proposal-pattern-matching
proposal-import-assertions
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proposal-pattern-matching | proposal-import-assertions | |
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67 | 15 | |
5,338 | 390 | |
1.3% | - | |
9.1 | 0.0 | |
6 days ago | about 1 year ago | |
HTML | HTML | |
MIT License | Apache License 2.0 |
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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.)
proposal-import-assertions
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First use of Web-pack review: Restaurant page
SO, you're using webpack to support CSS imports here, BUT, did you know that you can do this in vanilla JS without webpack using something called import assertions:
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Show HN: Deon.land – Deno.land?
This could be implemented as an import assertion[1]:
import foo from 'http://example.com/foo' assert { sha256sum: '...' }
This feature would even be useful in the web platform in general. Along with an assertion for importing plain text files (not just JSON files).
[1]: https://github.com/tc39/proposal-import-assertions
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Updates from the 94th TC39 meeting
Worth noting that Import Assertions were downgraded to stage 2 from stage 3. The proposal page may continue to say "stage 3" until it can be updated.
Import Assertions: Proposal for syntax to import ES modules with assertions
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Ideas For A Javascript Stricter Mode
Also, I'm not sure how that'd work with import assertions. That'd add another round of questions.
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How to import text files like .css or .txt on Deno?
Hi, there is a way to import json file like:
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You can import non-JS files into JavaScript without bundlers & loaders
If you want the real thing, you're looking for import assertions.
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NPM changes image path??..
But it's still only a proposal, currently at stage 3 (which means it's almost finalised, pending any critical feedback or refinements, before it gets implemented). You can view the import assertions proposal on GitHub.
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Import Assertion support on Safari?
I wouldn't use import assertions in any browser since they are still a stage 3 proposal so any browser which implements them is doing before it is standardized and shouldn't be relied upon for anything that matters.
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Deno Joins TC39
There's an issue for that to be added as aprt of import assertions https://github.com/tc39/proposal-import-assertions/issues/11...
What are some alternatives?
fp-ts - Functional programming in TypeScript
proposal-source-phase-imports - Proposal to enable importing modules at the source phase
package.elm-lang.org - website for browsing packages and exploring documentation
WHATWG HTML Standard - HTML Standard
content - The content behind MDN Web Docs
proposal-symbols-as-weakmap-keys - Permit Symbols as keys in WeakMaps, entries in WeakSets and WeakRefs, and registered in FinalizationRegistries
ecma262 - Status, process, and documents for ECMA-262
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!
proposal-async-context - Async Context for JavaScript
proposal-arraybuffer-transfer - Proposal to add ArrayBuffer.prototype.transfer