nt":false,"tarball":"http://registry.npm.taobao.org/babel-preset-stag

npm ERR! Unexpected end of input at 1:12777
npm ERR! nt":false,"tarball":"http://registry.npm.taobao.org/babel-preset-stag
npm ERR!                                                                      ^

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\LJ\AppData\Roaming\npm-cache\_logs\2017-09-07T10_10_05_066Z-debug.log

我的解决方案是：把C:\Users\LJ\AppData\Roaming\npm-cache这个目录中的东西都删了