| 'use strict'; |
| var global = require('./_global'); |
| var has = require('./_has'); |
| var cof = require('./_cof'); |
| var inheritIfRequired = require('./_inherit-if-required'); |
| var toPrimitive = require('./_to-primitive'); |
| var fails = require('./_fails'); |
| var gOPN = require('./_object-gopn').f; |
| var gOPD = require('./_object-gopd').f; |
| var dP = require('./_object-dp').f; |
| var $trim = require('./_string-trim').trim; |
| var NUMBER = 'Number'; |
| var $Number = global[NUMBER]; |
| var Base = $Number; |
| var proto = $Number.prototype; |
| // Opera ~12 has broken Object#toString |
| var BROKEN_COF = cof(require('./_object-create')(proto)) == NUMBER; |
| var TRIM = 'trim' in String.prototype; |
| |
| // 7.1.3 ToNumber(argument) |
| var toNumber = function (argument) { |
| var it = toPrimitive(argument, false); |
| if (typeof it == 'string' && it.length > 2) { |
| it = TRIM ? it.trim() : $trim(it, 3); |
| var first = it.charCodeAt(0); |
| var third, radix, maxCode; |
| if (first === 43 || first === 45) { |
| third = it.charCodeAt(2); |
| if (third === 88 || third === 120) return NaN; // Number('+0x1') should be NaN, old V8 fix |
| } else if (first === 48) { |
| switch (it.charCodeAt(1)) { |
| case 66: case 98: radix = 2; maxCode = 49; break; // fast equal /^0b[01]+$/i |
| case 79: case 111: radix = 8; maxCode = 55; break; // fast equal /^0o[0-7]+$/i |
| default: return +it; |
| } |
| for (var digits = it.slice(2), i = 0, l = digits.length, code; i < l; i++) { |
| code = digits.charCodeAt(i); |
| // parseInt parses a string to a first unavailable symbol |
| // but ToNumber should return NaN if a string contains unavailable symbols |
| if (code < 48 || code > maxCode) return NaN; |
| } return parseInt(digits, radix); |
| } |
| } return +it; |
| }; |
| |
| if (!$Number(' 0o1') || !$Number('0b1') || $Number('+0x1')) { |
| $Number = function Number(value) { |
| var it = arguments.length < 1 ? 0 : value; |
| var that = this; |
| return that instanceof $Number |
| // check on 1..constructor(foo) case |
| && (BROKEN_COF ? fails(function () { proto.valueOf.call(that); }) : cof(that) != NUMBER) |
| ? inheritIfRequired(new Base(toNumber(it)), that, $Number) : toNumber(it); |
| }; |
| for (var keys = require('./_descriptors') ? gOPN(Base) : ( |
| // ES3: |
| 'MAX_VALUE,MIN_VALUE,NaN,NEGATIVE_INFINITY,POSITIVE_INFINITY,' + |
| // ES6 (in case, if modules with ES6 Number statics required before): |
| 'EPSILON,isFinite,isInteger,isNaN,isSafeInteger,MAX_SAFE_INTEGER,' + |
| 'MIN_SAFE_INTEGER,parseFloat,parseInt,isInteger' |
| ).split(','), j = 0, key; keys.length > j; j++) { |
| if (has(Base, key = keys[j]) && !has($Number, key)) { |
| dP($Number, key, gOPD(Base, key)); |
| } |
| } |
| $Number.prototype = proto; |
| proto.constructor = $Number; |
| require('./_redefine')(global, NUMBER, $Number); |
| } |