Show HN: Ts-Chan – Go-Like Concurrency Primitives for TypeScript/JavaScript

• ts-chan

  6 109 8.1 TypeScript

  Concurrency primitives for TypeScript and JavaScript.

Generators have lots of really nice uses, yep.

I'm not sure what specifically you were imagining, but I've added an example of how "vanilla JS" can achieve fan-in, using an AsyncGenerator: https://github.com/joeycumines/ts-chan/blob/main/docs/patter...

It uses one of the patterns suggested in a comment chain above, which I think is pretty neat, and wasn't one that readily occurred to me: https://news.ycombinator.com/item?id=38163562

I'm not making a case for using ts-chan for any situation where a simple generator-based solution suffices. I wouldn't call the example solution (in my first link) simple, but it's something I'd personally be ok with maintaining. Like, I'd approve a PR containing something similar without significant qualms, _if_ there was a significant enough motivator, and it was sufficiently unit tested. I might suggest that as an alternative, to make it easier to maintain, but wouldn't be particularly concerned either way.

That's all very subjective, though :)

• channel

  1 66 0.0 JavaScript

  Discontinued Go-like channels for JavaScript (by NodeGuy)

I think I prefer its more concise API, e.g. [for select](https://github.com/NodeGuy/channel/blob/main/API.md#examples). ts-chan's API looks a bit too verbose to my taste.

Here's an example from ts-chan:

```

• SurveyJS

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  Open-Source JSON Form Builder to Create Dynamic Forms Right in Your App. With SurveyJS form UI libraries, you can build and style forms in a fully-integrated drag & drop form builder, render them in your JS app, and store form submission data in any backend, inc. PHP, ASP.NET Core, and Node.js.

  

• contextlib

  1 16 3.2 TypeScript

  JS implementation of python's context managers. With 💙 { ... }

If you want it to run on exiting the function in reverse order, something like Python's context managers would probably be necessary.

I've dabbled in that too, though I don't actually use it for anything, currently: https://github.com/Mcsavvy/contextlib/pull/1

• generator-ticker

  1 0 6.3 TypeScript

  An ES6 generator similar to setInterval that adjusts for slow receivers.

Actually, it was fun, so I've made it into an actual package.

The one I slapped together works, but this one is better (fixes issues with actually stopping it properly): https://github.com/joeycumines/generator-ticker

On NPM as generator-ticker.

Suggest a related project