import { ErrorUnion, StorageStatisticsUnion } from '../outputs';
/**
 * Returns storage usage statistics. Can be called before authorization
 * @param {Object} params
 * @param {number} [params.chatLimit] - Maximum number of chats with the largest
 * storage usage for which separate statistics should be returned. All other chats will
 * be grouped in entries with chat_id == 0. If the chat info database is not used, the
 * chat_limit is ignored and is always set to 0
 * @param {Object} state
 * @returns {StorageStatisticsUnion | ErrorUnion}
 */
export declare type GetStorageStatisticsMethod = <ResponseT = StorageStatisticsUnion>(params: GetStorageStatisticsParams, state?: Record<string, any>) => Promise<ResponseT | ErrorUnion>;
export interface GetStorageStatisticsParams {
    /**
     * Maximum number of chats with the largest storage usage for which separate statistics
     * should be returned. All other chats will be grouped in entries with chat_id == 0.
     * If the chat info database is not used, the chat_limit is ignored and is always set
     * to 0
     */
    chatLimit?: number;
}