import { AxiosInstance } from "axios";
import { LivenessRequest, LivenessResponse } from "../types";
/**
 * Liveness Service – Verify live person detection.
 * Uses multipart/form-data to upload selfie images.
 */
export declare class LivenessService {
    private readonly httpClient;
    constructor(httpClient: AxiosInstance);
    /**
     * Submit a selfie image for liveness detection.
     *
     * @param request - Selfie image and detection options
     * @returns Liveness detection result with detailed checks
     * @throws {EkycError} When liveness detection fails
     */
    checkLiveness(request: LivenessRequest): Promise<LivenessResponse>;
}
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