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fix(react-router): useMatchRoute w/ React Compiler - #8015

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fix-react-router-use-match-route-react-compiler
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fix(react-router): useMatchRoute w/ React Compiler#8015
Sheraff wants to merge 6 commits into
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fix-react-router-use-match-route-react-compiler

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@Sheraff

@Sheraff Sheraff commented Aug 8, 2026

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fixes #4499

Summary by CodeRabbit

Summary by CodeRabbit

  • Bug Fixes

    • Improved useMatchRoute updates during route navigation.
    • Enhanced server-side rendering stability by avoiding unnecessary subscriptions.
    • Preserved callback consistency across unchanged renders and batched state updates.
  • Tests

    • Added end-to-end coverage for route matching with the React Compiler.
    • Verified navigation between routes, nested routing, and matched-route display.
    • Added coverage for route matching changes across location and router status updates.

@nx-cloud

nx-cloud Bot commented Aug 8, 2026

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View your CI Pipeline Execution ↗ for commit f1fffd1

Command Status Duration Result
nx affected --targets=test:eslint,test:unit,tes... ✅ Succeeded 3m 8s View ↗
nx run-many --target=build --exclude=examples/*... ✅ Succeeded 25s View ↗

☁️ Nx Cloud last updated this comment at 2026-08-08 22:01:52 UTC

@github-actions

github-actions Bot commented Aug 8, 2026

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🚀 Changeset Version Preview

2 package(s) bumped directly, 21 bumped as dependents.

🟩 Patch bumps

Package Version Reason
@tanstack/router-core 1.171.19 → 1.171.20 Changeset
@tanstack/start-client-core 1.170.19 → 1.170.20 Changeset
@tanstack/react-router 1.170.23 → 1.170.24 Dependent
@tanstack/react-start 1.168.40 → 1.168.41 Dependent
@tanstack/react-start-client 1.168.21 → 1.168.22 Dependent
@tanstack/react-start-rsc 0.1.39 → 0.1.40 Dependent
@tanstack/react-start-server 1.167.28 → 1.167.29 Dependent
@tanstack/router-cli 1.167.25 → 1.167.26 Dependent
@tanstack/router-generator 1.167.25 → 1.167.26 Dependent
@tanstack/router-plugin 1.168.27 → 1.168.28 Dependent
@tanstack/router-vite-plugin 1.167.27 → 1.167.28 Dependent
@tanstack/solid-router 1.170.22 → 1.170.23 Dependent
@tanstack/solid-start 1.168.39 → 1.168.40 Dependent
@tanstack/solid-start-client 1.168.21 → 1.168.22 Dependent
@tanstack/solid-start-server 1.167.28 → 1.167.29 Dependent
@tanstack/start-plugin-core 1.171.31 → 1.171.32 Dependent
@tanstack/start-server-core 1.169.23 → 1.169.24 Dependent
@tanstack/start-static-server-functions 1.167.24 → 1.167.25 Dependent
@tanstack/start-storage-context 1.167.21 → 1.167.22 Dependent
@tanstack/vue-router 1.170.21 → 1.170.22 Dependent
@tanstack/vue-start 1.168.38 → 1.168.39 Dependent
@tanstack/vue-start-client 1.167.24 → 1.167.25 Dependent
@tanstack/vue-start-server 1.167.28 → 1.167.29 Dependent

@coderabbitai

coderabbitai Bot commented Aug 8, 2026

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Review Change Stack

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info
⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: e5cc125b-edb3-4cbd-b69b-18fd4d0bb7e9

📥 Commits

Reviewing files that changed from the base of the PR and between 38c601d and f1fffd1.

📒 Files selected for processing (1)
  • e2e/react-router/react-compiler/src/main.tsx
🚧 Files skipped from review as they are similar to previous changes (1)
  • e2e/react-router/react-compiler/src/main.tsx

📝 Walkthrough

Walkthrough

useMatchRoute now updates its client callback when match state changes. SSR keeps a router-only dependency. The PR adds unit and React Compiler end-to-end coverage for navigation updates.

