If a property name is provided for `predicate` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `predicate` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to search.
|
|
* @param {Function|Object|string} [predicate=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `predicate`.
|
|
* @returns {number} Returns the index of the found element, else `-1`.
|
|
* @example
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'active': true },
|
|
* { 'user': 'fred', 'active': false },
|
|
* { 'user': 'pebbles', 'active': false }
|
|
* ];
|
|
*
|
|
* _.findLastIndex(users, function(chr) {
|
|
* return chr.user == 'pebbles';
|
|
* });
|
|
* // => 2
|
|
*
|
|
* // using the `_.matches` callback shorthand
|
|
* _.findLastIndex(users, { 'user': 'barney', 'active': true });
|
|
* // => 0
|
|
*
|
|
* // using the `_.matchesProperty` callback shorthand
|
|
* _.findLastIndex(users, 'active', false);
|
|
* // => 2
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.findLastIndex(users, 'active');
|
|
* // => 0
|
|
*/
|
|
var findLastIndex = createFindIndex(true);
|
|
|
|
/**
|
|
* Gets the first element of `array`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @alias head
|
|
* @category Array
|
|
* @param {Array} array The array to query.
|
|
* @returns {*} Returns the first element of `array`.
|
|
* @example
|
|
*
|
|
* _.first([1, 2, 3]);
|
|
* // => 1
|
|
*
|
|
* _.first([]);
|
|
* // => undefined
|
|
*/
|
|
function first(array) {
|
|
return array ? array[0] : undefined;
|
|
}
|
|
|
|
/**
|
|
* Flattens a nested array. If `isDeep` is `true` the array is recursively
|
|
* flattened, otherwise it is only flattened a single level.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to flatten.
|
|
* @param {boolean} [isDeep] Specify a deep flatten.
|
|
* @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
|
|
* @returns {Array} Returns the new flattened array.
|
|
* @example
|
|
*
|
|
* _.flatten([1, [2, 3, [4]]]);
|
|
* // => [1, 2, 3, [4]]
|
|
*
|
|
* // using `isDeep`
|
|
* _.flatten([1, [2, 3, [4]]], true);
|
|
* // => [1, 2, 3, 4]
|
|
*/
|
|
function flatten(array, isDeep, guard) {
|
|
var length = array ? array.length : 0;
|
|
if (guard && isIterateeCall(array, isDeep, guard)) {
|
|
isDeep = false;
|
|
}
|
|
return length ? baseFlatten(array, isDeep) : [];
|
|
}
|
|
|
|
/**
|
|
* Recursively flattens a nested array.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to recursively flatten.
|
|
* @returns {Array} Returns the new flattened array.
|
|
* @example
|
|
*
|
|
* _.flattenDeep([1, [2, 3, [4]]]);
|
|
* // => [1, 2, 3, 4]
|
|
*/
|
|
function flattenDeep(array) {
|
|
var length = array ? array.length : 0;
|
|
return length ? baseFlatten(array, true) : [];
|
|
}
|
|
|
|
/**
|
|
* Gets the index at which the first occurrence of `value` is found in `array`
|
|
* using `SameValueZero` for equality comparisons. If `fromIndex` is negative,
|
|
* it is used as the offset from the end of `array`. If `array` is sorted
|
|
* providing `true` for `fromIndex` performs a faster binary search.
|
|
*
|
|
* **Note:** [`SameValueZero`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero)
|
|
* comparisons are like strict equality comparisons, e.g. `===`, except that
|
|
* `NaN` matches `NaN`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to search.
|
|
* @param {*} value The value to search for.
|
|
* @param {boolean|number} [fromIndex=0] The index to search from or `true`
|
|
* to perform a binary search on a sorted array.
|
|
* @returns {number} Returns the index of the matched value, else `-1`.
|
|
* @example
|
|
*
|
|
* _.indexOf([1, 2, 1, 2], 2);
|
|
* // => 1
|
|
*
|
|
* // using `fromIndex`
|
|
* _.indexOf([1, 2, 1, 2], 2, 2);
|
|
* // => 3
|
|
*
|
|
* // performing a binary search
|
|
* _.indexOf([1, 1, 2, 2], 2, true);
|
|
* // => 2
|
|
*/
|
|
function indexOf(array, value, fromIndex) {
|
|
var length = array ? array.length : 0;
|
|
if (!length) {
|
|
return -1;
|
|
}
|
|
if (typeof fromIndex == 'number') {
|
|
fromIndex = fromIndex < 0 ? nativeMax(length + fromIndex, 0) : fromIndex;
|
|
} else if (fromIndex) {
|
|
var index = binaryIndex(array, value),
|
|
other = array[index];
|
|
|
|
if (value === value ? (value === other) : (other !== other)) {
|
|
return index;
|
|
}
|
|
return -1;
|
|
}
|
|
return baseIndexOf(array, value, fromIndex || 0);
|
|
}
|
|
|
|
/**
|
|
* Gets all but the last element of `array`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to query.
|
|
* @returns {Array} Returns the slice of `array`.
|
|
* @example
|
|
*
|
|
* _.initial([1, 2, 3]);
|
|
* // => [1, 2]
|
|
*/
|
|
function initial(array) {
|
|
return dropRight(array, 1);
|
|
}
|
|
|
|
/**
|
|
* Creates an array of unique values in all provided arrays using `SameValueZero`
|
|
* for equality comparisons.
|
|
*
|
|
* **Note:** [`SameValueZero`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero)
|
|
* comparisons are like strict equality comparisons, e.g. `===`, except that
|
|
* `NaN` matches `NaN`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {...Array} [arrays] The arrays to inspect.
|
|
* @returns {Array} Returns the new array of shared values.
|
|
* @example
|
|
* _.intersection([1, 2], [4, 2], [2, 1]);
|
|
* // => [2]
|
|
*/
|
|
function intersection() {
|
|
var args = [],
|
|
argsIndex = -1,
|
|
argsLength = arguments.length,
|
|
caches = [],
|
|
indexOf = getIndexOf(),
|
|
isCommon = indexOf == baseIndexOf;
|
|
|
|
while (++argsIndex < argsLength) {
|
|
var value = arguments[argsIndex];
|
|
if (isArray(value) || isArguments(value)) {
|
|
args.push(value);
|
|
caches.push((isCommon && value.length >= 120) ? createCache(argsIndex && value) : null);
|
|
}
|
|
}
|
|
argsLength = args.length;
|
|
var array = args[0],
|
|
index = -1,
|
|
length = array ? array.length : 0,
|
|
result = [],
|
|
seen = caches[0];
|
|
|
|
outer:
|
|
while (++index < length) {
|
|
value = array[index];
|
|
if ((seen ? cacheIndexOf(seen, value) : indexOf(result, value, 0)) < 0) {
|
|
argsIndex = argsLength;
|
|
while (--argsIndex) {
|
|
var cache = caches[argsIndex];
|
|
if ((cache ? cacheIndexOf(cache, value) : indexOf(args[argsIndex], value, 0)) < 0) {
|
|
continue outer;
|
|
}
|
|
}
|
|
if (seen) {
|
|
seen.push(value);
|
|
}
|
|
result.push(value);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Gets the last element of `array`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to query.
|
|
* @returns {*} Returns the last element of `array`.
|
|
* @example
|
|
*
|
|
* _.last([1, 2, 3]);
|
|
* // => 3
|
|
*/
|
|
function last(array) {
|
|
var length = array ? array.length : 0;
|
|
return length ? array[length - 1] : undefined;
|
|
}
|
|
|
|
/**
|
|
* This method is like `_.indexOf` except that it iterates over elements of
|
|
* `array` from right to left.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to search.
|
|
* @param {*} value The value to search for.
|
|
* @param {boolean|number} [fromIndex=array.length-1] The index to search from
|
|
* or `true` to perform a binary search on a sorted array.
|
|
* @returns {number} Returns the index of the matched value, else `-1`.
|
|
* @example
|
|
*
|
|
* _.lastIndexOf([1, 2, 1, 2], 2);
|
|
* // => 3
|
|
*
|
|
* // using `fromIndex`
|
|
* _.lastIndexOf([1, 2, 1, 2], 2, 2);
|
|
* // => 1
|
|
*
|
|
* // performing a binary search
|
|
* _.lastIndexOf([1, 1, 2, 2], 2, true);
|
|
* // => 3
|
|
*/
|
|
function lastIndexOf(array, value, fromIndex) {
|
|
var length = array ? array.length : 0;
|
|
if (!length) {
|
|
return -1;
|
|
}
|
|
var index = length;
|
|
if (typeof fromIndex == 'number') {
|
|
index = (fromIndex < 0 ? nativeMax(length + fromIndex, 0) : nativeMin(fromIndex || 0, length - 1)) + 1;
|
|
} else if (fromIndex) {
|
|
index = binaryIndex(array, value, true) - 1;
|
|
var other = array[index];
|
|
if (value === value ? (value === other) : (other !== other)) {
|
|
return index;
|
|
}
|
|
return -1;
|
|
}
|
|
if (value !== value) {
|
|
return indexOfNaN(array, index, true);
|
|
}
|
|
while (index--) {
|
|
if (array[index] === value) {
|
|
return index;
|
|
}
|
|
}
|
|
return -1;
|
|
}
|
|
|
|
/**
|
|
* Removes all provided values from `array` using `SameValueZero` for equality
|
|
* comparisons.
|
|
*
|
|
* **Notes:**
|
|
* - Unlike `_.without`, this method mutates `array`
|
|
* - [`SameValueZero`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero)
|
|
* comparisons are like strict equality comparisons, e.g. `===`, except
|
|
* that `NaN` matches `NaN`
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to modify.
|
|
* @param {...*} [values] The values to remove.
|
|
* @returns {Array} Returns `array`.
|
|
* @example
|
|
*
|
|
* var array = [1, 2, 3, 1, 2, 3];
|
|
*
|
|
* _.pull(array, 2, 3);
|
|
* console.log(array);
|
|
* // => [1, 1]
|
|
*/
|
|
function pull() {
|
|
var args = arguments,
|
|
array = args[0];
|
|
|
|
if (!(array && array.length)) {
|
|
return array;
|
|
}
|
|
var index = 0,
|
|
indexOf = getIndexOf(),
|
|
length = args.length;
|
|
|
|
while (++index < length) {
|
|
var fromIndex = 0,
|
|
value = args[index];
|
|
|
|
while ((fromIndex = indexOf(array, value, fromIndex)) > -1) {
|
|
splice.call(array, fromIndex, 1);
|
|
}
|
|
}
|
|
return array;
|
|
}
|
|
|
|
/**
|
|
* Removes elements from `array` corresponding to the given indexes and returns
|
|
* an array of the removed elements. Indexes may be specified as an array of
|
|
* indexes or as individual arguments.
|
|
*
|
|
* **Note:** Unlike `_.at`, this method mutates `array`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to modify.
|
|
* @param {...(number|number[])} [indexes] The indexes of elements to remove,
|
|
* specified as individual indexes or arrays of indexes.
|
|
* @returns {Array} Returns the new array of removed elements.
|
|
* @example
|
|
*
|
|
* var array = [5, 10, 15, 20];
|
|
* var evens = _.pullAt(array, 1, 3);
|
|
*
|
|
* console.log(array);
|
|
* // => [5, 15]
|
|
*
|
|
* console.log(evens);
|
|
* // => [10, 20]
|
|
*/
|
|
var pullAt = restParam(function(array, indexes) {
|
|
array || (array = []);
|
|
indexes = baseFlatten(indexes);
|
|
|
|
var length = indexes.length,
|
|
result = baseAt(array, indexes);
|
|
|
|
indexes.sort(baseCompareAscending);
|
|
while (length--) {
|
|
var index = parseFloat(indexes[length]);
|
|
if (index != previous && isIndex(index)) {
|
|
var previous = index;
|
|
splice.call(array, index, 1);
|
|
}
|
|
}
|
|
return result;
|
|
});
|
|
|
|
/**
|
|
* Removes all elements from `array` that `predicate` returns truthy for
|
|
* and returns an array of the removed elements. The predicate is bound to
|
|
* `thisArg` and invoked with three arguments: (value, index, array).
|
|
*
|
|
* If a property name is provided for `predicate` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `predicate` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* **Note:** Unlike `_.filter`, this method mutates `array`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to modify.
|
|
* @param {Function|Object|string} [predicate=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `predicate`.
|
|
* @returns {Array} Returns the new array of removed elements.
|
|
* @example
|
|
*
|
|
* var array = [1, 2, 3, 4];
|
|
* var evens = _.remove(array, function(n) {
|
|
* return n % 2 == 0;
|
|
* });
|
|
*
|
|
* console.log(array);
|
|
* // => [1, 3]
|
|
*
|
|
* console.log(evens);
|
|
* // => [2, 4]
|
|
*/
|
|
function remove(array, predicate, thisArg) {
|
|
var index = -1,
|
|
length = array ? array.length : 0,
|
|
result = [];
|
|
|
|
predicate = getCallback(predicate, thisArg, 3);
|
|
while (++index < length) {
|
|
var value = array[index];
|
|
if (predicate(value, index, array)) {
|
|
result.push(value);
|
|
splice.call(array, index--, 1);
|
|
length--;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Gets all but the first element of `array`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @alias tail
|
|
* @category Array
|
|
* @param {Array} array The array to query.
|
|
* @returns {Array} Returns the slice of `array`.
|
|
* @example
|
|
*
|
|
* _.rest([1, 2, 3]);
|
|
* // => [2, 3]
|
|
*/
|
|
function rest(array) {
|
|
return drop(array, 1);
|
|
}
|
|
|
|
/**
|
|
* Creates a slice of `array` from `start` up to, but not including, `end`.
|
|
*
|
|
* **Note:** This function is used instead of `Array#slice` to support node
|
|
* lists in IE < 9 and to ensure dense arrays are returned.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to slice.
|
|
* @param {number} [start=0] The start position.
|
|
* @param {number} [end=array.length] The end position.
|
|
* @returns {Array} Returns the slice of `array`.
|
|
*/
|
|
function slice(array, start, end) {
|
|
var length = array ? array.length : 0;
|
|
if (!length) {
|
|
return [];
|
|
}
|
|
if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {
|
|
start = 0;
|
|
end = length;
|
|
}
|
|
return baseSlice(array, start, end);
|
|
}
|
|
|
|
/**
|
|
* Uses a binary search to determine the lowest index at which `value` should
|
|
* be inserted into `array` in order to maintain its sort order. If an iteratee
|
|
* function is provided it is invoked for `value` and each element of `array`
|
|
* to compute their sort ranking. The iteratee is bound to `thisArg` and
|
|
* invoked with one argument; (value).
|
|
*
|
|
* If a property name is provided for `iteratee` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `iteratee` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The sorted array to inspect.
|
|
* @param {*} value The value to evaluate.
|
|
* @param {Function|Object|string} [iteratee=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {number} Returns the index at which `value` should be inserted
|
|
* into `array`.
|
|
* @example
|
|
*
|
|
* _.sortedIndex([30, 50], 40);
|
|
* // => 1
|
|
*
|
|
* _.sortedIndex([4, 4, 5, 5], 5);
|
|
* // => 2
|
|
*
|
|
* var dict = { 'data': { 'thirty': 30, 'forty': 40, 'fifty': 50 } };
|
|
*
|
|
* // using an iteratee function
|
|
* _.sortedIndex(['thirty', 'fifty'], 'forty', function(word) {
|
|
* return this.data[word];
|
|
* }, dict);
|
|
* // => 1
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.sortedIndex([{ 'x': 30 }, { 'x': 50 }], { 'x': 40 }, 'x');
|
|
* // => 1
|
|
*/
|
|
var sortedIndex = createSortedIndex();
|
|
|
|
/**
|
|
* This method is like `_.sortedIndex` except that it returns the highest
|
|
* index at which `value` should be inserted into `array` in order to
|
|
* maintain its sort order.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The sorted array to inspect.
|
|
* @param {*} value The value to evaluate.
|
|
* @param {Function|Object|string} [iteratee=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {number} Returns the index at which `value` should be inserted
|
|
* into `array`.
|
|
* @example
|
|
*
|
|
* _.sortedLastIndex([4, 4, 5, 5], 5);
|
|
* // => 4
|
|
*/
|
|
var sortedLastIndex = createSortedIndex(true);
|
|
|
|
/**
|
|
* Creates a slice of `array` with `n` elements taken from the beginning.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to query.
|
|
* @param {number} [n=1] The number of elements to take.
|
|
* @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
|
|
* @returns {Array} Returns the slice of `array`.
|
|
* @example
|
|
*
|
|
* _.take([1, 2, 3]);
|
|
* // => [1]
|
|
*
|
|
* _.take([1, 2, 3], 2);
|
|
* // => [1, 2]
|
|
*
|
|
* _.take([1, 2, 3], 5);
|
|
* // => [1, 2, 3]
|
|
*
|
|
* _.take([1, 2, 3], 0);
|
|
* // => []
|
|
*/
|
|
function take(array, n, guard) {
|
|
var length = array ? array.length : 0;
|
|
if (!length) {
|
|
return [];
|
|
}
|
|
if (guard ? isIterateeCall(array, n, guard) : n == null) {
|
|
n = 1;
|
|
}
|
|
return baseSlice(array, 0, n < 0 ? 0 : n);
|
|
}
|
|
|
|
/**
|
|
* Creates a slice of `array` with `n` elements taken from the end.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to query.
|
|
* @param {number} [n=1] The number of elements to take.
|
|
* @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
|
|
* @returns {Array} Returns the slice of `array`.
|
|
* @example
|
|
*
|
|
* _.takeRight([1, 2, 3]);
|
|
* // => [3]
|
|
*
|
|
* _.takeRight([1, 2, 3], 2);
|
|
* // => [2, 3]
|
|
*
|
|
* _.takeRight([1, 2, 3], 5);
|
|
* // => [1, 2, 3]
|
|
*
|
|
* _.takeRight([1, 2, 3], 0);
|
|
* // => []
|
|
*/
|
|
function takeRight(array, n, guard) {
|
|
var length = array ? array.length : 0;
|
|
if (!length) {
|
|
return [];
|
|
}
|
|
if (guard ? isIterateeCall(array, n, guard) : n == null) {
|
|
n = 1;
|
|
}
|
|
n = length - (+n || 0);
|
|
return baseSlice(array, n < 0 ? 0 : n);
|
|
}
|
|
|
|
/**
|
|
* Creates a slice of `array` with elements taken from the end. Elements are
|
|
* taken until `predicate` returns falsey. The predicate is bound to `thisArg`
|
|
* and invoked with three arguments: (value, index, array).
|
|
*
|
|
* If a property name is provided for `predicate` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `predicate` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to query.
|
|
* @param {Function|Object|string} [predicate=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `predicate`.
|
|
* @returns {Array} Returns the slice of `array`.
|
|
* @example
|
|
*
|
|
* _.takeRightWhile([1, 2, 3], function(n) {
|
|
* return n > 1;
|
|
* });
|
|
* // => [2, 3]
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'active': true },
|
|
* { 'user': 'fred', 'active': false },
|
|
* { 'user': 'pebbles', 'active': false }
|
|
* ];
|
|
*
|
|
* // using the `_.matches` callback shorthand
|
|
* _.pluck(_.takeRightWhile(users, { 'user': 'pebbles', 'active': false }), 'user');
|
|
* // => ['pebbles']
|
|
*
|
|
* // using the `_.matchesProperty` callback shorthand
|
|
* _.pluck(_.takeRightWhile(users, 'active', false), 'user');
|
|
* // => ['fred', 'pebbles']
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.pluck(_.takeRightWhile(users, 'active'), 'user');
|
|
* // => []
|
|
*/
|
|
function takeRightWhile(array, predicate, thisArg) {
|
|
return (array && array.length)
|
|
? baseWhile(array, getCallback(predicate, thisArg, 3), false, true)
|
|
: [];
|
|
}
|
|
|
|
/**
|
|
* Creates a slice of `array` with elements taken from the beginning. Elements
|
|
* are taken until `predicate` returns falsey. The predicate is bound to
|
|
* `thisArg` and invoked with three arguments: (value, index, array).
|
|
*
|
|
* If a property name is provided for `predicate` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `predicate` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to query.
|
|
* @param {Function|Object|string} [predicate=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `predicate`.
|
|
* @returns {Array} Returns the slice of `array`.
|
|
* @example
|
|
*
|
|
* _.takeWhile([1, 2, 3], function(n) {
|
|
* return n < 3;
|
|
* });
|
|
* // => [1, 2]
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'active': false },
|
|
* { 'user': 'fred', 'active': false},
|
|
* { 'user': 'pebbles', 'active': true }
|
|
* ];
|
|
*
|
|
* // using the `_.matches` callback shorthand
|
|
* _.pluck(_.takeWhile(users, { 'user': 'barney', 'active': false }), 'user');
|
|
* // => ['barney']
|
|
*
|
|
* // using the `_.matchesProperty` callback shorthand
|
|
* _.pluck(_.takeWhile(users, 'active', false), 'user');
|
|
* // => ['barney', 'fred']
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.pluck(_.takeWhile(users, 'active'), 'user');
|
|
* // => []
|
|
*/
|
|
function takeWhile(array, predicate, thisArg) {
|
|
return (array && array.length)
|
|
? baseWhile(array, getCallback(predicate, thisArg, 3))
|
|
: [];
|
|
}
|
|
|
|
/**
|
|
* Creates an array of unique values, in order, of the provided arrays using
|
|
* `SameValueZero` for equality comparisons.
|
|
*
|
|
* **Note:** [`SameValueZero`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero)
|
|
* comparisons are like strict equality comparisons, e.g. `===`, except that
|
|
* `NaN` matches `NaN`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {...Array} [arrays] The arrays to inspect.
|
|
* @returns {Array} Returns the new array of combined values.
|
|
* @example
|
|
*
|
|
* _.union([1, 2], [4, 2], [2, 1]);
|
|
* // => [1, 2, 4]
|
|
*/
|
|
var union = restParam(function(arrays) {
|
|
return baseUniq(baseFlatten(arrays, false, true));
|
|
});
|
|
|
|
/**
|
|
* Creates a duplicate-value-free version of an array using `SameValueZero`
|
|
* for equality comparisons. Providing `true` for `isSorted` performs a faster
|
|
* search algorithm for sorted arrays. If an iteratee function is provided it
|
|
* is invoked for each value in the array to generate the criterion by which
|
|
* uniqueness is computed. The `iteratee` is bound to `thisArg` and invoked
|
|
* with three arguments: (value, index, array).
|
|
*
|
|
* If a property name is provided for `iteratee` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `iteratee` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* **Note:** [`SameValueZero`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero)
|
|
* comparisons are like strict equality comparisons, e.g. `===`, except that
|
|
* `NaN` matches `NaN`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @alias unique
|
|
* @category Array
|
|
* @param {Array} array The array to inspect.
|
|
* @param {boolean} [isSorted] Specify the array is sorted.
|
|
* @param {Function|Object|string} [iteratee] The function invoked per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {Array} Returns the new duplicate-value-free array.
|
|
* @example
|
|
*
|
|
* _.uniq([1, 2, 1]);
|
|
* // => [1, 2]
|
|
*
|
|
* // using `isSorted`
|
|
* _.uniq([1, 1, 2], true);
|
|
* // => [1, 2]
|
|
*
|
|
* // using an iteratee function
|
|
* _.uniq([1, 2.5, 1.5, 2], function(n) {
|
|
* return this.floor(n);
|
|
* }, Math);
|
|
* // => [1, 2.5]
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.uniq([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');
|
|
* // => [{ 'x': 1 }, { 'x': 2 }]
|
|
*/
|
|
function uniq(array, isSorted, iteratee, thisArg) {
|
|
var length = array ? array.length : 0;
|
|
if (!length) {
|
|
return [];
|
|
}
|
|
if (isSorted != null && typeof isSorted != 'boolean') {
|
|
thisArg = iteratee;
|
|
iteratee = isIterateeCall(array, isSorted, thisArg) ? null : isSorted;
|
|
isSorted = false;
|
|
}
|
|
var func = getCallback();
|
|
if (!(func === baseCallback && iteratee == null)) {
|
|
iteratee = func(iteratee, thisArg, 3);
|
|
}
|
|
return (isSorted && getIndexOf() == baseIndexOf)
|
|
? sortedUniq(array, iteratee)
|
|
: baseUniq(array, iteratee);
|
|
}
|
|
|
|
/**
|
|
* This method is like `_.zip` except that it accepts an array of grouped
|
|
* elements and creates an array regrouping the elements to their pre-`_.zip`
|
|
* configuration.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array of grouped elements to process.
|
|
* @returns {Array} Returns the new array of regrouped elements.
|
|
* @example
|
|
*
|
|
* var zipped = _.zip(['fred', 'barney'], [30, 40], [true, false]);
|
|
* // => [['fred', 30, true], ['barney', 40, false]]
|
|
*
|
|
* _.unzip(zipped);
|
|
* // => [['fred', 'barney'], [30, 40], [true, false]]
|
|
*/
|
|
function unzip(array) {
|
|
var index = -1,
|
|
length = (array && array.length && arrayMax(arrayMap(array, getLength))) >>> 0,
|
|
result = Array(length);
|
|
|
|
while (++index < length) {
|
|
result[index] = arrayMap(array, baseProperty(index));
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Creates an array excluding all provided values using `SameValueZero` for
|
|
* equality comparisons.
|
|
*
|
|
* **Note:** [`SameValueZero`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero)
|
|
* comparisons are like strict equality comparisons, e.g. `===`, except that
|
|
* `NaN` matches `NaN`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {Array} array The array to filter.
|
|
* @param {...*} [values] The values to exclude.
|
|
* @returns {Array} Returns the new array of filtered values.
|
|
* @example
|
|
*
|
|
* _.without([1, 2, 1, 3], 1, 2);
|
|
* // => [3]
|
|
*/
|
|
var without = restParam(function(array, values) {
|
|
return (isArray(array) || isArguments(array))
|
|
? baseDifference(array, values)
|
|
: [];
|
|
});
|
|
|
|
/**
|
|
* Creates an array that is the [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)
|
|
* of the provided arrays.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {...Array} [arrays] The arrays to inspect.
|
|
* @returns {Array} Returns the new array of values.
|
|
* @example
|
|
*
|
|
* _.xor([1, 2], [4, 2]);
|
|
* // => [1, 4]
|
|
*/
|
|
function xor() {
|
|
var index = -1,
|
|
length = arguments.length;
|
|
|
|
while (++index < length) {
|
|
var array = arguments[index];
|
|
if (isArray(array) || isArguments(array)) {
|
|
var result = result
|
|
? baseDifference(result, array).concat(baseDifference(array, result))
|
|
: array;
|
|
}
|
|
}
|
|
return result ? baseUniq(result) : [];
|
|
}
|
|
|
|
/**
|
|
* Creates an array of grouped elements, the first of which contains the first
|
|
* elements of the given arrays, the second of which contains the second elements
|
|
* of the given arrays, and so on.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Array
|
|
* @param {...Array} [arrays] The arrays to process.
|
|
* @returns {Array} Returns the new array of grouped elements.
|
|
* @example
|
|
*
|
|
* _.zip(['fred', 'barney'], [30, 40], [true, false]);
|
|
* // => [['fred', 30, true], ['barney', 40, false]]
|
|
*/
|
|
var zip = restParam(unzip);
|
|
|
|
/**
|
|
* The inverse of `_.pairs`; this method returns an object composed from arrays
|
|
* of property names and values. Provide either a single two dimensional array,
|
|
* e.g. `[[key1, value1], [key2, value2]]` or two arrays, one of property names
|
|
* and one of corresponding values.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @alias object
|
|
* @category Array
|
|
* @param {Array} props The property names.
|
|
* @param {Array} [values=[]] The property values.
|
|
* @returns {Object} Returns the new object.
|
|
* @example
|
|
*
|
|
* _.zipObject([['fred', 30], ['barney', 40]]);
|
|
* // => { 'fred': 30, 'barney': 40 }
|
|
*
|
|
* _.zipObject(['fred', 'barney'], [30, 40]);
|
|
* // => { 'fred': 30, 'barney': 40 }
|
|
*/
|
|
function zipObject(props, values) {
|
|
var index = -1,
|
|
length = props ? props.length : 0,
|
|
result = {};
|
|
|
|
if (length && !values && !isArray(props[0])) {
|
|
values = [];
|
|
}
|
|
while (++index < length) {
|
|
var key = props[index];
|
|
if (values) {
|
|
result[key] = values[index];
|
|
} else if (key) {
|
|
result[key[0]] = key[1];
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
* Creates a `lodash` object that wraps `value` with explicit method
|
|
* chaining enabled.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Chain
|
|
* @param {*} value The value to wrap.
|
|
* @returns {Object} Returns the new `lodash` wrapper instance.
|
|
* @example
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'age': 36 },
|
|
* { 'user': 'fred', 'age': 40 },
|
|
* { 'user': 'pebbles', 'age': 1 }
|
|
* ];
|
|
*
|
|
* var youngest = _.chain(users)
|
|
* .sortBy('age')
|
|
* .map(function(chr) {
|
|
* return chr.user + ' is ' + chr.age;
|
|
* })
|
|
* .first()
|
|
* .value();
|
|
* // => 'pebbles is 1'
|
|
*/
|
|
function chain(value) {
|
|
var result = lodash(value);
|
|
result.__chain__ = true;
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* This method invokes `interceptor` and returns `value`. The interceptor is
|
|
* bound to `thisArg` and invoked with one argument; (value). The purpose of
|
|
* this method is to "tap into" a method chain in order to perform operations
|
|
* on intermediate results within the chain.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Chain
|
|
* @param {*} value The value to provide to `interceptor`.
|
|
* @param {Function} interceptor The function to invoke.
|
|
* @param {*} [thisArg] The `this` binding of `interceptor`.
|
|
* @returns {*} Returns `value`.
|
|
* @example
|
|
*
|
|
* _([1, 2, 3])
|
|
* .tap(function(array) {
|
|
* array.pop();
|
|
* })
|
|
* .reverse()
|
|
* .value();
|
|
* // => [2, 1]
|
|
*/
|
|
function tap(value, interceptor, thisArg) {
|
|
interceptor.call(thisArg, value);
|
|
return value;
|
|
}
|
|
|
|
/**
|
|
* This method is like `_.tap` except that it returns the result of `interceptor`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Chain
|
|
* @param {*} value The value to provide to `interceptor`.
|
|
* @param {Function} interceptor The function to invoke.
|
|
* @param {*} [thisArg] The `this` binding of `interceptor`.
|
|
* @returns {*} Returns the result of `interceptor`.
|
|
* @example
|
|
*
|
|
* _(' abc ')
|
|
* .chain()
|
|
* .trim()
|
|
* .thru(function(value) {
|
|
* return [value];
|
|
* })
|
|
* .value();
|
|
* // => ['abc']
|
|
*/
|
|
function thru(value, interceptor, thisArg) {
|
|
return interceptor.call(thisArg, value);
|
|
}
|
|
|
|
/**
|
|
* Enables explicit method chaining on the wrapper object.
|
|
*
|
|
* @name chain
|
|
* @memberOf _
|
|
* @category Chain
|
|
* @returns {Object} Returns the new `lodash` wrapper instance.
|
|
* @example
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'age': 36 },
|
|
* { 'user': 'fred', 'age': 40 }
|
|
* ];
|
|
*
|
|
* // without explicit chaining
|
|
* _(users).first();
|
|
* // => { 'user': 'barney', 'age': 36 }
|
|
*
|
|
* // with explicit chaining
|
|
* _(users).chain()
|
|
* .first()
|
|
* .pick('user')
|
|
* .value();
|
|
* // => { 'user': 'barney' }
|
|
*/
|
|
function wrapperChain() {
|
|
return chain(this);
|
|
}
|
|
|
|
/**
|
|
* Executes the chained sequence and returns the wrapped result.
|
|
*
|
|
* @name commit
|
|
* @memberOf _
|
|
* @category Chain
|
|
* @returns {Object} Returns the new `lodash` wrapper instance.
|
|
* @example
|
|
*
|
|
* var array = [1, 2];
|
|
* var wrapper = _(array).push(3);
|
|
*
|
|
* console.log(array);
|
|
* // => [1, 2]
|
|
*
|
|
* wrapper = wrapper.commit();
|
|
* console.log(array);
|
|
* // => [1, 2, 3]
|
|
*
|
|
* wrapper.last();
|
|
* // => 3
|
|
*
|
|
* console.log(array);
|
|
* // => [1, 2, 3]
|
|
*/
|
|
function wrapperCommit() {
|
|
return new LodashWrapper(this.value(), this.__chain__);
|
|
}
|
|
|
|
/**
|
|
* Creates a clone of the chained sequence planting `value` as the wrapped value.
|
|
*
|
|
* @name plant
|
|
* @memberOf _
|
|
* @category Chain
|
|
* @returns {Object} Returns the new `lodash` wrapper instance.
|
|
* @example
|
|
*
|
|
* var array = [1, 2];
|
|
* var wrapper = _(array).map(function(value) {
|
|
* return Math.pow(value, 2);
|
|
* });
|
|
*
|
|
* var other = [3, 4];
|
|
* var otherWrapper = wrapper.plant(other);
|
|
*
|
|
* otherWrapper.value();
|
|
* // => [9, 16]
|
|
*
|
|
* wrapper.value();
|
|
* // => [1, 4]
|
|
*/
|
|
function wrapperPlant(value) {
|
|
var result,
|
|
parent = this;
|
|
|
|
while (parent instanceof baseLodash) {
|
|
var clone = wrapperClone(parent);
|
|
if (result) {
|
|
previous.__wrapped__ = clone;
|
|
} else {
|
|
result = clone;
|
|
}
|
|
var previous = clone;
|
|
parent = parent.__wrapped__;
|
|
}
|
|
previous.__wrapped__ = value;
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Reverses the wrapped array so the first element becomes the last, the
|
|
* second element becomes the second to last, and so on.
|
|
*
|
|
* **Note:** This method mutates the wrapped array.
|
|
*
|
|
* @name reverse
|
|
* @memberOf _
|
|
* @category Chain
|
|
* @returns {Object} Returns the new reversed `lodash` wrapper instance.
|
|
* @example
|
|
*
|
|
* var array = [1, 2, 3];
|
|
*
|
|
* _(array).reverse().value()
|
|
* // => [3, 2, 1]
|
|
*
|
|
* console.log(array);
|
|
* // => [3, 2, 1]
|
|
*/
|
|
function wrapperReverse() {
|
|
var value = this.__wrapped__;
|
|
if (value instanceof LazyWrapper) {
|
|
if (this.__actions__.length) {
|
|
value = new LazyWrapper(this);
|
|
}
|
|
return new LodashWrapper(value.reverse(), this.__chain__);
|
|
}
|
|
return this.thru(function(value) {
|
|
return value.reverse();
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Produces the result of coercing the unwrapped value to a string.
|
|
*
|
|
* @name toString
|
|
* @memberOf _
|
|
* @category Chain
|
|
* @returns {string} Returns the coerced string value.
|
|
* @example
|
|
*
|
|
* _([1, 2, 3]).toString();
|
|
* // => '1,2,3'
|
|
*/
|
|
function wrapperToString() {
|
|
return (this.value() + '');
|
|
}
|
|
|
|
/**
|
|
* Executes the chained sequence to extract the unwrapped value.
|
|
*
|
|
* @name value
|
|
* @memberOf _
|
|
* @alias run, toJSON, valueOf
|
|
* @category Chain
|
|
* @returns {*} Returns the resolved unwrapped value.
|
|
* @example
|
|
*
|
|
* _([1, 2, 3]).value();
|
|
* // => [1, 2, 3]
|
|
*/
|
|
function wrapperValue() {
|
|
return baseWrapperValue(this.__wrapped__, this.__actions__);
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
* Creates an array of elements corresponding to the given keys, or indexes,
|
|
* of `collection`. Keys may be specified as individual arguments or as arrays
|
|
* of keys.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {...(number|number[]|string|string[])} [props] The property names
|
|
* or indexes of elements to pick, specified individually or in arrays.
|
|
* @returns {Array} Returns the new array of picked elements.
|
|
* @example
|
|
*
|
|
* _.at(['a', 'b', 'c'], [0, 2]);
|
|
* // => ['a', 'c']
|
|
*
|
|
* _.at(['barney', 'fred', 'pebbles'], 0, 2);
|
|
* // => ['barney', 'pebbles']
|
|
*/
|
|
var at = restParam(function(collection, props) {
|
|
var length = collection ? collection.length : 0;
|
|
if (isLength(length)) {
|
|
collection = toIterable(collection);
|
|
}
|
|
return baseAt(collection, baseFlatten(props));
|
|
});
|
|
|
|
/**
|
|
* Creates an object composed of keys generated from the results of running
|
|
* each element of `collection` through `iteratee`. The corresponding value
|
|
* of each key is the number of times the key was returned by `iteratee`.
|
|
* The `iteratee` is bound to `thisArg` and invoked with three arguments:
|
|
* (value, index|key, collection).
|
|
*
|
|
* If a property name is provided for `iteratee` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `iteratee` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function|Object|string} [iteratee=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {Object} Returns the composed aggregate object.
|
|
* @example
|
|
*
|
|
* _.countBy([4.3, 6.1, 6.4], function(n) {
|
|
* return Math.floor(n);
|
|
* });
|
|
* // => { '4': 1, '6': 2 }
|
|
*
|
|
* _.countBy([4.3, 6.1, 6.4], function(n) {
|
|
* return this.floor(n);
|
|
* }, Math);
|
|
* // => { '4': 1, '6': 2 }
|
|
*
|
|
* _.countBy(['one', 'two', 'three'], 'length');
|
|
* // => { '3': 2, '5': 1 }
|
|
*/
|
|
var countBy = createAggregator(function(result, value, key) {
|
|
hasOwnProperty.call(result, key) ? ++result[key] : (result[key] = 1);
|
|
});
|
|
|
|
/**
|
|
* Checks if `predicate` returns truthy for **all** elements of `collection`.
|
|
* The predicate is bound to `thisArg` and invoked with three arguments:
|
|
* (value, index|key, collection).
|
|
*
|
|
* If a property name is provided for `predicate` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `predicate` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @alias all
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function|Object|string} [predicate=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `predicate`.
|
|
* @returns {boolean} Returns `true` if all elements pass the predicate check,
|
|
* else `false`.
|
|
* @example
|
|
*
|
|
* _.every([true, 1, null, 'yes'], Boolean);
|
|
* // => false
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'active': false },
|
|
* { 'user': 'fred', 'active': false }
|
|
* ];
|
|
*
|
|
* // using the `_.matches` callback shorthand
|
|
* _.every(users, { 'user': 'barney', 'active': false });
|
|
* // => false
|
|
*
|
|
* // using the `_.matchesProperty` callback shorthand
|
|
* _.every(users, 'active', false);
|
|
* // => true
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.every(users, 'active');
|
|
* // => false
|
|
*/
|
|
function every(collection, predicate, thisArg) {
|
|
var func = isArray(collection) ? arrayEvery : baseEvery;
|
|
if (thisArg && isIterateeCall(collection, predicate, thisArg)) {
|
|
predicate = null;
|
|
}
|
|
if (typeof predicate != 'function' || typeof thisArg != 'undefined') {
|
|
predicate = getCallback(predicate, thisArg, 3);
|
|
}
|
|
return func(collection, predicate);
|
|
}
|
|
|
|
/**
|
|
* Iterates over elements of `collection`, returning an array of all elements
|
|
* `predicate` returns truthy for. The predicate is bound to `thisArg` and
|
|
* invoked with three arguments: (value, index|key, collection).
|
|
*
|
|
* If a property name is provided for `predicate` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `predicate` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @alias select
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function|Object|string} [predicate=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `predicate`.
|
|
* @returns {Array} Returns the new filtered array.
|
|
* @example
|
|
*
|
|
* _.filter([4, 5, 6], function(n) {
|
|
* return n % 2 == 0;
|
|
* });
|
|
* // => [4, 6]
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'age': 36, 'active': true },
|
|
* { 'user': 'fred', 'age': 40, 'active': false }
|
|
* ];
|
|
*
|
|
* // using the `_.matches` callback shorthand
|
|
* _.pluck(_.filter(users, { 'age': 36, 'active': true }), 'user');
|
|
* // => ['barney']
|
|
*
|
|
* // using the `_.matchesProperty` callback shorthand
|
|
* _.pluck(_.filter(users, 'active', false), 'user');
|
|
* // => ['fred']
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.pluck(_.filter(users, 'active'), 'user');
|
|
* // => ['barney']
|
|
*/
|
|
function filter(collection, predicate, thisArg) {
|
|
var func = isArray(collection) ? arrayFilter : baseFilter;
|
|
predicate = getCallback(predicate, thisArg, 3);
|
|
return func(collection, predicate);
|
|
}
|
|
|
|
/**
|
|
* Iterates over elements of `collection`, returning the first element
|
|
* `predicate` returns truthy for. The predicate is bound to `thisArg` and
|
|
* invoked with three arguments: (value, index|key, collection).
|
|
*
|
|
* If a property name is provided for `predicate` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `predicate` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @alias detect
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to search.
|
|
* @param {Function|Object|string} [predicate=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `predicate`.
|
|
* @returns {*} Returns the matched element, else `undefined`.
|
|
* @example
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'age': 36, 'active': true },
|
|
* { 'user': 'fred', 'age': 40, 'active': false },
|
|
* { 'user': 'pebbles', 'age': 1, 'active': true }
|
|
* ];
|
|
*
|
|
* _.result(_.find(users, function(chr) {
|
|
* return chr.age < 40;
|
|
* }), 'user');
|
|
* // => 'barney'
|
|
*
|
|
* // using the `_.matches` callback shorthand
|
|
* _.result(_.find(users, { 'age': 1, 'active': true }), 'user');
|
|
* // => 'pebbles'
|
|
*
|
|
* // using the `_.matchesProperty` callback shorthand
|
|
* _.result(_.find(users, 'active', false), 'user');
|
|
* // => 'fred'
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.result(_.find(users, 'active'), 'user');
|
|
* // => 'barney'
|
|
*/
|
|
var find = createFind(baseEach);
|
|
|
|
/**
|
|
* This method is like `_.find` except that it iterates over elements of
|
|
* `collection` from right to left.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to search.
|
|
* @param {Function|Object|string} [predicate=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `predicate`.
|
|
* @returns {*} Returns the matched element, else `undefined`.
|
|
* @example
|
|
*
|
|
* _.findLast([1, 2, 3, 4], function(n) {
|
|
* return n % 2 == 1;
|
|
* });
|
|
* // => 3
|
|
*/
|
|
var findLast = createFind(baseEachRight, true);
|
|
|
|
/**
|
|
* Performs a deep comparison between each element in `collection` and the
|
|
* source object, returning the first element that has equivalent property
|
|
* values.
|
|
*
|
|
* **Note:** This method supports comparing arrays, booleans, `Date` objects,
|
|
* numbers, `Object` objects, regexes, and strings. Objects are compared by
|
|
* their own, not inherited, enumerable properties. For comparing a single
|
|
* own or inherited property value see `_.matchesProperty`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to search.
|
|
* @param {Object} source The object of property values to match.
|
|
* @returns {*} Returns the matched element, else `undefined`.
|
|
* @example
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'age': 36, 'active': true },
|
|
* { 'user': 'fred', 'age': 40, 'active': false }
|
|
* ];
|
|
*
|
|
* _.result(_.findWhere(users, { 'age': 36, 'active': true }), 'user');
|
|
* // => 'barney'
|
|
*
|
|
* _.result(_.findWhere(users, { 'age': 40, 'active': false }), 'user');
|
|
* // => 'fred'
|
|
*/
|
|
function findWhere(collection, source) {
|
|
return find(collection, baseMatches(source));
|
|
}
|
|
|
|
/**
|
|
* Iterates over elements of `collection` invoking `iteratee` for each element.
|
|
* The `iteratee` is bound to `thisArg` and invoked with three arguments:
|
|
* (value, index|key, collection). Iterator functions may exit iteration early
|
|
* by explicitly returning `false`.
|
|
*
|
|
* **Note:** As with other "Collections" methods, objects with a `length` property
|
|
* are iterated like arrays. To avoid this behavior `_.forIn` or `_.forOwn`
|
|
* may be used for object iteration.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @alias each
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {Array|Object|string} Returns `collection`.
|
|
* @example
|
|
*
|
|
* _([1, 2]).forEach(function(n) {
|
|
* console.log(n);
|
|
* }).value();
|
|
* // => logs each value from left to right and returns the array
|
|
*
|
|
* _.forEach({ 'a': 1, 'b': 2 }, function(n, key) {
|
|
* console.log(n, key);
|
|
* });
|
|
* // => logs each value-key pair and returns the object (iteration order is not guaranteed)
|
|
*/
|
|
var forEach = createForEach(arrayEach, baseEach);
|
|
|
|
/**
|
|
* This method is like `_.forEach` except that it iterates over elements of
|
|
* `collection` from right to left.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @alias eachRight
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {Array|Object|string} Returns `collection`.
|
|
* @example
|
|
*
|
|
* _([1, 2]).forEachRight(function(n) {
|
|
* console.log(n);
|
|
* }).value();
|
|
* // => logs each value from right to left and returns the array
|
|
*/
|
|
var forEachRight = createForEach(arrayEachRight, baseEachRight);
|
|
|
|
/**
|
|
* Creates an object composed of keys generated from the results of running
|
|
* each element of `collection` through `iteratee`. The corresponding value
|
|
* of each key is an array of the elements responsible for generating the key.
|
|
* The `iteratee` is bound to `thisArg` and invoked with three arguments:
|
|
* (value, index|key, collection).
|
|
*
|
|
* If a property name is provided for `iteratee` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `iteratee` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function|Object|string} [iteratee=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {Object} Returns the composed aggregate object.
|
|
* @example
|
|
*
|
|
* _.groupBy([4.2, 6.1, 6.4], function(n) {
|
|
* return Math.floor(n);
|
|
* });
|
|
* // => { '4': [4.2], '6': [6.1, 6.4] }
|
|
*
|
|
* _.groupBy([4.2, 6.1, 6.4], function(n) {
|
|
* return this.floor(n);
|
|
* }, Math);
|
|
* // => { '4': [4.2], '6': [6.1, 6.4] }
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.groupBy(['one', 'two', 'three'], 'length');
|
|
* // => { '3': ['one', 'two'], '5': ['three'] }
|
|
*/
|
|
var groupBy = createAggregator(function(result, value, key) {
|
|
if (hasOwnProperty.call(result, key)) {
|
|
result[key].push(value);
|
|
} else {
|
|
result[key] = [value];
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Checks if `value` is in `collection` using `SameValueZero` for equality
|
|
* comparisons. If `fromIndex` is negative, it is used as the offset from
|
|
* the end of `collection`.
|
|
*
|
|
* **Note:** [`SameValueZero`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-samevaluezero)
|
|
* comparisons are like strict equality comparisons, e.g. `===`, except that
|
|
* `NaN` matches `NaN`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @alias contains, include
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to search.
|
|
* @param {*} target The value to search for.
|
|
* @param {number} [fromIndex=0] The index to search from.
|
|
* @param- {Object} [guard] Enables use as a callback for functions like `_.reduce`.
|
|
* @returns {boolean} Returns `true` if a matching element is found, else `false`.
|
|
* @example
|
|
*
|
|
* _.includes([1, 2, 3], 1);
|
|
* // => true
|
|
*
|
|
* _.includes([1, 2, 3], 1, 2);
|
|
* // => false
|
|
*
|
|
* _.includes({ 'user': 'fred', 'age': 40 }, 'fred');
|
|
* // => true
|
|
*
|
|
* _.includes('pebbles', 'eb');
|
|
* // => true
|
|
*/
|
|
function includes(collection, target, fromIndex, guard) {
|
|
var length = collection ? collection.length : 0;
|
|
if (!isLength(length)) {
|
|
collection = values(collection);
|
|
length = collection.length;
|
|
}
|
|
if (!length) {
|
|
return false;
|
|
}
|
|
if (typeof fromIndex != 'number' || (guard && isIterateeCall(target, fromIndex, guard))) {
|
|
fromIndex = 0;
|
|
} else {
|
|
fromIndex = fromIndex < 0 ? nativeMax(length + fromIndex, 0) : (fromIndex || 0);
|
|
}
|
|
return (typeof collection == 'string' || !isArray(collection) && isString(collection))
|
|
? (fromIndex < length && collection.indexOf(target, fromIndex) > -1)
|
|
: (getIndexOf(collection, target, fromIndex) > -1);
|
|
}
|
|
|
|
/**
|
|
* Creates an object composed of keys generated from the results of running
|
|
* each element of `collection` through `iteratee`. The corresponding value
|
|
* of each key is the last element responsible for generating the key. The
|
|
* iteratee function is bound to `thisArg` and invoked with three arguments:
|
|
* (value, index|key, collection).
|
|
*
|
|
* If a property name is provided for `iteratee` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `iteratee` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function|Object|string} [iteratee=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {Object} Returns the composed aggregate object.
|
|
* @example
|
|
*
|
|
* var keyData = [
|
|
* { 'dir': 'left', 'code': 97 },
|
|
* { 'dir': 'right', 'code': 100 }
|
|
* ];
|
|
*
|
|
* _.indexBy(keyData, 'dir');
|
|
* // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }
|
|
*
|
|
* _.indexBy(keyData, function(object) {
|
|
* return String.fromCharCode(object.code);
|
|
* });
|
|
* // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
|
|
*
|
|
* _.indexBy(keyData, function(object) {
|
|
* return this.fromCharCode(object.code);
|
|
* }, String);
|
|
* // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
|
|
*/
|
|
var indexBy = createAggregator(function(result, value, key) {
|
|
result[key] = value;
|
|
});
|
|
|
|
/**
|
|
* Invokes the method named by `methodName` on each element in `collection`,
|
|
* returning an array of the results of each invoked method. Any additional
|
|
* arguments are provided to each invoked method. If `methodName` is a function
|
|
* it is invoked for, and `this` bound to, each element in `collection`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function|string} methodName The name of the method to invoke or
|
|
* the function invoked per iteration.
|
|
* @param {...*} [args] The arguments to invoke the method with.
|
|
* @returns {Array} Returns the array of results.
|
|
* @example
|
|
*
|
|
* _.invoke([[5, 1, 7], [3, 2, 1]], 'sort');
|
|
* // => [[1, 5, 7], [1, 2, 3]]
|
|
*
|
|
* _.invoke([123, 456], String.prototype.split, '');
|
|
* // => [['1', '2', '3'], ['4', '5', '6']]
|
|
*/
|
|
var invoke = restParam(function(collection, methodName, args) {
|
|
var index = -1,
|
|
isFunc = typeof methodName == 'function',
|
|
length = collection ? collection.length : 0,
|
|
result = isLength(length) ? Array(length) : [];
|
|
|
|
baseEach(collection, function(value) {
|
|
var func = isFunc ? methodName : (value != null && value[methodName]);
|
|
result[++index] = func ? func.apply(value, args) : undefined;
|
|
});
|
|
return result;
|
|
});
|
|
|
|
/**
|
|
* Creates an array of values by running each element in `collection` through
|
|
* `iteratee`. The `iteratee` is bound to `thisArg` and invoked with three
|
|
* arguments: (value, index|key, collection).
|
|
*
|
|
* If a property name is provided for `iteratee` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `iteratee` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* Many lodash methods are guarded to work as interatees for methods like
|
|
* `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.
|
|
*
|
|
* The guarded methods are:
|
|
* `ary`, `callback`, `chunk`, `clone`, `create`, `curry`, `curryRight`, `drop`,
|
|
* `dropRight`, `every`, `fill`, `flatten`, `invert`, `max`, `min`, `parseInt`,
|
|
* `slice`, `sortBy`, `take`, `takeRight`, `template`, `trim`, `trimLeft`,
|
|
* `trimRight`, `trunc`, `random`, `range`, `sample`, `some`, `uniq`, and `words`
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @alias collect
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function|Object|string} [iteratee=_.identity] The function invoked
|
|
* per iteration.
|
|
* create a `_.property` or `_.matches` style callback respectively.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {Array} Returns the new mapped array.
|
|
* @example
|
|
*
|
|
* function timesThree(n) {
|
|
* return n * 3;
|
|
* }
|
|
*
|
|
* _.map([1, 2], timesThree);
|
|
* // => [3, 6]
|
|
*
|
|
* _.map({ 'a': 1, 'b': 2 }, timesThree);
|
|
* // => [3, 6] (iteration order is not guaranteed)
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney' },
|
|
* { 'user': 'fred' }
|
|
* ];
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.map(users, 'user');
|
|
* // => ['barney', 'fred']
|
|
*/
|
|
function map(collection, iteratee, thisArg) {
|
|
var func = isArray(collection) ? arrayMap : baseMap;
|
|
iteratee = getCallback(iteratee, thisArg, 3);
|
|
return func(collection, iteratee);
|
|
}
|
|
|
|
/**
|
|
* Creates an array of elements split into two groups, the first of which
|
|
* contains elements `predicate` returns truthy for, while the second of which
|
|
* contains elements `predicate` returns falsey for. The predicate is bound
|
|
* to `thisArg` and invoked with three arguments: (value, index|key, collection).
|
|
*
|
|
* If a property name is provided for `predicate` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `predicate` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function|Object|string} [predicate=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `predicate`.
|
|
* @returns {Array} Returns the array of grouped elements.
|
|
* @example
|
|
*
|
|
* _.partition([1, 2, 3], function(n) {
|
|
* return n % 2;
|
|
* });
|
|
* // => [[1, 3], [2]]
|
|
*
|
|
* _.partition([1.2, 2.3, 3.4], function(n) {
|
|
* return this.floor(n) % 2;
|
|
* }, Math);
|
|
* // => [[1.2, 3.4], [2.3]]
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'age': 36, 'active': false },
|
|
* { 'user': 'fred', 'age': 40, 'active': true },
|
|
* { 'user': 'pebbles', 'age': 1, 'active': false }
|
|
* ];
|
|
*
|
|
* var mapper = function(array) {
|
|
* return _.pluck(array, 'user');
|
|
* };
|
|
*
|
|
* // using the `_.matches` callback shorthand
|
|
* _.map(_.partition(users, { 'age': 1, 'active': false }), mapper);
|
|
* // => [['pebbles'], ['barney', 'fred']]
|
|
*
|
|
* // using the `_.matchesProperty` callback shorthand
|
|
* _.map(_.partition(users, 'active', false), mapper);
|
|
* // => [['barney', 'pebbles'], ['fred']]
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.map(_.partition(users, 'active'), mapper);
|
|
* // => [['fred'], ['barney', 'pebbles']]
|
|
*/
|
|
var partition = createAggregator(function(result, value, key) {
|
|
result[key ? 0 : 1].push(value);
|
|
}, function() { return [[], []]; });
|
|
|
|
/**
|
|
* Gets the value of `key` from all elements in `collection`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {string} key The key of the property to pluck.
|
|
* @returns {Array} Returns the property values.
|
|
* @example
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'age': 36 },
|
|
* { 'user': 'fred', 'age': 40 }
|
|
* ];
|
|
*
|
|
* _.pluck(users, 'user');
|
|
* // => ['barney', 'fred']
|
|
*
|
|
* var userIndex = _.indexBy(users, 'user');
|
|
* _.pluck(userIndex, 'age');
|
|
* // => [36, 40] (iteration order is not guaranteed)
|
|
*/
|
|
function pluck(collection, key) {
|
|
return map(collection, baseProperty(key));
|
|
}
|
|
|
|
/**
|
|
* Reduces `collection` to a value which is the accumulated result of running
|
|
* each element in `collection` through `iteratee`, where each successive
|
|
* invocation is supplied the return value of the previous. If `accumulator`
|
|
* is not provided the first element of `collection` is used as the initial
|
|
* value. The `iteratee` is bound to `thisArg` and invoked with four arguments:
|
|
* (accumulator, value, index|key, collection).
|
|
*
|
|
* Many lodash methods are guarded to work as interatees for methods like
|
|
* `_.reduce`, `_.reduceRight`, and `_.transform`.
|
|
*
|
|
* The guarded methods are:
|
|
* `assign`, `defaults`, `includes`, `merge`, `sortByAll`, and `sortByOrder`
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @alias foldl, inject
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
|
|
* @param {*} [accumulator] The initial value.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {*} Returns the accumulated value.
|
|
* @example
|
|
*
|
|
* _.reduce([1, 2], function(sum, n) {
|
|
* return sum + n;
|
|
* });
|
|
* // => 3
|
|
*
|
|
* _.reduce({ 'a': 1, 'b': 2 }, function(result, n, key) {
|
|
* result[key] = n * 3;
|
|
* return result;
|
|
* }, {});
|
|
* // => { 'a': 3, 'b': 6 } (iteration order is not guaranteed)
|
|
*/
|
|
var reduce = createReduce(arrayReduce, baseEach);
|
|
|
|
/**
|
|
* This method is like `_.reduce` except that it iterates over elements of
|
|
* `collection` from right to left.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @alias foldr
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
|
|
* @param {*} [accumulator] The initial value.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {*} Returns the accumulated value.
|
|
* @example
|
|
*
|
|
* var array = [[0, 1], [2, 3], [4, 5]];
|
|
*
|
|
* _.reduceRight(array, function(flattened, other) {
|
|
* return flattened.concat(other);
|
|
* }, []);
|
|
* // => [4, 5, 2, 3, 0, 1]
|
|
*/
|
|
var reduceRight = createReduce(arrayReduceRight, baseEachRight);
|
|
|
|
/**
|
|
* The opposite of `_.filter`; this method returns the elements of `collection`
|
|
* that `predicate` does **not** return truthy for.
|
|
*
|
|
* If a property name is provided for `predicate` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `predicate` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function|Object|string} [predicate=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `predicate`.
|
|
* @returns {Array} Returns the new filtered array.
|
|
* @example
|
|
*
|
|
* _.reject([1, 2, 3, 4], function(n) {
|
|
* return n % 2 == 0;
|
|
* });
|
|
* // => [1, 3]
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'age': 36, 'active': false },
|
|
* { 'user': 'fred', 'age': 40, 'active': true }
|
|
* ];
|
|
*
|
|
* // using the `_.matches` callback shorthand
|
|
* _.pluck(_.reject(users, { 'age': 40, 'active': true }), 'user');
|
|
* // => ['barney']
|
|
*
|
|
* // using the `_.matchesProperty` callback shorthand
|
|
* _.pluck(_.reject(users, 'active', false), 'user');
|
|
* // => ['fred']
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.pluck(_.reject(users, 'active'), 'user');
|
|
* // => ['barney']
|
|
*/
|
|
function reject(collection, predicate, thisArg) {
|
|
var func = isArray(collection) ? arrayFilter : baseFilter;
|
|
predicate = getCallback(predicate, thisArg, 3);
|
|
return func(collection, function(value, index, collection) {
|
|
return !predicate(value, index, collection);
|
|
});
|
|
}
|
|
|
|
/**
|
|
* Gets a random element or `n` random elements from a collection.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to sample.
|
|
* @param {number} [n] The number of elements to sample.
|
|
* @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
|
|
* @returns {*} Returns the random sample(s).
|
|
* @example
|
|
*
|
|
* _.sample([1, 2, 3, 4]);
|
|
* // => 2
|
|
*
|
|
* _.sample([1, 2, 3, 4], 2);
|
|
* // => [3, 1]
|
|
*/
|
|
function sample(collection, n, guard) {
|
|
if (guard ? isIterateeCall(collection, n, guard) : n == null) {
|
|
collection = toIterable(collection);
|
|
var length = collection.length;
|
|
return length > 0 ? collection[baseRandom(0, length - 1)] : undefined;
|
|
}
|
|
var result = shuffle(collection);
|
|
result.length = nativeMin(n < 0 ? 0 : (+n || 0), result.length);
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Creates an array of shuffled values, using a version of the
|
|
* [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle).
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to shuffle.
|
|
* @returns {Array} Returns the new shuffled array.
|
|
* @example
|
|
*
|
|
* _.shuffle([1, 2, 3, 4]);
|
|
* // => [4, 1, 3, 2]
|
|
*/
|
|
function shuffle(collection) {
|
|
collection = toIterable(collection);
|
|
|
|
var index = -1,
|
|
length = collection.length,
|
|
result = Array(length);
|
|
|
|
while (++index < length) {
|
|
var rand = baseRandom(0, index);
|
|
if (index != rand) {
|
|
result[index] = result[rand];
|
|
}
|
|
result[rand] = collection[index];
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Gets the size of `collection` by returning its length for array-like
|
|
* values or the number of own enumerable properties for objects.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to inspect.
|
|
* @returns {number} Returns the size of `collection`.
|
|
* @example
|
|
*
|
|
* _.size([1, 2, 3]);
|
|
* // => 3
|
|
*
|
|
* _.size({ 'a': 1, 'b': 2 });
|
|
* // => 2
|
|
*
|
|
* _.size('pebbles');
|
|
* // => 7
|
|
*/
|
|
function size(collection) {
|
|
var length = collection ? collection.length : 0;
|
|
return isLength(length) ? length : keys(collection).length;
|
|
}
|
|
|
|
/**
|
|
* Checks if `predicate` returns truthy for **any** element of `collection`.
|
|
* The function returns as soon as it finds a passing value and does not iterate
|
|
* over the entire collection. The predicate is bound to `thisArg` and invoked
|
|
* with three arguments: (value, index|key, collection).
|
|
*
|
|
* If a property name is provided for `predicate` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `predicate` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @alias any
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function|Object|string} [predicate=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `predicate`.
|
|
* @returns {boolean} Returns `true` if any element passes the predicate check,
|
|
* else `false`.
|
|
* @example
|
|
*
|
|
* _.some([null, 0, 'yes', false], Boolean);
|
|
* // => true
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'active': true },
|
|
* { 'user': 'fred', 'active': false }
|
|
* ];
|
|
*
|
|
* // using the `_.matches` callback shorthand
|
|
* _.some(users, { 'user': 'barney', 'active': false });
|
|
* // => false
|
|
*
|
|
* // using the `_.matchesProperty` callback shorthand
|
|
* _.some(users, 'active', false);
|
|
* // => true
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.some(users, 'active');
|
|
* // => true
|
|
*/
|
|
function some(collection, predicate, thisArg) {
|
|
var func = isArray(collection) ? arraySome : baseSome;
|
|
if (thisArg && isIterateeCall(collection, predicate, thisArg)) {
|
|
predicate = null;
|
|
}
|
|
if (typeof predicate != 'function' || typeof thisArg != 'undefined') {
|
|
predicate = getCallback(predicate, thisArg, 3);
|
|
}
|
|
return func(collection, predicate);
|
|
}
|
|
|
|
/**
|
|
* Creates an array of elements, sorted in ascending order by the results of
|
|
* running each element in a collection through `iteratee`. This method performs
|
|
* a stable sort, that is, it preserves the original sort order of equal elements.
|
|
* The `iteratee` is bound to `thisArg` and invoked with three arguments:
|
|
* (value, index|key, collection).
|
|
*
|
|
* If a property name is provided for `iteratee` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `iteratee` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Array|Function|Object|string} [iteratee=_.identity] The function
|
|
* invoked per iteration. If a property name or an object is provided it is
|
|
* used to create a `_.property` or `_.matches` style callback respectively.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {Array} Returns the new sorted array.
|
|
* @example
|
|
*
|
|
* _.sortBy([1, 2, 3], function(n) {
|
|
* return Math.sin(n);
|
|
* });
|
|
* // => [3, 1, 2]
|
|
*
|
|
* _.sortBy([1, 2, 3], function(n) {
|
|
* return this.sin(n);
|
|
* }, Math);
|
|
* // => [3, 1, 2]
|
|
*
|
|
* var users = [
|
|
* { 'user': 'fred' },
|
|
* { 'user': 'pebbles' },
|
|
* { 'user': 'barney' }
|
|
* ];
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.pluck(_.sortBy(users, 'user'), 'user');
|
|
* // => ['barney', 'fred', 'pebbles']
|
|
*/
|
|
function sortBy(collection, iteratee, thisArg) {
|
|
if (collection == null) {
|
|
return [];
|
|
}
|
|
var index = -1,
|
|
length = collection.length,
|
|
result = isLength(length) ? Array(length) : [];
|
|
|
|
if (thisArg && isIterateeCall(collection, iteratee, thisArg)) {
|
|
iteratee = null;
|
|
}
|
|
iteratee = getCallback(iteratee, thisArg, 3);
|
|
baseEach(collection, function(value, key, collection) {
|
|
result[++index] = { 'criteria': iteratee(value, key, collection), 'index': index, 'value': value };
|
|
});
|
|
return baseSortBy(result, compareAscending);
|
|
}
|
|
|
|
/**
|
|
* This method is like `_.sortBy` except that it sorts by property names
|
|
* instead of an iteratee function.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {...(string|string[])} props The property names to sort by,
|
|
* specified as individual property names or arrays of property names.
|
|
* @returns {Array} Returns the new sorted array.
|
|
* @example
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'age': 36 },
|
|
* { 'user': 'fred', 'age': 40 },
|
|
* { 'user': 'barney', 'age': 26 },
|
|
* { 'user': 'fred', 'age': 30 }
|
|
* ];
|
|
*
|
|
* _.map(_.sortByAll(users, ['user', 'age']), _.values);
|
|
* // => [['barney', 26], ['barney', 36], ['fred', 30], ['fred', 40]]
|
|
*/
|
|
function sortByAll() {
|
|
var args = arguments,
|
|
collection = args[0],
|
|
guard = args[3],
|
|
index = 0,
|
|
length = args.length - 1;
|
|
|
|
if (collection == null) {
|
|
return [];
|
|
}
|
|
var props = Array(length);
|
|
while (index < length) {
|
|
props[index] = args[++index];
|
|
}
|
|
if (guard && isIterateeCall(args[1], args[2], guard)) {
|
|
props = args[1];
|
|
}
|
|
return baseSortByOrder(collection, baseFlatten(props), []);
|
|
}
|
|
|
|
/**
|
|
* This method is like `_.sortByAll` except that it allows specifying the
|
|
* sort orders of the property names to sort by. A truthy value in `orders`
|
|
* will sort the corresponding property name in ascending order while a
|
|
* falsey value will sort it in descending order.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {string[]} props The property names to sort by.
|
|
* @param {boolean[]} orders The sort orders of `props`.
|
|
* @param- {Object} [guard] Enables use as a callback for functions like `_.reduce`.
|
|
* @returns {Array} Returns the new sorted array.
|
|
* @example
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'age': 26 },
|
|
* { 'user': 'fred', 'age': 40 },
|
|
* { 'user': 'barney', 'age': 36 },
|
|
* { 'user': 'fred', 'age': 30 }
|
|
* ];
|
|
*
|
|
* // sort by `user` in ascending order and by `age` in descending order
|
|
* _.map(_.sortByOrder(users, ['user', 'age'], [true, false]), _.values);
|
|
* // => [['barney', 36], ['barney', 26], ['fred', 40], ['fred', 30]]
|
|
*/
|
|
function sortByOrder(collection, props, orders, guard) {
|
|
if (collection == null) {
|
|
return [];
|
|
}
|
|
if (guard && isIterateeCall(props, orders, guard)) {
|
|
orders = null;
|
|
}
|
|
if (!isArray(props)) {
|
|
props = props == null ? [] : [props];
|
|
}
|
|
if (!isArray(orders)) {
|
|
orders = orders == null ? [] : [orders];
|
|
}
|
|
return baseSortByOrder(collection, props, orders);
|
|
}
|
|
|
|
/**
|
|
* Performs a deep comparison between each element in `collection` and the
|
|
* source object, returning an array of all elements that have equivalent
|
|
* property values.
|
|
*
|
|
* **Note:** This method supports comparing arrays, booleans, `Date` objects,
|
|
* numbers, `Object` objects, regexes, and strings. Objects are compared by
|
|
* their own, not inherited, enumerable properties. For comparing a single
|
|
* own or inherited property value see `_.matchesProperty`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Collection
|
|
* @param {Array|Object|string} collection The collection to search.
|
|
* @param {Object} source The object of property values to match.
|
|
* @returns {Array} Returns the new filtered array.
|
|
* @example
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'age': 36, 'active': false, 'pets': ['hoppy'] },
|
|
* { 'user': 'fred', 'age': 40, 'active': true, 'pets': ['baby puss', 'dino'] }
|
|
* ];
|
|
*
|
|
* _.pluck(_.where(users, { 'age': 36, 'active': false }), 'user');
|
|
* // => ['barney']
|
|
*
|
|
* _.pluck(_.where(users, { 'pets': ['dino'] }), 'user');
|
|
* // => ['fred']
|
|
*/
|
|
function where(collection, source) {
|
|
return filter(collection, baseMatches(source));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
* Gets the number of milliseconds that have elapsed since the Unix epoch
|
|
* (1 January 1970 00:00:00 UTC).
