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Fix es.regexp.constructor - handleNCG - consider captured groups inside non-capturing groups #1352

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Merged
merged 4 commits into from
Jul 2, 2024
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Fix es.regexp.constructor - handleNCG - consider captured groups inside non-capturing groups #1352

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b01a420
fix - consider captured groups inside non-capturing groups
Jul 1, 2024
60f0542
fix es.regexp.constructor - consider captured groups inside non-captu…
Jul 1, 2024
fdbd24b
Merge branch 'master' of https://github.com/Ulop/core-js
Jul 2, 2024
f3b0335
fix eslint warnings
Jul 2, 2024
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2 changes: 1 addition & 1 deletion packages/core-js/modules/es.regexp.constructor.js
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Original file line number Diff line number Diff line change
Expand Up @@ -98,9 +98,9 @@ var handleNCG = function (string) {
if (exec(IS_NCG, stringSlice(string, index + 1))) {
index += 2;
ncg = true;
groupid++;
}
result += chr;
groupid++;
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@zloirock zloirock Jul 1, 2024 •
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It will break cases like

RegExp('foo:(?<foo>\\w+),bar:(\\w+),buz:(?<buz>\\w+)').exec('foo:abc,bar:def,buz:ghi').groups.buz

since here is a non-named group.

Could you fix it and add a couple of cases like that to the tests?

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@Ulop Ulop Jul 2, 2024

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Yes, you are right. Changes like these really break some cases.

I added an additional check to a non-capturing group after '(' character and revert the previous changes.
Also extended regexp constructor test with your example.

continue;
case chr === '>' && ncg:
if (groupname === '' || hasOwn(names, groupname)) {
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4 changes: 4 additions & 0 deletions tests/unit-global/es.regexp.constructor.js
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Expand Up @@ -84,6 +84,10 @@ if (DESCRIPTORS) {
const { groups } = RegExp('foo:(?<foo>\\w+),bar:(?<bar>\\w+)').exec('foo:abc,bar:def');
assert.same(getPrototypeOf(groups), null, 'null prototype');
assert.deepEqual(groups, { foo: 'abc', bar: 'def' }, 'NCG #3');
const { groups: nonCaptured, length } = RegExp('foo:(?:value=(?<foo>\\w+)),bar:(?:value=(?<bar>\\w+))').exec('foo:value=abc,bar:value=def');
assert.deepEqual(nonCaptured, { foo: 'abc', bar: 'def' }, 'NCG #4');
assert.same(length, 3, 'incorrect number of matched entries #1')

// fails in Safari
// assert.same(Object.getPrototypeOf(groups), null, 'NCG #4');
assert.same('foo:abc,bar:def'.replace(RegExp('foo:(?<foo>\\w+),bar:(?<bar>\\w+)'), '$<bar>,$<foo>'), 'def,abc', 'replace #1');
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