TheGP Design System — @thegpvc/ui

Shared UI components for TheGP internal applications.

View Playground →

Quick Start

1. Install the package

npm install @thegpvc/ui

2. Configure your CSS

Add these lines to your app's main CSS file (e.g., src/index.css):

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=JetBrains+Mono:wght@400;500&display=swap');
@import "tailwindcss";
@import "@thegpvc/ui/theme";
@source "../node_modules/@thegpvc/ui/dist";

Why each line matters:

• @import "tailwindcss" — Base Tailwind utilities (your app provides this)
• @import "@thegpvc/ui/theme" — GP design tokens (colors, fonts, component classes)
• @source "..." — Tells Tailwind to scan our components so utility classes aren't purged

3. Use components

import { Button, Badge, Card } from '@thegpvc/ui'

function App() {
  return (
    <Card>
      <Card.Header>Welcome</Card.Header>
      <Card.Body>
        <Button variant="primary">Get Started</Button>
      </Card.Body>
    </Card>
  )
}

Vite Setup

Ensure your vite.config.ts includes the TailwindCSS plugin:

import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react'
import tailwindcss from '@tailwindcss/vite'

export default defineConfig({
  plugins: [react(), tailwindcss()],
})

Components

• Button - Primary action buttons with variants (primary, secondary, ghost, destructive)
  • Sizes: sm, md, lg
  • Features: loading state, icon support
• Badge - Status indicators with variants (success, warning, error, info, neutral)
• Card - Content containers with compound pattern (Card.Header, Card.Body, Card.Footer)
• StatCard - Metric displays with trend indicators (up/down)
• Alert - Contextual messages with variants (info, warning, error, success)
  • Features: dismissible, title support
• Skeleton - Loading states and skeleton screens
  • Includes: Skeleton, SkeletonText, SkeletonStatCard, SkeletonListItem

Icons

Common icons are re-exported from lucide-react for convenience:

import { Search, User, Mail, Calendar, Loader2, TrendingUp } from '@thegpvc/ui'

Note: Your app must have lucide-react installed as a peer dependency.

Utilities

cn() - ClassName Utility

Merge Tailwind classes with proper precedence:

import { cn } from '@thegpvc/ui'

<Button className={cn('extra-class', isActive && 'active-class')} />

Development

Developing gp-ui Itself

To work on the design system components:

# Install dependencies
npm install

# Build the library
npm run build

# Watch mode for development (rebuilds on file changes)
npm run dev

Running the Playground

The playground provides an interactive environment to view and test all components:

npm run playground

This starts a local dev server at http://localhost:5174 with hot reloading. To build the playground for deployment:

npm run build:playground

Using gp-ui in Your Project

For production use, install via your package manager (see Installation above). For local development with a linked version:

Using npm link

In the gp-ui directory:

npm link

In your project directory:

npm link @thegpvc/ui

To unlink:

# In your project
npm unlink @thegpvc/ui

# In gp-ui (optional cleanup)
npm unlink

Making Changes While Developing Another Project

Recommended workflow:

1. Terminal 1 (gp-ui): Run npm run dev to watch for changes
2. Terminal 2 (your project): Use npm link @thegpvc/ui dependency
3. Make changes to components in gp-ui
4. Watch mode automatically rebuilds
5. Your project's dev server (Vite HMR) picks up the changes

Peer Dependencies

This package requires the following peer dependencies to be installed in your app:

{
  "react": ">=18.0.0",
  "react-dom": ">=18.0.0",
  "lucide-react": ">=0.400.0"
}

Design Guidelines

See DESIGN_GUIDE.md for:

• Color usage guidelines
• Typography scale
• Spacing system
• Component design patterns

Claude Code Integration

This library includes a Claude Code plugin that provides AI assistance when building UIs with @thegpvc/ui components.

Enable the Plugin

In Claude Code, run:

/plugin add github:thegpvc/gp-ui

What It Provides

The plugin gives Claude knowledge of:

• All available components and their props
• Design system colors, typography, and spacing
• Icon exports and naming conventions
• Setup and migration guidance

When building UIs, Claude will automatically use the correct components, variants, and patterns from @thegpvc/ui.