Configring node js.

node_modules/core-js/modules/es7.reflect.get-metadata.js

@@ -0,0 +1,17 @@
+var metadata               = require('./_metadata')
+  , anObject               = require('./_an-object')
+  , getPrototypeOf         = require('./_object-gpo')
+  , ordinaryHasOwnMetadata = metadata.has
+  , ordinaryGetOwnMetadata = metadata.get
+  , toMetaKey              = metadata.key;
+
+var ordinaryGetMetadata = function(MetadataKey, O, P){
+  var hasOwn = ordinaryHasOwnMetadata(MetadataKey, O, P);
+  if(hasOwn)return ordinaryGetOwnMetadata(MetadataKey, O, P);
+  var parent = getPrototypeOf(O);
+  return parent !== null ? ordinaryGetMetadata(MetadataKey, parent, P) : undefined;
+};
+
+metadata.exp({getMetadata: function getMetadata(metadataKey, target /*, targetKey */){
+  return ordinaryGetMetadata(metadataKey, anObject(target), arguments.length < 3 ? undefined : toMetaKey(arguments[2]));
+}});