jest-tips.md

id	title
jest-tips	Jest Tips

Common Errors and Fixes

• Jest testing has some caching built in. This can continue to show bad cached results, even if tests are fixed. To run tests without cache, run:

npm run test:unit -- --no-cache

• SyntaxError: Unexpected token import is an error you'll see if your compiled node modules build is different from the ones the tests are running against. To fix this issue, try the following commands, testing after each command to see if it's been fixed:

rm -rf node_modules && npm install

npm rebuild

• Error: 'fsevents' unavailable (this watcher can only be used on Darwin) is thrown when watchman is not installed. Install watchman to fix this error:

brew install watchman