import type { ReplicationMetricsData, SyncStats } from './types.js';
import type { Logger } from 'pino';
import { EventEmitter } from 'events';
export declare class ReplicationMetrics extends EventEmitter {
    private readonly logger;
    private readonly metrics;
    private readonly syncHistory;
    private readonly maxHistorySize;
    constructor(logger: Logger);
    recordOperation(data: ReplicationMetricsData): void;
    recordSyncCompletion(stats: SyncStats): void;
    getReplicaMetrics(replicaId: string): {
        totalOperations: number;
        successfulOperations: number;
        failedOperations: number;
        averageDuration: number;
        operationsByType: Record<string, number>;
        recentErrors: Array<{
            timestamp: number;
            error: string;
        }>;
    };
    getSyncStatistics(): {
        totalSyncs: number;
        successfulSyncs: number;
        failedSyncs: number;
        averageDuration: number;
        averageSyncedSessions: number;
        recentSyncs: SyncStats[];
    };
    clearReplicaMetrics(replicaId: string): void;
    clearAllMetrics(): void;
    exportMetrics(): {
        replicas: Record<string, ReturnType<ReplicationMetrics['getReplicaMetrics']>>;
        sync: ReturnType<ReplicationMetrics['getSyncStatistics']>;
    };
}
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