old_contents: import Ember from 'ember';
  
  const {
    Route,
    Object: EmberObject,
    A,
    computed: { sort }
  } = Ember;
  
  const { computed } = Ember;
  
  const FeedItem = EmberObject.extend({
    title: null,
    type: null,
    createdAt: null,
    displayDate: computed('createdAt', function () {
      return `${this.get('createdAt').toDateString()}`;
    })
  });
  
  const FeedItemsList = EmberObject.extend({
    feedItems: null,
    feedItemsSorting: [],
    sortedFeedItems: sort('feedItems', 'feedItemsSorting'),
  });
  
  export default Route.extend({
    queryParams: {
      title: {
        refreshModel: true,
        replace: true,  // prevents an additional item from being added to browser history
      },
      type: {
        refreshModel: true,
        replace: true,
      },
      createdAt: {
        refreshModel: false,
        replace: true,
      }
    },
  
    model({ title, type, createdAt }) {
      const titleSorting = title ? `title:${title}` : '';
      const createdAtSorting = createdAt ? `createdAt:${createdAt}` : '';
  
      let feedItems = this._createFeedItems();
      if (type) {
        feedItems = feedItems.filter(item => item.get('type').toLowerCase() === type.toLowerCase());
      }
  
      const feedItemsList = FeedItemsList.create({
        feedItemsSorting: [createdAtSorting, titleSorting],
        feedItems
      });
      return feedItemsList.get('sortedFeedItems');
    },
  
    /**
     * Sample set of feed items -- no particular alphabetical sorting,
     * but we'll start ordered by least-recently created so we can test
     * updating query params to most-recently created
     */
    _createFeedItems() {
      const now = Date.now();
  
      return A([
        FeedItem.create({ title: 'Nathan liked your post "Why A11y is Awesome".', type: 'Likes', createdAt: new Date(now - 10e7 * 10) }),
        FeedItem.create({ title: 'Tomster sent you a private message.', type: 'Messages', createdAt: new Date(now - 10e7 * 8) }),
        FeedItem.create({ title: 'Tomster liked your post "Why A11y is Awesome".', type: 'Likes', createdAt: new Date(now - 10e7 * 6) }),
        FeedItem.create({ title: 'Alice sent you a private message.', type: 'Messages', createdAt: new Date(now - 10e7 * 4) }),
        FeedItem.create({ title: 'Tony Stark liked your post "Why A11y is Awesome".', type: 'Likes', createdAt: new Date(now - 10e7 * 2) }),
        FeedItem.create({ title: 'Zoey sent you a private message.', type: 'Messages', createdAt: new Date() })
      ]);
    }
  });
  
new_contents: import Ember from 'ember';
  
  const {
    Route,
    Object: EmberObject,
    A,
    computed: { sort }
  } = Ember;
  
  const { computed } = Ember;
  
  const FeedItem = EmberObject.extend({
    title: null,
    type: null,
    createdAt: null,
    displayDate: computed('createdAt', function () {
      return `${this.get('createdAt').toDateString()}`;
    })
  });
  
  const FeedItemsList = EmberObject.extend({
    feedItems: null,
    feedItemsSorting: [],
    sortedFeedItems: sort('feedItems', 'feedItemsSorting')
  });
  
  export default Route.extend({
    queryParams: {
      title: {
        refreshModel: true,
        replace: true // prevents an additional item from being added to browser history
      },
      type: {
        refreshModel: true,
        replace: true
      },
      createdAt: {
        refreshModel: false,
        replace: true
      }
    },
  
    model({ title, type, createdAt }) {
      const titleSorting = title ? `title:${title}` : '';
      const createdAtSorting = createdAt ? `createdAt:${createdAt}` : '';
  
      let feedItems = this._createFeedItems();
      if (type) {
        feedItems = feedItems.filter(item => item.get('type').toLowerCase() === type.toLowerCase());
      }
  
      const feedItemsList = FeedItemsList.create({
        feedItemsSorting: [createdAtSorting, titleSorting],
        feedItems
      });
      return feedItemsList.get('sortedFeedItems');
    },
  
    /**
     * Sample set of feed items -- no particular alphabetical sorting,
     * but we'll start ordered by least-recently created so we can test
     * updating query params to most-recently created
     */
    _createFeedItems() {
      const now = Date.now();
  
      return A([
        FeedItem.create({ title: 'Nathan liked your post "Why A11y is Awesome".', type: 'Likes', createdAt: new Date(now - 10e7 * 10) }),
        FeedItem.create({ title: 'Tomster sent you a private message.', type: 'Messages', createdAt: new Date(now - 10e7 * 8) }),
        FeedItem.create({ title: 'Tomster liked your post "Why A11y is Awesome".', type: 'Likes', createdAt: new Date(now - 10e7 * 6) }),
        FeedItem.create({ title: 'Alice sent you a private message.', type: 'Messages', createdAt: new Date(now - 10e7 * 4) }),
        FeedItem.create({ title: 'Tony Stark liked your post "Why A11y is Awesome".', type: 'Likes', createdAt: new Date(now - 10e7 * 2) }),
        FeedItem.create({ title: 'Zoey sent you a private message.', type: 'Messages', createdAt: new Date() })
      ]);
    }
  });
  
subject: Make eslint happy.