Bun Development
Bun Development is an code AI skill with a core value of Modern JavaScript/TypeScript development with Bun runtime. It
helps developers solve real-world problems in the code domain, boosting
efficiency, automating repetitive tasks, and optimizing workflows.
Modern JavaScript/TypeScript development with Bun runtime. Covers package management, bundling, testing, and migration from Node.js. Use when working with Bun, optimizing JS/TS development speed, o...
Quick Facts
mkdir -p ./skills/bun-development && curl -sfL https://raw.githubusercontent.com/sickn33/antigravity-awesome-skills/main/skills/bun-development/SKILL.md -o ./skills/bun-development/SKILL.mdRun in terminal / PowerShell. Requires curl (Unix) or PowerShell 5+ (Windows).
Skill Content
# ⚡ Bun Development
> Fast, modern JavaScript/TypeScript development with the Bun runtime, inspired by [oven-sh/bun](https://github.com/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 upgrade1.2 Why Bun?
| Feature | Bun | Node.js |
| :-------------- | :------------- | :-------------------------- |
| Startup time | ~25ms | ~100ms+ |
| Package install | 10-100x faster | Baseline |
| TypeScript | Native | Requires transpiler |
| JSX | Native | Requires transpiler |
| Test runner | Built-in | External (Jest, Vitest) |
| Bundler | Built-in | External (Webpack, esbuild) |
---
2. Project Setup
2.1 Create New Project
# Initialize project
bun init
# Creates:
# ├── package.json
# ├── tsconfig.json
# ├── index.ts
# └── README.md
# With specific template
bun create <template> <project-name>
# Examples
bun create react my-app # React app
bun create next my-app # Next.js app
bun create vite my-app # Vite app
bun create elysia my-api # Elysia API2.2 package.json
{
"name": "my-bun-project",
"version": "1.0.0",
"module": "index.ts",
"type": "module",
"scripts": {
"dev": "bun run --watch index.ts",
"start": "bun run index.ts",
"test": "bun test",
"build": "bun build ./index.ts --outdir ./dist",
"lint": "bunx eslint ."
},
"devDependencies": {
"@types/bun": "latest"
},
"peerDependencies": {
"typescript": "^5.0.0"
}
}2.3 tsconfig.json (Bun-optimized)
{
"compilerOptions": {
"lib": ["ESNext"],
"module": "esnext",
"target": "esnext",
"moduleResolution": "bundler",
"moduleDetection": "force",
"allowImportingTsExtensions": true,
"noEmit": true,
"composite": true,
"strict": true,
"downlevelIteration": true,
"skipLibCheck": true,
"jsx": "react-jsx",
"allowSyntheticDefaultImports": true,
"forceConsistentCasingInFileNames": true,
"allowJs": true,
"types": ["bun-types"]
}
}---
3. Package Management
3.1 Installing Packages
# Install from package.json
bun install # or 'bun i'
# Add dependencies
bun add express # Regular dependency
bun add -d typescript # Dev dependency
bun add -D @types/node # Dev dependency (alias)
bun add --optional pkg # Optional dependency
# From specific registry
bun add lodash --registry https://registry.npmmirror.com
# Install specific version
bun add react@18.2.0
bun add react@latest
bun add react@next
# From git
bun add github:user/repo
bun add git+https://github.com/user/repo.git3.2 Removing & Updating
# Remove package
bun remove lodash
# Update packages
bun update # Update all
bun update lodash # Update specific
bun update --latest # Update to latest (ignore ranges)
# Check outdated
bun outdated3.3 bunx (npx equivalent)
# Execute package binaries
bunx prettier --write .
bunx tsc --init
bunx create-react-app my-app
# With specific version
bunx -p typescript@4.9 tsc --version
# Run without installing
bunx cowsay "Hello from Bun!"3.4 Lockfile
# bun.lockb is a binary lockfile (faster parsing)
# To generate text lockfile for debugging:
bun install --yarn # Creates yarn.lock
# Trust existing lockfile
bun install --frozen-lockfile---
4.
🎯 Best For
- QA engineers
- Developers writing unit tests
- Claude users
- Software engineers
- Development teams
💡 Use Cases
- Generating test cases for edge conditions
- Writing integration test suites
- TypeScript type safety checking
- Module refactoring
📖 How to Use This Skill
- 1
Install the Skill
Copy the install command from the Terminal tab and run it. The SKILL.md file downloads to your local skills directory.
- 2
Load into Your AI Assistant
Open Claude and reference the skill. Paste the SKILL.md content or use the system prompt tab.
- 3
Apply Bun Development to Your Work
Open your project in the AI assistant and ask it to apply the skill. Start with a small module to verify the output quality.
- 4
Review and Refine
Review AI suggestions before committing. Run tests, check for regressions, and iterate on the skill output.
❓ Frequently Asked Questions
Does this generate test mocks?
Many testing skills include mock generation. Check the install command and skill content for details.
Is Bun Development compatible with Cursor and VS Code?
Yes — this skill works with any AI coding assistant including Cursor, VS Code with Copilot, and JetBrains IDEs.
Do I need specific dependencies for Bun Development?
Check the install command and Works With section. Most code skills only require the AI assistant and your codebase.
How do I install Bun Development?
Copy the install command from the Terminal tab and run it. The skill downloads to ./skills/bun-development/SKILL.md, ready to use.
Can I customize this skill for my team?
Absolutely. Edit the SKILL.md file to add team-specific instructions, examples, or workflows.
⚠️ Common Mistakes to Avoid
Not testing edge cases
AI tends to generate happy-path tests. Manually review for boundary conditions.
Skipping validation
Always test AI-generated code changes, even for simple refactors.
Missing dependency updates
Check if the skill requires updated dependencies or new packages.