import type { AnomalyEvent } from '@manehorizons/cadence-types';
import type { Notifier } from './notifier.js';
/**
 * Appends NDJSON lines (one event per line) to a file. Creates parent
 * directories if needed. Operator owns rotation/truncation.
 */
export declare class FileNotifier implements Notifier {
    private readonly path;
    readonly name = "file";
    constructor(path: string);
    notify(events: AnomalyEvent[]): Promise<void>;
}
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