Changed to yarn and removed unnecessary files

public/manifest.json

@@ -18,8 +18,5 @@
       "48": "icon_48.png",
       "128": "icon_128.png"
     }
-  },
-  "background": {
-    "service_worker": "background.js"
   }
 }

src/content.js

@@ -1,2 +0,0 @@
-// This file is injected as a content script
-console.log("Hello from content script!")

webpack.config.js

@@ -5,8 +5,6 @@ const CopyPlugin = require("copy-webpack-plugin");
 const config = {
   entry: {
     popup: path.join(__dirname, "src/popup.jsx"),
-    content: path.join(__dirname, "src/content.js"),
-    background: path.join(__dirname, "src/background.js"),
   },
   output: { path: path.join(__dirname, "dist"), filename: "[name].js" },
   module: {