Chapter 1. Strategies for Upgrading to Angular 2
This chapter will cover the following recipes:
Componentizing directives using the controllerAs encapsulation
Migrating an application to component directives
Implementing a basic component in AngularJS 1.5
Normalizing service types
Connecting Angular 1 and Angular 2 with UpgradeModule
Downgrading Angular 2 components to Angular 1 directives with downgradeComponent
Downgrading Angular 2 providers to Angular 1 services with downgradeInjectable