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Date
|
|
* @example
|
|
*
|
|
* _.defer(function(stamp) {
|
|
* console.log(_.now() - stamp);
|
|
* }, _.now());
|
|
* // => logs the number of milliseconds it took for the deferred function to be invoked
|
|
*/
|
|
var now = nativeNow || function() {
|
|
return new Date().getTime();
|
|
};
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
* The opposite of `_.before`; this method creates a function that invokes
|
|
* `func` once it is called `n` or more times.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Function
|
|
* @param {number} n The number of calls before `func` is invoked.
|
|
* @param {Function} func The function to restrict.
|
|
* @returns {Function} Returns the new restricted function.
|
|
* @example
|
|
*
|
|
* var saves = ['profile', 'settings'];
|
|
*
|
|
* var done = _.after(saves.length, function() {
|
|
* console.log('done saving!');
|
|
* });
|
|
*
|
|
* _.forEach(saves, function(type) {
|
|
* asyncSave({ 'type': type, 'complete': done });
|
|
* });
|
|
* // => logs 'done saving!' after the two async saves have completed
|
|
*/
|
|
function after(n, func) {
|
|
if (typeof func != 'function') {
|
|
if (typeof n == 'function') {
|
|
var temp = n;
|
|
n = func;
|
|
func = temp;
|
|
} else {
|
|
throw new TypeError(FUNC_ERROR_TEXT);
|
|
}
|
|
}
|
|
n = nativeIsFinite(n = +n) ? n : 0;
|
|
return function() {
|
|
if (--n < 1) {
|
|
return func.apply(this, arguments);
|
|
}
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a function that accepts up to `n` arguments ignoring any
|
|
* additional arguments.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Function
|
|
* @param {Function} func The function to cap arguments for.
|
|
* @param {number} [n=func.length] The arity cap.
|
|
* @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
|
|
* @returns {Function} Returns the new function.
|
|
* @example
|
|
*
|
|
* _.map(['6', '8', '10'], _.ary(parseInt, 1));
|
|
* // => [6, 8, 10]
|
|
*/
|
|
function ary(func, n, guard) {
|
|
if (guard && isIterateeCall(func, n, guard)) {
|
|
n = null;
|
|
}
|
|
n = (func && n == null) ? func.length : nativeMax(+n || 0, 0);
|
|
return createWrapper(func, ARY_FLAG, null, null, null, null, n);
|
|
}
|
|
|
|
/**
|
|
* Creates a function that invokes `func`, with the `this` binding and arguments
|
|
* of the created function, while it is called less than `n` times. Subsequent
|
|
* calls to the created function return the result of the last `func` invocation.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Function
|
|
* @param {number} n The number of calls at which `func` is no longer invoked.
|
|
* @param {Function} func The function to restrict.
|
|
* @returns {Function} Returns the new restricted function.
|
|
* @example
|
|
*
|
|
* jQuery('#add').on('click', _.before(5, addContactToList));
|
|
* // => allows adding up to 4 contacts to the list
|
|
*/
|
|
function before(n, func) {
|
|
var result;
|
|
if (typeof func != 'function') {
|
|
if (typeof n == 'function') {
|
|
var temp = n;
|
|
n = func;
|
|
func = temp;
|
|
} else {
|
|
throw new TypeError(FUNC_ERROR_TEXT);
|
|
}
|
|
}
|
|
return function() {
|
|
if (--n > 0) {
|
|
result = func.apply(this, arguments);
|
|
} else {
|
|
func = null;
|
|
}
|
|
return result;
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a function that invokes `func` with the `this` binding of `thisArg`
|
|
* and prepends any additional `_.bind` arguments to those provided to the
|
|
* bound function.
|
|
*
|
|
* The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,
|
|
* may be used as a placeholder for partially applied arguments.
|
|
*
|
|
* **Note:** Unlike native `Function#bind` this method does not set the `length`
|
|
* property of bound functions.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Function
|
|
* @param {Function} func The function to bind.
|
|
* @param {*} thisArg The `this` binding of `func`.
|
|
* @param {...*} [partials] The arguments to be partially applied.
|
|
* @returns {Function} Returns the new bound function.
|
|
* @example
|
|
*
|
|
* var greet = function(greeting, punctuation) {
|
|
* return greeting + ' ' + this.user + punctuation;
|
|
* };
|
|
*
|
|
* var object = { 'user': 'fred' };
|
|
*
|
|
* var bound = _.bind(greet, object, 'hi');
|
|
* bound('!');
|
|
* // => 'hi fred!'
|
|
*
|
|
* // using placeholders
|
|
* var bound = _.bind(greet, object, _, '!');
|
|
* bound('hi');
|
|
* // => 'hi fred!'
|
|
*/
|
|
var bind = restParam(function(func, thisArg, partials) {
|
|
var bitmask = BIND_FLAG;
|
|
if (partials.length) {
|
|
var holders = replaceHolders(partials, bind.placeholder);
|
|
bitmask |= PARTIAL_FLAG;
|
|
}
|
|
return createWrapper(func, bitmask, thisArg, partials, holders);
|
|
});
|
|
|
|
/**
|
|
* Binds methods of an object to the object itself, overwriting the existing
|
|
* method. Method names may be specified as individual arguments or as arrays
|
|
* of method names. If no method names are provided all enumerable function
|
|
* properties, own and inherited, of `object` are bound.
|
|
*
|
|
* **Note:** This method does not set the `length` property of bound functions.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Function
|
|
* @param {Object} object The object to bind and assign the bound methods to.
|
|
* @param {...(string|string[])} [methodNames] The object method names to bind,
|
|
* specified as individual method names or arrays of method names.
|
|
* @returns {Object} Returns `object`.
|
|
* @example
|
|
*
|
|
* var view = {
|
|
* 'label': 'docs',
|
|
* 'onClick': function() {
|
|
* console.log('clicked ' + this.label);
|
|
* }
|
|
* };
|
|
*
|
|
* _.bindAll(view);
|
|
* jQuery('#docs').on('click', view.onClick);
|
|
* // => logs 'clicked docs' when the element is clicked
|
|
*/
|
|
var bindAll = restParam(function(object, methodNames) {
|
|
methodNames = methodNames.length ? baseFlatten(methodNames) : functions(object);
|
|
|
|
var index = -1,
|
|
length = methodNames.length;
|
|
|
|
while (++index < length) {
|
|
var key = methodNames[index];
|
|
object[key] = createWrapper(object[key], BIND_FLAG, object);
|
|
}
|
|
return object;
|
|
});
|
|
|
|
/**
|
|
* Creates a function that invokes the method at `object[key]` and prepends
|
|
* any additional `_.bindKey` arguments to those provided to the bound function.
|
|
*
|
|
* This method differs from `_.bind` by allowing bound functions to reference
|
|
* methods that may be redefined or don't yet exist.
|
|
* See [Peter Michaux's article](http://michaux.ca/articles/lazy-function-definition-pattern)
|
|
* for more details.
|
|
*
|
|
* The `_.bindKey.placeholder` value, which defaults to `_` in monolithic
|
|
* builds, may be used as a placeholder for partially applied arguments.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Function
|
|
* @param {Object} object The object the method belongs to.
|
|
* @param {string} key The key of the method.
|
|
* @param {...*} [partials] The arguments to be partially applied.
|
|
* @returns {Function} Returns the new bound function.
|
|
* @example
|
|
*
|
|
* var object = {
|
|
* 'user': 'fred',
|
|
* 'greet': function(greeting, punctuation) {
|
|
* return greeting + ' ' + this.user + punctuation;
|
|
* }
|
|
* };
|
|
*
|
|
* var bound = _.bindKey(object, 'greet', 'hi');
|
|
* bound('!');
|
|
* // => 'hi fred!'
|
|
*
|
|
* object.greet = function(greeting, punctuation) {
|
|
* return greeting + 'ya ' + this.user + punctuation;
|
|
* };
|
|
*
|
|
* bound('!');
|
|
* // => 'hiya fred!'
|
|
*
|
|
* // using placeholders
|
|
* var bound = _.bindKey(object, 'greet', _, '!');
|
|
* bound('hi');
|
|
* // => 'hiya fred!'
|
|
*/
|
|
var bindKey = restParam(function(object, key, partials) {
|
|
var bitmask = BIND_FLAG | BIND_KEY_FLAG;
|
|
if (partials.length) {
|
|
var holders = replaceHolders(partials, bindKey.placeholder);
|
|
bitmask |= PARTIAL_FLAG;
|
|
}
|
|
return createWrapper(key, bitmask, object, partials, holders);
|
|
});
|
|
|
|
/**
|
|
* Creates a function that accepts one or more arguments of `func` that when
|
|
* called either invokes `func` returning its result, if all `func` arguments
|
|
* have been provided, or returns a function that accepts one or more of the
|
|
* remaining `func` arguments, and so on. The arity of `func` may be specified
|
|
* if `func.length` is not sufficient.
|
|
*
|
|
* The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,
|
|
* may be used as a placeholder for provided arguments.
|
|
*
|
|
* **Note:** This method does not set the `length` property of curried functions.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Function
|
|
* @param {Function} func The function to curry.
|
|
* @param {number} [arity=func.length] The arity of `func`.
|
|
* @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
|
|
* @returns {Function} Returns the new curried function.
|
|
* @example
|
|
*
|
|
* var abc = function(a, b, c) {
|
|
* return [a, b, c];
|
|
* };
|
|
*
|
|
* var curried = _.curry(abc);
|
|
*
|
|
* curried(1)(2)(3);
|
|
* // => [1, 2, 3]
|
|
*
|
|
* curried(1, 2)(3);
|
|
* // => [1, 2, 3]
|
|
*
|
|
* curried(1, 2, 3);
|
|
* // => [1, 2, 3]
|
|
*
|
|
* // using placeholders
|
|
* curried(1)(_, 3)(2);
|
|
* // => [1, 2, 3]
|
|
*/
|
|
var curry = createCurry(CURRY_FLAG);
|
|
|
|
/**
|
|
* This method is like `_.curry` except that arguments are applied to `func`
|
|
* in the manner of `_.partialRight` instead of `_.partial`.
|
|
*
|
|
* The `_.curryRight.placeholder` value, which defaults to `_` in monolithic
|
|
* builds, may be used as a placeholder for provided arguments.
|
|
*
|
|
* **Note:** This method does not set the `length` property of curried functions.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Function
|
|
* @param {Function} func The function to curry.
|
|
* @param {number} [arity=func.length] The arity of `func`.
|
|
* @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
|
|
* @returns {Function} Returns the new curried function.
|
|
* @example
|
|
*
|
|
* var abc = function(a, b, c) {
|
|
* return [a, b, c];
|
|
* };
|
|
*
|
|
* var curried = _.curryRight(abc);
|
|
*
|
|
* curried(3)(2)(1);
|
|
* // => [1, 2, 3]
|
|
*
|
|
* curried(2, 3)(1);
|
|
* // => [1, 2, 3]
|
|
*
|
|
* curried(1, 2, 3);
|
|
* // => [1, 2, 3]
|
|
*
|
|
* // using placeholders
|
|
* curried(3)(1, _)(2);
|
|
* // => [1, 2, 3]
|
|
*/
|
|
var curryRight = createCurry(CURRY_RIGHT_FLAG);
|
|
|
|
/**
|
|
* Creates a function that delays invoking `func` until after `wait` milliseconds
|
|
* have elapsed since the last time it was invoked. The created function comes
|
|
* with a `cancel` method to cancel delayed invocations. Provide an options
|
|
* object to indicate that `func` should be invoked on the leading and/or
|
|
* trailing edge of the `wait` timeout. Subsequent calls to the debounced
|
|
* function return the result of the last `func` invocation.
|
|
*
|
|
* **Note:** If `leading` and `trailing` options are `true`, `func` is invoked
|
|
* on the trailing edge of the timeout only if the the debounced function is
|
|
* invoked more than once during the `wait` timeout.
|
|
*
|
|
* See [David Corbacho's article](http://drupalmotion.com/article/debounce-and-throttle-visual-explanation)
|
|
* for details over the differences between `_.debounce` and `_.throttle`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Function
|
|
* @param {Function} func The function to debounce.
|
|
* @param {number} [wait=0] The number of milliseconds to delay.
|
|
* @param {Object} [options] The options object.
|
|
* @param {boolean} [options.leading=false] Specify invoking on the leading
|
|
* edge of the timeout.
|
|
* @param {number} [options.maxWait] The maximum time `func` is allowed to be
|
|
* delayed before it is invoked.
|
|
* @param {boolean} [options.trailing=true] Specify invoking on the trailing
|
|
* edge of the timeout.
|
|
* @returns {Function} Returns the new debounced function.
|
|
* @example
|
|
*
|
|
* // avoid costly calculations while the window size is in flux
|
|
* jQuery(window).on('resize', _.debounce(calculateLayout, 150));
|
|
*
|
|
* // invoke `sendMail` when the click event is fired, debouncing subsequent calls
|
|
* jQuery('#postbox').on('click', _.debounce(sendMail, 300, {
|
|
* 'leading': true,
|
|
* 'trailing': false
|
|
* }));
|
|
*
|
|
* // ensure `batchLog` is invoked once after 1 second of debounced calls
|
|
* var source = new EventSource('/stream');
|
|
* jQuery(source).on('message', _.debounce(batchLog, 250, {
|
|
* 'maxWait': 1000
|
|
* }));
|
|
*
|
|
* // cancel a debounced call
|
|
* var todoChanges = _.debounce(batchLog, 1000);
|
|
* Object.observe(models.todo, todoChanges);
|
|
*
|
|
* Object.observe(models, function(changes) {
|
|
* if (_.find(changes, { 'user': 'todo', 'type': 'delete'})) {
|
|
* todoChanges.cancel();
|
|
* }
|
|
* }, ['delete']);
|
|
*
|
|
* // ...at some point `models.todo` is changed
|
|
* models.todo.completed = true;
|
|
*
|
|
* // ...before 1 second has passed `models.todo` is deleted
|
|
* // which cancels the debounced `todoChanges` call
|
|
* delete models.todo;
|
|
*/
|
|
function debounce(func, wait, options) {
|
|
var args,
|
|
maxTimeoutId,
|
|
result,
|
|
stamp,
|
|
thisArg,
|
|
timeoutId,
|
|
trailingCall,
|
|
lastCalled = 0,
|
|
maxWait = false,
|
|
trailing = true;
|
|
|
|
if (typeof func != 'function') {
|
|
throw new TypeError(FUNC_ERROR_TEXT);
|
|
}
|
|
wait = wait < 0 ? 0 : (+wait || 0);
|
|
if (options === true) {
|
|
var leading = true;
|
|
trailing = false;
|
|
} else if (isObject(options)) {
|
|
leading = options.leading;
|
|
maxWait = 'maxWait' in options && nativeMax(+options.maxWait || 0, wait);
|
|
trailing = 'trailing' in options ? options.trailing : trailing;
|
|
}
|
|
|
|
function cancel() {
|
|
if (timeoutId) {
|
|
clearTimeout(timeoutId);
|
|
}
|
|
if (maxTimeoutId) {
|
|
clearTimeout(maxTimeoutId);
|
|
}
|
|
maxTimeoutId = timeoutId = trailingCall = undefined;
|
|
}
|
|
|
|
function delayed() {
|
|
var remaining = wait - (now() - stamp);
|
|
if (remaining <= 0 || remaining > wait) {
|
|
if (maxTimeoutId) {
|
|
clearTimeout(maxTimeoutId);
|
|
}
|
|
var isCalled = trailingCall;
|
|
maxTimeoutId = timeoutId = trailingCall = undefined;
|
|
if (isCalled) {
|
|
lastCalled = now();
|
|
result = func.apply(thisArg, args);
|
|
if (!timeoutId && !maxTimeoutId) {
|
|
args = thisArg = null;
|
|
}
|
|
}
|
|
} else {
|
|
timeoutId = setTimeout(delayed, remaining);
|
|
}
|
|
}
|
|
|
|
function maxDelayed() {
|
|
if (timeoutId) {
|
|
clearTimeout(timeoutId);
|
|
}
|
|
maxTimeoutId = timeoutId = trailingCall = undefined;
|
|
if (trailing || (maxWait !== wait)) {
|
|
lastCalled = now();
|
|
result = func.apply(thisArg, args);
|
|
if (!timeoutId && !maxTimeoutId) {
|
|
args = thisArg = null;
|
|
}
|
|
}
|
|
}
|
|
|
|
function debounced() {
|
|
args = arguments;
|
|
stamp = now();
|
|
thisArg = this;
|
|
trailingCall = trailing && (timeoutId || !leading);
|
|
|
|
if (maxWait === false) {
|
|
var leadingCall = leading && !timeoutId;
|
|
} else {
|
|
if (!maxTimeoutId && !leading) {
|
|
lastCalled = stamp;
|
|
}
|
|
var remaining = maxWait - (stamp - lastCalled),
|
|
isCalled = remaining <= 0 || remaining > maxWait;
|
|
|
|
if (isCalled) {
|
|
if (maxTimeoutId) {
|
|
maxTimeoutId = clearTimeout(maxTimeoutId);
|
|
}
|
|
lastCalled = stamp;
|
|
result = func.apply(thisArg, args);
|
|
}
|
|
else if (!maxTimeoutId) {
|
|
maxTimeoutId = setTimeout(maxDelayed, remaining);
|
|
}
|
|
}
|
|
if (isCalled && timeoutId) {
|
|
timeoutId = clearTimeout(timeoutId);
|
|
}
|
|
else if (!timeoutId && wait !== maxWait) {
|
|
timeoutId = setTimeout(delayed, wait);
|
|
}
|
|
if (leadingCall) {
|
|
isCalled = true;
|
|
result = func.apply(thisArg, args);
|
|
}
|
|
if (isCalled && !timeoutId && !maxTimeoutId) {
|
|
args = thisArg = null;
|
|
}
|
|
return result;
|
|
}
|
|
debounced.cancel = cancel;
|
|
return debounced;
|
|
}
|
|
|
|
/**
|
|
* Defers invoking the `func` until the current call stack has cleared. Any
|
|
* additional arguments are provided to `func` when it is invoked.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Function
|
|
* @param {Function} func The function to defer.
|
|
* @param {...*} [args] The arguments to invoke the function with.
|
|
* @returns {number} Returns the timer id.
|
|
* @example
|
|
*
|
|
* _.defer(function(text) {
|
|
* console.log(text);
|
|
* }, 'deferred');
|
|
* // logs 'deferred' after one or more milliseconds
|
|
*/
|
|
var defer = restParam(function(func, args) {
|
|
return baseDelay(func, 1, args);
|
|
});
|
|
|
|
/**
|
|
* Invokes `func` after `wait` milliseconds. Any additional arguments are
|
|
* provided to `func` when it is invoked.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Function
|
|
* @param {Function} func The function to delay.
|
|
* @param {number} wait The number of milliseconds to delay invocation.
|
|
* @param {...*} [args] The arguments to invoke the function with.
|
|
* @returns {number} Returns the timer id.
|
|
* @example
|
|
*
|
|
* _.delay(function(text) {
|
|
* console.log(text);
|
|
* }, 1000, 'later');
|
|
* // => logs 'later' after one second
|
|
*/
|
|
var delay = restParam(function(func, wait, args) {
|
|
return baseDelay(func, wait, args);
|
|
});
|
|
|
|
/**
|
|
* Creates a function that returns the result of invoking the provided
|
|
* functions with the `this` binding of the created function, where each
|
|
* successive invocation is supplied the return value of the previous.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Function
|
|
* @param {...Function} [funcs] Functions to invoke.
|
|
* @returns {Function} Returns the new function.
|
|
* @example
|
|
*
|
|
* function square(n) {
|
|
* return n * n;
|
|
* }
|
|
*
|
|
* var addSquare = _.flow(_.add, square);
|
|
* addSquare(1, 2);
|
|
* // => 9
|
|
*/
|
|
var flow = createFlow();
|
|
|
|
/**
|
|
* This method is like `_.flow` except that it creates a function that
|
|
* invokes the provided functions from right to left.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @alias backflow, compose
|
|
* @category Function
|
|
* @param {...Function} [funcs] Functions to invoke.
|
|
* @returns {Function} Returns the new function.
|
|
* @example
|
|
*
|
|
* function square(n) {
|
|
* return n * n;
|
|
* }
|
|
*
|
|
* var addSquare = _.flowRight(square, _.add);
|
|
* addSquare(1, 2);
|
|
* // => 9
|
|
*/
|
|
var flowRight = createFlow(true);
|
|
|
|
/**
|
|
* Creates a function that memoizes the result of `func`. If `resolver` is
|
|
* provided it determines the cache key for storing the result based on the
|
|
* arguments provided to the memoized function. By default, the first argument
|
|
* provided to the memoized function is coerced to a string and used as the
|
|
* cache key. The `func` is invoked with the `this` binding of the memoized
|
|
* function.
|
|
*
|
|
* **Note:** The cache is exposed as the `cache` property on the memoized
|
|
* function. Its creation may be customized by replacing the `_.memoize.Cache`
|
|
* constructor with one whose instances implement the [`Map`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-properties-of-the-map-prototype-object)
|
|
* method interface of `get`, `has`, and `set`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Function
|
|
* @param {Function} func The function to have its output memoized.
|
|
* @param {Function} [resolver] The function to resolve the cache key.
|
|
* @returns {Function} Returns the new memoizing function.
|
|
* @example
|
|
*
|
|
* var upperCase = _.memoize(function(string) {
|
|
* return string.toUpperCase();
|
|
* });
|
|
*
|
|
* upperCase('fred');
|
|
* // => 'FRED'
|
|
*
|
|
* // modifying the result cache
|
|
* upperCase.cache.set('fred', 'BARNEY');
|
|
* upperCase('fred');
|
|
* // => 'BARNEY'
|
|
*
|
|
* // replacing `_.memoize.Cache`
|
|
* var object = { 'user': 'fred' };
|
|
* var other = { 'user': 'barney' };
|
|
* var identity = _.memoize(_.identity);
|
|
*
|
|
* identity(object);
|
|
* // => { 'user': 'fred' }
|
|
* identity(other);
|
|
* // => { 'user': 'fred' }
|
|
*
|
|
* _.memoize.Cache = WeakMap;
|
|
* var identity = _.memoize(_.identity);
|
|
*
|
|
* identity(object);
|
|
* // => { 'user': 'fred' }
|
|
* identity(other);
|
|
* // => { 'user': 'barney' }
|
|
*/
|
|
function memoize(func, resolver) {
|
|
if (typeof func != 'function' || (resolver && typeof resolver != 'function')) {
|
|
throw new TypeError(FUNC_ERROR_TEXT);
|
|
}
|
|
var memoized = function() {
|
|
var args = arguments,
|
|
cache = memoized.cache,
|
|
key = resolver ? resolver.apply(this, args) : args[0];
|
|
|
|
if (cache.has(key)) {
|
|
return cache.get(key);
|
|
}
|
|
var result = func.apply(this, args);
|
|
cache.set(key, result);
|
|
return result;
|
|
};
|
|
memoized.cache = new memoize.Cache;
|
|
return memoized;
|
|
}
|
|
|
|
/**
|
|
* Creates a function that negates the result of the predicate `func`. The
|
|
* `func` predicate is invoked with the `this` binding and arguments of the
|
|
* created function.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Function
|
|
* @param {Function} predicate The predicate to negate.
|
|
* @returns {Function} Returns the new function.
|
|
* @example
|
|
*
|
|
* function isEven(n) {
|
|
* return n % 2 == 0;
|
|
* }
|
|
*
|
|
* _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));
|
|
* // => [1, 3, 5]
|
|
*/
|
|
function negate(predicate) {
|
|
if (typeof predicate != 'function') {
|
|
throw new TypeError(FUNC_ERROR_TEXT);
|
|
}
|
|
return function() {
|
|
return !predicate.apply(this, arguments);
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a function that is restricted to invoking `func` once. Repeat calls
|
|
* to the function return the value of the first call. The `func` is invoked
|
|
* with the `this` binding and arguments of the created function.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Function
|
|
* @param {Function} func The function to restrict.
|
|
* @returns {Function} Returns the new restricted function.
|
|
* @example
|
|
*
|
|
* var initialize = _.once(createApplication);
|
|
* initialize();
|
|
* initialize();
|
|
* // `initialize` invokes `createApplication` once
|
|
*/
|
|
function once(func) {
|
|
return before(func, 2);
|
|
}
|
|
|
|
/**
|
|
* Creates a function that invokes `func` with `partial` arguments prepended
|
|
* to those provided to the new function. This method is like `_.bind` except
|
|
* it does **not** alter the `this` binding.
|
|
*
|
|
* The `_.partial.placeholder` value, which defaults to `_` in monolithic
|
|
* builds, may be used as a placeholder for partially applied arguments.
|
|
*
|
|
* **Note:** This method does not set the `length` property of partially
|
|
* applied functions.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Function
|
|
* @param {Function} func The function to partially apply arguments to.
|
|
* @param {...*} [partials] The arguments to be partially applied.
|
|
* @returns {Function} Returns the new partially applied function.
|
|
* @example
|
|
*
|
|
* var greet = function(greeting, name) {
|
|
* return greeting + ' ' + name;
|
|
* };
|
|
*
|
|
* var sayHelloTo = _.partial(greet, 'hello');
|
|
* sayHelloTo('fred');
|
|
* // => 'hello fred'
|
|
*
|
|
* // using placeholders
|
|
* var greetFred = _.partial(greet, _, 'fred');
|
|
* greetFred('hi');
|
|
* // => 'hi fred'
|
|
*/
|
|
var partial = createPartial(PARTIAL_FLAG);
|
|
|
|
/**
|
|
* This method is like `_.partial` except that partially applied arguments
|
|
* are appended to those provided to the new function.
|
|
*
|
|
* The `_.partialRight.placeholder` value, which defaults to `_` in monolithic
|
|
* builds, may be used as a placeholder for partially applied arguments.
|
|
*
|
|
* **Note:** This method does not set the `length` property of partially
|
|
* applied functions.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Function
|
|
* @param {Function} func The function to partially apply arguments to.
|
|
* @param {...*} [partials] The arguments to be partially applied.
|
|
* @returns {Function} Returns the new partially applied function.
|
|
* @example
|
|
*
|
|
* var greet = function(greeting, name) {
|
|
* return greeting + ' ' + name;
|
|
* };
|
|
*
|
|
* var greetFred = _.partialRight(greet, 'fred');
|
|
* greetFred('hi');
|
|
* // => 'hi fred'
|
|
*
|
|
* // using placeholders
|
|
* var sayHelloTo = _.partialRight(greet, 'hello', _);
|
|
* sayHelloTo('fred');
|
|
* // => 'hello fred'
|
|
*/
|
|
var partialRight = createPartial(PARTIAL_RIGHT_FLAG);
|
|
|
|
/**
|
|
* Creates a function that invokes `func` with arguments arranged according
|
|
* to the specified indexes where the argument value at the first index is
|
|
* provided as the first argument, the argument value at the second index is
|
|
* provided as the second argument, and so on.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Function
|
|
* @param {Function} func The function to rearrange arguments for.
|
|
* @param {...(number|number[])} indexes The arranged argument indexes,
|
|
* specified as individual indexes or arrays of indexes.
|
|
* @returns {Function} Returns the new function.
|
|
* @example
|
|
*
|
|
* var rearged = _.rearg(function(a, b, c) {
|
|
* return [a, b, c];
|
|
* }, 2, 0, 1);
|
|
*
|
|
* rearged('b', 'c', 'a')
|
|
* // => ['a', 'b', 'c']
|
|
*
|
|
* var map = _.rearg(_.map, [1, 0]);
|
|
* map(function(n) {
|
|
* return n * 3;
|
|
* }, [1, 2, 3]);
|
|
* // => [3, 6, 9]
|
|
*/
|
|
var rearg = restParam(function(func, indexes) {
|
|
return createWrapper(func, REARG_FLAG, null, null, null, baseFlatten(indexes));
|
|
});
|
|
|
|
/**
|
|
* Creates a function that invokes `func` with the `this` binding of the
|
|
* created function and arguments from `start` and beyond provided as an array.
|
|
*
|
|
* **Note:** This method is based on the [rest parameter](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions/rest_parameters).
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Function
|
|
* @param {Function} func The function to apply a rest parameter to.
|
|
* @param {number} [start=func.length-1] The start position of the rest parameter.
|
|
* @returns {Function} Returns the new function.
|
|
* @example
|
|
*
|
|
* var say = _.restParam(function(what, names) {
|
|
* return what + ' ' + _.initial(names).join(', ') +
|
|
* (_.size(names) > 1 ? ', & ' : '') + _.last(names);
|
|
* });
|
|
*
|
|
* say('hello', 'fred', 'barney', 'pebbles');
|
|
* // => 'hello fred, barney, & pebbles'
|
|
*/
|
|
function restParam(func, start) {
|
|
if (typeof func != 'function') {
|
|
throw new TypeError(FUNC_ERROR_TEXT);
|
|
}
|
|
start = nativeMax(typeof start == 'undefined' ? (func.length - 1) : (+start || 0), 0);
|
|
return function() {
|
|
var args = arguments,
|
|
index = -1,
|
|
length = nativeMax(args.length - start, 0),
|
|
rest = Array(length);
|
|
|
|
while (++index < length) {
|
|
rest[index] = args[start + index];
|
|
}
|
|
switch (start) {
|
|
case 0: return func.call(this, rest);
|
|
case 1: return func.call(this, args[0], rest);
|
|
case 2: return func.call(this, args[0], args[1], rest);
|
|
}
|
|
var otherArgs = Array(start + 1);
|
|
index = -1;
|
|
while (++index < start) {
|
|
otherArgs[index] = args[index];
|
|
}
|
|
otherArgs[start] = rest;
|
|
return func.apply(this, otherArgs);
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a function that invokes `func` with the `this` binding of the created
|
|
* function and an array of arguments much like [`Function#apply`](https://es5.github.io/#x15.3.4.3).
|
|
*
|
|
* **Note:** This method is based on the [spread operator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_operator).
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Function
|
|
* @param {Function} func The function to spread arguments over.
|
|
* @returns {Function} Returns the new function.
|
|
* @example
|
|
*
|
|
* var say = _.spread(function(who, what) {
|
|
* return who + ' says ' + what;
|
|
* });
|
|
*
|
|
* say(['fred', 'hello']);
|
|
* // => 'fred says hello'
|
|
*
|
|
* // with a Promise
|
|
* var numbers = Promise.all([
|
|
* Promise.resolve(40),
|
|
* Promise.resolve(36)
|
|
* ]);
|
|
*
|
|
* numbers.then(_.spread(function(x, y) {
|
|
* return x + y;
|
|
* }));
|
|
* // => a Promise of 76
|
|
*/
|
|
function spread(func) {
|
|
if (typeof func != 'function') {
|
|
throw new TypeError(FUNC_ERROR_TEXT);
|
|
}
|
|
return function(array) {
|
|
return func.apply(this, array);
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates a function that only invokes `func` at most once per every `wait`
|
|
* milliseconds. The created function comes with a `cancel` method to cancel
|
|
* delayed invocations. Provide an options object to indicate that `func`
|
|
* should be invoked on the leading and/or trailing edge of the `wait` timeout.
|
|
* Subsequent calls to the throttled function return the result of the last
|
|
* `func` call.
|
|
*
|
|
* **Note:** If `leading` and `trailing` options are `true`, `func` is invoked
|
|
* on the trailing edge of the timeout only if the the throttled function is
|
|
* invoked more than once during the `wait` timeout.
|
|
*
|
|
* See [David Corbacho's article](http://drupalmotion.com/article/debounce-and-throttle-visual-explanation)
|
|
* for details over the differences between `_.throttle` and `_.debounce`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Function
|
|
* @param {Function} func The function to throttle.
|
|
* @param {number} [wait=0] The number of milliseconds to throttle invocations to.
|
|
* @param {Object} [options] The options object.
|
|
* @param {boolean} [options.leading=true] Specify invoking on the leading
|
|
* edge of the timeout.
|
|
* @param {boolean} [options.trailing=true] Specify invoking on the trailing
|
|
* edge of the timeout.
|
|
* @returns {Function} Returns the new throttled function.
|
|
* @example
|
|
*
|
|
* // avoid excessively updating the position while scrolling
|
|
* jQuery(window).on('scroll', _.throttle(updatePosition, 100));
|
|
*
|
|
* // invoke `renewToken` when the click event is fired, but not more than once every 5 minutes
|
|
* jQuery('.interactive').on('click', _.throttle(renewToken, 300000, {
|
|
* 'trailing': false
|
|
* }));
|
|
*
|
|
* // cancel a trailing throttled call
|
|
* jQuery(window).on('popstate', throttled.cancel);
|
|
*/
|
|
function throttle(func, wait, options) {
|
|
var leading = true,
|
|
trailing = true;
|
|
|
|
if (typeof func != 'function') {
|
|
throw new TypeError(FUNC_ERROR_TEXT);
|
|
}
|
|
if (options === false) {
|
|
leading = false;
|
|
} else if (isObject(options)) {
|
|
leading = 'leading' in options ? !!options.leading : leading;
|
|
trailing = 'trailing' in options ? !!options.trailing : trailing;
|
|
}
|
|
debounceOptions.leading = leading;
|
|
debounceOptions.maxWait = +wait;
|
|
debounceOptions.trailing = trailing;
|
|
return debounce(func, wait, debounceOptions);
|
|
}
|
|
|
|
/**
|
|
* Creates a function that provides `value` to the wrapper function as its
|
|
* first argument. Any additional arguments provided to the function are
|
|
* appended to those provided to the wrapper function. The wrapper is invoked
|
|
* with the `this` binding of the created function.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Function
|
|
* @param {*} value The value to wrap.
|
|
* @param {Function} wrapper The wrapper function.
|
|
* @returns {Function} Returns the new function.
|
|
* @example
|
|
*
|
|
* var p = _.wrap(_.escape, function(func, text) {
|
|
* return '<p>' + func(text) + '</p>';
|
|
* });
|
|
*
|
|
* p('fred, barney, & pebbles');
|
|
* // => '<p>fred, barney, & pebbles</p>'
|
|
*/
|
|
function wrap(value, wrapper) {
|
|
wrapper = wrapper == null ? identity : wrapper;
|
|
return createWrapper(wrapper, PARTIAL_FLAG, null, [value], []);
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
* Creates a clone of `value`. If `isDeep` is `true` nested objects are cloned,
|
|
* otherwise they are assigned by reference. If `customizer` is provided it is
|
|
* invoked to produce the cloned values. If `customizer` returns `undefined`
|
|
* cloning is handled by the method instead. The `customizer` is bound to
|
|
* `thisArg` and invoked with two argument; (value [, index|key, object]).
|
|
*
|
|
* **Note:** This method is loosely based on the
|
|
* [structured clone algorithm](http://www.w3.org/TR/html5/infrastructure.html#internal-structured-cloning-algorithm).
|
|
* The enumerable properties of `arguments` objects and objects created by
|
|
* constructors other than `Object` are cloned to plain `Object` objects. An
|
|
* empty object is returned for uncloneable values such as functions, DOM nodes,
|
|
* Maps, Sets, and WeakMaps.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to clone.
|
|
* @param {boolean} [isDeep] Specify a deep clone.
|
|
* @param {Function} [customizer] The function to customize cloning values.
|
|
* @param {*} [thisArg] The `this` binding of `customizer`.
|
|
* @returns {*} Returns the cloned value.
|
|
* @example
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney' },
|
|
* { 'user': 'fred' }
|
|
* ];
|
|
*
|
|
* var shallow = _.clone(users);
|
|
* shallow[0] === users[0];
|
|
* // => true
|
|
*
|
|
* var deep = _.clone(users, true);
|
|
* deep[0] === users[0];
|
|
* // => false
|
|
*
|
|
* // using a customizer callback
|
|
* var el = _.clone(document.body, function(value) {
|
|
* if (_.isElement(value)) {
|
|
* return value.cloneNode(false);
|
|
* }
|
|
* });
|
|
*
|
|
* el === document.body
|
|
* // => false
|
|
* el.nodeName
|
|
* // => BODY
|
|
* el.childNodes.length;
|
|
* // => 0
|
|
*/
|
|
function clone(value, isDeep, customizer, thisArg) {
|
|
if (isDeep && typeof isDeep != 'boolean' && isIterateeCall(value, isDeep, customizer)) {
|
|
isDeep = false;
|
|
}
|
|
else if (typeof isDeep == 'function') {
|
|
thisArg = customizer;
|
|
customizer = isDeep;
|
|
isDeep = false;
|
|
}
|
|
customizer = typeof customizer == 'function' && bindCallback(customizer, thisArg, 1);
|
|
return baseClone(value, isDeep, customizer);
|
|
}
|
|
|
|
/**
|
|
* Creates a deep clone of `value`. If `customizer` is provided it is invoked
|
|
* to produce the cloned values. If `customizer` returns `undefined` cloning
|
|
* is handled by the method instead. The `customizer` is bound to `thisArg`
|
|
* and invoked with two argument; (value [, index|key, object]).
|
|
*
|
|
* **Note:** This method is loosely based on the
|
|
* [structured clone algorithm](http://www.w3.org/TR/html5/infrastructure.html#internal-structured-cloning-algorithm).
|
|
* The enumerable properties of `arguments` objects and objects created by
|
|
* constructors other than `Object` are cloned to plain `Object` objects. An
|
|
* empty object is returned for uncloneable values such as functions, DOM nodes,
|
|
* Maps, Sets, and WeakMaps.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to deep clone.
|
|
* @param {Function} [customizer] The function to customize cloning values.
|
|
* @param {*} [thisArg] The `this` binding of `customizer`.
|
|
* @returns {*} Returns the deep cloned value.
|
|
* @example
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney' },
|
|
* { 'user': 'fred' }
|
|
* ];
|
|
*
|
|
* var deep = _.cloneDeep(users);
|
|
* deep[0] === users[0];
|
|
* // => false
|
|
*
|
|
* // using a customizer callback
|
|
* var el = _.cloneDeep(document.body, function(value) {
|
|
* if (_.isElement(value)) {
|
|
* return value.cloneNode(true);
|
|
* }
|
|
* });
|
|
*
|
|
* el === document.body
|
|
* // => false
|
|
* el.nodeName
|
|
* // => BODY
|
|
* el.childNodes.length;
|
|
* // => 20
|
|
*/
|
|
function cloneDeep(value, customizer, thisArg) {
|
|
customizer = typeof customizer == 'function' && bindCallback(customizer, thisArg, 1);
|
|
return baseClone(value, true, customizer);
|
|
}
|
|
|
|
/**
|
|
* Checks if `value` is classified as an `arguments` object.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
|
|
* @example
|
|
*
|
|
* _.isArguments(function() { return arguments; }());
|
|
* // => true
|
|
*
|
|
* _.isArguments([1, 2, 3]);
|
|
* // => false
|
|
*/
|
|
function isArguments(value) {
|
|
var length = isObjectLike(value) ? value.length : undefined;
|
|
return isLength(length) && objToString.call(value) == argsTag;
|
|
}
|
|
|
|
/**
|
|
* Checks if `value` is classified as an `Array` object.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
|
|
* @example
|
|
*
|
|
* _.isArray([1, 2, 3]);
|
|
* // => true
|
|
*
|
|
* _.isArray(function() { return arguments; }());
|
|
* // => false
|
|
*/
|
|
var isArray = nativeIsArray || function(value) {
|
|
return isObjectLike(value) && isLength(value.length) && objToString.call(value) == arrayTag;
|
|
};
|
|
|
|
/**
|
|
* Checks if `value` is classified as a boolean primitive or object.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
|
|
* @example
|
|
*
|
|
* _.isBoolean(false);
|
|
* // => true
|
|
*
|
|
* _.isBoolean(null);
|
|
* // => false
|
|
*/
|
|
function isBoolean(value) {
|
|
return value === true || value === false || (isObjectLike(value) && objToString.call(value) == boolTag);
|
|
}
|
|
|
|
/**
|
|
* Checks if `value` is classified as a `Date` object.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
|
|
* @example
|
|
*
|
|
* _.isDate(new Date);
|
|
* // => true
|
|
*
|
|
* _.isDate('Mon April 23 2012');
|
|
* // => false
|
|
*/
|
|
function isDate(value) {
|
|
return isObjectLike(value) && objToString.call(value) == dateTag;
|
|
}
|
|
|
|
/**
|
|
* Checks if `value` is a DOM element.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.
|
|
* @example
|
|
*
|
|
* _.isElement(document.body);
|
|
* // => true
|
|
*
|
|
* _.isElement('<body>');
|
|
* // => false
|
|
*/
|
|
function isElement(value) {
|
|
return !!value && value.nodeType === 1 && isObjectLike(value) &&
|
|
(objToString.call(value).indexOf('Element') > -1);
|
|
}
|
|
// Fallback for environments without DOM support.
|
|
if (!support.dom) {
|
|
isElement = function(value) {
|
|
return !!value && value.nodeType === 1 && isObjectLike(value) && !isPlainObject(value);
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Checks if `value` is empty. A value is considered empty unless it is an
|
|
* `arguments` object, array, string, or jQuery-like collection with a length
|
|
* greater than `0` or an object with own enumerable properties.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {Array|Object|string} value The value to inspect.
|
|
* @returns {boolean} Returns `true` if `value` is empty, else `false`.
|
|
* @example
|
|
*
|
|
* _.isEmpty(null);
|
|
* // => true
|
|
*
|
|
* _.isEmpty(true);
|
|
* // => true
|
|
*
|
|
* _.isEmpty(1);
|
|
* // => true
|
|
*
|
|
* _.isEmpty([1, 2, 3]);
|
|
* // => false
|
|
*
|
|
* _.isEmpty({ 'a': 1 });
|
|
* // => false
|
|
*/
|
|
function isEmpty(value) {
|
|
if (value == null) {
|
|
return true;
|
|
}
|
|
var length = value.length;
|
|
if (isLength(length) && (isArray(value) || isString(value) || isArguments(value) ||
|
|
(isObjectLike(value) && isFunction(value.splice)))) {
|
|
return !length;
|
|
}
|
|
return !keys(value).length;
|
|
}
|
|
|
|
/**
|
|
* Performs a deep comparison between two values to determine if they are
|
|
* equivalent. If `customizer` is provided it is invoked to compare values.
|
|
* If `customizer` returns `undefined` comparisons are handled by the method
|
|
* instead. The `customizer` is bound to `thisArg` and invoked with three
|
|
* arguments: (value, other [, index|key]).
|
|
*
|
|
* **Note:** This method supports comparing arrays, booleans, `Date` objects,
|
|
* numbers, `Object` objects, regexes, and strings. Objects are compared by
|
|
* their own, not inherited, enumerable properties. Functions and DOM nodes
|
|
* are **not** supported. Provide a customizer function to extend support
|
|
* for comparing other values.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to compare.
|
|
* @param {*} other The other value to compare.
|
|
* @param {Function} [customizer] The function to customize comparing values.
|
|
* @param {*} [thisArg] The `this` binding of `customizer`.
|
|
* @returns {boolean} Returns `true` if the values are equivalent, else `false`.
|
|
* @example
|
|
*
|
|
* var object = { 'user': 'fred' };
|
|
* var other = { 'user': 'fred' };
|
|
*
|
|
* object == other;
|
|
* // => false
|
|
*
|
|
* _.isEqual(object, other);
|
|
* // => true
|
|
*
|
|
* // using a customizer callback
|
|
* var array = ['hello', 'goodbye'];
|
|
* var other = ['hi', 'goodbye'];
|
|
*
|
|
* _.isEqual(array, other, function(value, other) {
|
|
* if (_.every([value, other], RegExp.prototype.test, /^h(?:i|ello)$/)) {
|
|
* return true;
|
|
* }
|
|
* });
|
|
* // => true
|
|
*/
|
|
function isEqual(value, other, customizer, thisArg) {
|
|
customizer = typeof customizer == 'function' && bindCallback(customizer, thisArg, 3);
|
|
if (!customizer && isStrictComparable(value) && isStrictComparable(other)) {
|
|
return value === other;
|
|
}
|
|
var result = customizer ? customizer(value, other) : undefined;
|
|
return typeof result == 'undefined' ? baseIsEqual(value, other, customizer) : !!result;
|
|
}
|
|
|
|
/**
|
|
* Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,
|
|
* `SyntaxError`, `TypeError`, or `URIError` object.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is an error object, else `false`.
|
|
* @example
|
|
*
|
|
* _.isError(new Error);
|
|
* // => true
|
|
*
|
|
* _.isError(Error);
|
|
* // => false
|
|
*/
|
|
function isError(value) {
|
|
return isObjectLike(value) && typeof value.message == 'string' && objToString.call(value) == errorTag;
|
|
}
|
|
|
|
/**
|
|
* Checks if `value` is a finite primitive number.
|
|
*
|
|
* **Note:** This method is based on [`Number.isFinite`](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-number.isfinite).
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is a finite number, else `false`.
|
|
* @example
|
|
*
|
|
* _.isFinite(10);
|
|
* // => true
|
|
*
|
|
* _.isFinite('10');
|
|
* // => false
|
|
*
|
|
* _.isFinite(true);
|
|
* // => false
|
|
*
|
|
* _.isFinite(Object(10));
|
|
* // => false
|
|
*
|
|
* _.isFinite(Infinity);
|
|
* // => false
|
|
*/
|
|
var isFinite = nativeNumIsFinite || function(value) {
|
|
return typeof value == 'number' && nativeIsFinite(value);
|
|
};
|
|
|
|
/**
|
|
* Checks if `value` is classified as a `Function` object.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
|
|
* @example
|
|
*
|
|
* _.isFunction(_);
|
|
* // => true
|
|
*
|
|
* _.isFunction(/abc/);
|
|
* // => false
|
|
*/
|
|
var isFunction = !(baseIsFunction(/x/) || (Uint8Array && !baseIsFunction(Uint8Array))) ? baseIsFunction : function(value) {
|
|
// The use of `Object#toString` avoids issues with the `typeof` operator
|
|
// in older versions of Chrome and Safari which return 'function' for regexes
|
|
// and Safari 8 equivalents which return 'object' for typed array constructors.
|
|
return objToString.call(value) == funcTag;
|
|
};
|
|
|
|
/**
|
|
* Checks if `value` is the [language type](https://es5.github.io/#x8) of `Object`.
|
|
* (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is an object, else `false`.
|
|
* @example
|
|
*
|
|
* _.isObject({});
|
|
* // => true
|
|
*
|
|
* _.isObject([1, 2, 3]);
|
|
* // => true
|
|
*
|
|
* _.isObject(1);
|
|
* // => false
|
|
*/
|
|
function isObject(value) {
|
|
// Avoid a V8 JIT bug in Chrome 19-20.
|
|
// See https://code.google.com/p/v8/issues/detail?id=2291 for more details.
|
|
var type = typeof value;
|
|
return type == 'function' || (!!value && type == 'object');
|
|
}
|
|
|
|
/**
|
|
* Performs a deep comparison between `object` and `source` to determine if
|
|
* `object` contains equivalent property values. If `customizer` is provided
|
|
* it is invoked to compare values. If `customizer` returns `undefined`
|
|
* comparisons are handled by the method instead. The `customizer` is bound
|
|
* to `thisArg` and invoked with three arguments: (value, other, index|key).
|
|
*
|
|
* **Note:** This method supports comparing properties of arrays, booleans,
|
|
* `Date` objects, numbers, `Object` objects, regexes, and strings. Functions
|
|
* and DOM nodes are **not** supported. Provide a customizer function to extend
|
|
* support for comparing other values.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {Object} object The object to inspect.
|
|
* @param {Object} source The object of property values to match.
|
|
* @param {Function} [customizer] The function to customize comparing values.
|
|
* @param {*} [thisArg] The `this` binding of `customizer`.
|
|
* @returns {boolean} Returns `true` if `object` is a match, else `false`.
|
|
* @example
|
|
*
|
|
* var object = { 'user': 'fred', 'age': 40 };
|
|
*
|
|
* _.isMatch(object, { 'age': 40 });
|
|
* // => true
|
|
*
|
|
* _.isMatch(object, { 'age': 36 });
|
|
* // => false
|
|
*
|
|
* // using a customizer callback
|
|
* var object = { 'greeting': 'hello' };
|
|
* var source = { 'greeting': 'hi' };
|
|
*
|
|
* _.isMatch(object, source, function(value, other) {
|
|
* return _.every([value, other], RegExp.prototype.test, /^h(?:i|ello)$/) || undefined;
|
|
* });
|
|
* // => true
|
|
*/
|
|
function isMatch(object, source, customizer, thisArg) {
|
|
var props = keys(source),
|
|
length = props.length;
|
|
|
|
if (!length) {
|
|
return true;
|
|
}
|
|
if (object == null) {
|
|
return false;
|
|
}
|
|
customizer = typeof customizer == 'function' && bindCallback(customizer, thisArg, 3);
|
|
if (!customizer && length == 1) {
|
|
var key = props[0],
|
|
value = source[key];
|
|
|
|
if (isStrictComparable(value)) {
|
|
return value === object[key] && (typeof value != 'undefined' || (key in toObject(object)));
|
|
}
|
|
}
|
|
var values = Array(length),
|
|
strictCompareFlags = Array(length);
|
|
|
|
while (length--) {
|
|
value = values[length] = source[props[length]];
|
|
strictCompareFlags[length] = isStrictComparable(value);
|
|
}
|
|
return baseIsMatch(toObject(object), props, values, strictCompareFlags, customizer);
|
|
}
|
|
|
|
/**
|
|
* Checks if `value` is `NaN`.
|
|
*
|
|
* **Note:** This method is not the same as [`isNaN`](https://es5.github.io/#x15.1.2.4)
|
|
* which returns `true` for `undefined` and other non-numeric values.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
|
|
* @example
|
|
*
|
|
* _.isNaN(NaN);
|
|
* // => true
|
|
*
|
|
* _.isNaN(new Number(NaN));
|
|
* // => true
|
|
*
|
|
* isNaN(undefined);
|
|
* // => true
|
|
*
|
|
* _.isNaN(undefined);
|
|
* // => false
|
|
*/
|
|
function isNaN(value) {
|
|
// An `NaN` primitive is the only value that is not equal to itself.
|
|
// Perform the `toStringTag` check first to avoid errors with some host objects in IE.
|
|
return isNumber(value) && value != +value;
|
|
}
|
|
|
|
/**
|
|
* Checks if `value` is a native function.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is a native function, else `false`.
|
|
* @example
|
|
*
|
|
* _.isNative(Array.prototype.push);
|
|
* // => true
|
|
*
|
|
* _.isNative(_);
|
|
* // => false
|
|
*/
|
|
function isNative(value) {
|
|
if (value == null) {
|
|
return false;
|
|
}
|
|
if (objToString.call(value) == funcTag) {
|
|
return reNative.test(fnToString.call(value));
|
|
}
|
|
return isObjectLike(value) && reHostCtor.test(value);
|
|
}
|
|
|
|
/**
|
|
* Checks if `value` is `null`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is `null`, else `false`.
|
|
* @example
|
|
*
|
|
* _.isNull(null);
|
|
* // => true
|
|
*
|
|
* _.isNull(void 0);
|
|
* // => false
|
|
*/
|
|
function isNull(value) {
|
|
return value === null;
|
|
}
|
|
|
|
/**
|
|
* Checks if `value` is classified as a `Number` primitive or object.
|
|
*
|
|
* **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are classified
|
|
* as numbers, use the `_.isFinite` method.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
|
|
* @example
|
|
*
|
|
* _.isNumber(8.4);
|
|
* // => true
|
|
*
|
|
* _.isNumber(NaN);
|
|
* // => true
|
|
*
|
|
* _.isNumber('8.4');
|
|
* // => false
|
|
*/
|
|
function isNumber(value) {
|
|
return typeof value == 'number' || (isObjectLike(value) && objToString.call(value) == numberTag);
|
|
}
|
|
|
|
/**
|
|
* Checks if `value` is a plain object, that is, an object created by the
|
|
* `Object` constructor or one with a `[[Prototype]]` of `null`.
|
|
*
|
|
* **Note:** This method assumes objects created by the `Object` constructor
|
|
* have no inherited enumerable properties.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
|
|
* @example
|
|
*
|
|
* function Foo() {
|
|
* this.a = 1;
|
|
* }
|
|
*
|
|
* _.isPlainObject(new Foo);
|
|
* // => false
|
|
*
|
|
* _.isPlainObject([1, 2, 3]);
|
|
* // => false
|
|
*
|
|
* _.isPlainObject({ 'x': 0, 'y': 0 });
|
|
* // => true
|
|
*
|
|
* _.isPlainObject(Object.create(null));
|
|
* // => true
|
|
*/
|
|
var isPlainObject = !getPrototypeOf ? shimIsPlainObject : function(value) {
|
|
if (!(value && objToString.call(value) == objectTag)) {
|
|
return false;
|
|
}
|
|
var valueOf = value.valueOf,
|
|
objProto = isNative(valueOf) && (objProto = getPrototypeOf(valueOf)) && getPrototypeOf(objProto);
|
|
|
|
return objProto
|
|
? (value == objProto || getPrototypeOf(value) == objProto)
|
|
: shimIsPlainObject(value);
|
|
};
|
|
|
|
/**
|
|
* Checks if `value` is classified as a `RegExp` object.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
|
|
* @example
|
|
*
|
|
* _.isRegExp(/abc/);
|
|
* // => true
|
|
*
|
|
* _.isRegExp('/abc/');
|
|
* // => false
|
|
*/
|
|
function isRegExp(value) {
|
|
return (isObjectLike(value) && objToString.call(value) == regexpTag) || false;
|
|
}
|
|
|
|
/**
|
|
* Checks if `value` is classified as a `String` primitive or object.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
|
|
* @example
|
|
*
|
|
* _.isString('abc');
|
|
* // => true
|
|
*
|
|
* _.isString(1);
|
|
* // => false
|
|
*/
|
|
function isString(value) {
|
|
return typeof value == 'string' || (isObjectLike(value) && objToString.call(value) == stringTag);
|
|
}
|
|
|
|
/**
|
|
* Checks if `value` is classified as a typed array.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is correctly classified, else `false`.
|
|
* @example
|
|
*
|
|
* _.isTypedArray(new Uint8Array);
|
|
* // => true
|
|
*
|
|
* _.isTypedArray([]);
|
|
* // => false
|
|
*/
|
|
function isTypedArray(value) {
|
|
return isObjectLike(value) && isLength(value.length) && !!typedArrayTags[objToString.call(value)];
|
|
}
|
|
|
|
/**
|
|
* Checks if `value` is `undefined`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to check.
|
|
* @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.
|
|
* @example
|
|
*
|
|
* _.isUndefined(void 0);
|
|
* // => true
|
|
*
|
|
* _.isUndefined(null);
|
|
* // => false
|
|
*/
|
|
function isUndefined(value) {
|
|
return typeof value == 'undefined';
|
|
}
|
|
|
|
/**
|
|
* Converts `value` to an array.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to convert.
|
|
* @returns {Array} Returns the converted array.
|
|
* @example
|
|
*
|
|
* (function() {
|
|
* return _.toArray(arguments).slice(1);
|
|
* }(1, 2, 3));
|
|
* // => [2, 3]
|
|
*/
|
|
function toArray(value) {
|
|
var length = value ? value.length : 0;
|
|
if (!isLength(length)) {
|
|
return values(value);
|
|
}
|
|
if (!length) {
|
|
return [];
|
|
}
|
|
return arrayCopy(value);
|
|
}
|
|
|
|
/**
|
|
* Converts `value` to a plain object flattening inherited enumerable
|
|
* properties of `value` to own properties of the plain object.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Lang
|
|
* @param {*} value The value to convert.
|
|
* @returns {Object} Returns the converted plain object.
|
|
* @example
|
|
*
|
|
* function Foo() {
|
|
* this.b = 2;
|
|
* }
|
|
*
|
|
* Foo.prototype.c = 3;
|
|
*
|
|
* _.assign({ 'a': 1 }, new Foo);
|
|
* // => { 'a': 1, 'b': 2 }
|
|
*
|
|
* _.assign({ 'a': 1 }, _.toPlainObject(new Foo));
|
|
* // => { 'a': 1, 'b': 2, 'c': 3 }
|
|
*/
|
|
function toPlainObject(value) {
|
|
return baseCopy(value, keysIn(value));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
* Assigns own enumerable properties of source object(s) to the destination
|
|
* object. Subsequent sources overwrite property assignments of previous sources.
|
|
* If `customizer` is provided it is invoked to produce the assigned values.
|
|
* The `customizer` is bound to `thisArg` and invoked with five arguments:
|
|
* (objectValue, sourceValue, key, object, source).
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @alias extend
|
|
* @category Object
|
|
* @param {Object} object The destination object.
|
|
* @param {...Object} [sources] The source objects.
|
|
* @param {Function} [customizer] The function to customize assigning values.
|
|
* @param {*} [thisArg] The `this` binding of `customizer`.
|
|
* @returns {Object} Returns `object`.
|
|
* @example
|
|
*
|
|
* _.assign({ 'user': 'barney' }, { 'age': 40 }, { 'user': 'fred' });
|
|
* // => { 'user': 'fred', 'age': 40 }
|
|
*
|
|
* // using a customizer callback
|
|
* var defaults = _.partialRight(_.assign, function(value, other) {
|
|
* return typeof value == 'undefined' ? other : value;
|
|
* });
|
|
*
|
|
* defaults({ 'user': 'barney' }, { 'age': 36 }, { 'user': 'fred' });
|
|
* // => { 'user': 'barney', 'age': 36 }
|
|
*/
|
|
var assign = createAssigner(baseAssign);
|
|
|
|
/**
|
|
* Creates an object that inherits from the given `prototype` object. If a
|
|
* `properties` object is provided its own enumerable properties are assigned
|
|
* to the created object.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Object
|
|
* @param {Object} prototype The object to inherit from.
|
|
* @param {Object} [properties] The properties to assign to the object.
|
|
* @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
|
|
* @returns {Object} Returns the new object.
|
|
* @example
|
|
*
|
|
* function Shape() {
|
|
* this.x = 0;
|
|
* this.y = 0;
|
|
* }
|
|
*
|
|
* function Circle() {
|
|
* Shape.call(this);
|
|
* }
|
|
*
|
|
* Circle.prototype = _.create(Shape.prototype, {
|
|
* 'constructor': Circle
|
|
* });
|
|
*
|
|
* var circle = new Circle;
|
|
* circle instanceof Circle;
|
|
* // => true
|
|
*
|
|
* circle instanceof Shape;
|
|
* // => true
|
|
*/
|
|
function create(prototype, properties, guard) {
|
|
var result = baseCreate(prototype);
|
|
if (guard && isIterateeCall(prototype, properties, guard)) {
|
|
properties = null;
|
|
}
|
|
return properties ? baseCopy(properties, result, keys(properties)) : result;
|
|
}
|
|
|
|
/**
|
|
* Assigns own enumerable properties of source object(s) to the destination
|
|
* object for all destination properties that resolve to `undefined`. Once a
|
|
* property is set, additional values of the same property are ignored.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Object
|
|
* @param {Object} object The destination object.
|
|
* @param {...Object} [sources] The source objects.
|
|
* @returns {Object} Returns `object`.
|
|
* @example
|
|
*
|
|
* _.defaults({ 'user': 'barney' }, { 'age': 36 }, { 'user': 'fred' });
|
|
* // => { 'user': 'barney', 'age': 36 }
|
|
*/
|
|
var defaults = restParam(function(args) {
|
|
var object = args[0];
|
|
if (object == null) {
|
|
return object;
|
|
}
|
|
args.push(assignDefaults);
|
|
return assign.apply(undefined, args);
|
|
});
|
|
|
|
/**
|
|
* This method is like `_.find` except that it returns the key of the first
|
|
* element `predicate` returns truthy for instead of the element itself.
|
|
*
|
|
* If a property name is provided for `predicate` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `predicate` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Object
|
|
* @param {Object} object The object to search.
|
|
* @param {Function|Object|string} [predicate=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `predicate`.
|
|
* @returns {string|undefined} Returns the key of the matched element, else `undefined`.
|
|
* @example
|
|
*
|
|
* var users = {
|
|
* 'barney': { 'age': 36, 'active': true },
|
|
* 'fred': { 'age': 40, 'active': false },
|
|
* 'pebbles': { 'age': 1, 'active': true }
|
|
* };
|
|
*
|
|
* _.findKey(users, function(chr) {
|
|
* return chr.age < 40;
|
|
* });
|
|
* // => 'barney' (iteration order is not guaranteed)
|
|
*
|
|
* // using the `_.matches` callback shorthand
|
|
* _.findKey(users, { 'age': 1, 'active': true });
|
|
* // => 'pebbles'
|
|
*
|
|
* // using the `_.matchesProperty` callback shorthand
|
|
* _.findKey(users, 'active', false);
|
|
* // => 'fred'
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.findKey(users, 'active');
|
|
* // => 'barney'
|
|
*/
|
|
var findKey = createFindKey(baseForOwn);
|
|
|
|
/**
|
|
* This method is like `_.findKey` except that it iterates over elements of
|
|
* a collection in the opposite order.
|
|
*
|
|
* If a property name is provided for `predicate` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `predicate` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Object
|
|
* @param {Object} object The object to search.
|
|
* @param {Function|Object|string} [predicate=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `predicate`.
|
|
* @returns {string|undefined} Returns the key of the matched element, else `undefined`.
|
|
* @example
|
|
*
|
|
* var users = {
|
|
* 'barney': { 'age': 36, 'active': true },
|
|
* 'fred': { 'age': 40, 'active': false },
|
|
* 'pebbles': { 'age': 1, 'active': true }
|
|
* };
|
|
*
|
|
* _.findLastKey(users, function(chr) {
|
|
* return chr.age < 40;
|
|
* });
|
|
* // => returns `pebbles` assuming `_.findKey` returns `barney`
|
|
*
|
|
* // using the `_.matches` callback shorthand
|
|
* _.findLastKey(users, { 'age': 36, 'active': true });
|
|
* // => 'barney'
|
|
*
|
|
* // using the `_.matchesProperty` callback shorthand
|
|
* _.findLastKey(users, 'active', false);
|
|
* // => 'fred'
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.findLastKey(users, 'active');
|
|
* // => 'pebbles'
|
|
*/
|
|
var findLastKey = createFindKey(baseForOwnRight);
|
|
|
|
/**
|
|
* Iterates over own and inherited enumerable properties of an object invoking
|
|
* `iteratee` for each property. The `iteratee` is bound to `thisArg` and invoked
|
|
* with three arguments: (value, key, object). Iterator functions may exit
|
|
* iteration early by explicitly returning `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Object
|
|
* @param {Object} object The object to iterate over.
|
|
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {Object} Returns `object`.
|
|
* @example
|
|
*
|
|
* function Foo() {
|
|
* this.a = 1;
|
|
* this.b = 2;
|
|
* }
|
|
*
|
|
* Foo.prototype.c = 3;
|
|
*
|
|
* _.forIn(new Foo, function(value, key) {
|
|
* console.log(key);
|
|
* });
|
|
* // => logs 'a', 'b', and 'c' (iteration order is not guaranteed)
|
|
*/
|
|
var forIn = createForIn(baseFor);
|
|
|
|
/**
|
|
* This method is like `_.forIn` except that it iterates over properties of
|
|
* `object` in the opposite order.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Object
|
|
* @param {Object} object The object to iterate over.
|
|
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {Object} Returns `object`.
|
|
* @example
|
|
*
|
|
* function Foo() {
|
|
* this.a = 1;
|
|
* this.b = 2;
|
|
* }
|
|
*
|
|
* Foo.prototype.c = 3;
|
|
*
|
|
* _.forInRight(new Foo, function(value, key) {
|
|
* console.log(key);
|
|
* });
|
|
* // => logs 'c', 'b', and 'a' assuming `_.forIn ` logs 'a', 'b', and 'c'
|
|
*/
|
|
var forInRight = createForIn(baseForRight);
|
|
|
|
/**
|
|
* Iterates over own enumerable properties of an object invoking `iteratee`
|
|
* for each property. The `iteratee` is bound to `thisArg` and invoked with
|
|
* three arguments: (value, key, object). Iterator functions may exit iteration
|
|
* early by explicitly returning `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Object
|
|
* @param {Object} object The object to iterate over.
|
|
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {Object} Returns `object`.
|
|
* @example
|
|
*
|
|
* function Foo() {
|
|
* this.a = 1;
|
|
* this.b = 2;
|
|
* }
|
|
*
|
|
* Foo.prototype.c = 3;
|
|
*
|
|
* _.forOwn(new Foo, function(value, key) {
|
|
* console.log(key);
|
|
* });
|
|
* // => logs 'a' and 'b' (iteration order is not guaranteed)
|
|
*/
|
|
var forOwn = createForOwn(baseForOwn);
|
|
|
|
/**
|
|
* This method is like `_.forOwn` except that it iterates over properties of
|
|
* `object` in the opposite order.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Object
|
|
* @param {Object} object The object to iterate over.
|
|
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {Object} Returns `object`.
|
|
* @example
|
|
*
|
|
* function Foo() {
|
|
* this.a = 1;
|
|
* this.b = 2;
|
|
* }
|
|
*
|
|
* Foo.prototype.c = 3;
|
|
*
|
|
* _.forOwnRight(new Foo, function(value, key) {
|
|
* console.log(key);
|
|
* });
|
|
* // => logs 'b' and 'a' assuming `_.forOwn` logs 'a' and 'b'
|
|
*/
|
|
var forOwnRight = createForOwn(baseForOwnRight);
|
|
|
|
/**
|
|
* Creates an array of function property names from all enumerable properties,
|
|
* own and inherited, of `object`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @alias methods
|
|
* @category Object
|
|
* @param {Object} object The object to inspect.
|
|
* @returns {Array} Returns the new array of property names.
|
|
* @example
|
|
*
|
|
* _.functions(_);
|
|
* // => ['after', 'ary', 'assign', ...]
|
|
*/
|
|
function functions(object) {
|
|
return baseFunctions(object, keysIn(object));
|
|
}
|
|
|
|
/**
|
|
* Checks if `key` exists as a direct property of `object` instead of an
|
|
* inherited property.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Object
|
|
* @param {Object} object The object to inspect.
|
|
* @param {string} key The key to check.
|
|
* @returns {boolean} Returns `true` if `key` is a direct property, else `false`.
|
|
* @example
|
|
*
|
|
* var object = { 'a': 1, 'b': 2, 'c': 3 };
|
|
*
|
|
* _.has(object, 'b');
|
|
* // => true
|
|
*/
|
|
function has(object, key) {
|
|
return object ? hasOwnProperty.call(object, key) : false;
|
|
}
|
|
|
|
/**
|
|
* Creates an object composed of the inverted keys and values of `object`.
|
|
* If `object` contains duplicate values, subsequent values overwrite property
|
|
* assignments of previous values unless `multiValue` is `true`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Object
|
|
* @param {Object} object The object to invert.
|
|
* @param {boolean} [multiValue] Allow multiple values per key.
|
|
* @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
|
|
* @returns {Object} Returns the new inverted object.
|
|
* @example
|
|
*
|
|
* var object = { 'a': 1, 'b': 2, 'c': 1 };
|
|
*
|
|
* _.invert(object);
|
|
* // => { '1': 'c', '2': 'b' }
|
|
*
|
|
* // with `multiValue`
|
|
* _.invert(object, true);
|
|
* // => { '1': ['a', 'c'], '2': ['b'] }
|
|
*/
|
|
function invert(object, multiValue, guard) {
|
|
if (guard && isIterateeCall(object, multiValue, guard)) {
|
|
multiValue = null;
|
|
}
|
|
var index = -1,
|
|
props = keys(object),
|
|
length = props.length,
|
|
result = {};
|
|
|
|
while (++index < length) {
|
|
var key = props[index],
|
|
value = object[key];
|
|
|
|
if (multiValue) {
|
|
if (hasOwnProperty.call(result, value)) {
|
|
result[value].push(key);
|
|
} else {
|
|
result[value] = [key];
|
|
}
|
|
}
|
|
else {
|
|
result[value] = key;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Creates an array of the own enumerable property names of `object`.
|
|
*
|
|
* **Note:** Non-object values are coerced to objects. See the
|
|
* [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.keys)
|
|
* for more details.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Object
|
|
* @param {Object} object The object to inspect.
|
|
* @returns {Array} Returns the array of property names.
|
|
* @example
|
|
*
|
|
* function Foo() {
|
|
* this.a = 1;
|
|
* this.b = 2;
|
|
* }
|
|
*
|
|
* Foo.prototype.c = 3;
|
|
*
|
|
* _.keys(new Foo);
|
|
* // => ['a', 'b'] (iteration order is not guaranteed)
|
|
*
|
|
* _.keys('hi');
|
|
* // => ['0', '1']
|
|
*/
|
|
var keys = !nativeKeys ? shimKeys : function(object) {
|
|
if (object) {
|
|
var Ctor = object.constructor,
|
|
length = object.length;
|
|
}
|
|
if ((typeof Ctor == 'function' && Ctor.prototype === object) ||
|
|
(typeof object != 'function' && (length && isLength(length)))) {
|
|
return shimKeys(object);
|
|
}
|
|
return isObject(object) ? nativeKeys(object) : [];
|
|
};
|
|
|
|
/**
|
|
* Creates an array of the own and inherited enumerable property names of `object`.
|
|
*
|
|
* **Note:** Non-object values are coerced to objects.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Object
|
|
* @param {Object} object The object to inspect.
|
|
* @returns {Array} Returns the array of property names.
|
|
* @example
|
|
*
|
|
* function Foo() {
|
|
* this.a = 1;
|
|
* this.b = 2;
|
|
* }
|
|
*
|
|
* Foo.prototype.c = 3;
|
|
*
|
|
* _.keysIn(new Foo);
|
|
* // => ['a', 'b', 'c'] (iteration order is not guaranteed)
|
|
*/
|
|
function keysIn(object) {
|
|
if (object == null) {
|
|
return [];
|
|
}
|
|
if (!isObject(object)) {
|
|
object = Object(object);
|
|
}
|
|
var length = object.length;
|
|
length = (length && isLength(length) &&
|
|
(isArray(object) || (support.nonEnumArgs && isArguments(object))) && length) || 0;
|
|
|
|
var Ctor = object.constructor,
|
|
index = -1,
|
|
isProto = typeof Ctor == 'function' && Ctor.prototype === object,
|
|
result = Array(length),
|
|
skipIndexes = length > 0;
|
|
|
|
while (++index < length) {
|
|
result[index] = (index + '');
|
|
}
|
|
for (var key in object) {
|
|
if (!(skipIndexes && isIndex(key, length)) &&
|
|
!(key == 'constructor' && (isProto || !hasOwnProperty.call(object, key)))) {
|
|
result.push(key);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Creates an object with the same keys as `object` and values generated by
|
|
* running each own enumerable property of `object` through `iteratee`. The
|
|
* iteratee function is bound to `thisArg` and invoked with three arguments:
|
|
* (value, key, object).
|
|
*
|
|
* If a property name is provided for `iteratee` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `iteratee` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Object
|
|
* @param {Object} object The object to iterate over.
|
|
* @param {Function|Object|string} [iteratee=_.identity] The function invoked
|
|
* per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {Object} Returns the new mapped object.
|
|
* @example
|
|
*
|
|
* _.mapValues({ 'a': 1, 'b': 2 }, function(n) {
|
|
* return n * 3;
|
|
* });
|
|
* // => { 'a': 3, 'b': 6 }
|
|
*
|
|
* var users = {
|
|
* 'fred': { 'user': 'fred', 'age': 40 },
|
|
* 'pebbles': { 'user': 'pebbles', 'age': 1 }
|
|
* };
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.mapValues(users, 'age');
|
|
* // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
|
|
*/
|
|
function mapValues(object, iteratee, thisArg) {
|
|
var result = {};
|
|
iteratee = getCallback(iteratee, thisArg, 3);
|
|
|
|
baseForOwn(object, function(value, key, object) {
|
|
result[key] = iteratee(value, key, object);
|
|
});
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Recursively merges own enumerable properties of the source object(s), that
|
|
* don't resolve to `undefined` into the destination object. Subsequent sources
|
|
* overwrite property assignments of previous sources. If `customizer` is
|
|
* provided it is invoked to produce the merged values of the destination and
|
|
* source properties. If `customizer` returns `undefined` merging is handled
|
|
* by the method instead. The `customizer` is bound to `thisArg` and invoked
|
|
* with five arguments: (objectValue, sourceValue, key, object, source).
