Merge branch 'main' into fix/8466

.github/renovate.json5

@@ -1,18 +1,17 @@
 {
   $schema: 'https://docs.renovatebot.com/renovate-schema.json',
-  extends: ['config:base', 'schedule:weekly', 'group:allNonMajor'],
+  extends: ['config:recommended', 'schedule:weekly', 'group:allNonMajor'],
   labels: ['dependencies'],
   ignorePaths: ['**/__tests__/**'],
   rangeStrategy: 'bump',
   packageRules: [
     {
-      depTypeList: ['peerDependencies'],
+      matchDepTypes: ['peerDependencies'],
       enabled: false,
     },
     {
       groupName: 'test',
-      matchPackageNames: ['vitest', 'jsdom', 'puppeteer'],
+      matchPackageNames: ['vitest', 'jsdom', 'puppeteer', '@vitest{/,}**'],
-      matchPackagePrefixes: ['@vitest'],
     },
     {
       groupName: 'playground',
@@ -23,18 +22,28 @@
     },
     {
       groupName: 'compiler',
-      matchPackageNames: ['magic-string'],
+      matchPackageNames: ['magic-string', '@babel{/,}**', 'postcss{/,}**'],
-      matchPackagePrefixes: ['@babel', 'postcss'],
     },
     {
       groupName: 'build',
-      matchPackageNames: ['vite', '@swc/core'],
+      matchPackageNames: [
-      matchPackagePrefixes: ['rollup', 'esbuild', '@rollup', '@vitejs'],
+        'vite',
+        '@swc/core',
+        'rollup{/,}**',
+        'esbuild{/,}**',
+        '@rollup{/,}**',
+        '@vitejs{/,}**',
+      ],
     },
     {
       groupName: 'lint',
-      matchPackageNames: ['simple-git-hooks', 'lint-staged'],
+      matchPackageNames: [
-      matchPackagePrefixes: ['typescript-eslint', 'eslint', 'prettier'],
+        'simple-git-hooks',
+        'lint-staged',
+        'typescript-eslint{/,}**',
+        'eslint{/,}**',
+        'prettier{/,}**',
+      ],
     },
   ],
   ignoreDeps: [

.github/workflows/autofix.yml

@@ -31,4 +31,4 @@ jobs:
       - name: Run prettier
         run: pnpm run format
 
-      - uses: autofix-ci/action@ff86a557419858bb967097bfc916833f5647fa8c
+      - uses: autofix-ci/action@551dded8c6cc8a1054039c8bc0b8b48c51dfc6ef

.github/workflows/size-report.yml

@@ -37,7 +37,7 @@ jobs:
         run: pnpm install
 
       - name: Download Size Data
-        uses: dawidd6/action-download-artifact@v6
+        uses: dawidd6/action-download-artifact@v7
         with:
           name: size-data
           run_id: ${{ github.event.workflow_run.id }}
@@ -56,7 +56,7 @@ jobs:
           path: temp/size/base.txt
 
       - name: Download Previous Size Data
-        uses: dawidd6/action-download-artifact@v6
+        uses: dawidd6/action-download-artifact@v7
         with:
           branch: ${{ steps.pr-base.outputs.content }}
           workflow: size-data.yml

.vscode/settings.json

@@ -13,5 +13,6 @@
   },
   "[json]": {
     "editor.defaultFormatter": "esbenp.prettier-vscode"
-  }
+  },
+  "editor.formatOnSave": true
 }

