import { BaseConnector } from '../../base/base.connector';
import type { IChatOptions, IChatProvider, ISendMessageSuccessResponse, WithPassthrough, ChatSendResult, IChatConnector } from '../../types';
import { ChannelTypeEnum } from '../../types';
import type { SlackConfig } from './slack.config';
import type { SlackNarrowedInput } from './slack.types';
/**
 * Webhook-URL-as-auth. No Authorization header; the webhookUrl IS the credential.
 *
 * Slack Incoming Webhooks return plain text `"ok"` on success (HTTP 200) and
 * an error string on failure — non-JSON body parsing throughout. No message_id
 * is returned, so `providerMessageId` is always `null`.
 */
export declare class SlackChatConnector extends BaseConnector implements IChatProvider, IChatConnector {
    private config;
    readonly id: "slack";
    readonly channelType: ChannelTypeEnum.CHAT;
    constructor(config: SlackConfig, fetchImpl?: typeof fetch);
    /**
     * Thinwrap-native send. Implements `IChatConnector`.
     *
     * `to` is intentionally absent from `SlackNarrowedInput` — the webhook URL
     * targets the channel directly. All snake_case wire keys
     * (`icon_emoji`, `icon_url`, `thread_ts`, `unfurl_links`, `unfurl_media`,
     * `link_names`) are written explicitly; no `Casing` helper
     * is invoked.
     */
    send(input: SlackNarrowedInput): Promise<ChatSendResult>;
    /**
     * HTTP-layer mapping. ConnectorError carries no
     * `retryAfterSeconds` field — retry is consumer policy:
     * parsed seconds embedded in `providerMessage` text, raw header preserved on
     * `cause.retryAfter`. Wrapper performs no retry.
     *
     * 401/403/404 all map to `auth_failed` — invalid, revoked, or
     * deleted webhook URLs are all credential failures.
     */
    private mapVendorError;
    sendMessage(options: IChatOptions, bridgeProviderData?: WithPassthrough<Record<string, unknown>>): Promise<ISendMessageSuccessResponse>;
}