Flatten workspace (#120)

packages/react/src/utils/cn.ts

@@ -0,0 +1,6 @@
+// A (very crude) utility to merge class names
+// Usually I'd use something like `clsx` or `classnames` but this is ok for our simple use case.
+// It just makes the billions of Tailwind classes a little easier to read.
+export function cn(...classes: (string | undefined)[]): string {
+  return classes.filter(Boolean).join(' ');
+}