Git Hooks
📌 Covered in this chapter:
Pre-Commit Hook · Commit-Msg Hook · Pre-Push Hook · Husky · lint-staged
Automate checks — linting, formatting, tests — at key points in your Git workflow using Git hooks and tools like Husky.
1Git Hooks — What You'll Learn
Automate checks — linting, formatting, tests — at key points in your Git workflow using Git hooks and tools like Husky.
Here's everything this chapter covers, in the order you'll learn it:
- What Git hooks are
- The pre-commit hook (runs before a commit is created)
- The commit-msg hook (validates commit messages)
- The pre-push hook (runs before pushing)
- Auto-formatting code before commit
- Linting code before push
- Running tests automatically before push
- Husky — a popular tool for managing hooks in JS projects
- lint-staged — running linters only on staged files
- Handling and debugging hook failures
2Working Example
💻 Example: Git Hooks
Terminal
npm install --save-dev husky lint-staged
npx husky init3Best Practices & Common Pitfalls
💡 Key things to remember:
- Hooks catch problems (bad formatting, failing tests, broken lint rules) locally, before they ever reach a shared branch or trigger a slower CI pipeline.
❓ Frequently Asked Questions (FAQ)
Q What's the most important thing to understand about git hooks?
Focus on: Pre-Commit Hook · Commit-Msg Hook · Pre-Push Hook · Husky · lint-staged. These are the core building blocks this chapter's examples are built around, and they show up repeatedly in later chapters of this course.
Q Is git hooks something I'll use often in real projects?
Yes — every concept in this chapter reflects a real, everyday part of professional Git and GitHub workflows, not just a theoretical exercise.