webdebugger/build/app.js
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));
	  }
	}
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));
	  }
	}
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 ) ) ; } }
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.
Returns the DOM node rendered by this element .