nvm源码 nvm is a version manager for node.js, designed to be installed per-user, and invoked per-shell. nvm works on any POSIX-compliant shell (sh, dash, ksh, zsh, bash), in particular on these platforms: unix, macOS, and windows WSL.

nvm和n都是node版本管理工具 为了解决node各种版本存在不兼容现象 nvm是让你在同一台机器上安装和切换不同版本的node的工具