import type { ObservationType } from './types.js';
export interface QueueItem {
    content: string;
    type: ObservationType;
    source: string;
    filePath?: string;
}
export declare class ObserveQueue {
    private queue;
    private dedupMap;
    private onFlush;
    private flushing;
    constructor(onFlush: (items: QueueItem[]) => Promise<void>);
    enqueue(item: QueueItem): Promise<boolean>;
    flush(): Promise<void>;
    get size(): number;
}
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