.well-known/funding-manifest-urls

@@ -0,0 +1 @@
+https://vuejs.org/funding.json

CHANGELOG.md

@@ -1,3 +1,67 @@
+## [3.5.13](https://github.com/vuejs/core/compare/v3.5.12...v3.5.13) (2024-11-15)
+
+
+### Bug Fixes
+
+* **compiler-core:** handle v-memo + v-for with functional key ([#12014](https://github.com/vuejs/core/issues/12014)) ([99009ee](https://github.com/vuejs/core/commit/99009eee0efc238392daba93792d478525b21afa)), closes [#12013](https://github.com/vuejs/core/issues/12013)
+* **compiler-dom:** properly stringify template string style ([#12392](https://github.com/vuejs/core/issues/12392)) ([2d78539](https://github.com/vuejs/core/commit/2d78539da35322aea5f821b3cf9b02d006abac72)), closes [#12391](https://github.com/vuejs/core/issues/12391)
+* **custom-element:** avoid triggering mutationObserver when relecting props ([352bc88](https://github.com/vuejs/core/commit/352bc88c1bd2fda09c61ab17ea1a5967ffcd7bc0)), closes [#12214](https://github.com/vuejs/core/issues/12214) [#12215](https://github.com/vuejs/core/issues/12215)
+* **deps:** update dependency postcss to ^8.4.48 ([#12356](https://github.com/vuejs/core/issues/12356)) ([b5ff930](https://github.com/vuejs/core/commit/b5ff930089985a58c3553977ef999cec2a6708a4))
+* **hydration:** the component vnode's el should be updated when a mismatch occurs. ([#12255](https://github.com/vuejs/core/issues/12255)) ([a20a4cb](https://github.com/vuejs/core/commit/a20a4cb36a3e717d1f8f259d0d59f133f508ff0a)), closes [#12253](https://github.com/vuejs/core/issues/12253)
+* **reactiivty:** avoid unnecessary watcher effect removal from inactive scope ([2193284](https://github.com/vuejs/core/commit/21932840eae72ffcd357a62ec596aaecc7ec224a)), closes [#5783](https://github.com/vuejs/core/issues/5783) [#5806](https://github.com/vuejs/core/issues/5806)
+* **reactivity:** release nested effects/scopes on effect scope stop ([#12373](https://github.com/vuejs/core/issues/12373)) ([bee2f5e](https://github.com/vuejs/core/commit/bee2f5ee62dc0cd04123b737779550726374dd0a)), closes [#12370](https://github.com/vuejs/core/issues/12370)
+* **runtime-dom:** set css vars before user onMounted hooks ([2d5c5e2](https://github.com/vuejs/core/commit/2d5c5e25e9b7a56e883674fb434135ac514429b5)), closes [#11533](https://github.com/vuejs/core/issues/11533)
+* **runtime-dom:** set css vars on update to handle child forcing reflow in onMount ([#11561](https://github.com/vuejs/core/issues/11561)) ([c4312f9](https://github.com/vuejs/core/commit/c4312f9c715c131a09e552ba46e9beb4b36d55e6))
+* **ssr:** avoid updating subtree of async component if it is resolved ([#12363](https://github.com/vuejs/core/issues/12363)) ([da7ad5e](https://github.com/vuejs/core/commit/da7ad5e3d24f3e108401188d909d27a4910da095)), closes [#12362](https://github.com/vuejs/core/issues/12362)
+* **ssr:** ensure v-text updates correctly with custom directives in SSR output ([#12311](https://github.com/vuejs/core/issues/12311)) ([1f75d4e](https://github.com/vuejs/core/commit/1f75d4e6dfe18121ebe443cd3e8105d54f727893)), closes [#12309](https://github.com/vuejs/core/issues/12309)
+* **ssr:** handle initial selected state for select with v-model + v-for option ([#12399](https://github.com/vuejs/core/issues/12399)) ([4f8d807](https://github.com/vuejs/core/commit/4f8d8078221ee52deed266677a227ad2a6d8dd22)), closes [#12395](https://github.com/vuejs/core/issues/12395)
+* **teleport:** handle deferred teleport update before mounted ([#12168](https://github.com/vuejs/core/issues/12168)) ([8bff142](https://github.com/vuejs/core/commit/8bff142f99b646e9dd15897ec75368fbf34f1534)), closes [#12161](https://github.com/vuejs/core/issues/12161)
+* **templateRef:** set ref on cached async component which wrapped in KeepAlive ([#12290](https://github.com/vuejs/core/issues/12290)) ([983eb50](https://github.com/vuejs/core/commit/983eb50a17eac76f1bba4394ad0316c62b72191d)), closes [#4999](https://github.com/vuejs/core/issues/4999) [#5004](https://github.com/vuejs/core/issues/5004)
+* **test:** update snapshot ([#12169](https://github.com/vuejs/core/issues/12169)) ([828d4a4](https://github.com/vuejs/core/commit/828d4a443919fa2aa4e2e92fbd03a5f04b258eea))
+* **Transition:** fix transition memory leak edge case ([#12182](https://github.com/vuejs/core/issues/12182)) ([660132d](https://github.com/vuejs/core/commit/660132df6c6a8c14bf75e593dc47d2fdada30322)), closes [#12181](https://github.com/vuejs/core/issues/12181)
+* **transition:** reflow before leave-active class after leave-from ([#12288](https://github.com/vuejs/core/issues/12288)) ([4b479db](https://github.com/vuejs/core/commit/4b479db61d233b054561402ae94ef08550073ea1)), closes [#2593](https://github.com/vuejs/core/issues/2593)
+* **types:** defineEmits w/ interface declaration ([#12343](https://github.com/vuejs/core/issues/12343)) ([1022eab](https://github.com/vuejs/core/commit/1022eabaa1aaf8436876f5ec5573cb1e4b3959a6)), closes [#8457](https://github.com/vuejs/core/issues/8457)
+* **v-once:** setting hasOnce to current block only when in v-once ([#12374](https://github.com/vuejs/core/issues/12374)) ([37300fc](https://github.com/vuejs/core/commit/37300fc26190a7299efddbf98800ffd96d5cad96)), closes [#12371](https://github.com/vuejs/core/issues/12371)
+
+
+### Performance Improvements
+
+* **reactivity:** do not track inner key `__v_skip`` ([#11690](https://github.com/vuejs/core/issues/11690)) ([d637bd6](https://github.com/vuejs/core/commit/d637bd6c0164c2883e6eabd3c2f1f8c258dedfb1))
