In this snippet post, I'll quickly show you a conversation I had with ChatGPT on how to "Create a promise in NodeJS that resolves when a file is read".

Me: "create a promise that resolves when the file is read"

ChatGPT: Here is an example of a promise that resolves when a file is read:

const fs = require('fs');

function readFile(filePath) {
  return new Promise((resolve, reject) => {
    fs.readFile(filePath, (err, data) => {
      if (err) {
        reject(err);
      } else {
        resolve(data);
      }
    });
  });
}

This function uses the fs.readFile method, which is a built-in Node.js module for reading files. It takes a file path and a callback function as arguments. The callback function is called with an error object and the contents of the file as arguments. If there is an error reading the file, the readFile function will reject the promise with the error. Otherwise, it will resolve the promise with the contents of the file.

You can use this function like this:

readFile('path/to/file.txt')
  .then(data => {
    console.log(data);
  })
  .catch(err => {
    console.error(err);
  });

This will print the contents of the file to the console if the file is successfully read, or log an error if there is a problem reading the file.

Alright. That's it. I hope you found this useful! Happy coding!

Thanks for reading ❤