fix: preserve static param list inference with TypeScript 7

[WookieFPV]

Motivation

TypeScript v7 (and typescript 6 with --stableTypeOrdering) broke static navigation type inference for me:
TS2315: Type 'StaticParamList' is not generic.
StaticParamList started being treated as non-generic, which caused inferred route names/params to collapse.

This small type-only change fixes the issue by tightening the internal static screen map constraint from Record<string, any> to Record<string, unknown>. I’m not fully sure why this specific shape trips TS7’s circular type alias handling, but this keeps the existing inference working.

Test plan

Added a type-level regression test for nested static navigation inference.

Related

• error compiling with tsgo #12891
• Behavior Difference: Error TS2456: Type alias circularly references itself microsoft/typescript-go#2698

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 78.88%. Comparing base (e8a05bb) to head (9ab58a3).
⚠️ Report is 129 commits behind head on 7.x.

Additional details and impacted files

@@            Coverage Diff             @@
##              7.x   #13188      +/-   ##
==========================================
+ Coverage   77.37%   78.88%   +1.50%     
==========================================
  Files         230      237       +7     
  Lines        7519     8094     +575     
  Branches     3061     3335     +274     
==========================================
+ Hits         5818     6385     +567     
- Misses       1647     1653       +6     
- Partials       54       56       +2     

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[satya164]

Thanks for the PR.

Lets remove the changes from StaticNavigation.test.tsx - that file is for runtime tests.

We have type tests in __typechecks__ with StaticParamList already

react-navigation/example/__typechecks__/static.check.tsx

Line 1136 in b013587

expectTypeOf<MyParamList>().toEqualTypeOf<{

But these don't produce any errors with TypeScript 7 (e.g. in this WIP PR #13163). So there maybe some other factors.

Edit: Maybe this is a React Navigation 7 specific issue, haven't tested those types with TS7 yet, and since TS7 doesn't have API for ESLint plugin etc. yet, can't upgrade yet.

[WookieFPV]

Thank you for the guidance!

These tests fit much better. With the new test, tsc fails without the type change in packages/core/src/types.tsx, so it now catches the regression directly.

[satya164]

Thanks