Tim van der Lippe | fdbd42e | 2020-04-07 14:14:36 | [diff] [blame] | 1 | 'use strict'; |
| 2 | |
Tim van der Lippe | 2c89197 | 2021-07-29 15:22:50 | [diff] [blame] | 3 | var GetIntrinsic = require('get-intrinsic'); |
Tim van der Lippe | fdbd42e | 2020-04-07 14:14:36 | [diff] [blame] | 4 | |
Nikolay Vitkov | d76576c | 2024-12-02 14:10:15 | [diff] [blame] | 5 | var $SyntaxError = require('es-errors/syntax'); |
| 6 | var $TypeError = require('es-errors/type'); |
| 7 | var $preventExtensions = GetIntrinsic('%Object.preventExtensions%', true); |
| 8 | var $gOPD = require('gopd'); |
| 9 | var $gOPN = GetIntrinsic('%Object.getOwnPropertyNames%', true); |
Tim van der Lippe | fdbd42e | 2020-04-07 14:14:36 | [diff] [blame] | 10 | |
| 11 | var forEach = require('../helpers/forEach'); |
| 12 | |
| 13 | var DefinePropertyOrThrow = require('./DefinePropertyOrThrow'); |
| 14 | var IsAccessorDescriptor = require('./IsAccessorDescriptor'); |
| 15 | var ToPropertyDescriptor = require('./ToPropertyDescriptor'); |
| 16 | var Type = require('./Type'); |
| 17 | |
Nikolay Vitkov | d76576c | 2024-12-02 14:10:15 | [diff] [blame] | 18 | // https://262.ecma-international.org/6.0/#sec-setintegritylevel |
Tim van der Lippe | fdbd42e | 2020-04-07 14:14:36 | [diff] [blame] | 19 | |
| 20 | module.exports = function SetIntegrityLevel(O, level) { |
| 21 | if (Type(O) !== 'Object') { |
| 22 | throw new $TypeError('Assertion failed: Type(O) is not Object'); |
| 23 | } |
| 24 | if (level !== 'sealed' && level !== 'frozen') { |
| 25 | throw new $TypeError('Assertion failed: `level` must be `"sealed"` or `"frozen"`'); |
| 26 | } |
| 27 | if (!$preventExtensions) { |
| 28 | throw new $SyntaxError('SetIntegrityLevel requires native `Object.preventExtensions` support'); |
| 29 | } |
| 30 | var status = $preventExtensions(O); |
| 31 | if (!status) { |
| 32 | return false; |
| 33 | } |
| 34 | if (!$gOPN) { |
| 35 | throw new $SyntaxError('SetIntegrityLevel requires native `Object.getOwnPropertyNames` support'); |
| 36 | } |
| 37 | var theKeys = $gOPN(O); |
| 38 | if (level === 'sealed') { |
| 39 | forEach(theKeys, function (k) { |
| 40 | DefinePropertyOrThrow(O, k, { configurable: false }); |
| 41 | }); |
| 42 | } else if (level === 'frozen') { |
| 43 | forEach(theKeys, function (k) { |
| 44 | var currentDesc = $gOPD(O, k); |
| 45 | if (typeof currentDesc !== 'undefined') { |
| 46 | var desc; |
| 47 | if (IsAccessorDescriptor(ToPropertyDescriptor(currentDesc))) { |
| 48 | desc = { configurable: false }; |
| 49 | } else { |
| 50 | desc = { configurable: false, writable: false }; |
| 51 | } |
| 52 | DefinePropertyOrThrow(O, k, desc); |
| 53 | } |
| 54 | }); |
| 55 | } |
| 56 | return true; |
| 57 | }; |