state-machines

You can prevent impossible states in TypeScript by implementing type-safe state machines with discriminated unions. This pattern uses a 'status' property to enforce explicit transitions, ensuring predictable behavior during asynchronous operations and multi-step processes.

Handling multi-step form state with Zustand is best achieved using discriminated unions to enforce explicit transitions. This approach guarantees step validation before proceeding and clearly displays loading or error states during submission, all without requiring middleware.

Discriminated unions work for state management by using a shared 'status' property to narrow types, guaranteeing type safety. This mechanism ensures only valid properties are accessible for each specific state, preventing impossible combinations and allowing helper functions to safely extract data.

You do not need middleware to build a state machine in Zustand. This approach leverages the core Zustand store alongside discriminated unions and helper functions to enforce explicit state transitions, ensuring predictable behavior without adding extra dependencies.

To prevent invalid transitions during async API calls, implement type-safe state machines using discriminated unions. This pattern enforces explicit state changes for loading, success, and error statuses, ensuring safe property extraction and predictable application behavior.