Zero

A toolkit for building web components in ClojureScript.

Highlights

• Depends only on ClojureScript core
• Small, with optional 'extras' modules for more features
• Hot reload friendly
• Focus preserving updates
• 'Good enough' performance

Rationale

• Web components have many advantages over React and similar frameworks, including:
  • Easy to render server-side
  • Seamless interop with other frameworks and libraries
  • Encapsulation, no style bleed, often better performance
  • Native DevTools support
• Web components are cool, but the native API for building them isn't very convenient
  • Zero makes web components easy

Warning

Depends on modern browser APIs, works on the latest versions of all major browsers... but will break in some not-so-old versions. In particular, it depends on:

• CSSStyleSheet constructor
• ElementInternals

Learning

Zero is in a highly experimental stage of development, as such, it's difficult to keep any sort of extensive documentation up to date. So I've built a few demos, and will try to keep those up to date with the latest Zero version.

• TodoMVC
• SSR Demo (w. live updates)

In addition, I'll do my best to keep the following up to date:

• Configuration - Full walkthrough of zero.config, which is used to configure all aspect of Zero, including registering components.
• Markup - Detailed description of the markup notation used by Zero, which is akin to Hiccup, but not identical.
• Extras - Goes through Zero's 'extra' modules, including derived streams and the built-in database implementation.

Contact

• zero@raystubbs.me
• Clojurians: @Ray Stubbs