What problem does it solve? SPFx development with the default Heft, webpack, and gulp toolchain is slow and cumbersome. This Skill builds SharePoint Framework web parts, libraries, and extensions with modern bundlers (Vite, Rsbuild, Rspack), producing installable .sppkg packages without Heft, webpack, or gulp. ## Core Features & Use Cases - Project scaffolding and dev server: Scaffold new SPFx projects with rspfx new or add the plugin to any Vite/Rsbuild/Rspack starter, then run a fast dev server on port 4321 with workbench support. - Packaging to .sppkg: Run rspfx build and rspfx package to generate sharepoint/solution/*.sppkg files ready for SharePoint deployment. - Try mode for existing projects: Add a single vite.config.ts with devTryMode: true to an existing Heft/gulp SPFx project to try the fast dev server without migrating, then run rspfx migrate when ready. - Use Case: You maintain a legacy SPFx web part and want faster iteration. Add the RSPFx plugin in try mode, run the dev server against your tenant, and keep gulp serve for production until you fully migrate. ## Quick Start Use the rspfx skill to scaffold a new React SPFx web part project and start the dev server on port 4321.