text: const express = require('express');
  
  let http2Request;
  let http2Res;
  if (process.env.HTTP2_TEST) {
    const http2 = require('http2');
    const reqDecorator = require('./requestDecorator');
    const resDecorator = require('./responseDecorator');
    http2Request = reqDecorator(
      Object.create(http2.Http2ServerRequest.prototype)
    );
    http2Res = resDecorator(Object.create(http2.Http2ServerResponse.prototype));
  }
  
  function createApp() {
    const app = express();
    if (process.env.HTTP2_TEST) {
      app.request = Object.create(http2Request, {
        app: { configurable: true, enumerable: true, writable: true, value: app }
      });
      app.response = Object.create(http2Res, {
        app: { configurable: true, enumerable: true, writable: true, value: app }
      });
    }
  
    return app;
  }
  
  module.exports = createApp;
  