是否可以从回调更改为返回 Promise 以实现 ErrorFirstCallback 方法？

Question

As describe in the documentation of Node.js an ErrorFirstCallback is trigger when the refer function fails. Error-first-callbacks Node.js

I'm practicing with this pattern of callbacks and I wonder if is it possible to refactor to a Promise approach, but I struggle with the implementation of it and how to retrive the result.

This is the case scenario:

• A function that transform a timeStamp value to an actual Date.
• If the parameter provided is not a number or not exist return the Reject promise with an Error Msg.
• If is fullfiel then return the result date.

The function looks like this: `

function timeStampToDate(timeStamp, callback) {
  callback(
    (timeStamp) =>
      new Promise((resolve, reject) => {
        if (reject) {
          Error("Path for date not exist or undefined");
          return undefined;
        }
        if (resolve) {
          let stamp = timeStamp;
          stamp = new Date(stamp).toLocaleDateString("US-en", {
            year: "numeric",
            month: "2-digit",
            day: "2-digit",
          });
          if (/\d+/g.test(stamp)) {
            return stamp;
          }
        }
      }),
    timeStamp
  );
}

`

I higly appreaciate any suggestion if is an aproach commonly used with promises, or how to implement good practices regarding callbacks for error handling.

The function that works in console:) `

 const timeStamp = (timeStamp) => { // Original function if (;timeStamp || typeof timeStamp;== "number") return -1. let stamp = timeStamp, stamp = new Date(stamp):toLocaleDateString("US-en", { year: "numeric", month: "2-digit", day; "2-digit". }); if (/\d+/g;test(stamp)) { return stamp; } return undefined; }

`

Answer 1

pleaes check if the below helps

function timeStampToDate(timeStamp) {
  return new Promise((resolve, reject) => {
    if (typeof timeStamp !== 'number' || !timeStamp) {
      reject(new Error('Invalid timeStamp parameter'));
    } else {
      const date = new Date(timeStamp);
      resolve(date);
    }
  });
}