通过brew安装后，npm坏了

所以我在我的Mac（High Sierra）上安装节点，npm和cordova + ionic，它给了我这个问题：

Julime-Air:~ julime$ brew install node
==> Downloading .3.0_1.high_sierra.bottle.tar.gz
Already downloaded: /Users/julime/Library/Caches/Homebrew/node-9.3.0_1.high_sierra.bottle.tar.gz
==> Pouring node-9.3.0_1.high_sierra.bottle.tar.gz
==> Caveats
Bash completion has been installed to:
  /usr/local/etc/bash_completion.d
==> Summary