Install Bun — get started in seconds

One command, one self-contained binary, no dependencies. Uninstalling is deleting a file.
Concepts, the runtime, and every built-in API.
Task-focused recipes: HTTP, databases, testing, deployment.
Generated from Bun's TypeScript definitions.
Ask questions and hang out with the community.
The fast all-in-one JavaScript runtime & toolkit. Now part of Anthropic.
Baked with ♥ in San Francisco · © 2026 Anthropic, PBC