import { HttpClient } from '@angular/common/http';
import { Observable } from 'rxjs';
import { TransferState } from '@angular/platform-browser';
import { EmLoggerService } from '../logging/em-logger.service';
export declare class DocumentViewerService {
    private log;
    private httpClient;
    private state;
    constructor(log: EmLoggerService, httpClient: HttpClient, state: TransferState);
    getDocumentMetadata(documentUri: any): Observable<any>;
}
