1 files changed, 11 insertions, 0 deletions
diff --git a/node_modules/core-js/features/map/group-by.js b/node_modules/core-js/features/map/group-by.js
new file mode 100644
index 0000000..c4dfdca
--- /dev/null
+++ b/node_modules/core-js/features/map/group-by.js
@@ -0,0 +1,11 @@
+'use strict';
+require('../../modules/es.map');
+require('../../modules/esnext.map.group-by');
+var path = require('../../internals/path');
+
+var Map = path.Map;
+var mapGroupBy = Map.groupBy;
+
+module.exports = function groupBy(source, iterable, keyDerivative) {
+  return mapGroupBy.call(typeof this === 'function' ? this : Map, source, iterable, keyDerivative);
+};