/var/lang/lib/node_modules/npm/node_modules/node-gyp
This explorer reads the filesystem of the server it runs on, so /workspace/user isn't present here. Browsing and the terminal still work against this server's own disk from /.
If you believe you have found a security issue in the software in thisrepository, please consult https://github.com/nodejs/node/blob/HEAD/SECURITY.md.