Bug 1861865 - Fix ESLint valid-jsdoc issues in syncedtabs code. r=markh

Differential Revision: https://phabricator.services.mozilla.com/D192159

Author: Standard8

.eslintrc.js

@@ -246,7 +246,6 @@ module.exports = {
         "browser/components/screenshots/**",
         "browser/components/sessionstore/**",
         "browser/components/storybook/.storybook/**",
-        "browser/components/syncedtabs/**",
         "browser/components/tests/browser/**",
         "browser/components/textrecognition/textrecognition.mjs",
         "browser/components/touchbar/tests/browser/browser_touchbar_searchrestrictions.js",

browser/components/syncedtabs/SyncedTabsDeckStore.sys.mjs

@@ -28,7 +28,8 @@ Object.assign(SyncedTabsDeckStore.prototype, EventEmitter.prototype, {
 
   /**
    * Sets the selected panelId and triggers a change event.
-   * @param {String} panelId - ID of the panel to select.
+   *
+   * @param {string} panelId - ID of the panel to select.
    */
   selectPanel(panelId) {
     if (!this._panels.includes(panelId) || this._selectedPanel === panelId) {
@@ -40,6 +41,7 @@ Object.assign(SyncedTabsDeckStore.prototype, EventEmitter.prototype, {
 
   /**
    * Update the set of panels in the deck and trigger a change event.
+   *
    * @param {Array} panels - an array of IDs for each panel in the deck.
    */
   setPanels(panels) {

browser/components/syncedtabs/TabListView.sys.mjs

@@ -215,6 +215,7 @@ TabListView.prototype = {
   /**
    * Update the element representing an item, ensuring it's in sync with the
    * underlying data.
+   *
    * @param {client} item - Item to use as a source.
    * @param {Element} itemNode - Element to update.
    */
@@ -242,6 +243,7 @@ TabListView.prototype = {
   /**
    * Update the element representing a tab, ensuring it's in sync with the
    * underlying data.
+   *
    * @param {tab} item - Item to use as a source.
    * @param {Element} itemNode - Element to update.
    */
@@ -308,6 +310,7 @@ TabListView.prototype = {
 
   /**
    * Handle a keydown event on the list box.
+   *
    * @param {Event} event - Triggering event.
    */
   onKeyDown(event) {
@@ -585,8 +588,9 @@ TabListView.prototype = {
 
   /**
    * Find the parent item element, from a given child element.
+   *
    * @param {Element} node - Child element.
-   * @return {Element} Element for the item, or null if not found.
+   * @returns {Element} Element for the item, or null if not found.
    */
   _findParentItemNode(node) {
     while (