Pause an Async Function for 3 Seconds in Node.js

How can you pause an async function for 3 seconds in Node.js?

Add this line of code in your function wherever you want the pause to occur:

await new Promise(r => setTimeout(r, 3000));

This code creates a Promise and resolves it after 3000 milliseconds (or 3 seconds) using a setTimeout() function.

You could use it in your function like this:

const uploadImage = async function() {
  // do some stuff

  await new Promise(r => setTimeout(r, 3000));

  // do some more stuff
};

Also, here's an implementation of a sleep() function using this method:

const sleep = function(seconds) {
  // convert seconds to milliseconds for the setTimeout() function
  const milliseconds = seconds * 1000;

  return new Promise(r => setTimeout(r, milliseconds));
};

This function takes a seconds parameter and resolves/returns a promise after that amount of time has elapsed. When called, it will pause only the current async function it's inside of.

Here's how you'd use it:

const uploadImage = async function() {
  // do some stuff

  await sleep(3);

  // do some more stuff
};

Thanks for reading and happy coding!