[d565449] | 1 | 'use strict';
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| 2 |
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| 3 | var GetIntrinsic = require('get-intrinsic');
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| 4 |
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| 5 | var $SyntaxError = require('es-errors/syntax');
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| 6 | var $TypeError = require('es-errors/type');
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| 7 | var $preventExtensions = GetIntrinsic('%Object.preventExtensions%', true);
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| 8 | var $gOPD = require('gopd');
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| 9 | var $gOPN = GetIntrinsic('%Object.getOwnPropertyNames%', true);
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| 10 |
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| 11 | var forEach = require('../helpers/forEach');
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| 12 |
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| 13 | var DefinePropertyOrThrow = require('./DefinePropertyOrThrow');
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| 14 | var IsAccessorDescriptor = require('./IsAccessorDescriptor');
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| 15 | var ToPropertyDescriptor = require('./ToPropertyDescriptor');
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| 16 | var Type = require('./Type');
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| 17 |
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| 18 | // https://262.ecma-international.org/6.0/#sec-setintegritylevel
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| 19 |
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| 20 | module.exports = function SetIntegrityLevel(O, level) {
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| 21 | if (Type(O) !== 'Object') {
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| 22 | throw new $TypeError('Assertion failed: Type(O) is not Object');
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| 23 | }
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| 24 | if (level !== 'sealed' && level !== 'frozen') {
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| 25 | throw new $TypeError('Assertion failed: `level` must be `"sealed"` or `"frozen"`');
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| 26 | }
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| 27 | if (!$preventExtensions) {
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| 28 | throw new $SyntaxError('SetIntegrityLevel requires native `Object.preventExtensions` support');
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| 29 | }
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| 30 | var status = $preventExtensions(O);
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| 31 | if (!status) {
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| 32 | return false;
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| 33 | }
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| 34 | if (!$gOPN) {
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| 35 | throw new $SyntaxError('SetIntegrityLevel requires native `Object.getOwnPropertyNames` support');
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| 36 | }
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| 37 | var theKeys = $gOPN(O);
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| 38 | if (level === 'sealed') {
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| 39 | forEach(theKeys, function (k) {
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| 40 | DefinePropertyOrThrow(O, k, { configurable: false });
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| 41 | });
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| 42 | } else if (level === 'frozen') {
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| 43 | forEach(theKeys, function (k) {
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| 44 | var currentDesc = $gOPD(O, k);
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| 45 | if (typeof currentDesc !== 'undefined') {
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| 46 | var desc;
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| 47 | if (IsAccessorDescriptor(ToPropertyDescriptor(currentDesc))) {
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| 48 | desc = { configurable: false };
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| 49 | } else {
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| 50 | desc = { configurable: false, writable: false };
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| 51 | }
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| 52 | DefinePropertyOrThrow(O, k, desc);
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| 53 | }
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| 54 | });
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| 55 | }
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| 56 | return true;
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| 57 | };
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