import { Observable } from 'rxjs';
import { CompressedData } from './compressedData.interface';
export declare class Compression {
    private base64Index;
    private indexBase64;
    constructor();
    private generateBase64Index;
    compressBlob(blob: Blob): Observable<CompressedData>;
    decompressBlob(compressedData: CompressedData): Blob;
    private compressStringBase64;
    private decompressStringBase64;
}