react 17.0.0 release notes

semverse.

react 17.0.0 release notes · Semverse

Delegate events to roots instead of document. (@trueadm in #18195 and others)
Clean up all effects before running any next effects. (@bvaughn in #17947)
Run useEffect cleanup functions asynchronously. (@bvaughn in #17925)
Use browser focusin and focusout for onFocus and onBlur. (@trueadm in #19186)
Make all Capture events use the browser capture phase. (@trueadm in #19221)
Don't emulate bubbling of the onScroll event. (@gaearon in #19464)
Throw if forwardRef or memo component returns undefined. (@gaearon in #19550)
Remove event pooling. (@trueadm in #18969)
Stop exposing internals that won’t be needed by React Native Web. (@necolas in #18483)
Attach all known event listeners when the root mounts. (@gaearon in #19659)
Disable console in the second render pass of DEV mode double render. (@sebmarkbage in #18547)
Deprecate the undocumented and misleading ReactTestUtils.SimulateNative API. (@gaearon in #13407)
Rename private field names used in the internals. (@gaearon in #18377)
Don't call User Timing API in development. (@gaearon in #18417)
Disable console during the repeated render in Strict Mode. (@sebmarkbage in #18547)
In Strict Mode, double-render components without Hooks too. (@eps1lon in #18430)
Allow calling ReactDOM.flushSync during lifecycle methods (but warn). (@sebmarkbage in #18759)
Add the code property to the keyboard event objects. (@bl00mber in #18287)
Add the disableRemotePlayback property for video elements. (@tombrowndev in #18619)
Add the enterKeyHint property for input elements. (@eps1lon in #18634)
Warn when no value is provided to <Context.Provider>. (@charlie1404 in #19054)
Warn when memo or forwardRef components return undefined. (@bvaughn in #19550)
Improve the error message for invalid updates. (@JoviDeCroock in #18316)
Exclude forwardRef and memo from stack frames. (@sebmarkbage in #18559)
Improve the error message when switching between controlled and uncontrolled inputs. (@vcarl in #17070)
Keep onTouchStart, onTouchMove, and onWheel passive. (@gaearon in #19654)
Fix setState hanging in development inside a closed iframe. (@gaearon in #19220)
Fix rendering bailout for lazy components with defaultProps. (@jddxf in #18539)
Fix a false positive warning when dangerouslySetInnerHTML is undefined. (@eps1lon in #18676)
Fix Test Utils with non-standard require implementation. (@just-boris in #18632)
Fix onBeforeInput reporting an incorrect event.type. (@eps1lon in #19561)
Fix event.relatedTarget reported as undefined in Firefox. (@claytercek in #19607)
Fix "unspecified error" in IE11. (@hemakshis in #19664)
Fix rendering into a shadow root. (@Jack-Works in #15894)
Fix movementX/Y polyfill with capture events. (@gaearon in #19672)
Use delegation for onSubmit and onReset events. (@gaearon in #19333)
Improve memory usage. (@trueadm in #18970)

react

17.0.0

Potential breaking changes

React

17.0.0

Potential breaking changes

React

React DOM

React DOM Server

React Test Renderer

Concurrent Mode (Experimental)

Artifacts

17.0.0#

Potential breaking changes

React

17.0.0#

Potential breaking changes

React

React DOM

React DOM Server

React Test Renderer

Concurrent Mode (Experimental)

Artifacts

17.0.0

17.0.0