import './TS_ButtonGroup.scss';
import { ComponentSync } from '../../core/ComponentSync.js';
import { InferProps, InferState } from '../../utils/types.js';
import { ButtonGroup_Props, ButtonGroup_State } from './types.js';
export declare class TS_ButtonGroup<ButtonKey extends string = string> extends ComponentSync<ButtonGroup_Props<ButtonKey>, ButtonGroup_State<ButtonKey>> {
    protected deriveStateFromProps(nextProps: InferProps<this>, state: InferState<this>): InferState<this>;
    private handleClick;
    private handleClick_Controlled;
    private handleClick_NonControlled;
    private renderButton;
    render(): import("react/jsx-runtime").JSX.Element;
}