./lib/node_modules/npm/bin/npm-cli.js中的require('../lib/utils/unsupported.js')导致无法找到模块'../lib/utils/unsupported.js'错误。

根据nodejs require docs，所需的模块相对于文件进行搜索，因为它以../开头。

因此，如果我们从。/lib/node_modules/npm/bin/npm-cli.js开始选择相对路径../lib/utils/unsupported.js，那么所需的模块必须位于。/lib/node_modules/npm/lib/utils/unsupported.js中。如果它不在那里，我看到两个选项:

the installation is corrupt, in which case Vincent Ducastel's answer to reinstall node might work npm is no symlink to ./lib/node_modules/npm/bin/npm-cli.js. This is what caused the error in my setup. If you call npm, it will typically find it be searching it in the directories listed in the PATH env var. It might for example be located in ./bin. However, npm in a ./bin directory should only be a symlink to the aforementioned ./lib/node_modules/npm/bin/npm-cli.js. If it is not a symlink but directly contains the code, somewhere in the installation process the symlink got replaced by the file it links to. In this case, it should be sufficient to recreate the symlink: cd ./bin; rm npm; ln -s ../lib/node_modules/npm/bin/npm-cli.js npm (update: command fixed, thx @massimo)

所有建议检查NODE_PATH或npmrc配置的答案都应该被忽略，因为相对地搜索模块时不会考虑这些。

尝试删除/usr/local/lib/node_modules/npm并重新安装node。这应该有用。

在MacOS上使用Homebrew:

sudo rm -rf /usr/local/lib/node_modules/npm
brew reinstall node

我也遇到过类似的问题。当我尝试通过npm test执行Mocha时，无法找到/lib/utils目录。我尝试了这里提到的解决方案，但没有成功。最终，我卸载并重新安装了Mocha包，它是我工作的npm项目中的一个依赖项，在那之后它就工作了。因此，如果有人在将npm包作为依赖项安装时遇到了这个问题，请尝试卸载并重新安装该包(如果您还没有安装过)!

这是一个关于从你的计算机操作系统中移除节点的有用视频和博客文章。这是一种不同的删除方法，基于您最初安装节点的方式(brew vs.从https://nodejs.org/en/下载的二进制文件)

if you installed node with Homebrew then brew uninstall node will work. Verify that with running a node -v command in your terminal. Otherwise and if you have installed the binary file from nodeJS's websitethen you have to run this command in your terminal: sudo rm -rf /usr/local/{bin/{node,npm},lib/node_modules/npm,lib/node,share/man/*/node.*}. Again, verify that with running a node -v command. In both cases, successful removal of node should result in bash not recognizing what node is if it is completely removed

在我的情况下，它是$NODE_PATH丢失:

NODE="/home/ubuntu/local/node" #here your user account after home
NODE_PATH="/usr/local/lib/node_modules" 
PATH="$PATH:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:$NODE/bin:$NODE/lib/node_modules"

只回显$NODE_PATH空表示未设置。建议将它们添加到.bashrc中。

在Mac OS X(10.12.6)上，我通过以下方法解决了这个问题:

brew uninstall --force node
brew install node

然后我得到一个错误，抱怨节点postinstall失败，并重新运行brew postinstall节点

然后我得到一个错误:

permission denied @ rb_sysopen /usr/local/lib/node_modules/npm/bin/npx

我通过以下方法解决了这个错误:

sudo chown -R $(whoami):admin /usr/local/lib/node_modules

现在我不会再得到这个错误了。