So you're doing Redux, but is your Data Safe?

A core tenet of ngrx and the Redux pattern is that state changes occur only in the reducer, and only by returning a new state object. What some people fail to realize is that this is only a pattern, and it is not enforced in any way.

Best case, your application is one accidental modification away from crashing down like a house of cards. Worst case, there are subtle flaws in the workflow that you don't notice until it is in production.

In this talk, I will make the case for immutability, illustrate the difference between compile-time and run-time immutability, and then see how we can easily achieve both using the record-extension pattern, leveraging the power of both Typescript and Immutable.js.