How to use the @carbon/elements.breakpoints.md function in @carbon/elements

export const Tabs = props => {
  const tabList = useRef([]);
  const [activeTab, setActiveTab] = useState(0);
  const isMobile = useMedia({ maxWidth: breakpoints.md.width });
  const id = useId('tabs');

  // clear tablist when unmounted (switching between Select and TabList)
  useEffect(() => () => (tabList.current = []));

  return (
    
      {isMobile ? (
        <select>{props.children}</select>
      ) : (
        {props.children}
      )}
      {React.Children.map(props.children, (child, index) =&gt; {
        if (elementIsNullOrString(child)) return child;

import React from 'react';
import { settings } from 'carbon-components';
import classnames from 'classnames';
import { findKey, values } from 'lodash';
import {
  baseFontSize,
  breakpoints as carbonBreakpoints,
} from '@carbon/elements';
import { CodeSnippet } from 'carbon-components-react';

const { prefix } = settings;

const breakpoints = {
  sm: Number(carbonBreakpoints.sm.width.replace('rem', '')) * baseFontSize,
  md: Number(carbonBreakpoints.md.width.replace('rem', '')) * baseFontSize,
  lg: Number(carbonBreakpoints.lg.width.replace('rem', '')) * baseFontSize,
  xlg: Number(carbonBreakpoints.xlg.width.replace('rem', '')) * baseFontSize,
  max: Number(carbonBreakpoints.max.width.replace('rem', '')) * baseFontSize,
};

const defaultTypeValues = {
  'letter-spacing': 0,
};

const TypesetExample = props => (
  <div>
    {(props.typeSet || []).map(type =&gt; {
      const indexOfClosestLargerBreakpoint = Math.max(
        0,
        values(breakpoints).findIndex(
          width =&gt; props.simulatedScreenWidth &lt;= width</div>

{
      description: 'Display',
      key: 'display-03',
      name: 'display-03',
    },
    {
      description: 'Display',
      key: 'display-04',
      name: 'display-04',
    },
  ],
};

const breakpoints = {
  sm: Number(carbonBreakpoints.sm.width.replace('rem', '')) * baseFontSize,
  md: Number(carbonBreakpoints.md.width.replace('rem', '')) * baseFontSize,
  lg: Number(carbonBreakpoints.lg.width.replace('rem', '')) * baseFontSize,
  xlg: Number(carbonBreakpoints.xlg.width.replace('rem', '')) * baseFontSize,
  max: Number(carbonBreakpoints.max.width.replace('rem', '')) * baseFontSize,
};

const nextLargerBreakpointPx = viewportWidth =>
  values(breakpoints)[indexOfCurrentBreakpoint(viewportWidth) + 1];

const indexOfCurrentBreakpoint = viewportWidth =>
  findLastIndex(values(breakpoints), width => viewportWidth >= width);

const isWithinBreakpoint = (viewportWidth, currentBreakpoint) => {
  if (viewportWidth === currentBreakpoint) return true;
  return (
    viewportWidth >= currentBreakpoint &&
    viewportWidth < nextLargerBreakpointPx(currentBreakpoint)