| Tim van der Lippe | fdbd42e | 2020-04-07 14:14:36 | [diff] [blame] | 1 | 'use strict'; |
| 2 | |
| Nikolay Vitkov | d76576c | 2024-12-02 14:10:15 | [diff] [blame] | 3 | var $TypeError = require('es-errors/type'); |
| Tim van der Lippe | fdbd42e | 2020-04-07 14:14:36 | [diff] [blame] | 4 | |
| 5 | var SameValue = require('./SameValue'); |
| 6 | var ToNumber = require('./ToNumber'); |
| 7 | var ToString = require('./ToString'); |
| Tim van der Lippe | fdbd42e | 2020-04-07 14:14:36 | [diff] [blame] | 8 | |
| Nikolay Vitkov | d76576c | 2024-12-02 14:10:15 | [diff] [blame] | 9 | // https://262.ecma-international.org/6.0/#sec-canonicalnumericindexstring |
| Tim van der Lippe | fdbd42e | 2020-04-07 14:14:36 | [diff] [blame] | 10 | |
| 11 | module.exports = function CanonicalNumericIndexString(argument) { |
| Nikolay Vitkov | d76576c | 2024-12-02 14:10:15 | [diff] [blame] | 12 | if (typeof argument !== 'string') { |
| Tim van der Lippe | fdbd42e | 2020-04-07 14:14:36 | [diff] [blame] | 13 | throw new $TypeError('Assertion failed: `argument` must be a String'); |
| 14 | } |
| 15 | if (argument === '-0') { return -0; } |
| 16 | var n = ToNumber(argument); |
| 17 | if (SameValue(ToString(n), argument)) { return n; } |
| 18 | return void 0; |
| 19 | }; |
