Examine source code of Vantavue - Live Weather & Forecast

{
  "manifest_version": 3,
  "name": "Vantavue",
  "description": "Weather at a glance. Multiple cities, 5-day forecast, air quality, city local time. Requires a free OpenWeatherMap API key.",
  "version": "3.0.0",
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_title": "Vantavue",
    "default_popup": "popup/index.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "background": {
    "service_worker": "background.js",
    "type": "module",
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "storage",
    "alarms",
    "contextMenus"
  ],
  "commands": {
    "_execute_action": {
      "suggested_key": {
        "default": "Alt+W",
        "mac": "Alt+W"
      },
      "description": "Open Vantavue"
    }
  },
  "host_permissions": [
    "https://api.openweathermap.org/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{5eecdfd5-ff24-4312-9c3d-653f4ffe8e4d}",
      "strict_min_version": "117.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}