Examine source code of TurfBuilder MapClip

{
  "manifest_version": 3,
  "name": "TurfBuilder MapClip",
  "version": "1.0.0",
  "description": "Collect Google Maps places (name, address, lat/lng from plus code) and export as CSV.",
  "content_scripts": [
    {
      "matches": [
        "https://www.google.com/maps/*",
        "https://maps.google.com/*"
      ],
      "js": [
        "olc.js",
        "content.js"
      ],
      "css": [
        "panel.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "turfbuilder@joeldesante",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}