Multiple middleware per route

[kylejreed]

For some APIs, its nice to have the ability to run some pre/post operations on a per-route or per-group basis. For example, you want some public routes, and some protected routes requiring a JWT token. Maybe this can currently be achieved in the Bao.before(), but the DX around it could be improved.

One solution is to allow things like Bao.get() to accept multiple IHandler's.

get(...handlers: IHandler[]) {}

Another step up from that would be to implement a multi-router support like Express or Koa does

const app = new Bao();
const HelloRouter = new Router('/hello');
HelloRouter.before(logger());
HelloRouter.get(protect(), ctx => ctx.sendText('world'));

app.use(HelloRouter); // or app.use('/hello', HelloRouter) if preferred DX

[cngo-github]

Both things would be helpful. I miss Express's modular approach to route handlers, being able to define middlewares per route, and being able to use multiple middleware.