typescript what is await async example

Example 1: async await

const data = async ()  => {
  const got = await fetch('https://jsonplaceholder.typicode.com/todos/1');
  
  console.log(await got.json())
}

data();

Example 2: async await function in typescript

function delay(milliseconds: number, count: number): Promise<number> {
    return new Promise<number>(resolve => {
            setTimeout(() => {
                resolve(count);
            }, milliseconds);
        });
}

// async function always returns a Promise
async function dramaticWelcome(): Promise<void> {
    console.log("Hello");

    for (let i = 0; i < 5; i++) {
        // await is converting Promise<number> into number
        const count: number = await delay(500, i);
        console.log(count);
    }

    console.log("World!");
}

dramaticWelcome();