Conclusion

This example demonstrates how Transit extends beyond simple state machines to handle real-world complexity:

• States and messages with data: Both states and messages can carry data (like storedPin in DoorLocked or newPin in Lock), and handlers receive this data.
• Conditional transitions: The DSL supports transitions with multiple possible outcomes using guard labels (PinCorrect and PinIncorrect). The type system ensures that conditional transitions can only return valid target states, and each outcome must be associated with its corresponding guard label.