download is a function to support automatically resuming interrupted downloads
of large files for servers and content that support the Range header, instead of
having to restart the download from the beginning.
- Acceptable status codes returned from fetch requests are 200, 201, and 206.
- If invalid information is received as a response then the readable returned from this function will receive an abort signal.
import { download } from "jsr:@doctor/download";
await Deno.mkdir(".output/", { recursive: true });
const { readable, headers } = await download("https://example.com/");
if (!headers.get("content-type")?.startsWith("text/html")) {
await readable.cancel();
} else {
const filename = headers.get("content-disposition")
?.split("; ")
.find((x) => x.startsWith("filename="))
?.split("=")[1] ?? "index.html";
await readable
.pipeTo((await Deno.create(".output/" + filename)).writable);
console.log("hello");
}