How to use the botkit.Botkit function in botkit

// const adapter = new HangoutsAdapter({
//     // enable_incomplete: true,
//     token: process.env.GOOGLE_TOKEN,
//     google_auth_params: {
//         credentials: JSON.parse(process.env['GOOGLE_CREDS'])
//     }
// });

// const adapter = new TwilioAdapter({
//     // enable_incomplete: true,
//     // twilio_number: process.env.TWILIO_NUMBER,
//     // account_sid: process.env.TWILIO_ACCOUNT_SID,
//     // auth_token: process.env.TWILIO_AUTH_TOKEN,
// });

const controller = new Botkit({
    debug: true,
    webhook_uri: '/api/messages',
    disable_console: true,
    adapter: adapter,
    // disable_webserver: true,
    // adapterConfig: {
    //     appId: process.env.APP_ID,
    //     appPassword: process.env.APP_PASSWORD
    // },
    storage
});

const cms = new BotkitCMSHelper({
    uri: process.env.cms_uri,
    token: process.env.cms_token,
});

const express = require('express');
const WatsonMiddleware = require('botkit-middleware-watson').WatsonMiddleware;

const middleware = new WatsonMiddleware({
  iam_apikey: process.env.ASSISTANT_IAM_APIKEY,
  workspace_id: process.env.WORKSPACE_ID,
  url: process.env.ASSISTANT_URL || 'https://gateway.watsonplatform.net/assistant/api',
  version: '2018-07-10'
});

// Configure your bot.
const adapter = new SlackAdapter({
  clientSigningSecret: process.env.SLACK_CLIENT_SIGNING_SECRET,
  botToken: process.env.SLACK_TOKEN,
});
const controller = new Botkit({
    adapter,
    storage: new MemoryStorage(),
    // ...other options
});


controller.hears(['.*'], ['direct_message', 'direct_mention', 'mention'], async (bot, message) => {
  console.log('Slack message received');
  await middleware.interpret(bot, message);
  if (message.watsonError) {
    console.log(message.watsonError);
    await bot.reply(message, message.watsonError.description || message.watsonError.error);
  } else if (message.watsonData && 'output' in message.watsonData) {
    await bot.reply(message, message.watsonData.output.text.join('\n'));
  } else {
    console.log('Error: received message in unknown format. (Is your connection with Watson Assistant up and running?)');