Bun

Run Commands

Run JavaScript and TypeScript files with Bun's fast runtime. Execute package.json scripts and shell commands.

8 commands

Pro Tips

Use 'bun run' without arguments to see available scripts from package.json.

Bun auto-loads .env files - no dotenv package needed.

Use '--hot' for hot module reloading during development.

Common Mistakes

Some Node.js APIs may not be fully compatible - check Bun's compatibility table.

Bun uses JavaScriptCore, not V8 - behavior may differ in edge cases.

Commands

Run with Env File

$ bun --env-file=.env.local run script.ts

Load specific env file

Run Script

$ bun run script.ts

Execute a TypeScript/JavaScript file

Hot Reload

$ bun --hot run script.ts

Hot module reloading

List Scripts

$ bun run

Show all available scripts

Run Package Script

$ bun run <script-name>

Run script from package.json

Run in Smol Mode

$ bun --smol run script.ts

Use less memory (for constrained environments)

Watch Mode

$ bun --watch run script.ts

Auto-restart on file changes

Bun Shell

$ bun --shell

Start Bun's cross-platform shell

Bun