import { EventEmitter } from 'events';
import { NativeTraceFormat } from './schemas/index.js';
export interface TraceFileWatcherOptions {
    traceDir: string;
    fileExtension?: string;
    debounceMs?: number;
    processExisting?: boolean;
    maxFileAgeMs?: number;
    onValidationError?: (file: string, errors: string[]) => void;
}
export interface TraceFileWatcherEvents {
    trace: (trace: NativeTraceFormat, filePath: string) => void;
    error: (error: Error, filePath: string) => void;
    start: (traceDir: string) => void;
    stop: () => void;
    fileDetected: (filePath: string) => void;
}
export declare class TraceFileWatcher extends EventEmitter {
    private readonly logger;
    private watcher;
    private readonly options;
    private processedFiles;
    private pendingFiles;
    private isWatching;
    constructor(options: TraceFileWatcherOptions);
    start(): Promise<void>;
    stop(): void;
    isRunning(): boolean;
    getProcessedFiles(): string[];
    clearProcessedFiles(): void;
    processFile(filePath: string): Promise<NativeTraceFormat | null>;
    private handleFileEvent;
    private processExistingFiles;
    private processTraceFile;
}
export declare function createTraceFileWatcher(options: TraceFileWatcherOptions): TraceFileWatcher;
declare module 'events' {
    interface EventEmitter {
        on<K extends keyof TraceFileWatcherEvents>(event: K, listener: TraceFileWatcherEvents[K]): this;
        emit<K extends keyof TraceFileWatcherEvents>(event: K, ...args: Parameters<TraceFileWatcherEvents[K]>): boolean;
        off<K extends keyof TraceFileWatcherEvents>(event: K, listener: TraceFileWatcherEvents[K]): this;
        once<K extends keyof TraceFileWatcherEvents>(event: K, listener: TraceFileWatcherEvents[K]): this;
    }
}