Configring node js.

node_modules/core-js/library/modules/es6.reflect.set.js

@@ -0,0 +1,31 @@
+// 26.1.13 Reflect.set(target, propertyKey, V [, receiver])
+var dP             = require('./_object-dp')
+  , gOPD           = require('./_object-gopd')
+  , getPrototypeOf = require('./_object-gpo')
+  , has            = require('./_has')
+  , $export        = require('./_export')
+  , createDesc     = require('./_property-desc')
+  , anObject       = require('./_an-object')
+  , isObject       = require('./_is-object');
+
+function set(target, propertyKey, V/*, receiver*/){
+  var receiver = arguments.length < 4 ? target : arguments[3]
+    , ownDesc  = gOPD.f(anObject(target), propertyKey)
+    , existingDescriptor, proto;
+  if(!ownDesc){
+    if(isObject(proto = getPrototypeOf(target))){
+      return set(proto, propertyKey, V, receiver);
+    }
+    ownDesc = createDesc(0);
+  }
+  if(has(ownDesc, 'value')){
+    if(ownDesc.writable === false || !isObject(receiver))return false;
+    existingDescriptor = gOPD.f(receiver, propertyKey) || createDesc(0);
+    existingDescriptor.value = V;
+    dP.f(receiver, propertyKey, existingDescriptor);
+    return true;
+  }
+  return ownDesc.set === undefined ? false : (ownDesc.set.call(receiver, V), true);
+}
+
+$export($export.S, 'Reflect', {set: set});