import { ErrorUnion, OkUnion } from '../outputs';
/**
 * Informs TDLib on a file generation prograss
 * @param {Object} params
 * @param {string} [params.generationId] - The identifier of the generation process
 * @param {number} [params.expectedSize] - Expected size of the generated file, in
 * bytes; 0 if unknown
 * @param {number} [params.localPrefixSize] - The number of bytes already generated
 * @param {Object} state
 * @returns {OkUnion | ErrorUnion}
 */
export declare type SetFileGenerationProgressMethod = <ResponseT = OkUnion>(params: SetFileGenerationProgressParams, state?: Record<string, any>) => Promise<ResponseT | ErrorUnion>;
export interface SetFileGenerationProgressParams {
    /** The identifier of the generation process */
    generationId?: string;
    /** Expected size of the generated file, in bytes; 0 if unknown */
    expectedSize?: number;
    /** The number of bytes already generated */
    localPrefixSize?: number;
}