--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -48,17 +48,16 @@ module.exports = {
     ],
     "rules": {
       "mozilla/use-services": "off",
     }
   }, {
     // XXX Bug 1434446. These directories have jsm files still being fixed, so
     // turn off global no-unused-vars checking for them.
     "files": [
-      "accessible/**/*.jsm",
       "browser/components/**/*.jsm",
       "browser/extensions/**/*.jsm",
       "services/sync/**/*.jsm",
       "toolkit/**/*.jsm",
     ],
     "rules": {
       "mozilla/mark-exported-symbols-as-used": "error",
       "no-unused-vars": ["error", {

--- a/accessible/jsat/AccessFu.jsm
+++ b/accessible/jsat/AccessFu.jsm
@@ -1,34 +1,32 @@
 /* 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/. */
 
-/* exported AccessFu */
-
 "use strict";
 
-this.EXPORTED_SYMBOLS = ["AccessFu"]; // jshint ignore:line
+this.EXPORTED_SYMBOLS = ["AccessFu"];
 
 ChromeUtils.import("resource://gre/modules/Services.jsm");
 ChromeUtils.import("resource://gre/modules/accessibility/Utils.jsm");
 
 if (Utils.MozBuildApp === "mobile/android") {
   ChromeUtils.import("resource://gre/modules/Messaging.jsm");
 }
 
-const ACCESSFU_DISABLE = 0; // jshint ignore:line
+// const ACCESSFU_DISABLE = 0;
 const ACCESSFU_ENABLE = 1;
 const ACCESSFU_AUTO = 2;
 
 const SCREENREADER_SETTING = "accessibility.screenreader";
 const QUICKNAV_MODES_PREF = "accessibility.accessfu.quicknav_modes";
 const QUICKNAV_INDEX_PREF = "accessibility.accessfu.quicknav_index";
 
-this.AccessFu = { // jshint ignore:line
+this.AccessFu = {
   /**
    * Initialize chrome-layer accessibility functionality.
    * If accessibility is enabled on the platform, then a special accessibility
    * mode is started.
    */
   attach: function attach(aWindow) {
     Utils.init(aWindow);
 

--- a/accessible/jsat/EventManager.jsm
+++ b/accessible/jsat/EventManager.jsm
@@ -1,16 +1,14 @@
 /* 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/. */
 
 "use strict";
 
-const TEXT_NODE = 3;
-
 ChromeUtils.import("resource://gre/modules/XPCOMUtils.jsm");
 ChromeUtils.defineModuleGetter(this, "Services",
   "resource://gre/modules/Services.jsm");
 ChromeUtils.defineModuleGetter(this, "Utils",
   "resource://gre/modules/accessibility/Utils.jsm");
 ChromeUtils.defineModuleGetter(this, "Logger",
   "resource://gre/modules/accessibility/Utils.jsm");
 ChromeUtils.defineModuleGetter(this, "Presentation",