更新后npm无法运行，抛出TypeError错误求助

在Node.js终端中查看node版本（v16.17.0）和npm版本时一切正常，但在VS Code或PowerShell中执行npm -v命令时，出现如下错误：

C:\Program Files\nodejs\node_modules\npm\node_modules\socks-proxy-agent\dist\index.js:110
class SocksProxyAgent extends agent_base_1.Agent {
                                           ^

TypeError: Class extends value undefined is not a constructor or null
    at Object.<anonymous> (C:\Program Files\nodejs\node_modules\npm\node_modules\socks-proxy-agent\dist\index.js:110:44)
    at Module._compile (node:internal/modules/cjs/loader:1126:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1180:10)
    at Module.load (node:internal/modules/cjs/loader:1004:32)
    at Function.Module._load (node:internal/modules/cjs/loader:839:12)
    at Module.require (node:internal/modules/cjs/loader:1028:19)
    at require (node:internal/modules/cjs/helpers:102:18)
    at Object.<anonymous> (C:\Program Files\nodejs\node_modules\npm\node_modules\make-fetch-happen\lib\agent.js:174:29)
    at Module._compile (node:internal/modules/cjs/loader:1126:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1180:10)
    at Module.load (node:internal/modules/cjs/loader:1004:32)
    at Function.Module._load (node:internal/modules/cjs/loader:839:12)
    at Module.require (node:internal/modules/cjs/loader:1028:19)
    at require (node:internal/modules/cjs/helpers:102:18)
    at Object.<anonymous> (C:\Program Files\nodejs\node_modules\npm\node_modules\make-fetch-happen\lib\remote.js:7:18)
    at Module._compile (node:internal/modules/cjs/loader:1126:14)
C:\Program Files\nodejs\node_modules\npm\node_modules\socks-proxy-agent\dist\index.js:110
class SocksProxyAgent extends agent_base_1.Agent {
                                           ^

TypeError: Class extends value undefined is not a constructor or null
    at Object.<anonymous> (C:\Program Files\nodejs\node_modules\npm\node_modules\socks-proxy-agent\dist\index.js:110:44)
    at Module._compile (node:internal/modules/cjs/loader:1126:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1180:10)
    at Module.load (node:internal/modules/cjs/loader:1004:32)
    at Function.Module._load (node:internal/modules/cjs/loader:839:12)
    at Module.require (node:internal/modules/cjs/loader:1028:19)
    at require (node:internal/modules/cjs/helpers:102:18)
    at Object.<anonymous> (C:\Program Files\nodejs\node_modules\npm\node_modules\make-fetch-happen\lib\agent.js:174:29)
    at Module._compile (node:internal/modules/cjs/loader:1126:14)
    at Object.Module._extensions..js (node:internal/modules/cjs/loader:1180:10)
    at Module.load (node:internal/modules/cjs/loader:1004:32)
    at Function.Module._load (node:internal/modules/cjs/loader:839:12)
    at Module.require (node:internal/modules/cjs/loader:1028:19)
    at require (node:internal/modules/cjs/helpers:102:18)
    at Object.<anonymous> (C:\Program Files\nodejs\node_modules\npm\node_modules\make-fetch-happen\lib\remote.js:7:18)
    at Module._compile (node:internal/modules/cjs/loader:1126:14)

该错误源于socks-proxy-agent依赖的agent-base版本不兼容，或代理配置冲突，可按以下步骤解决：

• 清理代理配置
  执行命令清除npm代理设置：

  npm config rm proxy
  npm config rm https-proxy
  

  同时检查系统环境变量中的HTTP_PROXY和HTTPS_PROXY，如有配置，暂时删除或禁用。

• 重新安装全局npm
  直接更新npm到最新版本：

  npm install -g npm@latest
  

  若上述命令失败，可通过Node内置脚本重装npm：

  node -e "fs.rmSync('C:\\Program Files\\nodejs\\node_modules\\npm', { recursive: true, force: true })"
  curl -L https://www.npmjs.com/install.sh | node
  

• 校验终端Node环境一致性
  在VS Code和PowerShell中执行Get-Command node（Windows）或which node（类Unix），确认使用的Node路径与Node.js终端一致，避免多版本冲突。

内容的提问来源于stack exchange，提问作者DAaveMITT