What web frameworks does Firebase App Hosting support?

Firebase App Hosting is generally available with officially maintained, zero-configuration support for Angular and Next.js, while broader JavaScript framework compatibility is enabled through community adapters and a fallback Node.js Cloud buildpack. Nitro-based frameworks such as Nuxt, Analog, SolidStart, and TanStack Start can deploy through a community adapter, and an Astro adapter is under development, while framework authors can simplify deployments by producing an `.apphosting/bundle.yaml` file that specifies build, runtime, artifact, and Cloud Run settings. Even without an adapter, many Node.js applications can run if they provide a build script and an identifiable server startup configuration, including SvelteKit, React Router with SSR, Express, and Hono, provided servers listen on Cloud Run’s injected `PORT` variable. Static single-page applications can also be served through App Hosting using a static server such as Superstatic, though Firebase Hosting remains the recommended option for static sites, and CDN caching can improve delivery performance. For applications outside the supported build process, developers can build their own containers and deploy virtually any web server or language through App Hosting’s Terraform support.

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