File-System Routingfor Modern Express.js Applications
Type-safe route configuration through directory structure
with built-in middleware support and automatic endpoint discovery
routes/user/[id].ts
import { RequestHandler } from 'express';
export const get: RequestHandler = (req, res) => {
res.json({ userId: req.params.id });
};File-System Routing
Automatic route mapping from directory structure
routes/users/[id].ts → /users/:idMiddleware Support
File/directory-level middleware handling
_middleware.tsDynamic Parameters
Named parameter handling with validation
[param] → req.params.paramType Safety
TypeScript-first architecture
export const get: RequestHandlerError Handling
Centralized error handling
_error.tsHTTP Methods
Native method handlers
export const get/post/put/patch/delete