Expand Test Coverage

[kristoferbaxter]

Add test coverage for strict declaration removal cases, and functions exported with multiple arguments.

[codecov-io]

Codecov Report

Merging #262 into master will increase coverage by 0.13%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #262      +/-   ##
==========================================
+ Coverage   94.69%   94.83%   +0.13%     
==========================================
  Files          14       14              
  Lines        1432     1432              
  Branches      142      142              
==========================================
+ Hits         1356     1358       +2     
+ Misses         72       70       -2     
  Partials        4        4

Impacted Files	Coverage Δ
src/transformers/exports.ts	94.39% <0%> (+0.31%)	⬆️
src/transformers/strict.ts	91.17% <0%> (+1.47%)	⬆️

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