Examine source code of ExportMyMap

{
  "manifest_version": 3,
  "name": "__MSG_extName__",
  "description": "__MSG_extDescription__",
  "default_locale": "en",
  "version": "1.6.5",
  "permissions": [
    "activeTab",
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "https://www.google.com/maps/*",
    "https://maps.google.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "index.html",
        "assets/*",
        "icons/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; worker-src 'self' blob:; object-src 'none'"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "exportmymap@exportmymap.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "locationInfo",
          "websiteContent",
          "personallyIdentifyingInfo",
          "authenticationInfo"
        ],
        "optional": [
          "technicalAndInteraction",
          "personalCommunications"
        ]
      }
    }
  }
}