ultra@v0.8.0

ULTRA

Modern Streaming React Framework

deno compatibility

Ultra is a web framework that leans hard into your browser’s native features. Embrace the future of ES Modules, Import Maps, and Web Streams. All while supporting some of the non-standards that many normal people love for some reason (JSX and TypeScript).

It’s driven by the following hot-takes:

ESM is non-negotiable in {currentYear}
SSR is non-negotiable in {currentYear}
Bundling is an anti-pattern in {currentYear}
Data can be requested anywhere, and is accessible on the server, always
Lazy routing with dynamic imports trumps FS routing
Less magic in tooling and frameworks is a good thing
Simplify your workflow and tech stack at all costs - life is too short
Streams are neat

👯 Community

We now have a Discord. Come say HI.

🙌 next

We are working towards the next milestone. v1.0.0 🗿

🚧 v0.8.0

Heaps of updates in v0.8.0! Because of these new features. Please ensure you are using at least Deno v1.20.3

Vendored dependencies! We have a script that can take your CDN deps and make them local.
API routes! (Thanks @Industrial)
Option to disable streaming 😱. Passing the env disableStreaming=1 will force Ultra to use a custom renderToString equivalent - returning a fully resolved, suspense compatible, html page! (BETA)
Websocket refresh in dev mode. Ultra will restart on local changes.
Full support for react@18: There were some updates to how streams are handled in the latest rc.
Tighter integration with Deno config file. Specifiying your importMap in deno.json is required
Removal of makefile in favour of deno task
Legacy: We also export an Oak compatible ultraHandler for support inside of an pre-existing Oak project

Notes on using Deno Deploy

We aim to support Deno Deploy as a first class target for Ultra, but there are a few things to consider before deploying:

Dynamic imports are not supported, this means using React Lazy imports will not work. If you try to deploy anything with dynamic imports, the project will fail.
Recursive requests are not supported, if using API routes, there is a good chance any requests made in your components may fail during SSR.

NOTE: These above issues are not a limitation when deploying to a service like Fly.io, and if you require either of the above, we recommend using Fly.io with a custom dockerfile.

✨ Wishlist

As we await the official release of React 18, here some things we are interested in for the future of JS and/or Ultra:

Better Deno support in Vercel
React 18 native ESM exports
Native import maps: Browser support for import maps is still a bit sketchy. Instead of using import map polyfills, Ultra inlines your imports directly into the served ES modules.
Dynamic import support on Deno Deploy
Native CSS modules

Thank you for going on this journey with us.