Check out a free preview of the full Reactive Angular 2 with ngrx course:
The "Challenge 5" Lesson is part of the full, Reactive Angular 2 with ngrx course featured in this preview video. Here's what you'd learn in this lesson:

In this challenge you will create a reducer for the selectedWidget. You will register the reducer with provideStore and use the store.select and store.dispatch methods.

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