fix weird bug with ts import

src/Bundle/ChillDocStoreBundle/Resources/public/module/async_upload/downloader.js

@@ -1,4 +1,4 @@
-var mime = require('mime-types');
+var mime = require('mime');
 
 var algo = 'AES-CBC';
 
@@ -28,7 +28,7 @@ var download = (button) => {
         labelPreparing = button.dataset.labelPreparing,
         labelReady = button.dataset.labelReady,
         mimeType = button.dataset.mimeType,
-        extension = mime.extension(mimeType),
+        extension = mime.getExtension(mimeType),
         decryptError = "Error while decrypting file",
         fetchError = "Error while fetching file",
         key, url
@@ -93,4 +93,4 @@ window.addEventListener('load', function(e) {
     initializeButtons(e.target);
 });
 
-export { initializeButtons, download };
+export { initializeButtons, download };