'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; };