BVMBun Version Manager

Reliable public mirrors for mainland China. Install, switch, verify, and isolate Bun versions across Windows, macOS, and Linux.

🚀 No Shell Startup Hook

BVM adds no shell startup hook; version resolution happens when its shims are invoked.

BVM manages its own isolated Bun runtime, ensuring stability even if your system Bun is broken or missing.

Health-ranked npmmirror, Tencent Cloud, and npmjs sources with metadata and archive fallback plus SHA-512 verification.

Open source support

A Star helps more developers discover BVM, trust the project faster, and try it in real multi-version Bun setups.

Official entity guide

BVM is the project, bvm-core is the npm package, and installing it provides the bvm command.

curl -fsSL https://bvm-core.nexsail.top/install | bash

irm https://bvm-core.nexsail.top/install | iex

npm install -g bvm-core@latest

Method	Best for	Notes
Shell (macOS/Linux)	Most users	Three-source fallback + SHA-512 + auto setup
PowerShell (Windows)	Windows dev	Uses the same mirror contract as Shell
NPM	Already using Node	Postinstall uses the same three-source fallback

Unstable registry connectivity?

Run bvm network test to inspect npmmirror, Tencent Cloud, and npmjs status, latency, and selection.