import type { RuntimeEvent, RuntimeEventPipelineConfig, RuntimeEventPipelineMetrics } from "./types";
/**
 * Resilient runtime event pipeline with bounded memory and retry semantics.
 */
export declare class RuntimeEventPipeline {
    private readonly processor;
    private readonly config;
    private readonly workerCount;
    private readonly maxQueueSize;
    private readonly maxRetries;
    private readonly retryBaseDelayMs;
    private readonly queues;
    private readonly metrics;
    constructor(processor: (event: RuntimeEvent) => Promise<void>, config?: RuntimeEventPipelineConfig);
    enqueue(event: Omit<RuntimeEvent, "attempt">): boolean;
    startAndDrain(): Promise<void>;
    getMetrics(): RuntimeEventPipelineMetrics;
    private runWorker;
    private processWithRetry;
}