/**
 * Slack Adapter — Uses @slack/bolt for Socket Mode communication.
 *
 * Auth: SLACK_BOT_TOKEN (xoxb-) + SLACK_APP_TOKEN (xapp-) for Socket Mode
 * No public URL needed — Socket Mode handles everything.
 */
import { MessageBuffer } from '../buffer.js';
import type { ChannelAdapter, ChannelInfo, ChannelMessage, ChannelState, HistoryOptions, Platform, SendOptions, SendResult } from '../adapter.js';
export declare class SlackAdapter implements ChannelAdapter {
    readonly platform: Platform;
    state: ChannelState;
    readonly buffer: MessageBuffer;
    private app;
    private botToken;
    constructor(botToken: string, appToken: string, bufferSize?: number);
    connect(): Promise<void>;
    disconnect(): Promise<void>;
    send(options: SendOptions): Promise<SendResult>;
    getHistory(options: HistoryOptions): Promise<ChannelMessage[]>;
    listChannels(): Promise<ChannelInfo[]>;
    isHealthy(): Promise<boolean>;
}
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