15 lines
382 B
JavaScript
15 lines
382 B
JavaScript
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// Copyright 2018 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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class MyRegExp extends RegExp {
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exec(str) {
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const r = super.exec.call(this, str);
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if (r) r[0] = 0;
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return r;
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}
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}
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const result = 'a'.match(new MyRegExp('.', 'g'));
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assertArrayEquals(result, ['0']);
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