Code

npm install react-aria-components

"use client";

import { useState, type ComponentProps } from "react";
import { Button } from "react-aria-components";

/** A word or two of code inside a sentence. */
export function Code({ className, ...props }: ComponentProps<"code">) {
  return (
    <code
      {...props}
      className={["rounded-[calc(var(--tui-code-radius)_*_0.5)] bg-(--tui-code-bg) px-[0.35em] py-[0.1em] font-(family-name:--tui-code-font) text-[0.9em] text-(--tui-code-fg)", className].filter(Boolean).join(" ")}
    />
  );
}

export interface CodeBlockProps extends Omit<ComponentProps<"div">, "children" | "title"> {
  /** What the code is: a file name, a language. */
  title?: string;
  /** The code, as text. */
  children: string;
}

/** A block of code with a name and a button that copies it. */
export function CodeBlock({ title, children, className, ...props }: CodeBlockProps) {
  const [copied, setCopied] = useState(false);
  const copy = async () => {
    await navigator.clipboard.writeText(children);
    setCopied(true);
    setTimeout(() => setCopied(false), 1500);
  };

  return (
    <div
      data-slot="code"
      {...props}
      className={["overflow-hidden rounded-(--tui-code-radius) border-solid border-(length:--tui-code-border-width) border-(--tui-code-border) bg-(--tui-code-bg) font-(family-name:--tui-code-font) text-(length:--tui-code-font-size) text-(--tui-code-fg)", className].filter(Boolean).join(" ")}
    >
      <div className="flex items-center justify-between gap-3 border-solid border-(--tui-code-border) border-b-(length:--tui-code-border-width) px-(--tui-code-padding) py-[calc(var(--tui-code-padding)_*_0.5)]">
        <span className="truncate text-(--tui-code-muted)">{title}</span>
        <Button
          onPress={copy}
          className="cursor-default rounded-[calc(var(--tui-code-radius)_*_0.5)] px-1.5 py-0.5 font-(family-name:--tui-font) text-(--tui-code-muted) outline-none data-focus-visible:[outline:2px_solid_var(--tui-ring)] data-hovered:text-(--tui-code-fg)"
        >
          {copied ? "Copied" : "Copy"}
        </Button>
      </div>
      <pre className="m-0 overflow-x-auto p-(--tui-code-padding) leading-relaxed">
        <code>{children}</code>
      </pre>
    </div>
  );
}

:root {
  color-scheme: light;
  --tui-bg: #ffffff;
  --tui-fg: #0a0a0a;
  --tui-muted: #f5f5f5;
  --tui-muted-fg: #737373;
  --tui-border: #e5e5e5;
  --tui-primary: #171717;
  --tui-primary-fg: #fafafa;
  --tui-ring: #a3a3a3;
  --tui-success: #16a34a;
  --tui-warning: #d97706;
  --tui-danger: #dc2626;
  --tui-radius: 8px;
  --tui-border-width: 1px;
  --tui-space: 4px;
  --tui-shadow: none;
  --tui-font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
  --tui-text: 14px;
  --tui-duration: 150ms;

  /* Code */
  --tui-code-padding: calc(var(--tui-space) * 4);
  --tui-code-radius: var(--tui-radius);
  --tui-code-border-width: var(--tui-border-width);
  --tui-code-font-size: 13px;
  --tui-code-font: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --tui-code-bg: var(--tui-muted);
  --tui-code-fg: var(--tui-fg);
  --tui-code-muted: var(--tui-muted-fg);
  --tui-code-border: var(--tui-border);
}

.dark,
[data-theme="dark"] {
  color-scheme: dark;
  --tui-bg: #0a0a0a;
  --tui-fg: #fafafa;
  --tui-muted: #1c1c1c;
  --tui-muted-fg: #a3a3a3;
  --tui-border: #2a2a2a;
  --tui-primary: #fafafa;
  --tui-primary-fg: #171717;
  --tui-ring: #737373;
  --tui-success: #22c55e;
  --tui-warning: #f59e0b;
  --tui-danger: #ef4444;
}