hexo/node_modules/es-abstract/5/ToNumber.js

33 lines
1.0 KiB
JavaScript

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