← Back to Demos
Checkout State Machine
Multi-step checkout with explicit state machine. Handles payment failures, session recovery, and edge cases. Shows how to model complex flows with predictable behavior.
ReactTypeScriptState Machines
Current State: cart
1
Cart2
Shipping3
Payment4
CompleteYour Cart
Mechanical Keyboard
Qty: 1
$149.99
USB-C Hub
Qty: 2
$119.98
Monitor Stand
Qty: 1
$89.99
Subtotal$359.96
Shipping$9.99
Total$369.95
Demo Features:
- Explicit state machine with defined transitions
- Session persistence (refresh the page mid-checkout to test recovery)
- Graceful error handling with retry capability
- Simulated async payment processing
- No external state machine library (demonstrates the pattern)
This Demo Answers
“Can this person handle complex user flows without spaghetti code?”