 c177363a19
			
		
	
	c177363a19
	
	
	
		
			
			🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
		
			
				
	
	
		
			58 lines
		
	
	
		
			1.8 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			58 lines
		
	
	
		
			1.8 KiB
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
| 'use strict';
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| 
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| var GetIntrinsic = require('get-intrinsic');
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| 
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| var $SyntaxError = require('es-errors/syntax');
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| var $TypeError = require('es-errors/type');
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| var isObject = require('es-object-atoms/isObject');
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| var $gOPD = require('gopd');
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| var $preventExtensions = GetIntrinsic('%Object.preventExtensions%', true);
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| var $gOPN = GetIntrinsic('%Object.getOwnPropertyNames%', true);
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| 
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| var forEach = require('../helpers/forEach');
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| 
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| var DefinePropertyOrThrow = require('./DefinePropertyOrThrow');
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| var IsAccessorDescriptor = require('./IsAccessorDescriptor');
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| var ToPropertyDescriptor = require('./ToPropertyDescriptor');
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| 
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| // https://262.ecma-international.org/6.0/#sec-setintegritylevel
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| 
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| module.exports = function SetIntegrityLevel(O, level) {
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| 	if (!isObject(O)) {
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| 		throw new $TypeError('Assertion failed: Type(O) is not Object');
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| 	}
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| 	if (level !== 'sealed' && level !== 'frozen') {
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| 		throw new $TypeError('Assertion failed: `level` must be `"sealed"` or `"frozen"`');
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| 	}
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| 	if (!$preventExtensions) {
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| 		throw new $SyntaxError('SetIntegrityLevel requires native `Object.preventExtensions` support');
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| 	}
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| 	var status = $preventExtensions(O);
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| 	if (!status) {
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| 		return false;
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| 	}
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| 	if (!$gOPN) {
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| 		throw new $SyntaxError('SetIntegrityLevel requires native `Object.getOwnPropertyNames` support');
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| 	}
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| 	var theKeys = $gOPN(O);
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| 	if (level === 'sealed') {
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| 		forEach(theKeys, function (k) {
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| 			DefinePropertyOrThrow(O, k, { configurable: false });
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| 		});
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| 	} else if (level === 'frozen') {
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| 		forEach(theKeys, function (k) {
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| 			var currentDesc = $gOPD(O, k);
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| 			if (typeof currentDesc !== 'undefined') {
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| 				var desc;
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| 				if (IsAccessorDescriptor(ToPropertyDescriptor(currentDesc))) {
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| 					desc = { configurable: false };
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| 				} else {
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| 					desc = { configurable: false, writable: false };
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| 				}
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| 				DefinePropertyOrThrow(O, k, desc);
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| 			}
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| 		});
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| 	}
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| 	return true;
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| };
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