Examine source code of WebFolder

{
  "manifest_version": 3,
  "name": "__MSG_appName__",
  "version": "0.0.4",
  "description": "__MSG_appDescription__",
  "default_locale": "es",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "chrome_url_overrides": {
    "newtab": "newtab.html"
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "__MSG_headerSaveInWebFolder__",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png",
      "48": "icons/icon-48.png",
      "128": "icons/icon-128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "permissions": [
    "storage",
    "activeTab",
    "tabs",
    "tabGroups",
    "contextMenus"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "webfolder@webfolder.app",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}