9027484ae1
* streams non compressed data in 64kb chunks (at least) * fmt * wip remove pause * fix default streaming and buffering * fix atomic lags * fix size * make chunked encoding work again (WIP streaming chunked) * WIP: chunked encoding streaming * fix end of streamings * working streaming + compression * add fixes + tests * fmt + fix proxy * fix oopsies * codegen after merge * fmt + fixes * more fixes * more fixes and logs * avoid double free * check empty before pop * check empty on pop * fix copy to real when complete * remove unnecessary logs * better has_schedule_callback swap, body locked size helper, remove isEmpty from unbounded_queue pop * fix response ref, fix body_size * add deflate support, fix error throw, add more tests * codegen after merge * remove logs, add connection close test * fix macOS build * fix redirect error option * make body_size more clear * support new Reponse(response) * toString DOMWrapper objects properly instead of supporting response in Response constructor * ignore headers with no name, add more tests * oops * handle transform with fetch * add gz image stream test * remove duplicate test * fix missing chunk on macOS under pressure * oops include all OS * some fixes * compare buffers instead of sizes * refactor err.err and protect it
Bun
Read the docs →
What is Bun?
Bun is still under development. Use it to speed up your development workflows or run simpler production code in resource-constrained environments like serverless functions. We're working on more complete Node.js compatibility and integration with existing frameworks. Join the Discord and watch the GitHub repository to keep tabs on future releases.
Bun is an all-in-one toolkit for JavaScript and TypeScript apps. It ships as a single executable called bun.
At its core is the Bun runtime, a fast JavaScript runtime designed as a drop-in replacement for Node.js. It's written in Zig and powered by JavaScriptCore under the hood, dramatically reducing startup times and memory usage.
bun run index.tsx # TS and JSX supported out of the box
The bun command-line tool also implements a test runner, script runner, and Node.js-compatible package manager. Instead of 1,000 node_modules for development, you only need bun. Bun's built-in tools are significantly faster than existing options and usable in existing Node.js projects with little to no changes.
bun test # run tests
bun run start # run the `start` script in `package.json`
bun install <pkg> # install a package
bunx cowsay 'Hello, world!' # execute a package
Install
Bun supports Linux (x64 & arm64) and macOS (x64 & Apple Silicon).
Linux users — Kernel version 5.6 or higher is strongly recommended, but the minimum is 5.1.
Windows users — Bun does not currently provide a native Windows build. We're working on this; progress can be tracked at this issue. In the meantime, use one of the installation methods below for Windows Subsystem for Linux.
# with install script (recommended)
curl -fsSL https://bun.sh/install | bash
# with npm
npm install -g bun
# with Homebrew
brew tap oven-sh/bun
brew install bun
# with Docker
docker pull oven/bun
docker run --rm --init --ulimit memlock=-1:-1 oven/bun
Upgrade
To upgrade to the latest version of Bun, run:
bun upgrade
Bun automatically releases a canary build on every commit to main. To upgrade to the latest canary build, run:
bun upgrade --canary
Quick links
- Intro
- CLI
- Runtime
- Ecosystem
- API
Contributing
Refer to the Project > Development guide to start contributing to Bun.
License
Refer to the Project > License page for information about Bun's licensing.