writings
writings

why state machines make better code than loose booleans

how juggling multiple boolean flags creates hidden UI bugs, and how explicit status states keep your codebase clean and bulletproof.

published
nov 2025
reading time
8 min

isLoading, isError, isEmpty, isStale... as features grow, loose boolean flags multiply into impossible state combinations.

switching to explicit status states makes invalid UI states impossible to represent in code.

you don't need heavy third-party libraries for this — simple TypeScript union types and reducers keep your component state predictable.