Fable 4 2022 update#
Fable 4 2022 code#

And since Fable 3 made it easier to extend Fable, Dag has been working on adding Python support, which is currently very close to JS in unit test parity. The first attempt was Expression, a library that lets you use many of F#/Functional patterns with Python. Pythonĭag Brattli strongly believes that F# can make for a better Python and has been working on better integration between the languages for several years now. So if you're using ReactComponent attribute in your project, it won't work yet with Snake Island. But there won't be many JS new features (except for JSX compilation, see below) and compiler plugins do need to be updated. In principle, everything should work the same as we're aiming for no breaking changes.

Fable 4 2022 update#

Please see below for specific details about each of the new language targets and how you can try each one.ĭon't update your current Fable JS projects just yet. This is great too and we hope it can also happen in the future for Python, Rust or Dart! Some of them have fully crossed the bridge and become Typescript/JS experts. Although it makes for a good catch-phrase, Fable wasn't born to make F# 'the One to rule them all', instead we'll be most happy if Fable can be a bridge for F# developers to explore other worlds beyond. We also believe that, same as it happened with JS, the interaction with other ecosystems and communities is tremendously beneficial for the F# language and developers.

Fable 4 2022 code#

The ultimate goal is to convert F# into a super-powerful DSL you can use to design your programs and algorithms and still have the freedom to choose the platform you want to run your code on. If you've been following us on Twitter you probably know this is the most ambitious Fable release to date, extending the compilation targets for F# beyond JS, to include languages like Python, Rust or Dart. Today we're announcing the alpha release of Snake Island, codename for Fable 4. Hey there everybody! It's been a while without Fable news but we're bringing you something today that we hope will get you excited.