text: export const BUILD_SM_UI = 'BUILD_SM_UI';
  export const DELETE_ITEM = 'DELETE_ITEM';
  
  export const ADD_DROP_TARGETS = 'ADD_DROP_TARGETS';
  export const REMOVE_DROP_TARGETS = 'REMOVE_DROP_TARGETS';
  export const SET_ACTIVE_DRAG_SOURCE = 'SET_ACTIVE_DRAG_SOURCE';
  export const REMOVE_ACTIVE_DRAG_SOURCES = 'REMOVE_ACTIVE_DRAG_SOURCES';
  export const HANDLE_LIST_ITEM_DROP = 'HANDLE_LIST_ITEM_DROP';
  
  export const IS_EDITING_TIMESPAN = 'IS_EDITING_TIMESPAN';
  export const RETRIEVE_STRUCTURE_SUCCESS = 'RETRIEVE_STRUCTURE_SUCCESS';
  export const UPDATE_STRUCTURE_STATUS = 'UPDATE_STRUCTURE_STATUS';
  export const HANDLE_STRUCTURE_ERROR = 'HANDLE_STRUCTURE_ERROR';
  export const RETRIEVE_WAVEFORM_SUCCESS = 'RETRIEVE_WAVEFORM_SUCCESS';
  export const SAVE_INIT_SMDATA = 'SAVE_INIT_SMDATA';
  
  export const STREAM_MEDIA_ERROR = 'STREAM_MEDIA_ERROR';
  export const STREAM_MEDIA_SUCCESS = 'STREAM_MEDIA_SUCCESS';
  
  export const INIT_PEAKS = 'INIT_PEAKS';
  export const PEAKS_READY = 'PEAKS_READY';
  export const INSERT_SEGMENT = 'INSERT_SEGMENT';
  export const DELETE_SEGMENT = 'DELETE_SEGMENT';
  export const ACTIVATE_SEGMENT = 'ACTIVATE_SEGMENT';
  export const SAVE_SEGMENT = 'SAVE_SEGMENT';
  export const REVERT_SEGMENT = 'REVERT_SEGMENT';
  export const UPDATE_SEGMENT = 'UPDATE_SEGMENT';
  export const TEMP_INSERT_SEGMENT = 'TEMP_INSERT_SEGMENT';
  export const TEMP_DELETE_SEGMENT = 'TEMP_DELETE_SEGMENT';
  export const IS_DRAGGING = 'IS_DRAGGING';
  
  export const RESET_STORE = 'RESET_STORE';
  