type constant
TargetKind
const type
Indicates that an annotation is valid on any declaration that introduces a type. This includes classes, enums, mixins, and typedefs, but does not include extensions because extensions don't introduce a type.
Implementation
// TODO(srawlins): This should include extension types.
static const type =
TargetKind._('types (classes, enums, mixins, or typedefs)', 'type');