node.js – nvm与npm配置“前缀”选项不兼容：

$nvm use v4.2.4

nvm is not compatible with the npm config "prefix" option: 
   currently set to "/Users/z/.npm-global"
Run `npm config delete prefix` or `nvm use --delete-prefix v4.2.4` to unset it.

解决方法

export NVM_DIR=~/.nvm
. $(brew --prefix nvm)/nvm.sh

(检查你在任何〜/ .bashrc或〜/ .profile或〜/ .bash_profile中没有任何其他与nvm相关的命令)
打开一个新的终端,这次不应该打印任何警告信息.
通过执行nvm –version命令检查nvm是否正常工作.
之后,使用Nvm install node&&&&&&&& nvm别名默认节点.

更多信息
我使用自制软件安装nvm,安装成功后,会通知我一些重要信息：

Please note that upstream has asked us to make explicit managing
nvm via Homebrew is unsupported by them and you should check any
problems against the standard nvm install method prior to reporTing.

You should create NVM's working directory if it doesn't exist:

  mkdir ~/.nvm

Add the following to ~/.bash_profile or your desired sHell
configuration file:

  export NVM_DIR=~/.nvm
  . $(brew --prefix nvm)/nvm.sh

You can set $NVM_DIR to any LOCATIOn,but leaving it unchanged from
/usr/local/Cellar/nvm/0.31.0 will destroy any nvm-installed Node installations
upon upgrade/reinstall.

我无视它,我面对这个问题：

nvm is not compatible with the npm config "prefix" option: currently set to "/usr/local/Cellar/nvm/0.31.0/versions/node/v5.7.1"
Run `nvm use --delete-prefix v5.7.1 --silent` to unset it.

我遵循之前的指南(从homebrew / nvm),之后我发现我需要重新安装NodeJs.所以我运行这个命令：

nvm install node && nvm alias default node

这个问题去了地狱！