import { createMuiTheme } from '@material-ui/core'; // overrides story { // reduced example from // https://github.com/mui-org/material-ui/blob/master/docs/src/pages/customization/typography/typography.md createMuiTheme({ overrides: { MuiCssBaseline: { '@global': { '@font-face': [{ fontFamily: 'custom', fontWeight: 600 }], }, }, }, }); // assuming "@global" is a class createMuiTheme({ overrides: { MuiCssBaseline: { '@global': { // @ts-expect-error fontWeight: 'bold', }, }, }, }); // reset.css createMuiTheme({ overrides: { MuiCssBaseline: { '@global': { ul: { 'list-style': 'none', }, p: { fontWeight: 'bolde', // undesired, should throw }, }, }, }, }); }