/**
 * Map a Slack event → ShuttleMessage. The agent is a bot MEMBER of the
 * workspace: `app_mention` = @mentioned in a channel; `message` with
 * channel_type `im` = a DM. Bot echoes / edits / joins are ignored.
 */
import type { ShuttleMessage } from '../adapter.js';
export interface SlackEvent {
    readonly type?: string;
    readonly subtype?: string;
    readonly bot_id?: string;
    readonly user?: string;
    readonly text?: string;
    readonly channel?: string;
    readonly channel_type?: string;
    readonly thread_ts?: string;
}
export declare function toShuttleMessage(event: SlackEvent, botUserId?: string): ShuttleMessage | null;
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