Companion

The set of all size classes. It's supposed to be expanded whenever a new size class is defined. By default WindowSizeClass.calculateFromSize will only return size classes in DefaultSizeClasses in order to avoid behavioral changes when new size classes are added. You can opt in to support all available size classes by doing:

The default set of size classes that includes Compact, Medium, and Expanded size classes. Should never expand to ensure behavioral consistency.