Just use https://github.com/wobsoriano/elysia-autoroutes

elysia-file-system-router.ts

import Elysia from "elysia";

const router = new Bun.FileSystemRouter({
    style: "nextjs",
    dir: import.meta.dir,
});

export const get = () => 'OK';

export default new Elysia()
    .all('*', async (context) =>  {
        const relativePath = context.path;
        const match = router.match(relativePath);
        const method = context.request.method.toLowerCase();
        console.log(relativePath);
        if (match) {
            const route = await import(match.filePath);
            return route[method](context);
        }
        return { 
            method,
            path: context.path,
            relativePath,
            params: context.params,
            match,
        }
    })