AsyncAwaitResolve(promise).js

var promise1 = new Promise((resolve, reject) => {
    setTimeout(() => {
        console.log('Begin resolve promise 1')
        resolve('First')
        console.log('End resolve promise 1')
    }, 4000)
})

var promise2 = new Promise((resolve, reject) => {
    setTimeout(() => {
        console.log('Begin resolve promise 2')
        resolve(promise1)
        console.log('End resolve promise 2')
    }, 2000)
})

async function doSomething() {
    console.log('Wait promise 2')
    let value = await promise2;
    console.log('End wait promise 2')
    console.log('Value=', value);
}

doSomething()