@umbraco-ui/uui-base/lib/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 './animations';
export * from './events';
export * from './mixins';
export * from './registration';
export * from './types';
export * from './utils';