how to create object of interface in typescript code example

Example 1: typescript create new object from interface

interface Foo {
    bar: string;
    qux: number;
}
// Creates object implementing interface:
const MyFoo = <Foo> {
    bar: "Hello",
    qux: 7
}
// Or:
const MyFoo: Foo = {
    bar: "Hello",
    qux: 7
}

Example 2: interface ts one valu

// use type instead interface
type StringOrNull = string | null;