npm 错误：找不到模块“semver”

Question

当我尝试运行 npm 命令时出现以下错误

root@localhost:# npm --version
internal/modules/cjs/loader.js:584
    throw err;
    ^

Error: Cannot find module 'semver'
    at Function.Module._resolveFilename (internal/modules/cjs/loader.js:582:15)
    at Function.Module._load (internal/modules/cjs/loader.js:508:25)
    at Module.require (internal/modules/cjs/loader.js:637:17)
    at require (internal/modules/cjs/helpers.js:22:18)
    at Object.<anonymous> (/usr/share/npm/lib/utils/unsupported.js:2:14)
    at Module._compile (internal/modules/cjs/loader.js:701:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:712:10)
    at Module.load (internal/modules/cjs/loader.js:600:32)
    at tryModuleLoad (internal/modules/cjs/loader.js:539:12)
    at Function.Module._load (internal/modules/cjs/loader.js:531:3)
Aborted

我尝试卸载并重新安装 npm 和 nodejs，但仍然收到错误

我怎样才能解决这个问题？

Answer 1

1. 我手动卸载node并npm：

   sudo rm -rf /usr/local/bin/npm /usr/local/share/man/man1/node* /usr/local/lib/dtrace/node.d ~/.npm ~/.node-gyp /opt/local/bin/node /opt/local/include/node /opt/local/lib/node_modules 
   
   sudo rm -rf /usr/local/lib/node* ; sudo rm -rf /usr/local/include/node* ; sudo rm -rf /usr/local/bin/node*
   
   sudo apt-get purge nodejs npm
   

2. 我重新安装node并npm通过从Node.js下载手动：

   tar -xf node-v5.9.0-linux-x64.tar.xz
     sudo mv node-v5.9.0-linux-x64/bin/* /usr/local/bin/
     sudo mv node-v5.9.0-linux-x64/lib/node_modules/ /usr/local/lib/
   
   # Verify installation:
     node -v ; npm -v