melange
rescript-compiler
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melange | rescript-compiler | |
---|---|---|
14 | 93 | |
737 | 6,411 | |
3.7% | 1.2% | |
9.7 | 9.5 | |
8 days ago | 4 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.
melange
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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:
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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.
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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.
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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.
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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.
- Are Dynamic Languages Going to Replace Static Languages? (2003)
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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.
- Using `let.opt` in Rescript with latest Reason/OCaml
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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.
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JavaScript file watching with Reason & Rescript in Dune
While banging my head against the wall trying to understand the Dune build system used with OCaml and the Melange project I came across these great simple videos by @TheEduardoRFS.
rescript-compiler
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Learning Elm by porting a medium-sized web front end from React (2019)
If you’re a front-end developer, you should checkout ReScript[1], supposedly a JS-oriented successor of ReasonML and developed by the ReasonML team.
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ReScript: Rust like features for JavaScript
ReScript is "Fast, Simple, Fully Typed JavaScript from the Future". What that means is that ReScript has a lightning fast compiler, an easy to learn JS like syntax, strong static types, with amazing features like pattern matching and variant types. Until 2020 it was called "BuckleScript" and is closely related to ReasonML.
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Ask HN: Interest in a Rust-Inspired Language Compiling to JavaScript?
As another commenter has already suggested, ReasonML has a lot of what you described here.
However, modern JS-oriented toolchain for ReasonML is called ReScript and you can learn more here: https://rescript-lang.org/
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How does one write React apps in a purely functional style without making the entire codebase a mess?
ReScript (before BuckleScript) https://rescript-lang.org/ is a functional language that can also use OOP. Ideal for Javascript and Typescript projects, React and servers. It integrates perfectly with Javascript and Typescript code https://rescript-lang.org/docs/react/latest/introduction
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Show HN: EdgeDB Cloud and 4.0 with FTS and Auth
Thank you!
We invited Gabriel because we think what he's building is pretty cool. It showcases so much about EdgeDB: its type system, data model, query language, composability, introspection, etc.
I'm not a ReScript user myself. What I know is that it's a functional programming language somewhat heavily inspired by OCaml. Their website goes into details [1]
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Strong typing, a hill I'm willing to die on
You might want to look into ReScript (https://rescript-lang.org/). It has strong static typing with type inference, and it is very fast.
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Building React Components Using Unions in TypeScript
This is because a “Tagged Union”, another word for TypeScript’s Discriminated Union, is a way to “tag which one is in use right now… we check the tag to see”. Just like when you’re shopping and check the tag of a piece of clothing to see what the price is, what size it is, or what material it’s made out of. Languages like ReScript compile many of their Unions (called Variants) to JavaScript Objects that have a tag property.
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Converting a JavaScript React app to a ReScript React app.
ReScript is "Fast, Simple, Fully Typed JavaScript from the Future". Let's take a look at how we can add it to an existing React project.
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Way to High Confidence: The Ideal Testing Trophy
REscript
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Domain Modelling in the Cloud & AWS CDK
Ultimately, Dhall wasn’t verbose enough nor was I Dhall ninja, but something like TypeScript or ReScript probably would have been better.
What are some alternatives?
svelte-wasm
Elm - Compiler for Elm, a functional language for reliable webapps.
TypeScript - TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
Fable: F# |> BABEL - F# to JavaScript, TypeScript, Python, Rust and Dart Compiler
js_of_ocaml - Compiler from OCaml to Javascript.
purescript - A strongly-typed language that compiles to JavaScript
reason - Simple, fast & type safe code that leverages the JavaScript & OCaml ecosystems
openapi-generator - OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)
tsdx - Zero-config CLI for TypeScript package development
ocaml - The core OCaml system: compilers, runtime system, base libraries
dream - Tidy, feature-complete Web framework