fix(types): improve TypeScript type definitions

[josh-cloudscape]

Fixes #373 (as well as other issues)

[stepankuzmin]

Excellent, thanks @josh-cloudscape 👍

[codecov]

Codecov Report

Merging #378 (16da386) into main (e24c6b4) will not change coverage.
The diff coverage is n/a.

❗ Current head 16da386 differs from pull request most recent head 79ed110. Consider uploading reports for the commit 79ed110 to get more accurate results

@@           Coverage Diff           @@
##             main     #378   +/-   ##
=======================================
  Coverage   98.34%   98.34%           
=======================================
  Files          26       26           
  Lines         725      725           
  Branches      180      180           
=======================================
  Hits          713      713           
  Misses          8        8           
  Partials        4        4           

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