https://preactjs.com/blog/preact-11 Read the upgrade-guide over at https://preactjs.com/guide/v11/upgrade-guide All other release notes can be seen at https://github.com/preactjs/preact/releases/tag/11.0.0-rc.2 https://github.com/preactjs/preact/releases/tag/11.0.0-rc.1 https://github.com/preactjs/preact/releases/tag/11.0.0-rc.0 https://github.com/preactjs/preact/releases/tag/11.0.0-beta.2 https:/…
Notable Preserve hook state when Suspense re-suspends (#5239, thanks @JoviDeCroock) Types Add selectedcontent JSX type (#5234, thanks @JoviDeCroock) Make the Children.map/forEach context argument optional (#5230, thanks @JoviDeCroock) Fixes Keep the pending error flag until the boundary's retry render (#5227, thanks @JoviDeCroock) Only treat components with error handlers as error boundaries (#522…
Features Tree-shake feature-specific compat hooks (#5203, thanks @JoviDeCroock) Bundle size Simplify toChildArray guards (#5214, thanks @JoviDeCroock) Remove unused memo factory state (#5213, thanks @JoviDeCroock) Remove redundant textarea hydration hook (#5212, thanks @JoviDeCroock) Require prop type stack getter (#5210, thanks @JoviDeCroock) Types Add missing lowercased html attributes to dom.d.…
Features implement use in compat (#5186, thanks @JoviDeCroock) Implement getServerSnapshot for useSyncExternalStore (#4979, thanks @ssssota) Support createPortal in core (#5168, thanks @JoviDeCroock) Add useEffectEvent hook to compat (#5141, thanks @Mesoptier) Correctness Leverage moveBefore rather than insertBefore when available (#5161, thanks @JoviDeCroock) Avoid mutating user-provided style ob…
Performance Batch updates in flushSync (#5173, thanks @JoviDeCroock) Avoid traversing retained subtrees (#5182, thanks @JoviDeCroock)
Forward porting Frontport 10.29.4 (#5139, thanks @JoviDeCroock) Frontport 10.29.3 (#5122, thanks @JoviDeCroock) Forwardport v10.x fixes since 2026-03-25 (#5089, thanks @JoviDeCroock) Forwardport from v10 (#5053, thanks @JoviDeCroock) Features Implement streamed hydration rfc (#5035, thanks @JoviDeCroock) Types Remove erroneous 'type' attribute from select element types (#5097, thanks @rschristian)…
Maintenance Make RTS optional peer dep (#5150, thanks @JoviDeCroock)
We had to revert #5055 due to an incompatibility with useSignalEffect
Fixes Compat Suspense hydration children recovery (#5144, thanks @JoviDeCroock)
Fixes Fix hydration-suspense crashing due to sCU bail (#5134, thanks @JoviDeCroock) Revert "Fix useId stability across async Suspense (#5108)" (#5135, thanks @JoviDeCroock)
Fixes Fix error recovery for partially rendered subtrees (#5120, thanks @JoviDeCroock) Fix useId stability across async Suspense (#5108, thanks @JoviDeCroock) Flush subtree effects when rendering a pending node (#5055, thanks @JoviDeCroock) Fix hydrate recovery with null excess DOM children (#5112, thanks @JoviDeCroock) Performance Address and guard memory leak hotspots (#5116, thanks @JoviDeCrooc…
Fixes Fix hydration when we have defaultValue or value on a textarea (#5081, thanks @JoviDeCroock) Maintenance Add CODEOWNERS for GitHub configuration (v10.x) (#5088, thanks @JoviDeCroock) Fix trusted publishing workflow (#5084, thanks @JoviDeCroock) Trusted publishing (#5072, thanks @JoviDeCroock)
Fixes Create a unique event-clock for each Preact instance on a page. (#5068, thanks @JoviDeCroock) Fix incorrect DOM order with conditional ContextProvider and inner keys (#5067, thanks @JoviDeCroock) Maintenance fix: Remove postinstall script for playwright setup (#5063, thanks @rschristian) chore: speed up tests by using playwright instead of webdriverio (#5060, thanks @marvinhagemeister) chore…
Features Implement flushSync (#5036, thanks @JoviDeCroock) Fixes Ensure we reset renderCount (#5017, thanks @JoviDeCroock) undefined prototype (#5041, thanks @JoviDeCroock) Performance Golf down compat (#5025, thanks @JoviDeCroock)
Fixes Fix crash where a synchronous effect render unmounts the tree (#5026, thanks @JoviDeCroock) Performance Core size optimizations (#5022, thanks @JoviDeCroock) Hooks size optimizations (#5021, thanks @JoviDeCroock) Make oldProps diffing more compact (#5004) (#5019, thanks @JoviDeCroock) Compat size optimizations (#5020, thanks @JoviDeCroock) Land size optimization separately (#5018, thanks @Jo…
Fixes Forward-port fixes from v10 (#5008, thanks @JoviDeCroock) Avoid scheduling suspense state udpates (#5006, thanks @JoviDeCroock) Resolve some suspense crashes (#4999, thanks @JoviDeCroock) Support inheriting namespace through portals (#4993) (#4995, thanks @JoviDeCroock) Forward-port diffing fix (#4976, thanks @JoviDeCroock) Fix cascading renders with signals (#4966) (#4969, thanks @JoviDeCro…
Fixes Avoid scheduling suspense state udpates (#5006, thanks @JoviDeCroock) Resolve some suspense crashes (#4999, thanks @JoviDeCroock) Support inheriting namespace through portals (#4993, thanks @JoviDeCroock) Maintenance Update test with addition of _original (#4989, thanks @JoviDeCroock)
Fixes Enforce strict equality for VNode object constructors
Fixes Enforce strict equality for VNode object constructors
Fixes Enforce strict equality for VNode object constructors