AsyncAwaitLikeGenererator.js

var timer = (ms) => {
    return new Promise((resolve, reject) => {
        setTimeout(() => {
            resolve();
        }, ms)
    });
}
promises = [timer(3000), timer(5000), timer(1000), timer(2000)]
async function doSomething() {
    idx = 0;
    for (promise of promises) {
        console.log('Await promise', idx);
        let returnValue = await promise;
        console.log('Result', idx);
        idx++;
    }
}

doSomething().then(function () {
    console.log('Finish')
})