fix: use modulePaths to improve Jest 27 imports

[nickserv]

What: Use modulePaths to improve Jest 27 imports

Why: Fixes #219 which would unblock testing-library/eslint-plugin-jest-dom#185

How:

• Moved all moduleDirectories (except node_modules) to modulePaths, which properly prioritizes resolving node_modules over local project modules
  • It's theoretically possible that this could break a test that relies on the opposite functionality, though IMO that would not be a good assumption to make, and it's worth noting that semver does not protect users from breaking changes resulting from bug fixes
• Switched to using <rootDir>, which should provide better support for kcd-scripts test in monorepos
• Ran an end to end test using npm link within testing-library/eslint-plugin-jest-dom
  • The entire test suite now passes with Jest 26 (previously passing) and 27 (previously failing)

Checklist:

• Documentation N/A
• Tests
• Ready to be merged
  

[kentcdodds]

Cool 👍 Thanks!

[codecov]

Codecov Report

Merging #220 (99ba287) into main (32f3cfb) will not change coverage.
The diff coverage is 50.00%.

@@           Coverage Diff           @@
##             main     #220   +/-   ##
=======================================
  Coverage   63.29%   63.29%           
=======================================
  Files          21       21           
  Lines         594      594           
  Branches      222      222           
=======================================
  Hits          376      376           
  Misses        177      177           
  Partials       41       41           

Impacted Files	Coverage Δ
src/config/jest.config.js	92.30% <50.00%> (ø)

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[github-actions]

🎉 This PR is included in version 11.2.1 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

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