import { Transport } from './transport.js';
import { LogLevel } from '../logger.js';
interface FetchConfig {
    input: Parameters<typeof fetch>[0];
    init?: Omit<Parameters<typeof fetch>[1], 'body'>;
    autoFlush?: boolean | {
        durationMs: number;
    };
    logLevel?: LogLevel;
}
export declare class SimpleFetchTransport implements Transport {
    private fetchConfig;
    private events;
    private timer;
    constructor(config: FetchConfig);
    log: Transport['log'];
    flush(): Promise<void>;
}
export {};