Built-in React APIs

In addition to Hooks and Components, the react package exports a few other APIs that are useful for defining components. This page lists all the remaining modern React APIs.

createContext lets you define and provide context to the child components. Used with useContext.
forwardRef lets your component expose a DOM node as a ref to the parent. Used with useRef.
lazy lets you defer loading a component’s code until it’s rendered for the first time.
memo lets your component skip re-renders with same props. Used with useMemo and useCallback.
startTransition lets you mark a state update as non-urgent. Similar to useTransition.

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