/**
 * Minimal hand-rolled Slack Web API client. The repo norm is hand-rolled
 * `fetch` over a vendor SDK (only Telegram pulls in grammy), so there is NO
 * `@slack/web-api` dependency: each method POSTs JSON to
 * `https://slack.com/api/<method>` with `Authorization: Bearer <token>` and
 * throws on a non-`ok` Slack response.
 */
export interface SlackClientOptions {
    readonly token: string;
    /** Override the API base (tests). */
    readonly baseUrl?: string;
    /** Injectable fetch (tests). Defaults to the global `fetch`. */
    readonly fetchImpl?: typeof fetch;
}
export interface AuthTestResult {
    /** The bot's own user id — used to drop the bot's own messages. */
    readonly botUserId: string;
    readonly teamId?: string;
    readonly team?: string;
    readonly url?: string;
}
export interface PostMessageResult {
    readonly channel: string;
    /** The new message ts — used as the edit target for streaming. */
    readonly ts: string;
}
export declare class SlackClient {
    private readonly token;
    private readonly baseUrl;
    private readonly fetchImpl;
    constructor(opts: SlackClientOptions);
    private call;
    /** Validate the token and capture the bot's own user id. */
    authTest(): Promise<AuthTestResult>;
    /** Post a message into a channel/thread. Returns the channel + new ts. */
    postMessage(args: {
        channel: string;
        text: string;
        threadTs?: string;
    }): Promise<PostMessageResult>;
    /** Edit an existing message (the streaming-update path). */
    updateMessage(args: {
        channel: string;
        ts: string;
        text: string;
    }): Promise<void>;
    /** Optional: read a thread's replies (unused by v1 streaming, exposed for tools). */
    conversationsReplies(args: {
        channel: string;
        ts: string;
    }): Promise<ReadonlyArray<Record<string, unknown>>>;
}
//# sourceMappingURL=slack-client.d.ts.map