axios download progress in nodeJS

nodejs-axios-download-progress.js

const { default: axios } = require("axios");
const fs = require("fs");

const downloadFile = async (url, filename) => {
  const { data, headers, request } = await axios({
    url: url,
    method: "GET",
    responseType: "stream",
  });

  //content length in bytes
  const contentLength = headers["content-length"];

  let name = filename || url.split("/").pop();
  let chunkSize = 0;
  const sizeInMB = (size) => (size / (1024 * 1024)).toFixed(2);
  const percent = (num, den) => Math.floor((num * 100) / den);

  data.on("data", (chunk) => {
    chunkSize += chunk.length;
    console.log(
      `Completed ${sizeInMB(chunkSize)} MB of ${sizeInMB(
        contentLength
      )} MB : ${percent(chunkSize, contentLength)}%`
    );
  });

  data.pipe(fs.createWriteStream(name));

  return new Promise((res) => {
    data.on("end", () => {
      res(data);
    });
  });
};

module.exports = {
  downloadFile,
};