Examine source code of Servas

{
  "manifest_version": 3,
  "name": "Servas",
  "version": "0.2.0",
  "description": "Extension for the bookmark manager Servas.",
  "action": {
    "default_popup": "dist/views/popup.html",
    "default_icon": {
      "16": "assets/logo/icon_16.png",
      "32": "assets/logo/icon_32.png"
    }
  },
  "options_ui": {
    "page": "dist/views/settings.html",
    "open_in_tab": true
  },
  "permissions": [
    "activeTab",
    "storage"
  ],
  "host_permissions": [
    "*://*/*"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self';"
  },
  "icons": {
    "16": "assets/logo/icon_16.png",
    "32": "assets/logo/icon_32.png",
    "48": "assets/logo/icon_48.png",
    "128": "assets/logo/icon_128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{a9a4247e-af91-400f-8b53-ef4876b9a555}"
    }
  }
}