Bun Development

This is a comprehensive reference for building with Bun, the fast JavaScript runtime that's gaining traction as a Node.js alternative. It covers everything from installation and package management to Bun's native APIs for file handling, HTTP servers, WebSockets, and SQLite. You'll want this when migrating existing Node projects to Bun or starting fresh with its built-in bundler and test runner. The skill includes real code examples for common patterns like password hashing and environment variables, plus migration guidance since Bun isn't 100% Node-compatible. The speed improvements are real (10-100x faster installs, native TypeScript support), but you'll need to verify your dependencies work with Bun's runtime before fully committing.

skills.sh installs: 369
GitHub stars: 33.2K
last updated: Aug 21, 2026

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Install

$ npx -y skills add davila7/claude-code-templates --skill bun-development --agent claude-code

Installs into .claude/skills of the current project.

Files

⚡ Bun Development

Fast, modern JavaScript/TypeScript development with the Bun runtime, inspired by oven-sh/bun.

When to Use This Skill

Use this skill when:

Starting new JS/TS projects with Bun
Migrating from Node.js to Bun
Optimizing development speed
Using Bun's built-in tools (bundler, test runner)
Troubleshooting Bun-specific issues

1. Getting Started

1.1 Installation

# macOS / Linux
curl -fsSL https://bun.sh/install | bash

# Windows
powershell -c "irm bun.sh/install.ps1 | iex"

# Homebrew
brew tap oven-sh/bun
brew install bun

# npm (if needed)
npm install -g bun

# Upgrade
bun upgrade