+* **runtime-core:** use feature flag for call to resolveMergedOptions ([#12163](https://github.com/vuejs/core/issues/12163)) ([1755ac0](https://github.com/vuejs/core/commit/1755ac0a108ba3486bd8397e56d3bdcd69196594))
+
+
+
+## [3.5.12](https://github.com/vuejs/core/compare/v3.5.11...v3.5.12) (2024-10-11)
+
+
+### Bug Fixes
+
+* **compiler-dom:** avoid stringify option with null value ([#12096](https://github.com/vuejs/core/issues/12096)) ([f6d9926](https://github.com/vuejs/core/commit/f6d99262364b7444ebab8742158599e8cdd79eaa)), closes [#12093](https://github.com/vuejs/core/issues/12093)
+* **compiler-sfc:**  do not skip TSInstantiationExpression when transforming props destructure ([#12064](https://github.com/vuejs/core/issues/12064)) ([d3ecde8](https://github.com/vuejs/core/commit/d3ecde8a696ff62c8d0ab067fd1d7ee0565b63c5))
+* **compiler-sfc:** use sass modern api if available and avoid deprecation warning ([#11992](https://github.com/vuejs/core/issues/11992)) ([4474c11](https://github.com/vuejs/core/commit/4474c113d1fb1c26298dd6794275d5b5c7cc4d93))
+* **compiler:** clone loc to `ifNode` ([#12131](https://github.com/vuejs/core/issues/12131)) ([cde2c06](https://github.com/vuejs/core/commit/cde2c0671b00d4f6111fcbd7aa76e45872f20b0c)), closes [vuejs/language-tools#4911](https://github.com/vuejs/language-tools/issues/4911)
+* **custom-element:** properly remove hyphenated attribute ([#12143](https://github.com/vuejs/core/issues/12143)) ([e16e9a7](https://github.com/vuejs/core/commit/e16e9a7341e7cfb3c443da4e5e5b06e8158712c3)), closes [#12139](https://github.com/vuejs/core/issues/12139)
+* **defineModel:** handle kebab-case model correctly ([#12063](https://github.com/vuejs/core/issues/12063)) ([c0418a3](https://github.com/vuejs/core/commit/c0418a3b8fa96a0b108ab71b7aab5d3388f90557)), closes [#12060](https://github.com/vuejs/core/issues/12060)
+* **deps:** update dependency monaco-editor to ^0.52.0 ([#12119](https://github.com/vuejs/core/issues/12119)) ([f7cbea2](https://github.com/vuejs/core/commit/f7cbea2111c7770a180b640f36f6a5d4d6abc698))
+* **hydration:** provide compat fallback for idle callback hydration strategy ([#11935](https://github.com/vuejs/core/issues/11935)) ([1ae545a](https://github.com/vuejs/core/commit/1ae545a3786abef983be1c969726489685569c92))
+* **reactivity:** trigger reactivity for Map key `undefined` ([#12055](https://github.com/vuejs/core/issues/12055)) ([7ad289e](https://github.com/vuejs/core/commit/7ad289e1e7fea654524008ff91e43a8b8a55ef22)), closes [#12054](https://github.com/vuejs/core/issues/12054)
+* **runtime-core:** allow symbol values for slot prop key ([#12069](https://github.com/vuejs/core/issues/12069)) ([d9d4d4e](https://github.com/vuejs/core/commit/d9d4d4e158cd51a9ddda249f29de8467f60b2792)), closes [#12068](https://github.com/vuejs/core/issues/12068)
+* **runtime-core:** fix required prop check false positive for kebab-case edge cases  ([#12034](https://github.com/vuejs/core/issues/12034)) ([9da1ac1](https://github.com/vuejs/core/commit/9da1ac156552ac449754e1373aac7e349841becb)), closes [#12011](https://github.com/vuejs/core/issues/12011)
+* **runtime-dom:** prevent unnecessary updates in v-model checkbox when value is unchanged ([#12146](https://github.com/vuejs/core/issues/12146)) ([ea943af](https://github.com/vuejs/core/commit/ea943afe404c4ca4b729906c5e8daf7aa2ccde9b)), closes [#12144](https://github.com/vuejs/core/issues/12144)
+* **teleport:** handle disabled teleport with updateCssVars ([#12113](https://github.com/vuejs/core/issues/12113)) ([76a8223](https://github.com/vuejs/core/commit/76a8223199c148b79a5c0ea19e235164809760cd)), closes [#12112](https://github.com/vuejs/core/issues/12112)
+* **transition/ssr:** make transition appear work with Suspense in SSR ([#12047](https://github.com/vuejs/core/issues/12047)) ([f1a4f67](https://github.com/vuejs/core/commit/f1a4f67aedfe83e440c54222213f070774faa421)), closes [#12046](https://github.com/vuejs/core/issues/12046)
+* **types:** ensure `this.$props` type does not include `string` ([#12123](https://github.com/vuejs/core/issues/12123)) ([704173e](https://github.com/vuejs/core/commit/704173e24276706de672cca6c9507e4dd9651197)), closes [#12122](https://github.com/vuejs/core/issues/12122)
+* **types:** retain union type narrowing with defaults applied ([#12108](https://github.com/vuejs/core/issues/12108)) ([05685a9](https://github.com/vuejs/core/commit/05685a9d7c42d4cd37169b867833776b91154fed)), closes [#12106](https://github.com/vuejs/core/issues/12106)
+* **useId:** ensure useId consistency when using serverPrefetch ([#12128](https://github.com/vuejs/core/issues/12128)) ([b4d3534](https://github.com/vuejs/core/commit/b4d35349d8bc39aa15bd3f1094d230e5928b177c)), closes [#12102](https://github.com/vuejs/core/issues/12102)
+* **watch:** watchEffect clean-up with SSR ([#12097](https://github.com/vuejs/core/issues/12097)) ([b094c72](https://github.com/vuejs/core/commit/b094c72b3d40c52c7124f145a9db028509a11202)), closes [#11956](https://github.com/vuejs/core/issues/11956)
+
+
+### Performance Improvements
+
+* **reactivity:** avoid unnecessary recursion in removeSub ([#12135](https://github.com/vuejs/core/issues/12135)) ([ec917cf](https://github.com/vuejs/core/commit/ec917cfdb9d0169cd0835d3a0e28244242657dc9))
+
+
+
 ## [3.5.11](https://github.com/vuejs/core/compare/v3.5.10...v3.5.11) (2024-10-03)
 
