OptionalnodeThe optional node to use for the widget.
If a node is provided, the widget will assume full ownership and control of the node, as if it had created the node itself.
The default is a new <div>.
OptionaltagThe optional element tag, used for constructing the widget's node.
If a pre-constructed node is provided via the node arg, this
value is ignored.
General options for the application shell. These are passed on construction and can be modified through dependency injection (
ApplicationShellOptionssymbol).