export interface ButtonGroupClasses {
  /** Styles applied to the root element. */
  root: string;
  /** Styles applied to the root element if `variant="contained"`. */
  contained: string;
  /** Styles applied to the root element if `variant="outlined"`. */
  outlined: string;
  /** Styles applied to the root element if `variant="text"`. */
  text: string;
  /** Styles applied to the root element if `disableElevation={true}`. */
  disableElevation: string;
  /** State class applied to the child elements if `disabled={true}`. */
  disabled: string;
  /** Styles applied to the first button in the button group. */
  firstButton: string;
  /** Styles applied to the root element if `fullWidth={true}`. */
  fullWidth: string;
  /** Styles applied to the root element if `orientation="horizontal"`. */
  horizontal: string;
  /** Styles applied to the root element if `orientation="vertical"`. */
  vertical: string;
  /** Styles applied to the children. */
  grouped: string;
  /** Styles applied to the root element if `color="primary"` */
  colorPrimary: string;
  /** Styles applied to the root element if `color="secondary"` */
  colorSecondary: string;
  /** Styles applied to the last button in the button group. */
  lastButton: string;
  /** Styles applied to buttons in the middle of the button group. */
  middleButton: string;
}
export type ButtonGroupClassKey = keyof ButtonGroupClasses;
export declare function getButtonGroupUtilityClass(slot: string): string;
declare const buttonGroupClasses: ButtonGroupClasses;
export default buttonGroupClasses;