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			17 lines
		
	
	
		
			419 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			17 lines
		
	
	
		
			419 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
| // Copyright 2017 the V8 project authors. All rights reserved.
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| // Use of this source code is governed by a BSD-style license that can be
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| // found in the LICENSE file.
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| 
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| // Flags: --allow-natives-syntax
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| 
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| class A {}
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| class B {}
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| 
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| A.__proto__ = new Proxy(A.__proto__, {
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|   get: function (target, property, receiver) {
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|     if (property === Symbol.hasInstance) throw new B;
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|   }
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| });
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| 
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| assertThrows(() => (new A) instanceof A, B);
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