Dynamic Selenium Page Model example in NodeJS / JavaScript

example.js

'use strict'

class MagicPage {
  constructor () {
    var contents = Object.keys(this.getContent())
    contents.map((key) => {
      this[key] = this.getContent()[key]
    })
  }
}

class ObviousPage extends MagicPage {
  getContent () {
    return {
      button: () => { return 'i-could-be-anything' }
    }
  }
}

var page = new ObviousPage()

console.log(page.button())