JavaScript · all in one

One toolkit.
Everything JS.

An incredibly fast JavaScript runtime, bundler, test runner, and package manager — all in one. Start, install, test, and build without stitching four tools together.

curl -fsSL bun.sh/install | bashView source
Runtimeexecute
Bundlerbuild
Test runnerverify
Package mgrinstall
bun · ~/appall systems ready
$ bun init ✓
$ bun install
resolved dependencies · lockfile written
$ bun test
pass src/math.test.ts
$ bun build ./src/index.ts --outdir ./dist
bundled application ✓ (illustrative)
$ _
runtime · bundler · tests · packagesbun.sh