コンポーネント「ライブラリ」ではなく「コレクション」？shadcn/uiに入門してみた

❯ bunx --bun shadcn@latest init

✔ Which style would you like to use? › New York
✔ Which color would you like to use as the base color? › Neutral
✔ Would you like to use CSS variables for theming? … no / yes

npm i <package> --force

npm i <package> --legacy-peer-deps

bunx --bun shadcn@latest add button

import { Button } from "@/components/ui/button";

export default function Home() {
  return (
    <div>
      <Button>Click me</Button>
    </div>
  );
}

・・・

const buttonVariants = cva(
  "inline-flex items-center justify-center gap-2 whitespace-nowrap rounded-md text-sm font-medium transition-colors focus-visible:outline-none focus-visible:ring-1 focus-visible:ring-ring disabled:pointer-events-none disabled:opacity-50 [&_svg]:pointer-events-none [&_svg]:size-4 [&_svg]:shrink-0",
  {
    variants: {
      variant: {
        default:
          "bg-primary text-primary-foreground shadow hover:bg-primary/90",
        destructive:
          "bg-destructive text-destructive-foreground shadow-sm hover:bg-destructive/90",
        outline:
          "border border-input bg-background shadow-sm hover:bg-accent hover:text-accent-foreground",
        secondary:
          "bg-secondary text-secondary-foreground shadow-sm hover:bg-secondary/80",
        ghost: "hover:bg-accent hover:text-accent-foreground",
        link: "text-primary underline-offset-4 hover:underline",
      },
      size: {
        default: "h-9 px-4 py-2",
        sm: "h-8 rounded-md px-3 text-xs",
        lg: "h-10 rounded-md px-8",
        icon: "h-9 w-9",
      },
    },
    defaultVariants: {
      variant: "default",
      size: "default",
    },
  }
)

・・・

      <Button variant="outline" size="lg">
        Click me
      </Button>

      variant: {
        default:
          "bg-primary text-primary-foreground shadow hover:bg-primary/90",
        destructive:
          "bg-destructive text-destructive-foreground shadow-sm hover:bg-destructive/90",
        outline:
          "border border-input bg-background shadow-sm hover:bg-accent hover:text-accent-foreground",
        secondary:
          "bg-secondary text-secondary-foreground shadow-sm hover:bg-secondary/80",
        ghost: "hover:bg-accent hover:text-accent-foreground",
        link: "text-primary underline-offset-4 hover:underline",
        red: "bg-red-500 text-white shadow-sm hover:bg-red-600", #追加
      },

import { Button } from "@/components/ui/button";

export default function Home() {
  return (
    <div className="flex flex-col items-end  justify-center h-screen space-y-4">
      <Button>ボタンそのまま</Button>

      <Button>
        <a href="<https://google.com>">そのままaタグを渡す</a>
      </Button>

      <Button asChild>
        <a href="<https://google.com>">asChildでaタグを渡す</a>
      </Button>
    </div>
  );
}