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[okwolf]

ESM doesn't allow hooking into the module cache, so we work around this in the same way that the imports for test files work, by adding a custom resolve that appends a unique query param to all imported filesystem modules

also fixed an issue with the default test pattern regex

closes #33

[codecov]

Codecov Report

Attention: Patch coverage is 65.38462% with 9 lines in your changes missing coverage. Please review.

Project coverage is 88.19%. Comparing base (1db42b4) to head (7021ca3).

Files	Patch %	Lines
src/index.js	65.38%	9 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master      #38      +/-   ##
==========================================
- Coverage   90.20%   88.19%   -2.02%     
==========================================
  Files           8        8              
  Lines         388      398      +10     
==========================================
+ Hits          350      351       +1     
- Misses         38       47       +9     

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