import { StringMap } from '@naturalcycles/js-lib';
import { SlackAttachmentField, SlackMessage, SlackServiceCfg } from './slack.service.model';
/**
 * Has 2 main methods:
 *
 * 1. .send({ items: any, channel: ..., ... })
 * Low-level method with all possible options available.
 *
 * 2. .log(...items: any[])
 * Shortcut method to "just log a bunch of things", everything is "by default" there.
 *
 * .send method has a shortcut:
 * .send(string, ctx?: CTX)
 */
export declare class SlackService<CTX = any> {
    constructor(cfg: Partial<SlackServiceCfg<CTX>>);
    cfg: SlackServiceCfg<CTX>;
    /**
     * Allows to "log" many things at once, similar to `console.log(one, two, three).
     */
    log(...items: any[]): Promise<void>;
    send(msg: SlackMessage<CTX> | string, ctx?: CTX): Promise<void>;
    kvToFields(kv: StringMap<any>): SlackAttachmentField[];
}
export declare function slackDefaultMessagePrefixHook(msg: SlackMessage): string[];