/**
 * Slack Notifier (v1.1.0)
 *
 * Sends rich notifications to Slack channels via Incoming Webhooks.
 * Uses Slack Block Kit for beautiful formatting.
 */
import type { Notifier, DuplicateAlert, ImpactAlert, WeeklyDigest } from './types.js';
export interface SlackConfig {
    /** Slack Incoming Webhook URL */
    webhookUrl: string;
    /** Channel override (optional, webhook default used otherwise) */
    channel?: string;
    /** Bot display name */
    username?: string;
    /** Bot icon emoji */
    iconEmoji?: string;
}
export declare class SlackNotifier implements Notifier {
    private config;
    constructor(config: SlackConfig);
    notifyDuplicate(alert: DuplicateAlert): Promise<void>;
    notifyImpact(alert: ImpactAlert): Promise<void>;
    notifyRuleViolation(alert: import('./types.js').RuleViolationAlert): Promise<void>;
    sendWeeklyDigest(digest: WeeklyDigest): Promise<void>;
    testConnection(): Promise<boolean>;
    private send;
}
//# sourceMappingURL=slack.d.ts.map