Bits of .NET

⚙️ Run Scripts Automatically on Git Events

Run tests before commit? Lint before push? Git hooks automate anything. No more forgotten steps.

📝 pre-commit Hook

#!/bin/bash
# .git/hooks/pre-commit

# Run linter
npm run lint
if [ $? -ne 0 ]; then
  echo "❌ Linter failed. Fix errors before commit."
  exit 1
fi

# Run tests (only staged files)
npm test -- --findRelatedTests $(git diff --cached --name-only --diff-filter=ACM | grep '\.js$')
if [ $? -ne 0 ]; then
  echo "❌ Tests failed. Fix before commit."
  exit 1
fi

# Format code
npm run format
git add $(git diff --name-only)

echo "✅ pre-commit checks passed"
exit 0

🎯 commit-msg Hook

#!/bin/bash
# .git/hooks/commit-msg

commit_regex='^(feat|fix|docs|style|refactor|test|chore)(\(.+\))?: .{1,50}'
if ! grep -qE $commit_regex "$1"; then
    echo "❌ Invalid commit message format!"
    echo "  Allowed: feat|fix|docs|style|refactor|test|chore"
    echo "  Example: feat(api): add user authentication"
    exit 1
fi
exit 0

💡 Tools for Hook Management

• Husky (Node.js): Manage hooks in package.json
• pre-commit (Python): Framework for hooks
• lefthook (Cross-language): Fast, polyglot hooks
• overcommit (Ruby): Extensive hook library