Configring node js.

node_modules/core-js/library/modules/es6.reflect.define-property.js

@@ -0,0 +1,22 @@
+// 26.1.3 Reflect.defineProperty(target, propertyKey, attributes)
+var dP          = require('./_object-dp')
+  , $export     = require('./_export')
+  , anObject    = require('./_an-object')
+  , toPrimitive = require('./_to-primitive');
+
+// MS Edge has broken Reflect.defineProperty - throwing instead of returning false
+$export($export.S + $export.F * require('./_fails')(function(){
+  Reflect.defineProperty(dP.f({}, 1, {value: 1}), 1, {value: 2});
+}), 'Reflect', {
+  defineProperty: function defineProperty(target, propertyKey, attributes){
+    anObject(target);
+    propertyKey = toPrimitive(propertyKey, true);
+    anObject(attributes);
+    try {
+      dP.f(target, propertyKey, attributes);
+      return true;
+    } catch(e){
+      return false;
+    }
+  }
+});