Ghost/core/client/views/content-preview-content-view.js

import setScrollClassName from 'ghost/utils/set-scroll-classname';

var PostContentView = Ember.View.extend({
    classNames: ['content-preview-content'],

    didInsertElement: function () {
        var el = this.$();
        el.on('scroll', Ember.run.bind(el, setScrollClassName, {
            target: el.closest('.content-preview'),
            offset: 10
        }));
    },

    willDestroyElement: function () {
        var el = this.$();
        el.off('scroll');
    }
});

export default PostContentView;