refactor: simplify parseListConfig
#16241
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Removes a polynomial-time regular expression
mdjermanovic
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This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | [eslint](https://eslint.org) ([source](https://github.com/eslint/eslint)) | devDependencies | minor | [`8.22.0` -> `8.23.0`](https://renovatebot.com/diffs/npm/eslint/8.22.0/8.23.0) | --- ### Release Notes <details> <summary>eslint/eslint</summary> ### [`v8.23.0`](https://github.com/eslint/eslint/releases/tag/v8.23.0) [Compare Source](eslint/eslint@v8.22.0...v8.23.0) #### Features - [`3e5839e`](eslint/eslint@3e5839e) feat: Enable eslint.config.js lookup from CLI ([#​16235](eslint/eslint#16235)) (Nicholas C. Zakas) - [`30b1a2d`](eslint/eslint@30b1a2d) feat: add `allowEmptyCase` option to no-fallthrough rule ([#​15887](eslint/eslint#15887)) (Amaresh S M) - [`43f03aa`](eslint/eslint@43f03aa) feat: no-warning-comments support comments with decoration ([#​16120](eslint/eslint#16120)) (Lachlan Hunt) #### Documentation - [`b1918da`](eslint/eslint@b1918da) docs: package.json conventions ([#​16206](eslint/eslint#16206)) (Patrick McElhaney) - [`0e03c33`](eslint/eslint@0e03c33) docs: remove word immediately ([#​16217](eslint/eslint#16217)) (Strek) - [`c6790db`](eslint/eslint@c6790db) docs: add anchor link for "migrating from jscs" ([#​16207](eslint/eslint#16207)) (Percy Ma) - [`7137344`](eslint/eslint@7137344) docs: auto-generation edit link ([#​16213](eslint/eslint#16213)) (Percy Ma) #### Chores - [`2e004ab`](eslint/eslint@2e004ab) chore: upgrade [@​eslint/eslintrc](https://github.com/eslint/eslintrc)[@​1](https://github.com/1).3.1 ([#​16249](eslint/eslint#16249)) (Milos Djermanovic) - [`d35fbbe`](eslint/eslint@d35fbbe) chore: Upgrade to espree@9.4.0 ([#​16243](eslint/eslint#16243)) (Milos Djermanovic) - [`ed26229`](eslint/eslint@ed26229) test: add no-extra-parens tests with rest properties ([#​16236](eslint/eslint#16236)) (Milos Djermanovic) - [`deaf69f`](eslint/eslint@deaf69f) chore: fix off-by-one `min-width: 1023px` media queries ([#​15974](eslint/eslint#15974)) (Milos Djermanovic) - [`63dec9f`](eslint/eslint@63dec9f) refactor: simplify `parseListConfig` ([#​16241](eslint/eslint#16241)) (Milos Djermanovic) </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, click this checkbox. --- This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzMi4xNzcuMSIsInVwZGF0ZWRJblZlciI6IjMyLjE4MS4wIn0=--> Co-authored-by: cabr2-bot <cabr2.help@gmail.com> Reviewed-on: https://codeberg.org/Calciumdibromid/CaBr2/pulls/1527 Reviewed-by: Epsilon_02 <epsilon_02@noreply.codeberg.org> Co-authored-by: Calciumdibromid Bot <cabr2_bot@noreply.codeberg.org> Co-committed-by: Calciumdibromid Bot <cabr2_bot@noreply.codeberg.org>
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Prerequisites checklist
What is the purpose of this pull request? (put an "X" next to an item)
[ ] Documentation update
[ ] Bug fix (template)
[ ] New rule (template)
[ ] Changes an existing rule (template)
[ ] Add autofix to a rule
[ ] Add a CLI option
[ ] Add something to the core
[x] Other, please explain:
Simplifies function
parseListConfigin the config comment parser by removing a step that removes whitespace around commas before splitting the string. This removes a polynomial-time regular expression and therefore fixes a problem reported by CodeQL on recent PRs (see #16235 and #16236). The reported CodeQL problem is correct, although it can only be observed in extreme edge cases.What changes did you make? (Give an overview)
Refactored the
parseListConfigfunction.Is there anything you'd like reviewers to focus on?
Alternatively, we could keep this step and just fix the regex by adding a lookbehind (e.g.,
/(?<!\s)\s*,\s*/gu) but I don't think this step had any benefits in terms of performance anyway.