match-iz
proposal-pattern-matching
match-iz | proposal-pattern-matching | |
---|---|---|
11 | 67 | |
133 | 5,353 | |
- | 1.0% | |
6.6 | 9.0 | |
16 days ago | 16 days ago | |
JavaScript | HTML | |
MIT License | MIT License |
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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.
match-iz
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match-iz: a tiny pattern-matching library
Thank you, and it does!
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Javascript futures and Result monads belong together
I do enjoy a bit of monad'ing. I often use this minimal Maybe in projects, inspired by Folktale and Crocks.
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Defeating Javascript Obfuscation
I've done a little myself with eslint-plugins and codemods and found it useful for avoiding repetition and ?.. There's a TC39 proposal that's in the works, but I got impatient and wrote a small lib that tries to provide the same functionality.
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Upcoming ECMAScript features I'm excited about
I'm doing my part, though!
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[AskJS] favorite JavaScript library
Honestly, my own. Not that I can take credit for the fundamental shape of the API -- it's directly inspired by the TC39 pattern-matching proposal. Still, I use it all the time and can't wait for the day when I don't have to.
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oxide.ts - my Rust-inspired Option/Result and match library - Version 1.0 Release
Slightly related is this pattern matching library I saw the other week, you might be interested: https://github.com/shuckster/match-iz
- match-iz: A tiny pattern-matching library in the style of the TC39 proposal
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Does JavaScript have an equivalent for this?
JavaScript doesn't have that natively yet, but you can get close using a library:
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[AskJS] Why does our community hate Operator Overloading?
While pattern-matching doesn't exist in the language yet, there are many libraries on NPM for it, and it looks applicable for your own use-cases. (Full disclosure: The above example is from my own.)
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Pattern matching = switch++
After learning about the exciting, but sadly only Stage 1 proposal for pattern-matching in JavaScript, I felt compelled to write a library that tries to, erm, match it as closely as I could:
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.)
What are some alternatives?
Zeronode - Zeronode - minimal building block for NodeJS microservices
fp-ts - Functional programming in TypeScript
bhai-lang - A toy programming language written in Typescript
package.elm-lang.org - website for browsing packages and exploring documentation
proposal-operator-overloading
content - The content behind MDN Web Docs
ohm - A library and language for building parsers, interpreters, compilers, etc.
ecma262 - Status, process, and documents for ECMA-262
crocks - A collection of well known Algebraic Data Types for your utter enjoyment.
proposal-pipeline-operator - A proposal for adding a useful pipe operator to JavaScript.
proposal-record-tuple - ECMAScript proposal for the Record and Tuple value types. | Stage 2: it will change!
ts-pattern - 🎨 The exhaustive Pattern Matching library for TypeScript, with smart type inference.