Bug Fixes

• compiler-core: handle v-memo + v-for with functional key (#12014) (99009ee), closes #12013
• compiler-dom: properly stringify template string style (#12392) (2d78539), closes #12391
• custom-element: avoid triggering mutationObserver when relecting props (352bc88), closes #12214 #12215
• deps: update dependency postcss to ^8.4.48 (#12356) (b5ff930)
• hydration: the component vnode's el should be updated when a mismatch occurs. (#12255) (a20a4cb), closes #12253
• reactivity: avoid unnecessary watcher effect removal from inactive scope (2193284), closes #5783 #5806
• reactivity: release nested effects/scopes on effect scope stop (#12373) (bee2f5e), closes #12370
• runtime-dom: set css vars before user onMounted hooks (2d5c5e2), closes #11533
• runtime-dom: set css vars on update to handle child forcing reflow in onMount (#11561) (c4312f9)
• ssr: avoid updating subtree of async component if it is resolved (#12363) (da7ad5e), closes #12362
• ssr: ensure v-text updates correctly with custom directives in SSR output (#12311) (1f75d4e), closes #12309
• ssr: handle initial selected state for select with v-model + v-for option (#12399) (4f8d807), closes #12395
• teleport: handle deferred teleport update before mounted (#12168) (8bff142), closes #12161
• templateRef: set ref on cached async component which wrapped in KeepAlive (#12290) (983eb50), closes #4999 #5004
• test: update snapshot (#12169) (828d4a4)
• Transition: fix transition memory leak edge case (#12182) (660132d), closes #12181
• transition: reflow before leave-active class after leave-from (#12288) (4b479db), closes #2593
• types: defineEmits w/ interface declaration (#12343) (1022eab), closes #8457
• v-once: setting hasOnce to current block only when in v-once (#12374) (37300fc), closes #12371

Performance Improvements

• reactivity: do not track inner key `__v_skip`` (#11690) (d637bd6)
• runtime-core: use feature flag for call to resolveMergedOptions (#12163) (1755ac0)

Bug Fixes

• compiler-dom: avoid stringify option with null value (#12096) (f6d9926), closes #12093
• compiler-sfc: do not skip TSInstantiationExpression when transforming props destructure (#12064) (d3ecde8)
• compiler-sfc: use sass modern api if available and avoid deprecation warning (#11992) (4474c11)
• compiler: clone loc to ifNode (#12131) (cde2c06), closes vuejs/language-tools#4911
• custom-element: properly remove hyphenated attribute (#12143) (e16e9a7), closes #12139
• defineModel: handle kebab-case model correctly (#12063) (c0418a3), closes #12060
• deps: update dependency monaco-editor to ^0.52.0 (#12119) (f7cbea2)
• hydration: provide compat fallback for idle callback hydration strategy (#11935) (1ae545a)
• reactivity: trigger reactivity for Map key undefined (#12055) (7ad289e), closes #12054
• runtime-core: allow symbol values for slot prop key (#12069) (d9d4d4e), closes #12068
• runtime-core: fix required prop check false positive for kebab-case edge cases (#12034) (9da1ac1), closes #12011
• runtime-dom: prevent unnecessary updates in v-model checkbox when value is unchanged (#12146) (ea943af), closes #12144
• teleport: handle disabled teleport with updateCssVars (#12113) (76a8223), closes #12112
• transition/ssr: make transition appear work with Suspense in SSR (#12047) (f1a4f67), closes #12046
• types: ensure this.$props type does not include string (#12123) (704173e), closes #12122
• types: retain union type narrowing with defaults applied (#12108) (05685a9), closes #12106
• useId: ensure useId consistency when using serverPrefetch (#12128) (b4d3534), closes #12102
• watch: watchEffect clean-up with SSR (#12097) (b094c72), closes #11956

Performance Improvements

• reactivity: avoid unnecessary recursion in removeSub (#12135) (ec917cf)

Bug Fixes

• compiler-sfc: do not skip TSSatisfiesExpression when transforming props destructure (#12062) (2328b05), closes #12061
• reactivity: prevent overwriting next property during batch processing (#12075) (d3f5e6e), closes #12072
• scheduler: job ordering when the post queue is flushing (#12090) (577edca)
• types: correctly infer TypeProps when it is any (#12073) (57315ab), closes #12058
• types: should not intersect PublicProps with Props (#12077) (6f85894)
• types: infer the first generic type of Ref correctly (#12094) (c97bb84)

Bug Fixes

• custom-element: properly set kebab-case props on Vue custom elements (ea3efa0), closes #12030 #12032
• reactivity: fix nested batch edge case (93c95dd)
• reactivity: only clear notified flags for computed in first batch iteration (aa9ef23), closes #12045
• types/ref: handle nested refs in UnwrapRef (#12049) (e2c19c2), closes #12044

Bug Fixes

• reactivity: fix property dep removal regression (6001e5c), closes #12020 #12021
• reactivity: fix recursive sync watcher on computed edge case (10ff159), closes #12033 #12037
• runtime-core: avoid rendering plain object as VNode (#12038) (cb34b28), closes #12035 vitejs/vite-plugin-vue#353
• runtime-core: make useId() always return a string (a177092)
• types: correct type inference of union event names (#12022) (4da6881)
• vue: properly cache runtime compilation (#12019) (fa0ba24)

Bug Fixes

• reactivity: do not remove dep from depsMap when cleaning up deps of computed (#11995) (0267a58)

