Ship 15.4.0

[zpao]

This might be a little ways out, but going to start the process. We definitely want to run an RC here and push it through React Native. We'll want other people to play with it too. There's a big packaging change and it has potential to have issues.

[gaearon]

I just published 15.4.0-rc.3.

Installation

npm i --save react@15.4.0-rc.3 react-dom@15.4.0-rc.3

If you use snapshot testing:

npm i --save-dev react-test-renderer@15.4.0-rc.3

Please report issues!

There is a big change in how internals are organized. We are continuing to split React from ReactDOM internally, and in this release a bunch of internal modules has moved from react/lib/* to react-dom/lib/*. They were never a part of the public API so it's valid as a minor version, but we published this RC so that you have a chance to assess whether you or any libraries you depend on use private APIs, and raise issues with their maintainers before 15.4.0 is stable.

If your package depends on React internal APIs, consider copying the relevant code in your project. React makes no guarantees that any imports from /lib/ folders will ever be supported. They may technically break in any patch version even though we are taking extra steps to make it smooth. As a quick fix, you can replace react/lib/ with react-dom/lib/ and it will likely work, but many of those modules might get removed or further renamed in React 16. Please don't use internal modules of React.

If you found an issue in a popular React-related library that breaks in 15.4.0, please post here so that we keep track of them.

[faalsh]

I'm getting:

Module not found: Error: Cannot resolve module 'react/lib/ReactMount'

[gaearon]

@faalsh

If you didn't mean to install the RC please run:

npm i --save react@latest react-dom@latest

We published RC4 as latest by mistake but it wasn't meant to be installed automatically.

If you are trying out RC on purpose, please look at which library tries to import react/lib/ReactMount. It's likely not your code, is it? Then file an issue with that library.

[faalsh]

@gaearon I'm trying out RC on purpose. Thanks for the tip, the error is caused by react-hot-loader.

[gaearon]

RHL 1.x (which is the one relying on this internal module) has been unsupported for more than a year. Please migrate to 3.x if you'd like to keep using it. There are instructions linked from the first paragraph in its README.

[thisbejim]

Hi @gaearon, I am currently on react@15.4.0-rc.3 react-dom@15.4.0-rc.3 react-test-renderer@15.4.0-rc.3 and jest@16.0.2 and when snapshot testing material-ui components with react-test-renderer I get the following error:

Invariant Violation: getNodeFromInstance: Invalid argument.

at invariant (node_modules/fbjs/lib/invariant.js:38:15)
      at Object.getNodeFromInstance (node_modules/react-dom/lib/ReactDOMComponentTree.js:155:77)
      at Object.findDOMNode (node_modules/react-dom/lib/findDOMNode.js:49:41)
      at ListItem.applyFocusState (node_modules/material-ui/List/ListItem.js:300:43)
      at MenuItem.applyFocusState (node_modules/material-ui/MenuItem/MenuItem.js:198:26)
      at MenuItem.componentDidMount (node_modules/material-ui/MenuItem/MenuItem.js:167:12)
      at node_modules/react-test-renderer/lib/ReactCompositeComponent.js:265:25
      at measureLifeCyclePerf (node_modules/react-test-renderer/lib/ReactCompositeComponent.js:75:12)
      at node_modules/react-test-renderer/lib/ReactCompositeComponent.js:264:11
      at CallbackQueue.notifyAll (node_modules/react-test-renderer/lib/CallbackQueue.js:76:22)
      at ReactTestReconcileTransaction.ON_DOM_READY_QUEUEING.close (node_modules/react-test-renderer/lib/ReactTestReconcileTransaction.js:36:26)
      at ReactTestReconcileTransaction.TransactionImpl.closeAll (node_modules/react-test-renderer/lib/Transaction.js:206:25)
      at ReactTestReconcileTransaction.TransactionImpl.perform (node_modules/react-test-renderer/lib/Transaction.js:153:16)
      at batchedMountComponentIntoNode (node_modules/react-test-renderer/lib/ReactTestMount.js:69:27)
      at ReactDefaultBatchingStrategyTransaction.TransactionImpl.perform (node_modules/react-test-renderer/lib/Transaction.js:140:20)
      at Object.ReactDefaultBatchingStrategy.batchedUpdates (node_modules/react-test-renderer/lib/ReactDefaultBatchingStrategy.js:62:26)
      at Object.batchedUpdates (node_modules/react-test-renderer/lib/ReactUpdates.js:97:27)
      at Object.ReactTestMount.render [as create] (node_modules/react-test-renderer/lib/ReactTestMount.js:125:18)
      at Object.<anonymous> (src/components/app/__tests__/app.js:60:68)
      at process._tickCallback (internal/process/next_tick.js:103:7)

Repro if needed.

Any insights? Thanks.

[gaearon]

@thisbejim It's not a regression though, is it? Did it ever work before?

@aweary Can you look at #7770 (comment) please? My intuition is that we support mock "DOM" refs but not findDOMNode() at the moment.