| Alex Rudenko | bfb1124 | 2024-10-17 12:50:05 | [diff] [blame] | 1 | 'use strict'; |
| 2 | |
| 3 | var $defineProperty = require('es-define-property'); |
| 4 | |
| 5 | var hasPropertyDescriptors = function hasPropertyDescriptors() { |
| 6 | return !!$defineProperty; |
| 7 | }; |
| 8 | |
| 9 | hasPropertyDescriptors.hasArrayLengthDefineBug = function hasArrayLengthDefineBug() { |
| 10 | // node v0.6 has a bug where array lengths can be Set but not Defined |
| 11 | if (!$defineProperty) { |
| 12 | return null; |
| 13 | } |
| 14 | try { |
| 15 | return $defineProperty([], 'length', { value: 1 }).length !== 1; |
| 16 | } catch (e) { |
| 17 | // In Firefox 4-22, defining length on an array throws an exception. |
| 18 | return true; |
| 19 | } |
| 20 | }; |
| 21 | |
| 22 | module.exports = hasPropertyDescriptors; |
