/**
 * Slack client implementation.
 *
 * Extends RestApiClientBase to inherit shared request infrastructure,
 * then provides a Slack-specific apiRequest() that returns a
 * SlackResponse<T> discriminated union instead of throwing on ok:false.
 */
import type { z } from "zod";
import { RestApiClientBase } from "../base/rest-api-client-base.js";
import type { ApiRequestOptions } from "../base/types.js";
import type { TraceMetadata } from "../registry.js";
import { type SlackApiRequestSchema, type SlackClient, type SlackResponse } from "./types.js";
/**
 * Internal implementation of SlackClient.
 *
 * Extends RestApiClientBase for request building and execution.
 * Uses {@link SlackErrorSchema} to parse Slack error responses via Zod,
 * then falls back to the caller's schema for success responses.
 */
export declare class SlackClientImpl extends RestApiClientBase implements SlackClient {
    apiRequest<TBody, TResponseSchema extends z.AnyZodObject>(options: ApiRequestOptions<TBody>, schema: SlackApiRequestSchema<TBody, TResponseSchema>, metadata?: TraceMetadata): Promise<SlackResponse<z.output<TResponseSchema>>>;
}
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