 

changelogs/CHANGELOG-3.4.md

@@ -741,17 +741,6 @@ Note that this is a type-only breaking change in a minor release, which adheres
 
 
 
-## [3.3.13](https://github.com/vuejs/core/compare/v3.3.12...v3.3.13) (2023-12-19)
-
-
-### Bug Fixes
-
-* **compiler-core:** fix v-on with modifiers on inline expression of undefined ([#9866](https://github.com/vuejs/core/issues/9866)) ([bae79dd](https://github.com/vuejs/core/commit/bae79ddf8564a2da4a5365cfeb8d811990f42335)), closes [#9865](https://github.com/vuejs/core/issues/9865)
-* **runtime-dom:** cache event handlers by key/modifiers ([#9851](https://github.com/vuejs/core/issues/9851)) ([04d2c05](https://github.com/vuejs/core/commit/04d2c05054c26b02fbc1d84839b0ed5cd36455b6)), closes [#9849](https://github.com/vuejs/core/issues/9849)
-* **types:** extract properties from extended collections ([#9854](https://github.com/vuejs/core/issues/9854)) ([24b1c1d](https://github.com/vuejs/core/commit/24b1c1dd57fd55d998aa231a147500e010b10219)), closes [#9852](https://github.com/vuejs/core/issues/9852)
-
-
-
 # [3.4.0-beta.3](https://github.com/vuejs/core/compare/v3.3.12...v3.4.0-beta.3) (2023-12-16)
 
 
@@ -764,19 +753,6 @@ Note that this is a type-only breaking change in a minor release, which adheres
 
 
 
-## [3.3.12](https://github.com/vuejs/core/compare/v3.3.11...v3.3.12) (2023-12-16)
-
-### Bug Fixes
-
-* **hydration:** handle appear transition before patch props ([#9837](https://github.com/vuejs/core/issues/9837)) ([e70f4c4](https://github.com/vuejs/core/commit/e70f4c47c553b6e16d8fad70743271ca23802fe7)), closes [#9832](https://github.com/vuejs/core/issues/9832)
-* **sfc/cssVars:** fix loss of CSS v-bind variables when setting inline style with string value ([#9824](https://github.com/vuejs/core/issues/9824)) ([0a387df](https://github.com/vuejs/core/commit/0a387dfb1d04afb6eae4296b6da76dfdaca77af4)), closes [#9821](https://github.com/vuejs/core/issues/9821)
-* **ssr:** fix suspense hydration of fallback content ([#7188](https://github.com/vuejs/core/issues/7188)) ([60415b5](https://github.com/vuejs/core/commit/60415b5d67df55f1fd6b176615299c08640fa142))
-* **types:** add `xmlns:xlink` to `SVGAttributes` ([#9300](https://github.com/vuejs/core/issues/9300)) ([0d61b42](https://github.com/vuejs/core/commit/0d61b429ecf63591d31e09702058fa4c7132e1a7)), closes [#9299](https://github.com/vuejs/core/issues/9299)
-* **types:** fix `shallowRef` type error ([#9839](https://github.com/vuejs/core/issues/9839)) ([9a57158](https://github.com/vuejs/core/commit/9a571582b53220270e498d8712ea59312c0bef3a))
-* **types:** support for generic keyof slots ([#8374](https://github.com/vuejs/core/issues/8374)) ([213eba4](https://github.com/vuejs/core/commit/213eba479ce080efc1053fe636f6be4a4c889b44))
-
-
-
 # [3.4.0-beta.2](https://github.com/vuejs/core/compare/v3.4.0-beta.1...v3.4.0-beta.2) (2023-12-14)
 
 
@@ -836,22 +812,6 @@ default.
 
 
 
-## [3.3.11](https://github.com/vuejs/core/compare/v3.3.10...v3.3.11) (2023-12-08)
-
-
-### Bug Fixes
-
-* **custom-element:** correctly handle number type props in prod ([#8989](https://github.com/vuejs/core/issues/8989)) ([d74d364](https://github.com/vuejs/core/commit/d74d364d62db8e48881af6b5a75ce4fb5f36cc35))
-* **reactivity:** fix mutation on user proxy of reactive Array ([6ecbd5c](https://github.com/vuejs/core/commit/6ecbd5ce2a7f59314a8326a1d193874b87f4d8c8)), closes [#9742](https://github.com/vuejs/core/issues/9742) [#9751](https://github.com/vuejs/core/issues/9751) [#9750](https://github.com/vuejs/core/issues/9750)
-* **runtime-dom:** fix width and height prop check condition ([5b00286](https://github.com/vuejs/core/commit/5b002869c533220706f9788b496b8ca8d8e98609)), closes [#9762](https://github.com/vuejs/core/issues/9762)
-* **shared:** handle Map with symbol keys in toDisplayString ([#9731](https://github.com/vuejs/core/issues/9731)) ([364821d](https://github.com/vuejs/core/commit/364821d6bdb1775e2f55a69bcfb9f40f7acf1506)), closes [#9727](https://github.com/vuejs/core/issues/9727)
-* **shared:** handle more Symbol cases in toDisplayString ([983d45d](https://github.com/vuejs/core/commit/983d45d4f8eb766b5a16b7ea93b86d3c51618fa6))
-* **Suspense:** properly get anchor when mount fallback vnode ([#9770](https://github.com/vuejs/core/issues/9770)) ([b700328](https://github.com/vuejs/core/commit/b700328342e17dc16b19316c2e134a26107139d2)), closes [#9769](https://github.com/vuejs/core/issues/9769)
-* **types:** ref() return type should not be any when initial value is any ([#9768](https://github.com/vuejs/core/issues/9768)) ([cdac121](https://github.com/vuejs/core/commit/cdac12161ec27b45ded48854c3d749664b6d4a6d))
-* **watch:** should not fire pre watcher on child component unmount ([#7181](https://github.com/vuejs/core/issues/7181)) ([6784f0b](https://github.com/vuejs/core/commit/6784f0b1f8501746ea70d87d18ed63a62cf6b76d)), closes [#7030](https://github.com/vuejs/core/issues/7030)
-
-
-
 # [3.4.0-alpha.4](https://github.com/vuejs/core/compare/v3.3.10...v3.4.0-alpha.4) (2023-12-04)
 
 
@@ -873,37 +833,6 @@ default.
 