Changes

React Compiler match route updates

Layer / File(s) Summary
Conditional match callback dependencies
packages/react-router/src/Matches.tsx, packages/react-router/tests/Matches.test.tsx
Client callback dependencies now include location, resolved-location, and status values. Tests verify callback identity across state changes and equivalent updates.
React Compiler test application
e2e/react-router/react-compiler/index.html, e2e/react-router/react-compiler/package.json, e2e/react-router/react-compiler/tsconfig.json, e2e/react-router/react-compiler/vite.config.js, e2e/react-router/react-compiler/src/main.tsx
Adds the React Compiler fixture, route application, navigation links, matched-route output, and router mounting.
React Compiler navigation validation
e2e/react-router/react-compiler/playwright.config.ts, e2e/react-router/react-compiler/tests/use-match-route.spec.ts
Configures Playwright with a Vite test server and Chromium project. The test verifies matched-route output during Home to About to Home navigation.

Estimated code review effort: 3 (Moderate) | ~25 minutes

Sequence Diagram(s)

sequenceDiagram
  participant Browser
  participant RouterProvider
  participant useMatchRoute
  participant MatchState
  Browser->>RouterProvider: Navigate from Home to About
  RouterProvider->>MatchState: Update location and route state
  MatchState->>useMatchRoute: Recreate client callback
  useMatchRoute->>Browser: Render matched route name
Loading

Possibly related PRs

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name Status Explanation Resolution
Docstring Coverage ⚠️ Warning Docstring coverage is 25.00% which is insufficient. The required threshold is 80.00%. Write docstrings for the functions missing them to satisfy the coverage threshold.
✅ Passed checks (4 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed The title clearly identifies the React Router fix for useMatchRoute when the React Compiler is enabled.
Linked Issues check ✅ Passed The implementation updates useMatchRoute dependencies and adds regression coverage for route changes under the React Compiler [#4499].
Out of Scope Changes check ✅ Passed The changes are limited to the useMatchRoute fix and its React Compiler application, configuration, and regression tests.
✨ Finishing Touches 💡 1
📝 Generate docstrings 💡
  • Create stacked PR
  • Commit on current branch
🧪 Generate unit tests (beta)
  • Create PR with unit tests
  • Commit unit tests in branch fix-react-router-use-match-route-react-compiler

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@github-actions

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Bundle Size Benchmarks

  • Commit: 67179efeffd3
  • Measured at: 2026-08-08T21:59:40.008Z
  • Baseline source: history:44a8c3e1d2af
  • Dashboard: bundle-size history

The following scenarios have bundle-size changes compared with the baseline:

Scenario Current (gzip) Delta vs baseline Initial gzip Raw Brotli Trend
react-router.full 87.43 KiB -1 B (-0.00%) 87.29 KiB 274.38 KiB 76.06 KiB ███████▁▁▁▁▁
react-start.full 99.92 KiB -4 B (-0.00%) 99.78 KiB 314.60 KiB 86.47 KiB ███████▁▁▁▁▁
react-start.rsbuild.full 103.39 KiB -4 B (-0.00%) 103.21 KiB 325.52 KiB 89.07 KiB ▁▄▄▃▃▄▄▄▄▇██

Current gzip tracks all emitted client JS chunks. Initial gzip tracks only the entry/import graph. Trend sparkline is historical current gzip ending with this PR measurement; lower is better.

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commit: f1fffd1

@codspeed-hq

codspeed-hq Bot commented Aug 8, 2026

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Merging this PR will regress 2 benchmarks

⚠️ Different runtime environments detected

Some benchmarks with significant performance changes were compared across different runtime environments,
which may affect the accuracy of the results.

Open the report in CodSpeed to investigate

⚡ 4 improved benchmarks
❌ 2 regressed benchmarks
✅ 174 untouched benchmarks

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

Mode Benchmark BASE HEAD Efficiency
Memory mem server error-paths redirect (solid) 278.2 KB 640.2 KB -56.55%
Memory mem server server-fn-churn (vue) 263.2 KB 274.8 KB -4.21%
Memory mem server error-paths not-found (solid) 728.6 KB 411.7 KB +76.97%
Memory mem server error-paths redirect (vue) 433.1 KB 298.4 KB +45.14%
Memory mem client preload-churn (vue) 805.5 KB 738.8 KB +9.03%
Memory mem client unique-location-churn (solid) 352.4 KB 341.9 KB +3.07%

Tip

Investigate this regression by commenting @codspeedbot fix this regression on this PR, or directly use the CodSpeed MCP with your agent.


Comparing fix-react-router-use-match-route-react-compiler (f1fffd1) with main (44a8c3e)

Open in CodSpeed

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Important

At least one additional CI pipeline execution has run since the conclusion below was written and it may no longer be applicable.

