Examine source code of StormAlert

{
  "manifest_version": 2,
  "name": "StormAlert",
  "version": "1.0",
  "description": "Get latest storm updates quickly.",
  "permissions": [
    "https://api.open-meteo.com/*"
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon.png"
    }
  },
  "icons": {
    "48": "icon.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "stormalert@example.com",
      "strict_min_version": "68.0"
    }
  }
}