content: import React from 'react';
  import PropTypes from 'prop-types';
  import clsx from 'clsx';
  import useEventCallback from '../utils/useEventCallback';
  var useEnhancedEffect = typeof window === 'undefined' ? React.useEffect : React.useLayoutEffect;
  /**
   * @ignore - internal component.
   */
  
  function Ripple(props) {
    var classes = props.classes,
        _props$pulsate = props.pulsate,
        pulsate = _props$pulsate === void 0 ? false : _props$pulsate,
        rippleX = props.rippleX,
        rippleY = props.rippleY,
        rippleSize = props.rippleSize,
        inProp = props.in,
        _props$onExited = props.onExited,
        onExited = _props$onExited === void 0 ? function () {} : _props$onExited,
        timeout = props.timeout;
  
    var _React$useState = React.useState(false),
        leaving = _React$useState[0],
        setLeaving = _React$useState[1];
  
    var rippleClassName = clsx(classes.ripple, classes.rippleVisible, pulsate && classes.ripplePulsate);
    var rippleStyles = {
      width: rippleSize,
      height: rippleSize,
      top: -(rippleSize / 2) + rippleY,
      left: -(rippleSize / 2) + rippleX
    };
    var childClassName = clsx(classes.child, leaving && classes.childLeaving, pulsate && classes.childPulsate);
    var handleExited = useEventCallback(onExited); // Ripple is used for user feedback (e.g. click or press) so we want to apply styles with the highest priority
  
    useEnhancedEffect(function () {
      if (!inProp) {
        // react-transition-group#onExit
        setLeaving(true); // react-transition-group#onExited
  
        var timeoutId = setTimeout(handleExited, timeout);
        return function () {
          clearTimeout(timeoutId);
        };
      }
  
      return undefined;
    }, [handleExited, inProp, timeout]);
    return React.createElement("span", {
      className: rippleClassName,
      style: rippleStyles
    }, React.createElement("span", {
      className: childClassName
    }));
  }
  
  process.env.NODE_ENV !== "production" ? Ripple.propTypes = {
    /**
     * Override or extend the styles applied to the component.
     * See [CSS API](#css) below for more details.
     */
    classes: PropTypes.object.isRequired,
  
    /**
     * @ignore - injected from TransitionGroup
     */
    in: PropTypes.bool,
  
    /**
     * @ignore - injected from TransitionGroup
     */
    onExited: PropTypes.func,
  
    /**
     * If `true`, the ripple pulsates, typically indicating the keyboard focus state of an element.
     */
    pulsate: PropTypes.bool,
  
    /**
     * Diameter of the ripple.
     */
    rippleSize: PropTypes.number,
  
    /**
     * Horizontal position of the ripple center.
     */
    rippleX: PropTypes.number,
  
    /**
     * Vertical position of the ripple center.
     */
    rippleY: PropTypes.number,
  
    /**
     * exit delay
     */
    timeout: PropTypes.number.isRequired
  } : void 0;
  export default Ripple;