import { LogEntry } from "winston";
import Transport from "winston-transport";
import { Logtail } from "@logtail/node";
export declare class LogtailTransport extends Transport {
    private _logtail;
    private _context;
    constructor(_logtail: Logtail, stackContext?: any);
    setStackContext(_context: any): void;
    log(info: LogEntry, cb: Function): void;
}