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Bun
The all-in-one JavaScript runtime — a faster replacement for Node, npm and Jest in one tool.
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Overview
Bun is a JavaScript runtime built in Zig that bundles everything: direct TypeScript execution, a package manager dramatically faster than npm, plus a built-in test runner and bundler. An agent can migrate your project from Node + npm + Jest to a single tool, fix scripts, and exploit Bun APIs like Bun.serve and bun:sqlite.
The difference is felt on every command: installs in seconds, tests several times faster — which directly speeds up the agent's own loop (edit → test → iterate).
The difference is felt on every command: installs in seconds, tests several times faster — which directly speeds up the agent's own loop (edit → test → iterate).
Who Is This For?
- Speeding up installs and tests in agent workflows
- Running TypeScript scripts with no build step
- Built-in APIs: server, SQLite, WebSocket
- Migrating from Node/npm/Jest to one tool
Installation
Setup for Claude Code
curl -fsSL https://bun.sh/install | bash
bun initConfiguration
// bun.lockb is binary — commit it. Run scripts: bun run devExplore AI Tools
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