import { AxiosInstance } from "axios";
import { FaceMatchRequest, FaceMatchResponse } from "../types";
/**
 * Face Match Service – Compare selfie with document photo.
 * Uses multipart/form-data to upload face images.
 */
export declare class FaceMatchService {
    private readonly httpClient;
    constructor(httpClient: AxiosInstance);
    /**
     * Compare a selfie image with a document photo for identity verification.
     *
     * @param request - Selfie and document images with threshold
     * @returns Face comparison result with similarity score
     * @throws {EkycError} When face match fails
     */
    matchFaces(request: FaceMatchRequest): Promise<FaceMatchResponse>;
}
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