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authorruki <waruqi@gmail.com>2018-11-08 00:38:48 +0800
committerruki <waruqi@gmail.com>2018-11-07 21:53:09 +0800
commit26105034da4fcce7ac883c899d781f016559310d (patch)
treec459a5dc4e3aa0972d9919033ece511ce76dd129 /node_modules/core-js/modules/es6.number.constructor.js
parent2c77f00f1a7ecb6c8192f9c16d3b2001b254a107 (diff)
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diff --git a/node_modules/core-js/modules/es6.number.constructor.js b/node_modules/core-js/modules/es6.number.constructor.js
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+'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);
+}