Dexie addons

db.js

import Dexie from 'dexie';

class MyDerivedDexie extends Dexie {
	anotherProperty;
	
	anotherMethod() {
		// Do something here...
	}

    constructor (name, options) {
  		super(name, options);
	  	this.anotherProperty = "other prop";
    }
}

var db = new MyDerivedDexie("DerivedSampleDB");

alert(db.anotherProperty);
db.anotherMethod ();