/**
 * RunPod Backend
 *
 * Implements ComfyBackend using RunPod serverless.
 */
import { ComfyBackend, GenerationResult, PortraitParams, TTSParams, LipSyncParams, ImagineParams, ImageToVideoParams, RunPodBackendConfig } from "./types.js";
export declare class RunPodBackend implements ComfyBackend {
    readonly name: "runpod";
    private client;
    constructor(config: RunPodBackendConfig);
    healthCheck(): Promise<{
        healthy: boolean;
        version: any;
        error?: undefined;
    } | {
        healthy: boolean;
        error: string;
        version?: undefined;
    }>;
    portrait(params: PortraitParams): Promise<GenerationResult>;
    tts(params: TTSParams): Promise<GenerationResult>;
    lipsync(params: LipSyncParams): Promise<GenerationResult>;
    imagine(params: ImagineParams): Promise<GenerationResult>;
    imageToVideo(params: ImageToVideoParams): Promise<GenerationResult>;
    /**
     * Process RunPod response files - download if base64, return URLs otherwise
     */
    private processFiles;
}