Web Component Base

Note

Correctness fixes shipped (v5.0.0) — We now have better compliance with the custom elements specs, better property type handling and clearer distinction between attributes and property within onChanges() hook (breaking change). See the change log for more details. Next up: faster templates!

🤷‍♂️ zero-dependency, 🤏 tiny JS base class for creating reactive custom elements easily ✨

This is the base class used for web components in Ayo's projects, primarily cozy-games, mcfly, his personal site, his blog, and others.

Read more about it on the docs or view a demo on CodePen.

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.

Want to get in touch?

There are many ways to get in touch:

1. Open a GitHub issue or discussion
2. Submit a ticket via SourceHut todo
3. Email me: hi@ayo.run

Inspirations and thanks

1. htm - I use it for the html function 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.
2. fast - When I found that Microsoft has their own base class I thought it was super cool!
3. lit - lit-html continues to amaze me and I worked to make wcb generic 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.

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Just keep building.
A project by Ayo