Sleep

Intuition

• Follow Promises and async await
• Note that setTimeout is not itself a promise

Code

Async Await

async function sleep(millis: number): Promise<void> {
    await new Promise((resolve, reject) => {
        setTimeout(resolve, millis);
    });
}

Without Syntactic Sugar

/**
 * @param {number} millis
 * @return {Promise}
 */
async function sleep(millis) {
    return new Promise((resolve, reject) => {
        try {
            setTimeout(resolve, millis);
        } catch (e) {
            reject(e.message());
        }
    }).then(() => {console.log("made it!")});
}
 
/** 
 * let t = Date.now()
 * sleep(100).then(() => console.log(Date.now() - t)) // 100
 */

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References

• Sleep