import { readerFromStreamReader } from "https://deno.land/std/io/mod.ts";
import { basename, dirname } from "https://deno.land/std/path/mod.ts";

export async function snarf(url: Request | string, init?: RequestInit, fn?: string): Promise<void> {
  var outf= fn ?? basename(typeof url === "string" ? url : url.url)
  res= await fetch(url, init);
  sr= res.body?.getReader();
  if(sr !== null && sr !== void 0) {
    var r=readerFromStreamReader(sr);
    var f=Deno.open(outf, {create:true,write:true})
    await Deno.copy(r,f)
    f.close()
  }
}