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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
import { fromFileUrl } from "../path/mod.ts";import { ensureFile } from "../fs/ensure_file.ts";
/** Download the file at the given url to the given path.  */export async function downloadFile(url: string, fileUrl: URL) {  const response = await fetch(url);  if (!response.ok) {    throw new Error(`Request failed with status ${response.status}`);  } else if (!response.body) {    throw new Error(      `The requested download url ${url} doesn't contain an archive to download`,    );  } else if (response.status === 404) {    throw new Error(      `The requested url "${url}" could not be found`,    );  }
  await ensureFile(fromFileUrl(fileUrl));  const file = await Deno.open(fileUrl, { truncate: true, write: true });  await response.body.pipeTo(file.writable);}