10 TypeScript Tips for Developers

TypeScript has become an essential tool for modern development. Here are 10 tips that will improve your TypeScript code.

1. Use const assertions

const colors = ['red', 'green', 'blue'] as const;
type Color = typeof colors[number]; // 'red' | 'green' | 'blue'

2. Leverage conditional types

type NonNullable<T> = T extends null | undefined ? never : T;

3. Use mapped types

type Partial<T> = {
  [P in keyof T]?: T[P];
};

Conclusion

These tips will help you write more efficient and maintainable TypeScript.