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e_d_g_a_r
opam version is a little bit behind curve, use `opam pin add -y reactjs git@github.com:fxfactorial/ocaml-reactjs.git`
magnumkarter
I've been learning OCaml and hoped I could find something like this. Thank you.
e_d_g_a_r
Thanks! Star it if you like it, use it and open issues if any arise.
btown
For those interested in this, https://github.com/bloomberg/bucklescript is an alternate (albeit new) OCaml to JS compiler. There's already talk about supporting JSX syntax: https://github.com/bloomberg/bucklescript/issues/162
Scarbutt
Differences from js_of_ocaml (not an easy find)

Js_of_ocaml takes lowlevel bytecode from OCaml compiler, BuckleScript takes the highlevel rawlambda representation from OCaml compiler

Js_of_ocaml focuses more on existing OCaml eco-system(opam) while BuckleScript's major goal is to target npm

Js_of_ocaml and BuckleScript have slightly different runtime encoding in several places, for example, BuckleScript encodes OCaml Array as JS Array while js_of_ocaml requires its index 0 to be of value 0.

Both projects are improving quickly, so this can change in the future!

rajington
I haven't really gotten into much ML yet, and I'm curious to hear what people knowledgeable with OCaml think about http://facebook.github.io/reason/

The name makes it impossible to research to find any blog posts or anything, but the familiar syntax alone might make it at least a first step for me.

e_d_g_a_r
Speaking for myself, I think Reason is a very good thing and rewriting this in Reason or adding a Reason layer is a goal/TODO.
rajington
That's awesome and great work.

I know it's dumb that the thing holding me back from OCaml is the syntax, but after giving up on an Om project I've come to accept js will always be the greatest common denominator.

e_d_g_a_r
I don't blame you, ES6 can be stupid concise and enjoyable. I practice most of my algorithms prep coding in it.
lmm
Maybe consider Scala? It's an ML family language with more familiar syntax, and also has a Javascript backend.
bsimpson
As I recall, Reason is the current project of React originator Jordan Walke and React contributor Cheng Lou. I wouldn't be at all surprised to see a Facebook project emerge that allows you to author React apps in Reason with Bucklescript.
LeonidasXIV
I don't claim to be knowledgeable with OCaml, but I use it on and off since a couple of years and wrote about my thoughts when it was first released[0]. tl;dr: don't like the syntax, for the most part it's worse than OCaml itself. The rest is alright and helps the OCaml ecosystem as well, the focus on better tooling is good.

[0]: https://xivilization.net/~marek/blog/2016/05/19/reason-lets-...

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ilostmykeys
Why?
klibertp
A sane, powerful type system is actually enough of a rationale and a selling point, at least for me.

Also, allowing side-effects while still providing the mentioned type system makes it potentially much easier to integrate with existing JS code.

cies
Another reason for it being "much easier to integrate with existing JS code" is strict evaluation.

Haskell is lazy, which means using GHCJS to compile it to JS produces code full of explicit thunks (think of promises). Both Elm and PureScript are compile-to-JS-languages that inherit a lot from Haskell, but not it's laziness.

jackmott
You should give one of the OCaml languages a try. OCaml or F#. They have some very pleasant properties.

Generally this whole idea would make sense when you are writing a web application and you are using OCaml or F# on the server and want to use it for the client code too. Same justification for using node.js, but in reverse.

But I know that the Ionide plugin for Atom and VSCode is written in F# compiled to javascript just because the developers like to code in F#

ilostmykeys
I got downloaded for asking Why. Seriously sad.
xamlhacker
In the same vein, there are also some F# to JS compiler projects such as Funscript (http://funscript.info/) and Fable (https://github.com/fsprojects/Fable). F# is an open-source Ocaml inspired language for .net.
piaste
Also plugging Websharper (http://websharper.com/) which is a full web framework that includes a F# to JS compiler to write the client-side part of the code.

Though you can use just the compiler inside a regular ASP.NET MVC project, if you so choose.

galfarragem
Isn't this a less polished version of Elm?
e_d_g_a_r
This has nothing to do with elm..
jiyinyiyong
ClojureScript is better than that, except for the type system.
sgrove
It's probably worth elaborating your opinion here. I've used ClojureScript heavily and feel I have a good sense of the comparison, but someone else reading your comment wouldn't be any better informed for it.

I'm genuinely curious as to your comparison though, would love to read it!