We missed this because Flow wasn't being run properly on Travis but now that it is, it's clear that #7716 introduced a bunch of new Flow failures. Most of these shouldn't be too bad and I like to say "you break it you buy it" so this one is for you @Aweary :)

There were a couple other pre-existing Flow issues that @vjeux is going to fix, so mostly this should just be the TestRenderer issues.

validAttributes: Object;
  uiViewClassName: string;
}
/**
 * @constructor ReactNativeBaseComponent
 * @extends ReactComponent
 * @extends ReactMultiChild
 * @param {!object} UIKit View Configuration.
 */
var ReactNativeBaseComponent = function(
  viewConfig: ReactNativeBaseComponentViewConfig
) {
  this.viewConfig = viewConfig;
};
/**
 * Mixin for containers that contain UIViews. NOTE: markup is rendered markup
 * which is a `viewID` ... see the return value for `mountComponent` !
 */
ReactNativeBaseComponent.Mixin = {
  getPublicInstance: function() {
    
    return this;
  },
  unmountComponent: function() {
    ReactNativeComponentTree.uncacheNode(this);
    deleteAllListeners(this);
    this.unmountChildren();
    this._rootNodeID = 0;
  },
  /**