perf(types): use homomorphic mapped type to reduce conditional branches

[m-shaka]

…anches

The author should do the following, if applicable

• Add tests
• Run tests
• bun run format:fix && bun run lint:fix to format the code
• Add TSDoc/JSDoc to document the code

Reduced conditional branches by using homomorphic mapped type.
The number of type instantiation has dropped a bit and the definition became simpler than before

FYI

• https://www.typescriptlang.org/docs/handbook/release-notes/typescript-3-1.html#mapped-types-on-tuples-and-arrays
• https://andreasimonecosta.dev/posts/what-the-heck-is-a-homomorphic-mapped-type/

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 95.77%. Comparing base (66df4e1) to head (57aa0d8).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3440   +/-   ##
=======================================
  Coverage   95.77%   95.77%           
=======================================
  Files         155      155           
  Lines        9310     9310           
  Branches     2759     2773   +14     
=======================================
  Hits         8917     8917           
  Misses        393      393           

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[yusukebe]

LGTM!

[yusukebe]

@m-shaka

Good improvement. Thanks!