npm ERR! Unexpected end of JSON

the error npm ERR! shasum check failed and npm ERR! Unexpected end of JSON input while parsing near'....' , will be solved by switching npm reigistry from the list of given npm registry.

List of Npm registry:

• https://registry.npmjs.org/ (Dfault One)
• http://r.cnpmjs.org/
• https://registry.npm.taobao.org/
• https://registry.nodejitsu.com/
• http://registry.mirror.cqupt.edu.cn
• https://skimdb.npmjs.com/registry

To switch just type

npm config set registry "https://registry.npmjs.com/"

Replace the registry url with the above urls check which one works for you.

After That:

• npm cache clear --force
• npm verify cache

now error will be solved.

参考链接：https://stackoverflow.com/questions/50189096/installing-create-react-app-gives-npm-err-shasum-check-failed-and-npm-err-unex/50191315#50191315