Learn TYPESCRIPT with Real Code Examples
Updated Nov 17, 2025
Performance Notes
Enable incremental and composite projects
Use isolatedModules for faster builds
Prefer type over interface where possible
Minimize complex mapped types in hot paths
Security Notes
Use type-safe API schemas
Avoid unsafe type assertions
Validate all external input
Use ESLint rules for consistent safety
Monitoring Analytics
Use Sentry with TypeScript support
Typed logging with pino
Monitoring via OpenTelemetry
Code Quality
Use ESLint + Prettier
Avoid any
Leverage discriminated unions
Prefer immutability