writing-react-effects

Guides writing React components that avoid unnecessary useEffect calls.

Effects are an escape hatch for synchronizing with external systems (network, DOM, third-party widgets). If there's no external system, you don't need an Effect.

If a value can be computed from current props/state, do not store it in state or update it in an effect. Derive it during render to avoid extra renders and state drift. Do not set state in effects solely in response to prop changes; prefer derived values or keyed resets instead.

Escribe componentes de React sin useEffect innecesario. Úselo al crear/revisar componentes de React, refactorizar efectos o cuando el código use useEffect para transformar datos o manejar eventos. Fuente: dust-tt/dust.