Done() function

JavaScript
#1

Hello, guys.
Here i am, solving the MongoDB challenges that freeCodeCamp made avaible.
I quite understood the challenges (i’m in the last one), but i did not quite understand the done() function. I mean, i kinda know that it is a promise solving function. But can someone clearify it to me ? Like, write it to me?
function done() being called:

const createManyPeople = (arrayOfPeople, done) => {
  Person.create(arrayOfPeople, (err, data) => {
    if (err) {
      done(err);
    }
    done(null, data);
  });

};

Thanks!

#2

I’ve edited your post for readability. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.

You can also use the “preformatted text” tool in the editor (</>) to add backticks around text.

Pre-formatted-text
Pre-formatted-text1356×380 401 KB

See this post to find the backtick on your keyboard.
Note: Backticks (`) are not single quotes (’).

#3