diff --git a/packages/react-devtools-extensions/src/injectGlobalHook.js b/packages/react-devtools-extensions/src/injectGlobalHook.js
index 390084ead20da..ca4acfcbd50c4 100644
--- a/packages/react-devtools-extensions/src/injectGlobalHook.js
+++ b/packages/react-devtools-extensions/src/injectGlobalHook.js
@@ -32,14 +32,17 @@ window.addEventListener('message', function(evt) {
       };
       chrome.runtime.sendMessage(lastDetectionResult);
 
-    // Inject the backend. This is done in the content script to avoid CSP
-    // and Trusted Types violations, since content scripts can modify the DOM
-    // and are not subject to the page's policies
+      // Inject the backend. This is done in the content script to avoid CSP
+      // and Trusted Types violations, since content scripts can modify the DOM
+      // and are not subject to the page's policies.
     } else if (evt.data.source === 'react-devtools-inject-backend') {
       // the prototype stuff is in case document.createElement has been modified
-      var script = document.constructor.prototype.createElement.call(document, 'script');
+      const script = document.constructor.prototype.createElement.call(
+        document,
+        'script',
+      );
       script.src = chrome.runtime.getURL('build/backend.js');
-      script.charset = "utf-8";
+      script.charset = 'utf-8';
       document.documentElement.appendChild(script);
       script.parentNode.removeChild(script);
     }
diff --git a/packages/react-devtools-extensions/src/main.js b/packages/react-devtools-extensions/src/main.js
index 7649d099f73c5..fd81dc711d850 100644
--- a/packages/react-devtools-extensions/src/main.js
+++ b/packages/react-devtools-extensions/src/main.js
@@ -4,7 +4,6 @@ import {createElement} from 'react';
 import {unstable_createRoot as createRoot, flushSync} from 'react-dom';
 import Bridge from 'react-devtools-shared/src/bridge';
 import Store from 'react-devtools-shared/src/devtools/store';
-import inject from './inject';
 import {
   createViewElementSource,
   getBrowserName,
@@ -136,12 +135,12 @@ function createPanelIfReactLoaded() {
         // Initialize the backend only once the Store has been initialized.
         // Otherwise the Store may miss important initial tree op codes.
         chrome.devtools.inspectedWindow.eval(
-          `window.postMessage({ source: 'react-devtools-inject-backend' });`, 
-          function(response, error) {
-            if (error) {
-              console.log(error);
+          `window.postMessage({ source: 'react-devtools-inject-backend' });`,
+          function(response, evalError) {
+            if (evalError) {
+              console.log(evalError);
             }
-          }
+          },
         );
 
         const viewElementSourceFunction = createViewElementSource(