Sample server to run Alexa skill on your machine, to be used with ngrok

server.js

const express = require('express');
const bodyParser = require('body-parser');

const handler = require('./index').handler;

function CreateHandler(handler) {
    return (req, res) => {
        handler(req.body, null, (err, result) => {
            if (err) {
                return res.status(500).send(err);
            }
            return res.status(200).json(result);
        });
    };
}

// create server
const server = express();
const listener = server.listen(process.env.port || process.env.PORT || 8080, function () {
    const { address, port } = listener.address();
    console.log('%s listening to %s%s', server.name, address, port);
});

// parse json
server.use(bodyParser.json());

// connect the lambda functions to http
server.post("/", CreateHandler(handler));