fix a few small linting issues

js/main.js

@@ -293,9 +293,9 @@ function loadQuestion(n, section = 1, force_reload = false) {
         // otherwise try to load it as a dicom
       } else {
         // convert the data url to a file
-        helper.urltoFile(based_img, "dicom", "application/dicom").then(function (
+        helper
-          dfile
+          .urltoFile(based_img, "dicom", "application/dicom")
-        ) {
+          .then(function (dfile) {
             // load the file using cornerstoneWADO file loader
             const imageId = cornerstoneWADOImageLoader.wadouri.fileManager.add(
               dfile
@@ -348,7 +348,11 @@ function loadQuestion(n, section = 1, force_reload = false) {
         } else if (data_url.startsWith("data:application/dicom")) {
           // stack = stack.split(";")[1];
 
-          const dfile = await helper.urltoFile(data_url, "dicom", "application/dicom");
+          const dfile = await helper.urltoFile(
+            data_url,
+            "dicom",
+            "application/dicom"
+          );
 
           const imageId = cornerstoneWADOImageLoader.wadouri.fileManager.add(
             dfile
@@ -816,7 +820,6 @@ function createQuestionListPanel() {
   });
 }
 
-
 /**
  * Handle key button events
  * These are the same as in the RCR pratique implementation
@@ -1566,7 +1569,6 @@ function loadFlagsFromDb(qid, n) {
     });
 }
 
-
 function showLoginDialog() {
   $("#login-dialog").modal();
 }
@@ -1575,4 +1577,3 @@ $("#start-exam-button").click(function (evt) {
   window.cid = parseInt($("#candidate-number").val());
   $.modal.close();
 });
-

js/viewer.js

@@ -1,3 +1,4 @@
+/* global cornerstone, cornerstoneTools, cornerstoneBase64ImageLoader, cornerstoneWebImageLoader, cornerstoneWADOImageLoader */
 /**
  * Load the main image
  * @param {*} image -