/**
 * SlackConnector — polls Slack channels via the Web API.
 * Uses dynamic import for @slack/web-api to keep it optional at module load time.
 */
import type { AuthRequirement, ConnectorConfig, ConnectorHealth, IConnector, NormalizedItem } from '../framework/types.js';
export declare class SlackConnector implements IConnector {
    readonly name = "slack";
    readonly type: "api";
    private config;
    private client;
    private userCache;
    private lastPollTime;
    private lastPollCount;
    private lastError;
    constructor(config: ConnectorConfig);
    init(): Promise<void>;
    dispose(): Promise<void>;
    healthCheck(): Promise<ConnectorHealth>;
    getAuthRequirements(): AuthRequirement[];
    authenticate(): Promise<boolean>;
    private resolveUserName;
    poll(since: Date): Promise<NormalizedItem[]>;
}
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