Examine source code of Universal Things

{
  "manifest_version": 3,
  "name": "Universal Things",
  "version": "1.41",
  "browser_specific_settings": {
    "gecko": {
      "id": "universal-things@bryan",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://*.discord.com/*",
    "https://*.bloxflip.com/*"
  ],
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.bloxflip.com/*"
      ],
      "css": [
        "css/styles.css"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "css/*.css",
        "modules/*.js",
        "modules/themes/*.js",
        "css/themes/*.css"
      ],
      "matches": [
        "https://*.bloxflip.com/*"
      ]
    }
  ]
}