4 files changed, 8 insertions, 10 deletions
diff --git a/browser/components/newtab/test/unit/lib/AboutPreferences.test.js b/browser/components/newtab/test/unit/lib/AboutPreferences.test.js
index 7438d8247c..20765608fa 100644
--- a/browser/components/newtab/test/unit/lib/AboutPreferences.test.js
+++ b/browser/components/newtab/test/unit/lib/AboutPreferences.test.js
@@ -146,7 +146,7 @@ describe("AboutPreferences Feed", () => {
               },
             },
             createProcessingInstruction: sandbox.stub(),
-            createElementNS: sandbox.stub().callsFake((NS, el) => node),
+            createElementNS: sandbox.stub().callsFake(() => node),
             getElementById: sandbox.stub().returns(node),
             insertBefore: sandbox.stub().returnsArg(0),
             querySelector: sandbox
diff --git a/browser/components/newtab/test/unit/lib/ActivityStream.test.js b/browser/components/newtab/test/unit/lib/ActivityStream.test.js
index c127060021..b9deba1069 100644
--- a/browser/components/newtab/test/unit/lib/ActivityStream.test.js
+++ b/browser/components/newtab/test/unit/lib/ActivityStream.test.js
@@ -417,13 +417,11 @@ describe("ActivityStream", () => {
       clock = sinon.useFakeTimers();
 
       // Have addObserver cause prefHasUserValue to now return true then observe
-      sandbox
-        .stub(global.Services.obs, "addObserver")
-        .callsFake((pref, obs) => {
-          setTimeout(() => {
-            Services.obs.notifyObservers("US", "browser-region-updated");
-          });
+      sandbox.stub(global.Services.obs, "addObserver").callsFake(() => {
+        setTimeout(() => {
+          Services.obs.notifyObservers("US", "browser-region-updated");
         });
+      });
     });
     afterEach(() => clock.restore());
 
diff --git a/browser/components/newtab/test/unit/lib/PersonalityProvider/PersonalityProvider.test.js b/browser/components/newtab/test/unit/lib/PersonalityProvider/PersonalityProvider.test.js
index 0058fd7c76..0feabe978e 100644
--- a/browser/components/newtab/test/unit/lib/PersonalityProvider/PersonalityProvider.test.js
+++ b/browser/components/newtab/test/unit/lib/PersonalityProvider/PersonalityProvider.test.js
@@ -19,7 +19,7 @@ describe("Personality Provider", () => {
     RemoteSettingsOffStub = sandbox.stub().returns();
     RemoteSettingsGetStub = sandbox.stub().returns([]);
 
-    RemoteSettingsStub = name => ({
+    RemoteSettingsStub = () => ({
       get: RemoteSettingsGetStub,
       on: RemoteSettingsOnStub,
       off: RemoteSettingsOffStub,
@@ -142,7 +142,7 @@ describe("Personality Provider", () => {
         },
       ]);
       sinon.spy(instance, "getAttachment");
-      RemoteSettingsStub = name => ({
+      RemoteSettingsStub = () => ({
         get: RemoteSettingsGetStub,
         on: RemoteSettingsOnStub,
         off: RemoteSettingsOffStub,
diff --git a/browser/components/newtab/test/unit/lib/PersonalityProvider/RecipeExecutor.test.js b/browser/components/newtab/test/unit/lib/PersonalityProvider/RecipeExecutor.test.js
index fdbcae9613..bf8ed1fc2b 100644
--- a/browser/components/newtab/test/unit/lib/PersonalityProvider/RecipeExecutor.test.js
+++ b/browser/components/newtab/test/unit/lib/PersonalityProvider/RecipeExecutor.test.js
@@ -6,7 +6,7 @@ class MockTagger {
     this.mode = mode;
     this.tagScoreMap = tagScoreMap;
   }
-  tagTokens(tokens) {
+  tagTokens() {
     if (this.mode === "nb") {
       // eslint-disable-next-line prefer-destructuring
       let tag = Object.keys(this.tagScoreMap)[0];