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- 'use strict';
- var GetIntrinsic = require('get-intrinsic');
- var $Number = GetIntrinsic('%Number%');
- var $RegExp = GetIntrinsic('%RegExp%');
- var $TypeError = GetIntrinsic('%TypeError%');
- var $parseInteger = GetIntrinsic('%parseInt%');
- var callBound = require('call-bind/callBound');
- 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');
- var Type = require('./Type');
- // https://262.ecma-international.org/13.0/#sec-stringtonumber
- module.exports = function StringToNumber(argument) {
- if (Type(argument) !== 'String') {
- throw new $TypeError('Assertion failed: `argument` is not a String');
- }
- if (isBinary(argument)) {
- return $Number($parseInteger($strSlice(argument, 2), 2));
- }
- if (isOctal(argument)) {
- return $Number($parseInteger($strSlice(argument, 2), 8));
- }
- if (hasNonWS(argument) || isInvalidHexLiteral(argument)) {
- return NaN;
- }
- var trimmed = $trim(argument);
- if (trimmed !== argument) {
- return StringToNumber(trimmed);
- }
- return $Number(argument);
- };
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