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37 lines
1.0 KiB
JavaScript
37 lines
1.0 KiB
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: 19.5.1.1
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description: >
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A new instance has the message property if created with a parameter
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info: |
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19.5.1.1 Error ( message )
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...
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4. If message is not undefined, then
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a. Let msg be ToString(message).
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b. ReturnIfAbrupt(msg).
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c. Let msgDesc be the PropertyDescriptor{[[Value]]: msg, [[Writable]]: true,
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[[Enumerable]]: false, [[Configurable]]: true}.
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d. Let status be DefinePropertyOrThrow(O, "message", msgDesc).
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...
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includes: [propertyHelper.js]
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---*/
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class Err extends Error {}
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Err.prototype.message = 'custom-error';
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var err1 = new Err('foo 42');
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assert.sameValue(err1.message, 'foo 42');
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assert(err1.hasOwnProperty('message'));
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verifyWritable(err1, 'message');
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verifyNotEnumerable(err1, 'message');
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verifyConfigurable(err1, 'message');
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var err2 = new Err();
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assert.sameValue(err2.hasOwnProperty('message'), false);
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assert.sameValue(err2.message, 'custom-error');
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