import mongoose from 'mongoose'; const instance = new mongoose.Schema({ _id: mongoose.Schema.Types.ObjectId, // _id is set by default, (you can remove this line) /* name = property of document object String = type of value ---> https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures */ name: String, }); // document = model name ---> https://mongoosejs.com/docs/guide.html // note: use a singular name, mongoose automatically creates a collection like so -> model: 'Person' === collection: 'people' const document = 'Example'; export default mongoose.model(document, instance);