--- /dev/null
+var isPrototypeOf = require('../../internals/object-is-prototype-of');
+var method = require('../array/virtual/group-by');
+
+var ArrayPrototype = Array.prototype;
+
+module.exports = function (it) {
+ var own = it.groupBy;
+ return it === ArrayPrototype || (isPrototypeOf(ArrayPrototype, it) && own === ArrayPrototype.groupBy) ? method : own;
+};