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Object
|
|
* @param {Object} object The destination object.
|
|
* @param {...Object} [sources] The source objects.
|
|
* @param {Function} [customizer] The function to customize merging properties.
|
|
* @param {*} [thisArg] The `this` binding of `customizer`.
|
|
* @returns {Object} Returns `object`.
|
|
* @example
|
|
*
|
|
* var users = {
|
|
* 'data': [{ 'user': 'barney' }, { 'user': 'fred' }]
|
|
* };
|
|
*
|
|
* var ages = {
|
|
* 'data': [{ 'age': 36 }, { 'age': 40 }]
|
|
* };
|
|
*
|
|
* _.merge(users, ages);
|
|
* // => { 'data': [{ 'user': 'barney', 'age': 36 }, { 'user': 'fred', 'age': 40 }] }
|
|
*
|
|
* // using a customizer callback
|
|
* var object = {
|
|
* 'fruits': ['apple'],
|
|
* 'vegetables': ['beet']
|
|
* };
|
|
*
|
|
* var other = {
|
|
* 'fruits': ['banana'],
|
|
* 'vegetables': ['carrot']
|
|
* };
|
|
*
|
|
* _.merge(object, other, function(a, b) {
|
|
* if (_.isArray(a)) {
|
|
* return a.concat(b);
|
|
* }
|
|
* });
|
|
* // => { 'fruits': ['apple', 'banana'], 'vegetables': ['beet', 'carrot'] }
|
|
*/
|
|
var merge = createAssigner(baseMerge);
|
|
|
|
/**
|
|
* The opposite of `_.pick`; this method creates an object composed of the
|
|
* own and inherited enumerable properties of `object` that are not omitted.
|
|
* Property names may be specified as individual arguments or as arrays of
|
|
* property names. If `predicate` is provided it is invoked for each property
|
|
* of `object` omitting the properties `predicate` returns truthy for. The
|
|
* predicate is bound to `thisArg` and invoked with three arguments:
|
|
* (value, key, object).
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Object
|
|
* @param {Object} object The source object.
|
|
* @param {Function|...(string|string[])} [predicate] The function invoked per
|
|
* iteration or property names to omit, specified as individual property
|
|
* names or arrays of property names.
|
|
* @param {*} [thisArg] The `this` binding of `predicate`.
|
|
* @returns {Object} Returns the new object.
|
|
* @example
|
|
*
|
|
* var object = { 'user': 'fred', 'age': 40 };
|
|
*
|
|
* _.omit(object, 'age');
|
|
* // => { 'user': 'fred' }
|
|
*
|
|
* _.omit(object, _.isNumber);
|
|
* // => { 'user': 'fred' }
|
|
*/
|
|
var omit = restParam(function(object, props) {
|
|
if (object == null) {
|
|
return {};
|
|
}
|
|
if (typeof props[0] != 'function') {
|
|
var props = arrayMap(baseFlatten(props), String);
|
|
return pickByArray(object, baseDifference(keysIn(object), props));
|
|
}
|
|
var predicate = bindCallback(props[0], props[1], 3);
|
|
return pickByCallback(object, function(value, key, object) {
|
|
return !predicate(value, key, object);
|
|
});
|
|
});
|
|
|
|
/**
|
|
* Creates a two dimensional array of the key-value pairs for `object`,
|
|
* e.g. `[[key1, value1], [key2, value2]]`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Object
|
|
* @param {Object} object The object to inspect.
|
|
* @returns {Array} Returns the new array of key-value pairs.
|
|
* @example
|
|
*
|
|
* _.pairs({ 'barney': 36, 'fred': 40 });
|
|
* // => [['barney', 36], ['fred', 40]] (iteration order is not guaranteed)
|
|
*/
|
|
function pairs(object) {
|
|
var index = -1,
|
|
props = keys(object),
|
|
length = props.length,
|
|
result = Array(length);
|
|
|
|
while (++index < length) {
|
|
var key = props[index];
|
|
result[index] = [key, object[key]];
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Creates an object composed of the picked `object` properties. Property
|
|
* names may be specified as individual arguments or as arrays of property
|
|
* names. If `predicate` is provided it is invoked for each property of `object`
|
|
* picking the properties `predicate` returns truthy for. The predicate is
|
|
* bound to `thisArg` and invoked with three arguments: (value, key, object).
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Object
|
|
* @param {Object} object The source object.
|
|
* @param {Function|...(string|string[])} [predicate] The function invoked per
|
|
* iteration or property names to pick, specified as individual property
|
|
* names or arrays of property names.
|
|
* @param {*} [thisArg] The `this` binding of `predicate`.
|
|
* @returns {Object} Returns the new object.
|
|
* @example
|
|
*
|
|
* var object = { 'user': 'fred', 'age': 40 };
|
|
*
|
|
* _.pick(object, 'user');
|
|
* // => { 'user': 'fred' }
|
|
*
|
|
* _.pick(object, _.isString);
|
|
* // => { 'user': 'fred' }
|
|
*/
|
|
var pick = restParam(function(object, props) {
|
|
if (object == null) {
|
|
return {};
|
|
}
|
|
return typeof props[0] == 'function'
|
|
? pickByCallback(object, bindCallback(props[0], props[1], 3))
|
|
: pickByArray(object, baseFlatten(props));
|
|
});
|
|
|
|
/**
|
|
* Resolves the value of property `key` on `object`. If the value of `key` is
|
|
* a function it is invoked with the `this` binding of `object` and its result
|
|
* is returned, else the property value is returned. If the property value is
|
|
* `undefined` the `defaultValue` is used in its place.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Object
|
|
* @param {Object} object The object to query.
|
|
* @param {string} key The key of the property to resolve.
|
|
* @param {*} [defaultValue] The value returned if the property value
|
|
* resolves to `undefined`.
|
|
* @returns {*} Returns the resolved value.
|
|
* @example
|
|
*
|
|
* var object = { 'user': 'fred', 'age': _.constant(40) };
|
|
*
|
|
* _.result(object, 'user');
|
|
* // => 'fred'
|
|
*
|
|
* _.result(object, 'age');
|
|
* // => 40
|
|
*
|
|
* _.result(object, 'status', 'busy');
|
|
* // => 'busy'
|
|
*
|
|
* _.result(object, 'status', _.constant('busy'));
|
|
* // => 'busy'
|
|
*/
|
|
function result(object, key, defaultValue) {
|
|
var value = object == null ? undefined : object[key];
|
|
if (typeof value == 'undefined') {
|
|
value = defaultValue;
|
|
}
|
|
return isFunction(value) ? value.call(object) : value;
|
|
}
|
|
|
|
/**
|
|
* An alternative to `_.reduce`; this method transforms `object` to a new
|
|
* `accumulator` object which is the result of running each of its own enumerable
|
|
* properties through `iteratee`, with each invocation potentially mutating
|
|
* the `accumulator` object. The `iteratee` is bound to `thisArg` and invoked
|
|
* with four arguments: (accumulator, value, key, object). Iterator functions
|
|
* may exit iteration early by explicitly returning `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Object
|
|
* @param {Array|Object} object The object to iterate over.
|
|
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
|
|
* @param {*} [accumulator] The custom accumulator value.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {*} Returns the accumulated value.
|
|
* @example
|
|
*
|
|
* _.transform([2, 3, 4], function(result, n) {
|
|
* result.push(n *= n);
|
|
* return n % 2 == 0;
|
|
* });
|
|
* // => [4, 9]
|
|
*
|
|
* _.transform({ 'a': 1, 'b': 2 }, function(result, n, key) {
|
|
* result[key] = n * 3;
|
|
* });
|
|
* // => { 'a': 3, 'b': 6 }
|
|
*/
|
|
function transform(object, iteratee, accumulator, thisArg) {
|
|
var isArr = isArray(object) || isTypedArray(object);
|
|
iteratee = getCallback(iteratee, thisArg, 4);
|
|
|
|
if (accumulator == null) {
|
|
if (isArr || isObject(object)) {
|
|
var Ctor = object.constructor;
|
|
if (isArr) {
|
|
accumulator = isArray(object) ? new Ctor : [];
|
|
} else {
|
|
accumulator = baseCreate(isFunction(Ctor) && Ctor.prototype);
|
|
}
|
|
} else {
|
|
accumulator = {};
|
|
}
|
|
}
|
|
(isArr ? arrayEach : baseForOwn)(object, function(value, index, object) {
|
|
return iteratee(accumulator, value, index, object);
|
|
});
|
|
return accumulator;
|
|
}
|
|
|
|
/**
|
|
* Creates an array of the own enumerable property values of `object`.
|
|
*
|
|
* **Note:** Non-object values are coerced to objects.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Object
|
|
* @param {Object} object The object to query.
|
|
* @returns {Array} Returns the array of property values.
|
|
* @example
|
|
*
|
|
* function Foo() {
|
|
* this.a = 1;
|
|
* this.b = 2;
|
|
* }
|
|
*
|
|
* Foo.prototype.c = 3;
|
|
*
|
|
* _.values(new Foo);
|
|
* // => [1, 2] (iteration order is not guaranteed)
|
|
*
|
|
* _.values('hi');
|
|
* // => ['h', 'i']
|
|
*/
|
|
function values(object) {
|
|
return baseValues(object, keys(object));
|
|
}
|
|
|
|
/**
|
|
* Creates an array of the own and inherited enumerable property values
|
|
* of `object`.
|
|
*
|
|
* **Note:** Non-object values are coerced to objects.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Object
|
|
* @param {Object} object The object to query.
|
|
* @returns {Array} Returns the array of property values.
|
|
* @example
|
|
*
|
|
* function Foo() {
|
|
* this.a = 1;
|
|
* this.b = 2;
|
|
* }
|
|
*
|
|
* Foo.prototype.c = 3;
|
|
*
|
|
* _.valuesIn(new Foo);
|
|
* // => [1, 2, 3] (iteration order is not guaranteed)
|
|
*/
|
|
function valuesIn(object) {
|
|
return baseValues(object, keysIn(object));
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
* Checks if `n` is between `start` and up to but not including, `end`. If
|
|
* `end` is not specified it is set to `start` with `start` then set to `0`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Number
|
|
* @param {number} n The number to check.
|
|
* @param {number} [start=0] The start of the range.
|
|
* @param {number} end The end of the range.
|
|
* @returns {boolean} Returns `true` if `n` is in the range, else `false`.
|
|
* @example
|
|
*
|
|
* _.inRange(3, 2, 4);
|
|
* // => true
|
|
*
|
|
* _.inRange(4, 8);
|
|
* // => true
|
|
*
|
|
* _.inRange(4, 2);
|
|
* // => false
|
|
*
|
|
* _.inRange(2, 2);
|
|
* // => false
|
|
*
|
|
* _.inRange(1.2, 2);
|
|
* // => true
|
|
*
|
|
* _.inRange(5.2, 4);
|
|
* // => false
|
|
*/
|
|
function inRange(value, start, end) {
|
|
start = +start || 0;
|
|
if (typeof end === 'undefined') {
|
|
end = start;
|
|
start = 0;
|
|
} else {
|
|
end = +end || 0;
|
|
}
|
|
return value >= start && value < end;
|
|
}
|
|
|
|
/**
|
|
* Produces a random number between `min` and `max` (inclusive). If only one
|
|
* argument is provided a number between `0` and the given number is returned.
|
|
* If `floating` is `true`, or either `min` or `max` are floats, a floating-point
|
|
* number is returned instead of an integer.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Number
|
|
* @param {number} [min=0] The minimum possible value.
|
|
* @param {number} [max=1] The maximum possible value.
|
|
* @param {boolean} [floating] Specify returning a floating-point number.
|
|
* @returns {number} Returns the random number.
|
|
* @example
|
|
*
|
|
* _.random(0, 5);
|
|
* // => an integer between 0 and 5
|
|
*
|
|
* _.random(5);
|
|
* // => also an integer between 0 and 5
|
|
*
|
|
* _.random(5, true);
|
|
* // => a floating-point number between 0 and 5
|
|
*
|
|
* _.random(1.2, 5.2);
|
|
* // => a floating-point number between 1.2 and 5.2
|
|
*/
|
|
function random(min, max, floating) {
|
|
if (floating && isIterateeCall(min, max, floating)) {
|
|
max = floating = null;
|
|
}
|
|
var noMin = min == null,
|
|
noMax = max == null;
|
|
|
|
if (floating == null) {
|
|
if (noMax && typeof min == 'boolean') {
|
|
floating = min;
|
|
min = 1;
|
|
}
|
|
else if (typeof max == 'boolean') {
|
|
floating = max;
|
|
noMax = true;
|
|
}
|
|
}
|
|
if (noMin && noMax) {
|
|
max = 1;
|
|
noMax = false;
|
|
}
|
|
min = +min || 0;
|
|
if (noMax) {
|
|
max = min;
|
|
min = 0;
|
|
} else {
|
|
max = +max || 0;
|
|
}
|
|
if (floating || min % 1 || max % 1) {
|
|
var rand = nativeRandom();
|
|
return nativeMin(min + (rand * (max - min + parseFloat('1e-' + ((rand + '').length - 1)))), max);
|
|
}
|
|
return baseRandom(min, max);
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
* Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} [string=''] The string to convert.
|
|
* @returns {string} Returns the camel cased string.
|
|
* @example
|
|
*
|
|
* _.camelCase('Foo Bar');
|
|
* // => 'fooBar'
|
|
*
|
|
* _.camelCase('--foo-bar');
|
|
* // => 'fooBar'
|
|
*
|
|
* _.camelCase('__foo_bar__');
|
|
* // => 'fooBar'
|
|
*/
|
|
var camelCase = createCompounder(function(result, word, index) {
|
|
word = word.toLowerCase();
|
|
return result + (index ? (word.charAt(0).toUpperCase() + word.slice(1)) : word);
|
|
});
|
|
|
|
/**
|
|
* Capitalizes the first character of `string`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} [string=''] The string to capitalize.
|
|
* @returns {string} Returns the capitalized string.
|
|
* @example
|
|
*
|
|
* _.capitalize('fred');
|
|
* // => 'Fred'
|
|
*/
|
|
function capitalize(string) {
|
|
string = baseToString(string);
|
|
return string && (string.charAt(0).toUpperCase() + string.slice(1));
|
|
}
|
|
|
|
/**
|
|
* Deburrs `string` by converting [latin-1 supplementary letters](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)
|
|
* to basic latin letters and removing [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} [string=''] The string to deburr.
|
|
* @returns {string} Returns the deburred string.
|
|
* @example
|
|
*
|
|
* _.deburr('déjà vu');
|
|
* // => 'deja vu'
|
|
*/
|
|
function deburr(string) {
|
|
string = baseToString(string);
|
|
return string && string.replace(reLatin1, deburrLetter).replace(reComboMarks, '');
|
|
}
|
|
|
|
/**
|
|
* Checks if `string` ends with the given target string.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} [string=''] The string to search.
|
|
* @param {string} [target] The string to search for.
|
|
* @param {number} [position=string.length] The position to search from.
|
|
* @returns {boolean} Returns `true` if `string` ends with `target`, else `false`.
|
|
* @example
|
|
*
|
|
* _.endsWith('abc', 'c');
|
|
* // => true
|
|
*
|
|
* _.endsWith('abc', 'b');
|
|
* // => false
|
|
*
|
|
* _.endsWith('abc', 'b', 2);
|
|
* // => true
|
|
*/
|
|
function endsWith(string, target, position) {
|
|
string = baseToString(string);
|
|
target = (target + '');
|
|
|
|
var length = string.length;
|
|
position = typeof position == 'undefined'
|
|
? length
|
|
: nativeMin(position < 0 ? 0 : (+position || 0), length);
|
|
|
|
position -= target.length;
|
|
return position >= 0 && string.indexOf(target, position) == position;
|
|
}
|
|
|
|
/**
|
|
* Converts the characters "&", "<", ">", '"', "'", and "\`", in `string` to
|
|
* their corresponding HTML entities.
|
|
*
|
|
* **Note:** No other characters are escaped. To escape additional characters
|
|
* use a third-party library like [_he_](https://mths.be/he).
|
|
*
|
|
* Though the ">" character is escaped for symmetry, characters like
|
|
* ">" and "/" don't require escaping in HTML and have no special meaning
|
|
* unless they're part of a tag or unquoted attribute value.
|
|
* See [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)
|
|
* (under "semi-related fun fact") for more details.
|
|
*
|
|
* Backticks are escaped because in Internet Explorer < 9, they can break out
|
|
* of attribute values or HTML comments. See [#102](https://html5sec.org/#102),
|
|
* [#108](https://html5sec.org/#108), and [#133](https://html5sec.org/#133) of
|
|
* the [HTML5 Security Cheatsheet](https://html5sec.org/) for more details.
|
|
*
|
|
* When working with HTML you should always [quote attribute values](http://wonko.com/post/html-escaping)
|
|
* to reduce XSS vectors.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} [string=''] The string to escape.
|
|
* @returns {string} Returns the escaped string.
|
|
* @example
|
|
*
|
|
* _.escape('fred, barney, & pebbles');
|
|
* // => 'fred, barney, & pebbles'
|
|
*/
|
|
function escape(string) {
|
|
// Reset `lastIndex` because in IE < 9 `String#replace` does not.
|
|
string = baseToString(string);
|
|
return (string && reHasUnescapedHtml.test(string))
|
|
? string.replace(reUnescapedHtml, escapeHtmlChar)
|
|
: string;
|
|
}
|
|
|
|
/**
|
|
* Escapes the `RegExp` special characters "\", "/", "^", "$", ".", "|", "?",
|
|
* "*", "+", "(", ")", "[", "]", "{" and "}" in `string`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} [string=''] The string to escape.
|
|
* @returns {string} Returns the escaped string.
|
|
* @example
|
|
*
|
|
* _.escapeRegExp('[lodash](https://lodash.com/)');
|
|
* // => '\[lodash\]\(https:\/\/lodash\.com\/\)'
|
|
*/
|
|
function escapeRegExp(string) {
|
|
string = baseToString(string);
|
|
return (string && reHasRegExpChars.test(string))
|
|
? string.replace(reRegExpChars, '\\$&')
|
|
: string;
|
|
}
|
|
|
|
/**
|
|
* Converts `string` to [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} [string=''] The string to convert.
|
|
* @returns {string} Returns the kebab cased string.
|
|
* @example
|
|
*
|
|
* _.kebabCase('Foo Bar');
|
|
* // => 'foo-bar'
|
|
*
|
|
* _.kebabCase('fooBar');
|
|
* // => 'foo-bar'
|
|
*
|
|
* _.kebabCase('__foo_bar__');
|
|
* // => 'foo-bar'
|
|
*/
|
|
var kebabCase = createCompounder(function(result, word, index) {
|
|
return result + (index ? '-' : '') + word.toLowerCase();
|
|
});
|
|
|
|
/**
|
|
* Pads `string` on the left and right sides if it is shorter than `length`.
|
|
* Padding characters are truncated if they can't be evenly divided by `length`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} [string=''] The string to pad.
|
|
* @param {number} [length=0] The padding length.
|
|
* @param {string} [chars=' '] The string used as padding.
|
|
* @returns {string} Returns the padded string.
|
|
* @example
|
|
*
|
|
* _.pad('abc', 8);
|
|
* // => ' abc '
|
|
*
|
|
* _.pad('abc', 8, '_-');
|
|
* // => '_-abc_-_'
|
|
*
|
|
* _.pad('abc', 3);
|
|
* // => 'abc'
|
|
*/
|
|
function pad(string, length, chars) {
|
|
string = baseToString(string);
|
|
length = +length;
|
|
|
|
var strLength = string.length;
|
|
if (strLength >= length || !nativeIsFinite(length)) {
|
|
return string;
|
|
}
|
|
var mid = (length - strLength) / 2,
|
|
leftLength = floor(mid),
|
|
rightLength = ceil(mid);
|
|
|
|
chars = createPadding('', rightLength, chars);
|
|
return chars.slice(0, leftLength) + string + chars;
|
|
}
|
|
|
|
/**
|
|
* Pads `string` on the left side if it is shorter than `length`. Padding
|
|
* characters are truncated if they exceed `length`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} [string=''] The string to pad.
|
|
* @param {number} [length=0] The padding length.
|
|
* @param {string} [chars=' '] The string used as padding.
|
|
* @returns {string} Returns the padded string.
|
|
* @example
|
|
*
|
|
* _.padLeft('abc', 6);
|
|
* // => ' abc'
|
|
*
|
|
* _.padLeft('abc', 6, '_-');
|
|
* // => '_-_abc'
|
|
*
|
|
* _.padLeft('abc', 3);
|
|
* // => 'abc'
|
|
*/
|
|
var padLeft = createPadDir();
|
|
|
|
/**
|
|
* Pads `string` on the right side if it is shorter than `length`. Padding
|
|
* characters are truncated if they exceed `length`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} [string=''] The string to pad.
|
|
* @param {number} [length=0] The padding length.
|
|
* @param {string} [chars=' '] The string used as padding.
|
|
* @returns {string} Returns the padded string.
|
|
* @example
|
|
*
|
|
* _.padRight('abc', 6);
|
|
* // => 'abc '
|
|
*
|
|
* _.padRight('abc', 6, '_-');
|
|
* // => 'abc_-_'
|
|
*
|
|
* _.padRight('abc', 3);
|
|
* // => 'abc'
|
|
*/
|
|
var padRight = createPadDir(true);
|
|
|
|
/**
|
|
* Converts `string` to an integer of the specified radix. If `radix` is
|
|
* `undefined` or `0`, a `radix` of `10` is used unless `value` is a hexadecimal,
|
|
* in which case a `radix` of `16` is used.
|
|
*
|
|
* **Note:** This method aligns with the [ES5 implementation](https://es5.github.io/#E)
|
|
* of `parseInt`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} string The string to convert.
|
|
* @param {number} [radix] The radix to interpret `value` by.
|
|
* @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
|
|
* @returns {number} Returns the converted integer.
|
|
* @example
|
|
*
|
|
* _.parseInt('08');
|
|
* // => 8
|
|
*
|
|
* _.map(['6', '08', '10'], _.parseInt);
|
|
* // => [6, 8, 10]
|
|
*/
|
|
function parseInt(string, radix, guard) {
|
|
if (guard && isIterateeCall(string, radix, guard)) {
|
|
radix = 0;
|
|
}
|
|
return nativeParseInt(string, radix);
|
|
}
|
|
// Fallback for environments with pre-ES5 implementations.
|
|
if (nativeParseInt(whitespace + '08') != 8) {
|
|
parseInt = function(string, radix, guard) {
|
|
// Firefox < 21 and Opera < 15 follow ES3 for `parseInt`.
|
|
// Chrome fails to trim leading <BOM> whitespace characters.
|
|
// See https://code.google.com/p/v8/issues/detail?id=3109 for more details.
|
|
if (guard ? isIterateeCall(string, radix, guard) : radix == null) {
|
|
radix = 0;
|
|
} else if (radix) {
|
|
radix = +radix;
|
|
}
|
|
string = trim(string);
|
|
return nativeParseInt(string, radix || (reHexPrefix.test(string) ? 16 : 10));
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Repeats the given string `n` times.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} [string=''] The string to repeat.
|
|
* @param {number} [n=0] The number of times to repeat the string.
|
|
* @returns {string} Returns the repeated string.
|
|
* @example
|
|
*
|
|
* _.repeat('*', 3);
|
|
* // => '***'
|
|
*
|
|
* _.repeat('abc', 2);
|
|
* // => 'abcabc'
|
|
*
|
|
* _.repeat('abc', 0);
|
|
* // => ''
|
|
*/
|
|
function repeat(string, n) {
|
|
var result = '';
|
|
string = baseToString(string);
|
|
n = +n;
|
|
if (n < 1 || !string || !nativeIsFinite(n)) {
|
|
return result;
|
|
}
|
|
// Leverage the exponentiation by squaring algorithm for a faster repeat.
|
|
// See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.
|
|
do {
|
|
if (n % 2) {
|
|
result += string;
|
|
}
|
|
n = floor(n / 2);
|
|
string += string;
|
|
} while (n);
|
|
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Converts `string` to [snake case](https://en.wikipedia.org/wiki/Snake_case).
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} [string=''] The string to convert.
|
|
* @returns {string} Returns the snake cased string.
|
|
* @example
|
|
*
|
|
* _.snakeCase('Foo Bar');
|
|
* // => 'foo_bar'
|
|
*
|
|
* _.snakeCase('fooBar');
|
|
* // => 'foo_bar'
|
|
*
|
|
* _.snakeCase('--foo-bar');
|
|
* // => 'foo_bar'
|
|
*/
|
|
var snakeCase = createCompounder(function(result, word, index) {
|
|
return result + (index ? '_' : '') + word.toLowerCase();
|
|
});
|
|
|
|
/**
|
|
* Converts `string` to [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage).
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} [string=''] The string to convert.
|
|
* @returns {string} Returns the start cased string.
|
|
* @example
|
|
*
|
|
* _.startCase('--foo-bar');
|
|
* // => 'Foo Bar'
|
|
*
|
|
* _.startCase('fooBar');
|
|
* // => 'Foo Bar'
|
|
*
|
|
* _.startCase('__foo_bar__');
|
|
* // => 'Foo Bar'
|
|
*/
|
|
var startCase = createCompounder(function(result, word, index) {
|
|
return result + (index ? ' ' : '') + (word.charAt(0).toUpperCase() + word.slice(1));
|
|
});
|
|
|
|
/**
|
|
* Checks if `string` starts with the given target string.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} [string=''] The string to search.
|
|
* @param {string} [target] The string to search for.
|
|
* @param {number} [position=0] The position to search from.
|
|
* @returns {boolean} Returns `true` if `string` starts with `target`, else `false`.
|
|
* @example
|
|
*
|
|
* _.startsWith('abc', 'a');
|
|
* // => true
|
|
*
|
|
* _.startsWith('abc', 'b');
|
|
* // => false
|
|
*
|
|
* _.startsWith('abc', 'b', 1);
|
|
* // => true
|
|
*/
|
|
function startsWith(string, target, position) {
|
|
string = baseToString(string);
|
|
position = position == null
|
|
? 0
|
|
: nativeMin(position < 0 ? 0 : (+position || 0), string.length);
|
|
|
|
return string.lastIndexOf(target, position) == position;
|
|
}
|
|
|
|
/**
|
|
* Creates a compiled template function that can interpolate data properties
|
|
* in "interpolate" delimiters, HTML-escape interpolated data properties in
|
|
* "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data
|
|
* properties may be accessed as free variables in the template. If a setting
|
|
* object is provided it takes precedence over `_.templateSettings` values.
|
|
*
|
|
* **Note:** In the development build `_.template` utilizes
|
|
* [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)
|
|
* for easier debugging.
|
|
*
|
|
* For more information on precompiling templates see
|
|
* [lodash's custom builds documentation](https://lodash.com/custom-builds).
|
|
*
|
|
* For more information on Chrome extension sandboxes see
|
|
* [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} [string=''] The template string.
|
|
* @param {Object} [options] The options object.
|
|
* @param {RegExp} [options.escape] The HTML "escape" delimiter.
|
|
* @param {RegExp} [options.evaluate] The "evaluate" delimiter.
|
|
* @param {Object} [options.imports] An object to import into the template as free variables.
|
|
* @param {RegExp} [options.interpolate] The "interpolate" delimiter.
|
|
* @param {string} [options.sourceURL] The sourceURL of the template's compiled source.
|
|
* @param {string} [options.variable] The data object variable name.
|
|
* @param- {Object} [otherOptions] Enables the legacy `options` param signature.
|
|
* @returns {Function} Returns the compiled template function.
|
|
* @example
|
|
*
|
|
* // using the "interpolate" delimiter to create a compiled template
|
|
* var compiled = _.template('hello <%= user %>!');
|
|
* compiled({ 'user': 'fred' });
|
|
* // => 'hello fred!'
|
|
*
|
|
* // using the HTML "escape" delimiter to escape data property values
|
|
* var compiled = _.template('<b><%- value %></b>');
|
|
* compiled({ 'value': '<script>' });
|
|
* // => '<b><script></b>'
|
|
*
|
|
* // using the "evaluate" delimiter to execute JavaScript and generate HTML
|
|
* var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>');
|
|
* compiled({ 'users': ['fred', 'barney'] });
|
|
* // => '<li>fred</li><li>barney</li>'
|
|
*
|
|
* // using the internal `print` function in "evaluate" delimiters
|
|
* var compiled = _.template('<% print("hello " + user); %>!');
|
|
* compiled({ 'user': 'barney' });
|
|
* // => 'hello barney!'
|
|
*
|
|
* // using the ES delimiter as an alternative to the default "interpolate" delimiter
|
|
* var compiled = _.template('hello ${ user }!');
|
|
* compiled({ 'user': 'pebbles' });
|
|
* // => 'hello pebbles!'
|
|
*
|
|
* // using custom template delimiters
|
|
* _.templateSettings.interpolate = /{{([\s\S]+?)}}/g;
|
|
* var compiled = _.template('hello {{ user }}!');
|
|
* compiled({ 'user': 'mustache' });
|
|
* // => 'hello mustache!'
|
|
*
|
|
* // using backslashes to treat delimiters as plain text
|
|
* var compiled = _.template('<%= "\\<%- value %\\>" %>');
|
|
* compiled({ 'value': 'ignored' });
|
|
* // => '<%- value %>'
|
|
*
|
|
* // using the `imports` option to import `jQuery` as `jq`
|
|
* var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>';
|
|
* var compiled = _.template(text, { 'imports': { 'jq': jQuery } });
|
|
* compiled({ 'users': ['fred', 'barney'] });
|
|
* // => '<li>fred</li><li>barney</li>'
|
|
*
|
|
* // using the `sourceURL` option to specify a custom sourceURL for the template
|
|
* var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' });
|
|
* compiled(data);
|
|
* // => find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector
|
|
*
|
|
* // using the `variable` option to ensure a with-statement isn't used in the compiled template
|
|
* var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' });
|
|
* compiled.source;
|
|
* // => function(data) {
|
|
* // var __t, __p = '';
|
|
* // __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!';
|
|
* // return __p;
|
|
* // }
|
|
*
|
|
* // using the `source` property to inline compiled templates for meaningful
|
|
* // line numbers in error messages and a stack trace
|
|
* fs.writeFileSync(path.join(cwd, 'jst.js'), '\
|
|
* var JST = {\
|
|
* "main": ' + _.template(mainText).source + '\
|
|
* };\
|
|
* ');
|
|
*/
|
|
function template(string, options, otherOptions) {
|
|
// Based on John Resig's `tmpl` implementation (http://ejohn.org/blog/javascript-micro-templating/)
|
|
// and Laura Doktorova's doT.js (https://github.com/olado/doT).
|
|
var settings = lodash.templateSettings;
|
|
|
|
if (otherOptions && isIterateeCall(string, options, otherOptions)) {
|
|
options = otherOptions = null;
|
|
}
|
|
string = baseToString(string);
|
|
options = baseAssign(baseAssign({}, otherOptions || options), settings, assignOwnDefaults);
|
|
|
|
var imports = baseAssign(baseAssign({}, options.imports), settings.imports, assignOwnDefaults),
|
|
importsKeys = keys(imports),
|
|
importsValues = baseValues(imports, importsKeys);
|
|
|
|
var isEscaping,
|
|
isEvaluating,
|
|
index = 0,
|
|
interpolate = options.interpolate || reNoMatch,
|
|
source = "__p += '";
|
|
|
|
// Compile the regexp to match each delimiter.
|
|
var reDelimiters = RegExp(
|
|
(options.escape || reNoMatch).source + '|' +
|
|
interpolate.source + '|' +
|
|
(interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' +
|
|
(options.evaluate || reNoMatch).source + '|$'
|
|
, 'g');
|
|
|
|
// Use a sourceURL for easier debugging.
|
|
var sourceURL = '//# sourceURL=' +
|
|
('sourceURL' in options
|
|
? options.sourceURL
|
|
: ('lodash.templateSources[' + (++templateCounter) + ']')
|
|
) + '\n';
|
|
|
|
string.replace(reDelimiters, function(match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {
|
|
interpolateValue || (interpolateValue = esTemplateValue);
|
|
|
|
// Escape characters that can't be included in string literals.
|
|
source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar);
|
|
|
|
// Replace delimiters with snippets.
|
|
if (escapeValue) {
|
|
isEscaping = true;
|
|
source += "' +\n__e(" + escapeValue + ") +\n'";
|
|
}
|
|
if (evaluateValue) {
|
|
isEvaluating = true;
|
|
source += "';\n" + evaluateValue + ";\n__p += '";
|
|
}
|
|
if (interpolateValue) {
|
|
source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'";
|
|
}
|
|
index = offset + match.length;
|
|
|
|
// The JS engine embedded in Adobe products requires returning the `match`
|
|
// string in order to produce the correct `offset` value.
|
|
return match;
|
|
});
|
|
|
|
source += "';\n";
|
|
|
|
// If `variable` is not specified wrap a with-statement around the generated
|
|
// code to add the data object to the top of the scope chain.
|
|
var variable = options.variable;
|
|
if (!variable) {
|
|
source = 'with (obj) {\n' + source + '\n}\n';
|
|
}
|
|
// Cleanup code by stripping empty strings.
|
|
source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source)
|
|
.replace(reEmptyStringMiddle, '$1')
|
|
.replace(reEmptyStringTrailing, '$1;');
|
|
|
|
// Frame code as the function body.
|
|
source = 'function(' + (variable || 'obj') + ') {\n' +
|
|
(variable
|
|
? ''
|
|
: 'obj || (obj = {});\n'
|
|
) +
|
|
"var __t, __p = ''" +
|
|
(isEscaping
|
|
? ', __e = _.escape'
|
|
: ''
|
|
) +
|
|
(isEvaluating
|
|
? ', __j = Array.prototype.join;\n' +
|
|
"function print() { __p += __j.call(arguments, '') }\n"
|
|
: ';\n'
|
|
) +
|
|
source +
|
|
'return __p\n}';
|
|
|
|
var result = attempt(function() {
|
|
return Function(importsKeys, sourceURL + 'return ' + source).apply(undefined, importsValues);
|
|
});
|
|
|
|
// Provide the compiled function's source by its `toString` method or
|
|
// the `source` property as a convenience for inlining compiled templates.
|
|
result.source = source;
|
|
if (isError(result)) {
|
|
throw result;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Removes leading and trailing whitespace or specified characters from `string`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} [string=''] The string to trim.
|
|
* @param {string} [chars=whitespace] The characters to trim.
|
|
* @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
|
|
* @returns {string} Returns the trimmed string.
|
|
* @example
|
|
*
|
|
* _.trim(' abc ');
|
|
* // => 'abc'
|
|
*
|
|
* _.trim('-_-abc-_-', '_-');
|
|
* // => 'abc'
|
|
*
|
|
* _.map([' foo ', ' bar '], _.trim);
|
|
* // => ['foo', 'bar']
|
|
*/
|
|
function trim(string, chars, guard) {
|
|
var value = string;
|
|
string = baseToString(string);
|
|
if (!string) {
|
|
return string;
|
|
}
|
|
if (guard ? isIterateeCall(value, chars, guard) : chars == null) {
|
|
return string.slice(trimmedLeftIndex(string), trimmedRightIndex(string) + 1);
|
|
}
|
|
chars = (chars + '');
|
|
return string.slice(charsLeftIndex(string, chars), charsRightIndex(string, chars) + 1);
|
|
}
|
|
|
|
/**
|
|
* Removes leading whitespace or specified characters from `string`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} [string=''] The string to trim.
|
|
* @param {string} [chars=whitespace] The characters to trim.
|
|
* @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
|
|
* @returns {string} Returns the trimmed string.
|
|
* @example
|
|
*
|
|
* _.trimLeft(' abc ');
|
|
* // => 'abc '
|
|
*
|
|
* _.trimLeft('-_-abc-_-', '_-');
|
|
* // => 'abc-_-'
|
|
*/
|
|
function trimLeft(string, chars, guard) {
|
|
var value = string;
|
|
string = baseToString(string);
|
|
if (!string) {
|
|
return string;
|
|
}
|
|
if (guard ? isIterateeCall(value, chars, guard) : chars == null) {
|
|
return string.slice(trimmedLeftIndex(string));
|
|
}
|
|
return string.slice(charsLeftIndex(string, (chars + '')));
|
|
}
|
|
|
|
/**
|
|
* Removes trailing whitespace or specified characters from `string`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} [string=''] The string to trim.
|
|
* @param {string} [chars=whitespace] The characters to trim.
|
|
* @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
|
|
* @returns {string} Returns the trimmed string.
|
|
* @example
|
|
*
|
|
* _.trimRight(' abc ');
|
|
* // => ' abc'
|
|
*
|
|
* _.trimRight('-_-abc-_-', '_-');
|
|
* // => '-_-abc'
|
|
*/
|
|
function trimRight(string, chars, guard) {
|
|
var value = string;
|
|
string = baseToString(string);
|
|
if (!string) {
|
|
return string;
|
|
}
|
|
if (guard ? isIterateeCall(value, chars, guard) : chars == null) {
|
|
return string.slice(0, trimmedRightIndex(string) + 1);
|
|
}
|
|
return string.slice(0, charsRightIndex(string, (chars + '')) + 1);
|
|
}
|
|
|
|
/**
|
|
* Truncates `string` if it is longer than the given maximum string length.
|
|
* The last characters of the truncated string are replaced with the omission
|
|
* string which defaults to "...".
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} [string=''] The string to truncate.
|
|
* @param {Object|number} [options] The options object or maximum string length.
|
|
* @param {number} [options.length=30] The maximum string length.
|
|
* @param {string} [options.omission='...'] The string to indicate text is omitted.
|
|
* @param {RegExp|string} [options.separator] The separator pattern to truncate to.
|
|
* @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
|
|
* @returns {string} Returns the truncated string.
|
|
* @example
|
|
*
|
|
* _.trunc('hi-diddly-ho there, neighborino');
|
|
* // => 'hi-diddly-ho there, neighbo...'
|
|
*
|
|
* _.trunc('hi-diddly-ho there, neighborino', 24);
|
|
* // => 'hi-diddly-ho there, n...'
|
|
*
|
|
* _.trunc('hi-diddly-ho there, neighborino', {
|
|
* 'length': 24,
|
|
* 'separator': ' '
|
|
* });
|
|
* // => 'hi-diddly-ho there,...'
|
|
*
|
|
* _.trunc('hi-diddly-ho there, neighborino', {
|
|
* 'length': 24,
|
|
* 'separator': /,? +/
|
|
* });
|
|
* // => 'hi-diddly-ho there...'
|
|
*
|
|
* _.trunc('hi-diddly-ho there, neighborino', {
|
|
* 'omission': ' [...]'
|
|
* });
|
|
* // => 'hi-diddly-ho there, neig [...]'
|
|
*/
|
|
function trunc(string, options, guard) {
|
|
if (guard && isIterateeCall(string, options, guard)) {
|
|
options = null;
|
|
}
|
|
var length = DEFAULT_TRUNC_LENGTH,
|
|
omission = DEFAULT_TRUNC_OMISSION;
|
|
|
|
if (options != null) {
|
|
if (isObject(options)) {
|
|
var separator = 'separator' in options ? options.separator : separator;
|
|
length = 'length' in options ? (+options.length || 0) : length;
|
|
omission = 'omission' in options ? baseToString(options.omission) : omission;
|
|
} else {
|
|
length = +options || 0;
|
|
}
|
|
}
|
|
string = baseToString(string);
|
|
if (length >= string.length) {
|
|
return string;
|
|
}
|
|
var end = length - omission.length;
|
|
if (end < 1) {
|
|
return omission;
|
|
}
|
|
var result = string.slice(0, end);
|
|
if (separator == null) {
|
|
return result + omission;
|
|
}
|
|
if (isRegExp(separator)) {
|
|
if (string.slice(end).search(separator)) {
|
|
var match,
|
|
newEnd,
|
|
substring = string.slice(0, end);
|
|
|
|
if (!separator.global) {
|
|
separator = RegExp(separator.source, (reFlags.exec(separator) || '') + 'g');
|
|
}
|
|
separator.lastIndex = 0;
|
|
while ((match = separator.exec(substring))) {
|
|
newEnd = match.index;
|
|
}
|
|
result = result.slice(0, newEnd == null ? end : newEnd);
|
|
}
|
|
} else if (string.indexOf(separator, end) != end) {
|
|
var index = result.lastIndexOf(separator);
|
|
if (index > -1) {
|
|
result = result.slice(0, index);
|
|
}
|
|
}
|
|
return result + omission;
|
|
}
|
|
|
|
/**
|
|
* The inverse of `_.escape`; this method converts the HTML entities
|
|
* `&`, `<`, `>`, `"`, `'`, and ``` in `string` to their
|
|
* corresponding characters.
|
|
*
|
|
* **Note:** No other HTML entities are unescaped. To unescape additional HTML
|
|
* entities use a third-party library like [_he_](https://mths.be/he).
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} [string=''] The string to unescape.
|
|
* @returns {string} Returns the unescaped string.
|
|
* @example
|
|
*
|
|
* _.unescape('fred, barney, & pebbles');
|
|
* // => 'fred, barney, & pebbles'
|
|
*/
|
|
function unescape(string) {
|
|
string = baseToString(string);
|
|
return (string && reHasEscapedHtml.test(string))
|
|
? string.replace(reEscapedHtml, unescapeHtmlChar)
|
|
: string;
|
|
}
|
|
|
|
/**
|
|
* Splits `string` into an array of its words.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category String
|
|
* @param {string} [string=''] The string to inspect.
|
|
* @param {RegExp|string} [pattern] The pattern to match words.
|
|
* @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
|
|
* @returns {Array} Returns the words of `string`.
|
|
* @example
|
|
*
|
|
* _.words('fred, barney, & pebbles');
|
|
* // => ['fred', 'barney', 'pebbles']
|
|
*
|
|
* _.words('fred, barney, & pebbles', /[^, ]+/g);
|
|
* // => ['fred', 'barney', '&', 'pebbles']
|
|
*/
|
|
function words(string, pattern, guard) {
|
|
if (guard && isIterateeCall(string, pattern, guard)) {
|
|
pattern = null;
|
|
}
|
|
string = baseToString(string);
|
|
return string.match(pattern || reWords) || [];
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
* Attempts to invoke `func`, returning either the result or the caught error
|
|
* object. Any additional arguments are provided to `func` when it is invoked.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Utility
|
|
* @param {Function} func The function to attempt.
|
|
* @returns {*} Returns the `func` result or error object.
|
|
* @example
|
|
*
|
|
* // avoid throwing errors for invalid selectors
|
|
* var elements = _.attempt(function(selector) {
|
|
* return document.querySelectorAll(selector);
|
|
* }, '>_>');
|
|
*
|
|
* if (_.isError(elements)) {
|
|
* elements = [];
|
|
* }
|
|
*/
|
|
var attempt = restParam(function(func, args) {
|
|
try {
|
|
return func.apply(undefined, args);
|
|
} catch(e) {
|
|
return isError(e) ? e : new Error(e);
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Creates a function that invokes `func` with the `this` binding of `thisArg`
|
|
* and arguments of the created function. If `func` is a property name the
|
|
* created callback returns the property value for a given element. If `func`
|
|
* is an object the created callback returns `true` for elements that contain
|
|
* the equivalent object properties, otherwise it returns `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @alias iteratee
|
|
* @category Utility
|
|
* @param {*} [func=_.identity] The value to convert to a callback.
|
|
* @param {*} [thisArg] The `this` binding of `func`.
|
|
* @param- {Object} [guard] Enables use as a callback for functions like `_.map`.
|
|
* @returns {Function} Returns the callback.
|
|
* @example
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'age': 36 },
|
|
* { 'user': 'fred', 'age': 40 }
|
|
* ];
|
|
*
|
|
* // wrap to create custom callback shorthands
|
|
* _.callback = _.wrap(_.callback, function(callback, func, thisArg) {
|
|
* var match = /^(.+?)__([gl]t)(.+)$/.exec(func);
|
|
* if (!match) {
|
|
* return callback(func, thisArg);
|
|
* }
|
|
* return function(object) {
|
|
* return match[2] == 'gt'
|
|
* ? object[match[1]] > match[3]
|
|
* : object[match[1]] < match[3];
|
|
* };
|
|
* });
|
|
*
|
|
* _.filter(users, 'age__gt36');
|
|
* // => [{ 'user': 'fred', 'age': 40 }]
|
|
*/
|
|
function callback(func, thisArg, guard) {
|
|
if (guard && isIterateeCall(func, thisArg, guard)) {
|
|
thisArg = null;
|
|
}
|
|
return isObjectLike(func)
|
|
? matches(func)
|
|
: baseCallback(func, thisArg);
|
|
}
|
|
|
|
/**
|
|
* Creates a function that returns `value`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Utility
|
|
* @param {*} value The value to return from the new function.
|
|
* @returns {Function} Returns the new function.
|
|
* @example
|
|
*
|
|
* var object = { 'user': 'fred' };
|
|
* var getter = _.constant(object);
|
|
*
|
|
* getter() === object;
|
|
* // => true
|
|
*/
|
|
function constant(value) {
|
|
return function() {
|
|
return value;
|
|
};
|
|
}
|
|
|
|
/**
|
|
* This method returns the first argument provided to it.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Utility
|
|
* @param {*} value Any value.
|
|
* @returns {*} Returns `value`.
|
|
* @example
|
|
*
|
|
* var object = { 'user': 'fred' };
|
|
*
|
|
* _.identity(object) === object;
|
|
* // => true
|
|
*/
|
|
function identity(value) {
|
|
return value;
|
|
}
|
|
|
|
/**
|
|
* Creates a function which performs a deep comparison between a given object
|
|
* and `source`, returning `true` if the given object has equivalent property
|
|
* values, else `false`.
|
|
*
|
|
* **Note:** This method supports comparing arrays, booleans, `Date` objects,
|
|
* numbers, `Object` objects, regexes, and strings. Objects are compared by
|
|
* their own, not inherited, enumerable properties. For comparing a single
|
|
* own or inherited property value see `_.matchesProperty`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Utility
|
|
* @param {Object} source The object of property values to match.
|
|
* @returns {Function} Returns the new function.
|
|
* @example
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'age': 36, 'active': true },
|
|
* { 'user': 'fred', 'age': 40, 'active': false }
|
|
* ];
|
|
*
|
|
* _.filter(users, _.matches({ 'age': 40, 'active': false }));
|
|
* // => [{ 'user': 'fred', 'age': 40, 'active': false }]
|
|
*/
|
|
function matches(source) {
|
|
return baseMatches(baseClone(source, true));
|
|
}
|
|
|
|
/**
|
|
* Creates a function which compares the property value of `key` on a given
|
|
* object to `value`.
|
|
*
|
|
* **Note:** This method supports comparing arrays, booleans, `Date` objects,
|
|
* numbers, `Object` objects, regexes, and strings. Objects are compared by
|
|
* their own, not inherited, enumerable properties.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Utility
|
|
* @param {string} key The key of the property to get.
|
|
* @param {*} value The value to compare.
|
|
* @returns {Function} Returns the new function.
|
|
* @example
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney' },
|
|
* { 'user': 'fred' }
|
|
* ];
|
|
*
|
|
* _.find(users, _.matchesProperty('user', 'fred'));
|
|
* // => { 'user': 'fred' }
|
|
*/
|
|
function matchesProperty(key, value) {
|
|
return baseMatchesProperty(key + '', baseClone(value, true));
|
|
}
|
|
|
|
/**
|
|
* Adds all own enumerable function properties of a source object to the
|
|
* destination object. If `object` is a function then methods are added to
|
|
* its prototype as well.
|
|
*
|
|
* **Note:** Use `_.runInContext` to create a pristine `lodash` function
|
|
* for mixins to avoid conflicts caused by modifying the original.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Utility
|
|
* @param {Function|Object} [object=this] object The destination object.
|
|
* @param {Object} source The object of functions to add.
|
|
* @param {Object} [options] The options object.
|
|
* @param {boolean} [options.chain=true] Specify whether the functions added
|
|
* are chainable.
|
|
* @returns {Function|Object} Returns `object`.
|
|
* @example
|
|
*
|
|
* function vowels(string) {
|
|
* return _.filter(string, function(v) {
|
|
* return /[aeiou]/i.test(v);
|
|
* });
|
|
* }
|
|
*
|
|
* // use `_.runInContext` to avoid conflicts (esp. in Node.js)
|
|
* var _ = require('lodash').runInContext();
|
|
*
|
|
* _.mixin({ 'vowels': vowels });
|
|
* _.vowels('fred');
|
|
* // => ['e']
|
|
*
|
|
* _('fred').vowels().value();
|
|
* // => ['e']
|
|
*
|
|
* _.mixin({ 'vowels': vowels }, { 'chain': false });
|
|
* _('fred').vowels();
|
|
* // => ['e']
|
|
*/
|
|
function mixin(object, source, options) {
|
|
if (options == null) {
|
|
var isObj = isObject(source),
|
|
props = isObj && keys(source),
|
|
methodNames = props && props.length && baseFunctions(source, props);
|
|
|
|
if (!(methodNames ? methodNames.length : isObj)) {
|
|
methodNames = false;
|
|
options = source;
|
|
source = object;
|
|
object = this;
|
|
}
|
|
}
|
|
if (!methodNames) {
|
|
methodNames = baseFunctions(source, keys(source));
|
|
}
|
|
var chain = true,
|
|
index = -1,
|
|
isFunc = isFunction(object),
|
|
length = methodNames.length;
|
|
|
|
if (options === false) {
|
|
chain = false;
|
|
} else if (isObject(options) && 'chain' in options) {
|
|
chain = options.chain;
|
|
}
|
|
while (++index < length) {
|
|
var methodName = methodNames[index],
|
|
func = source[methodName];
|
|
|
|
object[methodName] = func;
|
|
if (isFunc) {
|
|
object.prototype[methodName] = (function(func) {
|
|
return function() {
|
|
var chainAll = this.__chain__;
|
|
if (chain || chainAll) {
|
|
var result = object(this.__wrapped__),
|
|
actions = result.__actions__ = arrayCopy(this.__actions__);
|
|
|
|
actions.push({ 'func': func, 'args': arguments, 'thisArg': object });
|
|
result.__chain__ = chainAll;
|
|
return result;
|
|
}
|
|
var args = [this.value()];
|
|
push.apply(args, arguments);
|
|
return func.apply(object, args);
|
|
};
|
|
}(func));
|
|
}
|
|
}
|
|
return object;
|
|
}
|
|
|
|
/**
|
|
* Reverts the `_` variable to its previous value and returns a reference to
|
|
* the `lodash` function.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Utility
|
|
* @returns {Function} Returns the `lodash` function.
|
|
* @example
|
|
*
|
|
* var lodash = _.noConflict();
|
|
*/
|
|
function noConflict() {
|
|
context._ = oldDash;
|
|
return this;
|
|
}
|
|
|
|
/**
|
|
* A no-operation function which returns `undefined` regardless of the
|
|
* arguments it receives.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Utility
|
|
* @example
|
|
*
|
|
* var object = { 'user': 'fred' };
|
|
*
|
|
* _.noop(object) === undefined;
|
|
* // => true
|
|
*/
|
|
function noop() {
|
|
// No operation performed.
|
|
}
|
|
|
|
/**
|
|
* Creates a function which returns the property value of `key` on a given object.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Utility
|
|
* @param {string} key The key of the property to get.
|
|
* @returns {Function} Returns the new function.
|
|
* @example
|
|
*
|
|
* var users = [
|
|
* { 'user': 'fred' },
|
|
* { 'user': 'barney' }
|
|
* ];
|
|
*
|
|
* var getName = _.property('user');
|
|
*
|
|
* _.map(users, getName);
|
|
* // => ['fred', 'barney']
|
|
*
|
|
* _.pluck(_.sortBy(users, getName), 'user');
|
|
* // => ['barney', 'fred']
|
|
*/
|
|
function property(key) {
|
|
return baseProperty(key + '');
|
|
}
|
|
|
|
/**
|
|
* The opposite of `_.property`; this method creates a function which returns
|
|
* the property value of a given key on `object`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Utility
|
|
* @param {Object} object The object to inspect.
|
|
* @returns {Function} Returns the new function.
|
|
* @example
|
|
*
|
|
* var object = { 'a': 3, 'b': 1, 'c': 2 };
|
|
*
|
|
* _.map(['a', 'c'], _.propertyOf(object));
|
|
* // => [3, 2]
|
|
*
|
|
* _.sortBy(['a', 'b', 'c'], _.propertyOf(object));
|
|
* // => ['b', 'c', 'a']
|
|
*/
|
|
function propertyOf(object) {
|
|
return function(key) {
|
|
return object == null ? undefined : object[key];
|
|
};
|
|
}
|
|
|
|
/**
|
|
* Creates an array of numbers (positive and/or negative) progressing from
|
|
* `start` up to, but not including, `end`. If `end` is not specified it is
|
|
* set to `start` with `start` then set to `0`. If `start` is less than `end`
|
|
* a zero-length range is created unless a negative `step` is specified.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Utility
|
|
* @param {number} [start=0] The start of the range.
|
|
* @param {number} end The end of the range.
|
|
* @param {number} [step=1] The value to increment or decrement by.
|
|
* @returns {Array} Returns the new array of numbers.
|
|
* @example
|
|
*
|
|
* _.range(4);
|
|
* // => [0, 1, 2, 3]
|
|
*
|
|
* _.range(1, 5);
|
|
* // => [1, 2, 3, 4]
|
|
*
|
|
* _.range(0, 20, 5);
|
|
* // => [0, 5, 10, 15]
|
|
*
|
|
* _.range(0, -4, -1);
|
|
* // => [0, -1, -2, -3]
|
|
*
|
|
* _.range(1, 4, 0);
|
|
* // => [1, 1, 1]
|
|
*
|
|
* _.range(0);
|
|
* // => []
|
|
*/
|
|
function range(start, end, step) {
|
|
if (step && isIterateeCall(start, end, step)) {
|
|
end = step = null;
|
|
}
|
|
start = +start || 0;
|
|
step = step == null ? 1 : (+step || 0);
|
|
|
|
if (end == null) {
|
|
end = start;
|
|
start = 0;
|
|
} else {
|
|
end = +end || 0;
|
|
}
|
|
// Use `Array(length)` so engines like Chakra and V8 avoid slower modes.
|
|
// See https://youtu.be/XAqIpGU8ZZk#t=17m25s for more details.
|
|
var index = -1,
|
|
length = nativeMax(ceil((end - start) / (step || 1)), 0),
|
|
result = Array(length);
|
|
|
|
while (++index < length) {
|
|
result[index] = start;
|
|
start += step;
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Invokes the iteratee function `n` times, returning an array of the results
|
|
* of each invocation. The `iteratee` is bound to `thisArg` and invoked with
|
|
* one argument; (index).
