mirror of https://github.com/tc39/test262.git
21 lines
796 B
JavaScript
21 lines
796 B
JavaScript
// Copyright 2019 Ron Buckton. 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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description: Test the groups object of indices with matched and unmatched named captures.
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includes: [compareArray.js]
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esid: sec-makeindicesarray
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features: [regexp-named-groups, regexp-match-indices]
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info: |
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MakeIndicesArray ( S, indices, groupNames, hasGroups )
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11. For each integer _i_ such that _i_ >= 0 and _i_ < _n_, do
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e. If _i_ > 0 and _groupNames_[_i_ - 1] is not *undefined*, then
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i. Perform ! CreateDataProperty(_groups_, _groupNames_[_i_ - 1], _matchIndicesArray_).
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---*/
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const re = /(?<a>a).|(?<x>x)/d;
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const result = re.exec("ab").indices;
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assert.compareArray([0, 1], result.groups.a);
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assert.sameValue(undefined, result.groups.x);
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