mirror of https://github.com/tc39/test262.git
19 lines
615 B
JavaScript
19 lines
615 B
JavaScript
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// Copyright 2022 Igalia, S.L. 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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esid: sec-regexp-pattern-flags
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description: Runtime parsing of syntax for duplicate named capturing groups
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features: [regexp-duplicate-named-groups]
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---*/
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assert.throws(
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SyntaxError,
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() => new RegExp("(?<x>a)(?<x>b)"),
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"Duplicate named capturing groups in the same alternative do not parse"
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);
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let source = "(?<x>a)|(?<x>b)";
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let parsed = new RegExp(source);
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assert.sameValue(parsed.source, source, "Duplicate named capturing groups in separate alternatives parse correctly");
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