Add progress to packet loading (and download links)

js/helpers.js

@@ -3,7 +3,9 @@
  * @param {array} array
  */
 export function shuffleArray(array) {
-  var currentIndex = array.length, temporaryValue, randomIndex;
+  var currentIndex = array.length,
+    temporaryValue,
+    randomIndex;
   // While there remain elements to shuffle...
   while (0 !== currentIndex) {
     // Pick a remaining element...
@@ -26,3 +28,15 @@ export function urltoFile(url, filename, mimeType) {
       return new File([buf], filename, { type: mimeType });
     });
 }
+
+export function formatBytes(bytes, decimals = 2) {
+  if (bytes === 0) return "0 Bytes";
+
+  const k = 1024;
+  const dm = decimals < 0 ? 0 : decimals;
+  const sizes = ["Bytes", "KB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"];
+
+  const i = Math.floor(Math.log(bytes) / Math.log(k));
+
+  return parseFloat((bytes / Math.pow(k, i)).toFixed(dm)) + " " + sizes[i];
+}