Fix and improve eslint config, other minor changes

[flevi29]

Pull Request

What does this PR do?

• eslint config was set up in a confusing way, now it's simplified and works as it should
• typescript didn't check test files, now it does

PR checklist

Please check if your PR fulfills the following requirements:

• Does this PR fix an existing issue, or have you listed the changes applied in the PR description (and why they are needed)?
• Have you read the contributing guidelines?
• Have you made sure that the title is accurate and descriptive of the changes?

Thank you so much for contributing to Meilisearch!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.93%. Comparing base (d8ef010) to head (8353590).
Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1795   +/-   ##
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  Coverage   97.93%   97.93%           
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  Files          18       18           
  Lines        1546     1546           
  Branches      326      326           
=======================================
  Hits         1514     1514           
  Misses         32       32           

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[Strift]

Hi @flevi29, thank you for this PR.

This is a welcome simplification of the eslint configuration.
It would have been simpler to review if the typescript part was made in a separate PR.

I left a small comment, but the rest seems good to me. Happy to merge after next week's releases.

[Strift]

bors merge

[meili-bors]

Build succeeded:

• integration-tests (Node.js 18)
• types-check
• style-check
• integration-tests (Node.js 20)