Examine source code of GeoDuels Enhancer

{
  "manifest_version": 3,
  "name": "GeoDuels Enhancer",
  "version": "0.1.3",
  "description": "Official GeoDuels extension that enhances Street View with hidden street names, new modes, a compass, and more.",
  "content_scripts": [
    {
      "matches": [
        "https://geoduels.io/*",
        "https://*.geoduels.io/*"
      ],
      "js": [
        "src/geoduels-page.js"
      ],
      "run_at": "document_start"
    },
    {
      "matches": [
        "https://www.google.com/maps/embed/*",
        "https://*.google.com/maps/embed/*"
      ],
      "js": [
        "src/google-street-view.js"
      ],
      "all_frames": true,
      "run_at": "document_start",
      "world": "MAIN"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "enhancer@geoduels.io",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      },
      "strict_min_version": "140.0"
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}