Type

type keyword is used to create signature for objects, functions, arrays etc

type should be more preferred over interface

1. Objects

type Person = {
	name: string;
	age: number;
	color: "black" | "white";
};

// The color key can only have string value of "black" or "white"

const person: Person = {
	name: "Rishabh",
	age: 23,
	color: "white",
};

2. Functions

type FunctionType = (num: number) => number;

const alwaysEven: FunctionType = (num) => {
	return num * 2;
};

type TFunction = (props: {
  num: number,
  display: (num: number) => void
}): void;