@mui/material/modern/Tabs/ScrollbarSize.js

Material UI is an open-source React component library that implements Google's Material Design. It's comprehensive and can be used in production out of the box.

'use client';

import * as React from 'react';
import PropTypes from 'prop-types';
import debounce from "../utils/debounce.js";
import { ownerWindow, unstable_useEnhancedEffect as useEnhancedEffect } from "../utils/index.js";
import { jsx as _jsx } from "react/jsx-runtime";
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,
    ...other
  } = props;
  const scrollbarHeight = React.useRef();
  const nodeRef = React.useRef(null);
  const setMeasurements = () => {
    scrollbarHeight.current = nodeRef.current.offsetHeight - nodeRef.current.clientHeight;
  };
  useEnhancedEffect(() => {
    const handleResize = debounce(() => {
      const prevHeight = scrollbarHeight.current;
      setMeasurements();
      if (prevHeight !== scrollbarHeight.current) {
        onChange(scrollbarHeight.current);
      }
    });
    const containerWindow = ownerWindow(nodeRef.current);
    containerWindow.addEventListener('resize', handleResize);
    return () => {
      handleResize.clear();
      containerWindow.removeEventListener('resize', handleResize);
    };
  }, [onChange]);
  React.useEffect(() => {
    setMeasurements();
    onChange(scrollbarHeight.current);
  }, [onChange]);
  return /*#__PURE__*/_jsx("div", {
    style: styles,
    ...other,
    ref: nodeRef
  });
}
process.env.NODE_ENV !== "production" ? ScrollbarSize.propTypes = {
  onChange: PropTypes.func.isRequired
} : void 0;