@umbraco-ui/uui-base/lib/mixins/index.d.ts

This is a base dependency for Umbraco UI components. It contains mixins, animations, abstract base classes, UUIEvent base class, and universal types for properties shared by different components

export * from './ActiveMixin';
export * from './LabelMixin';
export * from './SelectableMixin';
export * from './SelectOnlyMixin';
export * from './FormControlMixin';
export * from './PopoverTargetMixin';