/**
 * List of events, supported for listening by Viewport.
 */
export interface ViewportEventsMap {
    /**
     * Being emitted when viewport height changed.
     * @param height - new height.
     */
    heightChange: (height: number) => void;
    /**
     * Being emitted when viewport stable height changed.
     * @param height - new stable height.
     */
    stableHeightChange: (stableHeight: number) => void;
    /**
     * Being emitted when viewport expansion status changed.
     * @param isExpanded - new expansion status.
     */
    expansionChange: (isExpanded: boolean) => void;
}
/**
 * Known Viewport event name.
 */
export declare type ViewportEventName = keyof ViewportEventsMap;