HackerReposA FIELD GUIDE TO OPEN SOURCE
ProSponsor the shelf♧ 0
← Back to top all-time
github
catalyst
TypeScript2021–2024
github / catalyst

catalyst

Catalyst is a set of patterns and techniques for developing components within a complex application.

2Distinct people
6Mentions
1Explicit recommenders
1.4KGitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Catalyst is a set of patterns and techniques for developing components within a complex application.

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

Reminds me of GitHub catalyst web component framework (and I think related to stimulusjs?), which has targets & actions. https://github.com/github/catalyst <button…

jauntywundrkind used a recommendation phrase. One indexed comment matches. This is a phrase match, not a verdict.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 11:56:56 AM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year6 dated mentions

Observed mentions: 2021-03-12 18:37:06 UTC to 2024-07-12 22:07:11 UTC.

01232021-01-01 00:00:00 UTC to 2022-01-01 00:00:00 UTC (exclusive): 3 mentions; 0 submissions, 3 comments20212022-01-01 00:00:00 UTC to 2023-01-01 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments20222023-01-01 00:00:00 UTC to 2024-01-01 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 comments2024-01-01 00:00:00 UTC to 2025-01-01 00:00:00 UTC (exclusive): 2 mentions; 0 submissions, 2 comments2024

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
20212021-01-01 00:00:00 UTC2022-01-01 00:00:00 UTC303
20222022-01-01 00:00:00 UTC2023-01-01 00:00:00 UTC000
20232023-01-01 00:00:00 UTC2024-01-01 00:00:00 UTC101
20242024-01-01 00:00:00 UTC2025-01-01 00:00:00 UTC202

What Hacker News says

6 sources
> but architecturally they're inadequate for solving the problems modern frameworks and libraries address Such as? Do you think these are inherent limitation? Is it possible to get to an "adequate" place with webcomponents alone? Or with web component based frameworks or libraries? > that's why you see them used nearly nowhere Little companies you have have heard of using webcomponents extensively: YouTube, many Google properties, GitHub. Personally I'm hella sad that this industry doesn't make new js frameworks like they used to. It now takes a Microsoft or a Facebook's name recognition for people to pay attention. And where-as before many people tried, devs in the React age see themselves not as capable web makers, but as downstream React craftsmen; we don't recognize in ourselves that we create & shape our development experience, are l
Read the rest
ess trying to find what works for us & more trying to adopt & use existing tools. I feel similar but different in this summation: > the main thing we really need is time. There is clearly a best practices converging across the tooling landscape, best ways to solve common problems We lack the range of experience. Time yes, but more so, there aren't visible enough pokers in the fire. And a lack of a strong blogging culture where every effort gets chatted up & considered by the broader mind. We don't really know what limitations or downsides there are; most folks haven't tried or seen many other tries. (Shout out to niw-inactive Catalyst web component library, which I hope some day comes back. The action / target system rocks, very similar to CommamdFor/InvikerAction work that's been chunking along. https://github.com/github/catalyst https://github.com/whatwg/html/issues/9625#issuecomment-2115... )
In Is Mesop and Web Components the cure to Front-end fatigue?
With apologies, a lot of these feel like a grab bag of elements. But Keith Cirkel's Invoker/Actions feels like a big paradigm idea, something that de-javascriptizes & encodes in html the primary intents of the web. There's something super enticing here, a slim/trim layer of paradigm, which honestly we have seen little of expressed in the web itself (whereas libraries have spiraled towards their own meaning). (Maybe css scopes being a good counter example forwards.) https://open-ui.org/components/invokers.explainer (There's also Keith's Interest Invokers, https://open-ui.org/components/interest-invokers.explainer/) Keith is Github's Catalyst framework's primary author. Very Stencil.js inspired, and a clear predecessor of the ideas here; actions and targets. A similar casting of intent out of js and into the DOM. Declare the world! https://
Read the rest
github.com/github/catalyst Catalyst really had me for a bit, and supposedly had pretty heavy rotation within GitHub as the tool that minted the components we saw. Visible progress has really slowed though, as there haven't seen signs of life towards the expected 2.0. I hope we see a return. Keith's practical frameworking was a great guide that pointed toward these abstract understandings, and I feel like the case for this open-uo proposal would be much stronger if Catalyst could be the lives experience here. If anything could be the lives experience.
In Open UI
Personally, I'd really like to see the unmolested, with-dependencies versions[1]. This version is VERY easy to ship and adopt. But in my mind, these components hide how the sausage is made! Many were built with a library (Catalyst[2]), but the tools were obfuscated out in these end products. There's a huge amount to be said for these web components. We need more models like this. But I also think there's an opportunity lost here, to teach, to inform, to help others learn how to build components, using the tech Github actually used to develop them. [1] https://news.ycombinator.com/item?id=26439167 [2] https://github.com/github/catalyst
In GitHub's Web Component Collection

MAKE YOURSELF AT HOME

A few shortcuts

/
Search the collection
?
Open this guide
Esc
Close dialogs and navigation

Your saved repositories and interests stay in this browser.