code: function componentWillReceiveProps(nextProps) {
       false ? (0, _routerWarning2.default)(nextProps.history === this.props.history, 'You cannot change <Router history>; it will be ignored') : void 0;
  
       false ? (0, _routerWarning2.default)((nextProps.routes || nextProps.children) === (this.props.routes || this.props.children), 'You cannot change <Router routes>; it will be ignored') : void 0;
    }
docs: /* istanbul ignore next: sanity check