server crashes when cors is added

Describe the bug Passing const cors as an argument to server and sending a postmethod to the defined endpoint, throws internal server error and, middleware error on the console

To Reproduce Steps to reproduce the behavior:

1. npm i server
2. touch index.js
3. Add this

// Include it and extract some methods for convenience
const server = require('server');
const { get, post } = server.router;

const cors = [
    ctx => header("Access-Control-Allow-Origin", "*"),
    ctx => header("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept"),
    ctx => ctx.method.toLowerCase() === 'options' ? 200 : false
  ];

// Launch server with options and a couple of routes
server({ port: 8080 }, cors, [
  get('/', ctx => 'Hello world'),
  post('/demo', ctx => console.log(ctx.data))
]);

4 node index.js 5. Send a post request to: http://localhost:8080/demo

Expected behavior Some data to returns. Instead getting errors.

[franciscop]

I didn’t notice that in my first read, but that seems to be the case. There are two issues though:

• The error is not clear enough. I think adding the path and method would be much more clear, like The POST /demo request did not return anything.
• That example is right in the documentation. All documentation examples should be working

[SidneyNemzer]

That error is unrelated to CORS, it’s complaining that the /demo route didn’t return any data to the client