'use strict';
const _ = require('lodash');

function uniqObjs( arr ) {
    const uniques = [];

    return _.filter( arr, ( obj ) => {
        if( _.isUndefined( _.findWhere( uniques, obj ))){
            uniques.push( obj );
            return true;
        }

        return false;
    });
}

_.mixin({ 'uniqObjs': uniqObjs });

var stuff = [
    { application: 'jenkins', version: 6 },
    { application: 'nginx',  version: 1 },
    { application: 'chef',  version: 2 },
    { application: 'apache', version: 2 },
    { application: 'nginx',  version: 5 },
    { application: 'nagios',  version: 2 },
    { application: 'tripwire', version: 2 },
    { application: 'nginx',  version: 4 },
    { application: 'nginx',  version: 2 },
    { application: 'apache', version: 2 },
    { application: 'tripwire',  version: 1 },
    { application: 'chef',  version: 2 },
    { application: 'nagios', version: 4 },
    { application: 'nginx',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'apache', version: 3 },
    { application: 'nginx',  version: 1 },
    { application: 'tripwire',  version: 2 },
    { application: 'apache', version: 2 },
    { application: 'nginx',  version: 6 },
    { application: 'nagios',  version: 2 },
    { application: 'apache', version: 2 },
    { application: 'tripwire',  version: 1 },
    { application: 'nginx',  version: 5 },
    { application: 'apache', version: 2 },
    { application: 'nginx',  version: 1 },
    { application: 'chef',  version: 3 },
    { application: 'tripwire', version: 2 },
    { application: 'jenkins',  version: 5 },
    { application: 'nginx',  version: 2 },
    { application: 'nagios', version: 2 },
    { application: 'nginx',  version: 2 },
    { application: 'nginx',  version: 2 },
    { application: 'tripwire', version: 2 },
    { application: 'nginx',  version: 4 },
    { application: 'nginx',  version: 2 },
    { application: 'apache', version: 2 },
    { application: 'nginx',  version: 3 },
    { application: 'chef',  version: 2 },
    { application: 'nagios', version: 4 },
    { application: 'nginx',  version: 1 },
    { application: 'nginx',  version: 4 },
    { application: 'tripwire', version: 2 },
    { application: 'nginx',  version: 5 },
    { application: 'nginx',  version: 2 },
    { application: 'apache', version: 2 },
    { application: 'nginx',  version: 3 },
    { application: 'nginx',  version: 2 },
    { application: 'apache', version: 4 },
    { application: 'chef',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'tripwire', version: 5 },
    { application: 'jenkins',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'apache', version: 5 },
    { application: 'nginx',  version: 1 },
    { application: 'tripwire',  version: 4 },
    { application: 'nagios', version: 2 },
    { application: 'nginx',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'apache', version: 4 },
    { application: 'nginx',  version: 1 },
    { application: 'tripwire',  version: 2 },
    { application: 'nagios', version: 3 },
    { application: 'chef',  version: 1 },
    { application: 'nginx',  version: 5 },
    { application: 'apache', version: 2 },
    { application: 'jenkins',  version: 1 },
    { application: 'nginx',  version: 5 },
    { application: 'apache', version: 2 },
    { application: 'nagios',  version: 1 },
    { application: 'nginx',  version: 3 },
    { application: 'apache', version: 2 },
    { application: 'nginx',  version: 1 },
    { application: 'tripwire',  version: 2 },
    { application: 'apache', version: 4 },
    { application: 'nginx',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'apache', version: 4 },
    { application: 'nginx',  version: 1 },
    { application: 'nginx',  version: 5 },
    { application: 'nagios', version: 2 },
    { application: 'nginx',  version: 3 },
    { application: 'nginx',  version: 2 },
    { application: 'apache', version: 2 },
    { application: 'nginx',  version: 3 },
    { application: 'chef',  version: 2 },
    { application: 'apache', version: 2 },
    { application: 'jenkins',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'tripwire', version: 2 },
    { application: 'nginx',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'nagios', version: 5 },
    { application: 'nginx',  version: 1 },
    { application: 'nginx',  version: 4 },
    { application: 'apache', version: 2 },
    { application: 'nginx',  version: 1 },
    { application: 'tripwire',  version: 2 },
    { application: 'apache', version: 3 },
    { application: 'nagios',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'apache', version: 4 },
    { application: 'nginx',  version: 1 },
    { application: 'nginx',  version: 5 },
    { application: 'apache', version: 2 },
    { application: 'nginx',  version: 1 },
    { application: 'chef',  version: 2 },
    { application: 'apache', version: 3 },
    { application: 'tripwire',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'apache', version: 2 },
    { application: 'jenkins',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'apache', version: 3 },
    { application: 'nginx',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'nagios', version: 2 },
    { application: 'nginx',  version: 5 },
    { application: 'nginx',  version: 4 },
    { application: 'tripwire', version: 2 },
