/** Bounded retention of confirmed sends until the authoritative timeline catches up. */
export declare class ConfirmedSendRetentionOwner<T> {
    private readonly options;
    private readonly entries;
    constructor(options: {
        maxItems: number;
        ttlMillis: number;
        key(item: T): string;
        canRetain(item: T): boolean;
        isAuthoritative(item: T): boolean;
        merge(local: T[], remote: T[]): T[];
    });
    retain(sourceKey: string, item: T, nowMillis?: number): void;
    forget(sourceKey: string, ids: readonly string[]): void;
    clear(): void;
    merge(sourceKey: string, authoritative: T[], nowMillis?: number): T[];
}
//# sourceMappingURL=confirmed-send-retention.d.ts.map