| 'use strict'; |
| |
| var GetIntrinsic = require('get-intrinsic'); |
| |
| var $RegExp = GetIntrinsic('%RegExp%'); |
| var $TypeError = require('es-errors/type'); |
| var $parseInteger = GetIntrinsic('%parseInt%'); |
| |
| var callBound = require('call-bound'); |
| var regexTester = require('safe-regex-test'); |
| |
| var $strSlice = callBound('String.prototype.slice'); |
| var isBinary = regexTester(/^0b[01]+$/i); |
| var isOctal = regexTester(/^0o[0-7]+$/i); |
| var isInvalidHexLiteral = regexTester(/^[-+]0x[0-9a-f]+$/i); |
| var nonWS = ['\u0085', '\u200b', '\ufffe'].join(''); |
| var nonWSregex = new $RegExp('[' + nonWS + ']', 'g'); |
| var hasNonWS = regexTester(nonWSregex); |
| |
| var $trim = require('string.prototype.trim'); |
| |
| // https://262.ecma-international.org/13.0/#sec-stringtonumber |
| |
| module.exports = function StringToNumber(argument) { |
| if (typeof argument !== 'string') { |
| throw new $TypeError('Assertion failed: `argument` is not a String'); |
| } |
| if (isBinary(argument)) { |
| return +$parseInteger($strSlice(argument, 2), 2); |
| } |
| if (isOctal(argument)) { |
| return +$parseInteger($strSlice(argument, 2), 8); |
| } |
| if (hasNonWS(argument) || isInvalidHexLiteral(argument)) { |
| return NaN; |
| } |
| var trimmed = $trim(argument); |
| if (trimmed !== argument) { |
| return StringToNumber(trimmed); |
| } |
| return +argument; |
| }; |