Index: frontend/node_modules/object.groupby/polyfill.js
===================================================================
--- frontend/node_modules/object.groupby/polyfill.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
+++ frontend/node_modules/object.groupby/polyfill.js	(revision 9af201e94b5a79beb92a30858fc54de4bc3b9449)
@@ -0,0 +1,7 @@
+'use strict';
+
+var implementation = require('./implementation');
+
+module.exports = function getPolyfill() {
+	return Object.groupBy || implementation;
+};