Can we locate the line number when react makes a warning like this "Unknown DOM property class. Did you mean className?"

There is no hint about which code made this warning.

});
  });
  describe('mountComponent', function() {
    var mountComponent;
    beforeEach(function() {
      mountComponent = function(props) {
        var container = document.createElement('div');
        ReactDOM.render(<div {...props} />, container);
      };
    });
    it('should not duplicate uppercased selfclosing tags', function() {
      var Container = React.createClass({
        render: function() {
          return React.createElement('BR', null);
        },
      });
      var returnedValue = ReactDOMServer.renderToString(<Container/>);
      expect(returnedValue).not.toContain('</BR>');
    });
    it('should warn against children for void elements', function() {
      var container = document.createElement('div');
      expect(function() {
        ReactDOM.render(<input>children</input>, container);
      }).toThrow(
        'input is a void element tag and must not have `children` or ' +
        'use `props.dangerouslySetInnerHTML`.'
      );
    });
    it('should warn against dangerouslySetInnerHTML for void elements', function() {
      var container = document.createElement('div');