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codeql-action/node_modules/es-abstract/2016/SetIntegrityLevel.js
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'use strict'; | |
var GetIntrinsic = require('get-intrinsic'); | |
var $SyntaxError = GetIntrinsic('%SyntaxError%'); | |
var $TypeError = GetIntrinsic('%TypeError%'); | |
var $preventExtensions = GetIntrinsic('%Object.preventExtensions%', true); | |
var $gOPD = require('gopd'); | |
var $gOPN = GetIntrinsic('%Object.getOwnPropertyNames%', true); | |
var forEach = require('../helpers/forEach'); | |
var DefinePropertyOrThrow = require('./DefinePropertyOrThrow'); | |
var IsAccessorDescriptor = require('./IsAccessorDescriptor'); | |
var ToPropertyDescriptor = require('./ToPropertyDescriptor'); | |
var Type = require('./Type'); | |
// https://262.ecma-international.org/6.0/#sec-setintegritylevel | |
module.exports = function SetIntegrityLevel(O, level) { | |
if (Type(O) !== 'Object') { | |
throw new $TypeError('Assertion failed: Type(O) is not Object'); | |
} | |
if (level !== 'sealed' && level !== 'frozen') { | |
throw new $TypeError('Assertion failed: `level` must be `"sealed"` or `"frozen"`'); | |
} | |
if (!$preventExtensions) { | |
throw new $SyntaxError('SetIntegrityLevel requires native `Object.preventExtensions` support'); | |
} | |
var status = $preventExtensions(O); | |
if (!status) { | |
return false; | |
} | |
if (!$gOPN) { | |
throw new $SyntaxError('SetIntegrityLevel requires native `Object.getOwnPropertyNames` support'); | |
} | |
var theKeys = $gOPN(O); | |
if (level === 'sealed') { | |
forEach(theKeys, function (k) { | |
DefinePropertyOrThrow(O, k, { configurable: false }); | |
}); | |
} else if (level === 'frozen') { | |
forEach(theKeys, function (k) { | |
var currentDesc = $gOPD(O, k); | |
if (typeof currentDesc !== 'undefined') { | |
var desc; | |
if (IsAccessorDescriptor(ToPropertyDescriptor(currentDesc))) { | |
desc = { configurable: false }; | |
} else { | |
desc = { configurable: false, writable: false }; | |
} | |
DefinePropertyOrThrow(O, k, desc); | |
} | |
}); | |
} | |
return true; | |
}; |