interface InFlightEntry<T> {
    promise: Promise<T>;
    startedAt: number;
}
interface InFlightDeduperOptions {
    timeoutMs: number;
    maxEntries: number;
    cleanupIntervalMs: number;
}
interface InFlightCleanupResult {
    cleanedCount: number;
    remainingCount: number;
}
export declare class InFlightRequestDeduper<T> {
    private readonly options;
    private readonly entries;
    private lastCleanupTime;
    constructor(options: InFlightDeduperOptions);
    get(key: string): InFlightEntry<T> | undefined;
    set(key: string, promise: Promise<T>, startedAt?: number): void;
    delete(key: string): void;
    cleanup(now?: number): InFlightCleanupResult | undefined;
}
export {};
//# sourceMappingURL=in-flight-dedupe.d.ts.map