Examine source code of My Weather Forecast

{
  "manifest_version": 3,
  "name": "My Weather",
  "version": "1.0.0",
  "description": "A simple and private weather extension for checking current weather and a 5-day forecast.",
  "browser_specific_settings": {
    "gecko": {
      "id": "my-weather@example.com",
      "data_collection_permissions": {
        "required": [
          "locationInfo"
        ]
      }
    }
  },
  "host_permissions": [
    "https://api.open-meteo.com/*",
    "https://geocoding-api.open-meteo.com/*"
  ],
  "action": {
    "default_title": "My Weather",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}