The Combobox is inspired by GitHub's PR label selector and is powered by shadcn/ui. Almost all elements are radix-ui components, styled with tailwindcss.

It uses the following components:

• Accordion
• Badge
• Button
• Command (powered by cmdk)
• Dialog
• Input
• Label
• Popover

The only change to the core files was adding a smaller Button size:

// Button.tsx
const buttonVariants = cva(
  variants: {
    size: {
      xs: "h-8 px-2 rounded-md", // added
      // ...
    }
    // ..
  }
  // ..
)

The source code is available on GitHub.