Individual skill

state-machine-designer

Designs deterministic Finite State Machines (FSMs) and statecharts for complex UI workflows and backend order lifecycles.

skills/development/state-machine-designer/SKILL.md

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Aug 20, 2026
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## Purpose

Model complex lifecycles (orders, payments, multi-step wizards, IoT device connections) into mathematically sound, deterministic Finite State Machines (FSMs) with explicit states, events, guards, and transition side-effects.

## When to Use

- When code is polluted with dozens of boolean flags (`isLoading`, `isSubmitted`, `hasError`, `canRetry`) creating impossible states.
- Designing distributed transaction orchestrations (Saga lifecycles).
- Modeling complex frontend forms or media player states.

## What to Analyze

1. **State Space**: Exhaustive list of discrete, mutually exclusive states.
2. **Events / Triggers**: Explicit inputs that prompt transitions.