js_of_ocaml
melange

js_of_ocaml | melange | |
---|---|---|
4 | 15 | |
979 | 882 | |
0.9% | 2.3% | |
9.8 | 9.5 | |
5 days ago | 9 days ago | |
OCaml | OCaml | |
GNU General Public License v3.0 or later | GNU General Public License v3.0 or later |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
js_of_ocaml
-
Question about the Reason project in general
In reality, most folks that developed BuckleScript frontends with ReasonML switched to ReScript syntax and are happy with it. Some felt more friction because of their reliance on PPXes or FP-heavy libraries (like Relude) and those people tend to use the Melange fork of BuckleScript or they switched to js_of_ocaml.
-
Is there a statically typed functional programming language that doesn't take purity so seriously?
TL;DR: Reason is, and always has been, independent of ReScript (formerly BuckleScript) and is still actively maintained. If you want to use Reason or OCaml to make native code you can. If you want to compile JS from OCaml or Reason you also still can, but you'll want to use either js_of_ocaml or a BuckleScript fork named Melange that was made in response to the BuckleScript/ReScript people's shenanigans. And if you only care about JS-like syntax and JS output, you can use ReScript.
-
Why is Elm more popular than most of its similar alternatives?
Personally, I just use OCaml and compile to JavaScript with Js_of_ocaml. Js_of_ocaml has been stable and actively maintained for a decade, and I don't have to worry if some superficial syntactic change that affects nothing but ASCII art is going to break my code.
-
query-json: A story of cross-compilation with Reason
The compilation to JavaScript is the sweet section of this blog post since we are using OCaml (under the hood while writing Reason), and it allows us to compile directly to JavaScript using js_of_ocaml.
melange
- OCaml Syntax Sucks
-
Melange for React devs book, alpha release
Hey HN, at Ahrefs we have been working on an online book that hopefully helps React developers get up and running with Melange, an OCaml to JavaScript compiler. You can read more about Melange here: https://melange.re/.
There are still a few chapters that we'd like to add before considering it "complete", but it might be already helpful for some folks out there, that's why we decided to publish it early.
The book uses Reason syntax to implement React components using ReasonReact components. You can read more about both in:
https://reasonml.github.io/
-
Reason and React Meta-Frameworks
In my previous post on trying to use the NextJS App Router and Reason I described some of the problems and limitations of their compatibility with one another. With the release of Melange 2 I decided to see if the new features of Melange 2 could help to increase the compatibility of Reason and the NextJS App Router. I have also documented some of the things learnt after trying Melange (v1) with Astro and Remix.
- GitHub - melange-re/melange: A mixture of tooling combined to produce JavaScript from OCaml & Reason
-
OCaml 5.0 Alpha Release
So it's Reason, not ReasonML which the umbrella project's name, and Rescript is a imcompatible syntax split from the Bucklescript team (that previously transpiled Reason to JS). Bucklescript's new name is... Rescript.
But not everyone agrees with the split and work is being done on Melange to replace Bucklescript : https://github.com/melange-re/melange
Ultimately JsOfOcaml can directly transpile Ocaml to JS.
-
Question about the Reason project in general
In reality, most folks that developed BuckleScript frontends with ReasonML switched to ReScript syntax and are happy with it. Some felt more friction because of their reliance on PPXes or FP-heavy libraries (like Relude) and those people tend to use the Melange fork of BuckleScript or they switched to js_of_ocaml.
-
From TypeScript to ReScript
There is a fork of ReScript that supports ReasonML syntax and with the goal of maintaining Ocaml compatibility: https://github.com/melange-re/melange.
-
From object-oriented JS to functional ReScript
There's also a fork of BuckleScript/ReScript called Melange that guts its build system so that instead of using ninja, it works with more standard tools for the ecosystem, specifically dune and esy. In doing so they managed to also finally get the compiler off of OCaml 4.06: now it can use a newer OCaml compiler and take advantage of four years worth of language and compiler improvements.
- Are Dynamic Languages Going to Replace Static Languages? (2003)
-
Writing custom VSCode extensions in ReasonML
For OCaml and ReasonML your options are js_of_ocaml (mentioned here in ReasonML docs) or a fairly new fork of BuckleScript called melange. They differ in implementation and output, with JSOO taking intermediate bytecode generated by ocamlc and turning it into unreadable JS, vs Melange being a patched compiler that builds more human-readable JS.
What are some alternatives?
reason - Simple, fast & type safe code that leverages the JavaScript & OCaml ecosystems
bs-emotion - BuckleScript bindings to Emotion
rescript - ReScript is a robustly typed language that compiles to efficient and human-readable JavaScript.
query-json - Faster, simpler and more portable implementation of `jq` in Reason
ocaml - The core OCaml system: compilers, runtime system, base libraries
yojson - Low-level JSON parsing and pretty-printing library for OCaml
genType - Auto generation of idiomatic bindings between Reason and JavaScript: either vanilla or typed with TypeScript/FlowType.
jsoo-react - js_of_ocaml bindings for ReactJS. Based on ReasonReact.
haxe - Haxe - The Cross-Platform Toolkit
scriptum - No-Frills Functional Programming Lib Augmenting Javascript/Node.js
dune - A composable build system for OCaml.