Nx Cloud is proposing a fix for your failed CI:

We fixed the react-hooks/exhaustive-deps ESLint errors in useMatchRoute by moving the useStore calls to the top level of the hook unconditionally, then referencing their return values in a plain array literal passed to useCallback. This ensures both React's rules of hooks and the React Compiler's requirement for unconditional hook invocations are satisfied, while still correctly tracking location, resolvedLocation, and status changes as useCallback dependencies.

Warning

We could not verify this fix.

Suggested Fix changes
diff --git a/packages/react-router/src/Matches.tsx b/packages/react-router/src/Matches.tsx
index 9d7708fc..a8df3ba0 100644
--- a/packages/react-router/src/Matches.tsx
+++ b/packages/react-router/src/Matches.tsx
@@ -154,6 +154,16 @@ export type UseMatchRouteOptions<
 export function useMatchRoute<TRouter extends AnyRouter = RegisteredRouter>() {
   const router = useRouter()
 
+  const locationHref = useStore(
+    router.stores.location,
+    (location) => location.href,
+  )
+  const resolvedLocationHref = useStore(
+    router.stores.resolvedLocation,
+    (location) => location?.href,
+  )
+  const status = useStore(router.stores.status, (status) => status)
+
   return React.useCallback(
     <
       const TFrom extends string = string,
@@ -174,20 +184,7 @@ export function useMatchRoute<TRouter extends AnyRouter = RegisteredRouter>() {
         includeSearch,
       })
     },
-    (isServer ?? router.isServer)
-      ? [router]
-      : [
-          router,
-          // eslint-disable-next-line react-hooks/rules-of-hooks
-          useStore(router.stores.location, (location) => location.href),
-          // eslint-disable-next-line react-hooks/rules-of-hooks
-          useStore(
-            router.stores.resolvedLocation,
-            (location) => location?.href,
-          ),
-          // eslint-disable-next-line react-hooks/rules-of-hooks
-          useStore(router.stores.status, (status) => status),
-        ],
+    [router, locationHref, resolvedLocationHref, status],
   )
 }
 

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Sheraff and others added 3 commits August 8, 2026 22:52
Co-authored-by: Kamal Bennani <kamal.bennani@aircall.io>
Co-authored-by: Sarah Gerrard <98355961+LadyBluenotes@users.noreply.github.com>
@socket-security

socket-security Bot commented Aug 8, 2026

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Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff Package Supply Chain
Security
Vulnerability Quality Maintenance License
Added@​rolldown/​plugin-babel@​0.2.37310010089100
Addedbabel-plugin-react-compiler@​1.0.01001007990100

View full report

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Actionable comments posted: 2

🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@e2e/react-router/react-compiler/package.json`:
- Line 14: Update the internal dependency entries in package.json, including the
`@tanstack/react-router` entry and the other referenced workspace dependency, to
use the workspace:* protocol instead of workspace:^.

In `@e2e/react-router/react-compiler/src/main.tsx`:
- Line 12: Remove the useRouterState import and subscription from the
reproduction, including its useMemo dependency in the relevant component. Keep
the label computation dependent only on matchRoute from useMatchRoute so the E2E
fixture verifies navigation updates through useMatchRoute alone.
🪄 Autofix

Fix all unresolved CodeRabbit comments on this PR:

  • Push a commit to this branch (recommended)
  • Create a new PR with the fixes

ℹ️ Review info
⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: cdcec0a0-73fa-45ae-b6ac-dffb666f6766

📥 Commits

Reviewing files that changed from the base of the PR and between 6924573 and 67802df.

⛔ Files ignored due to path filters (1)
  • pnpm-lock.yaml is excluded by !**/pnpm-lock.yaml
📒 Files selected for processing (9)
  • e2e/react-router/react-compiler/index.html
  • e2e/react-router/react-compiler/package.json
  • e2e/react-router/react-compiler/playwright.config.ts
  • e2e/react-router/react-compiler/src/main.tsx
  • e2e/react-router/react-compiler/tests/use-match-route.spec.ts
  • e2e/react-router/react-compiler/tsconfig.json
  • e2e/react-router/react-compiler/vite.config.js
  • packages/react-router/src/Matches.tsx
  • packages/react-router/tests/Matches.test.tsx
🚧 Files skipped from review as they are similar to previous changes (1)
  • packages/react-router/src/Matches.tsx

Comment thread e2e/react-router/react-compiler/package.json
Comment thread e2e/react-router/react-compiler/src/main.tsx Outdated
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useMatchRoute not updating when using React Compiler

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