export interface DeduplicatorOptions {
    windowMs?: number;
    enabled?: boolean;
}
export declare class QueryDeduplicator {
    private readonly inflight;
    private readonly windowMs;
    private readonly enabled;
    constructor(options?: DeduplicatorOptions);
    deduplicate<T>(key: string, fn: () => Promise<T>): Promise<T>;
    getInflightCount(): number;
    getInflightKeys(): string[];
    clear(): void;
    getStats(): {
        enabled: boolean;
        inflight: number;
        windowMs: number;
    };
}
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