ts async function type

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();

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4.17

6

Ilya Kogan 100 points

                                    // async anonymous  function always returns a Promise
const dramaticWelcome: Promise&lt;void&gt; = async () =&gt; {
    console.log(&quot;Hello&quot;);

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

    console.log(&quot;World!&quot;);
}

Thank you! 6

4.17 (6 Votes)

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