Fix types for fn definitions

[robak86]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 96.29630% with 1 line in your changes missing coverage. Please review.

Project coverage is 79.44%. Comparing base (52e3e09) to head (598e448).
Report is 1 commits behind head on dev.

Files with missing lines	Patch %	Lines
packages/hooks/src/index.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #104      +/-   ##
==========================================
- Coverage   79.74%   79.44%   -0.31%     
==========================================
  Files          86       86              
  Lines        2291     2257      -34     
  Branches      555      546       -9     
==========================================
- Hits         1827     1793      -34     
  Misses        456      456              
  Partials        8        8              

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