promises-with-different-resolve-times.js

const promiseWithMilliseconds = (ms, index) => {
    return new Promise((resolve,reject) => {
        console.time(`Time:${index}`)
        setTimeout(() => {
            console.timeEnd(`Time:${index}`)
            return resolve(`Resolved in ${ms}`)
        }, ms);
    })
}

Promise.all([promiseWithMilliseconds(3000,1), promiseWithMilliseconds(2000,2), promiseWithMilliseconds(1000,3)])
 .then((result) => {
   console.log('Result', result)
 })
 .catch((error) => console.log(`Error: ${error}`))


/* 
  Time:3: 1002.9638671875 ms
  Time:3: 1.006s
  Time:2: 2002.5029296875 ms
  Time:2: 2.003s
  Time:1: 3001.677001953125 ms
  Time:1: 3.002s
  Result (3) ['Resolved in 3000', 'Resolved in 2000', 'Resolved in 1000']
*/