slotAssignment property
SlotAssignmentMode
get
slotAssignment
The read-only slotAssignment property of the ShadowRoot interface
returns the slot assignment mode for the shadow DOM tree. Nodes are
either automatically assigned (named) or manually assigned (manual).
The value of this property defined using the slotAssignment option when
calling Element.attachShadow.
Implementation
external SlotAssignmentMode get slotAssignment;