npm shrinkwrap无关模块

Question

存在以下问题 - 我安装了所有模块，并尝试制作npm-shrinkwrap.json文件：

npm shrinkwrap

但我总是收到以下错误：

npm ERR! Darwin 14.3.0
npm ERR! argv "/usr/local/Cellar/node/4.1.2/bin/node" "/usr/local/bin/npm" "shrinkwrap"
npm ERR! node v4.1.2
npm ERR! npm  v2.10.1

npm ERR! Problems were encountered
npm ERR! Please correct and try again.
npm ERR! extraneous: core-js@1.2.6 /Users/ulnda/projects/folder/node_modules/my-module/node_modules/webdriverio/node_modules/core-js
npm ERR! extraneous: core-js@1.2.6 /Users/ulnda/projects/folder/node_modules/core-js
npm ERR!
npm ERR! If you need help, you may report this error at:
npm ERR!     <https://github.com/npm/npm/issues>

npm ERR! Please include the following file with any support request:
npm ERR!     /Users/ulnda/projects/folder/npm-debug.log

这是什么意思？我该如何解决？提前致谢！

Answer 1

在收缩包装之前尝试npm prune。