typescript type of object of functions code example

Example 1: typing in typescript

var name: string = "Anna";
let notes: (number | string)[] = ["Get Food", 23, "Call the previous number when betting"];

Example 2: get function return type typescript

type return_type = ReturnType<() => string>; // string
// or
function hello_world(): string {
  return "hello world";
}
type return_type = ReturnType<typeof hello_world>; // string