import { AxiosInstance } from "axios";
import { OcrRequest, OcrResponse } from "../types";
/**
 * OCR Service – Extract information from ID card images (CMND/CCCD).
 * Uses multipart/form-data to upload document images.
 */
export declare class OcrService {
    private readonly httpClient;
    constructor(httpClient: AxiosInstance);
    /**
     * Submit front and back ID card images for OCR extraction.
     *
     * @param request - Document images and options
     * @returns Extracted document information
     * @throws {EkycError} When OCR fails
     */
    performOcr(request: OcrRequest): Promise<OcrResponse>;
}
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