@spalger/kibana/src/ui/public/filters/unique.js

Kibana is an open source (Apache Licensed), browser based analytics and search dashboard for Elasticsearch. Kibana is a snap to setup and start using. Kibana strives to be easy to get started with, while also being flexible and powerful, just like Elastic

// Filters out all duplicate items in an array
define(function (require) {
  var _ = require('lodash');

  require('ui/modules')
    .get('kibana')
    .filter('unique', function () {
      return function (arr) {
        var list = _.unique(arr);
        return list;
      };
    });
});