addon/configuration.js
import Ember from 'ember';
const { get, set } = Ember;
export default {
load(config) {
let wrappedConfig = Ember.Object.create(config);
for (let property in wrappedConfig) {
if (wrappedConfig.hasOwnProperty(property)) {
let value = get(wrappedConfig, property);
if (Ember.typeOf(get(this, property)) === 'undefined') {
set(this, property, value);
}
}
}
}
};