import { TerraStorageObjectList } from './model/terra-storage-object-list';
import { Observable } from 'rxjs';
import { TerraUploadItem } from './model/terra-upload-item';
import { TerraUploadQueue } from './model/terra-upload-queue';
export declare abstract class TerraBaseStorageService {
    abstract name: string;
    abstract isImagePreviewEnabled: boolean;
    abstract queue: TerraUploadQueue;
    abstract getStorageList(): Observable<TerraStorageObjectList>;
    abstract createDirectory(path: string): Observable<any>;
    abstract uploadFiles(files: FileList | Array<File>, path: string): Array<TerraUploadItem>;
    abstract deleteFiles(keys: Array<string>): Observable<any>;
    prepareKey(value: string, isName?: boolean, isDirectory?: boolean): string;
}