angular/angular.js — pull request #9210 by caitp (2014-09-22 16:22:08+00:00)
Title: fix($injector): throw when factory $get method does not return a value

BREAKING CHANGE:

Previously, not returning a value would fail silently, and an application
trying to inject the value owuld inject an undefined value, quite possibly
leading to a TypeError. Now, the application will fail entirely, and a reason
will be given.

Closes #4575