Type Check Before Tests

Priority Order

When working on the Cal.com repository, prioritize fixing type issues before addressing failing tests.

1. Run yarn type-check:ci --force first
2. Fix all TypeScript errors
3. Then run tests with TZ=UTC yarn test

Why Type Check First

Type errors are often the root cause of test failures. Fixing types first:

• Eliminates cascading failures
• Ensures code compiles correctly
• Catches issues that tests might miss

Comparing Branches

Compare type check results between the main branch and your feature branch to confirm whether you've introduced new type errors:

# On your branch
yarn type-check:ci --force 2>&1 | tee /tmp/feature-types.log

# On main
git checkout main
yarn type-check:ci --force 2>&1 | tee /tmp/main-types.log

# Compare
diff /tmp/main-types.log /tmp/feature-types.log

Missing Enum Errors

If you encounter errors related to missing enum values (like CreationSource.WEBAPP), running yarn prisma generate will typically resolve these issues by regenerating the TypeScript types from the schema.