alter tail update message and configuration

README.md

@@ -419,6 +419,13 @@ const Hello = () => 'Hello';
 export default hot(Hello); // <-- module will reload itself
 ```
 
+To support any code splitting library RHL uses a special _tail update detection_ logic -
+if some components would be requested after initial HMR event - Application would be updated yet again to
+apply possible change.
+In this case you will see a message `React-Hot-Loader: some components were updated out-of-bound. Updating your app to reconcile the changes.`.
+
+If this is not something you want or need - you might disable this behavior by setting `setConfiguration({trackTailUpdates:false})` to disable it.
+
 ### Checking Element `type`s
 
 Because React Hot Loader creates proxied versions of your components, comparing

src/configuration.js

@@ -43,9 +43,6 @@ const configuration = {
  // flag to completely disable RHL for SFC. Probably don't use it without dom patch made.
  ignoreSFC: false,
 
- // flag to disable special treatment for React.lazy
- ignoreLazy: false,
-
  // ignoreSFC when injection into react-dom is made
  ignoreSFCWhenInjected: true,
 

src/reconciler/fiberUpdater.js

@@ -7,7 +7,7 @@ import { resolveType } from './resolver';
 const lazyConstructor = '_ctor';
 
 const patchLazyConstructor = target => {
- if (!configuration.ignoreLazy && !target[lazyConstructor].isPatchedByReactHotLoader) {
+ if (!configuration.trackTailUpdates && !target[lazyConstructor].isPatchedByReactHotLoader) {
  const ctor = target[lazyConstructor];
  target[lazyConstructor] = () =>
  ctor().then(m => {

test/hot/react-dom.integration.spec.js

@@ -64,6 +64,7 @@ describe(`🔥-dom`, () => {
  expect(el.innerHTML).toEqual('fun2');
 
  expect(mount).toHaveBeenCalledWith('test1');
+ // THIS TEST IS EXPECTED TO FAIL ON LOCAL MACHINE (have no idea why)!!
  expect(mount).not.toHaveBeenCalledWith('test2');
  expect(unmount).not.toHaveBeenCalled();
  });
@@ -237,6 +238,7 @@ describe(`🔥-dom`, () => {
  }
 
  await tick();
+ // THIS TEST IS EXPECTED TO FAIL ON LOCAL MACHINE (have no idea why)!!
  expect(el.innerHTML).toEqual('test1');
 
  incrementHotGeneration();
@@ -340,6 +342,10 @@ describe(`🔥-dom`, () => {
  });
 
  it('support lazy memo forward in Provider', () => {
+ setConfig({
+ trackTailUpdates: false,
+ });
+
  const spy = jest.fn();
  const sandbox = x => {
  const Comp = () => {

test/hot/react-dom.no-integration.spec.js

@@ -270,6 +270,10 @@ describe(`🔥-dom`, () => {
  });
 
  it('support lazy memo forward', () => {
+ setConfig({
+ trackTailUpdates: false,
+ });
+
  const spy = jest.fn();
  const sandbox = x => {
  const Comp = () => {