@gaearon gaearon released this Nov 13, 2017 · 14 commits to master since this release

16.1.1 (November 13, 2017)


  • Improve the warning about undefined component type. (@selbekk in #11505)

React DOM

React DOM Server

  • Don't freeze the ReactDOMServer public API. (@travi in #11531)
  • Don't emit autoFocus={false} attribute on the server. (@gaearon in #11543)

React Reconciler



@gaearon gaearon released this Nov 9, 2017 · 34 commits to master since this release

16.1.0 (November 9, 2017)

Discontinuing Bower Releases

Starting with 16.1.0, we will no longer be publishing new releases on Bower. You can continue using Bower for old releases, or point your Bower configs to the React UMD builds hosted on unpkg that mirror npm releases and will continue to be updated.

All Packages

  • Fix an accidental extra global variable in the UMD builds. (@gaearon in #10935)


  • Add support for portals in React.Children utilities. (@MatteoVH in #11378)
  • Warn when a class has a render method but doesn't extend a known base class. (@sw-yx in #11168)
  • Improve the warning when accidentally returning an object from constructor. (@deanbrophy in #11395)

React DOM

React DOM Server

  • Add a new suppressHydrationWarning attribute for intentional client/server text mismatches. (@sebmarkbage in #11126)
  • Fix markup generation when components return strings. (@gaearon in #11109)
  • Fix obscure error message when passing an invalid style value. (@iamdustan in #11173)
  • Include the autoFocus attribute into SSR markup. (@gaearon in #11192)
  • Include the component stack into more warnings. (@gaearon in #11284)

React Test Renderer and Test Utils

  • Fix multiple setState() calls in componentWillMount() in shallow renderer. (@Hypnosphi in #11167)
  • Fix shallow renderer to ignore shouldComponentUpdate() after forceUpdate(). (@d4rky-pl in #11239 and #11439)
  • Handle forceUpdate() and React.PureComponent correctly. (@koba04 in #11440)
  • Add back support for running in production mode. (@gaearon in #11112)
  • Add a missing package.json dependency. (@gaearon in #11340)

React ART

  • Add a missing package.json dependency. (@gaearon in #11341)
  • Expose react-art/Circle, react-art/Rectangle, and react-art/Wedge. (@gaearon in #11343)

React Reconciler (Experimental)

React Call Return (Experimental)



@acdlite acdlite released this Sep 26, 2017 · 353 commits to master since this release

16.0.0 (September 26, 2017)

Learn more in the React 16.0 announcement post!

New JS Environment Requirements

New Features

  • Components can now return arrays and strings from render. (Docs coming soon!)
  • Improved error handling with introduction of "error boundaries". Error boundaries are React components that catch JavaScript errors anywhere in their child component tree, log those errors, and display a fallback UI instead of the component tree that crashed.
  • First-class support for declaratively rendering a subtree into another DOM node with ReactDOM.createPortal(). (Docs coming soon!)
  • Streaming mode for server side rendering is enabled with ReactDOMServer.renderToNodeStream() and ReactDOMServer.renderToStaticNodeStream(). (@aickin in #10425, #10044, #10039, #10024, #9264, and others.)
  • React DOM now allows passing non-standard attributes. (@nhunzaker in #10385, 10564, #10495 and others)

Breaking Changes

  • There are several changes to the behavior of scheduling and lifecycle methods:
    • ReactDOM.render() and ReactDOM.unstable_renderIntoContainer() now return null if called from inside a lifecycle method.
    • Minor changes to setState behavior:
      • Calling setState with null no longer triggers an update. This allows you to decide in an updater function if you want to re-render.
      • Calling setState directly in render always causes an update. This was not previously the case. Regardless, you should not be calling setState from render.
      • setState callback (second argument) now fires immediately after componentDidMount / componentDidUpdate instead of after all components have rendered.
    • When replacing <A /> with <B />, B.componentWillMount now always happens before A.componentWillUnmount. Previously, A.componentWillUnmount could fire first in some cases.
    • Previously, changing the ref to a component would always detach the ref before that component's render is called. Now, we change the ref later, when applying the changes to the DOM.
    • It is not safe to re-render into a container that was modified by something other than React. This worked previously in some cases but was never supported. We now emit a warning in this case. Instead you should clean up your component trees using ReactDOM.unmountComponentAtNode. See this example.
    • componentDidUpdate lifecycle no longer receives prevContext param. (@bvaughn in #8631)
    • Non-unique keys may now cause children to be duplicated and/or omitted. Using non-unique keys is not (and has never been) supported, but previously it was a hard error.
    • Shallow renderer no longer calls componentDidUpdate() because DOM refs are not available. This also makes it consistent with componentDidMount() (which does not get called in previous versions either).
    • Shallow renderer does not implement unstable_batchedUpdates() anymore.
    • ReactDOM.unstable_batchedUpdates now only takes one extra argument after the callback.
  • The names and paths to the single-file browser builds have changed to emphasize the difference between development and production builds. For example:
    • react/dist/react.jsreact/umd/react.development.js
    • react/dist/react.min.jsreact/umd/react.production.min.js
    • react-dom/dist/react-dom.jsreact-dom/umd/react-dom.development.js
    • react-dom/dist/react-dom.min.jsreact-dom/umd/react-dom.production.min.js
  • The server renderer has been completely rewritten, with some improvements:
    • Server rendering does not use markup validation anymore, and instead tries its best to attach to existing DOM, warning about inconsistencies. It also doesn't use comments for empty components and data-reactid attributes on each node anymore.
    • Hydrating a server rendered container now has an explicit API. Use ReactDOM.hydrate instead of ReactDOM.render if you're reviving server rendered HTML. Keep using ReactDOM.render if you're just doing client-side rendering.
  • When "unknown" props are passed to DOM components, for valid values, React will now render them in the DOM. See this post for more details. (@nhunzaker in #10385, 10564, #10495 and others)
  • Errors in the render and lifecycle methods now unmount the component tree by default. To prevent this, add error boundaries to the appropriate places in the UI.

Removed Deprecations

  • There is no react-with-addons.js build anymore. All compatible addons are published separately on npm, and have single-file browser versions if you need them.
  • The deprecations introduced in 15.x have been removed from the core package. React.createClass is now available as create-react-class, React.PropTypes as prop-types, React.DOM as react-dom-factories, react-addons-test-utils as react-dom/test-utils, and shallow renderer as react-test-renderer/shallow. See 15.5.0 and 15.6.0 blog posts for instructions on migrating code and automated codemods.



@nhunzaker nhunzaker released this Nov 15, 2017 · 2943 commits to master since this release

15.6.2 (September 25, 2017)

All Packages

  • Switch from BSD + Patents to MIT license

React DOM

  • Fix a bug where modifying document.documentMode would trigger IE detection in other browsers, breaking change events. (@aweary in #10032)
  • CSS Columns are treated as unitless numbers. (@aweary in #10115)
  • Fix bug in QtWebKit when wrapping synthetic events in proxies. (@walrusfruitcake in #10115)
  • Prevent event handlers from receiving extra argument in development. (@aweary in #10115)
  • Fix cases where onChange would not fire with defaultChecked on radio inputs. (@jquense in #10156)
  • Add support for controlList attribute to DOM property whitelist (@nhunzaker in #9940)
  • Fix a bug where creating an element with a ref in a constructor did not throw an error in development. (@iansu in #10025)