code: def is_ecma_regex(regex):
      
      parts = regex.split('/')
  
      if len(parts) == 1:
          return False
  
      if len(parts) < 3:
          raise ValueError('Given regex isn\'t ECMA regex nor Python regex.')
      parts.pop()
      parts.append('')
  
      raw_regex = '/'.join(parts)
      if raw_regex.startswith('/') and raw_regex.endswith('/'):
          return True
      return False
docs: Check if given regex is of type ECMA 262 or not.
  
      :rtype: bool