 
 
-## [3.3.10](https://github.com/vuejs/core/compare/v3.3.9...v3.3.10) (2023-12-04)
-
-
-### Bug Fixes
-
-* **app:** prevent template from being cached between apps with different options ([#9724](https://github.com/vuejs/core/issues/9724)) ([ec71585](https://github.com/vuejs/core/commit/ec715854ca12520b2afc9e9b3981cbae05ae5206)), closes [#9618](https://github.com/vuejs/core/issues/9618)
-* **compiler-sfc:** avoid passing forEach index to genMap ([f12db7f](https://github.com/vuejs/core/commit/f12db7fb564a534cef2e5805cc9f54afe5d72fbf))
-* **compiler-sfc:** deindent pug/jade templates ([6345197](https://github.com/vuejs/core/commit/634519720a21fb5a6871454e1cadad7053a568b8)), closes [#3231](https://github.com/vuejs/core/issues/3231) [#3842](https://github.com/vuejs/core/issues/3842) [#7723](https://github.com/vuejs/core/issues/7723)
-* **compiler-sfc:** fix :where and :is selector in scoped mode with multiple selectors ([#9735](https://github.com/vuejs/core/issues/9735)) ([c3e2c55](https://github.com/vuejs/core/commit/c3e2c556b532656b50b8ab5cd2d9eabc26622d63)), closes [#9707](https://github.com/vuejs/core/issues/9707)
-* **compiler-sfc:** generate more treeshaking friendly code ([#9507](https://github.com/vuejs/core/issues/9507)) ([8d74ca0](https://github.com/vuejs/core/commit/8d74ca0e6fa2738ca6854b7e879ff59419f948c7)), closes [#9500](https://github.com/vuejs/core/issues/9500)
-* **compiler-sfc:** support inferring generic types ([#8511](https://github.com/vuejs/core/issues/8511)) ([eb5e307](https://github.com/vuejs/core/commit/eb5e307c0be62002e62c4c800d0dfacb39b0d4ca)), closes [#8482](https://github.com/vuejs/core/issues/8482)
-* **compiler-sfc:** support resolving components from props ([#8785](https://github.com/vuejs/core/issues/8785)) ([7cbcee3](https://github.com/vuejs/core/commit/7cbcee3d831241a8bd3588ae92d3f27e3641e25f))
-* **compiler-sfc:** throw error when failing to load TS during type resolution ([#8883](https://github.com/vuejs/core/issues/8883)) ([4936d2e](https://github.com/vuejs/core/commit/4936d2e11a8d0ca3704bfe408548cb26bb3fd5e9))
-* **cssVars:** cssVar names should be double-escaped when generating code for ssr ([#8824](https://github.com/vuejs/core/issues/8824)) ([5199a12](https://github.com/vuejs/core/commit/5199a12f8855cd06f24bf355708b5a2134f63176)), closes [#7823](https://github.com/vuejs/core/issues/7823)
-* **deps:** update compiler to ^7.23.4 ([#9681](https://github.com/vuejs/core/issues/9681)) ([31f6ebc](https://github.com/vuejs/core/commit/31f6ebc4df84490ed29fb75e7bf4259200eb51f0))
-* **runtime-core:** Suspense get anchor properly in Transition ([#9309](https://github.com/vuejs/core/issues/9309)) ([65f3fe2](https://github.com/vuejs/core/commit/65f3fe273127a8b68e1222fbb306d28d85f01757)), closes [#8105](https://github.com/vuejs/core/issues/8105)
-* **runtime-dom:** set width/height with units as attribute ([#8781](https://github.com/vuejs/core/issues/8781)) ([bfc1838](https://github.com/vuejs/core/commit/bfc1838f31199de3f189198a3c234fa7bae91386))
-* **ssr:** avoid computed being accidentally cached before server render ([#9688](https://github.com/vuejs/core/issues/9688)) ([30d5d93](https://github.com/vuejs/core/commit/30d5d93a92b2154406ec04f8aca6b217fa01177c)), closes [#5300](https://github.com/vuejs/core/issues/5300)
-* **types:** expose emits as props in functional components ([#9234](https://github.com/vuejs/core/issues/9234)) ([887e54c](https://github.com/vuejs/core/commit/887e54c347ea9eac4c721b5e2288f054873d1d30))
-* **types:** fix reactive collection types ([#8960](https://github.com/vuejs/core/issues/8960)) ([ad27473](https://github.com/vuejs/core/commit/ad274737015c36906d76f3189203093fa3a2e4e7)), closes [#8904](https://github.com/vuejs/core/issues/8904)
-* **types:** improve return type withKeys and withModifiers ([#9734](https://github.com/vuejs/core/issues/9734)) ([43c3cfd](https://github.com/vuejs/core/commit/43c3cfdec5ae5d70fa2a21e857abc2d73f1a0d07))
-
-
-### Performance Improvements
-
-* optimize on* prop check ([38aaa8c](https://github.com/vuejs/core/commit/38aaa8c88648c54fe2616ad9c0961288092fcb44))
-* **runtime-dom:** cache modifier wrapper functions ([da4a4fb](https://github.com/vuejs/core/commit/da4a4fb5e8eee3c6d31f24ebd79a9d0feca56cb2)), closes [#8882](https://github.com/vuejs/core/issues/8882)
-* **v-on:** constant handlers with modifiers should not be treated as dynamic ([4d94ebf](https://github.com/vuejs/core/commit/4d94ebfe75174b340d2b794e699cad1add3600a9))
-
-
-
 # [3.4.0-alpha.3](https://github.com/vuejs/core/compare/v3.4.0-alpha.2...v3.4.0-alpha.3) (2023-11-28)
 
 
@@ -960,55 +889,6 @@ default.
 
