export declare class RadioButtonGroup {
    private errorStates;
    el: HTMLIfxRadioButtonGroupElement;
    /** Layout direction of the checkbox group (horizontal or vertical). */
    readonly alignment: "horizontal" | "vertical";
    /** Size of the checkbox group (e.g. small, medium). */
    readonly size: string;
    /** Whether to show the group label above the checkboxes. */
    readonly showGroupLabel: boolean;
    /** Text used as the group label. */
    readonly groupLabelText: string;
    /** Whether to show a caption under the group. */
    readonly showCaption: boolean;
    /** Text used for the caption below the group. */
    readonly captionText: string;
    /** Whether to show an icon next to the caption text. */
    readonly showCaptionIcon: boolean;
    /** Whether selecting at least one checkbox is required. */
    readonly required: boolean;
    hasErrors: boolean;
    handleRadioButtonError(event: CustomEvent): void;
    /** Method to set the error state of all radio-butttons in the group */
    setGroupError(error: boolean): Promise<void>;
    componentWillLoad(): void;
    componentDidLoad(): Promise<void>;
    private handleSlotChange;
    private initializeState;
    private updateHasErrors;
    render(): any;
}