async await function in typescript

1function delay(milliseconds: number, count: number): Promise<number> {
2    return new Promise<number>(resolve => {
3            setTimeout(() => {
4                resolve(count);
5            }, milliseconds);
6        });
7}
8
9// async function always returns a Promise
10async function dramaticWelcome(): Promise<void> {
11    console.log("Hello");
12
13    for (let i = 0; i < 5; i++) {
14        // await is converting Promise<number> into number
15        const count: number = await delay(500, i);
16        console.log(count);
17    }
18
19    console.log("World!");
20}
21
22dramaticWelcome();

1// async anonymous  function always returns a Promise
2const dramaticWelcome: Promise<void> = async () => {
3    console.log("Hello");
4
5    for (let i = 0; i < 5; i++) {
6        // await is converting Promise<number> into number
7        const count: number = await delay(500, i);
8        console.log(count);
9    }
10
11    console.log("World!");
12}
13