interface PanelUiState {
    leftSideBarVisible: boolean;
    rightSideBarVisible: boolean;
}
export interface PanelUiAction {
    type: 'setUi';
    ui: Partial<PanelUiState>;
}
export interface UseResponsivePanelsArgs {
    /** Current Puck `leftSideBarVisible`. */
    leftVisible: boolean;
    /** Current Puck `rightSideBarVisible`. */
    rightVisible: boolean;
    /** Puck's dispatch. Undefined until the store is ready. */
    dispatch: ((action: PanelUiAction) => void) | undefined;
}
export declare function initialPanelUi(): PanelUiState;
/**
 * Collapses the left panel then the right as the window narrows, and reopens
 * them as it widens again.
 *
 * Divergence from the last auto-dispatched value is how a user action is
 * detected, which covers every mutation path — the subheader toggles, Puck's own
 * in-panel collapse buttons, the AI panel's rail bridge — without threading a
 * flag through each handler.
 */
export declare function useResponsivePanels({ leftVisible, rightVisible, dispatch, }: UseResponsivePanelsArgs): void;
export {};