Examine source code of JCOM TV Guide Custom

{
  "version": "16.4.3",
  "content_scripts": [
    {
      "js": [
        "js/contents.js"
      ],
      "matches": [
        "https://tvguide.myjcom.jp/*"
      ]
    }
  ],
  "icons": {
    "128": "img/main-logo_128.png"
  },
  "web_accessible_resources": [
    "js/*",
    "css/*",
    "img/*",
    "html/*",
    "_locales/*"
  ],
  "permissions": [
    "storage"
  ],
  "options_page": "html/setting.html",
  "default_locale": "en",
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "manifest_version": 2,
  "browser_specific_settings": {
    "gecko": {
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      },
      "id": "{47624540-86ce-438e-8020-f7f4be41cc03}"
    }
  }
}