Errors installing on Bash on Ubuntu for Windows

[otech47]

When running npm install -g https://github.com/ETCDEVTeam/emerald.git as instructed in the README, this error appears:

When trying with sudo npm install -g https://github.com/ETCDEVTeam/emerald.git a different one appears:

Is the README up to date or are there other configuration steps?

Node v8.4.0
NPM v5.3.0
Ubuntu v14.04.5

[otech47]

Bash for Ubuntu for Windows was also started with "Run as administrator" so these are very strange errors