35 lines
929 B
JavaScript
35 lines
929 B
JavaScript
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'use strict';
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var ToPrimitive = require('./ToPrimitive');
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var callBound = require('call-bound');
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var $replace = callBound('String.prototype.replace');
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var safeRegexTester = require('safe-regex-test');
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var isNonDecimal = safeRegexTester(/^0[ob]|^[+-]0x/);
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var $Number = Number;
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// http://262.ecma-international.org/5.1/#sec-9.3
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module.exports = function ToNumber(value) {
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var prim = ToPrimitive(value, $Number);
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if (typeof prim !== 'string') {
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return $Number(prim);
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}
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var trimmed = $replace(
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prim,
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// eslint-disable-next-line no-control-regex
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/^[ \t\x0b\f\xa0\ufeff\n\r\u2028\u2029\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u0085]+|[ \t\x0b\f\xa0\ufeff\n\r\u2028\u2029\u1680\u180e\u2000\u2001\u2002\u2003\u2004\u2005\u2006\u2007\u2008\u2009\u200a\u202f\u205f\u3000\u0085]+$/g,
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''
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);
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if (isNonDecimal(trimmed)) {
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return NaN;
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}
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return +trimmed;
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};
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