ghost/core/client/app/helpers/gh-format-timeago.js

import Ember from 'ember';

export default Ember.HTMLBars.makeBoundHelper(function (arr /* hashParams */) {
    if (!arr || !arr.length) {
        return;
    }

    var timeago = arr[0];

    return moment(timeago).fromNow();
    // stefanpenner says cool for small number of timeagos.
    // For large numbers moment sucks => single Ember.Object based clock better
    // https://github.com/manuelmitasch/ghost-admin-ember-demo/commit/fba3ab0a59238290c85d4fa0d7c6ed1be2a8a82e#commitcomment-5396524
});