import { watch } from 'fs';
export type WatchFactory = typeof watch;
export interface PanelWatchServiceOptions {
    stateDir: string;
    configPath?: string;
    onStateChange: (event: string, filename?: string | Buffer | null) => void;
    onConfigChange: () => void;
    watchFactory?: WatchFactory;
    logger: {
        warn: (msg: string) => void;
    };
}
/**
 * Thin wrapper around fs.watch so we can stub or wrap it in tests.
 */
export declare class PanelWatchService {
    private stateWatcher?;
    private configWatcher?;
    private readonly options;
    private readonly watchFactory;
    constructor(options: PanelWatchServiceOptions);
    start(): void;
    stop(): void;
}
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