refactor: rename .js files to .ts and update local imports

[lpatiny]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 80.00000% with 14 lines in your changes missing coverage. Please review.
✅ Project coverage is 50.00%. Comparing base (2588aed) to head (90c05da).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
src/jsgraph/getAnnotations.ts	0.00%	13 Missing ⚠️
src/convertPeak.ts	90.90%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #16      +/-   ##
==========================================
+ Coverage   49.49%   50.00%   +0.50%     
==========================================
  Files           6        6              
  Lines          99      112      +13     
  Branches       37       42       +5     
==========================================
+ Hits           49       56       +7     
- Misses         43       49       +6     
  Partials        7        7              

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