404 Not found, when middleware is undefined

[Durounseki]

Hi, while working on my app, that uses Hono with a Cloudflare worker, I found some behaviour that appeared strange to me. The following is a simplified example of my codebase

import {Hono} from 'hono'
const app = new Hono();

app.get('/test1', test, (c) => {
	return c.json('passed!');
});

const test = async (c, next) => {
	console.log('testing...');
	await next();
};

app.get('/test2', test, (c) => {
	return c.json('passed!');
});

export default app;

When I send a "GET" request to "/test1" I get a 404 Not Found Error, but when I send a "GET" request to "/test2", "testing..." is logged to the console and I get "passed!" on the response. At the beginning I thought hoisting would prevent this issue, but then I realised that by using const test = async (c,next)... instead of async function test(c,next)... I was preventing test from being hoisted. When I change the definition of test then both endpoints work.

It still caught my attention that the '/test1' endpoint is not registered when the middleware test is undefined. Is this the intended behaviour?

[EdamAme-x]

We can make simple reproduction code.

import { Hono } from 'https://esm.sh/hono'

const app = new Hono();

app.get('/test', undefined, (c) => c.text("Hono is hot"));

export default app;

[EdamAme-x]

Hi @Durounseki
It seems to be expected result.
https://github.com/honojs/hono/blob/main/src/compose.ts#L69-L73