import { DSR_MESSAGE_TYPES, DsrMessagePayloads } from './types.dsr';
/**
 * Subscribe to a given event type by its key.
 *
 * @param type The event type/key to subscribe to.
 * @param handler The handler function to call when the event is emitted.
 * @returns A Promise resolving to a cleanup function to unsubscribe from the event.
 */
declare function on(type: (typeof DSR_MESSAGE_TYPES)[keyof typeof DSR_MESSAGE_TYPES], handler: (data: DsrMessagePayloads[typeof type]) => Promise<void>): Promise<() => void>;
declare const _default: {
    close(): Promise<void>;
    getFile(payload: {
        id: import('../../../../main.lib').File["id"];
    }): Promise<import('../../../../main.lib').File>;
    getAppConfig(payload?: {
        app_name?: string;
    }): Promise<Record<string, any>>;
    embeddableReady(): Promise<void>;
    getEnv(): Promise<import('./types.dsr').DsrEnv>;
    on: typeof on;
};
export default _default;