Async/await Madrid JS DayES

async_await.js

  (async function () {
    const a = await asyncFunction(2)
    const b = await asyncFunction(a)
    const c = await asyncFunction(b)
    const d = await asyncFunction(c)
    console.log(d);
})()

function asyncFunction(x, fn){
    return new Promise(function (resolve, reject) {
        setTimeout(() => {
           resolve(x * x) 
        }, 100);
    })
}