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Utility
|
|
* @param {number} n The number of times to invoke `iteratee`.
|
|
* @param {Function} [iteratee=_.identity] The function invoked per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {Array} Returns the array of results.
|
|
* @example
|
|
*
|
|
* var diceRolls = _.times(3, _.partial(_.random, 1, 6, false));
|
|
* // => [3, 6, 4]
|
|
*
|
|
* _.times(3, function(n) {
|
|
* mage.castSpell(n);
|
|
* });
|
|
* // => invokes `mage.castSpell(n)` three times with `n` of `0`, `1`, and `2` respectively
|
|
*
|
|
* _.times(3, function(n) {
|
|
* this.cast(n);
|
|
* }, mage);
|
|
* // => also invokes `mage.castSpell(n)` three times
|
|
*/
|
|
function times(n, iteratee, thisArg) {
|
|
n = +n;
|
|
|
|
// Exit early to avoid a JSC JIT bug in Safari 8
|
|
// where `Array(0)` is treated as `Array(1)`.
|
|
if (n < 1 || !nativeIsFinite(n)) {
|
|
return [];
|
|
}
|
|
var index = -1,
|
|
result = Array(nativeMin(n, MAX_ARRAY_LENGTH));
|
|
|
|
iteratee = bindCallback(iteratee, thisArg, 1);
|
|
while (++index < n) {
|
|
if (index < MAX_ARRAY_LENGTH) {
|
|
result[index] = iteratee(index);
|
|
} else {
|
|
iteratee(index);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* Generates a unique ID. If `prefix` is provided the ID is appended to it.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Utility
|
|
* @param {string} [prefix] The value to prefix the ID with.
|
|
* @returns {string} Returns the unique ID.
|
|
* @example
|
|
*
|
|
* _.uniqueId('contact_');
|
|
* // => 'contact_104'
|
|
*
|
|
* _.uniqueId();
|
|
* // => '105'
|
|
*/
|
|
function uniqueId(prefix) {
|
|
var id = ++idCounter;
|
|
return baseToString(prefix) + id;
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
* Adds two numbers.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Math
|
|
* @param {number} augend The first number to add.
|
|
* @param {number} addend The second number to add.
|
|
* @returns {number} Returns the sum.
|
|
* @example
|
|
*
|
|
* _.add(6, 4);
|
|
* // => 10
|
|
*/
|
|
function add(augend, addend) {
|
|
return augend + addend;
|
|
}
|
|
|
|
/**
|
|
* Gets the maximum value of `collection`. If `collection` is empty or falsey
|
|
* `-Infinity` is returned. If an iteratee function is provided it is invoked
|
|
* for each value in `collection` to generate the criterion by which the value
|
|
* is ranked. The `iteratee` is bound to `thisArg` and invoked with three
|
|
* arguments: (value, index, collection).
|
|
*
|
|
* If a property name is provided for `iteratee` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `iteratee` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Math
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function|Object|string} [iteratee] The function invoked per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {*} Returns the maximum value.
|
|
* @example
|
|
*
|
|
* _.max([4, 2, 8, 6]);
|
|
* // => 8
|
|
*
|
|
* _.max([]);
|
|
* // => -Infinity
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'age': 36 },
|
|
* { 'user': 'fred', 'age': 40 }
|
|
* ];
|
|
*
|
|
* _.max(users, function(chr) {
|
|
* return chr.age;
|
|
* });
|
|
* // => { 'user': 'fred', 'age': 40 }
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.max(users, 'age');
|
|
* // => { 'user': 'fred', 'age': 40 }
|
|
*/
|
|
var max = createExtremum(arrayMax);
|
|
|
|
/**
|
|
* Gets the minimum value of `collection`. If `collection` is empty or falsey
|
|
* `Infinity` is returned. If an iteratee function is provided it is invoked
|
|
* for each value in `collection` to generate the criterion by which the value
|
|
* is ranked. The `iteratee` is bound to `thisArg` and invoked with three
|
|
* arguments: (value, index, collection).
|
|
*
|
|
* If a property name is provided for `iteratee` the created `_.property`
|
|
* style callback returns the property value of the given element.
|
|
*
|
|
* If a value is also provided for `thisArg` the created `_.matchesProperty`
|
|
* style callback returns `true` for elements that have a matching property
|
|
* value, else `false`.
|
|
*
|
|
* If an object is provided for `iteratee` the created `_.matches` style
|
|
* callback returns `true` for elements that have the properties of the given
|
|
* object, else `false`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Math
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function|Object|string} [iteratee] The function invoked per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {*} Returns the minimum value.
|
|
* @example
|
|
*
|
|
* _.min([4, 2, 8, 6]);
|
|
* // => 2
|
|
*
|
|
* _.min([]);
|
|
* // => Infinity
|
|
*
|
|
* var users = [
|
|
* { 'user': 'barney', 'age': 36 },
|
|
* { 'user': 'fred', 'age': 40 }
|
|
* ];
|
|
*
|
|
* _.min(users, function(chr) {
|
|
* return chr.age;
|
|
* });
|
|
* // => { 'user': 'barney', 'age': 36 }
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.min(users, 'age');
|
|
* // => { 'user': 'barney', 'age': 36 }
|
|
*/
|
|
var min = createExtremum(arrayMin, true);
|
|
|
|
/**
|
|
* Gets the sum of the values in `collection`.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @category Math
|
|
* @param {Array|Object|string} collection The collection to iterate over.
|
|
* @param {Function|Object|string} [iteratee] The function invoked per iteration.
|
|
* @param {*} [thisArg] The `this` binding of `iteratee`.
|
|
* @returns {number} Returns the sum.
|
|
* @example
|
|
*
|
|
* _.sum([4, 6]);
|
|
* // => 10
|
|
*
|
|
* _.sum({ 'a': 4, 'b': 6 });
|
|
* // => 10
|
|
*
|
|
* var objects = [
|
|
* { 'n': 4 },
|
|
* { 'n': 6 }
|
|
* ];
|
|
*
|
|
* _.sum(objects, function(object) {
|
|
* return object.n;
|
|
* });
|
|
* // => 10
|
|
*
|
|
* // using the `_.property` callback shorthand
|
|
* _.sum(objects, 'n');
|
|
* // => 10
|
|
*/
|
|
function sum(collection, iteratee, thisArg) {
|
|
if (thisArg && isIterateeCall(collection, iteratee, thisArg)) {
|
|
iteratee = null;
|
|
}
|
|
var func = getCallback(),
|
|
noIteratee = iteratee == null;
|
|
|
|
if (!(func === baseCallback && noIteratee)) {
|
|
noIteratee = false;
|
|
iteratee = func(iteratee, thisArg, 3);
|
|
}
|
|
return noIteratee
|
|
? arraySum(isArray(collection) ? collection : toIterable(collection))
|
|
: baseSum(collection, iteratee);
|
|
}
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
// Ensure wrappers are instances of `baseLodash`.
|
|
lodash.prototype = baseLodash.prototype;
|
|
|
|
LodashWrapper.prototype = baseCreate(baseLodash.prototype);
|
|
LodashWrapper.prototype.constructor = LodashWrapper;
|
|
|
|
LazyWrapper.prototype = baseCreate(baseLodash.prototype);
|
|
LazyWrapper.prototype.constructor = LazyWrapper;
|
|
|
|
// Add functions to the `Map` cache.
|
|
MapCache.prototype['delete'] = mapDelete;
|
|
MapCache.prototype.get = mapGet;
|
|
MapCache.prototype.has = mapHas;
|
|
MapCache.prototype.set = mapSet;
|
|
|
|
// Add functions to the `Set` cache.
|
|
SetCache.prototype.push = cachePush;
|
|
|
|
// Assign cache to `_.memoize`.
|
|
memoize.Cache = MapCache;
|
|
|
|
// Add functions that return wrapped values when chaining.
|
|
lodash.after = after;
|
|
lodash.ary = ary;
|
|
lodash.assign = assign;
|
|
lodash.at = at;
|
|
lodash.before = before;
|
|
lodash.bind = bind;
|
|
lodash.bindAll = bindAll;
|
|
lodash.bindKey = bindKey;
|
|
lodash.callback = callback;
|
|
lodash.chain = chain;
|
|
lodash.chunk = chunk;
|
|
lodash.compact = compact;
|
|
lodash.constant = constant;
|
|
lodash.countBy = countBy;
|
|
lodash.create = create;
|
|
lodash.curry = curry;
|
|
lodash.curryRight = curryRight;
|
|
lodash.debounce = debounce;
|
|
lodash.defaults = defaults;
|
|
lodash.defer = defer;
|
|
lodash.delay = delay;
|
|
lodash.difference = difference;
|
|
lodash.drop = drop;
|
|
lodash.dropRight = dropRight;
|
|
lodash.dropRightWhile = dropRightWhile;
|
|
lodash.dropWhile = dropWhile;
|
|
lodash.fill = fill;
|
|
lodash.filter = filter;
|
|
lodash.flatten = flatten;
|
|
lodash.flattenDeep = flattenDeep;
|
|
lodash.flow = flow;
|
|
lodash.flowRight = flowRight;
|
|
lodash.forEach = forEach;
|
|
lodash.forEachRight = forEachRight;
|
|
lodash.forIn = forIn;
|
|
lodash.forInRight = forInRight;
|
|
lodash.forOwn = forOwn;
|
|
lodash.forOwnRight = forOwnRight;
|
|
lodash.functions = functions;
|
|
lodash.groupBy = groupBy;
|
|
lodash.indexBy = indexBy;
|
|
lodash.initial = initial;
|
|
lodash.intersection = intersection;
|
|
lodash.invert = invert;
|
|
lodash.invoke = invoke;
|
|
lodash.keys = keys;
|
|
lodash.keysIn = keysIn;
|
|
lodash.map = map;
|
|
lodash.mapValues = mapValues;
|
|
lodash.matches = matches;
|
|
lodash.matchesProperty = matchesProperty;
|
|
lodash.memoize = memoize;
|
|
lodash.merge = merge;
|
|
lodash.mixin = mixin;
|
|
lodash.negate = negate;
|
|
lodash.omit = omit;
|
|
lodash.once = once;
|
|
lodash.pairs = pairs;
|
|
lodash.partial = partial;
|
|
lodash.partialRight = partialRight;
|
|
lodash.partition = partition;
|
|
lodash.pick = pick;
|
|
lodash.pluck = pluck;
|
|
lodash.property = property;
|
|
lodash.propertyOf = propertyOf;
|
|
lodash.pull = pull;
|
|
lodash.pullAt = pullAt;
|
|
lodash.range = range;
|
|
lodash.rearg = rearg;
|
|
lodash.reject = reject;
|
|
lodash.remove = remove;
|
|
lodash.rest = rest;
|
|
lodash.restParam = restParam;
|
|
lodash.shuffle = shuffle;
|
|
lodash.slice = slice;
|
|
lodash.sortBy = sortBy;
|
|
lodash.sortByAll = sortByAll;
|
|
lodash.sortByOrder = sortByOrder;
|
|
lodash.spread = spread;
|
|
lodash.take = take;
|
|
lodash.takeRight = takeRight;
|
|
lodash.takeRightWhile = takeRightWhile;
|
|
lodash.takeWhile = takeWhile;
|
|
lodash.tap = tap;
|
|
lodash.throttle = throttle;
|
|
lodash.thru = thru;
|
|
lodash.times = times;
|
|
lodash.toArray = toArray;
|
|
lodash.toPlainObject = toPlainObject;
|
|
lodash.transform = transform;
|
|
lodash.union = union;
|
|
lodash.uniq = uniq;
|
|
lodash.unzip = unzip;
|
|
lodash.values = values;
|
|
lodash.valuesIn = valuesIn;
|
|
lodash.where = where;
|
|
lodash.without = without;
|
|
lodash.wrap = wrap;
|
|
lodash.xor = xor;
|
|
lodash.zip = zip;
|
|
lodash.zipObject = zipObject;
|
|
|
|
// Add aliases.
|
|
lodash.backflow = flowRight;
|
|
lodash.collect = map;
|
|
lodash.compose = flowRight;
|
|
lodash.each = forEach;
|
|
lodash.eachRight = forEachRight;
|
|
lodash.extend = assign;
|
|
lodash.iteratee = callback;
|
|
lodash.methods = functions;
|
|
lodash.object = zipObject;
|
|
lodash.select = filter;
|
|
lodash.tail = rest;
|
|
lodash.unique = uniq;
|
|
|
|
// Add functions to `lodash.prototype`.
|
|
mixin(lodash, lodash);
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
// Add functions that return unwrapped values when chaining.
|
|
lodash.add = add;
|
|
lodash.attempt = attempt;
|
|
lodash.camelCase = camelCase;
|
|
lodash.capitalize = capitalize;
|
|
lodash.clone = clone;
|
|
lodash.cloneDeep = cloneDeep;
|
|
lodash.deburr = deburr;
|
|
lodash.endsWith = endsWith;
|
|
lodash.escape = escape;
|
|
lodash.escapeRegExp = escapeRegExp;
|
|
lodash.every = every;
|
|
lodash.find = find;
|
|
lodash.findIndex = findIndex;
|
|
lodash.findKey = findKey;
|
|
lodash.findLast = findLast;
|
|
lodash.findLastIndex = findLastIndex;
|
|
lodash.findLastKey = findLastKey;
|
|
lodash.findWhere = findWhere;
|
|
lodash.first = first;
|
|
lodash.has = has;
|
|
lodash.identity = identity;
|
|
lodash.includes = includes;
|
|
lodash.indexOf = indexOf;
|
|
lodash.inRange = inRange;
|
|
lodash.isArguments = isArguments;
|
|
lodash.isArray = isArray;
|
|
lodash.isBoolean = isBoolean;
|
|
lodash.isDate = isDate;
|
|
lodash.isElement = isElement;
|
|
lodash.isEmpty = isEmpty;
|
|
lodash.isEqual = isEqual;
|
|
lodash.isError = isError;
|
|
lodash.isFinite = isFinite;
|
|
lodash.isFunction = isFunction;
|
|
lodash.isMatch = isMatch;
|
|
lodash.isNaN = isNaN;
|
|
lodash.isNative = isNative;
|
|
lodash.isNull = isNull;
|
|
lodash.isNumber = isNumber;
|
|
lodash.isObject = isObject;
|
|
lodash.isPlainObject = isPlainObject;
|
|
lodash.isRegExp = isRegExp;
|
|
lodash.isString = isString;
|
|
lodash.isTypedArray = isTypedArray;
|
|
lodash.isUndefined = isUndefined;
|
|
lodash.kebabCase = kebabCase;
|
|
lodash.last = last;
|
|
lodash.lastIndexOf = lastIndexOf;
|
|
lodash.max = max;
|
|
lodash.min = min;
|
|
lodash.noConflict = noConflict;
|
|
lodash.noop = noop;
|
|
lodash.now = now;
|
|
lodash.pad = pad;
|
|
lodash.padLeft = padLeft;
|
|
lodash.padRight = padRight;
|
|
lodash.parseInt = parseInt;
|
|
lodash.random = random;
|
|
lodash.reduce = reduce;
|
|
lodash.reduceRight = reduceRight;
|
|
lodash.repeat = repeat;
|
|
lodash.result = result;
|
|
lodash.runInContext = runInContext;
|
|
lodash.size = size;
|
|
lodash.snakeCase = snakeCase;
|
|
lodash.some = some;
|
|
lodash.sortedIndex = sortedIndex;
|
|
lodash.sortedLastIndex = sortedLastIndex;
|
|
lodash.startCase = startCase;
|
|
lodash.startsWith = startsWith;
|
|
lodash.sum = sum;
|
|
lodash.template = template;
|
|
lodash.trim = trim;
|
|
lodash.trimLeft = trimLeft;
|
|
lodash.trimRight = trimRight;
|
|
lodash.trunc = trunc;
|
|
lodash.unescape = unescape;
|
|
lodash.uniqueId = uniqueId;
|
|
lodash.words = words;
|
|
|
|
// Add aliases.
|
|
lodash.all = every;
|
|
lodash.any = some;
|
|
lodash.contains = includes;
|
|
lodash.detect = find;
|
|
lodash.foldl = reduce;
|
|
lodash.foldr = reduceRight;
|
|
lodash.head = first;
|
|
lodash.include = includes;
|
|
lodash.inject = reduce;
|
|
|
|
mixin(lodash, (function() {
|
|
var source = {};
|
|
baseForOwn(lodash, function(func, methodName) {
|
|
if (!lodash.prototype[methodName]) {
|
|
source[methodName] = func;
|
|
}
|
|
});
|
|
return source;
|
|
}()), false);
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
// Add functions capable of returning wrapped and unwrapped values when chaining.
|
|
lodash.sample = sample;
|
|
|
|
lodash.prototype.sample = function(n) {
|
|
if (!this.__chain__ && n == null) {
|
|
return sample(this.value());
|
|
}
|
|
return this.thru(function(value) {
|
|
return sample(value, n);
|
|
});
|
|
};
|
|
|
|
/*------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
* The semantic version number.
|
|
*
|
|
* @static
|
|
* @memberOf _
|
|
* @type string
|
|
*/
|
|
lodash.VERSION = VERSION;
|
|
|
|
// Assign default placeholders.
|
|
arrayEach(['bind', 'bindKey', 'curry', 'curryRight', 'partial', 'partialRight'], function(methodName) {
|
|
lodash[methodName].placeholder = lodash;
|
|
});
|
|
|
|
// Add `LazyWrapper` methods that accept an `iteratee` value.
|
|
arrayEach(['dropWhile', 'filter', 'map', 'takeWhile'], function(methodName, type) {
|
|
var isFilter = type != LAZY_MAP_FLAG,
|
|
isDropWhile = type == LAZY_DROP_WHILE_FLAG;
|
|
|
|
LazyWrapper.prototype[methodName] = function(iteratee, thisArg) {
|
|
var filtered = this.__filtered__,
|
|
result = (filtered && isDropWhile) ? new LazyWrapper(this) : this.clone(),
|
|
iteratees = result.__iteratees__ || (result.__iteratees__ = []);
|
|
|
|
iteratees.push({
|
|
'done': false,
|
|
'count': 0,
|
|
'index': 0,
|
|
'iteratee': getCallback(iteratee, thisArg, 1),
|
|
'limit': -1,
|
|
'type': type
|
|
});
|
|
|
|
result.__filtered__ = filtered || isFilter;
|
|
return result;
|
|
};
|
|
});
|
|
|
|
// Add `LazyWrapper` methods for `_.drop` and `_.take` variants.
|
|
arrayEach(['drop', 'take'], function(methodName, index) {
|
|
var whileName = methodName + 'While';
|
|
|
|
LazyWrapper.prototype[methodName] = function(n) {
|
|
var filtered = this.__filtered__,
|
|
result = (filtered && !index) ? this.dropWhile() : this.clone();
|
|
|
|
n = n == null ? 1 : nativeMax(floor(n) || 0, 0);
|
|
if (filtered) {
|
|
if (index) {
|
|
result.__takeCount__ = nativeMin(result.__takeCount__, n);
|
|
} else {
|
|
last(result.__iteratees__).limit = n;
|
|
}
|
|
} else {
|
|
var views = result.__views__ || (result.__views__ = []);
|
|
views.push({ 'size': n, 'type': methodName + (result.__dir__ < 0 ? 'Right' : '') });
|
|
}
|
|
return result;
|
|
};
|
|
|
|
LazyWrapper.prototype[methodName + 'Right'] = function(n) {
|
|
return this.reverse()[methodName](n).reverse();
|
|
};
|
|
|
|
LazyWrapper.prototype[methodName + 'RightWhile'] = function(predicate, thisArg) {
|
|
return this.reverse()[whileName](predicate, thisArg).reverse();
|
|
};
|
|
});
|
|
|
|
// Add `LazyWrapper` methods for `_.first` and `_.last`.
|
|
arrayEach(['first', 'last'], function(methodName, index) {
|
|
var takeName = 'take' + (index ? 'Right' : '');
|
|
|
|
LazyWrapper.prototype[methodName] = function() {
|
|
return this[takeName](1).value()[0];
|
|
};
|
|
});
|
|
|
|
// Add `LazyWrapper` methods for `_.initial` and `_.rest`.
|
|
arrayEach(['initial', 'rest'], function(methodName, index) {
|
|
var dropName = 'drop' + (index ? '' : 'Right');
|
|
|
|
LazyWrapper.prototype[methodName] = function() {
|
|
return this[dropName](1);
|
|
};
|
|
});
|
|
|
|
// Add `LazyWrapper` methods for `_.pluck` and `_.where`.
|
|
arrayEach(['pluck', 'where'], function(methodName, index) {
|
|
var operationName = index ? 'filter' : 'map',
|
|
createCallback = index ? baseMatches : baseProperty;
|
|
|
|
LazyWrapper.prototype[methodName] = function(value) {
|
|
return this[operationName](createCallback(value));
|
|
};
|
|
});
|
|
|
|
LazyWrapper.prototype.compact = function() {
|
|
return this.filter(identity);
|
|
};
|
|
|
|
LazyWrapper.prototype.reject = function(predicate, thisArg) {
|
|
predicate = getCallback(predicate, thisArg, 1);
|
|
return this.filter(function(value) {
|
|
return !predicate(value);
|
|
});
|
|
};
|
|
|
|
LazyWrapper.prototype.slice = function(start, end) {
|
|
start = start == null ? 0 : (+start || 0);
|
|
var result = start < 0 ? this.takeRight(-start) : this.drop(start);
|
|
|
|
if (typeof end != 'undefined') {
|
|
end = (+end || 0);
|
|
result = end < 0 ? result.dropRight(-end) : result.take(end - start);
|
|
}
|
|
return result;
|
|
};
|
|
|
|
LazyWrapper.prototype.toArray = function() {
|
|
return this.drop(0);
|
|
};
|
|
|
|
// Add `LazyWrapper` methods to `lodash.prototype`.
|
|
baseForOwn(LazyWrapper.prototype, function(func, methodName) {
|
|
var lodashFunc = lodash[methodName];
|
|
if (!lodashFunc) {
|
|
return;
|
|
}
|
|
var checkIteratee = /^(?:filter|map|reject)|While$/.test(methodName),
|
|
retUnwrapped = /^(?:first|last)$/.test(methodName);
|
|
|
|
lodash.prototype[methodName] = function() {
|
|
var args = arguments,
|
|
length = args.length,
|
|
chainAll = this.__chain__,
|
|
value = this.__wrapped__,
|
|
isHybrid = !!this.__actions__.length,
|
|
isLazy = value instanceof LazyWrapper,
|
|
iteratee = args[0],
|
|
useLazy = isLazy || isArray(value);
|
|
|
|
if (useLazy && checkIteratee && typeof iteratee == 'function' && iteratee.length != 1) {
|
|
// avoid lazy use if the iteratee has a `length` other than `1`
|
|
isLazy = useLazy = false;
|
|
}
|
|
var onlyLazy = isLazy && !isHybrid;
|
|
if (retUnwrapped && !chainAll) {
|
|
return onlyLazy
|
|
? func.call(value)
|
|
: lodashFunc.call(lodash, this.value());
|
|
}
|
|
var interceptor = function(value) {
|
|
var otherArgs = [value];
|
|
push.apply(otherArgs, args);
|
|
return lodashFunc.apply(lodash, otherArgs);
|
|
};
|
|
if (useLazy) {
|
|
var wrapper = onlyLazy ? value : new LazyWrapper(this),
|
|
result = func.apply(wrapper, args);
|
|
|
|
if (!retUnwrapped && (isHybrid || result.__actions__)) {
|
|
var actions = result.__actions__ || (result.__actions__ = []);
|
|
actions.push({ 'func': thru, 'args': [interceptor], 'thisArg': lodash });
|
|
}
|
|
return new LodashWrapper(result, chainAll);
|
|
}
|
|
return this.thru(interceptor);
|
|
};
|
|
});
|
|
|
|
// Add `Array` and `String` methods to `lodash.prototype`.
|
|
arrayEach(['concat', 'join', 'pop', 'push', 'replace', 'shift', 'sort', 'splice', 'split', 'unshift'], function(methodName) {
|
|
var func = (/^(?:replace|split)$/.test(methodName) ? stringProto : arrayProto)[methodName],
|
|
chainName = /^(?:push|sort|unshift)$/.test(methodName) ? 'tap' : 'thru',
|
|
retUnwrapped = /^(?:join|pop|replace|shift)$/.test(methodName);
|
|
|
|
lodash.prototype[methodName] = function() {
|
|
var args = arguments;
|
|
if (retUnwrapped && !this.__chain__) {
|
|
return func.apply(this.value(), args);
|
|
}
|
|
return this[chainName](function(value) {
|
|
return func.apply(value, args);
|
|
});
|
|
};
|
|
});
|
|
|
|
// Map minified function names to their real names.
|
|
baseForOwn(LazyWrapper.prototype, function(func, methodName) {
|
|
var lodashFunc = lodash[methodName];
|
|
if (lodashFunc) {
|
|
var key = lodashFunc.name,
|
|
names = realNames[key] || (realNames[key] = []);
|
|
|
|
names.push({ 'name': methodName, 'func': lodashFunc });
|
|
}
|
|
});
|
|
|
|
realNames[createHybridWrapper(null, BIND_KEY_FLAG).name] = [{ 'name': 'wrapper', 'func': null }];
|
|
|
|
// Add functions to the lazy wrapper.
|
|
LazyWrapper.prototype.clone = lazyClone;
|
|
LazyWrapper.prototype.reverse = lazyReverse;
|
|
LazyWrapper.prototype.value = lazyValue;
|
|
|
|
// Add chaining functions to the `lodash` wrapper.
|
|
lodash.prototype.chain = wrapperChain;
|
|
lodash.prototype.commit = wrapperCommit;
|
|
lodash.prototype.plant = wrapperPlant;
|
|
lodash.prototype.reverse = wrapperReverse;
|
|
lodash.prototype.toString = wrapperToString;
|
|
lodash.prototype.run = lodash.prototype.toJSON = lodash.prototype.valueOf = lodash.prototype.value = wrapperValue;
|
|
|
|
// Add function aliases to the `lodash` wrapper.
|
|
lodash.prototype.collect = lodash.prototype.map;
|
|
lodash.prototype.head = lodash.prototype.first;
|
|
lodash.prototype.select = lodash.prototype.filter;
|
|
lodash.prototype.tail = lodash.prototype.rest;
|
|
|
|
return lodash;
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
// Export lodash.
|
|
var _ = runInContext();
|
|
|
|
// Some AMD build optimizers like r.js check for condition patterns like the following:
|
|
if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) {
|
|
// Expose lodash to the global object when an AMD loader is present to avoid
|
|
// errors in cases where lodash is loaded by a script tag and not intended
|
|
// as an AMD module. See http://requirejs.org/docs/errors.html#mismatch for
|
|
// more details.
|
|
root._ = _;
|
|
|
|
// Define as an anonymous module so, through path mapping, it can be
|
|
// referenced as the "underscore" module.
|
|
define(function() {
|
|
return _;
|
|
});
|
|
}
|
|
// Check for `exports` after `define` in case a build optimizer adds an `exports` object.
|
|
else if (freeExports && freeModule) {
|
|
// Export for Node.js or RingoJS.
|
|
if (moduleExports) {
|
|
(freeModule.exports = _)._ = _;
|
|
}
|
|
// Export for Narwhal or Rhino -require.
|
|
else {
|
|
freeExports._ = _;
|
|
}
|
|
}
|
|
else {
|
|
// Export for a browser or Rhino.
|
|
root._ = _;
|
|
}
|
|
}.call(this));
|
|
|
|
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
|
},{}],13:[function(require,module,exports){
|
|
/*
|
|
* Lexical analysis and token construction.
|
|
*/
|
|
|
|
"use strict";
|
|
|
|
var _ = require("lodash");
|
|
var events = require("events");
|
|
var reg = require("./reg.js");
|
|
var state = require("./state.js").state;
|
|
|
|
var unicodeData = require("../data/ascii-identifier-data.js");
|
|
var asciiIdentifierStartTable = unicodeData.asciiIdentifierStartTable;
|
|
var asciiIdentifierPartTable = unicodeData.asciiIdentifierPartTable;
|
|
var nonAsciiIdentifierStartTable = require("../data/non-ascii-identifier-start.js");
|
|
var nonAsciiIdentifierPartTable = require("../data/non-ascii-identifier-part-only.js");
|
|
|
|
// Some of these token types are from JavaScript Parser API
|
|
// while others are specific to JSHint parser.
|
|
// JS Parser API: https://developer.mozilla.org/en-US/docs/SpiderMonkey/Parser_API
|
|
|
|
var Token = {
|
|
Identifier: 1,
|
|
Punctuator: 2,
|
|
NumericLiteral: 3,
|
|
StringLiteral: 4,
|
|
Comment: 5,
|
|
Keyword: 6,
|
|
NullLiteral: 7,
|
|
BooleanLiteral: 8,
|
|
RegExp: 9,
|
|
TemplateHead: 10,
|
|
TemplateMiddle: 11,
|
|
TemplateTail: 12,
|
|
NoSubstTemplate: 13
|
|
};
|
|
|
|
var Context = {
|
|
Block: 1,
|
|
Template: 2
|
|
};
|
|
|
|
// Object that handles postponed lexing verifications that checks the parsed
|
|
// environment state.
|
|
|
|
function asyncTrigger() {
|
|
var _checks = [];
|
|
|
|
return {
|
|
push: function(fn) {
|
|
_checks.push(fn);
|
|
},
|
|
|
|
check: function() {
|
|
for (var check = 0; check < _checks.length; ++check) {
|
|
_checks[check]();
|
|
}
|
|
|
|
_checks.splice(0, _checks.length);
|
|
}
|
|
};
|
|
}
|
|
|
|
/*
|
|
* Lexer for JSHint.
|
|
*
|
|
* This object does a char-by-char scan of the provided source code
|
|
* and produces a sequence of tokens.
|
|
*
|
|
* var lex = new Lexer("var i = 0;");
|
|
* lex.start();
|
|
* lex.token(); // returns the next token
|
|
*
|
|
* You have to use the token() method to move the lexer forward
|
|
* but you don't have to use its return value to get tokens. In addition
|
|
* to token() method returning the next token, the Lexer object also
|
|
* emits events.
|
|
*
|
|
* lex.on("Identifier", function(data) {
|
|
* if (data.name.indexOf("_") >= 0) {
|
|
* // Produce a warning.
|
|
* }
|
|
* });
|
|
*
|
|
* Note that the token() method returns tokens in a JSLint-compatible
|
|
* format while the event emitter uses a slightly modified version of
|
|
* Mozilla's JavaScript Parser API. Eventually, we will move away from
|
|
* JSLint format.
|
|
*/
|
|
function Lexer(source) {
|
|
var lines = source;
|
|
|
|
if (typeof lines === "string") {
|
|
lines = lines
|
|
.replace(/\r\n/g, "\n")
|
|
.replace(/\r/g, "\n")
|
|
.split("\n");
|
|
}
|
|
|
|
// If the first line is a shebang (#!), make it a blank and move on.
|
|
// Shebangs are used by Node scripts.
|
|
|
|
if (lines[0] && lines[0].substr(0, 2) === "#!") {
|
|
if (lines[0].indexOf("node") !== -1) {
|
|
state.option.node = true;
|
|
}
|
|
lines[0] = "";
|
|
}
|
|
|
|
this.emitter = new events.EventEmitter();
|
|
this.source = source;
|
|
this.setLines(lines);
|
|
this.prereg = true;
|
|
|
|
this.line = 0;
|
|
this.char = 1;
|
|
this.from = 1;
|
|
this.input = "";
|
|
this.inComment = false;
|
|
this.context = [];
|
|
this.templateStarts = [];
|
|
|
|
for (var i = 0; i < state.option.indent; i += 1) {
|
|
state.tab += " ";
|
|
}
|
|
}
|
|
|
|
Lexer.prototype = {
|
|
_lines: [],
|
|
|
|
inContext: function(ctxType) {
|
|
return this.context.length > 0 && this.context[this.context.length - 1].type === ctxType;
|
|
},
|
|
|
|
pushContext: function(ctxType) {
|
|
this.context.push({ type: ctxType });
|
|
},
|
|
|
|
popContext: function() {
|
|
return this.context.pop();
|
|
},
|
|
|
|
isContext: function(context) {
|
|
return this.context.length > 0 && this.context[this.context.length - 1] === context;
|
|
},
|
|
|
|
currentContext: function() {
|
|
return this.context.length > 0 && this.context[this.context.length - 1];
|
|
},
|
|
|
|
getLines: function() {
|
|
this._lines = state.lines;
|
|
return this._lines;
|
|
},
|
|
|
|
setLines: function(val) {
|
|
this._lines = val;
|
|
state.lines = this._lines;
|
|
},
|
|
|
|
/*
|
|
* Return the next i character without actually moving the
|
|
* char pointer.
|
|
*/
|
|
peek: function(i) {
|
|
return this.input.charAt(i || 0);
|
|
},
|
|
|
|
/*
|
|
* Move the char pointer forward i times.
|
|
*/
|
|
skip: function(i) {
|
|
i = i || 1;
|
|
this.char += i;
|
|
this.input = this.input.slice(i);
|
|
},
|
|
|
|
/*
|
|
* Subscribe to a token event. The API for this method is similar
|
|
* Underscore.js i.e. you can subscribe to multiple events with
|
|
* one call:
|
|
*
|
|
* lex.on("Identifier Number", function(data) {
|
|
* // ...
|
|
* });
|
|
*/
|
|
on: function(names, listener) {
|
|
names.split(" ").forEach(function(name) {
|
|
this.emitter.on(name, listener);
|
|
}.bind(this));
|
|
},
|
|
|
|
/*
|
|
* Trigger a token event. All arguments will be passed to each
|
|
* listener.
|
|
*/
|
|
trigger: function() {
|
|
this.emitter.emit.apply(this.emitter, Array.prototype.slice.call(arguments));
|
|
},
|
|
|
|
/*
|
|
* Postpone a token event. the checking condition is set as
|
|
* last parameter, and the trigger function is called in a
|
|
* stored callback. To be later called using the check() function
|
|
* by the parser. This avoids parser's peek() to give the lexer
|
|
* a false context.
|
|
*/
|
|
triggerAsync: function(type, args, checks, fn) {
|
|
checks.push(function() {
|
|
if (fn()) {
|
|
this.trigger(type, args);
|
|
}
|
|
}.bind(this));
|
|
},
|
|
|
|
/*
|
|
* Extract a punctuator out of the next sequence of characters
|
|
* or return 'null' if its not possible.
|
|
*
|
|
* This method's implementation was heavily influenced by the
|
|
* scanPunctuator function in the Esprima parser's source code.
|
|
*/
|
|
scanPunctuator: function() {
|
|
var ch1 = this.peek();
|
|
var ch2, ch3, ch4;
|
|
|
|
switch (ch1) {
|
|
// Most common single-character punctuators
|
|
case ".":
|
|
if ((/^[0-9]$/).test(this.peek(1))) {
|
|
return null;
|
|
}
|
|
if (this.peek(1) === "." && this.peek(2) === ".") {
|
|
return {
|
|
type: Token.Punctuator,
|
|
value: "..."
|
|
};
|
|
}
|
|
/* falls through */
|
|
case "(":
|
|
case ")":
|
|
case ";":
|
|
case ",":
|
|
case "[":
|
|
case "]":
|
|
case ":":
|
|
case "~":
|
|
case "?":
|
|
return {
|
|
type: Token.Punctuator,
|
|
value: ch1
|
|
};
|
|
|
|
// A block/object opener
|
|
case "{":
|
|
this.pushContext(Context.Block);
|
|
return {
|
|
type: Token.Punctuator,
|
|
value: ch1
|
|
};
|
|
|
|
// A block/object closer
|
|
case "}":
|
|
if (this.inContext(Context.Block)) {
|
|
this.popContext();
|
|
}
|
|
return {
|
|
type: Token.Punctuator,
|
|
value: ch1
|
|
};
|
|
|
|
// A pound sign (for Node shebangs)
|
|
case "#":
|
|
return {
|
|
type: Token.Punctuator,
|
|
value: ch1
|
|
};
|
|
|
|
// We're at the end of input
|
|
case "":
|
|
return null;
|
|
}
|
|
|
|
// Peek more characters
|
|
|
|
ch2 = this.peek(1);
|
|
ch3 = this.peek(2);
|
|
ch4 = this.peek(3);
|
|
|
|
// 4-character punctuator: >>>=
|
|
|
|
if (ch1 === ">" && ch2 === ">" && ch3 === ">" && ch4 === "=") {
|
|
return {
|
|
type: Token.Punctuator,
|
|
value: ">>>="
|
|
};
|
|
}
|
|
|
|
// 3-character punctuators: === !== >>> <<= >>=
|
|
|
|
if (ch1 === "=" && ch2 === "=" && ch3 === "=") {
|
|
return {
|
|
type: Token.Punctuator,
|
|
value: "==="
|
|
};
|
|
}
|
|
|
|
if (ch1 === "!" && ch2 === "=" && ch3 === "=") {
|
|
return {
|
|
type: Token.Punctuator,
|
|
value: "!=="
|
|
};
|
|
}
|
|
|
|
if (ch1 === ">" && ch2 === ">" && ch3 === ">") {
|
|
return {
|
|
type: Token.Punctuator,
|
|
value: ">>>"
|
|
};
|
|
}
|
|
|
|
if (ch1 === "<" && ch2 === "<" && ch3 === "=") {
|
|
return {
|
|
type: Token.Punctuator,
|
|
value: "<<="
|
|
};
|
|
}
|
|
|
|
if (ch1 === ">" && ch2 === ">" && ch3 === "=") {
|
|
return {
|
|
type: Token.Punctuator,
|
|
value: ">>="
|
|
};
|
|
}
|
|
|
|
// Fat arrow punctuator
|
|
if (ch1 === "=" && ch2 === ">") {
|
|
return {
|
|
type: Token.Punctuator,
|
|
value: ch1 + ch2
|
|
};
|
|
}
|
|
|
|
// 2-character punctuators: <= >= == != ++ -- << >> && ||
|
|
// += -= *= %= &= |= ^= (but not /=, see below)
|
|
if (ch1 === ch2 && ("+-<>&|".indexOf(ch1) >= 0)) {
|
|
return {
|
|
type: Token.Punctuator,
|
|
value: ch1 + ch2
|
|
};
|
|
}
|
|
|
|
if ("<>=!+-*%&|^".indexOf(ch1) >= 0) {
|
|
if (ch2 === "=") {
|
|
return {
|
|
type: Token.Punctuator,
|
|
value: ch1 + ch2
|
|
};
|
|
}
|
|
|
|
return {
|
|
type: Token.Punctuator,
|
|
value: ch1
|
|
};
|
|
}
|
|
|
|
// Special case: /=.
|
|
|
|
if (ch1 === "/") {
|
|
if (ch2 === "=") {
|
|
return {
|
|
type: Token.Punctuator,
|
|
value: "/="
|
|
};
|
|
}
|
|
|
|
return {
|
|
type: Token.Punctuator,
|
|
value: "/"
|
|
};
|
|
}
|
|
|
|
return null;
|
|
},
|
|
|
|
/*
|
|
* Extract a comment out of the next sequence of characters and/or
|
|
* lines or return 'null' if its not possible. Since comments can
|
|
* span across multiple lines this method has to move the char
|
|
* pointer.
|
|
*
|
|
* In addition to normal JavaScript comments (// and /*) this method
|
|
* also recognizes JSHint- and JSLint-specific comments such as
|
|
* /*jshint, /*jslint, /*globals and so on.
|
|
*/
|
|
scanComments: function() {
|
|
var ch1 = this.peek();
|
|
var ch2 = this.peek(1);
|
|
var rest = this.input.substr(2);
|
|
var startLine = this.line;
|
|
var startChar = this.char;
|
|
|
|
// Create a comment token object and make sure it
|
|
// has all the data JSHint needs to work with special
|
|
// comments.
|
|
|
|
function commentToken(label, body, opt) {
|
|
var special = ["jshint", "jslint", "members", "member", "globals", "global", "exported"];
|
|
var isSpecial = false;
|
|
var value = label + body;
|
|
var commentType = "plain";
|
|
opt = opt || {};
|
|
|
|
if (opt.isMultiline) {
|
|
value += "*/";
|
|
}
|
|
|
|
body = body.replace(/\n/g, " ");
|
|
|
|
special.forEach(function(str) {
|
|
if (isSpecial) {
|
|
return;
|
|
}
|
|
|
|
// Don't recognize any special comments other than jshint for single-line
|
|
// comments. This introduced many problems with legit comments.
|
|
if (label === "//" && str !== "jshint") {
|
|
return;
|
|
}
|
|
|
|
if (body.charAt(str.length) === " " && body.substr(0, str.length) === str) {
|
|
isSpecial = true;
|
|
label = label + str;
|
|
body = body.substr(str.length);
|
|
}
|
|
|
|
if (!isSpecial && body.charAt(0) === " " && body.charAt(str.length + 1) === " " &&
|
|
body.substr(1, str.length) === str) {
|
|
isSpecial = true;
|
|
label = label + " " + str;
|
|
body = body.substr(str.length + 1);
|
|
}
|
|
|
|
if (!isSpecial) {
|
|
return;
|
|
}
|
|
|
|
switch (str) {
|
|
case "member":
|
|
commentType = "members";
|
|
break;
|
|
case "global":
|
|
commentType = "globals";
|
|
break;
|
|
default:
|
|
commentType = str;
|
|
}
|
|
});
|
|
|
|
return {
|
|
type: Token.Comment,
|
|
commentType: commentType,
|
|
value: value,
|
|
body: body,
|
|
isSpecial: isSpecial,
|
|
isMultiline: opt.isMultiline || false,
|
|
isMalformed: opt.isMalformed || false
|
|
};
|
|
}
|
|
|
|
// End of unbegun comment. Raise an error and skip that input.
|
|
if (ch1 === "*" && ch2 === "/") {
|
|
this.trigger("error", {
|
|
code: "E018",
|
|
line: startLine,
|
|
character: startChar
|
|
});
|
|
|
|
this.skip(2);
|
|
return null;
|
|
}
|
|
|
|
// Comments must start either with // or /*
|
|
if (ch1 !== "/" || (ch2 !== "*" && ch2 !== "/")) {
|
|
return null;
|
|
}
|
|
|
|
// One-line comment
|
|
if (ch2 === "/") {
|
|
this.skip(this.input.length); // Skip to the EOL.
|
|
return commentToken("//", rest);
|
|
}
|
|
|
|
var body = "";
|
|
|
|
/* Multi-line comment */
|
|
if (ch2 === "*") {
|
|
this.inComment = true;
|
|
this.skip(2);
|
|
|
|
while (this.peek() !== "*" || this.peek(1) !== "/") {
|
|
if (this.peek() === "") { // End of Line
|
|
body += "\n";
|
|
|
|
// If we hit EOF and our comment is still unclosed,
|
|
// trigger an error and end the comment implicitly.
|
|
if (!this.nextLine()) {
|
|
this.trigger("error", {
|
|
code: "E017",
|
|
line: startLine,
|
|
character: startChar
|
|
});
|
|
|
|
this.inComment = false;
|
|
return commentToken("/*", body, {
|
|
isMultiline: true,
|
|
isMalformed: true
|
|
});
|
|
}
|
|
} else {
|
|
body += this.peek();
|
|
this.skip();
|
|
}
|
|
}
|
|
|
|
this.skip(2);
|
|
this.inComment = false;
|
|
return commentToken("/*", body, { isMultiline: true });
|
|
}
|
|
},
|
|
|
|
/*
|
|
* Extract a keyword out of the next sequence of characters or
|
|
* return 'null' if its not possible.
|
|
*/
|
|
scanKeyword: function() {
|
|
var result = /^[a-zA-Z_$][a-zA-Z0-9_$]*/.exec(this.input);
|
|
var keywords = [
|
|
"if", "in", "do", "var", "for", "new",
|
|
"try", "let", "this", "else", "case",
|
|
"void", "with", "enum", "while", "break",
|
|
"catch", "throw", "const", "yield", "class",
|
|
"super", "return", "typeof", "delete",
|
|
"switch", "export", "import", "default",
|
|
"finally", "extends", "function", "continue",
|
|
"debugger", "instanceof"
|
|
];
|
|
|
|
if (result && keywords.indexOf(result[0]) >= 0) {
|
|
return {
|
|
type: Token.Keyword,
|
|
value: result[0]
|
|
};
|
|
}
|
|
|
|
return null;
|
|
},
|
|
|
|
/*
|
|
* Extract a JavaScript identifier out of the next sequence of
|
|
* characters or return 'null' if its not possible. In addition,
|
|
* to Identifier this method can also produce BooleanLiteral
|
|
* (true/false) and NullLiteral (null).
|
|
*/
|
|
scanIdentifier: function() {
|
|
var id = "";
|
|
var index = 0;
|
|
var type, char;
|
|
|
|
function isNonAsciiIdentifierStart(code) {
|
|
return nonAsciiIdentifierStartTable.indexOf(code) > -1;
|
|
}
|
|
|
|
function isNonAsciiIdentifierPart(code) {
|
|
return isNonAsciiIdentifierStart(code) || nonAsciiIdentifierPartTable.indexOf(code) > -1;
|
|
}
|
|
|
|
function isHexDigit(str) {
|
|
return (/^[0-9a-fA-F]$/).test(str);
|
|
}
|
|
|
|
var readUnicodeEscapeSequence = function() {
|
|
/*jshint validthis:true */
|
|
index += 1;
|
|
|
|
if (this.peek(index) !== "u") {
|
|
return null;
|
|
}
|
|
|
|
var ch1 = this.peek(index + 1);
|
|
var ch2 = this.peek(index + 2);
|
|
var ch3 = this.peek(index + 3);
|
|
var ch4 = this.peek(index + 4);
|
|
var code;
|
|
|
|
if (isHexDigit(ch1) && isHexDigit(ch2) && isHexDigit(ch3) && isHexDigit(ch4)) {
|
|
code = parseInt(ch1 + ch2 + ch3 + ch4, 16);
|
|
|
|
if (asciiIdentifierPartTable[code] || isNonAsciiIdentifierPart(code)) {
|
|
index += 5;
|
|
return "\\u" + ch1 + ch2 + ch3 + ch4;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
return null;
|
|
}.bind(this);
|
|
|
|
var getIdentifierStart = function() {
|
|
/*jshint validthis:true */
|
|
var chr = this.peek(index);
|
|
var code = chr.charCodeAt(0);
|
|
|
|
if (code === 92) {
|
|
return readUnicodeEscapeSequence();
|
|
}
|
|
|
|
if (code < 128) {
|
|
if (asciiIdentifierStartTable[code]) {
|
|
index += 1;
|
|
return chr;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
if (isNonAsciiIdentifierStart(code)) {
|
|
index += 1;
|
|
return chr;
|
|
}
|
|
|
|
return null;
|
|
}.bind(this);
|
|
|
|
var getIdentifierPart = function() {
|
|
/*jshint validthis:true */
|
|
var chr = this.peek(index);
|
|
var code = chr.charCodeAt(0);
|
|
|
|
if (code === 92) {
|
|
return readUnicodeEscapeSequence();
|
|
}
|
|
|
|
if (code < 128) {
|
|
if (asciiIdentifierPartTable[code]) {
|
|
index += 1;
|
|
return chr;
|
|
}
|
|
|
|
return null;
|
|
}
|
|
|
|
if (isNonAsciiIdentifierPart(code)) {
|
|
index += 1;
|
|
return chr;
|
|
}
|
|
|
|
return null;
|
|
}.bind(this);
|
|
|
|
function removeEscapeSequences(id) {
|
|
return id.replace(/\\u([0-9a-fA-F]{4})/g, function(m0, codepoint) {
|
|
return String.fromCharCode(parseInt(codepoint, 16));
|
|
});
|
|
}
|
|
|
|
char = getIdentifierStart();
|
|
if (char === null) {
|
|
return null;
|
|
}
|
|
|
|
id = char;
|
|
for (;;) {
|
|
char = getIdentifierPart();
|
|
|
|
if (char === null) {
|
|
break;
|
|
}
|
|
|
|
id += char;
|
|
}
|
|
|
|
switch (id) {
|
|
case "true":
|
|
case "false":
|
|
type = Token.BooleanLiteral;
|
|
break;
|
|
case "null":
|
|
type = Token.NullLiteral;
|
|
break;
|
|
default:
|
|
type = Token.Identifier;
|
|
}
|
|
|
|
return {
|
|
type: type,
|
|
value: removeEscapeSequences(id),
|
|
text: id,
|
|
tokenLength: id.length
|
|
};
|
|
},
|
|
|
|
/*
|
|
* Extract a numeric literal out of the next sequence of
|
|
* characters or return 'null' if its not possible. This method
|
|
* supports all numeric literals described in section 7.8.3
|
|
* of the EcmaScript 5 specification.
|
|
*
|
|
* This method's implementation was heavily influenced by the
|
|
* scanNumericLiteral function in the Esprima parser's source code.
|
|
*/
|
|
scanNumericLiteral: function() {
|
|
var index = 0;
|
|
var value = "";
|
|
var length = this.input.length;
|
|
var char = this.peek(index);
|
|
var bad;
|
|
var isAllowedDigit = isDecimalDigit;
|
|
var base = 10;
|
|
var isLegacy = false;
|
|
|
|
function isDecimalDigit(str) {
|
|
return (/^[0-9]$/).test(str);
|
|
}
|
|
|
|
function isOctalDigit(str) {
|
|
return (/^[0-7]$/).test(str);
|
|
}
|
|
|
|
function isBinaryDigit(str) {
|
|
return (/^[01]$/).test(str);
|
|
}
|
|
|
|
function isHexDigit(str) {
|
|
return (/^[0-9a-fA-F]$/).test(str);
|
|
}
|
|
|
|
function isIdentifierStart(ch) {
|
|
return (ch === "$") || (ch === "_") || (ch === "\\") ||
|
|
(ch >= "a" && ch <= "z") || (ch >= "A" && ch <= "Z");
|
|
}
|
|
|
|
// Numbers must start either with a decimal digit or a point.
|
|
|
|
if (char !== "." && !isDecimalDigit(char)) {
|
|
return null;
|
|
}
|
|
|
|
if (char !== ".") {
|
|
value = this.peek(index);
|
|
index += 1;
|
|
char = this.peek(index);
|
|
|
|
if (value === "0") {
|
|
// Base-16 numbers.
|
|
if (char === "x" || char === "X") {
|
|
isAllowedDigit = isHexDigit;
|
|
base = 16;
|
|
|
|
index += 1;
|
|
value += char;
|
|
}
|
|
|
|
// Base-8 numbers.
|
|
if (char === "o" || char === "O") {
|
|
isAllowedDigit = isOctalDigit;
|
|
base = 8;
|
|
|
|
if (!state.option.esnext) {
|
|
this.trigger("warning", {
|
|
code: "W119",
|
|
line: this.line,
|
|
character: this.char,
|
|
data: [ "Octal integer literal" ]
|
|
});
|
|
}
|
|
|
|
index += 1;
|
|
value += char;
|
|
}
|
|
|
|
// Base-2 numbers.
|
|
if (char === "b" || char === "B") {
|
|
isAllowedDigit = isBinaryDigit;
|
|
base = 2;
|
|
|
|
if (!state.option.esnext) {
|
|
this.trigger("warning", {
|
|
code: "W119",
|
|
line: this.line,
|
|
character: this.char,
|
|
data: [ "Binary integer literal" ]
|
|
});
|
|
}
|
|
|
|
index += 1;
|
|
value += char;
|
|
}
|
|
|
|
// Legacy base-8 numbers.
|
|
if (isOctalDigit(char)) {
|
|
isAllowedDigit = isOctalDigit;
|
|
base = 8;
|
|
isLegacy = true;
|
|
bad = false;
|
|
|
|
index += 1;
|
|
value += char;
|
|
}
|
|
|
|
// Decimal numbers that start with '0' such as '09' are illegal
|
|
// but we still parse them and return as malformed.
|
|
|
|
if (!isOctalDigit(char) && isDecimalDigit(char)) {
|
|
index += 1;
|
|
value += char;
|
|
}
|
|
}
|
|
|
|
while (index < length) {
|
|
char = this.peek(index);
|
|
|
|
if (isLegacy && isDecimalDigit(char)) {
|
|
// Numbers like '019' (note the 9) are not valid octals
|
|
// but we still parse them and mark as malformed.
|
|
bad = true;
|
|
} else if (!isAllowedDigit(char)) {
|
|
break;
|
|
}
|
|
value += char;
|
|
index += 1;
|
|
}
|
|
|
|
if (isAllowedDigit !== isDecimalDigit) {
|
|
if (!isLegacy && value.length <= 2) { // 0x
|
|
return {
|
|
type: Token.NumericLiteral,
|
|
value: value,
|
|
isMalformed: true
|
|
};
|
|
}
|
|
|
|
if (index < length) {
|
|
char = this.peek(index);
|
|
if (isIdentifierStart(char)) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
return {
|
|
type: Token.NumericLiteral,
|
|
value: value,
|
|
base: base,
|
|
isLegacy: isLegacy,
|
|
isMalformed: false
|
|
};
|
|
}
|
|
}
|
|
|
|
// Decimal digits.
|
|
|
|
if (char === ".") {
|
|
value += char;
|
|
index += 1;
|
|
|
|
while (index < length) {
|
|
char = this.peek(index);
|
|
if (!isDecimalDigit(char)) {
|
|
break;
|
|
}
|
|
value += char;
|
|
index += 1;
|
|
}
|
|
}
|
|
|
|
// Exponent part.
|
|
|
|
if (char === "e" || char === "E") {
|
|
value += char;
|
|
index += 1;
|
|
char = this.peek(index);
|
|
|
|
if (char === "+" || char === "-") {
|
|
value += this.peek(index);
|
|
index += 1;
|
|
}
|
|
|
|
char = this.peek(index);
|
|
if (isDecimalDigit(char)) {
|
|
value += char;
|
|
index += 1;
|
|
|
|
while (index < length) {
|
|
char = this.peek(index);
|
|
if (!isDecimalDigit(char)) {
|
|
break;
|
|
}
|
|
value += char;
|
|
index += 1;
|
|
}
|
|
} else {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
if (index < length) {
|
|
char = this.peek(index);
|
|
if (isIdentifierStart(char)) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
return {
|
|
type: Token.NumericLiteral,
|
|
value: value,
|
|
base: base,
|
|
isMalformed: !isFinite(value)
|
|
};
|
|
},
|
|
|
|
|
|
// Assumes previously parsed character was \ (=== '\\') and was not skipped.
|
|
scanEscapeSequence: function(checks) {
|
|
var allowNewLine = false;
|
|
var jump = 1;
|
|
this.skip();
|
|
var char = this.peek();
|
|
|
|
switch (char) {
|
|
case "'":
|
|
this.triggerAsync("warning", {
|
|
code: "W114",
|
|
line: this.line,
|
|
character: this.char,
|
|
data: [ "\\'" ]
|
|
}, checks, function() {return state.jsonMode; });
|
|
break;
|
|
case "b":
|
|
char = "\\b";
|
|
break;
|
|
case "f":
|
|
char = "\\f";
|
|
break;
|
|
case "n":
|
|
char = "\\n";
|
|
break;
|
|
case "r":
|
|
char = "\\r";
|
|
break;
|
|
case "t":
|
|
char = "\\t";
|
|
break;
|
|
case "0":
|
|
char = "\\0";
|
|
|
|
// Octal literals fail in strict mode.
|
|
// Check if the number is between 00 and 07.
|
|
var n = parseInt(this.peek(1), 10);
|
|
this.triggerAsync("warning", {
|
|
code: "W115",
|
|
line: this.line,
|
|
character: this.char
|
|
}, checks,
|
|
function() { return n >= 0 && n <= 7 && state.isStrict(); });
|
|
break;
|
|
case "u":
|
|
var hexCode = this.input.substr(1, 4);
|
|
var code = parseInt(hexCode, 16);
|
|
if (isNaN(code)) {
|
|
this.trigger("warning", {
|
|
code: "W052",
|
|
line: this.line,
|
|
character: this.char,
|
|
data: [ "u" + hexCode ]
|
|
});
|
|
}
|
|
char = String.fromCharCode(code);
|
|
jump = 5;
|
|
break;
|
|
case "v":
|
|
this.triggerAsync("warning", {
|
|
code: "W114",
|
|
line: this.line,
|
|
character: this.char,
|
|
data: [ "\\v" ]
|
|
}, checks, function() { return state.jsonMode; });
|
|
|
|
char = "\v";
|
|
break;
|
|
case "x":
|
|
var x = parseInt(this.input.substr(1, 2), 16);
|
|
|
|
this.triggerAsync("warning", {
|
|
code: "W114",
|
|
line: this.line,
|
|
character: this.char,
|
|
data: [ "\\x-" ]
|
|
}, checks, function() { return state.jsonMode; });
|
|
|
|
char = String.fromCharCode(x);
|
|
jump = 3;
|
|
break;
|
|
case "\\":
|
|
char = "\\\\";
|
|
break;
|
|
case "\"":
|
|
char = "\\\"";
|
|
break;
|
|
case "/":
|
|
break;
|
|
case "":
|
|
allowNewLine = true;
|
|
char = "";
|
|
break;
|
|
}
|
|
|
|
return { char: char, jump: jump, allowNewLine: allowNewLine };
|
|
},
|
|
|
|
/*
|
|
* Extract a template literal out of the next sequence of characters
|
|
* and/or lines or return 'null' if its not possible. Since template
|
|
* literals can span across multiple lines, this method has to move
|
|
* the char pointer.
|
|
*/
|
|
scanTemplateLiteral: function(checks) {
|
|
var tokenType;
|
|
var value = "";
|
|
var ch;
|
|
var startLine = this.line;
|
|
var startChar = this.char;
|
|
var depth = this.templateStarts.length;
|
|
|
|
if (!state.option.esnext) {
|
|
// Only lex template strings in ESNext mode.
|
|
return null;
|
|
} else if (this.peek() === "`") {
|
|
// Template must start with a backtick.
|
|
tokenType = Token.TemplateHead;
|
|
this.templateStarts.push({ line: this.line, char: this.char });
|
|
depth = this.templateStarts.length;
|
|
this.skip(1);
|
|
this.pushContext(Context.Template);
|
|
} else if (this.inContext(Context.Template) && this.peek() === "}") {
|
|
// If we're in a template context, and we have a '}', lex a TemplateMiddle.
|
|
tokenType = Token.TemplateMiddle;
|
|
} else {
|
|
// Go lex something else.
|
|
return null;
|
|
}
|
|
|
|
while (this.peek() !== "`") {
|
|
while ((ch = this.peek()) === "") {
|
|
value += "\n";
|
|
if (!this.nextLine()) {
|
|
// Unclosed template literal --- point to the starting "`"
|
|
var startPos = this.templateStarts.pop();
|
|
this.trigger("error", {
|
|
code: "E052",
|
|
line: startPos.line,
|
|
character: startPos.char
|
|
});
|
|
return {
|
|
type: tokenType,
|
|
value: value,
|
|
startLine: startLine,
|
|
startChar: startChar,
|
|
isUnclosed: true,
|
|
depth: depth,
|
|
context: this.popContext()
|
|
};
|
|
}
|
|
}
|
|
|
|
if (ch === '$' && this.peek(1) === '{') {
|
|
value += '${';
|
|
this.skip(2);
|
|
return {
|
|
type: tokenType,
|
|
value: value,
|
|
startLine: startLine,
|
|
startChar: startChar,
|
|
isUnclosed: false,
|
|
depth: depth,
|
|
context: this.currentContext()
|
|
};
|
|
} else if (ch === '\\') {
|
|
var escape = this.scanEscapeSequence(checks);
|
|
value += escape.char;
|
|
this.skip(escape.jump);
|
|
} else if (ch !== '`') {
|
|
// Otherwise, append the value and continue.
|
|
value += ch;
|
|
this.skip(1);
|
|
}
|
|
}
|
|
|
|
// Final value is either NoSubstTemplate or TemplateTail
|
|
tokenType = tokenType === Token.TemplateHead ? Token.NoSubstTemplate : Token.TemplateTail;
|
|
this.skip(1);
|
|
this.templateStarts.pop();
|
|
|
|
return {
|
|
type: tokenType,
|
|
value: value,
|
|
startLine: startLine,
|
|
startChar: startChar,
|
|
isUnclosed: false,
|
|
depth: depth,
|
|
context: this.popContext()
|
|
};
|
|
},
|
|
|
|
/*
|
|
* Extract a string out of the next sequence of characters and/or
|
|
* lines or return 'null' if its not possible. Since strings can
|
|
* span across multiple lines this method has to move the char
|
|
* pointer.
|
|
*
|
|
* This method recognizes pseudo-multiline JavaScript strings:
|
|
*
|
|
* var str = "hello\
|
|
* world";
|
|
*/
|
|
scanStringLiteral: function(checks) {
|
|
/*jshint loopfunc:true */
|
|
var quote = this.peek();
|
|
|
|
// String must start with a quote.
|
|
if (quote !== "\"" && quote !== "'") {
|
|
return null;
|
|
}
|
|
|
|
// In JSON strings must always use double quotes.
|
|
this.triggerAsync("warning", {
|
|
code: "W108",
|
|
line: this.line,
|
|
character: this.char // +1?
|
|
}, checks, function() { return state.jsonMode && quote !== "\""; });
|
|
|
|
var value = "";
|
|
var startLine = this.line;
|
|
var startChar = this.char;
|
|
var allowNewLine = false;
|
|
|
|
this.skip();
|
|
|
|
while (this.peek() !== quote) {
|
|
if (this.peek() === "") { // End Of Line
|
|
|
|
// If an EOL is not preceded by a backslash, show a warning
|
|
// and proceed like it was a legit multi-line string where
|
|
// author simply forgot to escape the newline symbol.
|
|
//
|
|
// Another approach is to implicitly close a string on EOL
|
|
// but it generates too many false positives.
|
|
|
|
if (!allowNewLine) {
|
|
this.trigger("warning", {
|
|
code: "W112",
|
|
line: this.line,
|
|
character: this.char
|
|
});
|
|
} else {
|
|
allowNewLine = false;
|
|
|
|
// Otherwise show a warning if multistr option was not set.
|
|
// For JSON, show warning no matter what.
|
|
|
|
this.triggerAsync("warning", {
|
|
code: "W043",
|
|
line: this.line,
|
|
character: this.char
|
|
}, checks, function() { return !state.option.multistr; });
|
|
|
|
this.triggerAsync("warning", {
|
|
code: "W042",
|
|
line: this.line,
|
|
character: this.char
|
|
}, checks, function() { return state.jsonMode && state.option.multistr; });
|
|
}
|
|
|
|
// If we get an EOF inside of an unclosed string, show an
|
|
// error and implicitly close it at the EOF point.
|
|
|
|
if (!this.nextLine()) {
|
|
this.trigger("error", {
|
|
code: "E029",
|
|
line: startLine,
|
|
character: startChar
|
|
});
|
|
|
|
return {
|
|
type: Token.StringLiteral,
|
|
value: value,
|
|
startLine: startLine,
|
|
startChar: startChar,
|
|
isUnclosed: true,
|
|
quote: quote
|
|
};
|
|
}
|
|
|
|
} else { // Any character other than End Of Line
|
|
|
|
allowNewLine = false;
|
|
var char = this.peek();
|
|
var jump = 1; // A length of a jump, after we're done
|
|
// parsing this character.
|
|
|
|
if (char < " ") {
|
|
// Warn about a control character in a string.
|
|
this.trigger("warning", {
|
|
code: "W113",
|
|
line: this.line,
|
|
character: this.char,
|
|
data: [ "<non-printable>" ]
|
|
});
|
|
}
|
|
|
|
// Special treatment for some escaped characters.
|
|
if (char === "\\") {
|
|
var parsed = this.scanEscapeSequence(checks);
|
|
char = parsed.char;
|
|
jump = parsed.jump;
|
|
allowNewLine = parsed.allowNewLine;
|
|
}
|
|
|
|
value += char;
|
|
this.skip(jump);
|
|
}
|
|
}
|
|
|
|
this.skip();
|
|
return {
|
|
type: Token.StringLiteral,
|
|
value: value,
|
|
startLine: startLine,
|
|
startChar: startChar,
|
|
isUnclosed: false,
|
|
quote: quote
|
|
};
|
|
},
|
|
|
|
/*
|
|
* Extract a regular expression out of the next sequence of
|
|
* characters and/or lines or return 'null' if its not possible.
|
|
*
|
|
* This method is platform dependent: it accepts almost any
|
|
* regular expression values but then tries to compile and run
|
|
* them using system's RegExp object. This means that there are
|
|
* rare edge cases where one JavaScript engine complains about
|
|
* your regular expression while others don't.
|
|
*/
|
|
scanRegExp: function() {
|
|
var index = 0;
|
|
var length = this.input.length;
|
|
var char = this.peek();
|
|
var value = char;
|
|
var body = "";
|
|
var flags = [];
|
|
var malformed = false;
|
|
var isCharSet = false;
|
|
var terminated;
|
|
|
|
var scanUnexpectedChars = function() {
|
|
// Unexpected control character
|
|
if (char < " ") {
|
|
malformed = true;
|
|
this.trigger("warning", {
|
|
code: "W048",
|
|
line: this.line,
|
|
character: this.char
|
|
});
|
|
}
|
|
|
|
// Unexpected escaped character
|
|
if (char === "<") {
|
|
malformed = true;
|
|
this.trigger("warning", {
|
|
code: "W049",
|
|
line: this.line,
|
|
character: this.char,
|
|
data: [ char ]
|
|
});
|
|
}
|
|
}.bind(this);
|
|
|
|
// Regular expressions must start with '/'
|
|
if (!this.prereg || char !== "/") {
|
|
return null;
|
|
}
|
|
|
|
index += 1;
|
|
terminated = false;
|
|
|
|
// Try to get everything in between slashes. A couple of
|
|
// cases aside (see scanUnexpectedChars) we don't really
|
|
// care whether the resulting expression is valid or not.
|
|
// We will check that later using the RegExp object.
|
|
|
|
while (index < length) {
|
|
char = this.peek(index);
|
|
value += char;
|
|
body += char;
|
|
|
|
if (isCharSet) {
|
|
if (char === "]") {
|
|
if (this.peek(index - 1) !== "\\" || this.peek(index - 2) === "\\") {
|
|
isCharSet = false;
|
|
}
|
|
}
|
|
|
|
if (char === "\\") {
|
|
index += 1;
|
|
char = this.peek(index);
|
|
body += char;
|
|
value += char;
|
|
|
|
scanUnexpectedChars();
|
|
}
|
|
|
|
index += 1;
|
|
continue;
|
|
}
|
|
|
|
if (char === "\\") {
|
|
index += 1;
|
|
char = this.peek(index);
|
|
body += char;
|
|
value += char;
|
|
|
|
scanUnexpectedChars();
|
|
|
|
if (char === "/") {
|
|
index += 1;
|
|
continue;
|
|
}
|
|
|
|
if (char === "[") {
|
|
index += 1;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
if (char === "[") {
|
|
isCharSet = true;
|
|
index += 1;
|
|
continue;
|
|
}
|
|
|
|
if (char === "/") {
|
|
body = body.substr(0, body.length - 1);
|
|
terminated = true;
|
|
index += 1;
|
|
break;
|
|
}
|
|
|
|
index += 1;
|
|
}
|
|
|
|
// A regular expression that was never closed is an
|
|
// error from which we cannot recover.
|
|
|
|
if (!terminated) {
|
|
this.trigger("error", {
|
|
code: "E015",
|
|
line: this.line,
|
|
character: this.from
|
|
});
|
|
|
|
return void this.trigger("fatal", {
|
|
line: this.line,
|
|
from: this.from
|
|
});
|
|
}
|
|
|
|
// Parse flags (if any).
|
|
|
|
while (index < length) {
|
|
char = this.peek(index);
|
|
if (!/[gim]/.test(char)) {
|
|
break;
|
|
}
|
|
flags.push(char);
|
|
value += char;
|
|
index += 1;
|
|
}
|
|
|
|
// Check regular expression for correctness.
|
|
|
|
try {
|
|
new RegExp(body, flags.join(""));
|
|
} catch (err) {
|
|
malformed = true;
|
|
this.trigger("error", {
|
|
code: "E016",
|
|
line: this.line,
|
|
character: this.char,
|
|
data: [ err.message ] // Platform dependent!
|
|
});
|
|
}
|
|
|
|
return {
|
|
type: Token.RegExp,
|
|
value: value,
|
|
flags: flags,
|
|
isMalformed: malformed
|
|
};
|
|
},
|
|
|
|
/*
|
|
* Scan for any occurrence of non-breaking spaces. Non-breaking spaces
|
|
* can be mistakenly typed on OS X with option-space. Non UTF-8 web
|
|
* pages with non-breaking pages produce syntax errors.
|
|
*/
|
|
scanNonBreakingSpaces: function() {
|
|
return state.option.nonbsp ?
|
|
this.input.search(/(\u00A0)/) : -1;
|
|
},
|
|
|
|
/*
|
|
* Scan for characters that get silently deleted by one or more browsers.
|
|
*/
|
|
scanUnsafeChars: function() {
|
|
return this.input.search(reg.unsafeChars);
|
|
},
|
|
|
|
/*
|
|
* Produce the next raw token or return 'null' if no tokens can be matched.
|
|
* This method skips over all space characters.
|
|
*/
|
|
next: function(checks) {
|
|
this.from = this.char;
|
|
|
|
// Move to the next non-space character.
|
|
var start;
|
|
if (/\s/.test(this.peek())) {
|
|
start = this.char;
|
|
|
|
while (/\s/.test(this.peek())) {
|
|
this.from += 1;
|
|
this.skip();
|
|
}
|
|
}
|
|
|
|
// Methods that work with multi-line structures and move the
|
|
// character pointer.
|
|
|
|
var match = this.scanComments() ||
|
|
this.scanStringLiteral(checks) ||
|
|
this.scanTemplateLiteral(checks);
|
|
|
|
if (match) {
|
|
return match;
|
|
}
|
|
|
|
// Methods that don't move the character pointer.
|
|
|
|
match =
|
|
this.scanRegExp() ||
|
|
this.scanPunctuator() ||
|
|
this.scanKeyword() ||
|
|
this.scanIdentifier() ||
|
|
this.scanNumericLiteral();
|
|
|
|
if (match) {
|
|
this.skip(match.tokenLength || match.value.length);
|
|
return match;
|
|
}
|
|
|
|
// No token could be matched, give up.
|
|
|
|
return null;
|
|
},
|
|
|
|
/*
|
|
* Switch to the next line and reset all char pointers. Once
|
|
* switched, this method also checks for other minor warnings.
|
|
*/
|
|
nextLine: function() {
|
|
var char;
|
|
|
|
if (this.line >= this.getLines().length) {
|
|
return false;
|
|
}
|
|
|
|
this.input = this.getLines()[this.line];
|
|
this.line += 1;
|
|
this.char = 1;
|
|
this.from = 1;
|
|
|
|
var inputTrimmed = this.input.trim();
|
|
|
|
var startsWith = function() {
|
|
return _.some(arguments, function(prefix) {
|
|
return inputTrimmed.indexOf(prefix) === 0;
|
|
});
|
|
};
|
|
|
|
var endsWith = function() {
|
|
return _.some(arguments, function(suffix) {
|
|
return inputTrimmed.indexOf(suffix, inputTrimmed.length - suffix.length) !== -1;
|
|
});
|
|
};
|
|
|
|
// If we are ignoring linter errors, replace the input with empty string
|
|
// if it doesn't already at least start or end a multi-line comment
|
|
if (state.ignoreLinterErrors === true) {
|
|
if (!startsWith("/*", "//") && !(this.inComment && endsWith("*/"))) {
|
|
this.input = "";
|
|
}
|
|
}
|
|
|
|
char = this.scanNonBreakingSpaces();
|
|
if (char >= 0) {
|
|
this.trigger("warning", { code: "W125", line: this.line, character: char + 1 });
|
|
}
|
|
|
|
this.input = this.input.replace(/\t/g, state.tab);
|
|
char = this.scanUnsafeChars();
|
|
|
|
if (char >= 0) {
|
|
this.trigger("warning", { code: "W100", line: this.line, character: char });
|
|
}
|
|
|
|
// If there is a limit on line length, warn when lines get too
|
|
// long.
|
|
|
|
if (state.option.maxlen && state.option.maxlen < this.input.length) {
|
|
var inComment = this.inComment ||
|
|
startsWith.call(inputTrimmed, "//") ||
|
|
startsWith.call(inputTrimmed, "/*");
|
|
|
|
var shouldTriggerError = !inComment || !reg.maxlenException.test(inputTrimmed);
|
|
|
|
if (shouldTriggerError) {
|
|
this.trigger("warning", { code: "W101", line: this.line, character: this.input.length });
|
|
}
|
|
}
|
|
|
|
return true;
|
|
},
|
|
|
|
/*
|
|
* This is simply a synonym for nextLine() method with a friendlier
|
|
* public name.
|
|
*/
|
|
start: function() {
|
|
this.nextLine();
|
|
},
|
|
|
|
/*
|
|
* Produce the next token. This function is called by advance() to get
|
|
* the next token. It returns a token in a JSLint-compatible format.
|
|
*/
|
|
token: function() {
|
|
/*jshint loopfunc:true */
|
|
var checks = asyncTrigger();
|
|
var token;
|
|
|
|
|
|
function isReserved(token, isProperty) {
|
|
if (!token.reserved) {
|
|
return false;
|
|
}
|
|
var meta = token.meta;
|
|
|
|
if (meta && meta.isFutureReservedWord && state.inES5()) {
|
|
// ES3 FutureReservedWord in an ES5 environment.
|
|
if (!meta.es5) {
|
|
return false;
|
|
}
|
|
|
|
// Some ES5 FutureReservedWord identifiers are active only
|
|
// within a strict mode environment.
|
|
if (meta.strictOnly) {
|
|
if (!state.option.strict && !state.isStrict()) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (isProperty) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// Produce a token object.
