Github user jeffsteinmetz commented on the pull request: https://github.com/apache/incubator-zeppelin/pull/543#issuecomment-192379971 I too confirmed, the build runs in the VM without NPM / Node installed. The VM installs node and ruby (for docs only) so that a developer can build and test updates to their code outside of the Maven workflow. Let me know if you think there is a documentation location at the top of the project that you feel would be beneficial. It could be added to: https://zeppelin.incubator.apache.org/docs/0.6.0-incubating-SNAPSHOT/development/howtocontribute.html
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