Git Hooks

Automate code quality checks locally before your code is ever committed.

Version Control6 min readConcept 29 of 29

The Local Gatekeepers

Git hooks are custom scripts that Git automatically executes before or after critical lifecycle events such as committing (pre-commit), pushing (pre-push), or receiving code.

They allow developers to intercept the Git workflow to run custom logic, validate changes, or trigger external actions automatically.

Why it matters

For frontend developers, Git hooks are the ultimate automation tool for enforcing code quality.

By using hooks, you can automatically run linters (ESLint), format code (Prettier), and enforce commit structures *before* bad code makes it into the repository. It shifts quality control left, saving time in CI pipelines.

How it works (Husky)

Native Git hooks live in the hidden .git/hooks directory, which isn't shared with the team when they clone the repository.

To solve this, web teams use **Husky**. Husky configures Git to use a version-controlled directory (like .husky/) for its hooks. When developers run npm install, Husky automatically initializes these hooks so everyone has the exact same setup.

Check yourself

Pick an answer to lock it in, then read why. Getting one wrong is part of how it sticks.

  1. 1Which of the following best describes how Husky solves the main limitation of native Git hooks for teams?
  2. 2What is the most common pitfall when a team relies solely on local Git hooks for enforcing code quality?
  3. 3If you want to automatically run Prettier and ESLint exactly when a developer types `git commit`, which hook should you configure?

Remember this

  • Hooks are scripts that run on Git lifecycle events.
  • Husky makes it easy to share hooks across a web team.
  • Hooks provide fast local feedback (the spellchecker).
  • Never rely solely on hooks for security; always use CI/CD.

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