使用npm config ls可以查看npm的配置信息如下：
registry:npm安装地址
user-agent:用户环境
prefix:模块安装位置
node bin location:node的安装位置
cwd:当前路径
HOME:用户主目录
C:\Users\333>npm config ls
; "builtin" config from D:\Software\Development\nodejs\node_modules\npm\npmrc
prefix = "C:\\Users\\333\\AppData\\Roaming\\npm"
; "user" config from C:\Users\333\.npmrc
registry = "https://registry.npm.taobao.org/"
; node bin location = D:\Software\Development\nodejs\node.exe
; node version = v16.15.1
; npm local prefix = C:\Users\333
; npm version = 8.11.0
; cwd = C:\Users\333
; HOME = C:\Users\333
; Run `npm config ls -l` to show all defaults.