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@ninna-ui/code-block

v0.6.0

Published

Syntax-highlighted code block React component for Ninna UI - copy-to-clipboard, line numbers, automatic dark mode, zero external dependencies. Tailwind CSS v4.

Vulnerabilities

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Links

Git

Maintainers

chnkc41chnkc41

Keywords

ninna-uireactcode-blocksyntax-highlightingcopy-to-clipboardline-numbersdark-modeaccessibledata-slottailwindcsstailwindcss-v4ui

Readme

@ninna-ui/code-block

Lightweight React syntax highlighter - copy-to-clipboard, line numbers, and automatic dark mode. Zero heavy dependencies - no Prism, no Shiki, just a fast regex tokenizer with oklch theme-aware colors.

npm License: MIT

📖 Full Documentation →  |  📦 npm →  |  🐙 GitHub →

A standalone code display component for Ninna UI - built-in syntax highlighting for TSX, JSX, TypeScript, JavaScript, CSS, HTML, JSON, Bash, and Markdown. Includes one-click copy-to-clipboard, optional line numbers, and automatic light/dark mode theming via oklch colors.

No external syntax highlighting library required. The component uses a lightweight regex-based tokenizer - no Prism, no Shiki, no WASM, no heavy dependencies. Ships under 5KB.

Installation

pnpm add @ninna-ui/code-block @ninna-ui/core

CSS Setup

@import "tailwindcss";
@import "@ninna-ui/core/theme/presets/default.css";

@variant dark (&:is(.dark *));

HTML Setup

Add the data-theme attribute to your <html> element:

<html data-theme="default">

Quick Start

import { CodeBlock } from "@ninna-ui/code-block";

function Example() {
  return (
    <CodeBlock
      code={`import { Button } from "@ninna-ui/primitives";

export function App() {
  return <Button color="primary">Click me</Button>;
}`}
      language="tsx"
      showLineNumbers
    />
  );
}

Props

| Prop | Type | Default | Description | |------|------|---------|-------------| | code | string | - | The source code to display | | language | CodeBlockLanguage | "tsx" | Syntax highlighting language | | showLineNumbers | boolean | false | Show line numbers | | showCopyButton | boolean | true | Show copy-to-clipboard button | | copyButtonAlwaysVisible | boolean | false | Keep copy button visible (vs hover-only) | | className | string | - | Additional CSS classes |

Supported Languages

type CodeBlockLanguage =
  | "tsx" | "jsx" | "typescript" | "javascript"
  | "css" | "html" | "json" | "bash"
  | "markdown" | "plaintext";

Set language="plaintext" to disable syntax highlighting entirely.

Features

  • Lightweight tokenizer - Regex-based, no Prism/Shiki dependency
  • Automatic dark mode - oklch syntax colors adapt to light/dark theme
  • Copy to clipboard - One-click copy with visual feedback
  • Line numbers - Optional, styled to not interfere with code selection
  • data-slot API - Target code-block, code-content, copy-button for CSS overrides

All Exports

import {
  CodeBlock,
  type CodeBlockProps,
  type CodeBlockLanguage,
} from "@ninna-ui/code-block";

Related Packages

License

MIT