var fs = require('fs');
var express = require('express');
var app = express();
app.get('/', function (req, res) {
  res.send('hello!')
})
var options = {
  key: fs.readFileSync('./ssl/key.pem'),
  cert: fs.readFileSync('./ssl/cert.pem')
};
require('http2').createServer(options, app).listen(8080);
// require('https').createServer(options, app).listen(8080);// https module works well

_stream_readable.js:505
    dest.end();
         ^
TypeError: undefined is not a function
    at Stream.onend (_stream_readable.js:505:10)
    at Stream.g (events.js:199:16)
    at Stream.emit (events.js:129:20)
    at _stream_readable.js:908:16
    at process._tickCallback (node.js:355:11)