What is @types/use-sync-external-store?
The @types/use-sync-external-store package provides TypeScript type definitions for the useSyncExternalStore hook, which is a part of React's experimental API for subscribing to external stores. This hook allows you to synchronize your component's state with an external store without causing unnecessary re-renders, making it particularly useful for integrating non-React state management libraries with React components.
Type-safe integration with external stores
This code demonstrates how to create a custom hook that uses useSyncExternalStore to subscribe to an external store. The hook takes a store object with subscribe and getState methods, subscribes to the store, and returns the current state. TypeScript types ensure the integration is type-safe.
import { useSyncExternalStore } from 'use-sync-external-store';
function useCustomStore(store) {
const state = useSyncExternalStore(
store.subscribe,
store.getState
);
return state;
}