Meteor timeAgo

timeago.js

/*
 *  Meteor timeAgo helper
 *  by 
 *  MIT License
 */
UI.registerHelper('formatTimeAgo', function(timestamp, options) {
    var minute = 60;
    var hour   = minute * 60;
    var day    = hour   * 24;
    var week   = day    * 7;
    var month  = week   * 4;
    var year   = month  * 12;

    var seconds = timestamp;
    var secondsAgo = getCurrentTime() - seconds;

    if(secondsAgo < 5)
        return 'just now';

    if(secondsAgo < minute)
        return 'less than 1 minute ago';

    if(secondsAgo < hour)
        return Math.floor(secondsAgo / minute) + ' minutes ago';

    if(secondsAgo < day)
        return Math.floor(secondsAgo / hour) + ' hours ago';

    if(secondsAgo < week)
        return Math.floor(secondsAgo / day) + ' days ago';

    if(secondsAgo < month)
        return Math.floor(secondsAgo / week) + ' weeks ago';

    if(secondsAgo < year)
        return Math.floor(secondsAgo / month) + ' months ago';

    return Math.floor(secondsAgo / year) + ' years ago';
});

var currentTimeDep = new Deps.Dependency;
var getCurrentTime = function() {
    currentTimeDep.depend();
    return Math.floor(Date.now() / 1000);
};
Meteor.setInterval(function() {
    currentTimeDep.changed();
}, 1000);