rebuildjs

rebuildjs is a reactive esbuild-based build tool and development server for multi-page apps (MPAs), offering a simple, hackable alternative to Vite. It provides functions for both dev (with file watching, incremental builds, and a built-in HTTP server) and production builds. Currently at v0.71.1, it is actively developed with frequent releases. Key differentiators: full MPA focus, minimal configuration, and integration with `rmemo` for reactive state. Types are included. Requires `esbuild` as a peer dependency. The companion server framework `relysjs` (ElysiaJS-based) ties it together for app server usage.