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node_modules/es-abstract/2022/TestIntegrityLevel.js
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drndsv
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14 апр 2025, 22:53
14 апр 2025, 22:53
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'use strict'; var GetIntrinsic = require('get-intrinsic'); var $gOPD = require('gopd'); var $TypeError = GetIntrinsic('%TypeError%'); var every = require('../helpers/every'); var OwnPropertyKeys = require('../helpers/OwnPropertyKeys'); var IsDataDescriptor = require('./IsDataDescriptor'); var IsExtensible = require('./IsExtensible'); var ToPropertyDescriptor = require('./ToPropertyDescriptor'); var Type = require('./Type'); // https://262.ecma-international.org/6.0/#sec-testintegritylevel module.exports = function TestIntegrityLevel(O, level) { if (Type(O) !== 'Object') { throw new $TypeError('Assertion failed: Type(O) is not Object'); } if (level !== 'sealed' && level !== 'frozen') { throw new $TypeError('Assertion failed: `level` must be `"sealed"` or `"frozen"`'); } var status = IsExtensible(O); if (status) { return false; } var theKeys = OwnPropertyKeys(O); return theKeys.length === 0 || every(theKeys, function (k) { var currentDesc = $gOPD(O, k); if (typeof currentDesc !== 'undefined') { if (currentDesc.configurable) { return false; } if (level === 'frozen' && IsDataDescriptor(ToPropertyDescriptor(currentDesc)) && currentDesc.writable) { return false; } } return true; }); };