Migrate d3js to v4 and correct d3js visualisations i.e. bug 3.20. Breadcrumb navigation for the language treemap has been improved
import Ember from 'ember';
export function ifAnd(params) {
return params.every(element => Array.isArray(element) ? element.length : !!element);
}
export default Ember.Helper.helper(ifAnd);