A pattern-driven toolkit that enhances standard HTML elements. Built using a constraint-driven approach inspired by Jason Miller, the library focuses on user experience and aggressive minimalism.

1. Prototype to discover possibilities, then tighten constraints
2. Technical excellence before DX conveniences
3. Treat annoyance in code as a signal for improvement
4. High signal-to-noise APIs so developers write much less code
5. Handle the simple case first, then provide fallbacks for complexity

Most components are generated via a small factory that forwards props directly to the DOM. This keeps runtime cost near zero: Example definition:

export const Button = createSimpleComponent('button', 'button');

More complex elements (for example Dialog) wrap native platform APIs and add minimal behaviour while still forwarding attributes directly:

export function Dialog({defaultOpen, children}: DialogProps) {
  const dialogRef = useRef<HTMLDialogElement>(null);
  useEffect(() => {
    if (defaultOpen) dialogRef.current?.showModal();
  }, [defaultOpen]);
  return <DialogCtx.Provider value={dialogRef}>{children}</DialogCtx.Provider>;
}

Styling is handled with attribute selectors. Component props are forwarded to attributes so CSS controls variants and states:

[p="button"] {
  background-color: hsl(var(--p-primary));
  color: hsl(var(--p-primary-foreground));
}

[p="button"][variant="outline"] {
  background-color: hsl(var(--p-background));
  border: 1px solid hsl(var(--p-border));
}

Design tokens live in src/variables.css with both light and dark definitions.

All simple components are located in src/components/ and import their own style.css.

We never use JavaScript to express basic logic when the same outcome can be achieved in CSS. For example, rather than destructuring props to add a fallback value of "default" for "variant", we simply include the empty case in our CSS selector:

[p="button"][variant="default"],
[p="button"]:not([variant]) {
  background-color: hsl(var(--p-background));
  border: 1px solid hsl(var(--p-border));
}

Alternatively, for a enum/boolean prop that has a default value like the above, it's often the case that the set of CSS properties applied dependent on the prop value are always the same. When this is true, you can omit the entire [p="button"][variant="default"], [p="button"]:not([variant]) selector entirely and simply apply the default CSS properties in the element's base selector ([p="button"]).

src/
  lib/
  components/
  variables.css
  base.css
  index.ts

demo/
  src/
  vite.config.ts

Run pnpm install and pnpm run build in demo/ to build the demo app.