Updating the Client: `flashMessage` Component

Updating component.js

In the previous updates, we’ve been assuming that setting the flashMessage field of state will show the message on the current screen, be it the sign-in screen or the game playing screen. To make this happen, we need to add a component that displays this message, and we need to pass the flashMessage down to it.

The component itself will be a simple p element containing the text, but only when it is present. We’ll place this in the components.js file.