js-proposal-algebraic-effects VS Fable: F# |> BABEL

I have to admit: you're perfectly right here. React of course always relied on mutable state in it's implementation – just so we don't have to. I derailed a lot here to keep this funny thread going ;) I'm still not with you on your definition of "functional", since you treated it synonymously with "purely functional". Functional means just made by applying and composing functions, and react UI is created exactly like that. There is an awesome algebraic effects proposal[1], which will hopefully will be added to JavaScript one day, then react will make use of it to become purely functional.

1: https://github.com/macabeus/js-proposal-algebraic-effects

Super interesting, there is a proposal to add this to JavaScript and several languages that use this, unison, koka & eff. I had no idea this was even a thing!

Ok I was wrongly assuming that panic was expecting an error type, in fact it's an interface{}.

> Your use of exceptions for flow control (i.e. goto) is considered harmful

Exceptions are a way to delegate error handling to the caller by giving them informations about the unexpected behavior. It implies that the expected behavior is the "happy path" (everything went well) and any deviations (errors) is unexpected.

This is far from a goto because you can have `try/finally` blocks without catch (or defer in golang).

Also, exceptions are just a kind of algebraic effects that do not resume. There was a proposal to JS for this: https://github.com/macabeus/js-proposal-algebraic-effects

This is also easier to test. assertRaises(ErrorType, func() { code... })

Almost every Go library I've seen just return an error (which is just a string), you'd need to parse it to assert that the correct error is returned in special conditions.

This conversation could be referring to https://fable.io/

Other than that, the question is indeed strange and I agree with your statements.

NOTE: For larger codebases with more history it is likely that the Program.fs file will have a lot of orchestration and logic as well. given that it is often where everything clashes and starts, for example the Fable Entrypoint is in Entry.fs and it contains a lot of code. The best you can do always is to start at the bottom of the file and work your way up. Remember: Everything at the bottom uses what has already been defined at the top so there are no circular dependencies or random functions/types at the bottom that can trip you off, everything comes from the top!

I am a big fan of going with web components + plain (build-less) javascript whenever possible, so it is not surprising that I often favor things like the Fable Compiler, where I can target my F# code directly to javascript and be as close to the native JS experience as possible, both for interop concerns and for ecosystem integration.

Fable compiler - https://fable.io/

The F# community is very friendly (these sub-communities as well), and they have plenty of good issues/opportunities to contribute OSS work to across any skill level.

Phosphor isn't hiring right now, but we expect to begin a search for FE/interface engineers over the next few month. Email [email protected] for anyone interested.

Naturally I’d recommend using a better language such as ReScript or Elm or PureScript or F#‘s Fable + Elmish, but “React” is the king right now and people perceive TypeScript as “less risky” for jobs/hiring, so here we are.

Stuff like this: https://github.com/fable-compiler/Fable/issues/1822

It just seems like an incredibly ambitious project that appears to have very little equal but is mainly worked on by a handful of people but no corporate backing. I get the feeling that if you want to use it, you'll either be the only one doing what you're doing or among just a few people. I already use F# and feel this way about the core language itself.

F# is also part of the OCaml family, has a great to-JS transpiler (https://fable.io/) and F# code can also be used in .NET projects.

I have heard many good things about https://fable.io/ Fable converts F# code to JavaScript. There are currently 407 packages available for interacting with existing JavaScript packages and frameworks.