@kirz/react-native-toolkit/lib/module/hooks/useAppActivityEffect.js

Toolkit to speed up React Native development

import { useEffect } from 'react';
import { AppState } from 'react-native';
export function useAppActivityEffect(callback, deps) {
  useEffect(() => {
    let lastCheckTimestamp = 0;
    const onStateChanged = async initial => {
      const newTimestamp = new Date().valueOf();
      if (newTimestamp - lastCheckTimestamp < 2000) {
        return; // small delay for too frequent requests
      }

      lastCheckTimestamp = newTimestamp;
      callback(initial);
    };
    const listener = AppState.addEventListener('change', async state => {
      if (state === 'active') {
        onStateChanged();
      }
    });
    onStateChanged(true);
    return () => {
      listener.remove();
    };
  }, deps);
}
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