Async performance

async_performance3.js

let tryAsync = async () => {
    let msgs = await Promise.all([promise(1000), promise(2000), promise(3000)])
    msgs.forEach(msg => {
        console.log(msg)
    });
    console.log(`End of Promise.all(..)`)
}
tryAsync()

//Result
/* 
    Promise 1000 start
    Promise 2000 start
    Promise 3000 start
    Promise 1000 end
    Promise 2000 end
    Promise 3000 end
    End of Promise.all(..) 
*/