This is the branch tracking v7 work. If you are looking for the published latest on npm check out v6 branch.
Overview
This is the branch tracking v7 work. If you are looking for the published latest on npm check out v6 branch.
README
Web Component Base
[!Note] This is the branch tracking v7 work. If you are looking for the published
lateston npm check out v6 branch. The next major version brings an even tinier default with opt-in reactivity, faster templates wit caching, and more.

🤷♂️ zero-dependency, 🤏 tiny JS base class for creating reactive custom elements easily ✨
When you extend the WebComponent class for your component, you only have to define the template and properties. Any change in any property value will automatically cause just the component UI to render.
The result is a reactive UI on property changes.
Quick start
The fastest way to try wcb is to scaffold a new component:
npm create wcb@latest
Next actions:
- Read the docs
- View demos with code examples
- Play with a demo on CodePen.
- Try it on TypeScript playground
Want to get in touch?
There are many ways to get in touch:
- Open a GitHub issue or discussion
- Submit a ticket on SourceHut todo or via Email
Inspirations and thanks
- Sara Rainsberger - I never stop singing praises to the Astro documentation team and I use Sarah’s “50 docs tips in 50 days” as a guide in reviewing the documentation for wcb. I do not have a team myself, and do not have the level of excellence Sarah brings to reviewing docs. I often need the assistance and have encodified a docs-review skill for it with permission.
- htm - I use it for the
htmlfunction for tagged templates, and take a lot of inspiration in building the rendering implementation. It is highly likely that I will go for what Preact is doing… but we’ll see. - fast - When I found that Microsoft has their own base class I thought it was super cool!
- lit -
lit-htmlcontinues to amaze me and I worked to makewcbgeneric so I (and others) can continue to use it
Size change log
See size-change-log.md for a running record of how each correctness/feature change affects the WebComponent base class bundle size, with the reason and benefit of each.
Background
This is the base class used for web components in Ayo’s projects, primarily cozy-games, mcfly, his personal site, his blog, and others.
Just keep building. A project by Ayo
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Install
npx skillfish add ayo-run/wcb