webpack-dev-middleware

This is an express-style development middleware for webpack that serves files emitted from webpack in memory (not written to disk) and delays requests until compilation completes. This package is a direct fork/rename of webpack-dev-middleware (the original) but maintained under the Rsbuild project. Version 0.3.0 supports Node >= 18.12.0, webpack 5 as peer dependency, and ships TypeScript types. Unlike webpack-dev-server it works with custom Node.js HTTP servers like Express. Release cadence is moderate with breaking changes possible before 1.0. Key differentiator: provides fine-grained control over serving webpack assets in custom server setups without extra overhead.