How to use the @shopify/polaris-tokens.fontStackBase function in @shopify/polaris-tokens

export default function UXPinWrapper({children}) {
  return React.createElement('div', {
    // Simulate default 'body' styles
    style: {
      color: tokens.colorInk,
      fontFamily: tokens.fontStackBase,
      webkitFontSmoothing: 'antialiased',
      textRendering: 'optimizeLegibility',
    },
  }, [React.createElement(AppProvider, {theme, i18n: {}}, children)]);
}