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Bun

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Also called Bun.js

What is Bun?

An incredibly fast, all-in-one JavaScript runtime and toolkit designed as a drop-in replacement for Node.js, featuring built-in bundling and testing tools.

Bun is a modern runtime built from scratch in Zig and powered by Apple's JavaScriptCore engine. It natively supports TypeScript and JSX without configuration, and executes code significantly faster than Node.js. It replaces multiple distinct tools by acting as a runtime, package manager, bundler, and test runner simultaneously.

How it relates to Orbit

A project’s Servers tab can start a Bun dev server like any other saved command. See Configure Dev Servers for details.

When you would use it

You use Bun when you want a significantly faster, all-in-one alternative to the traditional Node.js ecosystem, reducing the number of configuration files and dependencies required.

Common operations

  • Installing npm packages drastically faster than the standard npm install.
  • Running TypeScript backend scripts natively without a compilation step.

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