What are some advanced types in TypeScript?

What are some advanced types in TypeScript?

Advanced types in TypeScript include union types, intersection types, mapped types, and conditional types. Would you like to know more about any specific type?

Can you explain union types?

Union types allow a variable to hold multiple types. For example, let value: string | number; means value can be either a string or a number.

What about intersection types?

Intersection types combine multiple types into one. For instance, type A = { x: number }; type B = { y: string }; type C = A & B; means C has both properties x and y.

How do mapped types work?

Mapped types allow you to create new types by transforming properties of an existing type. For example, type Readonly<T> = { readonly [K in keyof T]: T[K] }; makes all properties of T readonly.