diff --git a/common/content/abbreviations.js b/common/content/abbreviations.js
index 1cd08c87..08294970 100644
--- a/common/content/abbreviations.js
+++ b/common/content/abbreviations.js
@@ -4,7 +4,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 /** @scope modules */
 
diff --git a/common/content/autocommands.js b/common/content/autocommands.js
index 205cf4bf..31c3ad90 100644
--- a/common/content/autocommands.js
+++ b/common/content/autocommands.js
@@ -4,7 +4,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 /** @scope modules */
 
diff --git a/common/content/bookmarks.js b/common/content/bookmarks.js
index d8bc2cd7..ca1bdb00 100644
--- a/common/content/bookmarks.js
+++ b/common/content/bookmarks.js
@@ -4,7 +4,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 // also includes methods for dealing with keywords and search engines
 var Bookmarks = Module("bookmarks", {
diff --git a/common/content/browser.js b/common/content/browser.js
index 1e682e9a..cee3adbc 100644
--- a/common/content/browser.js
+++ b/common/content/browser.js
@@ -4,7 +4,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 /** @scope modules */
 
diff --git a/common/content/commandline.js b/common/content/commandline.js
index f351d939..0e42e41d 100644
--- a/common/content/commandline.js
+++ b/common/content/commandline.js
@@ -4,7 +4,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 /** @scope modules */
 
diff --git a/common/content/dactyl.js b/common/content/dactyl.js
index bd602330..6321fa3b 100644
--- a/common/content/dactyl.js
+++ b/common/content/dactyl.js
@@ -4,7 +4,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 /** @scope modules */
 
diff --git a/common/content/editor.js b/common/content/editor.js
index 9a6c7076..262391ec 100644
--- a/common/content/editor.js
+++ b/common/content/editor.js
@@ -3,7 +3,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 /** @scope modules */
 
diff --git a/common/content/events.js b/common/content/events.js
index ae1f669a..4b1841d9 100644
--- a/common/content/events.js
+++ b/common/content/events.js
@@ -4,7 +4,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 /** @scope modules */
 
diff --git a/common/content/help.js b/common/content/help.js
index 9faf7a2a..0bde1ee4 100644
--- a/common/content/help.js
+++ b/common/content/help.js
@@ -2,7 +2,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 function checkFragment() {
     document.title = document.getElementsByTagNameNS("http://www.w3.org/1999/xhtml", "title")[0].textContent;
diff --git a/common/content/hints.js b/common/content/hints.js
index 7cfa4fd4..004f9071 100644
--- a/common/content/hints.js
+++ b/common/content/hints.js
@@ -4,7 +4,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 /** @scope modules */
 /** @instance hints */
diff --git a/common/content/history.js b/common/content/history.js
index fdaedff1..94985d26 100644
--- a/common/content/history.js
+++ b/common/content/history.js
@@ -4,7 +4,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 var History = Module("history", {
     SORT_DEFAULT: "-date",
diff --git a/common/content/key-processors.js b/common/content/key-processors.js
index 63b27938..e1ba321f 100644
--- a/common/content/key-processors.js
+++ b/common/content/key-processors.js
@@ -2,7 +2,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 /** @scope modules */
 
diff --git a/common/content/mappings.js b/common/content/mappings.js
index 7c40ea4e..149f3fb8 100644
--- a/common/content/mappings.js
+++ b/common/content/mappings.js
@@ -4,7 +4,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 /** @scope modules */
 
diff --git a/common/content/marks.js b/common/content/marks.js
index 4454ce17..e32d0c6f 100644
--- a/common/content/marks.js
+++ b/common/content/marks.js
@@ -4,7 +4,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 /**
  * @scope modules
diff --git a/common/content/modes.js b/common/content/modes.js
index e6a6ccaa..50b2ee5b 100644
--- a/common/content/modes.js
+++ b/common/content/modes.js
@@ -4,7 +4,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 /** @scope modules */
 
diff --git a/common/content/mow.js b/common/content/mow.js
index e9989ef9..770929dd 100644
--- a/common/content/mow.js
+++ b/common/content/mow.js
@@ -4,7 +4,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 var MOW = Module("mow", {
     init: function init() {
diff --git a/common/content/quickmarks.js b/common/content/quickmarks.js
index 23c8f6bd..d2a5627c 100644
--- a/common/content/quickmarks.js
+++ b/common/content/quickmarks.js
@@ -4,7 +4,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 /** @scope modules */
 
