export interface PipelineAnalyticsInfo {
    /** 'compress' | 'progressive' | 'compress+progressive' */
    mode: string;
    usecase?: string;
    filesProcessed: number;
    sizeBefore_MB: number;
    sizeAfter_MB: number;
    gpuMemory_MB: number;
    duration_ms: number;
    extensionsUsed?: string[];
}
/** Send a "pipeline_start" event. */
export declare function trackPipelineStart(info: {
    mode: string;
    usecase?: string;
}): void;
/** Send a pipeline error event. Deduplicates identical errors within 1 minute. */
export declare function trackError(error: unknown, context?: {
    mode?: string;
    usecase?: string;
    file?: string;
}): void;
/** Send a "pipeline_end" event with size reduction and extension info. */
export declare function trackPipelineEnd(info: PipelineAnalyticsInfo): void;