⚡ CHAPTER · GIT HOOKS
Automated
Quality Guards
What if Git could run checks automatically before every commit or push? That's what hooks do — scripts that fire at specific Git events.
Scene I
The hook pipeline
Hooks live in .git/hooks/.
The most popular ones:
pre-commit — lint & format before commit
commit-msg — validate commit message
pre-push — run tests before pushing
If any hook fails, the action is blocked.
Try committing with different code quality:
⚡ HOOK PIPELINE
Choose a commit to test the hooks
Clean Code
Lint Errors
Bad Commit Msg
Failing Tests
pre-commitLint & format checkPENDING
commit-msgValidate message formatPENDING
pre-pushRun test suitePENDING
Result
Loading…
$ cat .git/hooks/pre-commit
#!/bin/sh
npm run lint
if [ $? -ne 0 ]; then
echo "Lint failed! Fix errors."
exit 1 # blocks commit
fi
Epilogue
Hooks catch mistakes early.
Pass = commit allowed.
Fail = blocked until fixed.
Pass = commit allowed.
Fail = blocked until fixed.
Pro tip: use Husky or lefthook to share hooks with your team via package.json.