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.

编写 React 组件而无需使用不必要的 useEffect。在创建/查看 React 组件、重构效果或代码使用 useEffect 转换数据或处理事件时使用。 来源：dust-tt/dust。