/**
 * @description Downloads a file from a GCP storage bucket.
 * @param params.bucketName The name of the bucket to download the file from.
 * @param params.gsutilURI The Google Cloud Storage URL of the file to download.
 * @param params.downloadName The name of the file once downloaded.
 * @returns {void}
 */
export declare const downloadFile: ({ bucketName, gsutilURI, downloadName, }: {
    bucketName: string;
    gsutilURI: string;
    downloadName: string;
}) => Promise<{
    outputPath: string;
}>;