Some typing improvements

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 97.06%. Comparing base (2975679) to head (eb4d3aa).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #345 +/- ## ========================================== - Coverage 97.06% 97.06% -0.01% ========================================== Files 35 35 Lines 3507 3506 -1 ========================================== - Hits 3404 3403 -1 Misses 103 103 ```

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