|
|
var create = function(type, value, isProperty, token) {
|
|
/*jshint validthis:true */
|
|
var obj;
|
|
|
|
if (type !== "(endline)" && type !== "(end)") {
|
|
this.prereg = false;
|
|
}
|
|
|
|
if (type === "(punctuator)") {
|
|
switch (value) {
|
|
case ".":
|
|
case ")":
|
|
case "~":
|
|
case "#":
|
|
case "]":
|
|
case "++":
|
|
case "--":
|
|
this.prereg = false;
|
|
break;
|
|
default:
|
|
this.prereg = true;
|
|
}
|
|
|
|
obj = Object.create(state.syntax[value] || state.syntax["(error)"]);
|
|
}
|
|
|
|
if (type === "(identifier)") {
|
|
if (value === "return" || value === "case" || value === "typeof") {
|
|
this.prereg = true;
|
|
}
|
|
|
|
if (_.has(state.syntax, value)) {
|
|
obj = Object.create(state.syntax[value] || state.syntax["(error)"]);
|
|
|
|
// If this can't be a reserved keyword, reset the object.
|
|
if (!isReserved(obj, isProperty && type === "(identifier)")) {
|
|
obj = null;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!obj) {
|
|
obj = Object.create(state.syntax[type]);
|
|
}
|
|
|
|
obj.identifier = (type === "(identifier)");
|
|
obj.type = obj.type || type;
|
|
obj.value = value;
|
|
obj.line = this.line;
|
|
obj.character = this.char;
|
|
obj.from = this.from;
|
|
if (obj.identifier && token) obj.raw_text = token.text || token.value;
|
|
if (token && token.startLine && token.startLine !== this.line) {
|
|
obj.startLine = token.startLine;
|
|
}
|
|
if (token && token.context) {
|
|
// Context of current token
|
|
obj.context = token.context;
|
|
}
|
|
if (token && token.depth) {
|
|
// Nested template depth
|
|
obj.depth = token.depth;
|
|
}
|
|
if (token && token.isUnclosed) {
|
|
// Mark token as unclosed string / template literal
|
|
obj.isUnclosed = token.isUnclosed;
|
|
}
|
|
|
|
if (isProperty && obj.identifier) {
|
|
obj.isProperty = isProperty;
|
|
}
|
|
|
|
obj.check = checks.check;
|
|
|
|
return obj;
|
|
}.bind(this);
|
|
|
|
for (;;) {
|
|
if (!this.input.length) {
|
|
if (this.nextLine()) {
|
|
return create("(endline)", "");
|
|
}
|
|
|
|
if (this.exhausted) {
|
|
return null;
|
|
}
|
|
|
|
this.exhausted = true;
|
|
return create("(end)", "");
|
|
}
|
|
|
|
token = this.next(checks);
|
|
|
|
if (!token) {
|
|
if (this.input.length) {
|
|
// Unexpected character.
|
|
this.trigger("error", {
|
|
code: "E024",
|
|
line: this.line,
|
|
character: this.char,
|
|
data: [ this.peek() ]
|
|
});
|
|
|
|
this.input = "";
|
|
}
|
|
|
|
continue;
|
|
}
|
|
|
|
switch (token.type) {
|
|
case Token.StringLiteral:
|
|
this.triggerAsync("String", {
|
|
line: this.line,
|
|
char: this.char,
|
|
from: this.from,
|
|
startLine: token.startLine,
|
|
startChar: token.startChar,
|
|
value: token.value,
|
|
quote: token.quote
|
|
}, checks, function() { return true; });
|
|
|
|
return create("(string)", token.value, null, token);
|
|
|
|
case Token.TemplateHead:
|
|
this.trigger("TemplateHead", {
|
|
line: this.line,
|
|
char: this.char,
|
|
from: this.from,
|
|
startLine: token.startLine,
|
|
startChar: token.startChar,
|
|
value: token.value
|
|
});
|
|
return create("(template)", token.value, null, token);
|
|
|
|
case Token.TemplateMiddle:
|
|
this.trigger("TemplateMiddle", {
|
|
line: this.line,
|
|
char: this.char,
|
|
from: this.from,
|
|
startLine: token.startLine,
|
|
startChar: token.startChar,
|
|
value: token.value
|
|
});
|
|
return create("(template middle)", token.value, null, token);
|
|
|
|
case Token.TemplateTail:
|
|
this.trigger("TemplateTail", {
|
|
line: this.line,
|
|
char: this.char,
|
|
from: this.from,
|
|
startLine: token.startLine,
|
|
startChar: token.startChar,
|
|
value: token.value
|
|
});
|
|
return create("(template tail)", token.value, null, token);
|
|
|
|
case Token.NoSubstTemplate:
|
|
this.trigger("NoSubstTemplate", {
|
|
line: this.line,
|
|
char: this.char,
|
|
from: this.from,
|
|
startLine: token.startLine,
|
|
startChar: token.startChar,
|
|
value: token.value
|
|
});
|
|
return create("(no subst template)", token.value, null, token);
|
|
|
|
case Token.Identifier:
|
|
this.trigger("Identifier", {
|
|
line: this.line,
|
|
char: this.char,
|
|
from: this.form,
|
|
name: token.value,
|
|
raw_name: token.text,
|
|
isProperty: state.tokens.curr.id === "."
|
|
});
|
|
|
|
/* falls through */
|
|
case Token.Keyword:
|
|
case Token.NullLiteral:
|
|
case Token.BooleanLiteral:
|
|
return create("(identifier)", token.value, state.tokens.curr.id === ".", token);
|
|
|
|
case Token.NumericLiteral:
|
|
if (token.isMalformed) {
|
|
this.trigger("warning", {
|
|
code: "W045",
|
|
line: this.line,
|
|
character: this.char,
|
|
data: [ token.value ]
|
|
});
|
|
}
|
|
|
|
this.triggerAsync("warning", {
|
|
code: "W114",
|
|
line: this.line,
|
|
character: this.char,
|
|
data: [ "0x-" ]
|
|
}, checks, function() { return token.base === 16 && state.jsonMode; });
|
|
|
|
this.triggerAsync("warning", {
|
|
code: "W115",
|
|
line: this.line,
|
|
character: this.char
|
|
}, checks, function() {
|
|
return state.isStrict() && token.base === 8 && token.isLegacy;
|
|
});
|
|
|
|
this.trigger("Number", {
|
|
line: this.line,
|
|
char: this.char,
|
|
from: this.from,
|
|
value: token.value,
|
|
base: token.base,
|
|
isMalformed: token.malformed
|
|
});
|
|
|
|
return create("(number)", token.value);
|
|
|
|
case Token.RegExp:
|
|
return create("(regexp)", token.value);
|
|
|
|
case Token.Comment:
|
|
state.tokens.curr.comment = true;
|
|
|
|
if (token.isSpecial) {
|
|
return {
|
|
id: '(comment)',
|
|
value: token.value,
|
|
body: token.body,
|
|
type: token.commentType,
|
|
isSpecial: token.isSpecial,
|
|
line: this.line,
|
|
character: this.char,
|
|
from: this.from
|
|
};
|
|
}
|
|
|
|
break;
|
|
|
|
case "":
|
|
break;
|
|
|
|
default:
|
|
return create("(punctuator)", token.value);
|
|
}
|
|
}
|
|
}
|
|
};
|
|
|
|
exports.Lexer = Lexer;
|
|
exports.Context = Context;
|
|
|
|
},{"../data/ascii-identifier-data.js":1,"../data/non-ascii-identifier-part-only.js":2,"../data/non-ascii-identifier-start.js":3,"./reg.js":17,"./state.js":18,"events":5,"lodash":12}],14:[function(require,module,exports){
|
|
"use strict";
|
|
|
|
var _ = require("lodash");
|
|
|
|
var errors = {
|
|
// JSHint options
|
|
E001: "Bad option: '{a}'.",
|
|
E002: "Bad option value.",
|
|
|
|
// JSHint input
|
|
E003: "Expected a JSON value.",
|
|
E004: "Input is neither a string nor an array of strings.",
|
|
E005: "Input is empty.",
|
|
E006: "Unexpected early end of program.",
|
|
|
|
// Strict mode
|
|
E007: "Missing \"use strict\" statement.",
|
|
E008: "Strict violation.",
|
|
E009: "Option 'validthis' can't be used in a global scope.",
|
|
E010: "'with' is not allowed in strict mode.",
|
|
|
|
// Constants
|
|
E011: "const '{a}' has already been declared.",
|
|
E012: "const '{a}' is initialized to 'undefined'.",
|
|
E013: "Attempting to override '{a}' which is a constant.",
|
|
|
|
// Regular expressions
|
|
E014: "A regular expression literal can be confused with '/='.",
|
|
E015: "Unclosed regular expression.",
|
|
E016: "Invalid regular expression.",
|
|
|
|
// Tokens
|
|
E017: "Unclosed comment.",
|
|
E018: "Unbegun comment.",
|
|
E019: "Unmatched '{a}'.",
|
|
E020: "Expected '{a}' to match '{b}' from line {c} and instead saw '{d}'.",
|
|
E021: "Expected '{a}' and instead saw '{b}'.",
|
|
E022: "Line breaking error '{a}'.",
|
|
E023: "Missing '{a}'.",
|
|
E024: "Unexpected '{a}'.",
|
|
E025: "Missing ':' on a case clause.",
|
|
E026: "Missing '}' to match '{' from line {a}.",
|
|
E027: "Missing ']' to match '[' from line {a}.",
|
|
E028: "Illegal comma.",
|
|
E029: "Unclosed string.",
|
|
|
|
// Everything else
|
|
E030: "Expected an identifier and instead saw '{a}'.",
|
|
E031: "Bad assignment.", // FIXME: Rephrase
|
|
E032: "Expected a small integer or 'false' and instead saw '{a}'.",
|
|
E033: "Expected an operator and instead saw '{a}'.",
|
|
E034: "get/set are ES5 features.",
|
|
E035: "Missing property name.",
|
|
E036: "Expected to see a statement and instead saw a block.",
|
|
E037: null,
|
|
E038: null,
|
|
E039: "Function declarations are not invocable. Wrap the whole function invocation in parens.",
|
|
E040: "Each value should have its own case label.",
|
|
E041: "Unrecoverable syntax error.",
|
|
E042: "Stopping.",
|
|
E043: "Too many errors.",
|
|
E044: null,
|
|
E045: "Invalid for each loop.",
|
|
E046: "A yield statement shall be within a generator function (with syntax: `function*`)",
|
|
E047: null, // Vacant
|
|
E048: "{a} declaration not directly within block.",
|
|
E049: "A {a} cannot be named '{b}'.",
|
|
E050: "Mozilla requires the yield expression to be parenthesized here.",
|
|
E051: "Regular parameters cannot come after default parameters.",
|
|
E052: "Unclosed template literal.",
|
|
E053: "Export declaration must be in global scope.",
|
|
E054: "Class properties must be methods. Expected '(' but instead saw '{a}'.",
|
|
E055: "The '{a}' option cannot be set after any executable code."
|
|
};
|
|
|
|
var warnings = {
|
|
W001: "'hasOwnProperty' is a really bad name.",
|
|
W002: "Value of '{a}' may be overwritten in IE 8 and earlier.",
|
|
W003: "'{a}' was used before it was defined.",
|
|
W004: "'{a}' is already defined.",
|
|
W005: "A dot following a number can be confused with a decimal point.",
|
|
W006: "Confusing minuses.",
|
|
W007: "Confusing plusses.",
|
|
W008: "A leading decimal point can be confused with a dot: '{a}'.",
|
|
W009: "The array literal notation [] is preferable.",
|
|
W010: "The object literal notation {} is preferable.",
|
|
W011: null,
|
|
W012: null,
|
|
W013: null,
|
|
W014: "Bad line breaking before '{a}'.",
|
|
W015: null,
|
|
W016: "Unexpected use of '{a}'.",
|
|
W017: "Bad operand.",
|
|
W018: "Confusing use of '{a}'.",
|
|
W019: "Use the isNaN function to compare with NaN.",
|
|
W020: "Read only.",
|
|
W021: "'{a}' is a function.",
|
|
W022: "Do not assign to the exception parameter.",
|
|
W023: "Expected an identifier in an assignment and instead saw a function invocation.",
|
|
W024: "Expected an identifier and instead saw '{a}' (a reserved word).",
|
|
W025: "Missing name in function declaration.",
|
|
W026: "Inner functions should be listed at the top of the outer function.",
|
|
W027: "Unreachable '{a}' after '{b}'.",
|
|
W028: "Label '{a}' on {b} statement.",
|
|
W030: "Expected an assignment or function call and instead saw an expression.",
|
|
W031: "Do not use 'new' for side effects.",
|
|
W032: "Unnecessary semicolon.",
|
|
W033: "Missing semicolon.",
|
|
W034: "Unnecessary directive \"{a}\".",
|
|
W035: "Empty block.",
|
|
W036: "Unexpected /*member '{a}'.",
|
|
W037: "'{a}' is a statement label.",
|
|
W038: "'{a}' used out of scope.",
|
|
W039: "'{a}' is not allowed.",
|
|
W040: "Possible strict violation.",
|
|
W041: "Use '{a}' to compare with '{b}'.",
|
|
W042: "Avoid EOL escaping.",
|
|
W043: "Bad escaping of EOL. Use option multistr if needed.",
|
|
W044: "Bad or unnecessary escaping.", /* TODO(caitp): remove W044 */
|
|
W045: "Bad number '{a}'.",
|
|
W046: "Don't use extra leading zeros '{a}'.",
|
|
W047: "A trailing decimal point can be confused with a dot: '{a}'.",
|
|
W048: "Unexpected control character in regular expression.",
|
|
W049: "Unexpected escaped character '{a}' in regular expression.",
|
|
W050: "JavaScript URL.",
|
|
W051: "Variables should not be deleted.",
|
|
W052: "Unexpected '{a}'.",
|
|
W053: "Do not use {a} as a constructor.",
|
|
W054: "The Function constructor is a form of eval.",
|
|
W055: "A constructor name should start with an uppercase letter.",
|
|
W056: "Bad constructor.",
|
|
W057: "Weird construction. Is 'new' necessary?",
|
|
W058: "Missing '()' invoking a constructor.",
|
|
W059: "Avoid arguments.{a}.",
|
|
W060: "document.write can be a form of eval.",
|
|
W061: "eval can be harmful.",
|
|
W062: "Wrap an immediate function invocation in parens " +
|
|
"to assist the reader in understanding that the expression " +
|
|
"is the result of a function, and not the function itself.",
|
|
W063: "Math is not a function.",
|
|
W064: "Missing 'new' prefix when invoking a constructor.",
|
|
W065: "Missing radix parameter.",
|
|
W066: "Implied eval. Consider passing a function instead of a string.",
|
|
W067: "Bad invocation.",
|
|
W068: "Wrapping non-IIFE function literals in parens is unnecessary.",
|
|
W069: "['{a}'] is better written in dot notation.",
|
|
W070: "Extra comma. (it breaks older versions of IE)",
|
|
W071: "This function has too many statements. ({a})",
|
|
W072: "This function has too many parameters. ({a})",
|
|
W073: "Blocks are nested too deeply. ({a})",
|
|
W074: "This function's cyclomatic complexity is too high. ({a})",
|
|
W075: "Duplicate {a} '{b}'.",
|
|
W076: "Unexpected parameter '{a}' in get {b} function.",
|
|
W077: "Expected a single parameter in set {a} function.",
|
|
W078: "Setter is defined without getter.",
|
|
W079: "Redefinition of '{a}'.",
|
|
W080: "It's not necessary to initialize '{a}' to 'undefined'.",
|
|
W081: null,
|
|
W082: "Function declarations should not be placed in blocks. " +
|
|
"Use a function expression or move the statement to the top of " +
|
|
"the outer function.",
|
|
W083: "Don't make functions within a loop.",
|
|
W084: "Expected a conditional expression and instead saw an assignment.",
|
|
W085: "Don't use 'with'.",
|
|
W086: "Expected a 'break' statement before '{a}'.",
|
|
W087: "Forgotten 'debugger' statement?",
|
|
W088: "Creating global 'for' variable. Should be 'for (var {a} ...'.",
|
|
W089: "The body of a for in should be wrapped in an if statement to filter " +
|
|
"unwanted properties from the prototype.",
|
|
W090: "'{a}' is not a statement label.",
|
|
W091: "'{a}' is out of scope.",
|
|
W093: "Did you mean to return a conditional instead of an assignment?",
|
|
W094: "Unexpected comma.",
|
|
W095: "Expected a string and instead saw {a}.",
|
|
W096: "The '{a}' key may produce unexpected results.",
|
|
W097: "Use the function form of \"use strict\".",
|
|
W098: "'{a}' is defined but never used.",
|
|
W099: null,
|
|
W100: "This character may get silently deleted by one or more browsers.",
|
|
W101: "Line is too long.",
|
|
W102: null,
|
|
W103: "The '{a}' property is deprecated.",
|
|
W104: "'{a}' is available in ES6 (use esnext option) or Mozilla JS extensions (use moz).",
|
|
W105: "Unexpected {a} in '{b}'.",
|
|
W106: "Identifier '{a}' is not in camel case.",
|
|
W107: "Script URL.",
|
|
W108: "Strings must use doublequote.",
|
|
W109: "Strings must use singlequote.",
|
|
W110: "Mixed double and single quotes.",
|
|
W112: "Unclosed string.",
|
|
W113: "Control character in string: {a}.",
|
|
W114: "Avoid {a}.",
|
|
W115: "Octal literals are not allowed in strict mode.",
|
|
W116: "Expected '{a}' and instead saw '{b}'.",
|
|
W117: "'{a}' is not defined.",
|
|
W118: "'{a}' is only available in Mozilla JavaScript extensions (use moz option).",
|
|
W119: "'{a}' is only available in ES6 (use esnext option).",
|
|
W120: "You might be leaking a variable ({a}) here.",
|
|
W121: "Extending prototype of native object: '{a}'.",
|
|
W122: "Invalid typeof value '{a}'",
|
|
W123: "'{a}' is already defined in outer scope.",
|
|
W124: "A generator function shall contain a yield statement.",
|
|
W125: "This line contains non-breaking spaces: http://jshint.com/doc/options/#nonbsp",
|
|
W126: "Unnecessary grouping operator.",
|
|
W127: "Unexpected use of a comma operator.",
|
|
W128: "Empty array elements require elision=true.",
|
|
W129: "'{a}' is defined in a future version of JavaScript. Use a " +
|
|
"different variable name to avoid migration issues.",
|
|
W130: "Invalid element after rest element.",
|
|
W131: "Invalid parameter after rest parameter.",
|
|
W132: "`var` declarations are forbidden. Use `let` or `const` instead.",
|
|
W133: "Invalid for-{a} loop left-hand-side: {b}.",
|
|
W134: "The '{a}' option is only available when linting ECMAScript {b} code."
|
|
};
|
|
|
|
var info = {
|
|
I001: "Comma warnings can be turned off with 'laxcomma'.",
|
|
I002: null,
|
|
I003: "ES5 option is now set per default"
|
|
};
|
|
|
|
exports.errors = {};
|
|
exports.warnings = {};
|
|
exports.info = {};
|
|
|
|
_.each(errors, function(desc, code) {
|
|
exports.errors[code] = { code: code, desc: desc };
|
|
});
|
|
|
|
_.each(warnings, function(desc, code) {
|
|
exports.warnings[code] = { code: code, desc: desc };
|
|
});
|
|
|
|
_.each(info, function(desc, code) {
|
|
exports.info[code] = { code: code, desc: desc };
|
|
});
|
|
|
|
},{"lodash":12}],15:[function(require,module,exports){
|
|
"use strict";
|
|
|
|
function NameStack() {
|
|
this._stack = [];
|
|
}
|
|
|
|
Object.defineProperty(NameStack.prototype, "length", {
|
|
get: function() {
|
|
return this._stack.length;
|
|
}
|
|
});
|
|
|
|
/**
|
|
* Create a new entry in the stack. Useful for tracking names across
|
|
* expressions.
|
|
*/
|
|
NameStack.prototype.push = function() {
|
|
this._stack.push(null);
|
|
};
|
|
|
|
/**
|
|
* Discard the most recently-created name on the stack.
|
|
*/
|
|
NameStack.prototype.pop = function() {
|
|
this._stack.pop();
|
|
};
|
|
|
|
/**
|
|
* Update the most recent name on the top of the stack.
|
|
*
|
|
* @param {object} token The token to consider as the source for the most
|
|
* recent name.
|
|
*/
|
|
NameStack.prototype.set = function(token) {
|
|
this._stack[this.length - 1] = token;
|
|
};
|
|
|
|
/**
|
|
* Generate a string representation of the most recent name.
|
|
*
|
|
* @returns {string}
|
|
*/
|
|
NameStack.prototype.infer = function() {
|
|
var nameToken = this._stack[this.length - 1];
|
|
var prefix = "";
|
|
var type;
|
|
|
|
// During expected operation, the topmost entry on the stack will only
|
|
// reflect the current function's name when the function is declared without
|
|
// the `function` keyword (i.e. for in-line accessor methods). In other
|
|
// cases, the `function` expression itself will introduce an empty entry on
|
|
// the top of the stack, and this should be ignored.
|
|
if (!nameToken || nameToken.type === "class") {
|
|
nameToken = this._stack[this.length - 2];
|
|
}
|
|
|
|
if (!nameToken) {
|
|
return "(empty)";
|
|
}
|
|
|
|
type = nameToken.type;
|
|
|
|
if (type !== "(string)" && type !== "(number)" && type !== "(identifier)" && type !== "default") {
|
|
return "(expression)";
|
|
}
|
|
|
|
if (nameToken.accessorType) {
|
|
prefix = nameToken.accessorType + " ";
|
|
}
|
|
|
|
return prefix + nameToken.value;
|
|
};
|
|
|
|
module.exports = NameStack;
|
|
|
|
},{}],16:[function(require,module,exports){
|
|
"use strict";
|
|
|
|
// These are the JSHint boolean options.
|
|
exports.bool = {
|
|
enforcing: {
|
|
|
|
/**
|
|
* This option prohibits the use of bitwise operators such as `^` (XOR),
|
|
* `|` (OR) and others. Bitwise operators are very rare in JavaScript
|
|
* programs and quite often `&` is simply a mistyped `&&`.
|
|
*/
|
|
bitwise : true,
|
|
|
|
/**
|
|
*
|
|
* This options prohibits overwriting prototypes of native objects such as
|
|
* `Array`, `Date` and so on.
|
|
*
|
|
* // jshint freeze:true
|
|
* Array.prototype.count = function (value) { return 4; };
|
|
* // -> Warning: Extending prototype of native object: 'Array'.
|
|
*/
|
|
freeze : true,
|
|
|
|
/**
|
|
* This option allows you to force all variable names to use either
|
|
* camelCase style or UPPER_CASE with underscores.
|
|
*
|
|
* @deprecated JSHint is limiting its scope to issues of code correctness.
|
|
* If you would like to enforce rules relating to code style,
|
|
* check out [the JSCS
|
|
* project](https://github.com/jscs-dev/node-jscs).
|
|
*/
|
|
camelcase : true,
|
|
|
|
/**
|
|
* This option requires you to always put curly braces around blocks in
|
|
* loops and conditionals. JavaScript allows you to omit curly braces when
|
|
* the block consists of only one statement, for example:
|
|
*
|
|
* while (day)
|
|
* shuffle();
|
|
*
|
|
* However, in some circumstances, it can lead to bugs (you'd think that
|
|
* `sleep()` is a part of the loop while in reality it is not):
|
|
*
|
|
* while (day)
|
|
* shuffle();
|
|
* sleep();
|
|
*/
|
|
curly : true,
|
|
|
|
/**
|
|
* This options prohibits the use of `==` and `!=` in favor of `===` and
|
|
* `!==`. The former try to coerce values before comparing them which can
|
|
* lead to some unexpected results. The latter don't do any coercion so
|
|
* they are generally safer. If you would like to learn more about type
|
|
* coercion in JavaScript, we recommend [Truth, Equality and
|
|
* JavaScript](http://javascriptweblog.wordpress.com/2011/02/07/truth-equality-and-javascript/)
|
|
* by Angus Croll.
|
|
*/
|
|
eqeqeq : true,
|
|
|
|
/**
|
|
* This option enables warnings about the use of identifiers which are
|
|
* defined in future versions of JavaScript. Although overwriting them has
|
|
* no effect in contexts where they are not implemented, this practice can
|
|
* cause issues when migrating codebases to newer versions of the language.
|
|
*/
|
|
futurehostile: true,
|
|
|
|
/**
|
|
* This option suppresses warnings about invalid `typeof` operator values.
|
|
* This operator has only [a limited set of possible return
|
|
* values](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/typeof).
|
|
* By default, JSHint warns when you compare its result with an invalid
|
|
* value which often can be a typo.
|
|
*
|
|
* // 'fuction' instead of 'function'
|
|
* if (typeof a == "fuction") { // Invalid typeof value 'fuction'
|
|
* // ...
|
|
* }
|
|
*
|
|
* Do not use this option unless you're absolutely sure you don't want
|
|
* these checks.
|
|
*/
|
|
notypeof : true,
|
|
|
|
/**
|
|
* This option tells JSHint that your code needs to adhere to ECMAScript 3
|
|
* specification. Use this option if you need your program to be executable
|
|
* in older browsers—such as Internet Explorer 6/7/8/9—and other legacy
|
|
* JavaScript environments.
|
|
*/
|
|
es3 : true,
|
|
|
|
/**
|
|
* This option enables syntax first defined in [the ECMAScript 5.1
|
|
* specification](http://es5.github.io/). This includes allowing reserved
|
|
* keywords as object properties.
|
|
*/
|
|
es5 : true,
|
|
|
|
/**
|
|
* This option requires all `for in` loops to filter object's items. The
|
|
* for in statement allows for looping through the names of all of the
|
|
* properties of an object including those inherited through the prototype
|
|
* chain. This behavior can lead to unexpected items in your object so it
|
|
* is generally safer to always filter inherited properties out as shown in
|
|
* the example:
|
|
*
|
|
* for (key in obj) {
|
|
* if (obj.hasOwnProperty(key)) {
|
|
* // We are sure that obj[key] belongs to the object and was not inherited.
|
|
* }
|
|
* }
|
|
*
|
|
* For more in-depth understanding of `for in` loops in JavaScript, read
|
|
* [Exploring JavaScript for-in
|
|
* loops](http://javascriptweblog.wordpress.com/2011/01/04/exploring-javascript-for-in-loops/)
|
|
* by Angus Croll.
|
|
*/
|
|
forin : true,
|
|
|
|
/**
|
|
* This option suppresses warnings about declaring variables inside of
|
|
* control
|
|
* structures while accessing them later from the outside. Even though
|
|
* JavaScript has only two real scopes—global and function—such practice
|
|
* leads to confusion among people new to the language and hard-to-debug
|
|
* bugs. This is why, by default, JSHint warns about variables that are
|
|
* used outside of their intended scope.
|
|
*
|
|
* function test() {
|
|
* if (true) {
|
|
* var x = 0;
|
|
* }
|
|
*
|
|
* x += 1; // Default: 'x' used out of scope.
|
|
* // No warning when funcscope:true
|
|
* }
|
|
*/
|
|
funcscope : true,
|
|
|
|
/**
|
|
* This option prohibits the use of immediate function invocations without
|
|
* wrapping them in parentheses. Wrapping parentheses assists readers of
|
|
* your code in understanding that the expression is the result of a
|
|
* function, and not the function itself.
|
|
*
|
|
* @deprecated JSHint is limiting its scope to issues of code correctness.
|
|
* If you would like to enforce rules relating to code style,
|
|
* check out [the JSCS
|
|
* project](https://github.com/jscs-dev/node-jscs).
|
|
*/
|
|
immed : true,
|
|
|
|
/**
|
|
* This option suppresses warnings about the `__iterator__` property. This
|
|
* property is not supported by all browsers so use it carefully.
|
|
*/
|
|
iterator : true,
|
|
|
|
/**
|
|
* This option requires you to capitalize names of constructor functions.
|
|
* Capitalizing functions that are intended to be used with `new` operator
|
|
* is just a convention that helps programmers to visually distinguish
|
|
* constructor functions from other types of functions to help spot
|
|
* mistakes when using `this`.
|
|
*
|
|
* Not doing so won't break your code in any browsers or environments but
|
|
* it will be a bit harder to figure out—by reading the code—if the
|
|
* function was supposed to be used with or without new. And this is
|
|
* important because when the function that was intended to be used with
|
|
* `new` is used without it, `this` will point to the global object instead
|
|
* of a new object.
|
|
*
|
|
* @deprecated JSHint is limiting its scope to issues of code correctness.
|
|
* If you would like to enforce rules relating to code style,
|
|
* check out [the JSCS
|
|
* project](https://github.com/jscs-dev/node-jscs).
|
|
*/
|
|
newcap : true,
|
|
|
|
/**
|
|
* This option prohibits the use of `arguments.caller` and
|
|
* `arguments.callee`. Both `.caller` and `.callee` make quite a few
|
|
* optimizations impossible so they were deprecated in future versions of
|
|
* JavaScript. In fact, ECMAScript 5 forbids the use of `arguments.callee`
|
|
* in strict mode.
|
|
*/
|
|
noarg : true,
|
|
|
|
/**
|
|
* This option prohibits the use of the comma operator. When misused, the
|
|
* comma operator can obscure the value of a statement and promote
|
|
* incorrect code.
|
|
*/
|
|
nocomma : true,
|
|
|
|
/**
|
|
* This option warns when you have an empty block in your code. JSLint was
|
|
* originally warning for all empty blocks and we simply made it optional.
|
|
* There were no studies reporting that empty blocks in JavaScript break
|
|
* your code in any way.
|
|
*
|
|
* @deprecated JSHint is limiting its scope to issues of code correctness.
|
|
* If you would like to enforce rules relating to code style,
|
|
* check out [the JSCS
|
|
* project](https://github.com/jscs-dev/node-jscs).
|
|
*/
|
|
noempty : true,
|
|
|
|
/**
|
|
* This option warns about "non-breaking whitespace" characters. These
|
|
* characters can be entered with option-space on Mac computers and have a
|
|
* potential of breaking non-UTF8 web pages.
|
|
*/
|
|
nonbsp : true,
|
|
|
|
/**
|
|
* This option prohibits the use of constructor functions for side-effects.
|
|
* Some people like to call constructor functions without assigning its
|
|
* result to any variable:
|
|
*
|
|
* new MyConstructor();
|
|
*
|
|
* There is no advantage in this approach over simply calling
|
|
* `MyConstructor` since the object that the operator `new` creates isn't
|
|
* used anywhere so you should generally avoid constructors like this one.
|
|
*/
|
|
nonew : true,
|
|
|
|
/**
|
|
* This option prohibits the use of explicitly undeclared variables. This
|
|
* option is very useful for spotting leaking and mistyped variables.
|
|
*
|
|
* // jshint undef:true
|
|
*
|
|
* function test() {
|
|
* var myVar = 'Hello, World';
|
|
* console.log(myvar); // Oops, typoed here. JSHint with undef will complain
|
|
* }
|
|
*
|
|
* If your variable is defined in another file, you can use the `global`
|
|
* directive to tell JSHint about it.
|
|
*/
|
|
undef : true,
|
|
|
|
/**
|
|
* This option prohibits the use of the grouping operator when it is not
|
|
* strictly required. Such usage commonly reflects a misunderstanding of
|
|
* unary operators, for example:
|
|
*
|
|
* // jshint singleGroups: true
|
|
*
|
|
* delete(obj.attr); // Warning: Unnecessary grouping operator.
|
|
*/
|
|
singleGroups: false,
|
|
|
|
/**
|
|
* This option requires all functions to run in ECMAScript 5's strict mode.
|
|
* [Strict mode](https://developer.mozilla.org/en/JavaScript/Strict_mode)
|
|
* is a way to opt in to a restricted variant of JavaScript. Strict mode
|
|
* eliminates some JavaScript pitfalls that didn't cause errors by changing
|
|
* them to produce errors. It also fixes mistakes that made it difficult
|
|
* for the JavaScript engines to perform certain optimizations.
|
|
*
|
|
* *Note:* This option enables strict mode for function scope only. It
|
|
* *prohibits* the global scoped strict mode because it might break
|
|
* third-party widgets on your page. If you really want to use global
|
|
* strict mode, see the *globalstrict* option.
|
|
*/
|
|
strict : true,
|
|
|
|
/**
|
|
* When set to true, the use of VariableStatements are forbidden.
|
|
* For example:
|
|
*
|
|
* // jshint varstmt: true
|
|
*
|
|
* var a; // Warning: `var` declarations are forbidden. Use `let` or `const` instead.
|
|
*/
|
|
varstmt: false,
|
|
|
|
/**
|
|
* This option is a short hand for the most strict JSHint configuration as
|
|
* available in JSHint version 2.6.3. It enables all enforcing options and
|
|
* disables all relaxing options that were defined in that release.
|
|
*
|
|
* @deprecated The option cannot be maintained without automatically opting
|
|
* users in to new features. This can lead to unexpected
|
|
* warnings/errors in when upgrading between minor versions of
|
|
* JSHint.
|
|
*/
|
|
enforceall : false
|
|
},
|
|
relaxing: {
|
|
|
|
/**
|
|
* This option suppresses warnings about missing semicolons. There is a lot
|
|
* of FUD about semicolon spread by quite a few people in the community.
|
|
* The common myths are that semicolons are required all the time (they are
|
|
* not) and that they are unreliable. JavaScript has rules about semicolons
|
|
* which are followed by *all* browsers so it is up to you to decide
|
|
* whether you should or should not use semicolons in your code.
|
|
*
|
|
* For more information about semicolons in JavaScript read [An Open Letter
|
|
* to JavaScript Leaders Regarding
|
|
* Semicolons](http://blog.izs.me/post/2353458699/an-open-letter-to-javascript-leaders-regarding)
|
|
* by Isaac Schlueter and [JavaScript Semicolon
|
|
* Insertion](http://inimino.org/~inimino/blog/javascript_semicolons).
|
|
*/
|
|
asi : true,
|
|
|
|
/**
|
|
* This option suppresses warnings about multi-line strings. Multi-line
|
|
* strings can be dangerous in JavaScript because all hell breaks loose if
|
|
* you accidentally put a whitespace in between the escape character (`\`)
|
|
* and a new line.
|
|
*
|
|
* Note that even though this option allows correct multi-line strings, it
|
|
* still warns about multi-line strings without escape characters or with
|
|
* anything in between the escape character and a whitespace.
|
|
*
|
|
* // jshint multistr:true
|
|
*
|
|
* var text = "Hello\
|
|
* World"; // All good.
|
|
*
|
|
* text = "Hello
|
|
* World"; // Warning, no escape character.
|
|
*
|
|
* text = "Hello\
|
|
* World"; // Warning, there is a space after \
|
|
*
|
|
* @deprecated JSHint is limiting its scope to issues of code correctness.
|
|
* If you would like to enforce rules relating to code style,
|
|
* check out [the JSCS
|
|
* project](https://github.com/jscs-dev/node-jscs).
|
|
*/
|
|
multistr : true,
|
|
|
|
/**
|
|
* This option suppresses warnings about the `debugger` statements in your
|
|
* code.
|
|
*/
|
|
debug : true,
|
|
|
|
/**
|
|
* This option suppresses warnings about the use of assignments in cases
|
|
* where comparisons are expected. More often than not, code like `if (a =
|
|
* 10) {}` is a typo. However, it can be useful in cases like this one:
|
|
*
|
|
* for (var i = 0, person; person = people[i]; i++) {}
|
|
*
|
|
* You can silence this error on a per-use basis by surrounding the assignment
|
|
* with parenthesis, such as:
|
|
*
|
|
* for (var i = 0, person; (person = people[i]); i++) {}
|
|
*/
|
|
boss : true,
|
|
|
|
/**
|
|
* This option suppresses warnings about the use of `eval`. The use of
|
|
* `eval` is discouraged because it can make your code vulnerable to
|
|
* various injection attacks and it makes it hard for JavaScript
|
|
* interpreter to do certain optimizations.
|
|
*/
|
|
evil : true,
|
|
|
|
/**
|
|
* This option suppresses warnings about the use of global strict mode.
|
|
* Global strict mode can break third-party widgets so it is not
|
|
* recommended.
|
|
*
|
|
* For more info about strict mode see the `strict` option.
|
|
*/
|
|
globalstrict: true,
|
|
|
|
/**
|
|
* This option prohibits the use of unary increment and decrement
|
|
* operators. Some people think that `++` and `--` reduces the quality of
|
|
* their coding styles and there are programming languages—such as
|
|
* Python—that go completely without these operators.
|
|
*/
|
|
plusplus : true,
|
|
|
|
/**
|
|
* This option suppresses warnings about the `__proto__` property.
|
|
*/
|
|
proto : true,
|
|
|
|
/**
|
|
* This option suppresses warnings about the use of script-targeted
|
|
* URLs—such as `javascript:...`.
|
|
*/
|
|
scripturl : true,
|
|
|
|
/**
|
|
* This option suppresses warnings about using `[]` notation when it can be
|
|
* expressed in dot notation: `person['name']` vs. `person.name`.
|
|
*
|
|
* @deprecated JSHint is limiting its scope to issues of code correctness.
|
|
* If you would like to enforce rules relating to code style,
|
|
* check out [the JSCS
|
|
* project](https://github.com/jscs-dev/node-jscs).
|
|
*/
|
|
sub : true,
|
|
|
|
/**
|
|
* This option suppresses warnings about "weird" constructions like
|
|
* `new function () { ... }` and `new Object;`. Such constructions are
|
|
* sometimes used to produce singletons in JavaScript:
|
|
*
|
|
* var singleton = new function() {
|
|
* var privateVar;
|
|
*
|
|
* this.publicMethod = function () {}
|
|
* this.publicMethod2 = function () {}
|
|
* };
|
|
*/
|
|
supernew : true,
|
|
|
|
/**
|
|
* This option suppresses most of the warnings about possibly unsafe line
|
|
* breakings in your code. It doesn't suppress warnings about comma-first
|
|
* coding style. To suppress those you have to use `laxcomma` (see below).
|
|
*
|
|
* @deprecated JSHint is limiting its scope to issues of code correctness.
|
|
* If you would like to enforce rules relating to code style,
|
|
* check out [the JSCS
|
|
* project](https://github.com/jscs-dev/node-jscs).
|
|
*/
|
|
laxbreak : true,
|
|
|
|
/**
|
|
* This option suppresses warnings about comma-first coding style:
|
|
*
|
|
* var obj = {
|
|
* name: 'Anton'
|
|
* , handle: 'valueof'
|
|
* , role: 'SW Engineer'
|
|
* };
|
|
*
|
|
* @deprecated JSHint is limiting its scope to issues of code correctness.
|
|
* If you would like to enforce rules relating to code style,
|
|
* check out [the JSCS
|
|
* project](https://github.com/jscs-dev/node-jscs).
|
|
*/
|
|
laxcomma : true,
|
|
|
|
/**
|
|
* This option suppresses warnings about possible strict violations when
|
|
* the code is running in strict mode and you use `this` in a
|
|
* non-constructor function. You should use this option—in a function scope
|
|
* only—when you are positive that your use of `this` is valid in the
|
|
* strict mode (for example, if you call your function using
|
|
* `Function.call`).
|
|
*
|
|
* **Note:** This option can be used only inside of a function scope.
|
|
* JSHint will fail with an error if you will try to set this option
|
|
* globally.
|
|
*/
|
|
validthis : true,
|
|
|
|
/**
|
|
* This option suppresses warnings about the use of the `with` statement.
|
|
* The semantics of the `with` statement can cause confusion among
|
|
* developers and accidental definition of global variables.
|
|
*
|
|
* More info:
|
|
*
|
|
* * [with Statement Considered
|
|
* Harmful](http://yuiblog.com/blog/2006/04/11/with-statement-considered-harmful/)
|
|
*/
|
|
withstmt : true,
|
|
|
|
/**
|
|
* This options tells JSHint that your code uses Mozilla JavaScript
|
|
* extensions. Unless you develop specifically for the Firefox web browser
|
|
* you don't need this option.
|
|
*
|
|
* More info:
|
|
*
|
|
* * [New in JavaScript
|
|
* 1.7](https://developer.mozilla.org/en-US/docs/JavaScript/New_in_JavaScript/1.7)
|
|
*/
|
|
moz : true,
|
|
|
|
/**
|
|
* This option suppresses warnings about generator functions with no
|
|
* `yield` statement in them.
|
|
*/
|
|
noyield : true,
|
|
|
|
/**
|
|
* This option suppresses warnings about `== null` comparisons. Such
|
|
* comparisons are often useful when you want to check if a variable is
|
|
* `null` or `undefined`.
|
|
*/
|
|
eqnull : true,
|
|
|
|
/**
|
|
* This option suppresses warnings about missing semicolons, but only when
|
|
* the semicolon is omitted for the last statement in a one-line block:
|
|
*
|
|
* var name = (function() { return 'Anton' }());
|
|
*
|
|
* This is a very niche use case that is useful only when you use automatic
|
|
* JavaScript code generators.
|
|
*/
|
|
lastsemic : true,
|
|
|
|
/**
|
|
* This option suppresses warnings about functions inside of loops.
|
|
* Defining functions inside of loops can lead to bugs such as this one:
|
|
*
|
|
* var nums = [];
|
|
*
|
|
* for (var i = 0; i < 10; i++) {
|
|
* nums[i] = function (j) {
|
|
* return i + j;
|
|
* };
|
|
* }
|
|
*
|
|
* nums[0](2); // Prints 12 instead of 2
|
|
*
|
|
* To fix the code above you need to copy the value of `i`:
|
|
*
|
|
* var nums = [];
|
|
*
|
|
* for (var i = 0; i < 10; i++) {
|
|
* (function (i) {
|
|
* nums[i] = function (j) {
|
|
* return i + j;
|
|
* };
|
|
* }(i));
|
|
* }
|
|
*/
|
|
loopfunc : true,
|
|
|
|
/**
|
|
* This option suppresses warnings about the use of expressions where
|
|
* normally you would expect to see assignments or function calls. Most of
|
|
* the time, such code is a typo. However, it is not forbidden by the spec
|
|
* and that's why this warning is optional.
|
|
*/
|
|
expr : true,
|
|
|
|
/**
|
|
* This option tells JSHint that your code uses ECMAScript 6 specific
|
|
* syntax. Note that these features are not finalized yet and not all
|
|
* browsers implement them.
|
|
*
|
|
* More info:
|
|
*
|
|
* * [Draft Specification for ES.next (ECMA-262 Ed.
|
|
* 6)](http://wiki.ecmascript.org/doku.php?id=harmony:specification_drafts)
|
|
*/
|
|
esnext : true,
|
|
|
|
/**
|
|
* This option tells JSHint that your code uses ES3 array elision elements,
|
|
* or empty elements (for example, `[1, , , 4, , , 7]`).
|
|
*/
|
|
elision : true,
|
|
},
|
|
|
|
// Third party globals
|
|
environments: {
|
|
|
|
/**
|
|
* This option defines globals exposed by the
|
|
* [MooTools](http://mootools.net/) JavaScript framework.
|
|
*/
|
|
mootools : true,
|
|
|
|
/**
|
|
* This option defines globals exposed by
|
|
* [CouchDB](http://couchdb.apache.org/). CouchDB is a document-oriented
|
|
* database that can be queried and indexed in a MapReduce fashion using
|
|
* JavaScript.
|
|
*/
|
|
couch : true,
|
|
|
|
/**
|
|
* This option defines globals exposed by [the Jasmine unit testing
|
|
* framework](https://jasmine.github.io/).
|
|
*/
|
|
jasmine : true,
|
|
|
|
/**
|
|
* This option defines globals exposed by the [jQuery](http://jquery.com/)
|
|
* JavaScript library.
|
|
*/
|
|
jquery : true,
|
|
|
|
/**
|
|
* This option defines globals available when your code is running inside
|
|
* of the Node runtime environment. [Node.js](http://nodejs.org/) is a
|
|
* server-side JavaScript environment that uses an asynchronous
|
|
* event-driven model. This option also skips some warnings that make sense
|
|
* in the browser environments but don't make sense in Node such as
|
|
* file-level `use strict` pragmas and `console.log` statements.
|
|
*/
|
|
node : true,
|
|
|
|
/**
|
|
* This option defines globals exposed by [the QUnit unit testing
|
|
* framework](http://qunitjs.com/).
|
|
*/
|
|
qunit : true,
|
|
|
|
/**
|
|
* This option defines globals available when your code is running inside
|
|
* of the Rhino runtime environment. [Rhino](http://www.mozilla.org/rhino/)
|
|
* is an open-source implementation of JavaScript written entirely in Java.
|
|
*/
|
|
rhino : true,
|
|
|
|
/**
|
|
* This option defines globals exposed by [the ShellJS
|
|
* library](http://documentup.com/arturadib/shelljs).
|
|
*/
|
|
shelljs : true,
|
|
|
|
/**
|
|
* This option defines globals exposed by the
|
|
* [Prototype](http://www.prototypejs.org/) JavaScript framework.
|
|
*/
|
|
prototypejs : true,
|
|
|
|
/**
|
|
* This option defines globals exposed by the [YUI](http://yuilibrary.com/)
|
|
* JavaScript framework.
|
|
*/
|
|
yui : true,
|
|
|
|
/**
|
|
* This option defines globals exposed by the "BDD" and "TDD" UIs of the
|
|
* [Mocha unit testing framework](http://mochajs.org/).
|
|
*/
|
|
mocha : true,
|
|
|
|
/**
|
|
* This option informs JSHint that the input code describes an ECMAScript 6
|
|
* module. All module code is interpreted as strict mode code.
|
|
*/
|
|
module : true,
|
|
|
|
/**
|
|
* This option defines globals available when your code is running as a
|
|
* script for the [Windows Script
|
|
* Host](http://en.wikipedia.org/wiki/Windows_Script_Host).
|
|
*/
|
|
wsh : true,
|
|
|
|
/**
|
|
* This option defines globals available when your code is running inside
|
|
* of a Web Worker. [Web
|
|
* Workers](https://developer.mozilla.org/en/Using_web_workers) provide a
|
|
* simple means for web content to run scripts in background threads.
|
|
*/
|
|
worker : true,
|
|
|
|
/**
|
|
* This option defines non-standard but widely adopted globals such as
|
|
* `escape` and `unescape`.
|
|
*/
|
|
nonstandard : true,
|
|
|
|
/**
|
|
* This option defines globals exposed by modern browsers: all the way from
|
|
* good old `document` and `navigator` to the HTML5 `FileReader` and other
|
|
* new developments in the browser world.
|
|
*
|
|
* **Note:** This option doesn't expose variables like `alert` or
|
|
* `console`. See option `devel` for more information.
|
|
*/
|
|
browser : true,
|
|
|
|
/**
|
|
* This option defines globals available when using [the Browserify
|
|
* tool](http://browserify.org/) to build a project.
|
|
*/
|
|
browserify : true,
|
|
|
|
/**
|
|
* This option defines globals that are usually used for logging poor-man's
|
|
* debugging: `console`, `alert`, etc. It is usually a good idea to not
|
|
* ship them in production because, for example, `console.log` breaks in
|
|
* legacy versions of Internet Explorer.
|
|
*/
|
|
devel : true,
|
|
|
|
/**
|
|
* This option defines globals exposed by the [Dojo
|
|
* Toolkit](http://dojotoolkit.org/).
|
|
*/
|
|
dojo : true,
|
|
|
|
/**
|
|
* This option defines globals for typed array constructors.
|
|
*
|
|
* More info:
|
|
*
|
|
* * [JavaScript typed
|
|
* arrays](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Typed_arrays)
|
|
*/
|
|
typed : true,
|
|
|
|
/**
|
|
* This option defines globals available when your core is running inside
|
|
* of the PhantomJS runtime environment. [PhantomJS](http://phantomjs.org/)
|
|
* is a headless WebKit scriptable with a JavaScript API. It has fast and
|
|
* native support for various web standards: DOM handling, CSS selector,
|
|
* JSON, Canvas, and SVG.
|
|
*/
|
|
phantom : true
|
|
},
|
|
|
|
// Obsolete options
|
|
obsolete: {
|
|
onecase : true, // if one case switch statements should be allowed
|
|
regexp : true, // if the . should not be allowed in regexp literals
|
|
regexdash : true // if unescaped first/last dash (-) inside brackets
|
|
// should be tolerated
|
|
}
|
|
};
|
|
|
|
// These are the JSHint options that can take any value
|
|
// (we use this object to detect invalid options)
|
|
exports.val = {
|
|
|
|
/**
|
|
* This option lets you set the maximum length of a line.
|
|
*
|
|
* @deprecated JSHint is limiting its scope to issues of code correctness. If
|
|
* you would like to enforce rules relating to code style, check
|
|
* out [the JSCS project](https://github.com/jscs-dev/node-jscs).
|
|
*/
|
|
maxlen : false,
|
|
|
|
/**
|
|
* This option sets a specific tab width for your code.
|
|
*
|
|
* @deprecated JSHint is limiting its scope to issues of code correctness. If
|
|
* you would like to enforce rules relating to code style, check
|
|
* out [the JSCS project](https://github.com/jscs-dev/node-jscs).
|
|
*/
|
|
indent : false,
|
|
|
|
/**
|
|
* This options allows you to set the maximum amount of warnings JSHint will
|
|
* produce before giving up. Default is 50.
|
|
*/
|
|
maxerr : false,
|
|
|
|
predef : false, // predef is deprecated and being replaced by globals
|
|
|
|
/**
|
|
* This option can be used to specify a white list of global variables that
|
|
* are not formally defined in the source code. This is most useful when
|
|
* combined with the `undef` option in order to suppress warnings for
|
|
* project-specific global variables.
|
|
*
|
|
* Setting an entry to `true` enables reading and writing to that variable.
|
|
* Setting it to `false` will trigger JSHint to consider that variable
|
|
* read-only.
|
|
*
|
|
* See also the "environment" options: a set of options to be used as short
|
|
* hand for enabling global variables defined in common JavaScript
|
|
* environments.
|
|
*/
|
|
globals : false,
|
|
|
|
/**
|
|
* This option enforces the consistency of quotation marks used throughout
|
|
* your code. It accepts three values: `true` if you don't want to enforce
|
|
* one particular style but want some consistency, `"single"` if you want to
|
|
* allow only single quotes and `"double"` if you want to allow only double
|
|
* quotes.
|
|
*
|
|
* @deprecated JSHint is limiting its scope to issues of code correctness. If
|
|
* you would like to enforce rules relating to code style, check
|
|
* out [the JSCS project](https://github.com/jscs-dev/node-jscs).
|
|
*/
|
|
quotmark : false,
|
|
|
|
scope : false,
|
|
|
|
/**
|
|
* This option lets you set the max number of statements allowed per function:
|
|
*
|
|
* // jshint maxstatements:4
|
|
*
|
|
* function main() {
|
|
* var i = 0;
|
|
* var j = 0;
|
|
*
|
|
* // Function declarations count as one statement. Their bodies
|
|
* // don't get taken into account for the outer function.
|
|
* function inner() {
|
|
* var i2 = 1;
|
|
* var j2 = 1;
|
|
*
|
|
* return i2 + j2;
|
|
* }
|
|
*
|
|
* j = i + j;
|
|
* return j; // JSHint: Too many statements per function. (5)
|
|
* }
|
|
*/
|
|
maxstatements: false,
|
|
|
|
/**
|
|
* This option lets you control how nested do you want your blocks to be:
|
|
*
|
|
* // jshint maxdepth:2
|
|
*
|
|
* function main(meaning) {
|
|
* var day = true;
|
|
*
|
|
* if (meaning === 42) {
|
|
* while (day) {
|
|
* shuffle();
|
|
*
|
|
* if (tired) { // JSHint: Blocks are nested too deeply (3).
|
|
* sleep();
|
|
* }
|
|
* }
|
|
* }
|
|
* }
|
|
*/
|
|
maxdepth : false,
|
|
|
|
/**
|
|
* This option lets you set the max number of formal parameters allowed per
|
|
* function:
|
|
*
|
|
* // jshint maxparams:3
|
|
*
|
|
* function login(request, onSuccess) {
|
|
* // ...
|
|
* }
|
|
*
|
|
* // JSHint: Too many parameters per function (4).
|
|
* function logout(request, isManual, whereAmI, onSuccess) {
|
|
* // ...
|
|
* }
|
|
*/
|
|
maxparams : false,
|
|
|
|
/**
|
|
* This option lets you control cyclomatic complexity throughout your code.
|
|
* Cyclomatic complexity measures the number of linearly independent paths
|
|
* through a program's source code. Read more about [cyclomatic complexity on
|
|
* Wikipedia](http://en.wikipedia.org/wiki/Cyclomatic_complexity).
|
|
*/
|
|
maxcomplexity: false,
|
|
|
|
/**
|
|
* This option suppresses warnings about variable shadowing i.e. declaring a
|
|
* variable that had been already declared somewhere in the outer scope.
|
|
*
|
|
* - "inner" - check for variables defined in the same scope only
|
|
* - "outer" - check for variables defined in outer scopes as well
|
|
* - false - same as inner
|
|
* - true - allow variable shadowing
|
|
*/
|
|
shadow : false,
|
|
|
|
/**
|
|
* This option warns when you define and never use your variables. It is very
|
|
* useful for general code cleanup, especially when used in addition to
|
|
* `undef`.
|
|
*
|
|
* // jshint unused:true
|
|
*
|
|
* function test(a, b) {
|
|
* var c, d = 2;
|
|
*
|
|
* return a + d;
|
|
* }
|
|
*
|
|
* test(1, 2);
|
|
*
|
|
* // Line 3: 'b' was defined but never used.
|
|
* // Line 4: 'c' was defined but never used.
|
|
*
|
|
* In addition to that, this option will warn you about unused global
|
|
* variables declared via the `global` directive.
|
|
*
|
|
* This can be set to `vars` to only check for variables, not function
|
|
* parameters, or `strict` to check all variables and parameters. The
|
|
* default (true) behavior is to allow unused parameters that are followed by
|
|
* a used parameter.
|
|
*/
|
|
unused : true,
|
|
|
|
/**
|
|
* This option prohibits the use of a variable before it was defined.
|
|
* JavaScript has function scope only and, in addition to that, all variables
|
|
* are always moved—or hoisted— to the top of the function. This behavior can
|
|
* lead to some very nasty bugs and that's why it is safer to always use
|
|
* variable only after they have been explicitly defined.
|
|
*
|
|
* Setting this option to "nofunc" will allow function declarations to be
|
|
* ignored.
|
|
*
|
|
* For more in-depth understanding of scoping and hoisting in JavaScript,
|
|
* read [JavaScript Scoping and
|
|
* Hoisting](http://www.adequatelygood.com/2010/2/JavaScript-Scoping-and-Hoisting)
|
|
* by Ben Cherry.
|
|
*/
|
|
latedef : false,
|
|
|
|
ignore : false, // start/end ignoring lines of code, bypassing the lexer
|
|
// start - start ignoring lines, including the current line
|
|
// end - stop ignoring lines, starting on the next line
|
|
// line - ignore warnings / errors for just a single line
|
|
// (this option does not bypass the lexer)
|
|
ignoreDelimiters: false // array of start/end delimiters used to ignore
|
|
// certain chunks from code
|
|
};
|
|
|
|
// These are JSHint boolean options which are shared with JSLint
|
|
// where the definition in JSHint is opposite JSLint
|
|
exports.inverted = {
|
|
bitwise : true,
|
|
forin : true,
|
|
newcap : true,
|
|
plusplus: true,
|
|
regexp : true,
|
|
undef : true,
|
|
|
|
// Inverted and renamed, use JSHint name here
|
|
eqeqeq : true,
|
|
strict : true
|
|
};
|
|
|
|
exports.validNames = Object.keys(exports.val)
|
|
.concat(Object.keys(exports.bool.relaxing))
|
|
.concat(Object.keys(exports.bool.enforcing))
|
|
.concat(Object.keys(exports.bool.obsolete))
|
|
.concat(Object.keys(exports.bool.environments));
|
|
|
|
// These are JSHint boolean options which are shared with JSLint
|
|
// where the name has been changed but the effect is unchanged
|
|
exports.renamed = {
|
|
eqeq : "eqeqeq",
|
|
windows: "wsh",
|
|
sloppy : "strict"
|
|
};
|
|
|
|
exports.removed = {
|
|
nomen: true,
|
|
onevar: true,
|
|
passfail: true,
|
|
white: true,
|
|
gcl: true,
|
|
smarttabs: true,
|
|
trailing: true
|
|
};
|
|
|
|
// Add options here which should not be automatically enforced by
|
|
// `enforceall`.
|
|
exports.noenforceall = {
|
|
varstmt: true,
|
|
strict: true
|
|
};
|
|
|
|
},{}],17:[function(require,module,exports){
|
|
/*
|
|
* Regular expressions. Some of these are stupidly long.
|
|
*/
|
|
|
|
/*jshint maxlen:1000 */
|
|
|
|
"use strict";
|
|
|
|
// Unsafe comment or string (ax)
|
|
exports.unsafeString =
|
|
/@cc|<\/?|script|\]\s*\]|<\s*!|</i;
|
|
|
|
// Unsafe characters that are silently deleted by one or more browsers (cx)
|
|
exports.unsafeChars =
|
|
/[\u0000-\u001f\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/;
|
|
|
|
// Characters in strings that need escaping (nx and nxg)
|
|
exports.needEsc =
|
|
/[\u0000-\u001f&<"\/\\\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/;
|
|
|
|
exports.needEscGlobal =
|
|
/[\u0000-\u001f&<"\/\\\u007f-\u009f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g;
|
|
|
|
// Star slash (lx)
|
|
exports.starSlash = /\*\//;
|
|
|
|
// Identifier (ix)
|
|
exports.identifier = /^([a-zA-Z_$][a-zA-Z0-9_$]*)$/;
|
|
|
|
// JavaScript URL (jx)
|
|
exports.javascriptURL = /^(?:javascript|jscript|ecmascript|vbscript|livescript)\s*:/i;
|
|
|
|
// Catches /* falls through */ comments (ft)
|
|
exports.fallsThrough = /^\s*\/\*\s*falls?\sthrough\s*\*\/\s*$/;
|
|
|
|
// very conservative rule (eg: only one space between the start of the comment and the first character)
|
|
// to relax the maxlen option
|
|
exports.maxlenException = /^(?:(?:\/\/|\/\*|\*) ?)?[^ ]+$/;
|
|
|
|
},{}],18:[function(require,module,exports){
|
|
"use strict";
|
|
var NameStack = require("./name-stack.js");
|
|
|
|
var state = {
|
|
syntax: {},
|
|
|
|
/**
|
|
* Determine if the code currently being linted is strict mode code.
|
|
*
|
|
* @returns {boolean}
|
|
*/
|
|
isStrict: function() {
|
|
return this.directive["use strict"] || this.inClassBody ||
|
|
this.option.module;
|
|
},
|
|
|
|
// Assumption: chronologically ES3 < ES5 < ES6/ESNext < Moz
|
|
inMoz: function() {
|
|
return this.option.moz && !this.option.esnext;
|
|
},
|
|
|
|
/**
|
|
* @param {object} options
|
|
* @param {boolean} options.strict - When `true`, only consider ESNext when
|
|
* in "esnext" code and *not* in "moz".
|
|
*/
|
|
inESNext: function(strict) {
|
|
if (strict) {
|
|
return !this.option.moz && this.option.esnext;
|
|
}
|
|
return this.option.moz || this.option.esnext;
|
|
},
|
|
|
|
inES5: function() {
|
|
return !this.option.es3;
|
|
},
|
|
|
|
inES3: function() {
|
|
return this.option.es3;
|
|
},
|
|
|
|
|
|
reset: function() {
|
|
this.tokens = {
|
|
prev: null,
|
|
next: null,
|
|
curr: null
|
|
};
|
|
|
|
this.option = {};
|
|
this.ignored = {};
|
|
this.directive = {};
|
|
this.jsonMode = false;
|
|
this.jsonWarnings = [];
|
|
this.lines = [];
|
|
this.tab = "";
|
|
this.cache = {}; // Node.JS doesn't have Map. Sniff.
|
|
this.ignoredLines = {};
|
|
this.forinifcheckneeded = false;
|
|
this.nameStack = new NameStack();
|
|
this.inClassBody = false;
|
|
|
|
// Blank out non-multi-line-commented lines when ignoring linter errors
|
|
this.ignoreLinterErrors = false;
|
|
}
|
|
};
|
|
|
|
exports.state = state;
|
|
|
|
},{"./name-stack.js":15}],19:[function(require,module,exports){
|
|
"use strict";
|
|
|
|
exports.register = function(linter) {
|
|
// Check for properties named __proto__. This special property was
|
|
// deprecated and then re-introduced for ES6.
|
|
|
|
linter.on("Identifier", function style_scanProto(data) {
|
|
if (linter.getOption("proto")) {
|
|
return;
|
|
}
|
|
|
|
if (data.name === "__proto__") {
|
|
linter.warn("W103", {
|
|
line: data.line,
|
|
char: data.char,
|
|
data: [ data.name ]
|
|
});
|
|
}
|
|
});
|
|
|
|
// Check for properties named __iterator__. This is a special property
|
|
// available only in browsers with JavaScript 1.7 implementation.
|
|
|
|
linter.on("Identifier", function style_scanIterator(data) {
|
|
if (linter.getOption("iterator")) {
|
|
return;
|
|
}
|
|
|
|
if (data.name === "__iterator__") {
|
|
linter.warn("W104", {
|
|
line: data.line,
|
|
char: data.char,
|
|
data: [ data.name ]
|
|
});
|
|
}
|
|
});
|
|
|
|
// Check that all identifiers are using camelCase notation.
|
|
// Exceptions: names like MY_VAR and _myVar.
|
|
|
|
linter.on("Identifier", function style_scanCamelCase(data) {
|
|
if (!linter.getOption("camelcase")) {
|
|
return;
|
|
}
|
|
|
|
if (data.name.replace(/^_+|_+$/g, "").indexOf("_") > -1 && !data.name.match(/^[A-Z0-9_]*$/)) {
|
|
linter.warn("W106", {
|
|
line: data.line,
|
|
char: data.from,
|
|
data: [ data.name ]
|
|
});
|
|
}
|
|
});
|
|
|
|
// Enforce consistency in style of quoting.
|
|
|
|
linter.on("String", function style_scanQuotes(data) {
|
|
var quotmark = linter.getOption("quotmark");
|
|
var code;
|
|
|
|
if (!quotmark) {
|
|
return;
|
|
}
|
|
|
|
// If quotmark is set to 'single' warn about all double-quotes.
|
|
|
|
if (quotmark === "single" && data.quote !== "'") {
|
|
code = "W109";
|
|
}
|
|
|
|
// If quotmark is set to 'double' warn about all single-quotes.
|
|
|
|
if (quotmark === "double" && data.quote !== "\"") {
|
|
code = "W108";
|
|
}
|
|
|
|
// If quotmark is set to true, remember the first quotation style
|
|
// and then warn about all others.
|
|
|
|
if (quotmark === true) {
|
|
if (!linter.getCache("quotmark")) {
|
|
linter.setCache("quotmark", data.quote);
|
|
}
|
|
|
|
if (linter.getCache("quotmark") !== data.quote) {
|
|
code = "W110";
|
|
}
|
|
}
|
|
|
|
if (code) {
|
|
linter.warn(code, {
|
|
line: data.line,
|
|
char: data.char,
|
|
});
|
|
}
|
|
});
|
|
|
|
linter.on("Number", function style_scanNumbers(data) {
|
|
if (data.value.charAt(0) === ".") {
|
|
// Warn about a leading decimal point.
|
|
linter.warn("W008", {
|
|
line: data.line,
|
|
char: data.char,
|
|
data: [ data.value ]
|
|
});
|
|
}
|
|
|
|
if (data.value.substr(data.value.length - 1) === ".") {
|
|
// Warn about a trailing decimal point.
|
|
linter.warn("W047", {
|
|
line: data.line,
|
|
char: data.char,
|
|
data: [ data.value ]
|
|
});
|
|
}
|
|
|
|
if (/^00+/.test(data.value)) {
|
|
// Multiple leading zeroes.
|
|
linter.warn("W046", {
|
|
line: data.line,
|
|
char: data.char,
|
|
data: [ data.value ]
|
|
});
|
|
}
|
|
});
|
|
|
|
// Warn about script URLs.
|
|
|
|
linter.on("String", function style_scanJavaScriptURLs(data) {
|
|
var re = /^(?:javascript|jscript|ecmascript|vbscript|livescript)\s*:/i;
|
|
|
|
if (linter.getOption("scripturl")) {
|
|
return;
|
|
}
|
|
|
|
if (re.test(data.value)) {
|
|
linter.warn("W107", {
|
|
line: data.line,
|
|
char: data.char
|
|
});
|
|
}
|
|
});
|
|
};
|
|
|
|
},{}],20:[function(require,module,exports){
|
|
// jshint -W001
|
|
|
|
"use strict";
|
|
|
|
// Identifiers provided by the ECMAScript standard.
|
|
|
|
exports.reservedVars = {
|
|
arguments : false,
|
|
NaN : false
|
|
};
|
|
|
|
exports.ecmaIdentifiers = {
|
|
3: {
|
|
Array : false,
|
|
Boolean : false,
|
|
Date : false,
|
|
decodeURI : false,
|
|
decodeURIComponent : false,
|
|
encodeURI : false,
|
|
encodeURIComponent : false,
|
|
Error : false,
|
|
"eval" : false,
|
|
EvalError : false,
|
|
Function : false,
|
|
hasOwnProperty : false,
|
|
isFinite : false,
|
|
isNaN : false,
|
|
Math : false,
|
|
Number : false,
|
|
Object : false,
|
|
parseInt : false,
|
|
parseFloat : false,
|
|
RangeError : false,
|
|
ReferenceError : false,
|
|
RegExp : false,
|
|
String : false,
|
|
SyntaxError : false,
|
|
TypeError : false,
|
|
URIError : false
|
|
},
|
|
5: {
|
|
JSON : false
|
|
},
|
|
6: {
|
|
Map : false,
|
|
Promise : false,
|
|
Proxy : false,
|
|
Reflect : false,
|
|
Set : false,
|
|
Symbol : false,
|
|
WeakMap : false,
|
|
WeakSet : false
|
|
}
|
|
};
|
|
|
|
// Global variables commonly provided by a web browser environment.
