diff --git a/.eslintrc.js b/.eslintrc.js
index 56ad804b8379..15fce3c2dcaa 100644
--- a/.eslintrc.js
+++ b/.eslintrc.js
@@ -236,7 +236,7 @@ module.exports = {
         "browser/components/enterprisepolicies/**",
         "browser/components/firefoxview/**",
         "browser/components/migration/**",
-        "browser/components/newtab/lib/ASRouterPreferences.jsm",
+        "browser/components/newtab/lib/ASRouterPreferences.sys.mjs",
         "browser/components/protocolhandler/WebProtocolHandlerRegistrar.sys.mjs",
         "browser/components/shell/ShellService.sys.mjs",
         "browser/components/syncedtabs/TabListComponent.sys.mjs",
diff --git a/browser/components/asrouter/modules/ASRouter.jsm b/browser/components/asrouter/modules/ASRouter.jsm
index 352f37744414..bb488c591115 100644
--- a/browser/components/asrouter/modules/ASRouter.jsm
+++ b/browser/components/asrouter/modules/ASRouter.jsm
@@ -13,6 +13,8 @@ const { AppConstants } = ChromeUtils.importESModule(
 const lazy = {};
 
 ChromeUtils.defineESModuleGetters(lazy, {
+  ASRouterPreferences:
+    "resource:///modules/asrouter/ASRouterPreferences.sys.mjs",
   ASRouterTargeting: "resource:///modules/asrouter/ASRouterTargeting.sys.mjs",
   ASRouterTriggerListeners:
     "resource:///modules/asrouter/ASRouterTriggerListeners.sys.mjs",
@@ -30,6 +32,8 @@ ChromeUtils.defineESModuleGetters(lazy, {
   SpecialMessageActions:
     "resource://messaging-system/lib/SpecialMessageActions.sys.mjs",
   TargetingContext: "resource://messaging-system/targeting/Targeting.sys.mjs",
+  TARGETING_PREFERENCES:
+    "resource:///modules/asrouter/ASRouterPreferences.sys.mjs",
   Utils: "resource://services-settings/Utils.sys.mjs",
   setTimeout: "resource://gre/modules/Timer.sys.mjs",
   Spotlight: "resource:///modules/asrouter/Spotlight.sys.mjs",
@@ -38,11 +42,6 @@ ChromeUtils.defineESModuleGetters(lazy, {
   ToolbarPanelHub: "resource:///modules/asrouter/ToolbarPanelHub.sys.mjs",
 });
 
-XPCOMUtils.defineLazyModuleGetters(lazy, {
-  ASRouterPreferences: "resource:///modules/asrouter/ASRouterPreferences.jsm",
-  TARGETING_PREFERENCES: "resource:///modules/asrouter/ASRouterPreferences.jsm",
-});
-
 XPCOMUtils.defineLazyServiceGetters(lazy, {
   BrowserHandler: ["@mozilla.org/browser/clh;1", "nsIBrowserHandler"],
 });
diff --git a/browser/components/asrouter/modules/ASRouterDefaultConfig.sys.mjs b/browser/components/asrouter/modules/ASRouterDefaultConfig.sys.mjs
index 6c4cbbcd6dc8..da66bc054bb0 100644
--- a/browser/components/asrouter/modules/ASRouterDefaultConfig.sys.mjs
+++ b/browser/components/asrouter/modules/ASRouterDefaultConfig.sys.mjs
@@ -20,9 +20,7 @@ const { SpecialMessageActions } = ChromeUtils.importESModule(
   "resource://messaging-system/lib/SpecialMessageActions.sys.mjs"
 );
 
-const { ASRouterPreferences } = ChromeUtils.import(
-  "resource:///modules/asrouter/ASRouterPreferences.jsm"
-);
+import { ASRouterPreferences } from "resource:///modules/asrouter/ASRouterPreferences.sys.mjs";
 import { QueryCache } from "resource:///modules/asrouter/ASRouterTargeting.sys.mjs";
 import { ActivityStreamStorage } from "resource://activity-stream/lib/ActivityStreamStorage.sys.mjs";
 
diff --git a/browser/components/asrouter/modules/ASRouterParentProcessMessageHandler.sys.mjs b/browser/components/asrouter/modules/ASRouterParentProcessMessageHandler.sys.mjs
index c4a9f9d3a328..c2f5fcd884f6 100644
--- a/browser/components/asrouter/modules/ASRouterParentProcessMessageHandler.sys.mjs
+++ b/browser/components/asrouter/modules/ASRouterParentProcessMessageHandler.sys.mjs
@@ -3,10 +3,7 @@
  * 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/. */
 
