Simple Koa server

[dolezel]

As mentioned on slack main problem with .mjs files there is no tooling for tests now (at least I can't find one), because you can't mix common js (require) with mjs (import).
Solutions I see:

• wait for node.js to enable mix of these two
• wait for some standard test library to provide support for testing mjs (but e.g. mocha does not want to do it and want to wait for (1) - Support ES6 style tests without transpiler usage mochajs/mocha#3006)
• write some our microlibrary for testing
• transpile code through babel for testing
• do some research on https://github.com/standard-things/esm which seems to be promising to do some bridge between common js and mjs

[branoholy]

Everything LGTM except the list and get methods. Wouldn't it be better to have separated methods that work directly with data and are not useful for router purposes only?

For example, there could be methods like:

const getUser = ({ id }) => ({ id, name: `user ${id}` });
const getUsers = () => [getUser(1), getUser(2)];

and for simple routes, there could be something like this:

const asRoute = fn => ctx => { ctx.body = fn(ctx.params); };

that would be used as:

router.get('/', asRoute(getUsers));
router.get('/:id', asRoute(getUser));

Of course, more complicated routes could have their own functions (like your list and get):

export default (ctx) => {
  const users = getUsers();
  // ... do something with users
  ctx.body = users;
};

[dolezel]

👍 Yep, sure, I didn't think much about routes and models so far.
I have a solution which I'm using now, but I'm not much satisfied with it...