Bun Init

bun --version

bun init -y

{
  "compilerOptions": {
    "target": "ES2022",
    "module": "ESNext",
    "moduleResolution": "bundler",
    "types": ["bun-types"],
    "strict": true,
    "esModuleInterop": true,
    "skipLibCheck": true,
    "resolveJsonModule": true,
    "allowImportingTsExtensions": true,
    "noEmit": true
  }
}

{
  "compilerOptions": {
    "target": "ES2022",
    "lib": ["ES2022", "DOM", "DOM.Iterable"],
    "module": "ESNext",
    "moduleResolution": "bundler",
    "jsx": "react-jsx",
    "types": ["bun-types"],
    "strict": true,
    "esModuleInterop": true,
    "skipLibCheck": true,
    "resolveJsonModule": true,
    "allowImportingTsExtensions": true,
    "noEmit": true
  }
}

{
  "compilerOptions": {
    "target": "ES2022",
    "module": "ESNext",
    "moduleResolution": "bundler",
    "types": ["bun-types"],
    "strict": true,
    "esModuleInterop": true,
    "skipLibCheck": true,
    "resolveJsonModule": true,
    "allowImportingTsExtensions": true,
    "noEmit": true,
    "paths": {
      "@/*": ["./src/*"]
    }
  }
}

{
  "compilerOptions": {
    "target": "ES2022",
    "module": "ESNext",
    "moduleResolution": "bundler",
    "types": ["bun-types"],
    "strict": true,
    "declaration": true,
    "declarationMap": true,
    "esModuleInterop": true,
    "skipLibCheck": true,
    "resolveJsonModule": true,
    "allowImportingTsExtensions": true,
    "noEmit": true
  }
}

project/
├── src/
│   ├── index.ts          # Main CLI entry point
│   ├── commands/         # Command handlers
│   └── utils/            # Shared utilities
├── tests/
│   └── index.test.ts
├── package.json
├── tsconfig.json
├── .gitignore
├── .env.example
└── README.md

#!/usr/bin/env bun

console.log("Hello from Bun CLI!");

// Example: Parse command line arguments
const args = process.argv.slice(2);
console.log("Arguments:", args);

{
  "bin": {
    "your-cli-name": "./src/index.ts"
  }
}

project/
├── src/
│   ├── index.tsx         # App entry point
│   ├── components/       # React components
│   ├── styles/           # CSS/styles
│   └── utils/            # Utilities
├── public/
│   └── index.html
├── tests/
├── package.json
├── tsconfig.json
├── .gitignore
├── .env.example
└── README.md

project/
├── src/
│   ├── index.ts          # Server entry point
│   ├── routes/           # Route handlers
│   ├── middleware/       # Express/Hono middleware
│   ├── services/         # Business logic
│   └── types/            # TypeScript types
├── tests/
├── package.json
├── tsconfig.json
├── .gitignore
├── .env.example
└── README.md

const server = Bun.serve({
  port: 3000,
  fetch(request) {
    return new Response("Welcome to Bun!");
  },
});

console.log(`Server running at http://localhost:${server.port}`);

project/
├── src/
│   ├── index.ts          # Main export
│   └── types.ts          # Type definitions
├── tests/
├── package.json
├── tsconfig.json
├── .gitignore
└── README.md

# Bun
node_modules
bun.lockb
*.bun

# Environment
.env
.env.local
.env.*.local

# Build outputs
dist/
build/
*.tsbuildinfo

# Logs
logs
*.log
npm-debug.log*

# OS
.DS_Store
Thumbs.db

# IDE
.vscode/
.idea/
*.swp
*.swo
*~

# Test coverage
coverage/
.nyc_output/

# Application
NODE_ENV=development
PORT=3000

# Add your environment variables here
# DATABASE_URL=
# API_KEY=

{
  "scripts": {
    "dev": "bun run src/index.ts",
    "test": "bun test",
    "lint": "bun run --bun eslint src",
    "typecheck": "bun run --bun tsc --noEmit"
  }
}

{
  "scripts": {
    "dev": "bun run --hot src/index.tsx",
    "build": "bun build src/index.tsx --outdir=dist --minify",
    "test": "bun test",
    "typecheck": "bun run --bun tsc --noEmit"
  }
}

{
  "scripts": {
    "dev": "bun run --hot src/index.ts",
    "start": "bun run src/index.ts",
    "test": "bun test",
    "typecheck": "bun run --bun tsc --noEmit"
  }
}

{
  "scripts": {
    "build": "bun build src/index.ts --outdir=dist --minify --sourcemap=external",
    "test": "bun test",
    "typecheck": "bun run --bun tsc --noEmit",
    "prepublishOnly": "bun run build && bun test"
  }
}

bun add commander chalk ora
bun add -d @types/node

bun add react react-dom
bun add -d @types/react @types/react-dom

bun add hono
bun add -d @types/node

# No default dependencies - user will add as needed

import { describe, expect, test } from "bun:test";

describe("Initial test", () => {
  test("basic assertion", () => {
    expect(1 + 1).toBe(2);
  });
});