Valdi NoteBeta Status: Valdi has been widely used in Snap's production apps for the last 8 years. We're calling this a beta because our tools and documentation need more battle testing in the open source world. Valdi will exit beta when we're happy with the developer experience. Valdi is a cross-platform UI framework that delivers native performance without sacrificing developer velocity. Write your UI once in declarative TypeScript, and it compiles directly to native views on iOS, Android, and ...