/**
 * Handles serial processing of items with automatic batching
 * Only one processing operation runs at a time, with new items
 * automatically queued for the next batch.
 */
export declare class SerialBatchProcessor<T> {
    private readonly processBatch;
    private queue;
    private processingPromise;
    constructor(processBatch: (items: T[]) => Promise<void>);
    enqueue(item: T): void;
    waitForCompletion(): Promise<void>;
    private startProcessing;
}