Unhandled rejection Error: EACCES: permission denied, open '/Users/yld/.npm/_cacache/index-v5/a7/80/54166f62863511a69247af817869d4d5b8b460b7deb990eafca09bd3dbb6'
npm ERR! cb() never called!
npm ERR! This is an error with npm itself. Please report this error at:
npm ERR! <https://npm.community>
npm ERR! A complete log of this run can be found in:
npm ERR! /Users/yld/.npm/_logs/2019-07-16T07_02_11_947Z-debug.log
重置npm相关文件夹的权限，并分配给当前用户
sudo chown -R $USER:$GROUP ~/.npm
sudo chown -R $USER:$GROUP ~/.config