chore(react-router): silence AbortError in renderRouterToStream

[Sheraff]

Summary by CodeRabbit

• Bug Fixes
  • Server-side rendering no longer logs expected abort/disconnect errors to the console, providing cleaner output during normal operation while maintaining full error handling capabilities.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: c6d69a98-b823-49ea-a37b-bd7155ad2d32

📥 Commits

Reviewing files that changed from the base of the PR and between 36ed574 and 24eea4a.

📒 Files selected for processing (2)

• .changeset/upset-eagles-happen.md
• packages/react-router/src/ssr/renderRouterToStream.tsx

---

📝 Walkthrough

Walkthrough

This PR silences AbortError logging in SSR stream rendering. A new isAbortError helper identifies abort/disconnect scenarios, and both renderToReadableStream and renderToPipeableStream error handlers conditionally suppress console errors for those cases, allowing abort plumbing to proceed without noise.

Changes

Abort Error Suppression

Layer / File(s)	Summary
Abort error detection helper packages/react-router/src/ssr/renderRouterToStream.tsx	Introduces isAbortError(request, error) predicate that checks request signal abort state and error name to classify abort-related errors.
Error handler updates for both streaming functions packages/react-router/src/ssr/renderRouterToStream.tsx	renderToReadableStream and renderToPipeableStream onError callbacks now suppress console.error for abort errors while preserving logs for other failures.
Release notes documentation .changeset/upset-eagles-happen.md	Changesets entry declares patch release and notes that AbortError is silenced in renderRouterToStream as expected behavior.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Poem

🐰 A stream once cried when users left,
But rabbits know—that's not a theft!
Just abort signals, clean and bright,
Now silenced logs make all things right. ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title directly matches the main change: silencing AbortError in renderRouterToStream, which is confirmed by the file summary showing an isAbortError helper added to suppress abort errors in the handlers.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore-react-router-silence-abort-error-render-router-to-stream

---

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View your CI Pipeline Execution ↗ for commit 24eea4a

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---

☁️ Nx Cloud last updated this comment at 2026-06-13 17:23:30 UTC

[github-actions]

🚀 Changeset Version Preview

3 package(s) bumped directly, 10 bumped as dependents.

🟩 Patch bumps

Package	Version	Reason
@tanstack/react-router	1.170.15 → 1.170.16	Changeset
@tanstack/solid-router	1.170.15 → 1.170.16	Changeset
@tanstack/start-server-core	1.169.14 → 1.169.15	Changeset
@tanstack/react-start	1.168.25 → 1.168.26	Dependent
@tanstack/react-start-client	1.168.13 → 1.168.14	Dependent
@tanstack/react-start-rsc	0.1.24 → 0.1.25	Dependent
@tanstack/react-start-server	1.167.19 → 1.167.20	Dependent
@tanstack/solid-start	1.168.25 → 1.168.26	Dependent
@tanstack/solid-start-client	1.168.13 → 1.168.14	Dependent
@tanstack/solid-start-server	1.167.19 → 1.167.20	Dependent
@tanstack/start-plugin-core	1.171.17 → 1.171.18	Dependent
@tanstack/vue-start	1.168.24 → 1.168.25	Dependent
@tanstack/vue-start-server	1.167.19 → 1.167.20	Dependent

[github-actions]

Bundle Size Benchmarks

• Commit: 2fa58c2d2f81
• Measured at: 2026-06-13T17:12:57.641Z
• Baseline source: history:36ed57409a98
• Dashboard: bundle-size history

Scenario	Current (gzip)	Delta vs baseline	Initial gzip	Raw	Brotli	Trend
react-router.minimal	87.29 KiB	0 B (0.00%)	87.15 KiB	273.66 KiB	75.88 KiB	▁▁▁▁▁▃█████
react-router.full	91.02 KiB	0 B (0.00%)	90.88 KiB	285.56 KiB	79.09 KiB	██▁▁▁▁▄▄▄▄▄
solid-router.minimal	35.48 KiB	0 B (0.00%)	35.36 KiB	105.86 KiB	32.03 KiB	▆▆▆█▁▁▁▁▁▁▁
solid-router.full	40.53 KiB	0 B (0.00%)	40.41 KiB	121.08 KiB	36.46 KiB	▆▆▆█▁▁▁▁▁▁▁
vue-router.minimal	52.97 KiB	0 B (0.00%)	52.84 KiB	149.90 KiB	47.62 KiB	███▁▁▁▁▁▁▁▁
vue-router.full	58.96 KiB	0 B (0.00%)	58.83 KiB	168.66 KiB	52.87 KiB	▁▁▁████████
react-start.minimal	101.91 KiB	0 B (0.00%)	101.77 KiB	321.98 KiB	88.21 KiB	▁▁▁▂▂▃█████
react-start.deferred-hydration	102.65 KiB	0 B (0.00%)	101.80 KiB	323.36 KiB	88.90 KiB	▁▁▂▂▂▂█████
react-start.full	105.31 KiB	0 B (0.00%)	105.18 KiB	331.91 KiB	91.06 KiB	██▁▁▁▂▆▆▆▆▆
react-start.rsbuild.minimal	99.63 KiB	0 B (0.00%)	99.46 KiB	316.43 KiB	85.79 KiB	▃▃▁▂▂▃█████
react-start.rsbuild.minimal-iife	100.03 KiB	0 B (0.00%)	99.87 KiB	317.37 KiB	86.08 KiB	▃▃▁▂▂▃█████
react-start.rsbuild.full	102.86 KiB	0 B (0.00%)	102.68 KiB	326.48 KiB	88.53 KiB	██▁▁▁▁▅▅▅▅▅
solid-start.minimal	49.60 KiB	0 B (0.00%)	49.47 KiB	151.93 KiB	43.79 KiB	▆▆▆█▁▁▁▁▁▁▁
solid-start.deferred-hydration	52.86 KiB	0 B (0.00%)	49.53 KiB	159.97 KiB	46.81 KiB	▄▄▄█▁▁▁▁▁▁▁
solid-start.full	55.40 KiB	0 B (0.00%)	55.27 KiB	168.97 KiB	48.80 KiB	▅▅▅█▁▁▁▁▁▁▁
vue-start.minimal	71.02 KiB	0 B (0.00%)	70.89 KiB	207.04 KiB	62.93 KiB	▁▁▁████████
vue-start.full	75.01 KiB	0 B (0.00%)	74.88 KiB	219.68 KiB	66.40 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.

[pkg-pr-new]

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commit: 24eea4a

[codspeed-hq]

Merging this PR will degrade performance by 3.34%

❌ 1 regressed benchmark
✅ 95 untouched benchmarks

Warning

Please fix the performance issues or acknowledge them on CodSpeed.

Performance Changes

	Mode	Benchmark	BASE	HEAD	Efficiency
❌	Simulation	ssr streaming deferred (react)	70.6 ms	73 ms	-3.34%

Tip

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

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_{Comparing chore-react-router-silence-abort-error-render-router-to-stream (24eea4a) with main (36ed574)}