Depending on the operating system you are using, you might get warnings like these:
- npm WARN optional SKIPPING OPTIONAL DEPENDENCY: email@example.com (node_modules\fsevents)
Warnings for sure are useful during development, but they just overload build servers with noise that should only be there when requested.
You could use npm install --loglevel=error to prevent the warnings to show up in your build logs.
In case you have hard time finding an issue, you could go with npm install --loglevel=silly
(loglevels: silent, error, warn, info, verbose, silly - see also https://docs.npmjs.com/misc/config)