Download files from Amazon

download.js

const chunk = (arr, size) =>
  Array.from({ length: Math.ceil(arr.length / size) }, (v, i) =>
    arr.slice(i * size, i * size + size)
  );

chunk([...document.querySelectorAll(".file-list-node.selectable")], 10).forEach(
  (files, i) => {
    console.log("downloading chunk", i);
    files.forEach(node => node.click());
    document.querySelector("button.download").click();
  }
);