|
|
|
|
exports.browser = {
|
|
Audio : false,
|
|
Blob : false,
|
|
addEventListener : false,
|
|
applicationCache : false,
|
|
atob : false,
|
|
blur : false,
|
|
btoa : false,
|
|
cancelAnimationFrame : false,
|
|
CanvasGradient : false,
|
|
CanvasPattern : false,
|
|
CanvasRenderingContext2D: false,
|
|
CSS : false,
|
|
clearInterval : false,
|
|
clearTimeout : false,
|
|
close : false,
|
|
closed : false,
|
|
Comment : false,
|
|
CustomEvent : false,
|
|
DOMParser : false,
|
|
defaultStatus : false,
|
|
Document : false,
|
|
document : false,
|
|
DocumentFragment : false,
|
|
Element : false,
|
|
ElementTimeControl : false,
|
|
Event : false,
|
|
event : false,
|
|
fetch : false,
|
|
FileReader : false,
|
|
FormData : false,
|
|
focus : false,
|
|
frames : false,
|
|
getComputedStyle : false,
|
|
HTMLElement : false,
|
|
HTMLAnchorElement : false,
|
|
HTMLBaseElement : false,
|
|
HTMLBlockquoteElement: false,
|
|
HTMLBodyElement : false,
|
|
HTMLBRElement : false,
|
|
HTMLButtonElement : false,
|
|
HTMLCanvasElement : false,
|
|
HTMLDirectoryElement : false,
|
|
HTMLDivElement : false,
|
|
HTMLDListElement : false,
|
|
HTMLFieldSetElement : false,
|
|
HTMLFontElement : false,
|
|
HTMLFormElement : false,
|
|
HTMLFrameElement : false,
|
|
HTMLFrameSetElement : false,
|
|
HTMLHeadElement : false,
|
|
HTMLHeadingElement : false,
|
|
HTMLHRElement : false,
|
|
HTMLHtmlElement : false,
|
|
HTMLIFrameElement : false,
|
|
HTMLImageElement : false,
|
|
HTMLInputElement : false,
|
|
HTMLIsIndexElement : false,
|
|
HTMLLabelElement : false,
|
|
HTMLLayerElement : false,
|
|
HTMLLegendElement : false,
|
|
HTMLLIElement : false,
|
|
HTMLLinkElement : false,
|
|
HTMLMapElement : false,
|
|
HTMLMenuElement : false,
|
|
HTMLMetaElement : false,
|
|
HTMLModElement : false,
|
|
HTMLObjectElement : false,
|
|
HTMLOListElement : false,
|
|
HTMLOptGroupElement : false,
|
|
HTMLOptionElement : false,
|
|
HTMLParagraphElement : false,
|
|
HTMLParamElement : false,
|
|
HTMLPreElement : false,
|
|
HTMLQuoteElement : false,
|
|
HTMLScriptElement : false,
|
|
HTMLSelectElement : false,
|
|
HTMLStyleElement : false,
|
|
HTMLTableCaptionElement: false,
|
|
HTMLTableCellElement : false,
|
|
HTMLTableColElement : false,
|
|
HTMLTableElement : false,
|
|
HTMLTableRowElement : false,
|
|
HTMLTableSectionElement: false,
|
|
HTMLTemplateElement : false,
|
|
HTMLTextAreaElement : false,
|
|
HTMLTitleElement : false,
|
|
HTMLUListElement : false,
|
|
HTMLVideoElement : false,
|
|
history : false,
|
|
Image : false,
|
|
Intl : false,
|
|
length : false,
|
|
localStorage : false,
|
|
location : false,
|
|
matchMedia : false,
|
|
MessageChannel : false,
|
|
MessageEvent : false,
|
|
MessagePort : false,
|
|
MouseEvent : false,
|
|
moveBy : false,
|
|
moveTo : false,
|
|
MutationObserver : false,
|
|
name : false,
|
|
Node : false,
|
|
NodeFilter : false,
|
|
NodeList : false,
|
|
Notification : false,
|
|
navigator : false,
|
|
onbeforeunload : true,
|
|
onblur : true,
|
|
onerror : true,
|
|
onfocus : true,
|
|
onload : true,
|
|
onresize : true,
|
|
onunload : true,
|
|
open : false,
|
|
openDatabase : false,
|
|
opener : false,
|
|
Option : false,
|
|
parent : false,
|
|
print : false,
|
|
Range : false,
|
|
requestAnimationFrame : false,
|
|
removeEventListener : false,
|
|
resizeBy : false,
|
|
resizeTo : false,
|
|
screen : false,
|
|
scroll : false,
|
|
scrollBy : false,
|
|
scrollTo : false,
|
|
sessionStorage : false,
|
|
setInterval : false,
|
|
setTimeout : false,
|
|
SharedWorker : false,
|
|
status : false,
|
|
SVGAElement : false,
|
|
SVGAltGlyphDefElement: false,
|
|
SVGAltGlyphElement : false,
|
|
SVGAltGlyphItemElement: false,
|
|
SVGAngle : false,
|
|
SVGAnimateColorElement: false,
|
|
SVGAnimateElement : false,
|
|
SVGAnimateMotionElement: false,
|
|
SVGAnimateTransformElement: false,
|
|
SVGAnimatedAngle : false,
|
|
SVGAnimatedBoolean : false,
|
|
SVGAnimatedEnumeration: false,
|
|
SVGAnimatedInteger : false,
|
|
SVGAnimatedLength : false,
|
|
SVGAnimatedLengthList: false,
|
|
SVGAnimatedNumber : false,
|
|
SVGAnimatedNumberList: false,
|
|
SVGAnimatedPathData : false,
|
|
SVGAnimatedPoints : false,
|
|
SVGAnimatedPreserveAspectRatio: false,
|
|
SVGAnimatedRect : false,
|
|
SVGAnimatedString : false,
|
|
SVGAnimatedTransformList: false,
|
|
SVGAnimationElement : false,
|
|
SVGCSSRule : false,
|
|
SVGCircleElement : false,
|
|
SVGClipPathElement : false,
|
|
SVGColor : false,
|
|
SVGColorProfileElement: false,
|
|
SVGColorProfileRule : false,
|
|
SVGComponentTransferFunctionElement: false,
|
|
SVGCursorElement : false,
|
|
SVGDefsElement : false,
|
|
SVGDescElement : false,
|
|
SVGDocument : false,
|
|
SVGElement : false,
|
|
SVGElementInstance : false,
|
|
SVGElementInstanceList: false,
|
|
SVGEllipseElement : false,
|
|
SVGExternalResourcesRequired: false,
|
|
SVGFEBlendElement : false,
|
|
SVGFEColorMatrixElement: false,
|
|
SVGFEComponentTransferElement: false,
|
|
SVGFECompositeElement: false,
|
|
SVGFEConvolveMatrixElement: false,
|
|
SVGFEDiffuseLightingElement: false,
|
|
SVGFEDisplacementMapElement: false,
|
|
SVGFEDistantLightElement: false,
|
|
SVGFEFloodElement : false,
|
|
SVGFEFuncAElement : false,
|
|
SVGFEFuncBElement : false,
|
|
SVGFEFuncGElement : false,
|
|
SVGFEFuncRElement : false,
|
|
SVGFEGaussianBlurElement: false,
|
|
SVGFEImageElement : false,
|
|
SVGFEMergeElement : false,
|
|
SVGFEMergeNodeElement: false,
|
|
SVGFEMorphologyElement: false,
|
|
SVGFEOffsetElement : false,
|
|
SVGFEPointLightElement: false,
|
|
SVGFESpecularLightingElement: false,
|
|
SVGFESpotLightElement: false,
|
|
SVGFETileElement : false,
|
|
SVGFETurbulenceElement: false,
|
|
SVGFilterElement : false,
|
|
SVGFilterPrimitiveStandardAttributes: false,
|
|
SVGFitToViewBox : false,
|
|
SVGFontElement : false,
|
|
SVGFontFaceElement : false,
|
|
SVGFontFaceFormatElement: false,
|
|
SVGFontFaceNameElement: false,
|
|
SVGFontFaceSrcElement: false,
|
|
SVGFontFaceUriElement: false,
|
|
SVGForeignObjectElement: false,
|
|
SVGGElement : false,
|
|
SVGGlyphElement : false,
|
|
SVGGlyphRefElement : false,
|
|
SVGGradientElement : false,
|
|
SVGHKernElement : false,
|
|
SVGICCColor : false,
|
|
SVGImageElement : false,
|
|
SVGLangSpace : false,
|
|
SVGLength : false,
|
|
SVGLengthList : false,
|
|
SVGLineElement : false,
|
|
SVGLinearGradientElement: false,
|
|
SVGLocatable : false,
|
|
SVGMPathElement : false,
|
|
SVGMarkerElement : false,
|
|
SVGMaskElement : false,
|
|
SVGMatrix : false,
|
|
SVGMetadataElement : false,
|
|
SVGMissingGlyphElement: false,
|
|
SVGNumber : false,
|
|
SVGNumberList : false,
|
|
SVGPaint : false,
|
|
SVGPathElement : false,
|
|
SVGPathSeg : false,
|
|
SVGPathSegArcAbs : false,
|
|
SVGPathSegArcRel : false,
|
|
SVGPathSegClosePath : false,
|
|
SVGPathSegCurvetoCubicAbs: false,
|
|
SVGPathSegCurvetoCubicRel: false,
|
|
SVGPathSegCurvetoCubicSmoothAbs: false,
|
|
SVGPathSegCurvetoCubicSmoothRel: false,
|
|
SVGPathSegCurvetoQuadraticAbs: false,
|
|
SVGPathSegCurvetoQuadraticRel: false,
|
|
SVGPathSegCurvetoQuadraticSmoothAbs: false,
|
|
SVGPathSegCurvetoQuadraticSmoothRel: false,
|
|
SVGPathSegLinetoAbs : false,
|
|
SVGPathSegLinetoHorizontalAbs: false,
|
|
SVGPathSegLinetoHorizontalRel: false,
|
|
SVGPathSegLinetoRel : false,
|
|
SVGPathSegLinetoVerticalAbs: false,
|
|
SVGPathSegLinetoVerticalRel: false,
|
|
SVGPathSegList : false,
|
|
SVGPathSegMovetoAbs : false,
|
|
SVGPathSegMovetoRel : false,
|
|
SVGPatternElement : false,
|
|
SVGPoint : false,
|
|
SVGPointList : false,
|
|
SVGPolygonElement : false,
|
|
SVGPolylineElement : false,
|
|
SVGPreserveAspectRatio: false,
|
|
SVGRadialGradientElement: false,
|
|
SVGRect : false,
|
|
SVGRectElement : false,
|
|
SVGRenderingIntent : false,
|
|
SVGSVGElement : false,
|
|
SVGScriptElement : false,
|
|
SVGSetElement : false,
|
|
SVGStopElement : false,
|
|
SVGStringList : false,
|
|
SVGStylable : false,
|
|
SVGStyleElement : false,
|
|
SVGSwitchElement : false,
|
|
SVGSymbolElement : false,
|
|
SVGTRefElement : false,
|
|
SVGTSpanElement : false,
|
|
SVGTests : false,
|
|
SVGTextContentElement: false,
|
|
SVGTextElement : false,
|
|
SVGTextPathElement : false,
|
|
SVGTextPositioningElement: false,
|
|
SVGTitleElement : false,
|
|
SVGTransform : false,
|
|
SVGTransformList : false,
|
|
SVGTransformable : false,
|
|
SVGURIReference : false,
|
|
SVGUnitTypes : false,
|
|
SVGUseElement : false,
|
|
SVGVKernElement : false,
|
|
SVGViewElement : false,
|
|
SVGViewSpec : false,
|
|
SVGZoomAndPan : false,
|
|
Text : false,
|
|
TextDecoder : false,
|
|
TextEncoder : false,
|
|
TimeEvent : false,
|
|
top : false,
|
|
URL : false,
|
|
WebGLActiveInfo : false,
|
|
WebGLBuffer : false,
|
|
WebGLContextEvent : false,
|
|
WebGLFramebuffer : false,
|
|
WebGLProgram : false,
|
|
WebGLRenderbuffer : false,
|
|
WebGLRenderingContext: false,
|
|
WebGLShader : false,
|
|
WebGLShaderPrecisionFormat: false,
|
|
WebGLTexture : false,
|
|
WebGLUniformLocation : false,
|
|
WebSocket : false,
|
|
window : false,
|
|
Worker : false,
|
|
XDomainRequest : false,
|
|
XMLHttpRequest : false,
|
|
XMLSerializer : false,
|
|
XPathEvaluator : false,
|
|
XPathException : false,
|
|
XPathExpression : false,
|
|
XPathNamespace : false,
|
|
XPathNSResolver : false,
|
|
XPathResult : false
|
|
};
|
|
|
|
exports.devel = {
|
|
alert : false,
|
|
confirm: false,
|
|
console: false,
|
|
Debug : false,
|
|
opera : false,
|
|
prompt : false
|
|
};
|
|
|
|
exports.worker = {
|
|
importScripts : true,
|
|
postMessage : true,
|
|
self : true,
|
|
FileReaderSync : true
|
|
};
|
|
|
|
// Widely adopted global names that are not part of ECMAScript standard
|
|
exports.nonstandard = {
|
|
escape : false,
|
|
unescape: false
|
|
};
|
|
|
|
// Globals provided by popular JavaScript environments.
|
|
|
|
exports.couch = {
|
|
"require" : false,
|
|
respond : false,
|
|
getRow : false,
|
|
emit : false,
|
|
send : false,
|
|
start : false,
|
|
sum : false,
|
|
log : false,
|
|
exports : false,
|
|
module : false,
|
|
provides : false
|
|
};
|
|
|
|
exports.node = {
|
|
__filename : false,
|
|
__dirname : false,
|
|
GLOBAL : false,
|
|
global : false,
|
|
module : false,
|
|
require : false,
|
|
|
|
// These globals are writeable because Node allows the following
|
|
// usage pattern: var Buffer = require("buffer").Buffer;
|
|
|
|
Buffer : true,
|
|
console : true,
|
|
exports : true,
|
|
process : true,
|
|
setTimeout : true,
|
|
clearTimeout : true,
|
|
setInterval : true,
|
|
clearInterval : true,
|
|
setImmediate : true, // v0.9.1+
|
|
clearImmediate: true // v0.9.1+
|
|
};
|
|
|
|
exports.browserify = {
|
|
__filename : false,
|
|
__dirname : false,
|
|
global : false,
|
|
module : false,
|
|
require : false,
|
|
Buffer : true,
|
|
exports : true,
|
|
process : true
|
|
};
|
|
|
|
exports.phantom = {
|
|
phantom : true,
|
|
require : true,
|
|
WebPage : true,
|
|
console : true, // in examples, but undocumented
|
|
exports : true // v1.7+
|
|
};
|
|
|
|
exports.qunit = {
|
|
asyncTest : false,
|
|
deepEqual : false,
|
|
equal : false,
|
|
expect : false,
|
|
module : false,
|
|
notDeepEqual : false,
|
|
notEqual : false,
|
|
notPropEqual : false,
|
|
notStrictEqual : false,
|
|
ok : false,
|
|
propEqual : false,
|
|
QUnit : false,
|
|
raises : false,
|
|
start : false,
|
|
stop : false,
|
|
strictEqual : false,
|
|
test : false,
|
|
"throws" : false
|
|
};
|
|
|
|
exports.rhino = {
|
|
defineClass : false,
|
|
deserialize : false,
|
|
gc : false,
|
|
help : false,
|
|
importClass : false,
|
|
importPackage: false,
|
|
"java" : false,
|
|
load : false,
|
|
loadClass : false,
|
|
Packages : false,
|
|
print : false,
|
|
quit : false,
|
|
readFile : false,
|
|
readUrl : false,
|
|
runCommand : false,
|
|
seal : false,
|
|
serialize : false,
|
|
spawn : false,
|
|
sync : false,
|
|
toint32 : false,
|
|
version : false
|
|
};
|
|
|
|
exports.shelljs = {
|
|
target : false,
|
|
echo : false,
|
|
exit : false,
|
|
cd : false,
|
|
pwd : false,
|
|
ls : false,
|
|
find : false,
|
|
cp : false,
|
|
rm : false,
|
|
mv : false,
|
|
mkdir : false,
|
|
test : false,
|
|
cat : false,
|
|
sed : false,
|
|
grep : false,
|
|
which : false,
|
|
dirs : false,
|
|
pushd : false,
|
|
popd : false,
|
|
env : false,
|
|
exec : false,
|
|
chmod : false,
|
|
config : false,
|
|
error : false,
|
|
tempdir : false
|
|
};
|
|
|
|
exports.typed = {
|
|
ArrayBuffer : false,
|
|
ArrayBufferView : false,
|
|
DataView : false,
|
|
Float32Array : false,
|
|
Float64Array : false,
|
|
Int16Array : false,
|
|
Int32Array : false,
|
|
Int8Array : false,
|
|
Uint16Array : false,
|
|
Uint32Array : false,
|
|
Uint8Array : false,
|
|
Uint8ClampedArray : false
|
|
};
|
|
|
|
exports.wsh = {
|
|
ActiveXObject : true,
|
|
Enumerator : true,
|
|
GetObject : true,
|
|
ScriptEngine : true,
|
|
ScriptEngineBuildVersion : true,
|
|
ScriptEngineMajorVersion : true,
|
|
ScriptEngineMinorVersion : true,
|
|
VBArray : true,
|
|
WSH : true,
|
|
WScript : true,
|
|
XDomainRequest : true
|
|
};
|
|
|
|
// Globals provided by popular JavaScript libraries.
|
|
|
|
exports.dojo = {
|
|
dojo : false,
|
|
dijit : false,
|
|
dojox : false,
|
|
define : false,
|
|
"require": false
|
|
};
|
|
|
|
exports.jquery = {
|
|
"$" : false,
|
|
jQuery : false
|
|
};
|
|
|
|
exports.mootools = {
|
|
"$" : false,
|
|
"$$" : false,
|
|
Asset : false,
|
|
Browser : false,
|
|
Chain : false,
|
|
Class : false,
|
|
Color : false,
|
|
Cookie : false,
|
|
Core : false,
|
|
Document : false,
|
|
DomReady : false,
|
|
DOMEvent : false,
|
|
DOMReady : false,
|
|
Drag : false,
|
|
Element : false,
|
|
Elements : false,
|
|
Event : false,
|
|
Events : false,
|
|
Fx : false,
|
|
Group : false,
|
|
Hash : false,
|
|
HtmlTable : false,
|
|
IFrame : false,
|
|
IframeShim : false,
|
|
InputValidator: false,
|
|
instanceOf : false,
|
|
Keyboard : false,
|
|
Locale : false,
|
|
Mask : false,
|
|
MooTools : false,
|
|
Native : false,
|
|
Options : false,
|
|
OverText : false,
|
|
Request : false,
|
|
Scroller : false,
|
|
Slick : false,
|
|
Slider : false,
|
|
Sortables : false,
|
|
Spinner : false,
|
|
Swiff : false,
|
|
Tips : false,
|
|
Type : false,
|
|
typeOf : false,
|
|
URI : false,
|
|
Window : false
|
|
};
|
|
|
|
exports.prototypejs = {
|
|
"$" : false,
|
|
"$$" : false,
|
|
"$A" : false,
|
|
"$F" : false,
|
|
"$H" : false,
|
|
"$R" : false,
|
|
"$break" : false,
|
|
"$continue" : false,
|
|
"$w" : false,
|
|
Abstract : false,
|
|
Ajax : false,
|
|
Class : false,
|
|
Enumerable : false,
|
|
Element : false,
|
|
Event : false,
|
|
Field : false,
|
|
Form : false,
|
|
Hash : false,
|
|
Insertion : false,
|
|
ObjectRange : false,
|
|
PeriodicalExecuter: false,
|
|
Position : false,
|
|
Prototype : false,
|
|
Selector : false,
|
|
Template : false,
|
|
Toggle : false,
|
|
Try : false,
|
|
Autocompleter : false,
|
|
Builder : false,
|
|
Control : false,
|
|
Draggable : false,
|
|
Draggables : false,
|
|
Droppables : false,
|
|
Effect : false,
|
|
Sortable : false,
|
|
SortableObserver : false,
|
|
Sound : false,
|
|
Scriptaculous : false
|
|
};
|
|
|
|
exports.yui = {
|
|
YUI : false,
|
|
Y : false,
|
|
YUI_config: false
|
|
};
|
|
|
|
exports.mocha = {
|
|
// BDD
|
|
describe : false,
|
|
xdescribe : false,
|
|
it : false,
|
|
xit : false,
|
|
context : false,
|
|
xcontext : false,
|
|
before : false,
|
|
after : false,
|
|
beforeEach : false,
|
|
afterEach : false,
|
|
// TDD
|
|
suite : false,
|
|
test : false,
|
|
setup : false,
|
|
teardown : false,
|
|
suiteSetup : false,
|
|
suiteTeardown : false
|
|
};
|
|
|
|
exports.jasmine = {
|
|
jasmine : false,
|
|
describe : false,
|
|
xdescribe : false,
|
|
it : false,
|
|
xit : false,
|
|
beforeEach : false,
|
|
afterEach : false,
|
|
setFixtures : false,
|
|
loadFixtures: false,
|
|
spyOn : false,
|
|
expect : false,
|
|
// Jasmine 1.3
|
|
runs : false,
|
|
waitsFor : false,
|
|
waits : false,
|
|
// Jasmine 2.1
|
|
beforeAll : false,
|
|
afterAll : false,
|
|
fail : false,
|
|
fdescribe : false,
|
|
fit : false
|
|
};
|
|
|
|
},{}],"jshint":[function(require,module,exports){
|
|
/*!
|
|
* JSHint, by JSHint Community.
|
|
*
|
|
* This file (and this file only) is licensed under the same slightly modified
|
|
* MIT license that JSLint is. It stops evil-doers everywhere:
|
|
*
|
|
* Copyright (c) 2002 Douglas Crockford (www.JSLint.com)
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the "Software"),
|
|
* to deal in the Software without restriction, including without limitation
|
|
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
|
* and/or sell copies of the Software, and to permit persons to whom
|
|
* the Software is furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included
|
|
* in all copies or substantial portions of the Software.
|
|
*
|
|
* The Software shall be used for Good, not Evil.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
|
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
|
|
* DEALINGS IN THE SOFTWARE.
|
|
*
|
|
*/
|
|
|
|
/*jshint quotmark:double */
|
|
/*global console:true */
|
|
/*exported console */
|
|
|
|
var _ = require("lodash");
|
|
var events = require("events");
|
|
var vars = require("./vars.js");
|
|
var messages = require("./messages.js");
|
|
var Lexer = require("./lex.js").Lexer;
|
|
var reg = require("./reg.js");
|
|
var state = require("./state.js").state;
|
|
var style = require("./style.js");
|
|
var options = require("./options.js");
|
|
|
|
// We need this module here because environments such as IE and Rhino
|
|
// don't necessarilly expose the 'console' API and browserify uses
|
|
// it to log things. It's a sad state of affair, really.
|
|
var console = require("console-browserify");
|
|
|
|
// We build the application inside a function so that we produce only a singleton
|
|
// variable. That function will be invoked immediately, and its return value is
|
|
// the JSHINT function itself.
|
|
|
|
var JSHINT = (function() {
|
|
"use strict";
|
|
|
|
var api, // Extension API
|
|
|
|
// These are operators that should not be used with the ! operator.
|
|
bang = {
|
|
"<" : true,
|
|
"<=" : true,
|
|
"==" : true,
|
|
"===": true,
|
|
"!==": true,
|
|
"!=" : true,
|
|
">" : true,
|
|
">=" : true,
|
|
"+" : true,
|
|
"-" : true,
|
|
"*" : true,
|
|
"/" : true,
|
|
"%" : true
|
|
},
|
|
|
|
declared, // Globals that were declared using /*global ... */ syntax.
|
|
exported, // Variables that are used outside of the current file.
|
|
|
|
functionicity = [
|
|
"closure", "exception", "global", "label",
|
|
"outer", "unused", "var"
|
|
],
|
|
|
|
funct, // The current function
|
|
functions, // All of the functions
|
|
|
|
global, // The global scope
|
|
implied, // Implied globals
|
|
inblock,
|
|
indent,
|
|
lookahead,
|
|
lex,
|
|
member,
|
|
membersOnly,
|
|
predefined, // Global variables defined by option
|
|
|
|
scope, // The current scope
|
|
stack,
|
|
unuseds,
|
|
urls,
|
|
|
|
extraModules = [],
|
|
emitter = new events.EventEmitter();
|
|
|
|
function checkOption(name, t) {
|
|
name = name.trim();
|
|
|
|
if (/^[+-]W\d{3}$/g.test(name)) {
|
|
return true;
|
|
}
|
|
|
|
if (options.validNames.indexOf(name) === -1) {
|
|
if (t.type !== "jslint" && !_.has(options.removed, name)) {
|
|
error("E001", t, name);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
function isString(obj) {
|
|
return Object.prototype.toString.call(obj) === "[object String]";
|
|
}
|
|
|
|
function isIdentifier(tkn, value) {
|
|
if (!tkn)
|
|
return false;
|
|
|
|
if (!tkn.identifier || tkn.value !== value)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
function isReserved(token) {
|
|
if (!token.reserved) {
|
|
return false;
|
|
}
|
|
var meta = token.meta;
|
|
|
|
if (meta && meta.isFutureReservedWord && state.inES5()) {
|
|
// ES3 FutureReservedWord in an ES5 environment.
|
|
if (!meta.es5) {
|
|
return false;
|
|
}
|
|
|
|
// Some ES5 FutureReservedWord identifiers are active only
|
|
// within a strict mode environment.
|
|
if (meta.strictOnly) {
|
|
if (!state.option.strict && !state.isStrict()) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (token.isProperty) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
function supplant(str, data) {
|
|
return str.replace(/\{([^{}]*)\}/g, function(a, b) {
|
|
var r = data[b];
|
|
return typeof r === "string" || typeof r === "number" ? r : a;
|
|
});
|
|
}
|
|
|
|
function combine(dest, src) {
|
|
Object.keys(src).forEach(function(name) {
|
|
if (_.has(JSHINT.blacklist, name)) return;
|
|
dest[name] = src[name];
|
|
});
|
|
}
|
|
|
|
function processenforceall() {
|
|
if (state.option.enforceall) {
|
|
for (var enforceopt in options.bool.enforcing) {
|
|
if (state.option[enforceopt] === undefined &&
|
|
!options.noenforceall[enforceopt]) {
|
|
state.option[enforceopt] = true;
|
|
}
|
|
}
|
|
for (var relaxopt in options.bool.relaxing) {
|
|
if (state.option[relaxopt] === undefined) {
|
|
state.option[relaxopt] = false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
function assume() {
|
|
processenforceall();
|
|
|
|
if (!state.option.es3) {
|
|
combine(predefined, vars.ecmaIdentifiers[5]);
|
|
}
|
|
|
|
if (state.option.esnext) {
|
|
combine(predefined, vars.ecmaIdentifiers[6]);
|
|
}
|
|
|
|
if (state.option.module) {
|
|
/**
|
|
* TODO: Extend this restriction to *all* "environmental" options.
|
|
*/
|
|
if (!hasParsedCode(funct)) {
|
|
error("E055", state.tokens.next, "module");
|
|
}
|
|
|
|
/**
|
|
* TODO: Extend this restriction to *all* ES6-specific options.
|
|
*/
|
|
if (!state.inESNext()) {
|
|
warning("W134", state.tokens.next, "module", 6);
|
|
}
|
|
}
|
|
|
|
if (state.option.couch) {
|
|
combine(predefined, vars.couch);
|
|
}
|
|
|
|
if (state.option.qunit) {
|
|
combine(predefined, vars.qunit);
|
|
}
|
|
|
|
if (state.option.rhino) {
|
|
combine(predefined, vars.rhino);
|
|
}
|
|
|
|
if (state.option.shelljs) {
|
|
combine(predefined, vars.shelljs);
|
|
combine(predefined, vars.node);
|
|
}
|
|
if (state.option.typed) {
|
|
combine(predefined, vars.typed);
|
|
}
|
|
|
|
if (state.option.phantom) {
|
|
combine(predefined, vars.phantom);
|
|
}
|
|
|
|
if (state.option.prototypejs) {
|
|
combine(predefined, vars.prototypejs);
|
|
}
|
|
|
|
if (state.option.node) {
|
|
combine(predefined, vars.node);
|
|
combine(predefined, vars.typed);
|
|
}
|
|
|
|
if (state.option.devel) {
|
|
combine(predefined, vars.devel);
|
|
}
|
|
|
|
if (state.option.dojo) {
|
|
combine(predefined, vars.dojo);
|
|
}
|
|
|
|
if (state.option.browser) {
|
|
combine(predefined, vars.browser);
|
|
combine(predefined, vars.typed);
|
|
}
|
|
|
|
if (state.option.browserify) {
|
|
combine(predefined, vars.browser);
|
|
combine(predefined, vars.typed);
|
|
combine(predefined, vars.browserify);
|
|
}
|
|
|
|
if (state.option.nonstandard) {
|
|
combine(predefined, vars.nonstandard);
|
|
}
|
|
|
|
if (state.option.jasmine) {
|
|
combine(predefined, vars.jasmine);
|
|
}
|
|
|
|
if (state.option.jquery) {
|
|
combine(predefined, vars.jquery);
|
|
}
|
|
|
|
if (state.option.mootools) {
|
|
combine(predefined, vars.mootools);
|
|
}
|
|
|
|
if (state.option.worker) {
|
|
combine(predefined, vars.worker);
|
|
}
|
|
|
|
if (state.option.wsh) {
|
|
combine(predefined, vars.wsh);
|
|
}
|
|
|
|
if (state.option.globalstrict && state.option.strict !== false) {
|
|
state.option.strict = true;
|
|
}
|
|
|
|
if (state.option.yui) {
|
|
combine(predefined, vars.yui);
|
|
}
|
|
|
|
if (state.option.mocha) {
|
|
combine(predefined, vars.mocha);
|
|
}
|
|
}
|
|
|
|
// Produce an error warning.
|
|
function quit(code, line, chr) {
|
|
var percentage = Math.floor((line / state.lines.length) * 100);
|
|
var message = messages.errors[code].desc;
|
|
|
|
throw {
|
|
name: "JSHintError",
|
|
line: line,
|
|
character: chr,
|
|
message: message + " (" + percentage + "% scanned).",
|
|
raw: message,
|
|
code: code
|
|
};
|
|
}
|
|
|
|
function isundef(scope, code, token, a) {
|
|
if (!state.ignored[code] && state.option.undef !== false) {
|
|
JSHINT.undefs.push([scope, code, token, a]);
|
|
}
|
|
}
|
|
|
|
function removeIgnoredMessages() {
|
|
var ignored = state.ignoredLines;
|
|
|
|
if (_.isEmpty(ignored)) return;
|
|
JSHINT.errors = _.reject(JSHINT.errors, function(err) { return ignored[err.line] });
|
|
}
|
|
|
|
function warning(code, t, a, b, c, d) {
|
|
var ch, l, w, msg;
|
|
|
|
if (/^W\d{3}$/.test(code)) {
|
|
if (state.ignored[code])
|
|
return;
|
|
|
|
msg = messages.warnings[code];
|
|
} else if (/E\d{3}/.test(code)) {
|
|
msg = messages.errors[code];
|
|
} else if (/I\d{3}/.test(code)) {
|
|
msg = messages.info[code];
|
|
}
|
|
|
|
t = t || state.tokens.next || {};
|
|
if (t.id === "(end)") { // `~
|
|
t = state.tokens.curr;
|
|
}
|
|
|
|
l = t.line || 0;
|
|
ch = t.from || 0;
|
|
|
|
w = {
|
|
id: "(error)",
|
|
raw: msg.desc,
|
|
code: msg.code,
|
|
evidence: state.lines[l - 1] || "",
|
|
line: l,
|
|
character: ch,
|
|
scope: JSHINT.scope,
|
|
a: a,
|
|
b: b,
|
|
c: c,
|
|
d: d
|
|
};
|
|
|
|
w.reason = supplant(msg.desc, w);
|
|
JSHINT.errors.push(w);
|
|
|
|
removeIgnoredMessages();
|
|
|
|
if (JSHINT.errors.length >= state.option.maxerr)
|
|
quit("E043", l, ch);
|
|
|
|
return w;
|
|
}
|
|
|
|
function warningAt(m, l, ch, a, b, c, d) {
|
|
return warning(m, {
|
|
line: l,
|
|
from: ch
|
|
}, a, b, c, d);
|
|
}
|
|
|
|
function error(m, t, a, b, c, d) {
|
|
warning(m, t, a, b, c, d);
|
|
}
|
|
|
|
function errorAt(m, l, ch, a, b, c, d) {
|
|
return error(m, {
|
|
line: l,
|
|
from: ch
|
|
}, a, b, c, d);
|
|
}
|
|
|
|
// Tracking of "internal" scripts, like eval containing a static string
|
|
function addInternalSrc(elem, src) {
|
|
var i;
|
|
i = {
|
|
id: "(internal)",
|
|
elem: elem,
|
|
value: src
|
|
};
|
|
JSHINT.internals.push(i);
|
|
return i;
|
|
}
|
|
|
|
// adds an indentifier to the relevant current scope and creates warnings/errors as necessary
|
|
// name: string
|
|
// opts: { type: string, token: token, isblockscoped: bool }
|
|
function addlabel(name, opts) {
|
|
|
|
var type = opts.type;
|
|
var token = opts.token;
|
|
var isblockscoped = opts.isblockscoped;
|
|
|
|
// Define label in the current function in the current scope.
|
|
if (type === "exception") {
|
|
if (_.has(funct["(context)"], name)) {
|
|
if (funct[name] !== true && !state.option.node) {
|
|
warning("W002", state.tokens.next, name);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (_.has(funct, name) && !funct["(global)"]) {
|
|
if (funct[name] === true) {
|
|
if (state.option.latedef) {
|
|
if ((state.option.latedef === true && _.contains([funct[name], type], "unction")) ||
|
|
!_.contains([funct[name], type], "unction")) {
|
|
warning("W003", state.tokens.next, name);
|
|
}
|
|
}
|
|
} else {
|
|
if ((!state.option.shadow || _.contains([ "inner", "outer" ], state.option.shadow)) &&
|
|
type !== "exception" || funct["(blockscope)"].getlabel(name)) {
|
|
warning("W004", state.tokens.next, name);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (funct["(context)"] && _.has(funct["(context)"], name) && type !== "function") {
|
|
if (state.option.shadow === "outer") {
|
|
warning("W123", state.tokens.next, name);
|
|
}
|
|
}
|
|
|
|
// if the identifier is blockscoped (a let or a const), add it only to the current blockscope
|
|
if (isblockscoped) {
|
|
funct["(blockscope)"].current.add(name, type, state.tokens.curr);
|
|
if (funct["(blockscope)"].atTop() && exported[name]) {
|
|
state.tokens.curr.exported = true;
|
|
}
|
|
} else {
|
|
funct["(blockscope)"].shadow(name);
|
|
funct[name] = type;
|
|
|
|
if (token) {
|
|
funct["(tokens)"][name] = token;
|
|
}
|
|
|
|
if (funct["(global)"]) {
|
|
global[name] = funct;
|
|
if (_.has(implied, name)) {
|
|
if (state.option.latedef) {
|
|
if ((state.option.latedef === true && _.contains([funct[name], type], "unction")) ||
|
|
!_.contains([funct[name], type], "unction")) {
|
|
warning("W003", state.tokens.next, name);
|
|
}
|
|
}
|
|
|
|
delete implied[name];
|
|
}
|
|
} else {
|
|
scope[name] = funct;
|
|
}
|
|
}
|
|
}
|
|
|
|
function doOption() {
|
|
var nt = state.tokens.next;
|
|
var body = nt.body.split(",").map(function(s) { return s.trim(); });
|
|
var predef = {};
|
|
if (nt.type === "globals") {
|
|
body.forEach(function(g) {
|
|
g = g.split(":");
|
|
var key = (g[0] || "").trim();
|
|
var val = (g[1] || "").trim();
|
|
|
|
if (key.charAt(0) === "-") {
|
|
key = key.slice(1);
|
|
val = false;
|
|
|
|
JSHINT.blacklist[key] = key;
|
|
delete predefined[key];
|
|
} else {
|
|
predef[key] = (val === "true");
|
|
}
|
|
});
|
|
|
|
combine(predefined, predef);
|
|
|
|
for (var key in predef) {
|
|
if (_.has(predef, key)) {
|
|
declared[key] = nt;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (nt.type === "exported") {
|
|
body.forEach(function(e) {
|
|
exported[e] = true;
|
|
});
|
|
}
|
|
|
|
if (nt.type === "members") {
|
|
membersOnly = membersOnly || {};
|
|
|
|
body.forEach(function(m) {
|
|
var ch1 = m.charAt(0);
|
|
var ch2 = m.charAt(m.length - 1);
|
|
|
|
if (ch1 === ch2 && (ch1 === "\"" || ch1 === "'")) {
|
|
m = m
|
|
.substr(1, m.length - 2)
|
|
.replace("\\\"", "\"");
|
|
}
|
|
|
|
membersOnly[m] = false;
|
|
});
|
|
}
|
|
|
|
var numvals = [
|
|
"maxstatements",
|
|
"maxparams",
|
|
"maxdepth",
|
|
"maxcomplexity",
|
|
"maxerr",
|
|
"maxlen",
|
|
"indent"
|
|
];
|
|
|
|
if (nt.type === "jshint" || nt.type === "jslint") {
|
|
body.forEach(function(g) {
|
|
g = g.split(":");
|
|
var key = (g[0] || "").trim();
|
|
var val = (g[1] || "").trim();
|
|
|
|
if (!checkOption(key, nt)) {
|
|
return;
|
|
}
|
|
|
|
if (numvals.indexOf(key) >= 0) {
|
|
// GH988 - numeric options can be disabled by setting them to `false`
|
|
if (val !== "false") {
|
|
val = +val;
|
|
|
|
if (typeof val !== "number" || !isFinite(val) || val <= 0 || Math.floor(val) !== val) {
|
|
error("E032", nt, g[1].trim());
|
|
return;
|
|
}
|
|
|
|
state.option[key] = val;
|
|
} else {
|
|
state.option[key] = key === "indent" ? 4 : false;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
if (key === "es5") {
|
|
if (val === "true" && state.option.es5) {
|
|
warning("I003");
|
|
}
|
|
}
|
|
|
|
if (key === "validthis") {
|
|
// `validthis` is valid only within a function scope.
|
|
|
|
if (funct["(global)"])
|
|
return void error("E009");
|
|
|
|
if (val !== "true" && val !== "false")
|
|
return void error("E002", nt);
|
|
|
|
state.option.validthis = (val === "true");
|
|
return;
|
|
}
|
|
|
|
if (key === "quotmark") {
|
|
switch (val) {
|
|
case "true":
|
|
case "false":
|
|
state.option.quotmark = (val === "true");
|
|
break;
|
|
case "double":
|
|
case "single":
|
|
state.option.quotmark = val;
|
|
break;
|
|
default:
|
|
error("E002", nt);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (key === "shadow") {
|
|
switch (val) {
|
|
case "true":
|
|
state.option.shadow = true;
|
|
break;
|
|
case "outer":
|
|
state.option.shadow = "outer";
|
|
break;
|
|
case "false":
|
|
case "inner":
|
|
state.option.shadow = "inner";
|
|
break;
|
|
default:
|
|
error("E002", nt);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (key === "unused") {
|
|
switch (val) {
|
|
case "true":
|
|
state.option.unused = true;
|
|
break;
|
|
case "false":
|
|
state.option.unused = false;
|
|
break;
|
|
case "vars":
|
|
case "strict":
|
|
state.option.unused = val;
|
|
break;
|
|
default:
|
|
error("E002", nt);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (key === "latedef") {
|
|
switch (val) {
|
|
case "true":
|
|
state.option.latedef = true;
|
|
break;
|
|
case "false":
|
|
state.option.latedef = false;
|
|
break;
|
|
case "nofunc":
|
|
state.option.latedef = "nofunc";
|
|
break;
|
|
default:
|
|
error("E002", nt);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (key === "ignore") {
|
|
switch (val) {
|
|
case "start":
|
|
state.ignoreLinterErrors = true;
|
|
break;
|
|
case "end":
|
|
state.ignoreLinterErrors = false;
|
|
break;
|
|
case "line":
|
|
state.ignoredLines[nt.line] = true;
|
|
removeIgnoredMessages();
|
|
break;
|
|
default:
|
|
error("E002", nt);
|
|
}
|
|
return;
|
|
}
|
|
|
|
var match = /^([+-])(W\d{3})$/g.exec(key);
|
|
if (match) {
|
|
// ignore for -W..., unignore for +W...
|
|
state.ignored[match[2]] = (match[1] === "-");
|
|
return;
|
|
}
|
|
|
|
var tn;
|
|
if (val === "true" || val === "false") {
|
|
if (nt.type === "jslint") {
|
|
tn = options.renamed[key] || key;
|
|
state.option[tn] = (val === "true");
|
|
|
|
if (options.inverted[tn] !== undefined) {
|
|
state.option[tn] = !state.option[tn];
|
|
}
|
|
} else {
|
|
state.option[key] = (val === "true");
|
|
}
|
|
|
|
if (key === "newcap") {
|
|
state.option["(explicitNewcap)"] = true;
|
|
}
|
|
return;
|
|
}
|
|
|
|
error("E002", nt);
|
|
});
|
|
|
|
assume();
|
|
}
|
|
}
|
|
|
|
// We need a peek function. If it has an argument, it peeks that much farther
|
|
// ahead. It is used to distinguish
|
|
// for ( var i in ...
|
|
// from
|
|
// for ( var i = ...
|
|
|
|
function peek(p) {
|
|
var i = p || 0, j = 0, t;
|
|
|
|
while (j <= i) {
|
|
t = lookahead[j];
|
|
if (!t) {
|
|
t = lookahead[j] = lex.token();
|
|
}
|
|
j += 1;
|
|
}
|
|
|
|
// Peeking past the end of the program should produce the "(end)" token.
|
|
if (!t && state.tokens.next.id === "(end)") {
|
|
return state.tokens.next;
|
|
}
|
|
|
|
return t;
|
|
}
|
|
|
|
function peekIgnoreEOL() {
|
|
var i = 0;
|
|
var t;
|
|
do {
|
|
t = peek(i++);
|
|
} while (t.id === "(endline)");
|
|
return t;
|
|
}
|
|
|
|
// Produce the next token. It looks for programming errors.
|
|
|
|
function advance(id, t) {
|
|
|
|
switch (state.tokens.curr.id) {
|
|
case "(number)":
|
|
if (state.tokens.next.id === ".") {
|
|
warning("W005", state.tokens.curr);
|
|
}
|
|
break;
|
|
case "-":
|
|
if (state.tokens.next.id === "-" || state.tokens.next.id === "--") {
|
|
warning("W006");
|
|
}
|
|
break;
|
|
case "+":
|
|
if (state.tokens.next.id === "+" || state.tokens.next.id === "++") {
|
|
warning("W007");
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (id && state.tokens.next.id !== id) {
|
|
if (t) {
|
|
if (state.tokens.next.id === "(end)") {
|
|
error("E019", t, t.id);
|
|
} else {
|
|
error("E020", state.tokens.next, id, t.id, t.line, state.tokens.next.value);
|
|
}
|
|
} else if (state.tokens.next.type !== "(identifier)" || state.tokens.next.value !== id) {
|
|
warning("W116", state.tokens.next, id, state.tokens.next.value);
|
|
}
|
|
}
|
|
|
|
state.tokens.prev = state.tokens.curr;
|
|
state.tokens.curr = state.tokens.next;
|
|
for (;;) {
|
|
state.tokens.next = lookahead.shift() || lex.token();
|
|
|
|
if (!state.tokens.next) { // No more tokens left, give up
|
|
quit("E041", state.tokens.curr.line);
|
|
}
|
|
|
|
if (state.tokens.next.id === "(end)" || state.tokens.next.id === "(error)") {
|
|
return;
|
|
}
|
|
|
|
if (state.tokens.next.check) {
|
|
state.tokens.next.check();
|
|
}
|
|
|
|
if (state.tokens.next.isSpecial) {
|
|
doOption();
|
|
} else {
|
|
if (state.tokens.next.id !== "(endline)") {
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
function isInfix(token) {
|
|
return token.infix || (!token.identifier && !token.template && !!token.led);
|
|
}
|
|
|
|
function isEndOfExpr() {
|
|
var curr = state.tokens.curr;
|
|
var next = state.tokens.next;
|
|
if (next.id === ";" || next.id === "}" || next.id === ":") {
|
|
return true;
|
|
}
|
|
if (isInfix(next) === isInfix(curr) || (curr.id === "yield" && state.inMoz())) {
|
|
return curr.line !== startLine(next);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
function isBeginOfExpr(prev) {
|
|
return !prev.left && prev.arity !== "unary";
|
|
}
|
|
|
|
// This is the heart of JSHINT, the Pratt parser. In addition to parsing, it
|
|
// is looking for ad hoc lint patterns. We add .fud to Pratt's model, which is
|
|
// like .nud except that it is only used on the first token of a statement.
|
|
// Having .fud makes it much easier to define statement-oriented languages like
|
|
// JavaScript. I retained Pratt's nomenclature.
|
|
|
|
// .nud Null denotation
|
|
// .fud First null denotation
|
|
// .led Left denotation
|
|
// lbp Left binding power
|
|
// rbp Right binding power
|
|
|
|
// They are elements of the parsing method called Top Down Operator Precedence.
|
|
|
|
function expression(rbp, initial) {
|
|
var left, isArray = false, isObject = false, isLetExpr = false;
|
|
|
|
state.nameStack.push();
|
|
|
|
// if current expression is a let expression
|
|
if (!initial && state.tokens.next.value === "let" && peek(0).value === "(") {
|
|
if (!state.inMoz()) {
|
|
warning("W118", state.tokens.next, "let expressions");
|
|
}
|
|
isLetExpr = true;
|
|
// create a new block scope we use only for the current expression
|
|
funct["(blockscope)"].stack();
|
|
advance("let");
|
|
advance("(");
|
|
state.tokens.prev.fud();
|
|
advance(")");
|
|
}
|
|
|
|
if (state.tokens.next.id === "(end)")
|
|
error("E006", state.tokens.curr);
|
|
|
|
var isDangerous =
|
|
state.option.asi &&
|
|
state.tokens.prev.line !== startLine(state.tokens.curr) &&
|
|
_.contains(["]", ")"], state.tokens.prev.id) &&
|
|
_.contains(["[", "("], state.tokens.curr.id);
|
|
|
|
if (isDangerous)
|
|
warning("W014", state.tokens.curr, state.tokens.curr.id);
|
|
|
|
advance();
|
|
|
|
if (initial) {
|
|
funct["(verb)"] = state.tokens.curr.value;
|
|
state.tokens.curr.beginsStmt = true;
|
|
}
|
|
|
|
if (initial === true && state.tokens.curr.fud) {
|
|
left = state.tokens.curr.fud();
|
|
} else {
|
|
if (state.tokens.curr.nud) {
|
|
left = state.tokens.curr.nud();
|
|
} else {
|
|
error("E030", state.tokens.curr, state.tokens.curr.id);
|
|
}
|
|
|
|
// TODO: use pratt mechanics rather than special casing template tokens
|
|
while ((rbp < state.tokens.next.lbp || state.tokens.next.type === "(template)") &&
|
|
!isEndOfExpr()) {
|
|
isArray = state.tokens.curr.value === "Array";
|
|
isObject = state.tokens.curr.value === "Object";
|
|
|
|
// #527, new Foo.Array(), Foo.Array(), new Foo.Object(), Foo.Object()
|
|
// Line breaks in IfStatement heads exist to satisfy the checkJSHint
|
|
// "Line too long." error.
|
|
if (left && (left.value || (left.first && left.first.value))) {
|
|
// If the left.value is not "new", or the left.first.value is a "."
|
|
// then safely assume that this is not "new Array()" and possibly
|
|
// not "new Object()"...
|
|
if (left.value !== "new" ||
|
|
(left.first && left.first.value && left.first.value === ".")) {
|
|
isArray = false;
|
|
// ...In the case of Object, if the left.value and state.tokens.curr.value
|
|
// are not equal, then safely assume that this not "new Object()"
|
|
if (left.value !== state.tokens.curr.value) {
|
|
isObject = false;
|
|
}
|
|
}
|
|
}
|
|
|
|
advance();
|
|
|
|
if (isArray && state.tokens.curr.id === "(" && state.tokens.next.id === ")") {
|
|
warning("W009", state.tokens.curr);
|
|
}
|
|
|
|
if (isObject && state.tokens.curr.id === "(" && state.tokens.next.id === ")") {
|
|
warning("W010", state.tokens.curr);
|
|
}
|
|
|
|
if (left && state.tokens.curr.led) {
|
|
left = state.tokens.curr.led(left);
|
|
} else {
|
|
error("E033", state.tokens.curr, state.tokens.curr.id);
|
|
}
|
|
}
|
|
}
|
|
if (isLetExpr) {
|
|
funct["(blockscope)"].unstack();
|
|
}
|
|
|
|
state.nameStack.pop();
|
|
|
|
return left;
|
|
}
|
|
|
|
|
|
// Functions for conformance of style.
|
|
|
|
function startLine(token) {
|
|
return token.startLine || token.line;
|
|
}
|
|
|
|
function nobreaknonadjacent(left, right) {
|
|
left = left || state.tokens.curr;
|
|
right = right || state.tokens.next;
|
|
if (!state.option.laxbreak && left.line !== startLine(right)) {
|
|
warning("W014", right, right.value);
|
|
}
|
|
}
|
|
|
|
function nolinebreak(t) {
|
|
t = t || state.tokens.curr;
|
|
if (t.line !== startLine(state.tokens.next)) {
|
|
warning("E022", t, t.value);
|
|
}
|
|
}
|
|
|
|
function nobreakcomma(left, right) {
|
|
if (left.line !== startLine(right)) {
|
|
if (!state.option.laxcomma) {
|
|
if (comma.first) {
|
|
warning("I001");
|
|
comma.first = false;
|
|
}
|
|
warning("W014", left, right.value);
|
|
}
|
|
}
|
|
}
|
|
|
|
function comma(opts) {
|
|
opts = opts || {};
|
|
|
|
if (!opts.peek) {
|
|
nobreakcomma(state.tokens.curr, state.tokens.next);
|
|
advance(",");
|
|
} else {
|
|
nobreakcomma(state.tokens.prev, state.tokens.curr);
|
|
}
|
|
|
|
if (state.tokens.next.identifier && !(opts.property && state.inES5())) {
|
|
// Keywords that cannot follow a comma operator.
|
|
switch (state.tokens.next.value) {
|
|
case "break":
|
|
case "case":
|
|
case "catch":
|
|
case "continue":
|
|
case "default":
|
|
case "do":
|
|
case "else":
|
|
case "finally":
|
|
case "for":
|
|
case "if":
|
|
case "in":
|
|
case "instanceof":
|
|
case "return":
|
|
case "switch":
|
|
case "throw":
|
|
case "try":
|
|
case "var":
|
|
case "let":
|
|
case "while":
|
|
case "with":
|
|
error("E024", state.tokens.next, state.tokens.next.value);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (state.tokens.next.type === "(punctuator)") {
|
|
switch (state.tokens.next.value) {
|
|
case "}":
|
|
case "]":
|
|
case ",":
|
|
if (opts.allowTrailing) {
|
|
return true;
|
|
}
|
|
|
|
/* falls through */
|
|
case ")":
|
|
error("E024", state.tokens.next, state.tokens.next.value);
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// Functional constructors for making the symbols that will be inherited by
|
|
// tokens.
|
|
|
|
function symbol(s, p) {
|
|
var x = state.syntax[s];
|
|
if (!x || typeof x !== "object") {
|
|
state.syntax[s] = x = {
|
|
id: s,
|
|
lbp: p,
|
|
value: s
|
|
};
|
|
}
|
|
return x;
|
|
}
|
|
|
|
function delim(s) {
|
|
var x = symbol(s, 0);
|
|
x.delim = true;
|
|
return x;
|
|
}
|
|
|
|
function stmt(s, f) {
|
|
var x = delim(s);
|
|
x.identifier = x.reserved = true;
|
|
x.fud = f;
|
|
return x;
|
|
}
|
|
|
|
function blockstmt(s, f) {
|
|
var x = stmt(s, f);
|
|
x.block = true;
|
|
return x;
|
|
}
|
|
|
|
function reserveName(x) {
|
|
var c = x.id.charAt(0);
|
|
if ((c >= "a" && c <= "z") || (c >= "A" && c <= "Z")) {
|
|
x.identifier = x.reserved = true;
|
|
}
|
|
return x;
|
|
}
|
|
|
|
function prefix(s, f) {
|
|
var x = symbol(s, 150);
|
|
reserveName(x);
|
|
|
|
x.nud = (typeof f === "function") ? f : function() {
|
|
this.arity = "unary";
|
|
this.right = expression(150);
|
|
|
|
if (this.id === "++" || this.id === "--") {
|
|
if (state.option.plusplus) {
|
|
warning("W016", this, this.id);
|
|
} else if (this.right && (!this.right.identifier || isReserved(this.right)) &&
|
|
this.right.id !== "." && this.right.id !== "[") {
|
|
warning("W017", this);
|
|
}
|
|
|
|
// detect increment/decrement of a const
|
|
// in the case of a.b, right will be the "." punctuator
|
|
if (this.right && this.right.identifier) {
|
|
if (funct["(blockscope)"].labeltype(this.right.value) === "const") {
|
|
error("E013", this, this.right.value);
|
|
}
|
|
}
|
|
}
|
|
|
|
return this;
|
|
};
|
|
|
|
return x;
|
|
}
|
|
|
|
function type(s, f) {
|
|
var x = delim(s);
|
|
x.type = s;
|
|
x.nud = f;
|
|
return x;
|
|
}
|
|
|
|
function reserve(name, func) {
|
|
var x = type(name, func);
|
|
x.identifier = true;
|
|
x.reserved = true;
|
|
return x;
|
|
}
|
|
|
|
function FutureReservedWord(name, meta) {
|
|
var x = type(name, (meta && meta.nud) || function() {
|
|
return this;
|
|
});
|
|
|
|
meta = meta || {};
|
|
meta.isFutureReservedWord = true;
|
|
|
|
x.value = name;
|
|
x.identifier = true;
|
|
x.reserved = true;
|
|
x.meta = meta;
|
|
|
|
return x;
|
|
}
|
|
|
|
function reservevar(s, v) {
|
|
return reserve(s, function() {
|
|
if (typeof v === "function") {
|
|
v(this);
|
|
}
|
|
return this;
|
|
});
|
|
}
|
|
|
|
function infix(s, f, p, w) {
|
|
var x = symbol(s, p);
|
|
reserveName(x);
|
|
x.infix = true;
|
|
x.led = function(left) {
|
|
if (!w) {
|
|
nobreaknonadjacent(state.tokens.prev, state.tokens.curr);
|
|
}
|
|
if ((s === "in" || s === "instanceof") && left.id === "!") {
|
|
warning("W018", left, "!");
|
|
}
|
|
if (typeof f === "function") {
|
|
return f(left, this);
|
|
} else {
|
|
this.left = left;
|
|
this.right = expression(p);
|
|
return this;
|
|
}
|
|
};
|
|
return x;
|
|
}
|
|
|
|
|
|
function application(s) {
|
|
var x = symbol(s, 42);
|
|
|
|
x.led = function(left) {
|
|
nobreaknonadjacent(state.tokens.prev, state.tokens.curr);
|
|
|
|
this.left = left;
|
|
this.right = doFunction({ type: "arrow", loneArg: left });
|
|
return this;
|
|
};
|
|
return x;
|
|
}
|
|
|
|
function relation(s, f) {
|
|
var x = symbol(s, 100);
|
|
|
|
x.led = function(left) {
|
|
nobreaknonadjacent(state.tokens.prev, state.tokens.curr);
|
|
this.left = left;
|
|
var right = this.right = expression(100);
|
|
|
|
if (isIdentifier(left, "NaN") || isIdentifier(right, "NaN")) {
|
|
warning("W019", this);
|
|
} else if (f) {
|
|
f.apply(this, [left, right]);
|
|
}
|
|
|
|
if (!left || !right) {
|
|
quit("E041", state.tokens.curr.line);
|
|
}
|
|
|
|
if (left.id === "!") {
|
|
warning("W018", left, "!");
|
|
}
|
|
|
|
if (right.id === "!") {
|
|
warning("W018", right, "!");
|
|
}
|
|
|
|
return this;
|
|
};
|
|
return x;
|
|
}
|
|
|
|
function isPoorRelation(node) {
|
|
return node &&
|
|
((node.type === "(number)" && +node.value === 0) ||
|
|
(node.type === "(string)" && node.value === "") ||
|
|
(node.type === "null" && !state.option.eqnull) ||
|
|
node.type === "true" ||
|
|
node.type === "false" ||
|
|
node.type === "undefined");
|
|
}
|
|
|
|
var typeofValues = {};
|
|
typeofValues.legacy = [
|
|
// E4X extended the `typeof` operator to return "xml" for the XML and
|
|
// XMLList types it introduced.
|
|
// Ref: 11.3.2 The typeof Operator
|
|
// http://www.ecma-international.org/publications/files/ECMA-ST/Ecma-357.pdf
|
|
"xml",
|
|
// IE<9 reports "unknown" when the `typeof` operator is applied to an
|
|
// object existing across a COM+ bridge. In lieu of official documentation
|
|
// (which does not exist), see:
|
|
// http://robertnyman.com/2005/12/21/what-is-typeof-unknown/
|
|
"unknown"
|
|
];
|
|
typeofValues.es3 = [
|
|
"undefined", "boolean", "number", "string", "function", "object",
|
|
];
|
|
typeofValues.es3 = typeofValues.es3.concat(typeofValues.legacy);
|
|
typeofValues.es6 = typeofValues.es3.concat("symbol");
|
|
|
|
// Checks whether the 'typeof' operator is used with the correct
|
|
// value. For docs on 'typeof' see:
|
|
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/typeof
|
|
function isTypoTypeof(left, right, state) {
|
|
var values;
|
|
|
|
if (state.option.notypeof)
|
|
return false;
|
|
|
|
if (!left || !right)
|
|
return false;
|
|
|
|
values = state.inESNext() ? typeofValues.es6 : typeofValues.es3;
|
|
|
|
if (right.type === "(identifier)" && right.value === "typeof" && left.type === "(string)")
|
|
return !_.contains(values, left.value);
|
|
|
|
return false;
|
|
}
|
|
|
|
function isGlobalEval(left, state, funct) {
|
|
var isGlobal = false;
|
|
|
|
// permit methods to refer to an "eval" key in their own context
|
|
if (left.type === "this" && funct["(context)"] === null) {
|
|
isGlobal = true;
|
|
}
|
|
// permit use of "eval" members of objects
|
|
else if (left.type === "(identifier)") {
|
|
if (state.option.node && left.value === "global") {
|
|
isGlobal = true;
|
|
}
|
|
|
|
else if (state.option.browser && (left.value === "window" || left.value === "document")) {
|
|
isGlobal = true;
|
|
}
|
|
}
|
|
|
|
return isGlobal;
|
|
}
|
|
|
|
function findNativePrototype(left) {
|
|
var natives = [
|
|
"Array", "ArrayBuffer", "Boolean", "Collator", "DataView", "Date",
|
|
"DateTimeFormat", "Error", "EvalError", "Float32Array", "Float64Array",
|
|
"Function", "Infinity", "Intl", "Int16Array", "Int32Array", "Int8Array",
|
|
"Iterator", "Number", "NumberFormat", "Object", "RangeError",
|
|
"ReferenceError", "RegExp", "StopIteration", "String", "SyntaxError",
|
|
"TypeError", "Uint16Array", "Uint32Array", "Uint8Array", "Uint8ClampedArray",
|
|
"URIError"
|
|
];
|
|
|
|
function walkPrototype(obj) {
|
|
if (typeof obj !== "object") return;
|
|
return obj.right === "prototype" ? obj : walkPrototype(obj.left);
|
|
}
|
|
|
|
function walkNative(obj) {
|
|
while (!obj.identifier && typeof obj.left === "object")
|
|
obj = obj.left;
|
|
|
|
if (obj.identifier && natives.indexOf(obj.value) >= 0)
|
|
return obj.value;
|
|
}
|
|
|
|
var prototype = walkPrototype(left);
|
|
if (prototype) return walkNative(prototype);
|
|
}
|
|
|
|
function assignop(s, f, p) {
|
|
var x = infix(s, typeof f === "function" ? f : function(left, that) {
|
|
that.left = left;
|
|
|
|
if (left) {
|
|
if (state.option.freeze) {
|
|
var nativeObject = findNativePrototype(left);
|
|
if (nativeObject)
|
|
warning("W121", left, nativeObject);
|
|
}
|
|
|
|
if (predefined[left.value] === false &&
|
|
scope[left.value]["(global)"] === true) {
|
|
warning("W020", left);
|
|
} else if (left["function"]) {
|
|
warning("W021", left, left.value);
|
|
}
|
|
|
|
if (funct["(blockscope)"].labeltype(left.value) === "const") {
|
|
error("E013", left, left.value);
|
|
}
|
|
|
|
if (left.id === ".") {
|
|
if (!left.left) {
|
|
warning("E031", that);
|
|
} else if (left.left.value === "arguments" && !state.isStrict()) {
|
|
warning("E031", that);
|
|
}
|
|
|
|
state.nameStack.set(state.tokens.prev);
|
|
that.right = expression(10);
|
|
return that;
|
|
} else if (left.id === "[") {
|
|
if (state.tokens.curr.left.first) {
|
|
state.tokens.curr.left.first.forEach(function(t) {
|
|
if (t && funct[t.value] === "const") {
|
|
error("E013", t, t.value);
|
|
}
|
|
});
|
|
} else if (!left.left) {
|
|
warning("E031", that);
|
|
} else if (left.left.value === "arguments" && !state.isStrict()) {
|
|
warning("E031", that);
|
|
}
|
|
|
|
state.nameStack.set(left.right);
|
|
|
|
that.right = expression(10);
|
|
return that;
|
|
} else if (left.identifier && !isReserved(left)) {
|
|
if (funct[left.value] === "exception") {
|
|
warning("W022", left);
|
|
}
|
|
state.nameStack.set(left);
|
|
that.right = expression(10);
|
|
return that;
|
|
}
|
|
|
|
if (left === state.syntax["function"]) {
|
|
warning("W023", state.tokens.curr);
|
|
}
|
|
}
|
|
|
|
error("E031", that);
|
|
}, p);
|
|
|
|
x.exps = true;
|
|
x.assign = true;
|
|
return x;
|
|
}
|
|
|
|
|
|
function bitwise(s, f, p) {
|
|
var x = symbol(s, p);
|
|
reserveName(x);
|
|
x.led = (typeof f === "function") ? f : function(left) {
|
|
if (state.option.bitwise) {
|
|
warning("W016", this, this.id);
|
|
}
|
|
this.left = left;
|
|
this.right = expression(p);
|
|
return this;
|
|
};
|
|
return x;
|
|
}
|
|
|
|
|
|
function bitwiseassignop(s) {
|
|
return assignop(s, function(left, that) {
|
|
if (state.option.bitwise) {
|
|
warning("W016", that, that.id);
|
|
}
|
|
|
|
if (left) {
|
|
if (left.id === "." || left.id === "[" ||
|
|
(left.identifier && !isReserved(left))) {
|
|
expression(10);
|
|
return that;
|
|
}
|
|
if (left === state.syntax["function"]) {
|
|
warning("W023", state.tokens.curr);
|
|
}
|
|
return that;
|
|
}
|
|
error("E031", that);
|
|
}, 20);
|
|
}
|
|
|
|
function suffix(s) {
|
|
var x = symbol(s, 150);
|
|
|
|
x.led = function(left) {
|
|
// this = suffix e.g. "++" punctuator
|
|
// left = symbol operated e.g. "a" identifier or "a.b" punctuator
|
|
if (state.option.plusplus) {
|
|
warning("W016", this, this.id);
|
|
} else if ((!left.identifier || isReserved(left)) && left.id !== "." && left.id !== "[") {
|
|
warning("W017", this);
|
|
}
|
|
|
|
// detect increment/decrement of a const
|
|
// in the case of a.b, left will be the "." punctuator
|
|
if (left && left.identifier) {
|
|
if (funct["(blockscope)"].labeltype(left.value) === "const") {
|
|
error("E013", this, left.value);
|
|
}
|
|
}
|
|
|
|
this.left = left;
|
|
return this;
|
|
};
|
|
return x;
|
|
}
|
|
|
|
// fnparam means that this identifier is being defined as a function
|
|
// argument (see identifier())
|
|
// prop means that this identifier is that of an object property
|
|
|
|
function optionalidentifier(fnparam, prop, preserve) {
|
|
if (!state.tokens.next.identifier) {
|
|
return;
|
|
}
|
|
|
|
if (!preserve) {
|
|
advance();
|
|
}
|
|
|
|
var curr = state.tokens.curr;
|
|
var val = state.tokens.curr.value;
|
|
|
|
if (!isReserved(curr)) {
|
|
return val;
|
|
}
|
|
|
|
if (prop) {
|
|
if (state.inES5()) {
|
|
return val;
|
|
}
|
|
}
|
|
|
|
if (fnparam && val === "undefined") {
|
|
return val;
|
|
}
|
|
|
|
warning("W024", state.tokens.curr, state.tokens.curr.id);
|
|
return val;
|
|
}
|
|
|
|
// fnparam means that this identifier is being defined as a function
|
|
// argument
|
|
// prop means that this identifier is that of an object property
|
|
function identifier(fnparam, prop) {
|
|
var i = optionalidentifier(fnparam, prop, false);
|
|
if (i) {
|
|
return i;
|
|
}
|
|
|
|
// parameter destructuring with rest operator
|
|
if (state.tokens.next.value === "...") {
|
|
if (!state.option.esnext) {
|
|
warning("W119", state.tokens.next, "spread/rest operator");
|
|
}
|
|
advance();
|
|
|
|
if (checkPunctuators(state.tokens.next, ["..."])) {
|
|
warning("E024", state.tokens.next, "...");
|
|
while (checkPunctuators(state.tokens.next, ["..."])) {
|
|
advance();
|
|
}
|
|
}
|
|
|
|
if (!state.tokens.next.identifier) {
|
|
warning("E024", state.tokens.curr, "...");
|
|
return;
|
|
}
|
|
|
|
return identifier(fnparam, prop);
|
|
} else {
|
|
error("E030", state.tokens.next, state.tokens.next.value);
|
|
|
|
// The token should be consumed after a warning is issued so the parser
|
|
// can continue as though an identifier were found. The semicolon token
|
|
// should not be consumed in this way so that the parser interprets it as
|
|
// a statement delimeter;
|
|
if (state.tokens.next.id !== ";") {
|
|
advance();
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
function reachable(controlToken) {
|
|
var i = 0, t;
|
|
if (state.tokens.next.id !== ";" || controlToken.inBracelessBlock) {
|
|
return;
|
|
}
|
|
for (;;) {
|
|
do {
|
|
t = peek(i);
|
|
i += 1;
|
|
} while (t.id !== "(end)" && t.id === "(comment)");
|
|
|
|
if (t.reach) {
|
|
return;
|
|
}
|
|
if (t.id !== "(endline)") {
|
|
if (t.id === "function") {
|
|
if (state.option.latedef === true) {
|
|
warning("W026", t);
|
|
}
|
|
break;
|
|
}
|
|
|
|
warning("W027", t, t.value, controlToken.value);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
function parseFinalSemicolon() {
|
|
if (state.tokens.next.id !== ";") {
|
|
// don't complain about unclosed templates / strings
|
|
if (state.tokens.next.isUnclosed) return advance();
|
|
if (!state.option.asi) {
|
|
// If this is the last statement in a block that ends on
|
|
// the same line *and* option lastsemic is on, ignore the warning.
|
|
// Otherwise, complain about missing semicolon.
|
|
if (!state.option.lastsemic || state.tokens.next.id !== "}" ||
|
|
startLine(state.tokens.next) !== state.tokens.curr.line) {
|
|
warningAt("W033", state.tokens.curr.line, state.tokens.curr.character);
|
|
}
|
|
}
|
|
} else {
|
|
advance(";");
|
|
}
|
|
}
|
|
|
|
function statement() {
|
|
var i = indent, r, s = scope, t = state.tokens.next;
|
|
|
|
if (t.id === ";") {
|
|
advance(";");
|
|
return;
|
|
}
|
|
|
|
// Is this a labelled statement?
|
|
var res = isReserved(t);
|
|
|
|
// We're being more tolerant here: if someone uses
|
|
// a FutureReservedWord as a label, we warn but proceed
|
|
// anyway.
