@material-ui/core/es/Tabs/ScrollbarSize.js

import _extends from "@babel/runtime/helpers/esm/extends";
import _objectWithoutPropertiesLoose from "@babel/runtime/helpers/esm/objectWithoutPropertiesLoose";
import * as React from 'react';
import PropTypes from 'prop-types';
import debounce from '../utils/debounce';
const styles = {
  width: 99,
  height: 99,
  position: 'absolute',
  top: -9999,
  overflow: 'scroll'
};
/**
 * @ignore - internal component.
 * The component originates from https://github.com/STORIS/react-scrollbar-size.
 * It has been moved into the core in order to minimize the bundle size.
 */

export default function ScrollbarSize(props) {
  const {
    onChange
  } = props,
        other = _objectWithoutPropertiesLoose(props, ["onChange"]);

  const scrollbarHeight = React.useRef();
  const nodeRef = React.useRef(null);

  const setMeasurements = () => {
    scrollbarHeight.current = nodeRef.current.offsetHeight - nodeRef.current.clientHeight;
  };

  React.useEffect(() => {
    const handleResize = debounce(() => {
      const prevHeight = scrollbarHeight.current;
      setMeasurements();

      if (prevHeight !== scrollbarHeight.current) {
        onChange(scrollbarHeight.current);
      }
    });
    window.addEventListener('resize', handleResize);
    return () => {
      handleResize.clear();
      window.removeEventListener('resize', handleResize);
    };
  }, [onChange]);
  React.useEffect(() => {
    setMeasurements();
    onChange(scrollbarHeight.current);
  }, [onChange]);
  return /*#__PURE__*/React.createElement("div", _extends({
    style: styles,
    ref: nodeRef
  }, other));
}
process.env.NODE_ENV !== "production" ? ScrollbarSize.propTypes = {
  onChange: PropTypes.func.isRequired
} : void 0;