refactor(router-core): improve server store performance by removing getter/setter

[Sheraff]

Compared to direct property access, getters / setters have a non-negligible performance cost. In the case of createServerStore we can significantly improve the performance of the store by using direct property access to the state.

before

after

Summary by CodeRabbit

• Refactor
  • Improved internal state management implementation in the router core. No user-facing changes.

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[coderabbitai]

📝 Walkthrough

Walkthrough

Internal refactoring of the server store implementation in router-core, switching from a closure-based state management pattern to a direct object-based approach. The public API surface remains unchanged while the internal state mechanism transitions from an enclosed variable with getter/setter methods to a mutable store object with a state property.

Changes

Cohort / File(s)	Summary
Server Store Refactoring packages/router-core/src/router.ts	Replaced closure-based state management with object-based store implementation. Changed from private closure variable with getter/setter to exposed store object with mutable state property, delegating mutations directly to store.state.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~8 minutes

Possibly related PRs

• performance: no reactivity on the server #6497 — Directly related modification to createServerStore/RouterStateStore implementation in router-core

Suggested labels

package: router-core

Suggested reviewers

• schiller-manuel

Poem

🐰 A store that once hid in a closure so tight,
Now opens its doors to the light!
From secrets concealed to properties laid bare,
The state flows through freely with elegant care. ✨

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% 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
Title check	✅ Passed	The pull request title accurately describes the main change: refactoring the server store by removing the getter/setter closure pattern in favor of a simpler object-based implementation, which is claimed to improve performance.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

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✨ Finishing touches

• 📝 Generate docstrings

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[nx-cloud]

View your CI Pipeline Execution ↗ for commit 7946fb6

Command	Status	Duration	Result
nx affected --targets=test:eslint,test:unit,tes...	✅ Succeeded	10m 10s	View ↗
nx run-many --target=build --exclude=examples/*...	✅ Succeeded	1m 43s	View ↗

---

☁️ Nx Cloud last updated this comment at 2026-01-25 09:12:46 UTC

[pkg-pr-new]

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commit: 7946fb6