enum-driven-state-authoring

What problem does it solve?

This Skill helps developers avoid common pitfalls in state management by guiding them to model distinct states as sum types (enums with variants) from the initial code design, preventing complex conditional logic and optional field hell.

Core Features & Use Cases

• Sum Type Modeling: Guides the creation of sum types for entities with distinct modes, phases, or lifecycle states.
• Avoids Optional Fields: Prevents the use of optional fields that depend on other fields, leading to more robust and predictable code.
• Use Case: When building a user authentication flow, model states like Guest, LoggedIn, and Suspended as distinct enum variants, each holding only the necessary data for that state, rather than using optional fields on a single User object.

Quick Start

When writing new code, model state as sum types from the start.