Exercise 07 - Invoking Actors

In this exercise, we’re going to move the ad-hoc interval logic that was in reactive code block directly into the machine instead by invoking a callback.

Goals

• Create a callback service that does one thing: calls back a TICK event on each interval defined by context.interval. This should look very similar to the reactive code block, so make sure to also return a cleanup function.
• In the running state, invoke that callback service using invoke. Since we’re still listening for that TICK event, we’re done!
• Remove the reactive function reference from the component, since we no longer need it.