varBotkit=require('botkit');varWebchatbot=require('botkit-webchat').WebchatIOBot;varcontroller=Webchatbot(Botkit,{debug: false,log: true,receive_via_postback: true,pageId: '123'});varbot=controller.spawn({});// set menucontroller.api.thread_settings.menu([{type: 'postback',title: 'Help',payload: 'clicked-help'}]);// setup server - using botkit setupWebservercontroller.setupWebserver(PORT,(err,webserver)=>{varserver=require('http').Server(webserver);controller.createWebhookEndpoints(server,bot,()=>{console.log('This bot is online!!!');});});// setup server - using expressvarapp=require('express')();varserver=require('http').Server(app);server.listen(80);controller.createWebhookEndpoints(server,bot,()=>{console.log('This bot is online!!!');});