 
 
-## [3.3.9](https://github.com/vuejs/core/compare/v3.3.8...v3.3.9) (2023-11-25)
-
-
-### Bug Fixes
-
-* **compiler-core:** avoid rewriting scope variables in inline for loops ([#7245](https://github.com/vuejs/core/issues/7245)) ([a2d810e](https://github.com/vuejs/core/commit/a2d810eb40cef631f61991ca68b426ee9546aba0)), closes [#7238](https://github.com/vuejs/core/issues/7238)
-* **compiler-core:** fix `resolveParserPlugins` decorators check ([#9566](https://github.com/vuejs/core/issues/9566)) ([9d0eba9](https://github.com/vuejs/core/commit/9d0eba916f3bf6fb5c03222400edae1a2db7444f)), closes [#9560](https://github.com/vuejs/core/issues/9560)
-* **compiler-sfc:** consistently escape type-only prop names ([#8654](https://github.com/vuejs/core/issues/8654)) ([3e08d24](https://github.com/vuejs/core/commit/3e08d246dfd8523c54fb8e7a4a6fd5506ffb1bcc)), closes [#8635](https://github.com/vuejs/core/issues/8635) [#8910](https://github.com/vuejs/core/issues/8910) [vitejs/vite-plugin-vue#184](https://github.com/vitejs/vite-plugin-vue/issues/184)
-* **compiler-sfc:** malformed filename on windows using path.posix.join() ([#9478](https://github.com/vuejs/core/issues/9478)) ([f18a174](https://github.com/vuejs/core/commit/f18a174979626b3429db93c5d5b7ae5448917c70)), closes [#8671](https://github.com/vuejs/core/issues/8671) [#9583](https://github.com/vuejs/core/issues/9583) [#9446](https://github.com/vuejs/core/issues/9446) [#9473](https://github.com/vuejs/core/issues/9473)
-* **compiler-sfc:** support `:is` and `:where` selector in scoped css rewrite ([#8929](https://github.com/vuejs/core/issues/8929)) ([3227e50](https://github.com/vuejs/core/commit/3227e50b32105f8893f7dff2f29278c5b3a9f621))
-* **compiler-sfc:** support resolve extends interface for defineEmits ([#8470](https://github.com/vuejs/core/issues/8470)) ([9e1b74b](https://github.com/vuejs/core/commit/9e1b74bcd5fa4151f5d1bc02c69fbbfa4762f577)), closes [#8465](https://github.com/vuejs/core/issues/8465)
-* **hmr/transition:** fix kept-alive component inside transition disappearing after hmr ([#7126](https://github.com/vuejs/core/issues/7126)) ([d11e978](https://github.com/vuejs/core/commit/d11e978fc98dcc83526c167e603b8308f317f786)), closes [#7121](https://github.com/vuejs/core/issues/7121)
-* **hydration:** force hydration for v-bind with .prop modifier ([364f319](https://github.com/vuejs/core/commit/364f319d214226770d97c98d8fcada80c9e8dde3)), closes [#7490](https://github.com/vuejs/core/issues/7490)
-* **hydration:** properly hydrate indeterminate prop ([34b5a5d](https://github.com/vuejs/core/commit/34b5a5da4ae9c9faccac237acd7acc8e7e017571)), closes [#7476](https://github.com/vuejs/core/issues/7476)
-* **reactivity:** clear method on readonly collections should return undefined ([#7316](https://github.com/vuejs/core/issues/7316)) ([657476d](https://github.com/vuejs/core/commit/657476dcdb964be4fbb1277c215c073f3275728e))
-* **reactivity:** onCleanup also needs to be cleaned ([#8655](https://github.com/vuejs/core/issues/8655)) ([73fd810](https://github.com/vuejs/core/commit/73fd810eebdd383a2b4629f67736c4db1f428abd)), closes [#5151](https://github.com/vuejs/core/issues/5151) [#7695](https://github.com/vuejs/core/issues/7695)
-* **ssr:** hydration `__vnode` missing for devtools ([#9328](https://github.com/vuejs/core/issues/9328)) ([5156ac5](https://github.com/vuejs/core/commit/5156ac5b38cfa80d3db26f2c9bf40cb22a7521cb))
-* **types:** allow falsy value types in `StyleValue` ([#7954](https://github.com/vuejs/core/issues/7954)) ([17aa92b](https://github.com/vuejs/core/commit/17aa92b79b31d8bb8b5873ddc599420cb9806db8)), closes [#7955](https://github.com/vuejs/core/issues/7955)
-* **types:** defineCustomElement using defineComponent return type with emits ([#7937](https://github.com/vuejs/core/issues/7937)) ([5d932a8](https://github.com/vuejs/core/commit/5d932a8e6d14343c9d7fc7c2ecb58ac618b2f938)), closes [#7782](https://github.com/vuejs/core/issues/7782)
-* **types:** fix `unref` and `toValue` when input union type contains ComputedRef ([#8748](https://github.com/vuejs/core/issues/8748)) ([176d476](https://github.com/vuejs/core/commit/176d47671271b1abc21b1508e9a493c7efca6451)), closes [#8747](https://github.com/vuejs/core/issues/8747) [#8857](https://github.com/vuejs/core/issues/8857)
