rspack-dev-middleware

A Koa 2 middleware for Rspack development and hot reloading. Current stable version 0.4.0, released under Apache-2.0 license with weekly releases. Supports ESM-only with TypeScript types. Key differentiators: designed specifically for Koa 2, integrates with memfs for in-memory file systems, and provides built-in hot reloading without Webpack dependencies. Requires Node.js >=18 and peer deps @rspack/core >=1.0.7 and koa >=2.0.0. Tree-shakable with no side effects.