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 $gOPD = require('gopd'); |
| 4 | var $TypeError = require('es-errors/type'); |
Tim van der Lippe | fdbd42e | 2020-04-07 14:14:36 | [diff] [blame] | 5 | |
| 6 | var every = require('../helpers/every'); |
Nikolay Vitkov | d76576c | 2024-12-02 14:10:15 | [diff] [blame] | 7 | var OwnPropertyKeys = require('../helpers/OwnPropertyKeys'); |
Tim van der Lippe | fdbd42e | 2020-04-07 14:14:36 | [diff] [blame] | 8 | |
| 9 | var IsDataDescriptor = require('./IsDataDescriptor'); |
| 10 | var IsExtensible = require('./IsExtensible'); |
| 11 | var ToPropertyDescriptor = require('./ToPropertyDescriptor'); |
| 12 | var Type = require('./Type'); |
| 13 | |
Nikolay Vitkov | d76576c | 2024-12-02 14:10:15 | [diff] [blame] | 14 | // https://262.ecma-international.org/6.0/#sec-testintegritylevel |
Tim van der Lippe | fdbd42e | 2020-04-07 14:14:36 | [diff] [blame] | 15 | |
| 16 | module.exports = function TestIntegrityLevel(O, level) { |
| 17 | if (Type(O) !== 'Object') { |
| 18 | throw new $TypeError('Assertion failed: Type(O) is not Object'); |
| 19 | } |
| 20 | if (level !== 'sealed' && level !== 'frozen') { |
| 21 | throw new $TypeError('Assertion failed: `level` must be `"sealed"` or `"frozen"`'); |
| 22 | } |
| 23 | var status = IsExtensible(O); |
| 24 | if (status) { |
| 25 | return false; |
| 26 | } |
Nikolay Vitkov | d76576c | 2024-12-02 14:10:15 | [diff] [blame] | 27 | var theKeys = OwnPropertyKeys(O); |
Tim van der Lippe | fdbd42e | 2020-04-07 14:14:36 | [diff] [blame] | 28 | return theKeys.length === 0 || every(theKeys, function (k) { |
| 29 | var currentDesc = $gOPD(O, k); |
| 30 | if (typeof currentDesc !== 'undefined') { |
| 31 | if (currentDesc.configurable) { |
| 32 | return false; |
| 33 | } |
| 34 | if (level === 'frozen' && IsDataDescriptor(ToPropertyDescriptor(currentDesc)) && currentDesc.writable) { |
| 35 | return false; |
| 36 | } |
| 37 | } |
| 38 | return true; |
| 39 | }); |
| 40 | }; |