- Linting: Use new preference for "object"; fix @example code; bad @returns

- npm: Update devDeps

editor/extensions/ext-markers.js

@@ -147,7 +147,7 @@ export default {
     /**
     * @param {string} id
     * @param {""|"\\nomarker"|"nomarker"|"leftarrow"|"rightarrow"|"textmarker"|"forwardslash"|"reverseslash"|"verticalslash"|"box"|"star"|"xmark"|"triangle"|"mcircle"} val
-    * @returns {void}
+    * @returns {SVGMarkerElement}
     */
     function addMarker (id, val) {
       const txtBoxBg = '#ffffff';
@@ -443,7 +443,7 @@ export default {
 
     /**
     * @param {"nomarker"|"leftarrow"|"rightarrow"|"textmarker"|"forwardslash"|"reverseslash"|"verticalslash"|"box"|"star"|"xmark"|"triangle"|"mcircle"} id
-    * @returns {void}
+    * @returns {string}
     */
     function getTitle (id) {
       const {langList} = strings;

editor/extensions/ext-placemark.js

@@ -118,7 +118,7 @@ export default {
     /**
     * @param {string} id
     * @param {""|"\\nomarker"|"nomarker"|"leftarrow"|"rightarrow"|"textmarker"|"textmarker_top"|"textmarker_bottom"|"forwardslash"|"reverseslash"|"verticalslash"|"box"|"star"|"xmark"|"triangle"|"mcircle"} val
-    * @returns {void}
+    * @returns {SVGMarkerElement}
     */
     function addMarker (id, val) {
       let marker = svgCanvas.getElem(id);
@@ -251,7 +251,7 @@ export default {
 
     /**
     * @param {"nomarker"|"leftarrow"|"rightarrow"|"textmarker"|"forwardslash"|"reverseslash"|"verticalslash"|"box"|"star"|"xmark"|"triangle"|"mcircle"} id
-    * @returns {void}
+    * @returns {string}
     */
     function getTitle (id) {
       const {langList} = strings;

editor/extensions/ext-server_opensave.js

@@ -226,7 +226,7 @@ export default {
       /**
        * Submit the form, empty its contents for reuse and show
        *   uploading message.
-       * @returns {void}
+       * @returns {Promise<void>}
        */
       async function submit () {
         // This submits the form, which returns the file data using `svgEditor.processFile()`

editor/extensions/imagelib/openclipart.js

@@ -11,7 +11,7 @@ const jsVoid = 'javascript: void(0);'; // eslint-disable-line no-script-url
 /**
  * Shows results after query submission.
  * @param {string} url
- * @returns {void}
+ * @returns {Promise<void>}
  */
 async function processResults (url) {
   /**