refactor(router-core): more robust encodePathLikeUrl path utility

[Sheraff]

Summary by CodeRabbit

• Bug Fixes

  • Improved URL path encoding to align with web standards, ensuring more precise handling of special characters in URLs.

• Documentation

  • Updated documentation to reflect changes in URL encoding behavior.

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[coderabbitai]

📝 Walkthrough

Walkthrough

The PR refines encodePathLikeUrl in router-core to align with WHATWG path percent-encode standards, replacing a broad encoding pattern with a precise set targeting control characters, DEL, specific ASCII punctuation, and non-ASCII characters. Documentation is updated accordingly.

Changes

Cohort / File(s)	Summary
Percent-Encode Logic Refinement packages/router-core/src/utils.ts	Reworked encodePathLikeUrl to use WHATWG-compliant percent-encoding rules; narrowed character set from broad whitespace/non-ASCII pattern to precise targeting of control chars, DEL, certain ASCII punctuation, and non-ASCII. Fast-path check retained with tightened pattern. Documentation updated to clarify encoding behavior and preservation of backslash.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

• refactor(router-core): decodePath fast path when no encoded chars #6504 — Adds fast-path to decodePath, complementing this PR's encoding refinements in the same utility file.
• fix(router-core): use encodeURIComponent for splat route params #6520 — Modifies the same encodePathLikeUrl function to tighten WHATWG-style percent-encoding for href building and splat parameter handling.

Suggested labels

package: router-core

Suggested reviewers

• nlynzaad

Poem

🐰 A path through the WHATWG way,
Where characters find their encode-ray,
Control and punctuation true,
Router-core now has a cleaner view! ✨

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 50.00% which is insufficient. The required threshold is 80.00%.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'more robust encodePathLikeUrl path utility' accurately describes the main change: refactoring the encodePathLikeUrl function to be more robust by aligning with WHATWG path percent-encode rules.

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✨ Finishing touches

• 📝 Generate docstrings

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[nx-cloud]

🤖 Nx Cloud AI Fix Eligible

An automatically generated fix could have helped fix failing tasks for this run, but Self-healing CI is disabled for this workspace. Visit workspace settings to enable it and get automatic fixes in future runs.

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---

View your CI Pipeline Execution ↗ for commit fcc7cd6

Command	Status	Duration	Result
nx affected --targets=test:eslint,test:unit,tes...	❌ Failed	11m 41s	View ↗
nx run-many --target=build --exclude=examples/*...	✅ Succeeded	1m 43s	View ↗

---

☁️ Nx Cloud last updated this comment at 2026-01-29 19:24:31 UTC

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commit: fcc7cd6