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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