DS.Model using javascript decorators

user.js

import DS from 'ember-data';

function model(clazz) {
  var propertyNames = Object.getOwnPropertyNames(clazz.prototype);
  var hash = {}
  propertyNames.forEach( (prop) => {
    if (prop !== "constructor") {
      hash[prop] = Object.getOwnPropertyDescriptor(clazz.prototype, prop).value;
    }
  })
  return DS.Model.extend(hash);
}

function attr(type, options) {
  return function(clazz, key, descriptor) {
    clazz[key] = DS.attr(type);
  }
}

function hasMany(association, options) {
  return function(clazz, key, descriptor) {
    clazz[key] = DS.hasMany(association, options);
  }
}

@model
export default class User {
  @attr('string')
  name
  @hasMany('post', { async: true })
  posts
}

// Is equivalent to
//
// export default DS.Model.extend({
//   name: DS.attr('string'),
//   posts: DS.hasMany('post', { async: true })
// });