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