code: def elements_in_files(filelist):
      '''Get a list of what elements exist in JSON files
  
      This works on table, element, and component data files
  
      Parameters
      ----------
      filelist : list
          A list of paths to json files
  
      Returns
      -------
      dict
          Keys are the file path, value is a compacted element string of
          what elements are in that file 
      '''
  
      ret = {}
      for fpath in filelist:
          filedata = fileio.read_json_basis(fpath)
          els = list(filedata['elements'].keys())
          ret[fpath] = misc.compact_elements(els)
  
      return ref elements_in_files(filelist):
      '''Get a list of what elements exist in JSON files
  
      This works on table, element, and component data files
  
      Parameters
      ----------
      filelist : list
          A list of paths to json files
  
      Returns
      -------
      dict
          Keys are the file path, value is a compacted element string of
          what elements are in that file 
      '''
  
      ret = {}
      for fpath in filelist:
          filedata = fileio.read_json_basis(fpath)
          els = list(filedata['elements'].keys())
          ret[fpath] = misc.compact_elements(els)
  
      return ret
docs: Get a list of what elements exist in JSON files
  
      This works on table, element, and component data files
  
      Parameters
      ----------
      filelist : list
          A list of paths to json files
  
      Returns
      -------
      dict
          Keys are the file path, value is a compacted element string of
          what elements are in that file