d78ecc76c8
* minify * Update renamer.zig * --minify-whitespace * Speed up minification a little * handle private names * 5% faster minification * use helper function * fix nested scope slots * `bun build --minify` gets another +8% faster * print semicolons afterwards * print semicolon after checking error * after all error checking * Delete code for generating legacy bundes * remove extra whitespace around if statements * print space before import identifier * Use `@constCast` * Make `S.Local#decls` use `BabyList(Decl)` * Add `fromSlice` helper to `BabyList` * Remove unnecessary optional chains * minify `undefined, true, false` * Another @constCast * Implement merge adjacent local var * Support --minify in `bun build --transform` * skip comments when counting character frequencies * Don't wrap commonjs with --transform on (unless targeting bun) * Support --minify in the runtime * Fix edgecase with import * as * don't infinite loop * --trnasform shouldn't mess with require * Only track comments when minifying --------- Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>
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 keeps 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.