import type { AnomalyEvent } from '@manehorizons/cadence-types';
import type { Notifier } from './notifier.js';
export interface StderrNotifierOptions {
    /** Test seam: stand in for `process.stderr.write`. */
    write?: (chunk: string) => void;
}
/**
 * Renders one line per event to stderr (or an injected writer) in the form:
 *   `cadence anomaly [severity] type: message`
 */
export declare class StderrNotifier implements Notifier {
    readonly name = "stderr";
    private readonly write;
    constructor(opts?: StderrNotifierOptions);
    notify(events: AnomalyEvent[]): Promise<void>;
}
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