@resourge/react-fetch/dist/hooks/useOnFocus/useOnFocus.native.js

[](LICENSE)

/**
 * react-fetch v1.41.3
 *
 * Copyright (c) resourge.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE.md file in the root directory of this source tree.
 *
 * @license MIT
 */
import { useEffect } from 'react';
import { AppState, Platform } from 'react-native';

const useOnFocus = (cb, onWindowFocus) => {
  useEffect(() => {
    if (onWindowFocus) {
      const {
        focus,
        blur,
        clear
      } = cb();
      const onAppStateChange = status => {
        if (Platform.OS !== 'web') {
          if (status === 'active') {
            focus();
            return;
          }
          blur();
        }
      };
      const subscription = AppState.addEventListener('change', onAppStateChange);
      return () => {
        clear();
        subscription.remove();
      };
    }
  }, [onWindowFocus]);
};

export { useOnFocus };
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