Support older versions of angular/typescript:

[Bnaya]

This feature might lead the way to have graceful degradation support for typescript < 2.8
microsoft/TypeScript#26568

[shairez]

Thanks @Bnaya !

Looks amazing!

[shairez]

@Bnaya we talked about it offline, I don't remember if the conclusion was that this might not work well eventually

What do you say? should we close this issue?

[Bnaya]

Lets