Examine source code of Let it Snow

{
  "manifest_version": 3,
  "name": "Let it Snow",
  "version": "1.0.1",
  "permissions": [
    "storage",
    "scripting",
    "activeTab"
  ],
  "optional_permissions": [],
  "host_permissions": [
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "let-it-snow@zavorateam.ru",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "browsingActivity",
          "websiteContent"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    }
  },
  "icons": {
    "48": "icons/icon48.png",
    "128": "icons/icon128.png",
    "256": "icons/icon256.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  }
}