I am building an app using Electron. In this app, I am building a data structure using JSON. My data structure looks like this:

{

  items: [

    { id:1, name:'football' },

    { id:2, name:'soccer ball' },

    { id:3, name:'basketball' }

  ]

}

I want to save this JSON to a file called data.json. I want to save it to a file because I want to load the next time the application starts. My challenge is, I do not know how to save the data. In fact, I'm not sure where I should even save the file. Do I save it in the same directory as the app? Or is there some cross-platform approach I should use?

Currently, I have the following:

saveClick: function() {

  var json = JSON.stringify(this.data);

  // assume json matches the JSON provided above.

  // Now, I'm not sure how to actually save the file.

} 

So, how / where do I save JSON to the local file system for use at a later time?