What is a .gitignore file?

A .gitignore file tells Git which files and folders to ignore, preventing sensitive data and build artifacts from being committed.

What should I put in .gitignore?

Common entries include node_modules/, .env, dist/, __pycache__/, .DS_Store, and any files containing secrets.

Yes! The .gitignore file should be committed so all team members use the same ignore rules.

If you added node_modules before creating .gitignore, run git rm -r --cached node_modules to untrack it.

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