github-actions-testing

Validate GitHub Actions workflows locally using actionlint for syntax errors, yamllint for YAML issues, and act to simulate job execution. This catches cache misconfigurations, path errors, and monorepo dependency problems before deployment.

Missing or incorrect cache-dependency-path specifications prevent dependency caching from working correctly. Always specify cache-dependency-path explicitly and verify all working-directory paths exist to avoid cache misses and module-not-found errors.

Yes, use act to run GitHub Actions workflows locally. Act simulates the GitHub Actions environment, letting you validate job execution, cache behavior, and service containers before committing changes.

Run npm ci from the repository root and ensure workspace dependencies build in the correct order before type checking. Validate this structure locally to prevent CI failures when tasks depend on unbuilt modules.

Service containers require proper configuration for networking and credential setup. Validate your service container definitions using actionlint and test them with act to ensure they work correctly in CI.