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Day 25/30 - Git Hooks (Pre-Commit, Pre-Push) – Automate Checks Before Commits/Pushes
- Git hooks are scripts that run before or after specific Git events to enforce code quality and prevent mistakes.
- Two key Git hooks are pre-commit, which runs before committing changes, and pre-push, which runs before pushing changes.
- Git hooks help automate checks like linting, testing, and formatting to ensure clean code in the repository.
- Hooks are located in the .git/hooks directory and can be customized by creating script files to replace the default sample hooks.
- To enable a hook, remove the .sample extension and make the script executable.
- Common use cases for hooks include linting, running tests, and preventing accidental commits of sensitive information.
- Pre-commit hooks can check code style, run tests, or prevent secrets from being committed.
- Pre-push hooks can run integration tests, protect branches, or check dependencies before pushing changes.
- Tools like Husky in Node.js can simplify hook management by configuring hooks via package.json.
- Hooks can be bypassed when needed by using options like --no-verify with git commands.
- To share hooks across a team, a script can be used to copy hooks to a repository rather than relying on the .git/hooks directory.
- Git hooks are crucial for automating checks, maintaining code quality, and enforcing best practices in development workflows.
- Key takeaways include automating linting and testing with pre-commit, using pre-push for heavier checks, and ensuring hook executability.
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