Bug Fixes

• compile-core: fix v-model with newlines edge case (#11960) (6224288), closes #8306
• compiler-sfc: initialize scope with null prototype object (#11963) (215e154)
• hydration: avoid observing non-Element node (#11954) (7257e6a), closes #11952
• reactivity: do not remove dep from depsMap when unsubbed by computed (960706e)
• reactivity: fix dev-only memory leak by updating dep.subsHead on sub removal (5c8b76e), closes #11956
• reactivity: fix memory leak from dep instances of garbage collected objects (235ea47), closes #11979 #11971
• reactivity: fix triggerRef call on ObjectRefImpl returned by toRef (#11986) (b030c8b), closes #11982
• scheduler: ensure recursive jobs can't be queued twice (#11955) (d18d6aa)
• ssr: don't render comments in TransitionGroup (#11961) (a2f6ede), closes #11958
• transition: respect duration setting even when it is 0 (#11967) (f927a4a)
• types: correct type inference of all-optional props (#11644) (9eca65e), closes #11733 vuejs/language-tools#4704

Performance Improvements

• hydration: avoid observer if element is in viewport (#11639) (e075dfa)

Bug Fixes

• compile-dom: should be able to stringify mathML (#11891) (85c138c)
• compiler-sfc: preserve old behavior when using withDefaults with destructure (8492c3c), closes #11930
• reactivity: avoid exponential perf cost and reduce call stack depth for deeply chained computeds (#11944) (c74bb8c), closes #11928
• reactivity: rely on dirty check only when computed has deps (#11931) (aa5dafd), closes #11929
• watch: once option should be ignored by watchEffect (#11884) (49fa673)
• watch: unwatch should be callable during SSR (#11925) (2d6adf7), closes #11924

Bug Fixes

• compiler-core: fix handling of delimiterOpen in VPre (#11915) (706d4ac), closes #11913
• compiler-dom: fix stringify static edge for partially eligible chunks in cached parent (1d99d61), closes #11879 #11890
• compiler-dom: should ignore leading newline in <textarea> per spec (3c4bf76)
• compiler-sfc: nested css supports atrule and comment (#11899) (0e7bc71), closes #11896
• custom-element: handle nested customElement mount w/ shadowRoot false (#11861) (f2d8019), closes #11851 #11871
• hmr: reload async child wrapped in Suspense + KeepAlive (#11907) (10a2c60), closes #11868
• hydration: fix mismatch of leading newline in <textarea> and <pre> (a5f3c2e), closes #11873 #11874
• reactivity: properly clean up deps, fix memory leak (8ea5d6d), closes #11901
• runtime-core: properly update async component nested in KeepAlive (#11917) (7fe6c79), closes #11916
• TransitionGroup: not warn unkeyed text children with whitespece preserve (#11888) (7571f20), closes #11885

Bug Fixes

• compiler-sfc: correct scoped injection for nesting selector (#11854) (b1de75e), closes #10567
• reactivity: fix markRaw error on already marked object (#11864) (67d6596), closes #11862
• Revert "fix: Revert "fix(reactivity): self-referencing computed should refresh"" (e596378)
• runtime-core: handle shallow reactive arrays in renderList correctly (#11870) (ced59ab), closes #11869
• types: correctly infer TypeEmits with both tuple and function syntax (#11840) (dad6738), closes #11836

Performance Improvements

• reactivity: trigger deps directly instead of storing in an array first (#11695) (f80d447)

Bug Fixes

• hydration: check __asyncHydrate presence for vue3-lazy-hydration compat (#11825) (8e6c337), closes #11793
• Revert "fix(reactivity): self-referencing computed should refresh" (35c760f)
• ssr: respect app.config.warnHandler during ssr (bf3d9a2), closes #11830
• Transition: handle KeepAlive child unmount in Transition out-in mode (#11833) (6b7901d), closes #11775
• useId: make generated IDs selector compatible (babfb4c), closes #11828

Bug Fixes

• reactivity: make toRaw work on proxies created by proxyRef (46c3ab1)
• reactivity: pass oldValue to computed getter (#11813) (98864a7), closes #11812
• reactivity: prevent endless recursion in computed getters (#11797) (716275d)
• reactivity: self-referencing computed should refresh (e84c4a6), closes /github.com/vuejs/core/pull/11797#issuecomment-2330738633
• scheduler: prevent duplicate jobs being queued (#11826) (df56cc5), closes #11712 #11807
• suspense: avoid updating anchor if activeBranch has not been rendered to the actual container (#11818) (3c0d531), closes #11806
• Transition: handle KeepAlive child unmount in Transition out-in mode (#11778) (3116553), closes #11775
• types: add HTMLDialogElement missing close event (#11811) (3634f7a)
• types: added name attribute support to details tag (#11823) (c74176e), closes #11821
• types: fix defineComponent props inference when setup() has explicit annotation (fca20a3), closes #11803
• useTemplateRef: properly fix readonly warning in dev and ensure prod behavior consistency (9b7797d), closes #11808 #11816 #11810

Features

• compiler-core: parse modifiers as expression to provide location data (#11819) (3f13203)

Bug Fixes

• build: improve built-in components treeshakability (4eee630)
• reactivity: handle non-array arguments in reactive concat method (#11794) (475977a), closes #11792
• Transition: avoid applying transition hooks on comment vnode (#11788) (51912f8), closes #11782
• types: avoid using intersection type in Readonly<...> to fix JSDoc emit (#11799) (7518bc1)
• useTemplateRef: fix readonly warning when useTemplateRef has same variable name as template ref (bc63df0), closes #11795 #11802 #11804

3.5.0 (2024-09-03)