@data-client/react/legacy/hooks/useSubscription.js

Async State Management without the Management. REST, GraphQL, SSE, Websockets, Fetch

'use client';

import { useEffect } from 'react';
import useController from './useController.js';

/**
 * Keeps a resource fresh by subscribing to updates.
 * @see https://dataclient.io/docs/api/useSubscription
 */
export default function useSubscription(endpoint, ...args) {
  const controller = useController();
  const key = args[0] !== null ? endpoint.key(...args) : '';
  useEffect(() => {
    if (!key) return;
    // typescript cannot infer truthy key means args is not null
    const cleanedArgs = args;
    controller.subscribe(endpoint, ...cleanedArgs);
    return () => {
      controller.unsubscribe(endpoint, ...cleanedArgs);
    };

    // eslint-disable-next-line react-hooks/exhaustive-deps
  }, [controller, key]);
}
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