diff --git a/common/content/statusline.js b/common/content/statusline.js
index c11fbb8d..8eefc33e 100644
--- a/common/content/statusline.js
+++ b/common/content/statusline.js
@@ -4,7 +4,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 /** @scope modules */
 
diff --git a/common/content/tabs.js b/common/content/tabs.js
index 915fb500..41a8ed61 100644
--- a/common/content/tabs.js
+++ b/common/content/tabs.js
@@ -4,7 +4,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 /** @scope modules */
 
diff --git a/common/modules/addons.jsm b/common/modules/addons.jsm
index 1d20b0c6..c1e4e335 100644
--- a/common/modules/addons.jsm
+++ b/common/modules/addons.jsm
@@ -3,7 +3,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 try {
 
diff --git a/common/modules/base.jsm b/common/modules/base.jsm
index 145c3099..b3a1c9dc 100644
--- a/common/modules/base.jsm
+++ b/common/modules/base.jsm
@@ -2,7 +2,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 var { classes: Cc, interfaces: Ci, results: Cr, utils: Cu } = Components;
 
diff --git a/common/modules/bookmarkcache.jsm b/common/modules/bookmarkcache.jsm
index d48f15dd..55328a1f 100644
--- a/common/modules/bookmarkcache.jsm
+++ b/common/modules/bookmarkcache.jsm
@@ -2,7 +2,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 Components.utils.import("resource://dactyl/bootstrap.jsm");
 defineModule("bookmarkcache", {
diff --git a/common/modules/bootstrap.jsm b/common/modules/bootstrap.jsm
index 006c7933..4343ec21 100644
--- a/common/modules/bootstrap.jsm
+++ b/common/modules/bootstrap.jsm
@@ -2,7 +2,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 try {
 
diff --git a/common/modules/cache.jsm b/common/modules/cache.jsm
index cebd562e..c2408467 100644
--- a/common/modules/cache.jsm
+++ b/common/modules/cache.jsm
@@ -2,7 +2,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 Components.utils.import("resource://dactyl/bootstrap.jsm");
 defineModule("cache", {
diff --git a/common/modules/commands.jsm b/common/modules/commands.jsm
index 008945a0..2fdfe780 100644
--- a/common/modules/commands.jsm
+++ b/common/modules/commands.jsm
@@ -4,7 +4,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 try {
 
diff --git a/common/modules/completion.jsm b/common/modules/completion.jsm
index 5a6488d5..ff9c0917 100644
--- a/common/modules/completion.jsm
+++ b/common/modules/completion.jsm
@@ -4,7 +4,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 Components.utils.import("resource://dactyl/bootstrap.jsm");
 defineModule("completion", {
diff --git a/common/modules/config.jsm b/common/modules/config.jsm
index 930b24e5..c9c1420f 100644
--- a/common/modules/config.jsm
+++ b/common/modules/config.jsm
@@ -4,7 +4,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 let global = this;
 Components.utils.import("resource://dactyl/bootstrap.jsm");
diff --git a/common/modules/contexts.jsm b/common/modules/contexts.jsm
index ed43c3eb..46819365 100644
--- a/common/modules/contexts.jsm
+++ b/common/modules/contexts.jsm
@@ -2,7 +2,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 Components.utils.import("resource://dactyl/bootstrap.jsm");
 defineModule("contexts", {
diff --git a/common/modules/dom.jsm b/common/modules/dom.jsm
index 909bb986..87249eb5 100644
--- a/common/modules/dom.jsm
+++ b/common/modules/dom.jsm
@@ -3,7 +3,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 Components.utils.import("resource://dactyl/bootstrap.jsm");
 defineModule("dom", {
diff --git a/common/modules/downloads.jsm b/common/modules/downloads.jsm
index 2f72662e..e2ece139 100644
--- a/common/modules/downloads.jsm
+++ b/common/modules/downloads.jsm
@@ -2,7 +2,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 Components.utils.import("resource://dactyl/bootstrap.jsm");
 defineModule("downloads", {
diff --git a/common/modules/finder.jsm b/common/modules/finder.jsm
index d4ec5004..26966304 100644
--- a/common/modules/finder.jsm
+++ b/common/modules/finder.jsm
@@ -2,7 +2,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 Components.utils.import("resource://dactyl/bootstrap.jsm");
 defineModule("finder", {
diff --git a/common/modules/help.jsm b/common/modules/help.jsm
index a0cbda4c..d12312bd 100644
--- a/common/modules/help.jsm
+++ b/common/modules/help.jsm
@@ -2,7 +2,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 Components.utils.import("resource://dactyl/bootstrap.jsm");
 defineModule("help", {
diff --git a/common/modules/highlight.jsm b/common/modules/highlight.jsm
index ba935d3e..7d6cfaf0 100644
--- a/common/modules/highlight.jsm
+++ b/common/modules/highlight.jsm
@@ -2,7 +2,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 Components.utils.import("resource://dactyl/bootstrap.jsm");
 defineModule("highlight", {
diff --git a/common/modules/io.jsm b/common/modules/io.jsm
index 10a0897e..5eefcc17 100644
--- a/common/modules/io.jsm
+++ b/common/modules/io.jsm
@@ -5,7 +5,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 try {
 