|
|
|
|
if (res && t.meta && t.meta.isFutureReservedWord && peek().id === ":") {
|
|
warning("W024", t, t.id);
|
|
res = false;
|
|
}
|
|
|
|
// detect a module import declaration
|
|
if (t.value === "module" && t.type === "(identifier)") {
|
|
if (peek().type === "(identifier)") {
|
|
if (!state.inESNext()) {
|
|
warning("W119", state.tokens.curr, "module");
|
|
}
|
|
|
|
advance("module");
|
|
var name = identifier();
|
|
addlabel(name, { type: "unused", token: state.tokens.curr });
|
|
advance("from");
|
|
advance("(string)");
|
|
parseFinalSemicolon();
|
|
return;
|
|
}
|
|
}
|
|
|
|
if (t.identifier && !res && peek().id === ":") {
|
|
advance();
|
|
advance(":");
|
|
scope = Object.create(s);
|
|
addlabel(t.value, { type: "label" });
|
|
|
|
if (!state.tokens.next.labelled && state.tokens.next.value !== "{") {
|
|
warning("W028", state.tokens.next, t.value, state.tokens.next.value);
|
|
}
|
|
|
|
state.tokens.next.label = t.value;
|
|
t = state.tokens.next;
|
|
}
|
|
|
|
// Is it a lonely block?
|
|
|
|
if (t.id === "{") {
|
|
// Is it a switch case block?
|
|
//
|
|
// switch (foo) {
|
|
// case bar: { <= here.
|
|
// ...
|
|
// }
|
|
// }
|
|
var iscase = (funct["(verb)"] === "case" && state.tokens.curr.value === ":");
|
|
block(true, true, false, false, iscase);
|
|
return;
|
|
}
|
|
|
|
// Parse the statement.
|
|
|
|
r = expression(0, true);
|
|
|
|
if (r && (!r.identifier || r.value !== "function") && (r.type !== "(punctuator)")) {
|
|
if (!state.isStrict() &&
|
|
state.option.globalstrict &&
|
|
state.option.strict) {
|
|
warning("E007");
|
|
}
|
|
}
|
|
|
|
// Look for the final semicolon.
|
|
|
|
if (!t.block) {
|
|
if (!state.option.expr && (!r || !r.exps)) {
|
|
warning("W030", state.tokens.curr);
|
|
} else if (state.option.nonew && r && r.left && r.id === "(" && r.left.id === "new") {
|
|
warning("W031", t);
|
|
}
|
|
parseFinalSemicolon();
|
|
}
|
|
|
|
|
|
// Restore the indentation.
|
|
|
|
indent = i;
|
|
scope = s;
|
|
return r;
|
|
}
|
|
|
|
|
|
function statements() {
|
|
var a = [], p;
|
|
|
|
while (!state.tokens.next.reach && state.tokens.next.id !== "(end)") {
|
|
if (state.tokens.next.id === ";") {
|
|
p = peek();
|
|
|
|
if (!p || (p.id !== "(" && p.id !== "[")) {
|
|
warning("W032");
|
|
}
|
|
|
|
advance(";");
|
|
} else {
|
|
a.push(statement());
|
|
}
|
|
}
|
|
return a;
|
|
}
|
|
|
|
|
|
/*
|
|
* read all directives
|
|
* recognizes a simple form of asi, but always
|
|
* warns, if it is used
|
|
*/
|
|
function directives() {
|
|
var i, p, pn;
|
|
|
|
while (state.tokens.next.id === "(string)") {
|
|
p = peek(0);
|
|
if (p.id === "(endline)") {
|
|
i = 1;
|
|
do {
|
|
pn = peek(i++);
|
|
} while (pn.id === "(endline)");
|
|
if (pn.id === ";") {
|
|
p = pn;
|
|
} else if (pn.value === "[" || pn.value === ".") {
|
|
// string -> [ | . is a valid production
|
|
return;
|
|
} else if (!state.option.asi || pn.value === "(") {
|
|
// string -> ( is not a valid production
|
|
warning("W033", state.tokens.next);
|
|
}
|
|
} else if (p.id === "." || p.id === "[") {
|
|
return;
|
|
} else if (p.id !== ";") {
|
|
warning("W033", p);
|
|
}
|
|
|
|
advance();
|
|
if (state.directive[state.tokens.curr.value]) {
|
|
warning("W034", state.tokens.curr, state.tokens.curr.value);
|
|
}
|
|
|
|
if (state.tokens.curr.value === "use strict") {
|
|
if (!state.option["(explicitNewcap)"]) {
|
|
state.option.newcap = true;
|
|
}
|
|
state.option.undef = true;
|
|
}
|
|
|
|
// there's no directive negation, so always set to true
|
|
state.directive[state.tokens.curr.value] = true;
|
|
|
|
if (p.id === ";") {
|
|
advance(";");
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Parses a single block. A block is a sequence of statements wrapped in
|
|
* braces.
|
|
*
|
|
* ordinary - true for everything but function bodies and try blocks.
|
|
* stmt - true if block can be a single statement (e.g. in if/for/while).
|
|
* isfunc - true if block is a function body
|
|
* isfatarrow - true if its a body of a fat arrow function
|
|
* iscase - true if block is a switch case block
|
|
*/
|
|
function block(ordinary, stmt, isfunc, isfatarrow, iscase) {
|
|
var a,
|
|
b = inblock,
|
|
old_indent = indent,
|
|
m,
|
|
s = scope,
|
|
t,
|
|
line,
|
|
d;
|
|
|
|
inblock = ordinary;
|
|
|
|
if (!ordinary || !state.option.funcscope)
|
|
scope = Object.create(scope);
|
|
|
|
t = state.tokens.next;
|
|
|
|
var metrics = funct["(metrics)"];
|
|
metrics.nestedBlockDepth += 1;
|
|
metrics.verifyMaxNestedBlockDepthPerFunction();
|
|
|
|
if (state.tokens.next.id === "{") {
|
|
advance("{");
|
|
|
|
// create a new block scope
|
|
funct["(blockscope)"].stack();
|
|
|
|
line = state.tokens.curr.line;
|
|
if (state.tokens.next.id !== "}") {
|
|
indent += state.option.indent;
|
|
while (!ordinary && state.tokens.next.from > indent) {
|
|
indent += state.option.indent;
|
|
}
|
|
|
|
if (isfunc) {
|
|
m = {};
|
|
for (d in state.directive) {
|
|
if (_.has(state.directive, d)) {
|
|
m[d] = state.directive[d];
|
|
}
|
|
}
|
|
directives();
|
|
|
|
if (state.option.strict && funct["(context)"]["(global)"]) {
|
|
if (!m["use strict"] && !state.isStrict()) {
|
|
warning("E007");
|
|
}
|
|
}
|
|
}
|
|
|
|
a = statements();
|
|
|
|
metrics.statementCount += a.length;
|
|
|
|
if (isfunc) {
|
|
state.directive = m;
|
|
}
|
|
|
|
indent -= state.option.indent;
|
|
}
|
|
|
|
advance("}", t);
|
|
|
|
funct["(blockscope)"].unstack();
|
|
|
|
indent = old_indent;
|
|
} else if (!ordinary) {
|
|
if (isfunc) {
|
|
m = {};
|
|
if (stmt && !isfatarrow && !state.inMoz()) {
|
|
error("W118", state.tokens.curr, "function closure expressions");
|
|
}
|
|
|
|
if (!stmt) {
|
|
for (d in state.directive) {
|
|
if (_.has(state.directive, d)) {
|
|
m[d] = state.directive[d];
|
|
}
|
|
}
|
|
}
|
|
expression(10);
|
|
|
|
if (state.option.strict && funct["(context)"]["(global)"]) {
|
|
if (!m["use strict"] && !state.isStrict()) {
|
|
warning("E007");
|
|
}
|
|
}
|
|
} else {
|
|
error("E021", state.tokens.next, "{", state.tokens.next.value);
|
|
}
|
|
} else {
|
|
|
|
// check to avoid let declaration not within a block
|
|
funct["(noblockscopedvar)"] = true;
|
|
|
|
if (!stmt || state.option.curly) {
|
|
warning("W116", state.tokens.next, "{", state.tokens.next.value);
|
|
}
|
|
|
|
state.tokens.next.inBracelessBlock = true;
|
|
indent += state.option.indent;
|
|
// test indentation only if statement is in new line
|
|
a = [statement()];
|
|
indent -= state.option.indent;
|
|
|
|
delete funct["(noblockscopedvar)"];
|
|
}
|
|
|
|
// Don't clear and let it propagate out if it is "break", "return" or similar in switch case
|
|
switch (funct["(verb)"]) {
|
|
case "break":
|
|
case "continue":
|
|
case "return":
|
|
case "throw":
|
|
if (iscase) {
|
|
break;
|
|
}
|
|
|
|
/* falls through */
|
|
default:
|
|
funct["(verb)"] = null;
|
|
}
|
|
|
|
if (!ordinary || !state.option.funcscope) scope = s;
|
|
inblock = b;
|
|
if (ordinary && state.option.noempty && (!a || a.length === 0)) {
|
|
warning("W035", state.tokens.prev);
|
|
}
|
|
metrics.nestedBlockDepth -= 1;
|
|
return a;
|
|
}
|
|
|
|
|
|
function countMember(m) {
|
|
if (membersOnly && typeof membersOnly[m] !== "boolean") {
|
|
warning("W036", state.tokens.curr, m);
|
|
}
|
|
if (typeof member[m] === "number") {
|
|
member[m] += 1;
|
|
} else {
|
|
member[m] = 1;
|
|
}
|
|
}
|
|
|
|
|
|
function note_implied(tkn) {
|
|
var name = tkn.value;
|
|
var desc = Object.getOwnPropertyDescriptor(implied, name);
|
|
|
|
if (!desc)
|
|
implied[name] = [tkn.line];
|
|
else
|
|
desc.value.push(tkn.line);
|
|
}
|
|
|
|
|
|
// Build the syntax table by declaring the syntactic elements of the language.
|
|
|
|
type("(number)", function() {
|
|
return this;
|
|
});
|
|
|
|
type("(string)", function() {
|
|
return this;
|
|
});
|
|
|
|
state.syntax["(identifier)"] = {
|
|
type: "(identifier)",
|
|
lbp: 0,
|
|
identifier: true,
|
|
|
|
nud: function() {
|
|
var v = this.value;
|
|
// s will be either the function object 'funct' that the identifier points at
|
|
// or it will be a boolean if it is a predefined variable
|
|
var s = scope[v];
|
|
var f;
|
|
var block;
|
|
|
|
// If this identifier is the lone parameter to a shorthand "fat arrow"
|
|
// function definition, i.e.
|
|
//
|
|
// x => x;
|
|
//
|
|
// ...it should not be considered as a variable in the current scope. It
|
|
// will be added to the scope of the new function when the next token is
|
|
// parsed, so it can be safely ignored for now.
|
|
if (state.tokens.next.id === "=>") {
|
|
return this;
|
|
}
|
|
|
|
block = funct["(blockscope)"].getlabel(v);
|
|
|
|
if (typeof s === "function") {
|
|
// Protection against accidental inheritance.
|
|
s = undefined;
|
|
} else if (!block && typeof s === "boolean") {
|
|
f = funct;
|
|
funct = functions[0];
|
|
addlabel(v, { type: "var" });
|
|
s = funct;
|
|
funct = f;
|
|
}
|
|
|
|
// The name is in scope and defined in the current function or it exists in the blockscope.
|
|
if (funct === s || block) {
|
|
// Change 'unused' to 'var', and reject labels.
|
|
// the name is in a block scope.
|
|
switch (block ? block[v]["(type)"] : funct[v]) {
|
|
case "unused":
|
|
if (block) block[v]["(type)"] = "var";
|
|
else funct[v] = "var";
|
|
break;
|
|
case "unction":
|
|
if (block) block[v]["(type)"] = "function";
|
|
else funct[v] = "function";
|
|
this["function"] = true;
|
|
break;
|
|
case "const":
|
|
// consts can only exist inside block
|
|
// because they are never added to the scope, s
|
|
block[v]["(unused)"] = false;
|
|
break;
|
|
case "function":
|
|
this["function"] = true;
|
|
break;
|
|
case "label":
|
|
warning("W037", state.tokens.curr, v);
|
|
break;
|
|
}
|
|
} else {
|
|
// If the name is already defined in the current
|
|
// function, but not as outer, then there is a scope error.
|
|
|
|
switch (funct[v]) {
|
|
case "closure":
|
|
case "function":
|
|
case "var":
|
|
case "unused":
|
|
warning("W038", state.tokens.curr, v);
|
|
break;
|
|
case "label":
|
|
warning("W037", state.tokens.curr, v);
|
|
break;
|
|
case "outer":
|
|
case "global":
|
|
break;
|
|
default:
|
|
// If the name is defined in an outer function, make an outer entry,
|
|
// and if it was unused, make it var.
|
|
if (s === true) {
|
|
funct[v] = true;
|
|
} else if (s === null) {
|
|
warning("W039", state.tokens.curr, v);
|
|
note_implied(state.tokens.curr);
|
|
} else if (typeof s !== "object") {
|
|
// if we're in a list comprehension, variables are declared
|
|
// locally and used before being defined. So we check
|
|
// the presence of the given variable in the comp array
|
|
// before declaring it undefined.
|
|
|
|
if (!funct["(comparray)"].check(v)) {
|
|
isundef(funct, "W117", state.tokens.curr, v);
|
|
}
|
|
|
|
// Explicitly mark the variable as used within function scopes
|
|
if (!funct["(global)"]) {
|
|
funct[v] = true;
|
|
}
|
|
|
|
note_implied(state.tokens.curr);
|
|
} else {
|
|
switch (s[v]) {
|
|
case "function":
|
|
case "unction":
|
|
this["function"] = true;
|
|
s[v] = "closure";
|
|
funct[v] = s["(global)"] ? "global" : "outer";
|
|
break;
|
|
case "var":
|
|
case "unused":
|
|
s[v] = "closure";
|
|
funct[v] = s["(global)"] ? "global" : "outer";
|
|
break;
|
|
case "closure":
|
|
funct[v] = s["(global)"] ? "global" : "outer";
|
|
break;
|
|
case "label":
|
|
warning("W037", state.tokens.curr, v);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
return this;
|
|
},
|
|
|
|
led: function() {
|
|
error("E033", state.tokens.next, state.tokens.next.value);
|
|
}
|
|
};
|
|
|
|
var baseTemplateSyntax = {
|
|
lbp: 0,
|
|
identifier: false,
|
|
template: true,
|
|
};
|
|
state.syntax["(template)"] = _.extend({
|
|
type: "(template)",
|
|
nud: doTemplateLiteral,
|
|
led: doTemplateLiteral,
|
|
noSubst: false
|
|
}, baseTemplateSyntax);
|
|
|
|
state.syntax["(template middle)"] = _.extend({
|
|
type: "(template middle)",
|
|
middle: true,
|
|
noSubst: false
|
|
}, baseTemplateSyntax);
|
|
|
|
state.syntax["(template tail)"] = _.extend({
|
|
type: "(template tail)",
|
|
tail: true,
|
|
noSubst: false
|
|
}, baseTemplateSyntax);
|
|
|
|
state.syntax["(no subst template)"] = _.extend({
|
|
type: "(template)",
|
|
nud: doTemplateLiteral,
|
|
led: doTemplateLiteral,
|
|
noSubst: true,
|
|
tail: true // mark as tail, since it's always the last component
|
|
}, baseTemplateSyntax);
|
|
|
|
type("(regexp)", function() {
|
|
return this;
|
|
});
|
|
|
|
// ECMAScript parser
|
|
|
|
delim("(endline)");
|
|
delim("(begin)");
|
|
delim("(end)").reach = true;
|
|
delim("(error)").reach = true;
|
|
delim("}").reach = true;
|
|
delim(")");
|
|
delim("]");
|
|
delim("\"").reach = true;
|
|
delim("'").reach = true;
|
|
delim(";");
|
|
delim(":").reach = true;
|
|
delim("#");
|
|
|
|
reserve("else");
|
|
reserve("case").reach = true;
|
|
reserve("catch");
|
|
reserve("default").reach = true;
|
|
reserve("finally");
|
|
reservevar("arguments", function(x) {
|
|
if (state.isStrict() && funct["(global)"]) {
|
|
warning("E008", x);
|
|
}
|
|
});
|
|
reservevar("eval");
|
|
reservevar("false");
|
|
reservevar("Infinity");
|
|
reservevar("null");
|
|
reservevar("this", function(x) {
|
|
if (state.isStrict() && !isMethod() &&
|
|
!state.option.validthis && ((funct["(statement)"] &&
|
|
funct["(name)"].charAt(0) > "Z") || funct["(global)"])) {
|
|
warning("W040", x);
|
|
}
|
|
});
|
|
reservevar("true");
|
|
reservevar("undefined");
|
|
|
|
assignop("=", "assign", 20);
|
|
assignop("+=", "assignadd", 20);
|
|
assignop("-=", "assignsub", 20);
|
|
assignop("*=", "assignmult", 20);
|
|
assignop("/=", "assigndiv", 20).nud = function() {
|
|
error("E014");
|
|
};
|
|
assignop("%=", "assignmod", 20);
|
|
|
|
bitwiseassignop("&=");
|
|
bitwiseassignop("|=");
|
|
bitwiseassignop("^=");
|
|
bitwiseassignop("<<=");
|
|
bitwiseassignop(">>=");
|
|
bitwiseassignop(">>>=");
|
|
infix(",", function(left, that) {
|
|
var expr;
|
|
that.exprs = [left];
|
|
|
|
if (state.option.nocomma) {
|
|
warning("W127");
|
|
}
|
|
|
|
if (!comma({ peek: true })) {
|
|
return that;
|
|
}
|
|
while (true) {
|
|
if (!(expr = expression(10))) {
|
|
break;
|
|
}
|
|
that.exprs.push(expr);
|
|
if (state.tokens.next.value !== "," || !comma()) {
|
|
break;
|
|
}
|
|
}
|
|
return that;
|
|
}, 10, true);
|
|
|
|
infix("?", function(left, that) {
|
|
increaseComplexityCount();
|
|
that.left = left;
|
|
that.right = expression(10);
|
|
advance(":");
|
|
that["else"] = expression(10);
|
|
return that;
|
|
}, 30);
|
|
|
|
var orPrecendence = 40;
|
|
infix("||", function(left, that) {
|
|
increaseComplexityCount();
|
|
that.left = left;
|
|
that.right = expression(orPrecendence);
|
|
return that;
|
|
}, orPrecendence);
|
|
infix("&&", "and", 50);
|
|
bitwise("|", "bitor", 70);
|
|
bitwise("^", "bitxor", 80);
|
|
bitwise("&", "bitand", 90);
|
|
relation("==", function(left, right) {
|
|
var eqnull = state.option.eqnull && (left.value === "null" || right.value === "null");
|
|
|
|
switch (true) {
|
|
case !eqnull && state.option.eqeqeq:
|
|
this.from = this.character;
|
|
warning("W116", this, "===", "==");
|
|
break;
|
|
case isPoorRelation(left):
|
|
warning("W041", this, "===", left.value);
|
|
break;
|
|
case isPoorRelation(right):
|
|
warning("W041", this, "===", right.value);
|
|
break;
|
|
case isTypoTypeof(right, left, state):
|
|
warning("W122", this, right.value);
|
|
break;
|
|
case isTypoTypeof(left, right, state):
|
|
warning("W122", this, left.value);
|
|
break;
|
|
}
|
|
|
|
return this;
|
|
});
|
|
relation("===", function(left, right) {
|
|
if (isTypoTypeof(right, left, state)) {
|
|
warning("W122", this, right.value);
|
|
} else if (isTypoTypeof(left, right, state)) {
|
|
warning("W122", this, left.value);
|
|
}
|
|
return this;
|
|
});
|
|
relation("!=", function(left, right) {
|
|
var eqnull = state.option.eqnull &&
|
|
(left.value === "null" || right.value === "null");
|
|
|
|
if (!eqnull && state.option.eqeqeq) {
|
|
this.from = this.character;
|
|
warning("W116", this, "!==", "!=");
|
|
} else if (isPoorRelation(left)) {
|
|
warning("W041", this, "!==", left.value);
|
|
} else if (isPoorRelation(right)) {
|
|
warning("W041", this, "!==", right.value);
|
|
} else if (isTypoTypeof(right, left, state)) {
|
|
warning("W122", this, right.value);
|
|
} else if (isTypoTypeof(left, right, state)) {
|
|
warning("W122", this, left.value);
|
|
}
|
|
return this;
|
|
});
|
|
relation("!==", function(left, right) {
|
|
if (isTypoTypeof(right, left, state)) {
|
|
warning("W122", this, right.value);
|
|
} else if (isTypoTypeof(left, right, state)) {
|
|
warning("W122", this, left.value);
|
|
}
|
|
return this;
|
|
});
|
|
relation("<");
|
|
relation(">");
|
|
relation("<=");
|
|
relation(">=");
|
|
bitwise("<<", "shiftleft", 120);
|
|
bitwise(">>", "shiftright", 120);
|
|
bitwise(">>>", "shiftrightunsigned", 120);
|
|
infix("in", "in", 120);
|
|
infix("instanceof", "instanceof", 120);
|
|
infix("+", function(left, that) {
|
|
var right;
|
|
that.left = left;
|
|
that.right = right = expression(130);
|
|
|
|
if (left && right && left.id === "(string)" && right.id === "(string)") {
|
|
left.value += right.value;
|
|
left.character = right.character;
|
|
if (!state.option.scripturl && reg.javascriptURL.test(left.value)) {
|
|
warning("W050", left);
|
|
}
|
|
return left;
|
|
}
|
|
|
|
return that;
|
|
}, 130);
|
|
prefix("+", "num");
|
|
prefix("+++", function() {
|
|
warning("W007");
|
|
this.arity = "unary";
|
|
this.right = expression(150);
|
|
return this;
|
|
});
|
|
infix("+++", function(left) {
|
|
warning("W007");
|
|
this.left = left;
|
|
this.right = expression(130);
|
|
return this;
|
|
}, 130);
|
|
infix("-", "sub", 130);
|
|
prefix("-", "neg");
|
|
prefix("---", function() {
|
|
warning("W006");
|
|
this.arity = "unary";
|
|
this.right = expression(150);
|
|
return this;
|
|
});
|
|
infix("---", function(left) {
|
|
warning("W006");
|
|
this.left = left;
|
|
this.right = expression(130);
|
|
return this;
|
|
}, 130);
|
|
infix("*", "mult", 140);
|
|
infix("/", "div", 140);
|
|
infix("%", "mod", 140);
|
|
|
|
suffix("++");
|
|
prefix("++", "preinc");
|
|
state.syntax["++"].exps = true;
|
|
|
|
suffix("--");
|
|
prefix("--", "predec");
|
|
state.syntax["--"].exps = true;
|
|
prefix("delete", function() {
|
|
var p = expression(10);
|
|
if (!p) {
|
|
return this;
|
|
}
|
|
|
|
if (p.id !== "." && p.id !== "[") {
|
|
warning("W051");
|
|
}
|
|
this.first = p;
|
|
|
|
// The `delete` operator accepts unresolvable references when not in strict
|
|
// mode, so the operand may be undefined.
|
|
if (p.identifier && !state.isStrict()) {
|
|
p.forgiveUndef = true;
|
|
}
|
|
return this;
|
|
}).exps = true;
|
|
|
|
prefix("~", function() {
|
|
if (state.option.bitwise) {
|
|
warning("W016", this, "~");
|
|
}
|
|
this.arity = "unary";
|
|
expression(150);
|
|
return this;
|
|
});
|
|
|
|
prefix("...", function() {
|
|
if (!state.option.esnext) {
|
|
warning("W119", this, "spread/rest operator");
|
|
}
|
|
|
|
// TODO: Allow all AssignmentExpression
|
|
// once parsing permits.
|
|
//
|
|
// How to handle eg. number, boolean when the built-in
|
|
// prototype of may have an @@iterator definition?
|
|
//
|
|
// Number.prototype[Symbol.iterator] = function * () {
|
|
// yield this.valueOf();
|
|
// };
|
|
//
|
|
// var a = [ ...1 ];
|
|
// console.log(a); // [1];
|
|
//
|
|
// for (let n of [...10]) {
|
|
// console.log(n);
|
|
// }
|
|
// // 10
|
|
//
|
|
//
|
|
// Boolean.prototype[Symbol.iterator] = function * () {
|
|
// yield this.valueOf();
|
|
// };
|
|
//
|
|
// var a = [ ...true ];
|
|
// console.log(a); // [true];
|
|
//
|
|
// for (let n of [...false]) {
|
|
// console.log(n);
|
|
// }
|
|
// // false
|
|
//
|
|
if (!state.tokens.next.identifier &&
|
|
state.tokens.next.type !== "(string)" &&
|
|
!checkPunctuators(state.tokens.next, ["[", "("])) {
|
|
|
|
error("E030", state.tokens.next, state.tokens.next.value);
|
|
}
|
|
expression(150);
|
|
return this;
|
|
});
|
|
|
|
prefix("!", function() {
|
|
this.arity = "unary";
|
|
this.right = expression(150);
|
|
|
|
if (!this.right) { // '!' followed by nothing? Give up.
|
|
quit("E041", this.line || 0);
|
|
}
|
|
|
|
if (bang[this.right.id] === true) {
|
|
warning("W018", this, "!");
|
|
}
|
|
return this;
|
|
});
|
|
|
|
prefix("typeof", (function() {
|
|
var p = expression(150);
|
|
this.first = p;
|
|
|
|
// The `typeof` operator accepts unresolvable references, so the operand
|
|
// may be undefined.
|
|
if (p.identifier) {
|
|
p.forgiveUndef = true;
|
|
}
|
|
return this;
|
|
}));
|
|
prefix("new", function() {
|
|
var c = expression(155), i;
|
|
if (c && c.id !== "function") {
|
|
if (c.identifier) {
|
|
c["new"] = true;
|
|
switch (c.value) {
|
|
case "Number":
|
|
case "String":
|
|
case "Boolean":
|
|
case "Math":
|
|
case "JSON":
|
|
warning("W053", state.tokens.prev, c.value);
|
|
break;
|
|
case "Symbol":
|
|
if (state.option.esnext) {
|
|
warning("W053", state.tokens.prev, c.value);
|
|
}
|
|
break;
|
|
case "Function":
|
|
if (!state.option.evil) {
|
|
warning("W054");
|
|
}
|
|
break;
|
|
case "Date":
|
|
case "RegExp":
|
|
case "this":
|
|
break;
|
|
default:
|
|
if (c.id !== "function") {
|
|
i = c.value.substr(0, 1);
|
|
if (state.option.newcap && (i < "A" || i > "Z") && !_.has(global, c.value)) {
|
|
warning("W055", state.tokens.curr);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
if (c.id !== "." && c.id !== "[" && c.id !== "(") {
|
|
warning("W056", state.tokens.curr);
|
|
}
|
|
}
|
|
} else {
|
|
if (!state.option.supernew)
|
|
warning("W057", this);
|
|
}
|
|
if (state.tokens.next.id !== "(" && !state.option.supernew) {
|
|
warning("W058", state.tokens.curr, state.tokens.curr.value);
|
|
}
|
|
this.first = c;
|
|
return this;
|
|
});
|
|
state.syntax["new"].exps = true;
|
|
|
|
prefix("void").exps = true;
|
|
|
|
infix(".", function(left, that) {
|
|
var m = identifier(false, true);
|
|
|
|
if (typeof m === "string") {
|
|
countMember(m);
|
|
}
|
|
|
|
that.left = left;
|
|
that.right = m;
|
|
|
|
if (m && m === "hasOwnProperty" && state.tokens.next.value === "=") {
|
|
warning("W001");
|
|
}
|
|
|
|
if (left && left.value === "arguments" && (m === "callee" || m === "caller")) {
|
|
if (state.option.noarg)
|
|
warning("W059", left, m);
|
|
else if (state.isStrict())
|
|
error("E008");
|
|
} else if (!state.option.evil && left && left.value === "document" &&
|
|
(m === "write" || m === "writeln")) {
|
|
warning("W060", left);
|
|
}
|
|
|
|
if (!state.option.evil && (m === "eval" || m === "execScript")) {
|
|
if (isGlobalEval(left, state, funct)) {
|
|
warning("W061");
|
|
}
|
|
}
|
|
|
|
return that;
|
|
}, 160, true);
|
|
|
|
infix("(", function(left, that) {
|
|
if (state.option.immed && left && !left.immed && left.id === "function") {
|
|
warning("W062");
|
|
}
|
|
|
|
var n = 0;
|
|
var p = [];
|
|
|
|
if (left) {
|
|
if (left.type === "(identifier)") {
|
|
if (left.value.match(/^[A-Z]([A-Z0-9_$]*[a-z][A-Za-z0-9_$]*)?$/)) {
|
|
if ("Number String Boolean Date Object Error Symbol".indexOf(left.value) === -1) {
|
|
if (left.value === "Math") {
|
|
warning("W063", left);
|
|
} else if (state.option.newcap) {
|
|
warning("W064", left);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (state.tokens.next.id !== ")") {
|
|
for (;;) {
|
|
p[p.length] = expression(10);
|
|
n += 1;
|
|
if (state.tokens.next.id !== ",") {
|
|
break;
|
|
}
|
|
comma();
|
|
}
|
|
}
|
|
|
|
advance(")");
|
|
|
|
if (typeof left === "object") {
|
|
if (state.inES3() && left.value === "parseInt" && n === 1) {
|
|
warning("W065", state.tokens.curr);
|
|
}
|
|
if (!state.option.evil) {
|
|
if (left.value === "eval" || left.value === "Function" ||
|
|
left.value === "execScript") {
|
|
warning("W061", left);
|
|
|
|
if (p[0] && [0].id === "(string)") {
|
|
addInternalSrc(left, p[0].value);
|
|
}
|
|
} else if (p[0] && p[0].id === "(string)" &&
|
|
(left.value === "setTimeout" ||
|
|
left.value === "setInterval")) {
|
|
warning("W066", left);
|
|
addInternalSrc(left, p[0].value);
|
|
|
|
// window.setTimeout/setInterval
|
|
} else if (p[0] && p[0].id === "(string)" &&
|
|
left.value === "." &&
|
|
left.left.value === "window" &&
|
|
(left.right === "setTimeout" ||
|
|
left.right === "setInterval")) {
|
|
warning("W066", left);
|
|
addInternalSrc(left, p[0].value);
|
|
}
|
|
}
|
|
if (!left.identifier && left.id !== "." && left.id !== "[" &&
|
|
left.id !== "(" && left.id !== "&&" && left.id !== "||" &&
|
|
left.id !== "?" && !(state.option.esnext && left["(name)"])) {
|
|
warning("W067", that);
|
|
}
|
|
}
|
|
|
|
that.left = left;
|
|
return that;
|
|
}, 155, true).exps = true;
|
|
|
|
prefix("(", function() {
|
|
var pn = state.tokens.next, pn1, i = -1;
|
|
var ret, triggerFnExpr, first, last;
|
|
var parens = 1;
|
|
var opening = state.tokens.curr;
|
|
var preceeding = state.tokens.prev;
|
|
var isNecessary = !state.option.singleGroups;
|
|
|
|
do {
|
|
if (pn.value === "(") {
|
|
parens += 1;
|
|
} else if (pn.value === ")") {
|
|
parens -= 1;
|
|
}
|
|
|
|
i += 1;
|
|
pn1 = pn;
|
|
pn = peek(i);
|
|
} while (!(parens === 0 && pn1.value === ")") && pn.value !== ";" && pn.type !== "(end)");
|
|
|
|
if (state.tokens.next.id === "function") {
|
|
triggerFnExpr = state.tokens.next.immed = true;
|
|
}
|
|
|
|
// If the balanced grouping operator is followed by a "fat arrow", the
|
|
// current token marks the beginning of a "fat arrow" function and parsing
|
|
// should proceed accordingly.
|
|
if (pn.value === "=>") {
|
|
return doFunction({ type: "arrow", parsedOpening: true });
|
|
}
|
|
|
|
var exprs = [];
|
|
|
|
if (state.tokens.next.id !== ")") {
|
|
for (;;) {
|
|
exprs.push(expression(10));
|
|
|
|
if (state.tokens.next.id !== ",") {
|
|
break;
|
|
}
|
|
|
|
if (state.option.nocomma) {
|
|
warning("W127");
|
|
}
|
|
|
|
comma();
|
|
}
|
|
}
|
|
|
|
advance(")", this);
|
|
if (state.option.immed && exprs[0] && exprs[0].id === "function") {
|
|
if (state.tokens.next.id !== "(" &&
|
|
state.tokens.next.id !== "." && state.tokens.next.id !== "[") {
|
|
warning("W068", this);
|
|
}
|
|
}
|
|
|
|
if (!exprs.length) {
|
|
return;
|
|
}
|
|
if (exprs.length > 1) {
|
|
ret = Object.create(state.syntax[","]);
|
|
ret.exprs = exprs;
|
|
|
|
first = exprs[0];
|
|
last = exprs[exprs.length - 1];
|
|
|
|
if (!isNecessary) {
|
|
isNecessary = preceeding.assign || preceeding.delim;
|
|
}
|
|
} else {
|
|
ret = first = last = exprs[0];
|
|
|
|
if (!isNecessary) {
|
|
isNecessary =
|
|
// Used to distinguish from an ExpressionStatement which may not
|
|
// begin with the `{` and `function` tokens
|
|
(opening.beginsStmt && (ret.id === "{" || triggerFnExpr || isFunctor(ret))) ||
|
|
// Used to signal that a function expression is being supplied to
|
|
// some other operator.
|
|
(triggerFnExpr &&
|
|
// For parenthesis wrapping a function expression to be considered
|
|
// necessary, the grouping operator should be the left-hand-side of
|
|
// some other operator--either within the parenthesis or directly
|
|
// following them.
|
|
(!isEndOfExpr() || state.tokens.prev.id !== "}")) ||
|
|
// Used to demarcate an arrow function as the left-hand side of some
|
|
// operator.
|
|
(isFunctor(ret) && !isEndOfExpr()) ||
|
|
// Used as the return value of a single-statement arrow function
|
|
(ret.id === "{" && preceeding.id === "=>");
|
|
}
|
|
}
|
|
|
|
if (ret) {
|
|
// The operator may be necessary to override the default binding power of
|
|
// neighboring operators (whenever there is an operator in use within the
|
|
// first expression *or* the current group contains multiple expressions)
|
|
if (!isNecessary && (first.left || ret.exprs)) {
|
|
isNecessary =
|
|
(!isBeginOfExpr(preceeding) && first.lbp <= preceeding.lbp) ||
|
|
(!isEndOfExpr() && last.lbp < state.tokens.next.lbp);
|
|
}
|
|
|
|
if (!isNecessary) {
|
|
warning("W126", opening);
|
|
}
|
|
|
|
ret.paren = true;
|
|
}
|
|
|
|
return ret;
|
|
});
|
|
|
|
application("=>");
|
|
|
|
infix("[", function(left, that) {
|
|
var e = expression(10), s;
|
|
if (e && e.type === "(string)") {
|
|
if (!state.option.evil && (e.value === "eval" || e.value === "execScript")) {
|
|
if (isGlobalEval(left, state, funct)) {
|
|
warning("W061");
|
|
}
|
|
}
|
|
|
|
countMember(e.value);
|
|
if (!state.option.sub && reg.identifier.test(e.value)) {
|
|
s = state.syntax[e.value];
|
|
if (!s || !isReserved(s)) {
|
|
warning("W069", state.tokens.prev, e.value);
|
|
}
|
|
}
|
|
}
|
|
advance("]", that);
|
|
|
|
if (e && e.value === "hasOwnProperty" && state.tokens.next.value === "=") {
|
|
warning("W001");
|
|
}
|
|
|
|
that.left = left;
|
|
that.right = e;
|
|
return that;
|
|
}, 160, true);
|
|
|
|
function comprehensiveArrayExpression() {
|
|
var res = {};
|
|
res.exps = true;
|
|
funct["(comparray)"].stack();
|
|
|
|
// Handle reversed for expressions, used in spidermonkey
|
|
var reversed = false;
|
|
if (state.tokens.next.value !== "for") {
|
|
reversed = true;
|
|
if (!state.inMoz()) {
|
|
warning("W116", state.tokens.next, "for", state.tokens.next.value);
|
|
}
|
|
funct["(comparray)"].setState("use");
|
|
res.right = expression(10);
|
|
}
|
|
|
|
advance("for");
|
|
if (state.tokens.next.value === "each") {
|
|
advance("each");
|
|
if (!state.inMoz()) {
|
|
warning("W118", state.tokens.curr, "for each");
|
|
}
|
|
}
|
|
advance("(");
|
|
funct["(comparray)"].setState("define");
|
|
res.left = expression(130);
|
|
if (_.contains(["in", "of"], state.tokens.next.value)) {
|
|
advance();
|
|
} else {
|
|
error("E045", state.tokens.curr);
|
|
}
|
|
funct["(comparray)"].setState("generate");
|
|
expression(10);
|
|
|
|
advance(")");
|
|
if (state.tokens.next.value === "if") {
|
|
advance("if");
|
|
advance("(");
|
|
funct["(comparray)"].setState("filter");
|
|
res.filter = expression(10);
|
|
advance(")");
|
|
}
|
|
|
|
if (!reversed) {
|
|
funct["(comparray)"].setState("use");
|
|
res.right = expression(10);
|
|
}
|
|
|
|
advance("]");
|
|
funct["(comparray)"].unstack();
|
|
return res;
|
|
}
|
|
|
|
prefix("[", function() {
|
|
var blocktype = lookupBlockType();
|
|
if (blocktype.isCompArray) {
|
|
if (!state.inESNext()) {
|
|
warning("W119", state.tokens.curr, "array comprehension");
|
|
}
|
|
return comprehensiveArrayExpression();
|
|
} else if (blocktype.isDestAssign && !state.inESNext()) {
|
|
warning("W104", state.tokens.curr, "destructuring assignment");
|
|
}
|
|
var b = state.tokens.curr.line !== startLine(state.tokens.next);
|
|
this.first = [];
|
|
if (b) {
|
|
indent += state.option.indent;
|
|
if (state.tokens.next.from === indent + state.option.indent) {
|
|
indent += state.option.indent;
|
|
}
|
|
}
|
|
while (state.tokens.next.id !== "(end)") {
|
|
while (state.tokens.next.id === ",") {
|
|
if (!state.option.elision) {
|
|
if (!state.inES5()) {
|
|
// Maintain compat with old options --- ES5 mode without
|
|
// elision=true will warn once per comma
|
|
warning("W070");
|
|
} else {
|
|
warning("W128");
|
|
do {
|
|
advance(",");
|
|
} while (state.tokens.next.id === ",");
|
|
continue;
|
|
}
|
|
}
|
|
advance(",");
|
|
}
|
|
|
|
if (state.tokens.next.id === "]") {
|
|
break;
|
|
}
|
|
|
|
this.first.push(expression(10));
|
|
if (state.tokens.next.id === ",") {
|
|
comma({ allowTrailing: true });
|
|
if (state.tokens.next.id === "]" && !state.inES5(true)) {
|
|
warning("W070", state.tokens.curr);
|
|
break;
|
|
}
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
if (b) {
|
|
indent -= state.option.indent;
|
|
}
|
|
advance("]", this);
|
|
return this;
|
|
});
|
|
|
|
|
|
function isMethod() {
|
|
return funct["(statement)"] && funct["(statement)"].type === "class" ||
|
|
funct["(context)"] && funct["(context)"]["(verb)"] === "class";
|
|
}
|
|
|
|
|
|
function isPropertyName(token) {
|
|
return token.identifier || token.id === "(string)" || token.id === "(number)";
|
|
}
|
|
|
|
|
|
function propertyName(preserveOrToken) {
|
|
var id;
|
|
var preserve = true;
|
|
if (typeof preserveOrToken === "object") {
|
|
id = preserveOrToken;
|
|
} else {
|
|
preserve = preserveOrToken;
|
|
id = optionalidentifier(false, true, preserve);
|
|
}
|
|
|
|
if (!id) {
|
|
if (state.tokens.next.id === "(string)") {
|
|
id = state.tokens.next.value;
|
|
if (!preserve) {
|
|
advance();
|
|
}
|
|
} else if (state.tokens.next.id === "(number)") {
|
|
id = state.tokens.next.value.toString();
|
|
if (!preserve) {
|
|
advance();
|
|
}
|
|
}
|
|
} else if (typeof id === "object") {
|
|
if (id.id === "(string)" || id.id === "(identifier)") id = id.value;
|
|
else if (id.id === "(number)") id = id.value.toString();
|
|
}
|
|
|
|
if (id === "hasOwnProperty") {
|
|
warning("W001");
|
|
}
|
|
|
|
return id;
|
|
}
|
|
|
|
/**
|
|
* @param {Object} [options]
|
|
* @param {token} [options.loneArg] The argument to the function in cases
|
|
* where it was defined using the
|
|
* single-argument shorthand.
|
|
* @param {bool} [options.parsedOpening] Whether the opening parenthesis has
|
|
* already been parsed.
|
|
*/
|
|
function functionparams(options) {
|
|
var next;
|
|
var params = [];
|
|
var ident;
|
|
var tokens = [];
|
|
var t;
|
|
var pastDefault = false;
|
|
var pastRest = false;
|
|
var loneArg = options && options.loneArg;
|
|
|
|
if (loneArg && loneArg.identifier === true) {
|
|
addlabel(loneArg.value, { type: "unused", token: loneArg });
|
|
return [loneArg.value];
|
|
}
|
|
|
|
next = state.tokens.next;
|
|
|
|
if (!options || !options.parsedOpening) {
|
|
advance("(");
|
|
}
|
|
|
|
if (state.tokens.next.id === ")") {
|
|
advance(")");
|
|
return;
|
|
}
|
|
|
|
for (;;) {
|
|
if (_.contains(["{", "["], state.tokens.next.id)) {
|
|
tokens = destructuringExpression();
|
|
for (t in tokens) {
|
|
t = tokens[t];
|
|
if (t.id) {
|
|
params.push(t.id);
|
|
addlabel(t.id, { type: "unused", token: t.token });
|
|
}
|
|
}
|
|
} else {
|
|
if (checkPunctuators(state.tokens.next, ["..."])) pastRest = true;
|
|
ident = identifier(true);
|
|
if (ident) {
|
|
params.push(ident);
|
|
addlabel(ident, { type: "unused", token: state.tokens.curr });
|
|
} else {
|
|
// Skip invalid parameter.
|
|
while (!checkPunctuators(state.tokens.next, [",", ")"])) advance();
|
|
}
|
|
}
|
|
|
|
// it is a syntax error to have a regular argument after a default argument
|
|
if (pastDefault) {
|
|
if (state.tokens.next.id !== "=") {
|
|
error("E051", state.tokens.current);
|
|
}
|
|
}
|
|
if (state.tokens.next.id === "=") {
|
|
if (!state.inESNext()) {
|
|
warning("W119", state.tokens.next, "default parameters");
|
|
}
|
|
advance("=");
|
|
pastDefault = true;
|
|
expression(10);
|
|
}
|
|
if (state.tokens.next.id === ",") {
|
|
if (pastRest) {
|
|
warning("W131", state.tokens.next);
|
|
}
|
|
comma();
|
|
} else {
|
|
advance(")", next);
|
|
return params;
|
|
}
|
|
}
|
|
}
|
|
|
|
function functor(name, token, scope, overwrites) {
|
|
var funct = {
|
|
"(name)" : name,
|
|
"(breakage)" : 0,
|
|
"(loopage)" : 0,
|
|
"(scope)" : scope,
|
|
"(tokens)" : {},
|
|
"(properties)": {},
|
|
|
|
"(catch)" : false,
|
|
"(global)" : false,
|
|
|
|
"(line)" : null,
|
|
"(character)" : null,
|
|
"(metrics)" : null,
|
|
"(statement)" : null,
|
|
"(context)" : null,
|
|
"(blockscope)": null,
|
|
"(comparray)" : null,
|
|
"(generator)" : null,
|
|
"(params)" : null
|
|
};
|
|
|
|
if (token) {
|
|
_.extend(funct, {
|
|
"(line)" : token.line,
|
|
"(character)": token.character,
|
|
"(metrics)" : createMetrics(token)
|
|
});
|
|
}
|
|
|
|
_.extend(funct, overwrites);
|
|
|
|
if (funct["(context)"]) {
|
|
funct["(blockscope)"] = funct["(context)"]["(blockscope)"];
|
|
funct["(comparray)"] = funct["(context)"]["(comparray)"];
|
|
}
|
|
|
|
return funct;
|
|
}
|
|
|
|
function isFunctor(token) {
|
|
return "(scope)" in token;
|
|
}
|
|
|
|
/**
|
|
* Determine if the parser has begun parsing executable code.
|
|
*
|
|
* @param {Token} funct - The current "functor" token
|
|
*
|
|
* @returns {boolean}
|
|
*/
|
|
function hasParsedCode(funct) {
|
|
return funct["(global)"] && !funct["(verb)"];
|
|
}
|
|
|
|
function doTemplateLiteral(left) {
|
|
// ASSERT: this.type === "(template)"
|
|
// jshint validthis: true
|
|
var ctx = this.context;
|
|
var noSubst = this.noSubst;
|
|
var depth = this.depth;
|
|
|
|
if (!noSubst) {
|
|
while (!end()) {
|
|
if (!state.tokens.next.template || state.tokens.next.depth > depth) {
|
|
expression(0); // should probably have different rbp?
|
|
} else {
|
|
// skip template start / middle
|
|
advance();
|
|
}
|
|
}
|
|
}
|
|
|
|
return {
|
|
id: "(template)",
|
|
type: "(template)",
|
|
tag: left
|
|
};
|
|
|
|
function end() {
|
|
if (state.tokens.curr.template && state.tokens.curr.tail &&
|
|
state.tokens.curr.context === ctx) return true;
|
|
var complete = (state.tokens.next.template && state.tokens.next.tail &&
|
|
state.tokens.next.context === ctx);
|
|
if (complete) advance();
|
|
return complete || state.tokens.next.isUnclosed;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {Object} [options]
|
|
* @param {token} [options.name] The identifier belonging to the function (if
|
|
* any)
|
|
* @param {boolean} [options.statement] The statement that triggered creation
|
|
* of the current function.
|
|
* @param {string} [options.type] If specified, either "generator" or "arrow"
|
|
* @param {token} [options.loneArg] The argument to the function in cases
|
|
* where it was defined using the
|
|
* single-argument shorthand
|
|
* @param {bool} [options.parsedOpening] Whether the opening parenthesis has
|
|
* already been parsed
|
|
* @param {token} [options.classExprBinding] Define a function with this
|
|
* identifier in the new function's
|
|
* scope, mimicking the bahavior of
|
|
* class expression names within
|
|
* the body of member functions.
|
|
*/
|
|
function doFunction(options) {
|
|
var f, name, statement, classExprBinding, isGenerator, isArrow;
|
|
var oldOption = state.option;
|
|
var oldIgnored = state.ignored;
|
|
var oldScope = scope;
|
|
|
|
if (options) {
|
|
name = options.name;
|
|
statement = options.statement;
|
|
classExprBinding = options.classExprBinding;
|
|
isGenerator = options.type === "generator";
|
|
isArrow = options.type === "arrow";
|
|
}
|
|
|
|
state.option = Object.create(state.option);
|
|
state.ignored = Object.create(state.ignored);
|
|
scope = Object.create(scope);
|
|
|
|
funct = functor(name || state.nameStack.infer(), state.tokens.next, scope, {
|
|
"(statement)": statement,
|
|
"(context)": funct,
|
|
"(generator)": isGenerator
|
|
});
|
|
|
|
f = funct;
|
|
state.tokens.curr.funct = funct;
|
|
|
|
functions.push(funct);
|
|
|
|
if (name) {
|
|
addlabel(name, { type: "function" });
|
|
}
|
|
|
|
if (classExprBinding) {
|
|
addlabel(classExprBinding, { type: "function" });
|
|
}
|
|
|
|
funct["(params)"] = functionparams(options);
|
|
funct["(metrics)"].verifyMaxParametersPerFunction(funct["(params)"]);
|
|
|
|
if (isArrow) {
|
|
if (!state.option.esnext) {
|
|
warning("W119", state.tokens.curr, "arrow function syntax (=>)");
|
|
}
|
|
|
|
if (!options.loneArg) {
|
|
advance("=>");
|
|
}
|
|
}
|
|
|
|
block(false, true, true, isArrow);
|
|
|
|
if (!state.option.noyield && isGenerator &&
|
|
funct["(generator)"] !== "yielded") {
|
|
warning("W124", state.tokens.curr);
|
|
}
|
|
|
|
funct["(metrics)"].verifyMaxStatementsPerFunction();
|
|
funct["(metrics)"].verifyMaxComplexityPerFunction();
|
|
funct["(unusedOption)"] = state.option.unused;
|
|
|
|
scope = oldScope;
|
|
state.option = oldOption;
|
|
state.ignored = oldIgnored;
|
|
funct["(last)"] = state.tokens.curr.line;
|
|
funct["(lastcharacter)"] = state.tokens.curr.character;
|
|
|
|
_.map(Object.keys(funct), function(key) {
|
|
if (key[0] === "(") return;
|
|
funct["(blockscope)"].unshadow(key);
|
|
});
|
|
|
|
funct = funct["(context)"];
|
|
|
|
return f;
|
|
}
|
|
|
|
function createMetrics(functionStartToken) {
|
|
return {
|
|
statementCount: 0,
|
|
nestedBlockDepth: -1,
|
|
ComplexityCount: 1,
|
|
|
|
verifyMaxStatementsPerFunction: function() {
|
|
if (state.option.maxstatements &&
|
|
this.statementCount > state.option.maxstatements) {
|
|
warning("W071", functionStartToken, this.statementCount);
|
|
}
|
|
},
|
|
|
|
verifyMaxParametersPerFunction: function(params) {
|
|
params = params || [];
|
|
|
|
if (_.isNumber(state.option.maxparams) && params.length > state.option.maxparams) {
|
|
warning("W072", functionStartToken, params.length);
|
|
}
|
|
},
|
|
|
|
verifyMaxNestedBlockDepthPerFunction: function() {
|
|
if (state.option.maxdepth &&
|
|
this.nestedBlockDepth > 0 &&
|
|
this.nestedBlockDepth === state.option.maxdepth + 1) {
|
|
warning("W073", null, this.nestedBlockDepth);
|
|
}
|
|
},
|
|
|
|
verifyMaxComplexityPerFunction: function() {
|
|
var max = state.option.maxcomplexity;
|
|
var cc = this.ComplexityCount;
|
|
if (max && cc > max) {
|
|
warning("W074", functionStartToken, cc);
|
|
}
|
|
}
|
|
};
|
|
}
|
|
|
|
function increaseComplexityCount() {
|
|
funct["(metrics)"].ComplexityCount += 1;
|
|
}
|
|
|
|
// Parse assignments that were found instead of conditionals.
|
|
// For example: if (a = 1) { ... }
|
|
|
|
function checkCondAssignment(expr) {
|
|
var id, paren;
|
|
if (expr) {
|
|
id = expr.id;
|
|
paren = expr.paren;
|
|
if (id === "," && (expr = expr.exprs[expr.exprs.length - 1])) {
|
|
id = expr.id;
|
|
paren = paren || expr.paren;
|
|
}
|
|
}
|
|
switch (id) {
|
|
case "=":
|
|
case "+=":
|
|
case "-=":
|
|
case "*=":
|
|
case "%=":
|
|
case "&=":
|
|
case "|=":
|
|
case "^=":
|
|
case "/=":
|
|
if (!paren && !state.option.boss) {
|
|
warning("W084");
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param {object} props Collection of property descriptors for a given
|
|
* object.
|
|
*/
|
|
function checkProperties(props) {
|
|
// Check for lonely setters if in the ES5 mode.
|
|
if (state.inES5()) {
|
|
for (var name in props) {
|
|
if (_.has(props, name) && props[name].setterToken && !props[name].getterToken) {
|
|
warning("W078", props[name].setterToken);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
(function(x) {
|
|
x.nud = function() {
|
|
var b, f, i, p, t, isGeneratorMethod = false, nextVal;
|
|
var props = {}; // All properties, including accessors
|
|
|
|
b = state.tokens.curr.line !== startLine(state.tokens.next);
|
|
if (b) {
|
|
indent += state.option.indent;
|
|
if (state.tokens.next.from === indent + state.option.indent) {
|
|
indent += state.option.indent;
|
|
}
|
|
}
|
|
|
|
for (;;) {
|
|
if (state.tokens.next.id === "}") {
|
|
break;
|
|
}
|
|
|
|
nextVal = state.tokens.next.value;
|
|
if (state.tokens.next.identifier &&
|
|
(peekIgnoreEOL().id === "," || peekIgnoreEOL().id === "}")) {
|
|
if (!state.inESNext()) {
|
|
warning("W104", state.tokens.next, "object short notation");
|
|
}
|
|
i = propertyName(true);
|
|
saveProperty(props, i, state.tokens.next);
|
|
|
|
expression(10);
|
|
|
|
} else if (peek().id !== ":" && (nextVal === "get" || nextVal === "set")) {
|
|
advance(nextVal);
|
|
|
|
if (!state.inES5()) {
|
|
error("E034");
|
|
}
|
|
|
|
i = propertyName();
|
|
|
|
// ES6 allows for get() {...} and set() {...} method
|
|
// definition shorthand syntax, so we don't produce an error
|
|
// if the esnext option is enabled.
|
|
if (!i && !state.inESNext()) {
|
|
error("E035");
|
|
}
|
|
|
|
// We don't want to save this getter unless it's an actual getter
|
|
// and not an ES6 concise method
|
|
if (i) {
|
|
saveAccessor(nextVal, props, i, state.tokens.curr);
|
|
}
|
|
|
|
t = state.tokens.next;
|
|
f = doFunction();
|
|
p = f["(params)"];
|
|
|
|
// Don't warn about getter/setter pairs if this is an ES6 concise method
|
|
if (nextVal === "get" && i && p) {
|
|
warning("W076", t, p[0], i);
|
|
} else if (nextVal === "set" && i && (!p || p.length !== 1)) {
|
|
warning("W077", t, i);
|
|
}
|
|
} else {
|
|
if (state.tokens.next.value === "*" && state.tokens.next.type === "(punctuator)") {
|
|
if (!state.inESNext()) {
|
|
warning("W104", state.tokens.next, "generator functions");
|
|
}
|
|
advance("*");
|
|
isGeneratorMethod = true;
|
|
} else {
|
|
isGeneratorMethod = false;
|
|
}
|
|
|
|
if (state.tokens.next.id === "[") {
|
|
i = computedPropertyName();
|
|
state.nameStack.set(i);
|
|
} else {
|
|
state.nameStack.set(state.tokens.next);
|
|
i = propertyName();
|
|
saveProperty(props, i, state.tokens.next);
|
|
|
|
if (typeof i !== "string") {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (state.tokens.next.value === "(") {
|
|
if (!state.inESNext()) {
|
|
warning("W104", state.tokens.curr, "concise methods");
|
|
}
|
|
doFunction({ type: isGeneratorMethod ? "generator" : null });
|
|
} else {
|
|
advance(":");
|
|
expression(10);
|
|
}
|
|
}
|
|
|
|
countMember(i);
|
|
|
|
if (state.tokens.next.id === ",") {
|
|
comma({ allowTrailing: true, property: true });
|
|
if (state.tokens.next.id === ",") {
|
|
warning("W070", state.tokens.curr);
|
|
} else if (state.tokens.next.id === "}" && !state.inES5(true)) {
|
|
warning("W070", state.tokens.curr);
|
|
}
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
if (b) {
|
|
indent -= state.option.indent;
|
|
}
|
|
advance("}", this);
|
|
|
|
checkProperties(props);
|
|
|
|
return this;
|
|
};
|
|
x.fud = function() {
|
|
error("E036", state.tokens.curr);
|
|
};
|
|
}(delim("{")));
|
|
|
|
function destructuringExpression() {
|
|
var id, ids;
|
|
var identifiers = [];
|
|
if (!state.inESNext()) {
|
|
warning("W104", state.tokens.curr, "destructuring expression");
|
|
}
|
|
var nextInnerDE = function() {
|
|
var ident;
|
|
if (checkPunctuators(state.tokens.next, ["[", "{"])) {
|
|
ids = destructuringExpression();
|
|
for (var id in ids) {
|
|
id = ids[id];
|
|
identifiers.push({ id: id.id, token: id.token });
|
|
}
|
|
} else if (checkPunctuators(state.tokens.next, [","])) {
|
|
identifiers.push({ id: null, token: state.tokens.curr });
|
|
} else if (checkPunctuators(state.tokens.next, ["("])) {
|
|
advance("(");
|
|
nextInnerDE();
|
|
advance(")");
|
|
} else {
|
|
var is_rest = checkPunctuators(state.tokens.next, ["..."]);
|
|
ident = identifier();
|
|
if (ident)
|
|
identifiers.push({ id: ident, token: state.tokens.curr });
|
|
return is_rest;
|
|
}
|
|
return false;
|
|
};
|
|
if (checkPunctuators(state.tokens.next, ["["])) {
|
|
advance("[");
|
|
var element_after_rest = false;
|
|
if (nextInnerDE() && checkPunctuators(state.tokens.next, [","]) &&
|
|
!element_after_rest) {
|
|
warning("W130", state.tokens.next);
|
|
element_after_rest = true;
|
|
}
|
|
while (!checkPunctuators(state.tokens.next, ["]"])) {
|
|
advance(",");
|
|
if (checkPunctuators(state.tokens.next, ["]"])) {
|
|
// Trailing comma
|
|
break;
|
|
}
|
|
if (nextInnerDE() && checkPunctuators(state.tokens.next, [","]) &&
|
|
!element_after_rest) {
|
|
warning("W130", state.tokens.next);
|
|
element_after_rest = true;
|
|
}
|
|
}
|
|
advance("]");
|
|
} else if (checkPunctuators(state.tokens.next, ["{"])) {
|
|
advance("{");
|
|
id = identifier();
|
|
if (checkPunctuators(state.tokens.next, [":"])) {
|
|
advance(":");
|
|
nextInnerDE();
|
|
} else {
|
|
identifiers.push({ id: id, token: state.tokens.curr });
|
|
}
|
|
while (!checkPunctuators(state.tokens.next, ["}"])) {
|
|
advance(",");
|
|
if (checkPunctuators(state.tokens.next, ["}"])) {
|
|
// Trailing comma
|
|
// ObjectBindingPattern: { BindingPropertyList , }
|
|
break;
|
|
}
|
|
id = identifier();
|
|
if (checkPunctuators(state.tokens.next, [":"])) {
|
|
advance(":");
|
|
nextInnerDE();
|
|
} else {
|
|
identifiers.push({ id: id, token: state.tokens.curr });
|
|
}
|
|
}
|
|
advance("}");
|
|
}
|
|
return identifiers;
|
|
}
|
|
|
|
function destructuringExpressionMatch(tokens, value) {
|
|
var first = value.first;
|
|
|
|
if (!first)
|
|
return;
|
|
|
|
_.zip(tokens, Array.isArray(first) ? first : [ first ]).forEach(function(val) {
|
|
var token = val[0];
|
|
var value = val[1];
|
|
|
|
if (token && value)
|
|
token.first = value;
|
|
else if (token && token.first && !value)
|
|
warning("W080", token.first, token.first.value);
|
|
});
|
|
}
|
|
|
|
function blockVariableStatement(type, statement, context) {
|
|
// used for both let and const statements
|
|
|
|
var prefix = context && context.prefix;
|
|
var inexport = context && context.inexport;
|
|
var isLet = type === "let";
|
|
var isConst = type === "const";
|
|
var tokens, lone, value, letblock;
|
|
|
|
if (!state.inESNext()) {
|
|
warning("W104", state.tokens.curr, type);
|
|
}
|
|
|
|
if (isLet && state.tokens.next.value === "(") {
|
|
if (!state.inMoz()) {
|
|
warning("W118", state.tokens.next, "let block");
|
|
}
|
|
advance("(");
|
|
funct["(blockscope)"].stack();
|
|
letblock = true;
|
|
} else if (funct["(noblockscopedvar)"]) {
|
|
error("E048", state.tokens.curr, isConst ? "Const" : "Let");
|
|
}
|
|
|
|
statement.first = [];
|
|
for (;;) {
|
|
var names = [];
|
|
if (_.contains(["{", "["], state.tokens.next.value)) {
|
|
tokens = destructuringExpression();
|
|
lone = false;
|
|
} else {
|
|
tokens = [ { id: identifier(), token: state.tokens.curr } ];
|
|
lone = true;
|
|
if (inexport) {
|
|
exported[state.tokens.curr.value] = true;
|
|
state.tokens.curr.exported = true;
|
|
}
|
|
}
|
|
for (var t in tokens) {
|
|
if (tokens.hasOwnProperty(t)) {
|
|
t = tokens[t];
|
|
if (state.inESNext()) {
|
|
// only look in the latest scope because we can shadow
|
|
if (funct["(blockscope)"].current.labeltype(t.id) === "const") {
|
|
warning("E011", null, t.id);
|
|
}
|
|
}
|
|
if (funct["(global)"]) {
|
|
if (predefined[t.id] === false) {
|
|
warning("W079", t.token, t.id);
|
|
}
|
|
}
|
|
if (t.id && !funct["(noblockscopedvar)"]) {
|
|
addlabel(t.id, {
|
|
type: isConst ? "const" : "unused",
|
|
token: t.token,
|
|
isblockscoped: true });
|
|
names.push(t.token);
|
|
}
|
|
}
|
|
}
|
|
|
|
statement.first = statement.first.concat(names);
|
|
|
|
if (!prefix && isConst && state.tokens.next.id !== "=") {
|
|
warning("E012", state.tokens.curr, state.tokens.curr.value);
|
|
}
|
|
|
|
if (state.tokens.next.id === "=") {
|
|
advance("=");
|
|
if (!prefix && state.tokens.next.id === "undefined") {
|
|
warning("W080", state.tokens.prev, state.tokens.prev.value);
|
|
}
|
|
if (!prefix && peek(0).id === "=" && state.tokens.next.identifier) {
|
|
warning("W120", state.tokens.next, state.tokens.next.value);
|
|
}
|
|
// don't accept `in` in expression if prefix is used for ForIn/Of loop.
|
|
value = expression(prefix ? 120 : 10);
|
|
if (lone) {
|
|
tokens[0].first = value;
|
|
} else {
|
|
destructuringExpressionMatch(names, value);
|
|
}
|
|
}
|
|
|
|
if (state.tokens.next.id !== ",") {
|
|
break;
|
|
}
|
|
comma();
|
|
}
|
|
if (letblock) {
|
|
advance(")");
|
|
block(true, true);
|
|
statement.block = true;
|
|
funct["(blockscope)"].unstack();
|
|
}
|
|
|
|
return statement;
|
|
}
|
|
|
|
var conststatement = stmt("const", function(context) {
|
|
return blockVariableStatement("const", this, context);
|
|
});
|
|
conststatement.exps = true;
|
|
|
|
var letstatement = stmt("let", function(context) {
|
|
return blockVariableStatement("let", this, context);
|
|
});
|
|
letstatement.exps = true;
|
|
|
|
var varstatement = stmt("var", function(context) {
|
|
var prefix = context && context.prefix;
|
|
var inexport = context && context.inexport;
|
|
var tokens, lone, value;
|
|
|
|
// If the `implied` option is set, bindings are set differently.
|
|
var implied = context && context.implied;
|
|
var report = !(context && context.ignore);
|
|
|
|
this.first = [];
|
|
for (;;) {
|
|
var names = [];
|
|
if (_.contains(["{", "["], state.tokens.next.value)) {
|
|
tokens = destructuringExpression();
|
|
lone = false;
|
|
} else {
|
|
tokens = [ { id: identifier(), token: state.tokens.curr } ];
|
|
lone = true;
|
|
if (inexport) {
|
|
exported[state.tokens.curr.value] = true;
|
|
state.tokens.curr.exported = true;
|
|
}
|
|
}
|
|
for (var t in tokens) {
|
|
if (tokens.hasOwnProperty(t)) {
|
|
t = tokens[t];
|
|
if (state.inESNext()) {
|
|
// because var is function scoped, look in the whole function
|
|
if (funct["(blockscope)"].labeltype(t.id) === "const") {
|
|
warning("E011", null, t.id);
|
|
}
|
|
}
|
|
if (!implied && funct["(global)"]) {
|
|
if (predefined[t.id] === false) {
|
|
warning("W079", t.token, t.id);
|
|
} else if (state.option.futurehostile === false) {
|
|
if ((!state.inES5() && vars.ecmaIdentifiers[5][t.id] === false) ||
|
|
(!state.inESNext() && vars.ecmaIdentifiers[6][t.id] === false)) {
|
|
warning("W129", t.token, t.id);
|
|
}
|
|
}
|
|
}
|
|
if (t.id) {
|
|
if (implied === "for") {
|
|
var ident = t.token.value;
|
|
switch (funct[ident]) {
|
|
case "unused":
|
|
funct[ident] = "var";
|
|
break;
|
|
case "var":
|
|
break;
|
|
default:
|
|
if (!funct["(blockscope)"].getlabel(ident) &&
|
|
!(scope[ident] || {})[ident]) {
|
|
if (report) warning("W088", t.token, ident);
|
|
}
|
|
}
|
|
} else {
|
|
addlabel(t.id, { type: "unused", token: t.token });
|
|
}
|
|
names.push(t.token);
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!prefix && report && state.option.varstmt) {
|
|
warning("W132", this);
|
|
}
|
|
|
|
this.first = this.first.concat(names);
|
|
|
|
if (state.tokens.next.id === "=") {
|
|
state.nameStack.set(state.tokens.curr);
|
|
|
|
advance("=");
|
|
if (!prefix && report && state.tokens.next.id === "undefined") {
|
|
warning("W080", state.tokens.prev, state.tokens.prev.value);
|
|
}
|
|
if (peek(0).id === "=" && state.tokens.next.identifier) {
|
|
if (!prefix && report &&
|
|
!funct["(params)"] || funct["(params)"].indexOf(state.tokens.next.value) === -1) {
|
|
warning("W120", state.tokens.next, state.tokens.next.value);
|
|
}
|
|
}
|
|
// don't accept `in` in expression if prefix is used for ForIn/Of loop.
|
|
value = expression(prefix ? 120 : 10);
|
|
if (lone) {
|
|
tokens[0].first = value;
|
|
} else {
|
|
destructuringExpressionMatch(names, value);
|
|
}
|
|
}
|
|
|
|
if (state.tokens.next.id !== ",") {
|
|
break;
|
|
}
|
|
comma();
|
|
}
|
|
|
|
return this;
|
|
});
|
|
varstatement.exps = true;
|
|
|
|
blockstmt("class", function() {
|
|
return classdef.call(this, true);
|
|
});
|
|
|
|
function classdef(isStatement) {
|
|
|
|
/*jshint validthis:true */
|
|
if (!state.inESNext()) {
|
|
warning("W104", state.tokens.curr, "class");
|
|
}
|
|
if (isStatement) {
|
|
// BindingIdentifier
|
|
this.name = identifier();
|
|
addlabel(this.name, { type: "unused", token: state.tokens.curr });
|
|
} else if (state.tokens.next.identifier && state.tokens.next.value !== "extends") {
|
|
// BindingIdentifier(opt)
|
|
this.name = identifier();
|
|
this.namedExpr = true;
|
|
} else {
|
|
this.name = state.nameStack.infer();
|
|
}
|
|
classtail(this);
|
|
return this;
|
|
}
|
|
|
|
function classtail(c) {
|
|
var wasInClassBody = state.inClassBody;
|
|
// ClassHeritage(opt)
|
|
if (state.tokens.next.value === "extends") {
|
|
advance("extends");
|
|
c.heritage = expression(10);
|
|
}
|
|
|
|
state.inClassBody = true;
|
|
advance("{");
|
|
// ClassBody(opt)
|
|
c.body = classbody(c);
|
|
advance("}");
|
|
state.inClassBody = wasInClassBody;
|
|
}
|
|
|
|
function classbody(c) {
|
|
var name;
|
|
var isStatic;
|
|
var isGenerator;
|
|
var getset;
|
|
var props = {};
|
|
var staticProps = {};
|
|
var computed;
|
|
for (var i = 0; state.tokens.next.id !== "}"; ++i) {
|
|
name = state.tokens.next;
|
|
isStatic = false;
|
|
isGenerator = false;
|
|
getset = null;
|
|
|
|
// The ES6 grammar for ClassElement includes the `;` token, but it is
|
|
// defined only as a placeholder to facilitate future language
|
|
// extensions. In ES6 code, it serves no purpose.
