text: 'use strict';
  
  Object.defineProperty(exports, "__esModule", {
  	value: true
  });
  exports['default'] = symbolObservablePonyfill;
  function symbolObservablePonyfill(root) {
  	var result;
  	var _Symbol = root.Symbol;
  
  	if (typeof _Symbol === 'function') {
  		if (_Symbol.observable) {
  			result = _Symbol.observable;
  		} else {
  			result = _Symbol('observable');
  			_Symbol.observable = result;
  		}
  	} else {
  		result = '@@observable';
  	}
  
  	return result;
  };