Code quality

ESLint flat config, Prettier, and a Husky pre-commit hook running lint-staged.

Enabling code quality wires up linting, formatting and a pre-commit hook so style stays consistent without anyone thinking about it.

Tools#

• ESLint — using the modern flat-config format
• Prettier — opinionated formatting
• Husky — Git hooks
• lint-staged — run linters only on staged files

Commands#

npm run lint          # report problems
npm run lint:fix      # auto-fix what can be fixed
npm run format        # Prettier --write
npm run format:check  # verify formatting (CI-friendly)

Pre-commit hook#

Husky installs a pre-commit hook that runs lint-staged, which lints and formats your staged files before each commit. Broken or unformatted code never makes it into history.

.husky/
└── pre-commit   # runs lint-staged