koa-router2

Koa 2 mini router

No kidding, yet another flavour of Koa 2 routing is here.

Everything works pretty close to your expectations:

// router.js
 
import Router from 'koa-router2';
 
const router = new Router();
 
export default router;
 
// Simple routes
 
router.get('/', async ctx => ctx.body = 'Hi');
 
// URL params
 
router.get('/users/:id', async ctx => {
   const userId = ctx.params.id;
   const user = await User.findOne(userId);
   ctx.body = user.toJSON();
});
 
// Express-style middleware routes
 
router.use('/auth', requireAuth());
 
router.use('/auth/login', async (ctx, next) => {
   // do stuff
   return next();
});
 
router.get('/auth/login', async ctx => {
  // both requireAuth and "do stuff" were executed
  // ...
});
 
// Multiple routers can be composed (with or without prefix)
 
router.use('/users', usersRouter);
 
router.use(pagesRouter);

Routers are mounted to Koa application as middlewares using .routes() method:

// app.js
import Koa from 'koa';
import router from './router';
 
const app = new Koa();
 
// Mount router
app.use(router.routes());

See test for more examples. Have fun!