text: import MetadataProvider from './MetadataProvider.js';
  import CommandsManager from './CommandsManager.js';
  import HotkeysContext from './HotkeysContext.js';
  import HotkeysManager from './HotkeysManager.js';
  import ImageSet from './ImageSet';
  import { StudyPrefetcher } from './StudyPrefetcher';
  import { StudyLoadingListener } from './StudyLoadingListener';
  import { StackLoadingListener } from './StudyLoadingListener';
  import { DICOMFileLoadingListener } from './StudyLoadingListener';
  import { StudyMetadata } from './metadata/StudyMetadata';
  import { SeriesMetadata } from './metadata/SeriesMetadata';
  import { InstanceMetadata } from './metadata/InstanceMetadata';
  //import { StudySummary } from './metadata/StudySummary';
  import { TypeSafeCollection } from './TypeSafeCollection';
  import OHIFError from './OHIFError.js';
  import { StudyMetadataSource } from './StudyMetadataSource';
  import HotkeysUtil from './HotkeysUtil.js';
  import { OHIFStudyMetadataSource } from './OHIFStudyMetadataSource';
  import { StudySummary } from './metadata/StudySummary';
  
  export {
    OHIFStudyMetadataSource,
    MetadataProvider,
    CommandsManager,
    HotkeysContext,
    HotkeysManager,
    ImageSet,
    StudyPrefetcher,
    //StudyLoadingListener,
    StackLoadingListener,
    DICOMFileLoadingListener,
    StudyMetadata,
    SeriesMetadata,
    InstanceMetadata,
    StudySummary,
    TypeSafeCollection,
    OHIFError,
    StudyMetadataSource,
    HotkeysUtil
  };
  
  const classes = {
    OHIFStudyMetadataSource,
    MetadataProvider,
    CommandsManager,
    HotkeysContext,
    HotkeysManager,
    HotkeysUtil,
    ImageSet,
    StudyPrefetcher,
    StudyLoadingListener,
    StackLoadingListener,
    DICOMFileLoadingListener,
    StudyMetadata,
    SeriesMetadata,
    InstanceMetadata,
    StudySummary,
    TypeSafeCollection,
    OHIFError,
    StudyMetadataSource
  };
  
  export default classes;
  