Installing directly from git repo doesn't work

[frangio]

Installing the dependency directly from GitHub doesn't work. There was a StackOverflow question posted about this.

The problem is that npm doesn't install devDependencies when installing from git, but it runs our prepack script which uses them so it doesn't work. I'm pretty sure that this is an npm bug, so I'm marking the issue as blocked. There is an issue open (npm/npm#19564) but it has had no official reply and is basically inactive. 🤦‍♂️

It's not serious, but it can be cumbersome when developing.