Bun is joining Anthropic

Summary

TLDR: Bun has been acquired by Anthropic. Anthropic is betting on Bun as the infrastructure powering Claude Code, Claude Agent SDK, and future AI coding products & tools.Bun stays open-source & MIT-licensedBun continues to be extremely actively maintainedThe same team still works on BunBun is still built in public on GitHubBun's roadmap will continue to focus on high performance JavaScript tooling, Node.js compatibility & replacing Node.js as the default server-side runtime for JavaScriptClaude Code ships as a Bun executable to millions of users. If Bun breaks, Claude Code breaks. Anthropic has direct incentive to keep Bun excellent.We will help make coding tools like Claude Code & Claude Agent SDK faster & smallerWe get a closer first look at what's around the corner for AI coding tools, and make Bun better for itBun will ship faster.Almost five years ago, I was building a Minecraft-y voxel game in the browser. The codebase got kind of large, and the iteration cycle time took 45 seconds to test if changes worked. Most of that time was spent waiting for the Next.js dev server to hot reload.This was frustrating, and I got really distracted trying to fix it.I started porting esbuild's JSX & TypeScript transpiler from Go to Zig. Three weeks later, I had a somewhat working JSX & TypeScript transpiler. I spent much of that first year in a very cramped apartment in Oakland, just coding and tweeting about Bun.The runtimeTo get Next.js server side rendering to work, we needed a JavaScript runtime. And JavaScript runtimes need an engine to interpret & JIT compile the code. So after about a month of reading WebKit's source code trying to figure out how to embed JavaScriptCore with the same flexibility as what Safari does, I had the very initial version of Bun's JavaScript runtime.Bun v0.1.0 was released in July of 2022. A bundler, a transpiler, a runtime (designed to be a drop-in replacement for Node.js), test runner, and a package manager - all in one. We ended up reaching 2...