Reflect 4 Proxy _hot_ Info

UserService proxy = (UserService) Proxy.newProxyInstance( UserService.class.getClassLoader(), new Class[]UserService.class, new LoggingHandler(realService) );

const proxy = new Proxy({}, set(target, key, value, receiver) if (key === "age" && value < 0) throw new Error("Age invalid"); return Reflect.set(target, key, value, receiver); reflect 4 proxy