import { ErrorUnion, OkUnion } from '../outputs';
/**
 * Handles a push notification. Returns error with code 406 if the push notification
 * is not supported and connection to the server is required to fetch new data. Can
 * be called before authorization
 * @param {Object} params
 * @param {string} [params.payload] - JSON-encoded push notification payload with
 * all fields sent by the server, and "google.sent_time" and "google.notification.sound"
 * fields added
 * @param {Object} state
 * @returns {OkUnion | ErrorUnion}
 */
export declare type ProcessPushNotificationMethod = <ResponseT = OkUnion>(params: ProcessPushNotificationParams, state?: Record<string, any>) => Promise<ResponseT | ErrorUnion>;
export interface ProcessPushNotificationParams {
    /**
     * JSON-encoded push notification payload with all fields sent by the server, and "google.sent_time"
     * and "google.notification.sound" fields added
     */
    payload?: string;
}