proposal-pattern-matching
rescript-compiler
proposal-pattern-matching | rescript-compiler | |
---|---|---|
67 | 95 | |
5,344 | 6,472 | |
0.9% | 0.9% | |
9.0 | 9.5 | |
9 days ago | 3 days ago | |
HTML | OCaml | |
MIT License | GNU General Public License v3.0 or later |
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proposal-pattern-matching
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Coming to grips with JS: a Rubyist's deep dive
Note, however, that there is a proposal to add pattern matching to JS.
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Level up your Typescript game, functionally - Part 2
There's an ECMAScript proposal that is in the works to add this feature to the language! It's going to look something like this.
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Building React Components Using Unions in TypeScript
More importantly, TypeScript typically commits to build things into itself when the proposal in JavaScript reaches Stage 3. The pattern matching proposal in JavaScript is Stage 1, but depends on many other proposals as well that may or may not need to be at Stage 3 as well for it to work. This particular proposal is interested on pattern matching on JavaScript Objects and other primitives, just like Python does with it’s native primitives. These are also dynamic types which helps in some areas, but makes it harder than others. Additionally, the JavaScript type annotations proposal needs to possibly account for this. So it’s going to be awhile. Like many years.
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Explicit Software Design. Preliminary Conclusions
For true™ functional programming in JS, native pattern matching and partial function application are missing (at least for now: 1, 2). For proper OOP, it lacks real interfaces and compile-time dependency injection.
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TypeScript Is Surprisingly OK for Compilers
The proposal for pattern matching syntax seems more akin to what they're looking for.
https://github.com/tc39/proposal-pattern-matching
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[AskJS] C# in every Node.js job posting?
There's a proposal to add something like that to JavaScript but it's been stuck in limbo since 2017 although there are libraries like ts-pattern which implement it already.
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[AskTS] What do you think will be the future of runtime type checking?
I'll admit, it is easy to assert that the TypeScript language should not be involved in the matters of packages but I also wonder if we're moving towards a point where interfaces will be as common as namespaces and whether or not it would be sensible for the language to incorporate such type assertions into the language formally, after all, it already compiles to various forms of JavaScript and there is a stage 1 proposal submitted to the TC39 committee to give JavaScript pattern matching. If adopted, wouldn't it make sense to allow TypeScript to compile a type into a type guard for the native JavaScript pattern matcher?
- Updates from the 96th TC39 meeting
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Mostly adequate guide to FP (in JavaScript)
Both are active tc39 proposals :)
https://github.com/tc39/proposal-pipeline-operator - Stage 2
https://github.com/tc39/proposal-pattern-matching - Stage 1
Hopefully we get both in the next couple of years.
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CoffeeScript for TypeScript
We often add promising TC39 proposals into Civet so people can experiment without waiting.
We've added https://github.com/tc39/proposal-pipeline-operator, a variant of https://github.com/tc39/proposal-pattern-matching, a variant of https://github.com/tc39/proposal-string-dedent and others.
Since our goal is to be 99% compatible with ES we'll need to accommodate any proposals that become standard and pick up anything TC39 leaves on the table (rest parameters in any position, etc.)
rescript-compiler
- Borgo is a statically typed language that compiles to Go
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Tired of Typescript? Check out ReScript!
ReScript is a fully typed language with an easy to understand JS like syntax, blazing fast compiler, that compiles to JavaScript. You can easily drop it into an existing project, and there is even a way to generate TypeScript types if you want to add it to a TypeScript project!
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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.
[1] https://rescript-lang.org/
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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]
[1] https://rescript-lang.org/
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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.
What are some alternatives?
fp-ts - Functional programming in TypeScript
svelte-wasm
package.elm-lang.org - website for browsing packages and exploring documentation
Elm - Compiler for Elm, a functional language for reliable webapps.
content - The content behind MDN Web Docs
TypeScript - TypeScript is a superset of JavaScript that compiles to clean JavaScript output.
ecma262 - Status, process, and documents for ECMA-262
Fable: F# |> BABEL - F# to JavaScript, TypeScript, Python, Rust and Dart Compiler
proposal-pipeline-operator - A proposal for adding a useful pipe operator to JavaScript.
purescript - A strongly-typed language that compiles to JavaScript
proposal-record-tuple - ECMAScript proposal for the Record and Tuple value types. | Stage 2: it will change!
reason - Simple, fast & type safe code that leverages the JavaScript & OCaml ecosystems