Advanced Typescript Development Tutorials, Guides & Insights

class GenericNumber<T> {
  zeroValue: T;
  add: (x: T, y: T) => T;
}

let myGenericNumber = new GenericNumber<number>();
myGenericNumber.zeroValue = 0;
myGenericNumber.add = (x, y) => x + y;

TypeScript allows you to create custom types using type aliases:

TypeScript’s type inference allows the compiler to determine types automatically without explicit annotations.

let name = 'Alice'; // inferred as string
let age = 30;       // inferred as number
let isDeveloper = true; // inferred as boolean