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23 lines
746 B
JavaScript
23 lines
746 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: 19.5.1
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description: Subclassing the Error object
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info: |
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19.5.1 The Error Constructor
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...
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The Error constructor is designed to be subclassable. It may be used as the
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alue of an extends clause of a class definition. Subclass constructors that
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intend to inherit the specified Error behaviour must include a super call to
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the Error constructor to create and initialize subclass instances with a
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[[ErrorData]] internal slot.
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---*/
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class CustomError extends Error {}
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var err = new CustomError('foo 42');
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assert.sameValue(err.message, 'foo 42');
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assert.sameValue(err.name, 'Error');
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