    { application: 'nginx',  version: 1 },
    { application: 'nginx',  version: 5 },
    { application: 'apache', version: 2 },
    { application: 'nginx',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'apache', version: 5 },
    { application: 'nginx',  version: 4 },
    { application: 'nginx',  version: 3 },
    { application: 'tripwire', version: 2 },
    { application: 'nginx',  version: 1 },
    { application: 'nginx',  version: 5 },
    { application: 'apache', version: 4 },
    { application: 'nagios',  version: 1 },
    { application: 'jenkins',  version: 2 },
    { application: 'chef', version: 2 },
    { application: 'nginx',  version: 4 },
    { application: 'tripwire',  version: 2 },
    { application: 'apache', version: 2 },
    { application: 'nginx',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'apache', version: 3 },
    { application: 'nginx',  version: 4 },
    { application: 'nginx',  version: 5 },
    { application: 'tripwire', version: 2 },
    { application: 'nginx',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'nagios', version: 2 },
    { application: 'chef',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'apache', version: 2 },
    { application: 'nginx',  version: 1 },
    { application: 'tripwire',  version: 2 },
    { application: 'apache', version: 2 },
    { application: 'nginx',  version: 3 },
    { application: 'nginx',  version: 4 },
    { application: 'apache', version: 5 },
    { application: 'nginx',  version: 1 },
    { application: 'jenkins',  version: 2 },
    { application: 'chef', version: 2 },
    { application: 'nginx',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'apache', version: 2 },
    { application: 'nagios',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'tripwire', version: 2 },
    { application: 'nginx',  version: 3 },
    { application: 'nginx',  version: 4 },
    { application: 'apache', version: 5 },
    { application: 'nginx',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'tripwire', version: 2 },
    { application: 'nginx',  version: 3 },
    { application: 'nginx',  version: 4 },
    { application: 'apache', version: 5 },
    { application: 'chef',  version: 1 },
    { application: 'nagios',  version: 2 },
    { application: 'apache', version: 2 },
    { application: 'nginx',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'apache', version: 2 },
    { application: 'nginx',  version: 1 },
    { application: 'jenkins',  version: 2 },
    { application: 'apache', version: 2 },
    { application: 'nginx',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'chef', version: 2 },
    { application: 'nginx',  version: 3 },
    { application: 'nginx',  version: 4 },
    { application: 'nagios', version: 5 },
    { application: 'nginx',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'chef', version: 2 },
    { application: 'nginx',  version: 1 },
    { application: 'nagios',  version: 2 },
    { application: 'jenkins', version: 2 },
    { application: 'nginx',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'apache', version: 2 },
    { application: 'tripwire',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'apache', version: 2 },
    { application: 'chef',  version: 1 },
    { application: 'nginx',  version: 3 },
    { application: 'apache', version: 4 },
    { application: 'nginx',  version: 5 },
    { application: 'tripwire',  version: 2 },
    { application: 'apache', version: 2 },
    { application: 'nginx',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'tripwire', version: 2 },
    { application: 'chef',  version: 1 },
    { application: 'nginx',  version: 3 },
    { application: 'nagios', version: 4 },
    { application: 'nginx',  version: 5 },
    { application: 'nginx',  version: 2 },
    { application: 'apache', version: 2 },
    { application: 'tripwire',  version: 1 },
    { application: 'nginx',  version: 2 },
    { application: 'nagios', version: 2 },
    { application: 'nginx',  version: 1 },
    { application: 'nginx',  version: 3 },
    { application: 'chef', version: 2 }
];

console.log(
    _(stuff)
        .uniqObjs()
        .sortByAll( _.keys( stuff[0] ) )
        .value()
);

/**
 -> [ { application: 'apache', version: 2 },
     { application: 'apache', version: 3 },
     { application: 'apache', version: 4 },
     { application: 'apache', version: 5 },
     { application: 'chef', version: 1 },
     { application: 'chef', version: 2 },
     { application: 'chef', version: 3 },
     { application: 'jenkins', version: 1 },
     { application: 'jenkins', version: 2 },
     { application: 'jenkins', version: 5 },
     { application: 'jenkins', version: 6 },
     { application: 'nagios', version: 1 },
     { application: 'nagios', version: 2 },
     { application: 'nagios', version: 3 },
     { application: 'nagios', version: 4 },
     { application: 'nagios', version: 5 },
     { application: 'nginx', version: 1 },
     { application: 'nginx', version: 2 },
     { application: 'nginx', version: 3 },
     { application: 'nginx', version: 4 },
     { application: 'nginx', version: 5 },
     { application: 'nginx', version: 6 },
     { application: 'tripwire', version: 1 },
     { application: 'tripwire', version: 2 },
     { application: 'tripwire', version: 4 },
     { application: 'tripwire', version: 5 } ]
 */