-* **types:** fix instance type when props type is incompatible with setup returned type ([#7338](https://github.com/vuejs/core/issues/7338)) ([0e1e8f9](https://github.com/vuejs/core/commit/0e1e8f919e5a74cdaadf9c80ee135088b25e7fa3)), closes [#5885](https://github.com/vuejs/core/issues/5885)
-* **types:** fix shallowRef return type with union value type ([#7853](https://github.com/vuejs/core/issues/7853)) ([7c44800](https://github.com/vuejs/core/commit/7c448000b0def910c2cfabfdf7ff20a3d6bc844f)), closes [#7852](https://github.com/vuejs/core/issues/7852)
-* **types:** more precise types for class bindings ([#8012](https://github.com/vuejs/core/issues/8012)) ([46e3374](https://github.com/vuejs/core/commit/46e33744c890bd49482c5e5c5cdea44e00ec84d5))
-* **types:** remove optional properties from defineProps return type ([#6421](https://github.com/vuejs/core/issues/6421)) ([94c049d](https://github.com/vuejs/core/commit/94c049d930d922069e38ea8700d7ff0970f71e61)), closes [#6420](https://github.com/vuejs/core/issues/6420)
-* **types:** return type of withDefaults should be readonly ([#8601](https://github.com/vuejs/core/issues/8601)) ([f15debc](https://github.com/vuejs/core/commit/f15debc01acb22d23f5acee97e6f02db88cef11a))
-* **types:** revert class type restrictions ([5d077c8](https://github.com/vuejs/core/commit/5d077c8754cc14f85d2d6d386df70cf8c0d93842)), closes [#8012](https://github.com/vuejs/core/issues/8012)
-* **types:** update jsx type definitions ([#8607](https://github.com/vuejs/core/issues/8607)) ([58e2a94](https://github.com/vuejs/core/commit/58e2a94871ae06a909c5f8bad07fb401193e6a38))
-* **types:** widen ClassValue type ([2424013](https://github.com/vuejs/core/commit/242401305944422d0c361b16101a4d18908927af))
-* **v-model:** avoid overwriting number input with same value ([#7004](https://github.com/vuejs/core/issues/7004)) ([40f4b77](https://github.com/vuejs/core/commit/40f4b77bb570868cb6e47791078767797e465989)), closes [#7003](https://github.com/vuejs/core/issues/7003)
-* **v-model:** unnecessary value binding error should apply to dynamic instead of static binding ([2859b65](https://github.com/vuejs/core/commit/2859b653c9a22460e60233cac10fe139e359b046)), closes [#3596](https://github.com/vuejs/core/issues/3596)
-
-
-
-## [3.3.8](https://github.com/vuejs/core/compare/v3.3.7...v3.3.8) (2023-11-06)
-
-
-### Bug Fixes
-
-* **compile-sfc:** support `Error` type in `defineProps` ([#5955](https://github.com/vuejs/core/issues/5955)) ([a989345](https://github.com/vuejs/core/commit/a9893458ec519aae442e1b99e64e6d74685cd22c))
-* **compiler-core:** known global should be shadowed by local variables in expression rewrite ([#9492](https://github.com/vuejs/core/issues/9492)) ([a75d1c5](https://github.com/vuejs/core/commit/a75d1c5c6242e91a73cc5ba01e6da620dea0b3d9)), closes [#9482](https://github.com/vuejs/core/issues/9482)
-* **compiler-sfc:** fix dynamic directive arguments usage check for slots ([#9495](https://github.com/vuejs/core/issues/9495)) ([b39fa1f](https://github.com/vuejs/core/commit/b39fa1f8157647859331ce439c42ae016a49b415)), closes [#9493](https://github.com/vuejs/core/issues/9493)
-* **deps:** update dependency @vue/repl to ^2.6.2 ([#9536](https://github.com/vuejs/core/issues/9536)) ([5cef325](https://github.com/vuejs/core/commit/5cef325f41e3b38657c72fa1a38dedeee1c7a60a))
-* **deps:** update dependency @vue/repl to ^2.6.3 ([#9540](https://github.com/vuejs/core/issues/9540)) ([176d590](https://github.com/vuejs/core/commit/176d59058c9aecffe9da4d4311e98496684f06d4))
-* **hydration:** fix tagName access error on comment/text node hydration mismatch ([dd8a0cf](https://github.com/vuejs/core/commit/dd8a0cf5dcde13d2cbd899262a0e07f16e14e489)), closes [#9531](https://github.com/vuejs/core/issues/9531)
-* **types:** avoid exposing lru-cache types in generated dts ([462aeb3](https://github.com/vuejs/core/commit/462aeb3b600765e219ded2ee9a0ed1e74df61de0)), closes [#9521](https://github.com/vuejs/core/issues/9521)
-* **warn:** avoid warning on empty children with Suspense ([#3962](https://github.com/vuejs/core/issues/3962)) ([405f345](https://github.com/vuejs/core/commit/405f34587a63a5f1e3d147b9848219ea98acc22d))
-
-
-
 # [3.4.0-alpha.1](https://github.com/vuejs/core/compare/v3.3.7...v3.4.0-alpha.1) (2023-10-28)
 
