export declare function getTargetWindow(): any;
export declare function postMessage(targetWindow: Window, type: string, message: any, targetDomain?: string): void;
export declare function wrapMessage(type: string, message: any): any;
export interface EventHandlerFn {
    (e: StandardMessageObject): void;
}
export interface EventHandlerRemovable extends EventHandlerFn {
    remove(): void;
    listen(): void;
}
export declare function createMessageEventListener<EventType extends StandardMessageObject | StorageEvent | MessageEvent>(fn: EventHandlerFn): EventHandlerRemovable;
export interface StandardMessageObject {
    data: StandardMessagePayload;
    type: 'message' | 'storage' | '_wrapped_';
    origin: string;
    _uc_handled?: boolean;
    sendBack?: Window;
}
export interface StandardMessagePayload {
    eventType: string;
    message: any;
}
export declare function assumeMessage(event: StandardMessageObject, type: any, sourceDomain: any, callback: any): any;
export declare function triggerStorageEvent(type: any, message: any): void;
export declare function detectSupportPostMessageTo(targetWindow: Window): Promise<boolean>;