Now that you know how to parse command-line arguments using process.argv and yargs, you've solved the first piece to the puzzle for the notes application. Now, how do we get that unique input from the user? The second piece to the puzzle is to solve how we store this information.
When someone adds a new note, we want to save it somewhere, preferably on the filesystem. So the next time they try to fetch, remove, or read that note, they actually get the note back. To do this, we'll need to introduce something called JSON. If you're already familiar with JSON, you probably know it is super popular. It stands for JavaScript Object Notation, and it's a way to represent JavaScript arrays and objects using a string. Now, why would you ever want to do that?
Well, you might want to do that because strings are just text, and that's pretty much supported anywhere...