import { IFetcher } from '../interface';
import { ResolvedRetryOptions } from './RetryOptions';
export declare class RetryingFetcher implements IFetcher<string, string> {
    private readonly inner;
    private readonly options;
    readonly apiKey: string;
    constructor(inner: IFetcher<string, string>, options: ResolvedRetryOptions);
    doFetch(query: string): Promise<string>;
    private classify;
    private exhaustionError;
    private computeDelay;
    delay(ms: number): Promise<void>;
}