Examine source code of Trick Focus

{
  "manifest_version": 3,
  "name": "__MSG_appName__",
  "version": "6",
  "default_locale": "en",
  "description": "__MSG_appDescription__",
  "minimum_chrome_version": "111",
  "icons": {
    "16": "icons/icon-inner16.png",
    "48": "icons/icon-inner48.png",
    "128": "icons/icon-inner128.png"
  },
  "permissions": [
    "storage",
    "scripting",
    "activeTab"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{aa2d7c4c-80c6-4bcf-b48e-f39edec8be51}",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "__MSG_appName__",
    "default_icon": {
      "16": "icons/icon-inner16.png",
      "48": "icons/icon-inner48.png",
      "128": "icons/icon-inner128.png"
    }
  }
}