ESLint catches bugs and enforces consistency in TypeScript projects. Here's how to set it up.
Basic Setup
Loading code block...
Flat Config (ESLint 9+)
Loading code block...
Legacy Config (.eslintrc)
Loading code block...
React Projects
Loading code block...
Essential Rules
Loading code block...
Custom Rule Configuration
Loading code block...
Disabling Rules
Loading code block...
Override Patterns
Loading code block...
Prettier Integration
Loading code block...
Loading code block...
Loading code block...
Import Sorting
Loading code block...
Loading code block...
IDE Integration
Loading code block...
Loading code block...
Package.json Scripts
Loading code block...
Pre-commit Hooks
Loading code block...
Loading code block...
Loading code block...
CI Configuration
Loading code block...
Monorepo Setup
Loading code block...
Debugging ESLint
Loading code block...
Best Practices
Configuration:
✓ Use flat config for new projects
✓ Enable type-checked rules
✓ Integrate with Prettier
✓ Set up pre-commit hooks
Rules:
✓ Start with recommended, customize as needed
✓ Use consistent-type-imports
✓ Enable no-floating-promises
✓ Allow underscore for unused vars
Performance:
✓ Cache results in CI
✓ Use project references for monorepos
✓ Ignore generated files
✓ Run in parallel when possible
Conclusion
ESLint with TypeScript catches type-related bugs and enforces consistency. Use flat config for new projects, enable strict type checking, and integrate with Prettier for formatting. Pre-commit hooks ensure code quality before commits reach the repository.