import { FileService } from '../lib-core/files-service-base';
import { DmsApplicationService } from '../lib-core/application-context-service';
export declare class BackendFileService extends FileService {
    constructor(dms: DmsApplicationService);
    getDirFiles(folder: string): Promise<string[]>;
    fileWrite(fileName: string, fileContent: string | ArrayBuffer | File, contentType?: string): Promise<void>;
    private validateFilePath;
    fileRead(fileName: string, options?: {
        mimeType?: string;
    }): Promise<any>;
    fileDelete(fileName: string): Promise<void>;
    fileExist(fileName: string): Promise<boolean>;
    getFileNativeUri(fileName: string): Promise<string>;
}