In an attempt to write a karma test in the angularcli-meteor template, I added a test case, which depends on Meteor by importing 'meteor/meteor' in a class under test.
Then, if I issue
$> npm run test
I get
Module not found: Error: Can't resolve 'meteor/meteor'

To easily reproduce the issue, modify app.component.ts by calling anything on Meteor. E.g.

...
import { Meteor } from 'meteor/meteor'
...
ngOnInit() {
    console.log(Meteor.release)
    ...
  }

and run
$> npm run test