code: function findDOMNode(componentOrElement) {
  	  if (process.env.NODE_ENV !== 'production') {
  	    var owner = ReactCurrentOwner.current;
  	    if (owner !== null) {
  	      process.env.NODE_ENV !== 'production' ? warning(owner._warnedAboutRefsInRender, '%s is accessing findDOMNode inside its render(). ' + 'render() should be a pure function of props and state. It should ' + 'never access something that requires stale data from the previous ' + 'render, such as refs. Move this logic to componentDidMount and ' + 'componentDidUpdate instead.', owner.getName() || 'A component') : void 0;
  	      owner._warnedAboutRefsInRender = true;
  	    }
  	  }
  	  if (componentOrElement == null) {
  	    return null;
  	  }
  	  if (componentOrElement.nodeType === 1) {
  	    return componentOrElement;
  	  }
  
  	  var inst = ReactInstanceMap.get(componentOrElement);
  	  if (inst) {
  	    inst = getHostComponentFromComposite(inst);
  	    return inst ? ReactDOMComponentTree.getNodeFromInstance(inst) : null;
  	  }
  
  	  if (typeof componentOrElement.render === 'function') {
  	    process.env.NODE_ENV !== 'production' ? invariant(false, 'findDOMNode was called on an unmounted component.') : _prodInvariant('44');
  	  } else {
  	    process.env.NODE_ENV !== 'production' ? invariant(false, 'Element appears to be neither ReactComponent nor DOMNode (keys: %s)', Object.keys(componentOrElement)) : _prodInvariant('45', Object.keys(componentOrElement));
  	  }
  	}
docs: Returns the DOM node rendered by this element.
  
  See https://facebook.github.io/react/docs/top-level-api.html#reactdom.finddomnode
  
  @param {ReactComponent|DOMElement} componentOrElement
  @return {?DOMElement} The root node of this element.