import { LogEntry } from '../../domain/entities/LogEntry';
import { DeadLetterQueueStats, DLQAddResult, IDeadLetterQueue } from '../../domain/interfaces/IDeadLetterQueue';
export interface FileDLQConfig {
    readonly basePath?: string;
    readonly maxSize?: number;
    readonly maxFileSizeMB?: number;
    readonly maxRetries?: number;
}
export declare class FileDeadLetterQueue implements IDeadLetterQueue {
    private queue;
    private readonly filePath;
    private readonly maxSize;
    private readonly maxFileSizeMB;
    private readonly maxRetries;
    private droppedEntries;
    private writeChain;
    private ready;
    constructor(config?: FileDLQConfig);
    add(entry: LogEntry, reason: string): Promise<DLQAddResult>;
    addBatch(entries: LogEntry[], reason: string): Promise<DLQAddResult>;
    flush(): Promise<number>;
    size(): number;
    clear(): Promise<void>;
    getEntries(limit?: number): Promise<Array<{
        entry: LogEntry;
        reason: string;
        timestamp: number;
    }>>;
    getStats(): DeadLetterQueueStats;
    /**
     * Load entries from disk (for recovery)
     */
    loadFromDisk(): Promise<number>;
    private persistQueueToDisk;
}
//# sourceMappingURL=FileDeadLetterQueue.d.ts.map