|
|
if (name.id === ";") {
|
|
warning("W032");
|
|
advance(";");
|
|
continue;
|
|
}
|
|
|
|
if (name.id === "*") {
|
|
isGenerator = true;
|
|
advance("*");
|
|
name = state.tokens.next;
|
|
}
|
|
if (name.id === "[") {
|
|
name = computedPropertyName();
|
|
computed = true;
|
|
} else if (isPropertyName(name)) {
|
|
// Non-Computed PropertyName
|
|
advance();
|
|
computed = false;
|
|
if (name.identifier && name.value === "static") {
|
|
if (checkPunctuators(state.tokens.next, ["*"])) {
|
|
isGenerator = true;
|
|
advance("*");
|
|
}
|
|
if (isPropertyName(state.tokens.next) || state.tokens.next.id === "[") {
|
|
computed = state.tokens.next.id === "[";
|
|
isStatic = true;
|
|
name = state.tokens.next;
|
|
if (state.tokens.next.id === "[") {
|
|
name = computedPropertyName();
|
|
} else advance();
|
|
}
|
|
}
|
|
|
|
if (name.identifier && (name.value === "get" || name.value === "set")) {
|
|
if (isPropertyName(state.tokens.next) || state.tokens.next.id === "[") {
|
|
computed = state.tokens.next.id === "[";
|
|
getset = name;
|
|
name = state.tokens.next;
|
|
if (state.tokens.next.id === "[") {
|
|
name = computedPropertyName();
|
|
} else advance();
|
|
}
|
|
}
|
|
} else {
|
|
warning("W052", state.tokens.next, state.tokens.next.value || state.tokens.next.type);
|
|
advance();
|
|
continue;
|
|
}
|
|
|
|
if (!checkPunctuators(state.tokens.next, ["("])) {
|
|
// error --- class properties must be methods
|
|
error("E054", state.tokens.next, state.tokens.next.value);
|
|
while (state.tokens.next.id !== "}" &&
|
|
!checkPunctuators(state.tokens.next, ["("])) {
|
|
advance();
|
|
}
|
|
if (state.tokens.next.value !== "(") {
|
|
doFunction({ statement: c });
|
|
}
|
|
}
|
|
|
|
if (!computed) {
|
|
// We don't know how to determine if we have duplicate computed property names :(
|
|
if (getset) {
|
|
saveAccessor(
|
|
getset.value, isStatic ? staticProps : props, name.value, name, true, isStatic);
|
|
} else {
|
|
if (name.value === "constructor") {
|
|
state.nameStack.set(c);
|
|
} else {
|
|
state.nameStack.set(name);
|
|
}
|
|
saveProperty(isStatic ? staticProps : props, name.value, name, true, isStatic);
|
|
}
|
|
}
|
|
|
|
if (getset && name.value === "constructor") {
|
|
var propDesc = getset.value === "get" ? "class getter method" : "class setter method";
|
|
error("E049", name, propDesc, "constructor");
|
|
} else if (name.value === "prototype") {
|
|
error("E049", name, "class method", "prototype");
|
|
}
|
|
|
|
propertyName(name);
|
|
|
|
doFunction({
|
|
statement: c,
|
|
type: isGenerator ? "generator" : null,
|
|
classExprBinding: c.namedExpr ? c.name : null
|
|
});
|
|
}
|
|
|
|
checkProperties(props);
|
|
}
|
|
|
|
blockstmt("function", function() {
|
|
var generator = false;
|
|
if (state.tokens.next.value === "*") {
|
|
advance("*");
|
|
if (state.inESNext({ strict: true })) {
|
|
generator = true;
|
|
} else {
|
|
warning("W119", state.tokens.curr, "function*");
|
|
}
|
|
}
|
|
if (inblock) {
|
|
warning("W082", state.tokens.curr);
|
|
|
|
}
|
|
var i = optionalidentifier();
|
|
|
|
if (i === undefined) {
|
|
warning("W025");
|
|
}
|
|
|
|
// check if a identifier with the same name is already defined
|
|
// in the blockscope as a const
|
|
if (funct["(blockscope)"].labeltype(i) === "const") {
|
|
warning("E011", null, i);
|
|
}
|
|
addlabel(i, { type: "unction", token: state.tokens.curr });
|
|
|
|
doFunction({
|
|
name: i,
|
|
statement: this,
|
|
type: generator ? "generator" : null
|
|
});
|
|
if (state.tokens.next.id === "(" && state.tokens.next.line === state.tokens.curr.line) {
|
|
error("E039");
|
|
}
|
|
return this;
|
|
});
|
|
|
|
prefix("function", function() {
|
|
var generator = false;
|
|
|
|
if (state.tokens.next.value === "*") {
|
|
if (!state.inESNext()) {
|
|
warning("W119", state.tokens.curr, "function*");
|
|
}
|
|
advance("*");
|
|
generator = true;
|
|
}
|
|
|
|
var i = optionalidentifier();
|
|
var fn = doFunction({ name: i, type: generator ? "generator" : null });
|
|
|
|
function isVariable(name) { return name[0] !== "("; }
|
|
function isLocal(name) { return fn[name] === "var"; }
|
|
|
|
if (!state.option.loopfunc && funct["(loopage)"]) {
|
|
// If the function we just parsed accesses any non-local variables
|
|
// trigger a warning. Otherwise, the function is safe even within
|
|
// a loop.
|
|
if (_.some(fn, function(val, name) { return isVariable(name) && !isLocal(name); })) {
|
|
warning("W083");
|
|
}
|
|
}
|
|
return this;
|
|
});
|
|
|
|
blockstmt("if", function() {
|
|
var t = state.tokens.next;
|
|
increaseComplexityCount();
|
|
state.condition = true;
|
|
advance("(");
|
|
var expr = expression(0);
|
|
checkCondAssignment(expr);
|
|
|
|
// When the if is within a for-in loop, check if the condition
|
|
// starts with a negation operator
|
|
var forinifcheck = null;
|
|
if (state.option.forin && state.forinifcheckneeded) {
|
|
state.forinifcheckneeded = false; // We only need to analyze the first if inside the loop
|
|
forinifcheck = state.forinifchecks[state.forinifchecks.length - 1];
|
|
if (expr.type === "(punctuator)" && expr.value === "!") {
|
|
forinifcheck.type = "(negative)";
|
|
} else {
|
|
forinifcheck.type = "(positive)";
|
|
}
|
|
}
|
|
|
|
advance(")", t);
|
|
state.condition = false;
|
|
var s = block(true, true);
|
|
|
|
// When the if is within a for-in loop and the condition has a negative form,
|
|
// check if the body contains nothing but a continue statement
|
|
if (forinifcheck && forinifcheck.type === "(negative)") {
|
|
if (s && s.length === 1 && s[0].type === "(identifier)" && s[0].value === "continue") {
|
|
forinifcheck.type = "(negative-with-continue)";
|
|
}
|
|
}
|
|
|
|
if (state.tokens.next.id === "else") {
|
|
advance("else");
|
|
if (state.tokens.next.id === "if" || state.tokens.next.id === "switch") {
|
|
statement();
|
|
} else {
|
|
block(true, true);
|
|
}
|
|
}
|
|
return this;
|
|
});
|
|
|
|
blockstmt("try", function() {
|
|
var b;
|
|
|
|
function doCatch() {
|
|
var oldScope = scope;
|
|
var e;
|
|
|
|
advance("catch");
|
|
advance("(");
|
|
|
|
scope = Object.create(oldScope);
|
|
|
|
e = state.tokens.next.value;
|
|
if (state.tokens.next.type !== "(identifier)") {
|
|
e = null;
|
|
warning("E030", state.tokens.next, e);
|
|
}
|
|
|
|
advance();
|
|
|
|
funct = functor("(catch)", state.tokens.next, scope, {
|
|
"(context)" : funct,
|
|
"(breakage)" : funct["(breakage)"],
|
|
"(loopage)" : funct["(loopage)"],
|
|
"(statement)": false,
|
|
"(catch)" : true
|
|
});
|
|
|
|
if (e) {
|
|
addlabel(e, { type: "exception" });
|
|
}
|
|
|
|
if (state.tokens.next.value === "if") {
|
|
if (!state.inMoz()) {
|
|
warning("W118", state.tokens.curr, "catch filter");
|
|
}
|
|
advance("if");
|
|
expression(0);
|
|
}
|
|
|
|
advance(")");
|
|
|
|
state.tokens.curr.funct = funct;
|
|
functions.push(funct);
|
|
|
|
block(false);
|
|
|
|
scope = oldScope;
|
|
|
|
funct["(last)"] = state.tokens.curr.line;
|
|
funct["(lastcharacter)"] = state.tokens.curr.character;
|
|
funct = funct["(context)"];
|
|
}
|
|
|
|
block(true);
|
|
|
|
while (state.tokens.next.id === "catch") {
|
|
increaseComplexityCount();
|
|
if (b && (!state.inMoz())) {
|
|
warning("W118", state.tokens.next, "multiple catch blocks");
|
|
}
|
|
doCatch();
|
|
b = true;
|
|
}
|
|
|
|
if (state.tokens.next.id === "finally") {
|
|
advance("finally");
|
|
block(true);
|
|
return;
|
|
}
|
|
|
|
if (!b) {
|
|
error("E021", state.tokens.next, "catch", state.tokens.next.value);
|
|
}
|
|
|
|
return this;
|
|
});
|
|
|
|
blockstmt("while", function() {
|
|
var t = state.tokens.next;
|
|
funct["(breakage)"] += 1;
|
|
funct["(loopage)"] += 1;
|
|
increaseComplexityCount();
|
|
advance("(");
|
|
checkCondAssignment(expression(0));
|
|
advance(")", t);
|
|
block(true, true);
|
|
funct["(breakage)"] -= 1;
|
|
funct["(loopage)"] -= 1;
|
|
return this;
|
|
}).labelled = true;
|
|
|
|
blockstmt("with", function() {
|
|
var t = state.tokens.next;
|
|
if (state.isStrict()) {
|
|
error("E010", state.tokens.curr);
|
|
} else if (!state.option.withstmt) {
|
|
warning("W085", state.tokens.curr);
|
|
}
|
|
|
|
advance("(");
|
|
expression(0);
|
|
advance(")", t);
|
|
block(true, true);
|
|
|
|
return this;
|
|
});
|
|
|
|
blockstmt("switch", function() {
|
|
var t = state.tokens.next;
|
|
var g = false;
|
|
var noindent = false;
|
|
|
|
funct["(breakage)"] += 1;
|
|
advance("(");
|
|
checkCondAssignment(expression(0));
|
|
advance(")", t);
|
|
t = state.tokens.next;
|
|
advance("{");
|
|
|
|
if (state.tokens.next.from === indent)
|
|
noindent = true;
|
|
|
|
if (!noindent)
|
|
indent += state.option.indent;
|
|
|
|
this.cases = [];
|
|
|
|
for (;;) {
|
|
switch (state.tokens.next.id) {
|
|
case "case":
|
|
switch (funct["(verb)"]) {
|
|
case "yield":
|
|
case "break":
|
|
case "case":
|
|
case "continue":
|
|
case "return":
|
|
case "switch":
|
|
case "throw":
|
|
break;
|
|
default:
|
|
// You can tell JSHint that you don't use break intentionally by
|
|
// adding a comment /* falls through */ on a line just before
|
|
// the next `case`.
|
|
if (!reg.fallsThrough.test(state.lines[state.tokens.next.line - 2])) {
|
|
warning("W086", state.tokens.curr, "case");
|
|
}
|
|
}
|
|
|
|
advance("case");
|
|
this.cases.push(expression(0));
|
|
increaseComplexityCount();
|
|
g = true;
|
|
advance(":");
|
|
funct["(verb)"] = "case";
|
|
break;
|
|
case "default":
|
|
switch (funct["(verb)"]) {
|
|
case "yield":
|
|
case "break":
|
|
case "continue":
|
|
case "return":
|
|
case "throw":
|
|
break;
|
|
default:
|
|
// Do not display a warning if 'default' is the first statement or if
|
|
// there is a special /* falls through */ comment.
|
|
if (this.cases.length) {
|
|
if (!reg.fallsThrough.test(state.lines[state.tokens.next.line - 2])) {
|
|
warning("W086", state.tokens.curr, "default");
|
|
}
|
|
}
|
|
}
|
|
|
|
advance("default");
|
|
g = true;
|
|
advance(":");
|
|
break;
|
|
case "}":
|
|
if (!noindent)
|
|
indent -= state.option.indent;
|
|
|
|
advance("}", t);
|
|
funct["(breakage)"] -= 1;
|
|
funct["(verb)"] = undefined;
|
|
return;
|
|
case "(end)":
|
|
error("E023", state.tokens.next, "}");
|
|
return;
|
|
default:
|
|
indent += state.option.indent;
|
|
if (g) {
|
|
switch (state.tokens.curr.id) {
|
|
case ",":
|
|
error("E040");
|
|
return;
|
|
case ":":
|
|
g = false;
|
|
statements();
|
|
break;
|
|
default:
|
|
error("E025", state.tokens.curr);
|
|
return;
|
|
}
|
|
} else {
|
|
if (state.tokens.curr.id === ":") {
|
|
advance(":");
|
|
error("E024", state.tokens.curr, ":");
|
|
statements();
|
|
} else {
|
|
error("E021", state.tokens.next, "case", state.tokens.next.value);
|
|
return;
|
|
}
|
|
}
|
|
indent -= state.option.indent;
|
|
}
|
|
}
|
|
}).labelled = true;
|
|
|
|
stmt("debugger", function() {
|
|
if (!state.option.debug) {
|
|
warning("W087", this);
|
|
}
|
|
return this;
|
|
}).exps = true;
|
|
|
|
(function() {
|
|
var x = stmt("do", function() {
|
|
funct["(breakage)"] += 1;
|
|
funct["(loopage)"] += 1;
|
|
increaseComplexityCount();
|
|
|
|
this.first = block(true, true);
|
|
advance("while");
|
|
var t = state.tokens.next;
|
|
advance("(");
|
|
checkCondAssignment(expression(0));
|
|
advance(")", t);
|
|
funct["(breakage)"] -= 1;
|
|
funct["(loopage)"] -= 1;
|
|
return this;
|
|
});
|
|
x.labelled = true;
|
|
x.exps = true;
|
|
}());
|
|
|
|
blockstmt("for", function() {
|
|
var s, t = state.tokens.next;
|
|
var letscope = false;
|
|
var foreachtok = null;
|
|
|
|
if (t.value === "each") {
|
|
foreachtok = t;
|
|
advance("each");
|
|
if (!state.inMoz()) {
|
|
warning("W118", state.tokens.curr, "for each");
|
|
}
|
|
}
|
|
|
|
funct["(breakage)"] += 1;
|
|
funct["(loopage)"] += 1;
|
|
increaseComplexityCount();
|
|
advance("(");
|
|
|
|
// what kind of for(…) statement it is? for(…of…)? for(…in…)? for(…;…;…)?
|
|
var nextop; // contains the token of the "in" or "of" operator
|
|
var i = 0;
|
|
var inof = ["in", "of"];
|
|
var level = 0; // BindingPattern "level" --- level 0 === no BindingPattern
|
|
var comma; // First comma punctuator at level 0
|
|
var initializer; // First initializer at level 0
|
|
|
|
// If initial token is a BindingPattern, count it as such.
|
|
if (checkPunctuators(state.tokens.next, ["{", "["])) ++level;
|
|
do {
|
|
nextop = peek(i);
|
|
++i;
|
|
if (checkPunctuators(nextop, ["{", "["])) ++level;
|
|
else if (checkPunctuators(nextop, ["}", "]"])) --level;
|
|
if (level < 0) break;
|
|
if (level === 0) {
|
|
if (!comma && checkPunctuators(nextop, [","])) comma = nextop;
|
|
else if (!initializer && checkPunctuators(nextop, ["="])) initializer = nextop;
|
|
}
|
|
} while (level > 0 || !_.contains(inof, nextop.value) && nextop.value !== ";" &&
|
|
nextop.type !== "(end)"); // Is this a JSCS bug? This looks really weird.
|
|
|
|
// if we're in a for (… in|of …) statement
|
|
if (_.contains(inof, nextop.value)) {
|
|
if (!state.inESNext() && nextop.value === "of") {
|
|
error("W104", nextop, "for of");
|
|
}
|
|
|
|
var ok = !(initializer || comma);
|
|
if (initializer) {
|
|
error("W133", comma, nextop.value, "initializer is forbidden");
|
|
}
|
|
|
|
if (comma) {
|
|
error("W133", comma, nextop.value, "more than one ForBinding");
|
|
}
|
|
|
|
if (state.tokens.next.id === "var") {
|
|
advance("var");
|
|
state.tokens.curr.fud({ prefix: true });
|
|
} else if (state.tokens.next.id === "let" || state.tokens.next.id === "const") {
|
|
advance(state.tokens.next.id);
|
|
// create a new block scope
|
|
letscope = true;
|
|
funct["(blockscope)"].stack();
|
|
state.tokens.curr.fud({ prefix: true });
|
|
} else {
|
|
// Parse as a var statement, with implied bindings. Ignore errors if an error
|
|
// was already reported
|
|
Object.create(varstatement).fud({ prefix: true, implied: "for", ignore: !ok });
|
|
}
|
|
advance(nextop.value);
|
|
expression(20);
|
|
advance(")", t);
|
|
|
|
if (nextop.value === "in" && state.option.forin) {
|
|
state.forinifcheckneeded = true;
|
|
|
|
if (state.forinifchecks === undefined) {
|
|
state.forinifchecks = [];
|
|
}
|
|
|
|
// Push a new for-in-if check onto the stack. The type will be modified
|
|
// when the loop's body is parsed and a suitable if statement exists.
|
|
state.forinifchecks.push({
|
|
type: "(none)"
|
|
});
|
|
}
|
|
|
|
s = block(true, true);
|
|
|
|
if (nextop.value === "in" && state.option.forin) {
|
|
if (state.forinifchecks && state.forinifchecks.length > 0) {
|
|
var check = state.forinifchecks.pop();
|
|
|
|
if (// No if statement or not the first statement in loop body
|
|
s && s.length > 0 && (typeof s[0] !== "object" || s[0].value !== "if") ||
|
|
// Positive if statement is not the only one in loop body
|
|
check.type === "(positive)" && s.length > 1 ||
|
|
// Negative if statement but no continue
|
|
check.type === "(negative)") {
|
|
warning("W089", this);
|
|
}
|
|
}
|
|
|
|
// Reset the flag in case no if statement was contained in the loop body
|
|
state.forinifcheckneeded = false;
|
|
}
|
|
|
|
funct["(breakage)"] -= 1;
|
|
funct["(loopage)"] -= 1;
|
|
} else {
|
|
if (foreachtok) {
|
|
error("E045", foreachtok);
|
|
}
|
|
if (state.tokens.next.id !== ";") {
|
|
if (state.tokens.next.id === "var") {
|
|
advance("var");
|
|
state.tokens.curr.fud();
|
|
} else if (state.tokens.next.id === "let") {
|
|
advance("let");
|
|
// create a new block scope
|
|
letscope = true;
|
|
funct["(blockscope)"].stack();
|
|
state.tokens.curr.fud();
|
|
} else {
|
|
for (;;) {
|
|
expression(0, "for");
|
|
if (state.tokens.next.id !== ",") {
|
|
break;
|
|
}
|
|
comma();
|
|
}
|
|
}
|
|
}
|
|
nolinebreak(state.tokens.curr);
|
|
advance(";");
|
|
if (state.tokens.next.id !== ";") {
|
|
checkCondAssignment(expression(0));
|
|
}
|
|
nolinebreak(state.tokens.curr);
|
|
advance(";");
|
|
if (state.tokens.next.id === ";") {
|
|
error("E021", state.tokens.next, ")", ";");
|
|
}
|
|
if (state.tokens.next.id !== ")") {
|
|
for (;;) {
|
|
expression(0, "for");
|
|
if (state.tokens.next.id !== ",") {
|
|
break;
|
|
}
|
|
comma();
|
|
}
|
|
}
|
|
advance(")", t);
|
|
block(true, true);
|
|
funct["(breakage)"] -= 1;
|
|
funct["(loopage)"] -= 1;
|
|
|
|
}
|
|
// unstack loop blockscope
|
|
if (letscope) {
|
|
funct["(blockscope)"].unstack();
|
|
}
|
|
return this;
|
|
}).labelled = true;
|
|
|
|
|
|
stmt("break", function() {
|
|
var v = state.tokens.next.value;
|
|
|
|
if (funct["(breakage)"] === 0)
|
|
warning("W052", state.tokens.next, this.value);
|
|
|
|
if (!state.option.asi)
|
|
nolinebreak(this);
|
|
|
|
if (state.tokens.next.id !== ";" && !state.tokens.next.reach) {
|
|
if (state.tokens.curr.line === startLine(state.tokens.next)) {
|
|
if (funct[v] !== "label") {
|
|
warning("W090", state.tokens.next, v);
|
|
} else if (scope[v] !== funct) {
|
|
warning("W091", state.tokens.next, v);
|
|
}
|
|
this.first = state.tokens.next;
|
|
advance();
|
|
}
|
|
}
|
|
|
|
reachable(this);
|
|
|
|
return this;
|
|
}).exps = true;
|
|
|
|
|
|
stmt("continue", function() {
|
|
var v = state.tokens.next.value;
|
|
|
|
if (funct["(breakage)"] === 0)
|
|
warning("W052", state.tokens.next, this.value);
|
|
|
|
if (!state.option.asi)
|
|
nolinebreak(this);
|
|
|
|
if (state.tokens.next.id !== ";" && !state.tokens.next.reach) {
|
|
if (state.tokens.curr.line === startLine(state.tokens.next)) {
|
|
if (funct[v] !== "label") {
|
|
warning("W090", state.tokens.next, v);
|
|
} else if (scope[v] !== funct) {
|
|
warning("W091", state.tokens.next, v);
|
|
}
|
|
this.first = state.tokens.next;
|
|
advance();
|
|
}
|
|
} else if (!funct["(loopage)"]) {
|
|
warning("W052", state.tokens.next, this.value);
|
|
}
|
|
|
|
reachable(this);
|
|
|
|
return this;
|
|
}).exps = true;
|
|
|
|
|
|
stmt("return", function() {
|
|
if (this.line === startLine(state.tokens.next)) {
|
|
if (state.tokens.next.id !== ";" && !state.tokens.next.reach) {
|
|
this.first = expression(0);
|
|
|
|
if (this.first &&
|
|
this.first.type === "(punctuator)" && this.first.value === "=" &&
|
|
!this.first.paren && !state.option.boss) {
|
|
warningAt("W093", this.first.line, this.first.character);
|
|
}
|
|
}
|
|
} else {
|
|
if (state.tokens.next.type === "(punctuator)" &&
|
|
["[", "{", "+", "-"].indexOf(state.tokens.next.value) > -1) {
|
|
nolinebreak(this); // always warn (Line breaking error)
|
|
}
|
|
}
|
|
|
|
reachable(this);
|
|
|
|
return this;
|
|
}).exps = true;
|
|
|
|
(function(x) {
|
|
x.exps = true;
|
|
x.lbp = 25;
|
|
}(prefix("yield", function() {
|
|
var prev = state.tokens.prev;
|
|
if (state.inESNext(true) && !funct["(generator)"]) {
|
|
// If it's a yield within a catch clause inside a generator then that's ok
|
|
if (!("(catch)" === funct["(name)"] && funct["(context)"]["(generator)"])) {
|
|
error("E046", state.tokens.curr, "yield");
|
|
}
|
|
} else if (!state.inESNext()) {
|
|
warning("W104", state.tokens.curr, "yield");
|
|
}
|
|
funct["(generator)"] = "yielded";
|
|
var delegatingYield = false;
|
|
|
|
if (state.tokens.next.value === "*") {
|
|
delegatingYield = true;
|
|
advance("*");
|
|
}
|
|
|
|
if (this.line === startLine(state.tokens.next) || !state.inMoz()) {
|
|
if (delegatingYield ||
|
|
(state.tokens.next.id !== ";" && !state.tokens.next.reach && state.tokens.next.nud)) {
|
|
|
|
nobreaknonadjacent(state.tokens.curr, state.tokens.next);
|
|
this.first = expression(10);
|
|
|
|
if (this.first.type === "(punctuator)" && this.first.value === "=" &&
|
|
!this.first.paren && !state.option.boss) {
|
|
warningAt("W093", this.first.line, this.first.character);
|
|
}
|
|
}
|
|
|
|
if (state.inMoz() && state.tokens.next.id !== ")" &&
|
|
(prev.lbp > 30 || (!prev.assign && !isEndOfExpr()) || prev.id === "yield")) {
|
|
error("E050", this);
|
|
}
|
|
} else if (!state.option.asi) {
|
|
nolinebreak(this); // always warn (Line breaking error)
|
|
}
|
|
return this;
|
|
})));
|
|
|
|
|
|
stmt("throw", function() {
|
|
nolinebreak(this);
|
|
this.first = expression(20);
|
|
|
|
reachable(this);
|
|
|
|
return this;
|
|
}).exps = true;
|
|
|
|
stmt("import", function() {
|
|
if (!state.inESNext()) {
|
|
warning("W119", state.tokens.curr, "import");
|
|
}
|
|
|
|
if (state.tokens.next.type === "(string)") {
|
|
// ModuleSpecifier :: StringLiteral
|
|
advance("(string)");
|
|
return this;
|
|
}
|
|
|
|
if (state.tokens.next.identifier) {
|
|
// ImportClause :: ImportedDefaultBinding
|
|
this.name = identifier();
|
|
addlabel(this.name, { type: "unused", token: state.tokens.curr });
|
|
if (state.tokens.next.value === ",") {
|
|
// ImportClause :: ImportedDefaultBinding , NameSpaceImport
|
|
// ImportClause :: ImportedDefaultBinding , NamedImports
|
|
advance(",");
|
|
// At this point, we intentionally fall through to continue matching
|
|
// either NameSpaceImport or NamedImports.
|
|
// Discussion:
|
|
// https://github.com/jshint/jshint/pull/2144#discussion_r23978406
|
|
} else {
|
|
advance("from");
|
|
advance("(string)");
|
|
return this;
|
|
}
|
|
}
|
|
|
|
if (state.tokens.next.id === "*") {
|
|
// ImportClause :: NameSpaceImport
|
|
advance("*");
|
|
advance("as");
|
|
if (state.tokens.next.identifier) {
|
|
this.name = identifier();
|
|
addlabel(this.name, { type: "unused", token: state.tokens.curr });
|
|
}
|
|
} else {
|
|
// ImportClause :: NamedImports
|
|
advance("{");
|
|
for (;;) {
|
|
if (state.tokens.next.value === "}") {
|
|
advance("}");
|
|
break;
|
|
}
|
|
var importName;
|
|
if (state.tokens.next.type === "default") {
|
|
importName = "default";
|
|
advance("default");
|
|
} else {
|
|
importName = identifier();
|
|
}
|
|
if (state.tokens.next.value === "as") {
|
|
advance("as");
|
|
importName = identifier();
|
|
}
|
|
addlabel(importName, { type: "unused", token: state.tokens.curr });
|
|
|
|
if (state.tokens.next.value === ",") {
|
|
advance(",");
|
|
} else if (state.tokens.next.value === "}") {
|
|
advance("}");
|
|
break;
|
|
} else {
|
|
error("E024", state.tokens.next, state.tokens.next.value);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// FromClause
|
|
advance("from");
|
|
advance("(string)");
|
|
return this;
|
|
}).exps = true;
|
|
|
|
stmt("export", function() {
|
|
var ok = true;
|
|
var token;
|
|
var identifier;
|
|
|
|
if (!state.inESNext()) {
|
|
warning("W119", state.tokens.curr, "export");
|
|
ok = false;
|
|
}
|
|
|
|
if (!funct["(global)"] || !funct["(blockscope)"].atTop()) {
|
|
error("E053", state.tokens.curr);
|
|
ok = false;
|
|
}
|
|
|
|
if (state.tokens.next.value === "*") {
|
|
// ExportDeclaration :: export * FromClause
|
|
advance("*");
|
|
advance("from");
|
|
advance("(string)");
|
|
return this;
|
|
}
|
|
|
|
if (state.tokens.next.type === "default") {
|
|
// ExportDeclaration :: export default HoistableDeclaration
|
|
// ExportDeclaration :: export default ClassDeclaration
|
|
state.nameStack.set(state.tokens.next);
|
|
advance("default");
|
|
if (state.tokens.next.id === "function" || state.tokens.next.id === "class") {
|
|
this.block = true;
|
|
}
|
|
|
|
token = peek();
|
|
|
|
expression(10);
|
|
|
|
if (state.tokens.next.id === "class") {
|
|
identifier = token.name;
|
|
} else {
|
|
identifier = token.value;
|
|
}
|
|
|
|
addlabel(identifier, {
|
|
type: "function", token: token
|
|
});
|
|
|
|
return this;
|
|
}
|
|
|
|
if (state.tokens.next.value === "{") {
|
|
// ExportDeclaration :: export ExportClause
|
|
advance("{");
|
|
var exportedTokens = [];
|
|
for (;;) {
|
|
if (!state.tokens.next.identifier) {
|
|
error("E030", state.tokens.next, state.tokens.next.value);
|
|
}
|
|
advance();
|
|
|
|
state.tokens.curr.exported = ok;
|
|
exportedTokens.push(state.tokens.curr);
|
|
|
|
if (state.tokens.next.value === "as") {
|
|
advance("as");
|
|
if (!state.tokens.next.identifier) {
|
|
error("E030", state.tokens.next, state.tokens.next.value);
|
|
}
|
|
advance();
|
|
}
|
|
|
|
if (state.tokens.next.value === ",") {
|
|
advance(",");
|
|
} else if (state.tokens.next.value === "}") {
|
|
advance("}");
|
|
break;
|
|
} else {
|
|
error("E024", state.tokens.next, state.tokens.next.value);
|
|
break;
|
|
}
|
|
}
|
|
if (state.tokens.next.value === "from") {
|
|
// ExportDeclaration :: export ExportClause FromClause
|
|
advance("from");
|
|
advance("(string)");
|
|
} else if (ok) {
|
|
exportedTokens.forEach(function(token) {
|
|
if (!funct[token.value]) {
|
|
isundef(funct, "W117", token, token.value);
|
|
}
|
|
exported[token.value] = true;
|
|
funct["(blockscope)"].setExported(token.value);
|
|
});
|
|
}
|
|
return this;
|
|
}
|
|
|
|
if (state.tokens.next.id === "var") {
|
|
// ExportDeclaration :: export VariableStatement
|
|
advance("var");
|
|
state.tokens.curr.fud({ inexport:true });
|
|
} else if (state.tokens.next.id === "let") {
|
|
// ExportDeclaration :: export VariableStatement
|
|
advance("let");
|
|
state.tokens.curr.fud({ inexport:true });
|
|
} else if (state.tokens.next.id === "const") {
|
|
// ExportDeclaration :: export VariableStatement
|
|
advance("const");
|
|
state.tokens.curr.fud({ inexport:true });
|
|
} else if (state.tokens.next.id === "function") {
|
|
// ExportDeclaration :: export Declaration
|
|
this.block = true;
|
|
advance("function");
|
|
exported[state.tokens.next.value] = ok;
|
|
state.tokens.next.exported = true;
|
|
state.syntax["function"].fud();
|
|
} else if (state.tokens.next.id === "class") {
|
|
// ExportDeclaration :: export Declaration
|
|
this.block = true;
|
|
advance("class");
|
|
exported[state.tokens.next.value] = ok;
|
|
state.tokens.next.exported = true;
|
|
state.syntax["class"].fud();
|
|
} else {
|
|
error("E024", state.tokens.next, state.tokens.next.value);
|
|
}
|
|
|
|
return this;
|
|
}).exps = true;
|
|
|
|
// Future Reserved Words
|
|
|
|
FutureReservedWord("abstract");
|
|
FutureReservedWord("boolean");
|
|
FutureReservedWord("byte");
|
|
FutureReservedWord("char");
|
|
FutureReservedWord("class", { es5: true, nud: classdef });
|
|
FutureReservedWord("double");
|
|
FutureReservedWord("enum", { es5: true });
|
|
FutureReservedWord("export", { es5: true });
|
|
FutureReservedWord("extends", { es5: true });
|
|
FutureReservedWord("final");
|
|
FutureReservedWord("float");
|
|
FutureReservedWord("goto");
|
|
FutureReservedWord("implements", { es5: true, strictOnly: true });
|
|
FutureReservedWord("import", { es5: true });
|
|
FutureReservedWord("int");
|
|
FutureReservedWord("interface", { es5: true, strictOnly: true });
|
|
FutureReservedWord("long");
|
|
FutureReservedWord("native");
|
|
FutureReservedWord("package", { es5: true, strictOnly: true });
|
|
FutureReservedWord("private", { es5: true, strictOnly: true });
|
|
FutureReservedWord("protected", { es5: true, strictOnly: true });
|
|
FutureReservedWord("public", { es5: true, strictOnly: true });
|
|
FutureReservedWord("short");
|
|
FutureReservedWord("static", { es5: true, strictOnly: true });
|
|
FutureReservedWord("super", { es5: true });
|
|
FutureReservedWord("synchronized");
|
|
FutureReservedWord("transient");
|
|
FutureReservedWord("volatile");
|
|
|
|
// this function is used to determine whether a squarebracket or a curlybracket
|
|
// expression is a comprehension array, destructuring assignment or a json value.
|
|
|
|
var lookupBlockType = function() {
|
|
var pn, pn1;
|
|
var i = -1;
|
|
var bracketStack = 0;
|
|
var ret = {};
|
|
if (checkPunctuators(state.tokens.curr, ["[", "{"]))
|
|
bracketStack += 1;
|
|
do {
|
|
pn = (i === -1) ? state.tokens.next : peek(i);
|
|
pn1 = peek(i + 1);
|
|
i = i + 1;
|
|
if (checkPunctuators(pn, ["[", "{"])) {
|
|
bracketStack += 1;
|
|
} else if (checkPunctuators(pn, ["]", "}"])) {
|
|
bracketStack -= 1;
|
|
}
|
|
if (pn.identifier && pn.value === "for" && bracketStack === 1) {
|
|
ret.isCompArray = true;
|
|
ret.notJson = true;
|
|
break;
|
|
}
|
|
if (checkPunctuators(pn, ["}", "]"]) && bracketStack === 0) {
|
|
if (pn1.value === "=") {
|
|
ret.isDestAssign = true;
|
|
ret.notJson = true;
|
|
break;
|
|
} else if (pn1.value === ".") {
|
|
ret.notJson = true;
|
|
break;
|
|
}
|
|
}
|
|
if (pn.value === ";") {
|
|
ret.isBlock = true;
|
|
ret.notJson = true;
|
|
}
|
|
} while (bracketStack > 0 && pn.id !== "(end)");
|
|
return ret;
|
|
};
|
|
|
|
function saveProperty(props, name, tkn, isClass, isStatic) {
|
|
var msg = ["key", "class method", "static class method"];
|
|
msg = msg[(isClass || false) + (isStatic || false)];
|
|
if (tkn.identifier) {
|
|
name = tkn.value;
|
|
}
|
|
|
|
if (props[name] && _.has(props, name)) {
|
|
warning("W075", state.tokens.next, msg, name);
|
|
} else {
|
|
props[name] = {};
|
|
}
|
|
|
|
props[name].basic = true;
|
|
props[name].basictkn = tkn;
|
|
}
|
|
|
|
/**
|
|
* @param {string} accessorType - Either "get" or "set"
|
|
* @param {object} props - a collection of all properties of the object to
|
|
* which the current accessor is being assigned
|
|
* @param {object} tkn - the identifier token representing the accessor name
|
|
* @param {boolean} isClass - whether the accessor is part of an ES6 Class
|
|
* definition
|
|
* @param {boolean} isStatic - whether the accessor is a static method
|
|
*/
|
|
function saveAccessor(accessorType, props, name, tkn, isClass, isStatic) {
|
|
var flagName = accessorType === "get" ? "getterToken" : "setterToken";
|
|
var msg = "";
|
|
|
|
if (isClass) {
|
|
if (isStatic) {
|
|
msg += "static ";
|
|
}
|
|
msg += accessorType + "ter method";
|
|
} else {
|
|
msg = "key";
|
|
}
|
|
|
|
state.tokens.curr.accessorType = accessorType;
|
|
state.nameStack.set(tkn);
|
|
|
|
if (props[name] && _.has(props, name)) {
|
|
if (props[name].basic || props[name][flagName]) {
|
|
warning("W075", state.tokens.next, msg, name);
|
|
}
|
|
} else {
|
|
props[name] = {};
|
|
}
|
|
|
|
props[name][flagName] = tkn;
|
|
}
|
|
|
|
function computedPropertyName() {
|
|
advance("[");
|
|
if (!state.option.esnext) {
|
|
warning("W119", state.tokens.curr, "computed property names");
|
|
}
|
|
var value = expression(10);
|
|
advance("]");
|
|
return value;
|
|
}
|
|
|
|
// Test whether a given token is a punctuator matching one of the specified values
|
|
function checkPunctuators(token, values) {
|
|
return token.type === "(punctuator)" && _.contains(values, token.value);
|
|
}
|
|
|
|
// Check whether this function has been reached for a destructuring assign with undeclared values
|
|
function destructuringAssignOrJsonValue() {
|
|
// lookup for the assignment (esnext only)
|
|
// if it has semicolons, it is a block, so go parse it as a block
|
|
// or it's not a block, but there are assignments, check for undeclared variables
|
|
|
|
var block = lookupBlockType();
|
|
if (block.notJson) {
|
|
if (!state.inESNext() && block.isDestAssign) {
|
|
warning("W104", state.tokens.curr, "destructuring assignment");
|
|
}
|
|
statements();
|
|
// otherwise parse json value
|
|
} else {
|
|
state.option.laxbreak = true;
|
|
state.jsonMode = true;
|
|
jsonValue();
|
|
}
|
|
}
|
|
|
|
// array comprehension parsing function
|
|
// parses and defines the three states of the list comprehension in order
|
|
// to avoid defining global variables, but keeping them to the list comprehension scope
|
|
// only. The order of the states are as follows:
|
|
// * "use" which will be the returned iterative part of the list comprehension
|
|
// * "define" which will define the variables local to the list comprehension
|
|
// * "filter" which will help filter out values
|
|
|
|
var arrayComprehension = function() {
|
|
var CompArray = function() {
|
|
this.mode = "use";
|
|
this.variables = [];
|
|
};
|
|
var _carrays = [];
|
|
var _current;
|
|
function declare(v) {
|
|
var l = _current.variables.filter(function(elt) {
|
|
// if it has, change its undef state
|
|
if (elt.value === v) {
|
|
elt.undef = false;
|
|
return v;
|
|
}
|
|
}).length;
|
|
return l !== 0;
|
|
}
|
|
function use(v) {
|
|
var l = _current.variables.filter(function(elt) {
|
|
// and if it has been defined
|
|
if (elt.value === v && !elt.undef) {
|
|
if (elt.unused === true) {
|
|
elt.unused = false;
|
|
}
|
|
return v;
|
|
}
|
|
}).length;
|
|
// otherwise we warn about it
|
|
return (l === 0);
|
|
}
|
|
return { stack: function() {
|
|
_current = new CompArray();
|
|
_carrays.push(_current);
|
|
},
|
|
unstack: function() {
|
|
_current.variables.filter(function(v) {
|
|
if (v.unused)
|
|
warning("W098", v.token, v.raw_text || v.value);
|
|
if (v.undef)
|
|
isundef(v.funct, "W117", v.token, v.value);
|
|
});
|
|
_carrays.splice(-1, 1);
|
|
_current = _carrays[_carrays.length - 1];
|
|
},
|
|
setState: function(s) {
|
|
if (_.contains(["use", "define", "generate", "filter"], s))
|
|
_current.mode = s;
|
|
},
|
|
check: function(v) {
|
|
if (!_current) {
|
|
return;
|
|
}
|
|
// When we are in "use" state of the list comp, we enqueue that var
|
|
if (_current && _current.mode === "use") {
|
|
if (use(v)) {
|
|
_current.variables.push({
|
|
funct: funct,
|
|
token: state.tokens.curr,
|
|
value: v,
|
|
undef: true,
|
|
unused: false
|
|
});
|
|
}
|
|
return true;
|
|
// When we are in "define" state of the list comp,
|
|
} else if (_current && _current.mode === "define") {
|
|
// check if the variable has been used previously
|
|
if (!declare(v)) {
|
|
_current.variables.push({
|
|
funct: funct,
|
|
token: state.tokens.curr,
|
|
value: v,
|
|
undef: false,
|
|
unused: true
|
|
});
|
|
}
|
|
return true;
|
|
// When we are in the "generate" state of the list comp,
|
|
} else if (_current && _current.mode === "generate") {
|
|
isundef(funct, "W117", state.tokens.curr, v);
|
|
return true;
|
|
// When we are in "filter" state,
|
|
} else if (_current && _current.mode === "filter") {
|
|
// we check whether current variable has been declared
|
|
if (use(v)) {
|
|
// if not we warn about it
|
|
isundef(funct, "W117", state.tokens.curr, v);
|
|
}
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
};
|
|
};
|
|
|
|
|
|
// Parse JSON
|
|
|
|
function jsonValue() {
|
|
function jsonObject() {
|
|
var o = {}, t = state.tokens.next;
|
|
advance("{");
|
|
if (state.tokens.next.id !== "}") {
|
|
for (;;) {
|
|
if (state.tokens.next.id === "(end)") {
|
|
error("E026", state.tokens.next, t.line);
|
|
} else if (state.tokens.next.id === "}") {
|
|
warning("W094", state.tokens.curr);
|
|
break;
|
|
} else if (state.tokens.next.id === ",") {
|
|
error("E028", state.tokens.next);
|
|
} else if (state.tokens.next.id !== "(string)") {
|
|
warning("W095", state.tokens.next, state.tokens.next.value);
|
|
}
|
|
if (o[state.tokens.next.value] === true) {
|
|
warning("W075", state.tokens.next, "key", state.tokens.next.value);
|
|
} else if ((state.tokens.next.value === "__proto__" &&
|
|
!state.option.proto) || (state.tokens.next.value === "__iterator__" &&
|
|
!state.option.iterator)) {
|
|
warning("W096", state.tokens.next, state.tokens.next.value);
|
|
} else {
|
|
o[state.tokens.next.value] = true;
|
|
}
|
|
advance();
|
|
advance(":");
|
|
jsonValue();
|
|
if (state.tokens.next.id !== ",") {
|
|
break;
|
|
}
|
|
advance(",");
|
|
}
|
|
}
|
|
advance("}");
|
|
}
|
|
|
|
function jsonArray() {
|
|
var t = state.tokens.next;
|
|
advance("[");
|
|
if (state.tokens.next.id !== "]") {
|
|
for (;;) {
|
|
if (state.tokens.next.id === "(end)") {
|
|
error("E027", state.tokens.next, t.line);
|
|
} else if (state.tokens.next.id === "]") {
|
|
warning("W094", state.tokens.curr);
|
|
break;
|
|
} else if (state.tokens.next.id === ",") {
|
|
error("E028", state.tokens.next);
|
|
}
|
|
jsonValue();
|
|
if (state.tokens.next.id !== ",") {
|
|
break;
|
|
}
|
|
advance(",");
|
|
}
|
|
}
|
|
advance("]");
|
|
}
|
|
|
|
switch (state.tokens.next.id) {
|
|
case "{":
|
|
jsonObject();
|
|
break;
|
|
case "[":
|
|
jsonArray();
|
|
break;
|
|
case "true":
|
|
case "false":
|
|
case "null":
|
|
case "(number)":
|
|
case "(string)":
|
|
advance();
|
|
break;
|
|
case "-":
|
|
advance("-");
|
|
advance("(number)");
|
|
break;
|
|
default:
|
|
error("E003", state.tokens.next);
|
|
}
|
|
}
|
|
|
|
var warnUnused = function(name, tkn, type, unused_opt) {
|
|
var line = tkn.line;
|
|
var chr = tkn.from;
|
|
var raw_name = tkn.raw_text || name;
|
|
|
|
if (unused_opt === undefined) {
|
|
unused_opt = state.option.unused;
|
|
}
|
|
|
|
if (unused_opt === true) {
|
|
unused_opt = "last-param";
|
|
}
|
|
|
|
var warnable_types = {
|
|
"vars": ["var"],
|
|
"last-param": ["var", "param"],
|
|
"strict": ["var", "param", "last-param"]
|
|
};
|
|
|
|
if (unused_opt) {
|
|
if (warnable_types[unused_opt] && warnable_types[unused_opt].indexOf(type) !== -1) {
|
|
if (!tkn.exported) {
|
|
warningAt("W098", line, chr, raw_name);
|
|
}
|
|
}
|
|
}
|
|
|
|
unuseds.push({
|
|
name: name,
|
|
line: line,
|
|
character: chr
|
|
});
|
|
};
|
|
|
|
var blockScope = function() {
|
|
var _current = {};
|
|
var _variables = [_current];
|
|
|
|
function _checkBlockLabels() {
|
|
for (var t in _current) {
|
|
var label = _current[t],
|
|
labelType = label["(type)"];
|
|
if (labelType === "unused" || (labelType === "const" && label["(unused)"])) {
|
|
if (state.option.unused) {
|
|
var tkn = _current[t]["(token)"];
|
|
// Don't report exported labels as unused
|
|
if (tkn.exported) {
|
|
continue;
|
|
}
|
|
|
|
warnUnused(t, tkn, "var");
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
function _getLabel(l) {
|
|
for (var i = _variables.length - 1 ; i >= 0; --i) {
|
|
if (_.has(_variables[i], l) && !_variables[i][l]["(shadowed)"]) {
|
|
return _variables[i];
|
|
}
|
|
}
|
|
}
|
|
|
|
return {
|
|
stack: function() {
|
|
_current = {};
|
|
_variables.push(_current);
|
|
},
|
|
|
|
unstack: function() {
|
|
_checkBlockLabels();
|
|
_variables.splice(_variables.length - 1, 1);
|
|
_current = _.last(_variables);
|
|
},
|
|
|
|
getlabel: _getLabel,
|
|
|
|
labeltype: function(l) {
|
|
// returns a labels type or null if not present
|
|
var block = _getLabel(l);
|
|
if (block) {
|
|
return block[l]["(type)"];
|
|
}
|
|
return null;
|
|
},
|
|
|
|
shadow: function(name) {
|
|
for (var i = _variables.length - 1; i >= 0; i--) {
|
|
if (_.has(_variables[i], name)) {
|
|
_variables[i][name]["(shadowed)"] = true;
|
|
}
|
|
}
|
|
},
|
|
|
|
unshadow: function(name) {
|
|
for (var i = _variables.length - 1; i >= 0; i--) {
|
|
if (_.has(_variables[i], name)) {
|
|
_variables[i][name]["(shadowed)"] = false;
|
|
}
|
|
}
|
|
},
|
|
|
|
atTop: function() {
|
|
return _variables.length === 1;
|
|
},
|
|
|
|
setExported: function(id) {
|
|
if (funct["(blockscope)"].atTop()) {
|
|
var item = _current[id];
|
|
if (item && item["(token)"]) {
|
|
item["(token)"].exported = true;
|
|
}
|
|
}
|
|
},
|
|
|
|
current: {
|
|
labeltype: function(t) {
|
|
if (_current[t]) {
|
|
return _current[t]["(type)"];
|
|
}
|
|
return null;
|
|
},
|
|
|
|
has: function(t) {
|
|
return _.has(_current, t);
|
|
},
|
|
|
|
add: function(t, type, tok) {
|
|
_current[t] = { "(type)" : type, "(token)": tok, "(shadowed)": false, "(unused)": true };
|
|
}
|
|
}
|
|
};
|
|
};
|
|
|
|
var escapeRegex = function(str) {
|
|
return str.replace(/[-\/\\^$*+?.()|[\]{}]/g, "\\$&");
|
|
};
|
|
|
|
// The actual JSHINT function itself.
|
|
var itself = function(s, o, g) {
|
|
var i, k, x, reIgnoreStr, reIgnore;
|
|
var optionKeys;
|
|
var newOptionObj = {};
|
|
var newIgnoredObj = {};
|
|
|
|
o = _.clone(o);
|
|
state.reset();
|
|
|
|
if (o && o.scope) {
|
|
JSHINT.scope = o.scope;
|
|
} else {
|
|
JSHINT.errors = [];
|
|
JSHINT.undefs = [];
|
|
JSHINT.internals = [];
|
|
JSHINT.blacklist = {};
|
|
JSHINT.scope = "(main)";
|
|
}
|
|
|
|
predefined = Object.create(null);
|
|
combine(predefined, vars.ecmaIdentifiers[3]);
|
|
combine(predefined, vars.reservedVars);
|
|
|
|
combine(predefined, g || {});
|
|
|
|
declared = Object.create(null);
|
|
exported = Object.create(null);
|
|
|
|
function each(obj, cb) {
|
|
if (!obj)
|
|
return;
|
|
|
|
if (!Array.isArray(obj) && typeof obj === "object")
|
|
obj = Object.keys(obj);
|
|
|
|
obj.forEach(cb);
|
|
}
|
|
|
|
if (o) {
|
|
each(o.predef || null, function(item) {
|
|
var slice, prop;
|
|
|
|
if (item[0] === "-") {
|
|
slice = item.slice(1);
|
|
JSHINT.blacklist[slice] = slice;
|
|
// remove from predefined if there
|
|
delete predefined[slice];
|
|
} else {
|
|
prop = Object.getOwnPropertyDescriptor(o.predef, item);
|
|
predefined[item] = prop ? prop.value : false;
|
|
}
|
|
});
|
|
|
|
each(o.exported || null, function(item) {
|
|
exported[item] = true;
|
|
});
|
|
|
|
delete o.predef;
|
|
delete o.exported;
|
|
|
|
optionKeys = Object.keys(o);
|
|
for (x = 0; x < optionKeys.length; x++) {
|
|
if (/^-W\d{3}$/g.test(optionKeys[x])) {
|
|
newIgnoredObj[optionKeys[x].slice(1)] = true;
|
|
} else {
|
|
var optionKey = optionKeys[x];
|
|
newOptionObj[optionKey] = o[optionKey];
|
|
if (optionKey === "es5") {
|
|
if (o[optionKey]) {
|
|
warning("I003");
|
|
}
|
|
}
|
|
|
|
if (optionKeys[x] === "newcap" && o[optionKey] === false)
|
|
newOptionObj["(explicitNewcap)"] = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
state.option = newOptionObj;
|
|
state.ignored = newIgnoredObj;
|
|
|
|
state.option.indent = state.option.indent || 4;
|
|
state.option.maxerr = state.option.maxerr || 50;
|
|
|
|
indent = 1;
|
|
global = Object.create(predefined);
|
|
scope = global;
|
|
|
|
funct = functor("(global)", null, scope, {
|
|
"(global)" : true,
|
|
"(blockscope)": blockScope(),
|
|
"(comparray)" : arrayComprehension(),
|
|
"(metrics)" : createMetrics(state.tokens.next)
|
|
});
|
|
|
|
functions = [funct];
|
|
urls = [];
|
|
stack = null;
|
|
member = {};
|
|
membersOnly = null;
|
|
implied = {};
|
|
inblock = false;
|
|
lookahead = [];
|
|
unuseds = [];
|
|
|
|
if (!isString(s) && !Array.isArray(s)) {
|
|
errorAt("E004", 0);
|
|
return false;
|
|
}
|
|
|
|
api = {
|
|
get isJSON() {
|
|
return state.jsonMode;
|
|
},
|
|
|
|
getOption: function(name) {
|
|
return state.option[name] || null;
|
|
},
|
|
|
|
getCache: function(name) {
|
|
return state.cache[name];
|
|
},
|
|
|
|
setCache: function(name, value) {
|
|
state.cache[name] = value;
|
|
},
|
|
|
|
warn: function(code, data) {
|
|
warningAt.apply(null, [ code, data.line, data.char ].concat(data.data));
|
|
},
|
|
|
|
on: function(names, listener) {
|
|
names.split(" ").forEach(function(name) {
|
|
emitter.on(name, listener);
|
|
}.bind(this));
|
|
}
|
|
};
|
|
|
|
emitter.removeAllListeners();
|
|
(extraModules || []).forEach(function(func) {
|
|
func(api);
|
|
});
|
|
|
|
state.tokens.prev = state.tokens.curr = state.tokens.next = state.syntax["(begin)"];
|
|
|
|
if (o && o.ignoreDelimiters) {
|
|
|
|
if (!Array.isArray(o.ignoreDelimiters)) {
|
|
o.ignoreDelimiters = [o.ignoreDelimiters];
|
|
}
|
|
|
|
o.ignoreDelimiters.forEach(function(delimiterPair) {
|
|
if (!delimiterPair.start || !delimiterPair.end)
|
|
return;
|
|
|
|
reIgnoreStr = escapeRegex(delimiterPair.start) +
|
|
"[\\s\\S]*?" +
|
|
escapeRegex(delimiterPair.end);
|
|
|
|
reIgnore = new RegExp(reIgnoreStr, "ig");
|
|
|
|
s = s.replace(reIgnore, function(match) {
|
|
return match.replace(/./g, " ");
|
|
});
|
|
});
|
|
}
|
|
|
|
lex = new Lexer(s);
|
|
|
|
lex.on("warning", function(ev) {
|
|
warningAt.apply(null, [ ev.code, ev.line, ev.character].concat(ev.data));
|
|
});
|
|
|
|
lex.on("error", function(ev) {
|
|
errorAt.apply(null, [ ev.code, ev.line, ev.character ].concat(ev.data));
|
|
});
|
|
|
|
lex.on("fatal", function(ev) {
|
|
quit("E041", ev.line, ev.from);
|
|
});
|
|
|
|
lex.on("Identifier", function(ev) {
|
|
emitter.emit("Identifier", ev);
|
|
});
|
|
|
|
lex.on("String", function(ev) {
|
|
emitter.emit("String", ev);
|
|
});
|
|
|
|
lex.on("Number", function(ev) {
|
|
emitter.emit("Number", ev);
|
|
});
|
|
|
|
lex.start();
|
|
|
|
// Check options
|
|
for (var name in o) {
|
|
if (_.has(o, name)) {
|
|
checkOption(name, state.tokens.curr);
|
|
}
|
|
}
|
|
|
|
assume();
|
|
|
|
// combine the passed globals after we've assumed all our options
|
|
combine(predefined, g || {});
|
|
|
|
//reset values
|
|
comma.first = true;
|
|
|
|
try {
|
|
advance();
|
|
switch (state.tokens.next.id) {
|
|
case "{":
|
|
case "[":
|
|
destructuringAssignOrJsonValue();
|
|
break;
|
|
default:
|
|
directives();
|
|
|
|
if (state.isStrict()) {
|
|
if (!state.option.globalstrict) {
|
|
if (!(state.option.module || state.option.node || state.option.phantom ||
|
|
state.option.browserify)) {
|
|
warning("W097", state.tokens.prev);
|
|
}
|
|
}
|
|
}
|
|
|
|
statements();
|
|
}
|
|
|
|
if (state.tokens.next.id !== "(end)") {
|
|
quit("E041", state.tokens.curr.line);
|
|
}
|
|
|
|
funct["(blockscope)"].unstack();
|
|
|
|
var markDefined = function(name, context) {
|
|
do {
|
|
if (typeof context[name] === "string") {
|
|
// JSHINT marks unused variables as 'unused' and
|
|
// unused function declaration as 'unction'. This
|
|
// code changes such instances back 'var' and
|
|
// 'closure' so that the code in JSHINT.data()
|
|
// doesn't think they're unused.
|
|
|
|
if (context[name] === "unused")
|
|
context[name] = "var";
|
|
else if (context[name] === "unction")
|
|
context[name] = "closure";
|
|
|
|
return true;
|
|
}
|
|
|
|
context = context["(context)"];
|
|
} while (context);
|
|
|
|
return false;
|
|
};
|
|
|
|
var clearImplied = function(name, line) {
|
|
if (!implied[name])
|
|
return;
|
|
|
|
var newImplied = [];
|
|
for (var i = 0; i < implied[name].length; i += 1) {
|
|
if (implied[name][i] !== line)
|
|
newImplied.push(implied[name][i]);
|
|
}
|
|
|
|
if (newImplied.length === 0)
|
|
delete implied[name];
|
|
else
|
|
implied[name] = newImplied;
|
|
};
|
|
|
|
var checkUnused = function(func, key) {
|
|
var type = func[key];
|
|
var tkn = func["(tokens)"][key];
|
|
|
|
if (key.charAt(0) === "(")
|
|
return;
|
|
|
|
if (type !== "unused" && type !== "unction")
|
|
return;
|
|
|
|
// Params are checked separately from other variables.
|
|
if (func["(params)"] && func["(params)"].indexOf(key) !== -1)
|
|
return;
|
|
|
|
// Variable is in global scope and defined as exported.
|
|
if (func["(global)"] && _.has(exported, key))
|
|
return;
|
|
|
|
warnUnused(key, tkn, "var");
|
|
};
|
|
|
|
// Check queued 'x is not defined' instances to see if they're still undefined.
|
|
for (i = 0; i < JSHINT.undefs.length; i += 1) {
|
|
k = JSHINT.undefs[i].slice(0);
|
|
|
|
if (markDefined(k[2].value, k[0]) || k[2].forgiveUndef) {
|
|
clearImplied(k[2].value, k[2].line);
|
|
} else if (state.option.undef) {
|
|
warning.apply(warning, k.slice(1));
|
|
}
|
|
}
|
|
|
|
functions.forEach(function(func) {
|
|
if (func["(unusedOption)"] === false) {
|
|
return;
|
|
}
|
|
|
|
for (var key in func) {
|
|
if (_.has(func, key)) {
|
|
checkUnused(func, key);
|
|
}
|
|
}
|
|
|
|
if (!func["(params)"])
|
|
return;
|
|
|
|
var params = func["(params)"].slice();
|
|
var param = params.pop();
|
|
var type, unused_opt;
|
|
|
|
while (param) {
|
|
type = func[param];
|
|
unused_opt = func["(unusedOption)"] || state.option.unused;
|
|
unused_opt = unused_opt === true ? "last-param" : unused_opt;
|
|
|
|
// 'undefined' is a special case for (function(window, undefined) { ... })();
|
|
// patterns.
|
|
|
|
if (param === "undefined")
|
|
return;
|
|
|
|
if (type === "unused" || type === "unction") {
|
|
warnUnused(param, func["(tokens)"][param], "param", func["(unusedOption)"]);
|
|
} else if (unused_opt === "last-param") {
|
|
return;
|
|
}
|
|
|
|
param = params.pop();
|
|
}
|
|
});
|
|
|
|
for (var key in declared) {
|
|
if (_.has(declared, key) && !_.has(global, key) && !_.has(exported, key)) {
|
|
warnUnused(key, declared[key], "var");
|
|
}
|
|
}
|
|
|
|
} catch (err) {
|
|
if (err && err.name === "JSHintError") {
|
|
var nt = state.tokens.next || {};
|
|
JSHINT.errors.push({
|
|
scope : "(main)",
|
|
raw : err.raw,
|
|
code : err.code,
|
|
reason : err.message,
|
|
line : err.line || nt.line,
|
|
character : err.character || nt.from
|
|
}, null);
|
|
} else {
|
|
throw err;
|
|
}
|
|
}
|
|
|
|
// Loop over the listed "internals", and check them as well.
|
|
|
|
if (JSHINT.scope === "(main)") {
|
|
o = o || {};
|
|
|
|
for (i = 0; i < JSHINT.internals.length; i += 1) {
|
|
k = JSHINT.internals[i];
|
|
o.scope = k.elem;
|
|
itself(k.value, o, g);
|
|
}
|
|
}
|
|
|
|
return JSHINT.errors.length === 0;
|
|
};
|
|
|
|
// Modules.
|
|
itself.addModule = function(func) {
|
|
extraModules.push(func);
|
|
};
|
|
|
|
itself.addModule(style.register);
|
|
|
|
// Data summary.
|
|
itself.data = function() {
|
|
var data = {
|
|
functions: [],
|
|
options: state.option
|
|
};
|
|
|
|
var implieds = [];
|
|
var members = [];
|
|
var fu, f, i, j, n, globals;
|
|
|
|
if (itself.errors.length) {
|
|
data.errors = itself.errors;
|
|
}
|
|
|
|
if (state.jsonMode) {
|
|
data.json = true;
|
|
}
|
|
|
|
for (n in implied) {
|
|
if (_.has(implied, n)) {
|
|
implieds.push({
|
|
name: n,
|
|
line: implied[n]
|
|
});
|
|
}
|
|
}
|
|
|
|
if (implieds.length > 0) {
|
|
data.implieds = implieds;
|
|
}
|
|
|
|
if (urls.length > 0) {
|
|
data.urls = urls;
|
|
}
|
|
|
|
globals = Object.keys(scope);
|
|
if (globals.length > 0) {
|
|
data.globals = globals;
|
|
}
|
|
|
|
for (i = 1; i < functions.length; i += 1) {
|
|
f = functions[i];
|
|
fu = {};
|
|
|
|
for (j = 0; j < functionicity.length; j += 1) {
|
|
fu[functionicity[j]] = [];
|
|
}
|
|
|
|
for (j = 0; j < functionicity.length; j += 1) {
|
|
if (fu[functionicity[j]].length === 0) {
|
|
delete fu[functionicity[j]];
|
|
}
|
|
}
|
|
|
|
fu.name = f["(name)"];
|
|
fu.param = f["(params)"];
|
|
fu.line = f["(line)"];
|
|
fu.character = f["(character)"];
|
|
fu.last = f["(last)"];
|
|
fu.lastcharacter = f["(lastcharacter)"];
|
|
|
|
fu.metrics = {
|
|
complexity: f["(metrics)"].ComplexityCount,
|
|
parameters: (f["(params)"] || []).length,
|
|
statements: f["(metrics)"].statementCount
|
|
};
|
|
|
|
data.functions.push(fu);
|
|
}
|
|
|
|
if (unuseds.length > 0) {
|
|
data.unused = unuseds;
|
|
}
|
|
|
|
members = [];
|
|
for (n in member) {
|
|
if (typeof member[n] === "number") {
|
|
data.member = member;
|
|
break;
|
|
}
|
|
}
|
|
|
|
return data;
|
|
};
|
|
|
|
itself.jshint = itself;
|
|
|
|
return itself;
|
|
}());
|
|
|
|
// Make JSHINT a Node module, if possible.
|
|
if (typeof exports === "object" && exports) {
|
|
exports.JSHINT = JSHINT;
|
|
}
|
|
|
|
},{"./lex.js":13,"./messages.js":14,"./options.js":16,"./reg.js":17,"./state.js":18,"./style.js":19,"./vars.js":20,"console-browserify":10,"events":5,"lodash":12}]},{},[]);
|
|
|
|
JSHINT = require('jshint').JSHINT;
|
|
if (typeof exports === 'object' && exports) exports.JSHINT = JSHINT;
|
|
}());
|
|
/*jshint boss: true, rhino: true, unused: true, undef: true, quotmark: double */
|
|
/*global JSHINT, readFully */
|
|
|
|
(function(args) {
|
|
"use strict";
|
|
|
|
var filenames = [];
|
|
var flags = {};
|
|
var opts = {};
|
|
var globals = {};
|
|
var retval = 0;
|
|
var readf = (typeof readFully === "function" ? readFully : readFile);
|
|
|
|
var optstr; // arg1=val1,arg2=val2,...
|
|
var predef; // global1=true,global2,global3,...
|
|
|
|
args.forEach(function(arg) {
|
|
if (arg.indexOf("--") === 0) {
|
|
// Configuration Flags might be boolean or will be split into name and value
|
|
if (arg.indexOf("=") > -1) {
|
|
var o = arg.split("=");
|
|
flags[o[0].slice(2)] = o[1];
|
|
} else {
|
|
flags[arg.slice(2)] = true;
|
|
}
|
|
|
|
return;
|
|
} else if (arg.indexOf("=") > -1) {
|
|
// usual rhino configuration, like "boss=true,browser=true"
|
|
if (!optstr) {
|
|
// First time it's the options.
|
|
optstr = arg;
|
|
} else {
|
|
predef = arg;
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
if (optstr) {
|
|
predef = arg;
|
|
return;
|
|
}
|
|
|
|
filenames.push(arg);
|
|
});
|
|
|
|
if (filenames.length === 0) {
|
|
print("Usage: jshint.js file.js");
|
|
quit(1);
|
|
}
|
|
|
|
// If a config flag has been provided, try and load that
|
|
if ("config" in flags) {
|
|
var cfgFileContent;
|
|
try {
|
|
cfgFileContent = readf(flags.config);
|
|
} catch (e) {
|
|
print("Could not read config file " + flags.config);
|
|
quit(1);
|
|
}
|
|
|
|
opts = JSON.parse(cfgFileContent);
|
|
}
|
|
|
|
if (optstr) {
|
|
optstr.split(",").forEach(function(arg) {
|
|
var o = arg.split("=");
|
|
if (o[0] === "indent") {
|
|
opts[o[0]] = parseInt(o[1], 10);
|
|
} else {
|
|
opts[o[0]] = (function(ov) {
|
|
switch (ov) {
|
|
case "true":
|
|
return true;
|
|
case "false":
|
|
return false;
|
|
default:
|
|
return ov;
|
|
}
|
|
}(o[1]));
|
|
}
|
|
});
|
|
}
|
|
|
|
globals = opts.globals || {};
|
|
delete(opts.globals);
|
|
|
|
if (predef) {
|
|
predef.split(",").forEach(function(arg) {
|
|
var global = arg.split("=");
|
|
globals[global[0]] = global[1] === "true" ? true : false;
|
|
});
|
|
}
|
|
|
|
filenames.forEach(function(name) {
|
|
var input = readf(name);
|
|
|
|
if (!input) {
|
|
print("jshint: Couldn't open file " + name);
|
|
quit(1);
|
|
}
|
|
|
|
if (!JSHINT(input, opts, globals)) {
|
|
for (var i = 0, err; err = JSHINT.errors[i]; i += 1) {
|
|
print(err.reason + " (" + name + ":" + err.line + ":" + err.character + ")");
|
|
print("> " + (err.evidence || "").replace(/^\s*(\S*(\s+\S+)*)\s*$/, "$1"));
|
|
print("");
|
|
}
|
|
retval = 2;
|
|
}
|
|
});
|
|
|
|
quit(retval);
|
|
}(arguments));
|