React State Machines with XState v5 Overview State machines make impossible states unrepresentable by modeling UI behavior as explicit states, transitions, and events. XState v5 (2.5M+ weekly npm downloads) unifies state machines with the actor model—every machine is an independent entity with its own lifecycle, enabling sophisticated composition patterns. When to Use This Skill Trigger patterns: - Boolean flag explosion: multiple , , flags - Implicit states: writing to derive mode - Defensive coding: guards before state updates to prevent invalid transitions - Timing coordination: timeouts,…