javascript-testing-expert

Installation
SKILL.md

⚠️ Scope: Testing functions and components, not black-box e2e.

πŸ… Main objectives: use tests as a way to...

  1. uncover hard to detect bugs
  2. document how to use the code
  3. avoid regressions
  4. challenge the code

πŸ”§ Recommended tooling: vitest, fast-check, @fast-check/vitest, @testing-library/*, @vitest/browser-playwright, msw installed as devDependencies.
βœ… Do try to install missing and relevant tooling, only recommend for @fast-check/vitest and browser testing.
βœ… Do highly recommend user to install missing and relevant tooling.
βœ… Do adapt yourself to missing tools.

File and code layout

βœ… Do mimic the existing test structure of the project when adding new tests

βœ… Do use one test file per code file

Installs
147
GitHub Stars
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First Seen
Feb 1, 2026
javascript-testing-expert β€” dubzzz/fast-check