component-memoizer

What problem does it solve?

React apps often suffer from expensive cascading re-renders caused by referential inequality in props and inline objects or functions. This skill provides practical guidance to apply memoization techniques to stabilise renders and boost perceived performance.

Core Features & Use Cases

• Use useMemo to memoize expensive calculations and avoid recomputation on every render.
• Use useCallback to stabilize function references passed to child components.
• Use React.memo to prevent re-renders of pure components when props haven't changed.
• Use cases include large lists, form-heavy dashboards, and components with derived data.

Quick Start

Identify a laggy component, wrap expensive calculations with useMemo, wrap handlers with useCallback, and apply React.memo to heavy components to stop unnecessary re-renders.