Sha256: 8eabbfb44bab74eca2d08de23e08028b93a4b5be4045e365561ed15718d0be24
Contents?: true
Size: 1.1 KB
Versions: 17
Compression:
Stored size: 1.1 KB
Contents
'use strict';
var $ = require('../internals/export');
var toInteger = require('../internals/to-integer');
var parseInt = require('../internals/number-parse-int');
var INVALID_NUMBER_REPRESENTATION = 'Invalid number representation';
var INVALID_RADIX = 'Invalid radix';
var valid = /^[\da-z]+$/;
// `Number.fromString` method
// https://github.com/tc39/proposal-number-fromstring
$({ target: 'Number', stat: true }, {
fromString: function fromString(string, radix) {
var sign = 1;
var R, mathNum;
if (typeof string != 'string') throw TypeError(INVALID_NUMBER_REPRESENTATION);
if (!string.length) throw SyntaxError(INVALID_NUMBER_REPRESENTATION);
if (string.charAt(0) == '-') {
sign = -1;
string = string.slice(1);
if (!string.length) throw SyntaxError(INVALID_NUMBER_REPRESENTATION);
}
R = radix === undefined ? 10 : toInteger(radix);
if (R < 2 || R > 36) throw RangeError(INVALID_RADIX);
if (!valid.test(string) || (mathNum = parseInt(string, R)).toString(R) !== string) {
throw SyntaxError(INVALID_NUMBER_REPRESENTATION);
}
return sign * mathNum;
}
});
Version data entries
17 entries across 16 versions & 6 rubygems