-const { ASRouterPreferences } = ChromeUtils.import(
-  "resource:///modules/asrouter/ASRouterPreferences.jsm"
-);
-
+import { ASRouterPreferences } from "resource:///modules/asrouter/ASRouterPreferences.sys.mjs";
 import { MESSAGE_TYPE_HASH as msg } from "resource:///modules/asrouter/ActorConstants.sys.mjs";
 
 export class ASRouterParentProcessMessageHandler {
diff --git a/browser/components/asrouter/modules/ASRouterPreferences.jsm b/browser/components/asrouter/modules/ASRouterPreferences.sys.mjs
similarity index 95%
rename from browser/components/asrouter/modules/ASRouterPreferences.jsm
rename to browser/components/asrouter/modules/ASRouterPreferences.sys.mjs
index 3731c607eadd..c7617d80c02c 100644
--- a/browser/components/asrouter/modules/ASRouterPreferences.jsm
+++ b/browser/components/asrouter/modules/ASRouterPreferences.sys.mjs
@@ -1,7 +1,6 @@
 /* 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 PROVIDER_PREF_BRANCH =
   "browser.newtabpage.activity-stream.asrouter.providers.";
@@ -33,9 +32,9 @@ const USER_PREFERENCES = {
 
 // Preferences that influence targeting attributes. When these change we need
 // to re-evaluate if the message targeting still matches
-const TARGETING_PREFERENCES = [FXA_USERNAME_PREF];
+export const TARGETING_PREFERENCES = [FXA_USERNAME_PREF];
 
-const TEST_PROVIDERS = [
+export const TEST_PROVIDERS = [
   {
     id: "panel_local_testing",
     type: "local",
@@ -44,7 +43,7 @@ const TEST_PROVIDERS = [
   },
 ];
 
-class _ASRouterPreferences {
+export class _ASRouterPreferences {
   constructor() {
     Object.assign(this, DEFAULT_STATE);
     this._callbacks = new Set();
@@ -239,11 +238,4 @@ class _ASRouterPreferences {
   }
 }
 
-const ASRouterPreferences = new _ASRouterPreferences();
-
-const EXPORTED_SYMBOLS = [
-  "_ASRouterPreferences",
-  "ASRouterPreferences",
-  "TEST_PROVIDERS",
-  "TARGETING_PREFERENCES",
-];
+export const ASRouterPreferences = new _ASRouterPreferences();
diff --git a/browser/components/asrouter/modules/ASRouterTargeting.sys.mjs b/browser/components/asrouter/modules/ASRouterTargeting.sys.mjs
index 1034285841af..d2951e2a1602 100644
--- a/browser/components/asrouter/modules/ASRouterTargeting.sys.mjs
+++ b/browser/components/asrouter/modules/ASRouterTargeting.sys.mjs
@@ -38,6 +38,8 @@ const lazy = {};
 ChromeUtils.defineESModuleGetters(lazy, {
   AddonManager: "resource://gre/modules/AddonManager.sys.mjs",
   AboutNewTab: "resource:///modules/AboutNewTab.sys.mjs",
+  ASRouterPreferences:
+    "resource:///modules/asrouter/ASRouterPreferences.sys.mjs",
   AttributionCode: "resource:///modules/AttributionCode.sys.mjs",
   BrowserWindowTracker: "resource:///modules/BrowserWindowTracker.sys.mjs",
   ClientEnvironment: "resource://normandy/lib/ClientEnvironment.sys.mjs",
@@ -52,10 +54,6 @@ ChromeUtils.defineESModuleGetters(lazy, {
   WindowsLaunchOnLogin: "resource://gre/modules/WindowsLaunchOnLogin.sys.mjs",
 });
 
