Download any files from direct link using Node.js

downloadFile.ts

import fs from "node:fs";
import https from "node:https";
import http from "node:http";

function getFileName(url: string) {
  return new URL(url).pathname.split("/").pop();
}
async function downloadFile(url: string): Promise<string> {
  const urlProtocol = new URL(url).protocol;
  const request = urlProtocol === "https:" ? https : http;
  const fileName = getFileName(url);
  const dir = "tmp";
  const filePath = `${process.cwd()}/${dir}/${fileName}`;
  if (!fs.existsSync(dir)) fs.mkdirSync(dir);
  const file = fs.createWriteStream(filePath);

  return new Promise((resolve) => {
    request.get(url, (res) => {
      res.pipe(file);
      file.on("finish", () => {
        file.close();
        resolve(filePath);
      });
    });
  });
}

export default downloadFile;