declare module "@11ty/eleventy-fetch" {

  type FetchType =
      | "json"
      | "buffer"
      | "text";

  type EleventyFetchOptionsBase<TType extends FetchType> = {
      type: TType;
      directory?: string;
      concurrency?: number;
      fetchOptions?: RequestInit;
      dryRun?: boolean;
      removeUrlQueryParams?: boolean;
      verbose?: boolean;
      hashLength?: number;
      duration?: string;
      formatUrlForDisplay?: (url: string) => string;
  }

  type EleventyFetch = <TReturn, TType extends FetchType = "json">(url: string, options: EleventyFetchOptionsBase<TType>) =>
      Promise<
          TType extends "json" ? TReturn :
          TType extends "buffer" ? Buffer :
          TType extends "text" ? string :
          never
      >;

  const fetch: EleventyFetch;
  export default fetch;
}