-XPCOMUtils.defineLazyModuleGetters(lazy, {
-  ASRouterPreferences: "resource:///modules/asrouter/ASRouterPreferences.jsm",
-});
-
 ChromeUtils.defineLazyGetter(lazy, "fxAccounts", () => {
   return ChromeUtils.importESModule(
     "resource://gre/modules/FxAccounts.sys.mjs"
diff --git a/browser/components/asrouter/moz.build b/browser/components/asrouter/moz.build
index 00b411b7e7e0..5365801a2640 100644
--- a/browser/components/asrouter/moz.build
+++ b/browser/components/asrouter/moz.build
@@ -20,7 +20,7 @@ EXTRA_JS_MODULES.asrouter += [
     "modules/ASRouterDefaultConfig.sys.mjs",
     "modules/ASRouterNewTabHook.sys.mjs",
     "modules/ASRouterParentProcessMessageHandler.sys.mjs",
-    "modules/ASRouterPreferences.jsm",
+    "modules/ASRouterPreferences.sys.mjs",
     "modules/ASRouterTargeting.sys.mjs",
     "modules/ASRouterTriggerListeners.sys.mjs",
     "modules/CFRMessageProvider.sys.mjs",
diff --git a/browser/components/asrouter/tests/unit/ASRouter.test.js b/browser/components/asrouter/tests/unit/ASRouter.test.js
index f23047be4438..abdc6fb88324 100644
--- a/browser/components/asrouter/tests/unit/ASRouter.test.js
+++ b/browser/components/asrouter/tests/unit/ASRouter.test.js
@@ -11,7 +11,7 @@ import {
 import {
   ASRouterPreferences,
   TARGETING_PREFERENCES,
-} from "modules/ASRouterPreferences.jsm";
+} from "modules/ASRouterPreferences.sys.mjs";
 import { ASRouterTriggerListeners } from "modules/ASRouterTriggerListeners.sys.mjs";
 import { CFRPageActions } from "modules/CFRPageActions.sys.mjs";
 import { GlobalOverrider } from "test/unit/utils";
diff --git a/browser/components/asrouter/tests/unit/ASRouterPreferences.test.js b/browser/components/asrouter/tests/unit/ASRouterPreferences.test.js
index e6a45c4d9acd..a3fe1fc5c94e 100644
--- a/browser/components/asrouter/tests/unit/ASRouterPreferences.test.js
+++ b/browser/components/asrouter/tests/unit/ASRouterPreferences.test.js
@@ -2,7 +2,7 @@ import {
   _ASRouterPreferences,
   ASRouterPreferences as ASRouterPreferencesSingleton,
   TEST_PROVIDERS,
-} from "modules/ASRouterPreferences.jsm";
+} from "modules/ASRouterPreferences.sys.mjs";
 const FAKE_PROVIDERS = [{ id: "foo" }, { id: "bar" }];
 
 const PROVIDER_PREF_BRANCH =
diff --git a/browser/components/asrouter/tests/unit/ASRouterTargeting.test.js b/browser/components/asrouter/tests/unit/ASRouterTargeting.test.js
index db0afd4a68a7..610b488b47d4 100644
--- a/browser/components/asrouter/tests/unit/ASRouterTargeting.test.js
+++ b/browser/components/asrouter/tests/unit/ASRouterTargeting.test.js
@@ -5,7 +5,7 @@ import {
   QueryCache,
 } from "modules/ASRouterTargeting.sys.mjs";
 import { OnboardingMessageProvider } from "modules/OnboardingMessageProvider.sys.mjs";
-import { ASRouterPreferences } from "modules/ASRouterPreferences.jsm";
+import { ASRouterPreferences } from "modules/ASRouterPreferences.sys.mjs";
 import { GlobalOverrider } from "test/unit/utils";
 
 // Note that tests for the ASRouterTargeting environment can be found in
diff --git a/browser/components/asrouter/tests/unit/ASRouterTriggerListeners.test.js b/browser/components/asrouter/tests/unit/ASRouterTriggerListeners.test.js
index dbf4a8edb419..aa455e23a293 100644
--- a/browser/components/asrouter/tests/unit/ASRouterTriggerListeners.test.js
+++ b/browser/components/asrouter/tests/unit/ASRouterTriggerListeners.test.js
@@ -1,5 +1,5 @@
 import { ASRouterTriggerListeners } from "modules/ASRouterTriggerListeners.sys.mjs";
-import { ASRouterPreferences } from "modules/ASRouterPreferences.jsm";
+import { ASRouterPreferences } from "modules/ASRouterPreferences.sys.mjs";
 import { GlobalOverrider } from "test/unit/utils";
 
 describe("ASRouterTriggerListeners", () => {