If shower is not installed globally, the presentation will not be created

In the basic shower/cli template, the "prepare" command is added, which turns out to be reserved in npm: https://docs.npmjs.com/misc/scripts.

This command will be called before installing the dependencies, and since shower is not yet installed the installation will break.

You need to rename the NPM script to build or package so that it is not called when you install dependencies.