Examine source code of Gismeteo

{
  "action": {
    "default_icon": {
      "19": "/icons/logo.png"
    },
    "default_popup": "src/pages/popup/index.html",
    "default_title": "Gismeteo"
  },
  "background": {
    "scripts": [
      "src/pages/background/index.js"
    ]
  },
  "default_locale": "en",
  "description": "__MSG_extDescription__",
  "homepage_url": "https://www.gismeteo.ru",
  "host_permissions": [
    "https://services.gismeteo.ru/inform-service/"
  ],
  "icons": {
    "48": "/icons/icon48.png",
    "128": "/icons/icon128.png"
  },
  "manifest_version": 3,
  "name": "Gismeteo",
  "options_page": "src/pages/options/index.html",
  "permissions": [
    "alarms",
    "storage"
  ],
  "version": "4.0.1",
  "browser_specific_settings": {
    "gecko": {
      "id": "gismeteo-unoffical-ff-port@gismeteo.com",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}