fix: export missing rewriteBasepath function

[andorep]

rewriteBasepath is missing from the exports of react router

Summary by CodeRabbit

• New Features
  • Expanded public API with a new router helper for base-path rewrites, making URL base-path customization easier.
  • Existing rewrite composition capability remains available and unchanged.
  • No breaking changes; apps continue to work as before and can adopt the new helper incrementally without config updates.

[coderabbitai]

Walkthrough

Two packages expose a new symbol: rewriteBasepath was added to packages/router-core exports and re-exported from packages/react-router public index. No behavior or control flow changes were introduced.

Changes

Cohort / File(s)	Summary
router-core exports packages/router-core/src/index.ts	Added export of rewriteBasepath from ./rewrite, increasing the public API surface.
react-router re-exports packages/react-router/src/index.tsx	Re-exported rewriteBasepath from @tanstack/router-core alongside existing composeRewrites.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• fix(router): rewriteBasepath not working without trailing slash #5244 — Changes implementation and tests for rewriteBasepath, directly related to this PR’s newly exported symbol.

Suggested reviewers

• schiller-manuel

Poem

I nibble through paths with tidy delight,
A hop, a skip—new exports in sight! 🐇
composeRewrites waits, its partner joins fast,
rewriteBasepath hops in at last.
Small changes, neat burrows—public API made bright.

Pre-merge checks and finishing touches

✅ 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 succinctly summarizes the main change by indicating that the missing rewriteBasepath function is being exported, which directly reflects the core objective of the pull request.
Docstring Coverage	✅ Passed	No functions found in the changes. Docstring coverage check skipped.

✨ Finishing touches

• 📝 Generate docstrings

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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📜 Recent review details

Configuration used: CodeRabbit UI

Review profile: CHILL

Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between ce9c7f0 and 9821c7a.

📒 Files selected for processing (1)

• packages/router-core/src/index.ts (1 hunks)

🧰 Additional context used

📓 Path-based instructions (2)

**/*.{ts,tsx}

📄 CodeRabbit inference engine (AGENTS.md)

Use TypeScript in strict mode with extensive type safety across the codebase

Files:

• packages/router-core/src/index.ts

packages/router-core/**

📄 CodeRabbit inference engine (AGENTS.md)

Keep framework-agnostic core router logic in packages/router-core/

Files:

• packages/router-core/src/index.ts

🧠 Learnings (1)

📓 Common learnings

Learnt from: CR
PR: TanStack/router#0
File: AGENTS.md:0-0
Timestamp: 2025-09-23T17:36:12.598Z
Learning: Applies to packages/{react-router,solid-router}/** : Implement React and Solid bindings/components only in packages/react-router/ and packages/solid-router/

🔇 Additional comments (1)

packages/router-core/src/index.ts (1)

438-443: LGTM: rewriteBasepath export verified.

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[schiller-manuel]

no this function is not meant for external consumption.

[andorep]

@schiller-manuel Sorry about that, I thought this was still the way to do the base_url configuration from vite.

Is there a doc where I can check that?

If not, I probably could help with more documentation about that, if you just point me to the right direction to start, I can go from there myself