// Copyright © 2022-2026 Partium, Inc. DBA Partium
import { Observable } from 'rxjs';
import { SdkError } from '../models/error';
import { INTERFACE } from '../models/log';
import { PFile } from '../models/p-file';
import { BACKEND_SERVICE, HttpsService } from '../services/http/https.service.interface';
export declare function createMultipartUploadUnsupportedError(): SdkError;
export declare function guardMultipartUpload<T>(file: PFile, proceed: () => Observable<T>): Observable<T>;
/**
 * Builds the standard partium-api multipart body: JSON `input` field + binary `image` from PFile.
 */
export declare function createPFileImageMultipartFormData(image: PFile, input?: object): FormData;
export declare function createPartiumInterfaceMultipartHeaders(eventInterface?: INTERFACE): Record<string, string>;
export declare function postPFileImageMultipartRequest<T>(httpsService: HttpsService, options: {
    url: string;
    image: PFile;
    input?: object;
    eventInterface?: INTERFACE;
    backend?: BACKEND_SERVICE;
}): Observable<T>;