chore: adjust types to only use interfaces if possible

[susnux]

• left over of refactor: use interfaces where possible instead of instances #1417

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.47%. Comparing base (784c3ff) to head (2647084).
⚠️ Report is 10 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1440   +/-   ##
=======================================
  Coverage   89.47%   89.47%           
=======================================
  Files          25       25           
  Lines         703      703           
  Branches      194      194           
=======================================
  Hits          629      629           
  Misses         62       62           
  Partials       12       12           

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[ShGKme]

No ESLint here?

[susnux]

Not v9 yet 😔