Examine source code of Twitter Viewing Assistant

{
  "version": "16.4.4",
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "type": "module"
  },
  "browser_action": {
    "default_icon": {
      "64": "img/logo_64.png"
    },
    "default_popup": "html/popup.html"
  },
  "content_scripts": [
    {
      "js": [
        "js/contents.js"
      ],
      "css": [
        "css/style.css"
      ],
      "matches": [
        "*://x.com/*",
        "*://www.x.com/*",
        "*://twitter.com/*",
        "*://www.twitter.com/*"
      ]
    }
  ],
  "icons": {
    "64": "img/logo_64.png"
  },
  "options_ui": {
    "page": "html/setting.html",
    "open_in_tab": true
  },
  "permissions": [
    "storage",
    "tabs",
    "contextMenus"
  ],
  "web_accessible_resources": [
    "js/*",
    "css/*",
    "font/micon/resource/style.css",
    "font/micon/resource/fonts/*",
    "img/*",
    "html/*",
    "_locales/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      },
      "id": "{3d67382d-925e-4fc2-a9a9-9891fde0af08}"
    }
  },
  "default_locale": "en",
  "name": "__MSG_extensionName__",
  "description": "__MSG_extensionDescription__",
  "manifest_version": 2
}