02_2_intersection-types.md

Intersection Types

Or how to combine types.

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• Type example with objects
• Interface example with objects

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Interfaces only support objects, so if you need to combine other types than objects, you will need types

Type example with objects

type Person = {
  name: string;
}

type Engineer = {
  employer: string;
}

type User = Person & Engineer;

const user: User = {
  name: 'Peter',
  employer: 'Apple'
}

Interface example with objects

interface Person {
  name: string;
}

interface Engineer {
  employer: string;
}

interface User extends Person, Engineer {}

const user: User = {
  name: 'Peter',
  employer: 'Apple'
}