pass bo_client to ember 2.8, adjust for the hack around the aupac-typeahead bug in 2.8 (c.f. https://github.com/aupac/ember-aupac-typeahead/issues/23)
import Ember from 'ember';
export function interval(params) {
var dates = params[0].slice();
return dates.shift() + ( dates.length ? '-' + dates.pop() : '' );
}
export default Ember.Helper.helper(interval);