Sequential execution of Promises using reduce()

promises_reduce.js

function asyncFunc(e) {
  return new Promise((resolve, reject) => {
    setTimeout(() => resolve(e), e * 1000);
  });
}

const arr = [1, 2, 3];
let final = [];

function workMyCollection(arr) {
  return arr.reduce((promise, item) => {
    return promise
      .then((result) => {
        console.log(`item ${item}`);
        return asyncFunc(item).then(result => final.push(result));
      })
      .catch(console.error);
  }, Promise.resolve());
}

workMyCollection(arr)
  .then(() => console.log(`FINAL RESULT is ${final}`));

			for (let chunkobj of chunks) {
				console.log('bf',chunkobj)
				let rs = 	await axios.post("/ajax/shippopbook",{chunkobj})
				console.log('af',rs)
				this.$nty.confirm('job #'+chunkobj.chunk+'/'+chunks.length+' successed');
			}