react-native-rolling-bar/lib/module/util/useInterval.js

Rolling bar (banner) UI for React Native

// by Dan Abramov
// https://overreacted.io/making-setinterval-declarative-with-react-hooks/
import { useRef, useEffect } from 'react';
export default function useInterval(callback, delay) {
  const savedCallback = useRef();
  useEffect(() => {
    savedCallback.current = callback;
  });
  useEffect(() => {
    function tick() {
      var _savedCallback$curren;

      (_savedCallback$curren = savedCallback.current) === null || _savedCallback$curren === void 0 ? void 0 : _savedCallback$curren.call(savedCallback);
    }

    let id = setInterval(tick, delay);
    return () => clearInterval(id);
  }, [delay]);
}
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