diff --git a/common/modules/javascript.jsm b/common/modules/javascript.jsm
index e690926a..a4d1ab6b 100644
--- a/common/modules/javascript.jsm
+++ b/common/modules/javascript.jsm
@@ -2,7 +2,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 let { getOwnPropertyNames } = Object;
 
diff --git a/common/modules/main.jsm b/common/modules/main.jsm
index d2a2cf17..2740b66d 100644
--- a/common/modules/main.jsm
+++ b/common/modules/main.jsm
@@ -2,7 +2,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 try {
 
diff --git a/common/modules/messages.jsm b/common/modules/messages.jsm
index a6b22743..bca36699 100644
--- a/common/modules/messages.jsm
+++ b/common/modules/messages.jsm
@@ -2,7 +2,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 try {
 
diff --git a/common/modules/options.jsm b/common/modules/options.jsm
index bcbf32f2..512e304f 100644
--- a/common/modules/options.jsm
+++ b/common/modules/options.jsm
@@ -4,7 +4,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 try {
 
diff --git a/common/modules/overlay.jsm b/common/modules/overlay.jsm
index 1648bee4..0ccf502c 100644
--- a/common/modules/overlay.jsm
+++ b/common/modules/overlay.jsm
@@ -2,7 +2,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 try {
 
diff --git a/common/modules/prefs.jsm b/common/modules/prefs.jsm
index eb7c1873..202fe1d5 100644
--- a/common/modules/prefs.jsm
+++ b/common/modules/prefs.jsm
@@ -4,7 +4,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 try {
 
diff --git a/common/modules/protocol.jsm b/common/modules/protocol.jsm
index 6b938f3e..98d8e3bc 100644
--- a/common/modules/protocol.jsm
+++ b/common/modules/protocol.jsm
@@ -2,7 +2,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 Components.utils.import("resource://dactyl/bootstrap.jsm");
 defineModule("protocol", {
diff --git a/common/modules/sanitizer.jsm b/common/modules/sanitizer.jsm
index 38f70cb7..efc0f2de 100644
--- a/common/modules/sanitizer.jsm
+++ b/common/modules/sanitizer.jsm
@@ -3,7 +3,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 // TODO:
 //   - fix Sanitize autocommand
diff --git a/common/modules/services.jsm b/common/modules/services.jsm
index 97e25646..d47da247 100644
--- a/common/modules/services.jsm
+++ b/common/modules/services.jsm
@@ -2,7 +2,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 try {
 
diff --git a/common/modules/storage.jsm b/common/modules/storage.jsm
index b7e31fe7..664124e8 100644
--- a/common/modules/storage.jsm
+++ b/common/modules/storage.jsm
@@ -2,7 +2,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 Components.utils.import("resource://dactyl/bootstrap.jsm");
 defineModule("storage", {
diff --git a/common/modules/styles.jsm b/common/modules/styles.jsm
index 1f517aaf..9ee7f628 100644
--- a/common/modules/styles.jsm
+++ b/common/modules/styles.jsm
@@ -2,7 +2,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 Components.utils.import("resource://dactyl/bootstrap.jsm");
 defineModule("styles", {
diff --git a/common/modules/template.jsm b/common/modules/template.jsm
index 8e5aca0b..61c64cde 100644
--- a/common/modules/template.jsm
+++ b/common/modules/template.jsm
@@ -2,7 +2,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 let global = this;
 Components.utils.import("resource://dactyl/bootstrap.jsm");
diff --git a/common/modules/util.jsm b/common/modules/util.jsm
index d01f97f0..9cc4a49e 100644
--- a/common/modules/util.jsm
+++ b/common/modules/util.jsm
@@ -4,7 +4,7 @@
 //
 // This work is licensed for reuse under an MIT license. Details are
 // given in the LICENSE.txt file included with this file.
-"use strict";
+/* use strict */
 
 try {