webpack安装出现Unexpected end of input？

Question

D:\phpStudy1\WWW\myexpress\web-pack>npm i -D webpack
npm ERR! Unexpected end of input at 1:19108
npm ERR! 85ee90a76dbf346","tarball":"https://registry.npmjs.org/ajv/-/ajv-0.4.
npm ERR!                                                                      ^

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\Administrator\AppData\Roaming\npm-cache\_logs\2017-09-22T0
1_39_32_917Z-debug.log

Answer 1

Unexpected end of input就是下载出错，国内网络问题，换源即可

Answer 2

换淘宝源吧， cnpm