Implementing the State Reducer Pattern

Our solution to the hacker’s feature request is to implement the state reducer pattern.

When the reader clicks the Header element, we’ll communicate the changes we propose to be made internally to the hacker, i.e., we’ll let the hacker know we want to update the expanded state internally.

The hacker will then check their own application state. If the reader has already viewed the secret resource, the hacker will communicate to our custom hook NOT to allow a state update.

There it is. The power of the state reducer pattern, giving control of the internal state updates to the user.

Implementation

Now, let’s write the technical implementation.

First, we’ll expect a second argument from the hacker, their own reducer.