refactor(react-router): Match component performance w/ single router state select

[Sheraff]

In the <Match> component, we need both

• the id of the match itself
• the id of the parent of the match

For both, we need to iterate the matches array. We can do this in a single iteration, and reduce the use of useRouterState from 3 calls to 1.

before

after

Summary by CodeRabbit

• Refactor
  • Optimized route matching performance through improved algorithm efficiency.
  • Consolidated internal state management to reduce redundant operations.

_{✏️ Tip: You can customize this high-level summary in your review settings.}

[nx-cloud]

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---

☁️ Nx Cloud last updated this comment at 2026-01-25 22:32:02 UTC

[coderabbitai]

📝 Walkthrough

Walkthrough

The change consolidates match state selection in Match.tsx by computing matchIndex via findIndex and deriving both match and additional fields (resetKey, parentRouteId) from a single consolidated matchState selector, replacing previous linear search and separate selectors.

Changes

Cohort / File(s)	Summary
State selection optimization packages/react-router/src/Match.tsx	Replaced linear search with index-based approach for match lookup; consolidated resetKey and parentRouteId into single matchState selector; removed redundant local selectors and updated downstream usages to reference consolidated state fields

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Suggested reviewers

• schiller-manuel

Poem

🐰 A match once searched from end to end,
Now finds its index, swift as wind,
State consolidated, clean and neat,
One selector makes it sweet! ✨

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: consolidating multiple state selectors into a single router state selection in the Match component for performance improvement.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing touches

• 📝 Generate docstrings

---

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[pkg-pr-new]

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commit: 4680d80