import { MessageAttachment } from '@slack/types';
declare enum ERecordLevel {
    trace = 10,
    debug = 20,
    info = 30,
    warn = 40,
    error = 50,
    fatal = 60
}
export default class BunyanSlack<T extends {
    msg: string;
    level: ERecordLevel;
}> {
    webhookUrl: string;
    channel?: string;
    username?: string;
    iconUrl?: string;
    iconEmoji?: string;
    customFormatter: (record: T, levelName: keyof typeof ERecordLevel) => {
        text: string;
    } | {
        attachments: MessageAttachment[];
    };
    onError: (err: unknown) => void;
    constructor(options: Omit<BunyanSlack<T>, 'write' | 'customFormatter' | 'onError'> & {
        customFormatter?: BunyanSlack<T>['customFormatter'];
        onError?: BunyanSlack<T>['onError'];
    });
    write(record: Object): Promise<void>;
}
export {};