Refactoring duplicates code

src/scripts/dom.js

@@ -145,9 +145,15 @@
         windowSize = null;
     }
 
+    /**
+    * @typedef {Object} windowSize
+    * @property {number} innerHeight - window innerHeight.
+    * @property {number} innerWidth - window innerWidth.
+    */
+
     /**
      * Returns window size.
-     * @returns {Object} Window size.
+     * @returns {windowSize} Window size.
      */
     export function getWindowSize() {
         if (!windowSize) {

src/scripts/settings/userSettings.js

@@ -467,11 +467,17 @@ export class UserSettings {
         return this.get('soundeffects', false);
     }
 
+    /**
+    * @typedef {Object} Query
+    * @property {number} StartIndex - query StartIndex.
+    * @property {number} Limit - query Limit.
+    */
+
     /**
      * Load query settings.
      * @param {string} key - Query key.
      * @param {Object} query - Query base.
-     * @return {Object} Query.
+     * @return {Query} Query.
      */
     loadQuerySettings(key, query) {
         let values = this.get(key);