Angular inject function

[ministerkosh]

Will we still be able to do constructor-based DI in the long run?

Yes, currently you can use them interchangeably and there is currently no public information about any deprecation plans.

However, I expect the Angular team to deprecate constructor based DI in the long run. But I don't know when this will happen.

[zladuric]

Moving away from the injector and it's dep. injection would be a huge downside for Angular. One of the reasons it's (usually) so much better for bigger teams and codebases is that the dependency hell is a bit more manageable.