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			33 lines
		
	
	
		
			831 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
			
		
		
	
	
			33 lines
		
	
	
		
			831 B
		
	
	
	
		
			JavaScript
		
	
	
	
	
	
// Copyright (C) 2016 the V8 project authors. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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es6id: 23.2.1
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description: Super need to be called to initialize internals
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info: |
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  23.2.1 The Set Constructor
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  ...
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  The Set constructor is designed to be subclassable. It may be used as the
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  value in an extends clause of a class definition. Subclass constructors that
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  intend to inherit the specified Set behaviour must include a super call to the
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  Set constructor to create and initialize the subclass instance with the
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  internal state necessary to support the Set.prototype built-in methods.
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---*/
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class S1 extends Set {
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  constructor() {}
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}
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assert.throws(ReferenceError, function() {
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  new S1();
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});
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class S2 extends Set {
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  constructor() {
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    super();
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  }
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}
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new S2();
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