Examine source code of Autoscroll Flex

{
  "manifest_version": 3,
  "name": "Autoscroll Flex",
  "version": "0.1.1",
  "browser_specific_settings": {
    "gecko": {
      "id": "autoscroll-flex@example.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "description": "Adjustable autoscroll designed for reading manhwa and manga.",
  "icons": {
    "32": "dist/icons/autoscroll-flex-logo-32.png",
    "64": "dist/icons/autoscroll-flex-logo-64.png",
    "96": "dist/icons/autoscroll-flex-logo-96.png"
  },
  "background": {
    "scripts": [
      "./dist/background.js"
    ],
    "type": "module"
  },
  "action": {
    "default_popup": "./dist/popup.html"
  },
  "options_ui": {
    "page": "./dist/options.html",
    "open_in_tab": true
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>",
        "file:///*"
      ],
      "js": [
        "./dist/content-script.js"
      ]
    }
  ],
  "permissions": [
    "activeTab",
    "storage"
  ]
}