Remove extra eslintrc and fix style

.eslintrc.js

@@ -2,22 +2,32 @@
 
 module.exports = {
   "env": {
-    "es2022": true,
-    "webextensions": true
+    es2022: true,
+    webextensions: true
+  },
+  "globals": {
+    messenger: true
   },
   "root": true,
   "plugins": ["mozilla"],
-  "extends": ["plugin:mozilla/recommended"], 
+  "extends": ["plugin:mozilla/recommended"],
 
-  rules: {
+  "rules": {
     // experiment files are not ES modules, so we can't use static import
     "mozilla/use-static-import": "off",
 
     // We are still experimenting, console messages are ok for now
-    "no-console": "off"
+    "no-console": "off",
+
+    // Some other rules that don't seem to be in the recommended set
+    "no-trailing-spaces": "error",
+    "eol-last": "error",
+    "quote-props": ["error", "consistent-as-needed", { keywords: true }],
+    "quotes": ["error", "double", { avoidEscape: true }],
+    "padded-blocks": ["error", "never"],
   },
 
-   overrides: [
+  "overrides": [
     {
       files: [".eslintrc.js"],
       env: {
@@ -26,10 +36,13 @@ module.exports = {
       },
     },
     {
-      files: ["*/experiments/*/parent/*.js"],
+      files: ["*/experiments/*/parent/*.js", "*/experiments/*/child/*.js"],
       globals: {
         global: true,
         Services: true,
+      },
+      rules: {
+        "no-unused-vars": ["error", { argsIgnorePattern: "^_|context" }]
       }
     }
   ]

NotificationBox/background.js

@@ -6,9 +6,8 @@ messenger.NotificationBox.onButtonClicked.addListener((windowId, notificationId,
   if (["btn-keep"].includes(buttonId)) {
     console.log("Box will not close, as long as one listener returns {close:false}.");
     return { close: false };
-  } 
+  }
     return { close: true };
-
 });
 
 // Defining another onButtonClicked listener

NotificationBox/experiments/NotificationBox/parent/ext-notification-box.js

@@ -1,7 +1,7 @@
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
- 
+
 /* global ExtensionCommon, Services */
 
 // Tested in Thunderbird 128. Does not work for older versions of Thunderbird.