funda-ui/Utils/useInterval.js

React components using pure Bootstrap 5+ which does not contain any external style and script libraries.

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		exports["RPB"] = factory(require("react"));
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/**
 * Provides a convenient way to create and manage intervals
 * 
 * @usage:

const App = () => {
    const [count, setCount] = useState(0);
    const [list, setList] = useState([]);

    const { startTimer, stopTimer } = useInterval(() => {
        setCount(count + 1);
    }, 1000);

    const { startTimer: startTimerGetList, stopTimer: stopTimerGetList } = useInterval(() => {
        setList((prevState) => {
            return [...prevState, Math.random()]
        });
    }, 1000, false);

    const handleGetList = () => {
        startTimerGetList();
    };

    useEffect(() => {
        handleGetList();
    }, []);

    return (
        <div className="app">{count}{list.join(',')}</div>
    );
};

 */

var useInterval = function useInterval(fn, delay) {
  var enabled = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;
  var ref = (0,react__WEBPACK_IMPORTED_MODULE_0__.useRef)(null);
  var intervalIdRef = (0,react__WEBPACK_IMPORTED_MODULE_0__.useRef)(null);
  var startTimer = (0,react__WEBPACK_IMPORTED_MODULE_0__.useCallback)(function () {
    intervalIdRef.current = setInterval(function () {
      ref.current && ref.current();
    }, delay);
  }, [ref]);
  var stopTimer = (0,react__WEBPACK_IMPORTED_MODULE_0__.useCallback)(function () {
    clearInterval(intervalIdRef.current);
    intervalIdRef.current = null;
  }, []);
  (0,react__WEBPACK_IMPORTED_MODULE_0__.useEffect)(function () {
    ref.current = fn;
  }, [fn]);
  (0,react__WEBPACK_IMPORTED_MODULE_0__.useEffect)(function () {
    if (enabled) {
      startTimer();
      return function () {
        return stopTimer();
      };
    }
  }, [enabled]);
  return {
    startTimer: startTimer,
    stopTimer: stopTimer
  };
};
/* harmony default export */ const __WEBPACK_DEFAULT_EXPORT__ = (useInterval);
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