Extracted from https://github.com/facebook/react/issues/12643.

We're currently diff a host node in the complete phase even if it has bailed out in the begin phase. By itself, this just means we're doing a little bit more work than necessary. But it also has some observable effects. In particular, https://github.com/facebook/react/issues/13424 (which by itself would be very rare and probably not worth fixing) is made worse because we end up committing update to inputs from another component.

I have a fix for this in https://github.com/facebook/react/pull/13423. Filing this for posterity.
}
    removeChildFromContainerOrInstance(parentInstance, child);
  }
  let elapsedTimeInMs = 0;
  const sharedHostConfig = {
    getRootHostContext() {
      return NO_CONTEXT;
    },
    getChildHostContext() {
      return NO_CONTEXT;
    },
    getPublicInstance(instance) {
      return instance;
    },
    createInstance(type: string, props: Props): Instance {
      if (type === 'errorInCompletePhase') {
        throw new Error('Error in host config.');
      }
      const inst = {
        id: instanceCounter++,
        type: type,
        children: [],
        prop: props.prop,
      };
      
      Object.defineProperty(inst, 'id', {value: inst.id, enumerable: false});
      return inst;
    },
    appendInitialChild(
      parentInstance: Instance,