mirror of https://github.com/tc39/test262.git
24 lines
731 B
JavaScript
24 lines
731 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: 21.2.3
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description: Subclassing the RegExp object
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info: >
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21.2.3 The RegExp Constructor
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...
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The RegExp constructor is designed to be subclassable. It may be used as the
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value of an extends clause of a class definition. Subclass constructors that
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intend to inherit the specified RegExp behaviour must include a super call to
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the RegExp constructor to create and initialize subclass instances with the
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necessary internal slots.
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---*/
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class RE extends RegExp {}
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var re = new RE(39);
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assert.sameValue(re.test('TC39'), true);
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assert.sameValue(re.test('42'), false);
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