A flexible, type-safe dice rolling implementation for tabletop RPGs, game development, and probability simulations that supports:

• 🎲 Standard dice notation (4d6, 2d20H, etc.)
• 🎯 Complex modifiers (drop lowest, reroll, exploding dice)
• 🔒 Full TypeScript support with intelligent type inference
• 🎮 Perfect for games, RPGs, and simulations
• 🪶 Tree-shakeable implementation for minimal bundle size
• 📦 Optimized for performance and reliability
• 🧩 Extensible architecture for custom game systems
• 🌐 Works in Node.js, browsers, and React Native

Installation

npm install @randsum/roller
# or
yarn add @randsum/roller
# or
bun add @randsum/roller

CLI Usage

Roll dice directly from your terminal:

npx randsum 2d20    # Roll two twenty-sided dice
npx randsum 4d6L    # Roll 4d6, drop lowest
npx randsum 3d8+2   # Roll three d8s and add 2

Example output:

🎲 Roll Result:
───────────────
Total: 24
Rolls: [14, 10]
Description: Roll 2d20