JavaScript and TypeScript Testing

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

🏅 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

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

File and code layout

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