import * as React from 'react' ; import MaterialIconButton from '@material-ui/core/IconButton' ; import { IIconButtonProps } from './IconButton.props' ; export { IIconButtonProps } from './IconButton.props' ; see https export const IconButton = React . forwardRef < HTMLButtonElement , IIconButtonProps > ( ( props , ref ) => < MaterialIconButton { ... props } ref = { ref } / > ) ; IconButton . displayName = 'IconButton' ; export default IconButton ;