Skip to content

Custom Git Hooks

In this lesson you will learn custom git hooks in Git, why it matters within hooks, and how to use it correctly with clear, copy-ready examples.

Custom Git Hooks Overview

Custom Git Hooks lets you work with Git in a way that stays clear, repeatable, and easy to scale. Instead of ad-hoc steps, you follow a pattern that other developers recognise immediately.

The key is to keep custom git hooks focused and predictable. Start from the minimal example here, then add only the complexity your situation actually needs.

# .husky/pre-commit
npx lint-staged

# package.json
{
  "lint-staged": {
    "*.js": ["eslint --fix", "prettier --write"]
  }
}

Git hooks (via Husky) run checks like linting automatically before a commit is created.

Custom Git Hooks Example

git add <files>
git commit -m "message"
git push origin <branch>
  • Start from a minimal Custom Git Hooks example and grow it only as needed.
  • Keep things explicit so Custom Git Hooks behaves the same for everyone on the team.
  • Name things clearly so teammates understand your Custom Git Hooks at a glance.
  • Verify Custom Git Hooks works as expected before relying on it in important work.

Git Cheatsheet

Handy Git command reference related to custom git hooks.

Task Command Purpose
Status git status See what changed
Stage git add <file> Prepare changes to commit
Commit git commit -m "msg" Record a snapshot
Branch git switch -c name Create and switch branch
Merge git merge branch Combine histories
Push git push origin main Share commits
Pull git pull origin main Get others' commits
Undo git restore <file> Discard local changes

How Custom Git Hooks Works in Git

Custom Git Hooks builds on Git's model of snapshots and references. Every commit points to a full snapshot of your project, and branches are simply lightweight pointers to commits.

Git hooks (via Husky) run checks like linting automatically before a commit is created.

  • The working directory, staging area, and repository are Git's three main areas.
  • Commits are immutable snapshots linked to their parents.
  • Branches and tags are just pointers to commits.
  • Remotes are copies of the repository you sync with.

Practical Guidance for Custom Git Hooks

On real teams, custom git hooks works best with small, focused commits and clear messages. Commit often, write descriptive messages, and pull before you push to avoid surprises.

Habit Why it helps
Small commits Easier to review and revert
Clear messages History explains the why
Branch per feature Isolates work in progress
Pull before push Avoids avoidable conflicts

Common Mistakes

  • Copying custom git hooks commands or snippets without understanding what each part does.
  • Skipping edge cases and error handling when using custom git hooks.
  • Not verifying the result of custom git hooks before moving on.
  • Over-complicating custom git hooks before you actually need the extra flexibility.

Key Takeaways

  • Custom Git Hooks is a core part of working effectively with Git.
  • Start small and keep custom git hooks focused on a single goal.
  • Apply consistent patterns so custom git hooks scales across your project.
  • Practise and document custom git hooks to keep your workflow maintainable.

Pro Tip

When you get stuck on custom git hooks, reduce it to the smallest example first — most Git problems become obvious once the noise is gone.