refactor: clean up types for tests

[JustinBeckwith]

No description provided.

[codecov]

Codecov Report

Merging #325 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master     #325      +/-   ##
==========================================
+ Coverage   97.92%   97.93%   +<.01%     
==========================================
  Files           7        7              
  Lines         579      581       +2     
  Branches       63       63              
==========================================
+ Hits          567      569       +2     
  Misses          4        4              
  Partials        8        8

Impacted Files	Coverage Δ
src/query.ts	95.65% <ø> (ø)	⬆️
src/request.ts	99.37% <100%> (ø)	⬆️
src/index.ts	98.55% <100%> (+0.04%)	⬆️
src/transaction.ts	96% <100%> (ø)	⬆️

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