 

package.json

@@ -1,7 +1,7 @@
 {
   "private": true,
-  "version": "3.5.11",
+  "version": "3.5.13",
-  "packageManager": "pnpm@9.12.0",
+  "packageManager": "pnpm@9.15.3",
   "type": "module",
   "scripts": {
     "dev": "node scripts/dev.js",
@@ -22,7 +22,10 @@
     "test-dts": "run-s build-dts test-dts-only",
     "test-dts-only": "tsc -p packages-private/dts-built-test/tsconfig.json && tsc -p ./packages-private/dts-test/tsconfig.test.json",
     "test-coverage": "vitest run --project unit --coverage",
-    "test-bench": "vitest bench",
+    "prebench": "node scripts/build.js -pf esm-browser reactivity",
+    "prebench-compare": "node scripts/build.js -pf esm-browser reactivity",
+    "bench": "vitest bench --project=unit --outputJson=temp/bench.json",
+    "bench-compare": "vitest bench --project=unit --compare=temp/bench.json",
     "release": "node scripts/release.js",
     "changelog": "conventional-changelog -p angular -i CHANGELOG.md -s",
     "dev-esm": "node scripts/dev.js -if esm-bundler-runtime",
@@ -62,52 +65,52 @@
     "@babel/parser": "catalog:",
     "@babel/types": "catalog:",
     "@rollup/plugin-alias": "^5.1.1",
-    "@rollup/plugin-commonjs": "^28.0.0",
+    "@rollup/plugin-commonjs": "^28.0.2",
     "@rollup/plugin-json": "^6.1.0",
-    "@rollup/plugin-node-resolve": "^15.3.0",
+    "@rollup/plugin-node-resolve": "^16.0.0",
     "@rollup/plugin-replace": "5.0.4",
-    "@swc/core": "^1.7.28",
+    "@swc/core": "^1.10.7",
     "@types/hash-sum": "^1.0.2",
-    "@types/node": "^20.16.10",
+    "@types/node": "^22.10.5",
     "@types/semver": "^7.5.8",
     "@types/serve-handler": "^6.1.4",
-    "@vitest/coverage-v8": "^2.1.1",
+    "@vitest/coverage-v8": "^2.1.8",
     "@vue/consolidate": "1.0.0",
     "conventional-changelog-cli": "^5.0.0",
     "enquirer": "^2.4.1",
-    "esbuild": "^0.24.0",
+    "esbuild": "^0.24.2",
     "esbuild-plugin-polyfill-node": "^0.3.0",
-    "eslint": "^9.12.0",
+    "eslint": "^9.18.0",
-    "eslint-plugin-import-x": "^4.3.1",
+    "eslint-plugin-import-x": "^4.6.1",
-    "@vitest/eslint-plugin": "^1.0.1",
+    "@vitest/eslint-plugin": "^1.1.25",
     "estree-walker": "catalog:",
-    "jsdom": "^25.0.0",
+    "jsdom": "^26.0.0",
-    "lint-staged": "^15.2.10",
+    "lint-staged": "^15.3.0",
     "lodash": "^4.17.21",
-    "magic-string": "^0.30.11",
+    "magic-string": "^0.30.17",
-    "markdown-table": "^3.0.3",
+    "markdown-table": "^3.0.4",
     "marked": "13.0.3",
-    "npm-run-all2": "^6.2.3",
+    "npm-run-all2": "^7.0.2",
-    "picocolors": "^1.1.0",
+    "picocolors": "^1.1.1",
-    "prettier": "^3.3.3",
+    "prettier": "^3.4.2",
     "pretty-bytes": "^6.1.1",
     "pug": "^3.0.3",
-    "puppeteer": "~23.3.0",
+    "puppeteer": "~24.0.0",
     "rimraf": "^6.0.1",
-    "rollup": "^4.24.0",
+    "rollup": "^4.30.1",
     "rollup-plugin-dts": "^6.1.1",
     "rollup-plugin-esbuild": "^6.1.1",
     "rollup-plugin-polyfill-node": "^0.13.0",
     "semver": "^7.6.3",
-    "serve": "^14.2.3",
+    "serve": "^14.2.4",
-    "serve-handler": "^6.1.5",
+    "serve-handler": "^6.1.6",
     "simple-git-hooks": "^2.11.1",
     "todomvc-app-css": "^2.4.3",
-    "tslib": "^2.7.0",
+    "tslib": "^2.8.1",
     "typescript": "~5.6.2",
-    "typescript-eslint": "^8.8.0",
+    "typescript-eslint": "^8.19.1",
     "vite": "catalog:",
-    "vitest": "^2.1.1"
+    "vitest": "^2.1.8"
   },
   "pnpm": {
     "peerDependencyRules": {

packages-private/dts-test/defineComponent.test-d.tsx

@@ -2068,3 +2068,13 @@ expectString(instance.actionText)
 // public prop on $props should be optional
 // @ts-expect-error
 expectString(instance.$props.actionText)
+
+// #12122
+defineComponent({
+  props: { foo: String },
+  render() {
+    expectType<{ readonly foo?: string }>(this.$props)
+    // @ts-expect-error
+    expectType<string>(this.$props)
+  },
+})

packages-private/dts-test/setupHelpers.test-d.ts

@@ -240,6 +240,23 @@ describe('withDefaults w/ defineProp type is different from the defaults type',
   res1.value
 })
 
+describe('withDefaults w/ defineProp discriminate union type', () => {
+  const props = withDefaults(
+    defineProps<
+      { type: 'button'; buttonType?: 'submit' } | { type: 'link'; href: string }
+    >(),
+    {
+      type: 'button',
+    },
+  )
+  if (props.type === 'button') {
+    expectType<'submit' | undefined>(props.buttonType)
+  }
+  if (props.type === 'link') {
+    expectType<string>(props.href)
+  }
+})
+
 describe('defineProps w/ runtime declaration', () => {
   // runtime declaration
   const props = defineProps({
@@ -289,6 +306,14 @@ describe('defineEmits w/ type declaration', () => {
   emit2('baz')
 })
 
+describe('defineEmits w/ interface declaration', () => {
+  interface Emits {
+    foo: [value: string]
+  }
+  const emit = defineEmits<Emits>()
+  emit('foo', 'hi')
+})
+
 describe('defineEmits w/ alt type declaration', () => {
   const emit = defineEmits<{
     foo: [id: string]

packages-private/sfc-playground/package.json

@@ -13,7 +13,7 @@
     "vite": "catalog:"
   },
   "dependencies": {
-    "@vue/repl": "^4.4.2",
+    "@vue/repl": "^4.4.3",
     "file-saver": "^2.0.5",
     "jszip": "^3.10.1",
     "vue": "workspace:*"

packages-private/sfc-playground/src/App.vue

@@ -123,6 +123,7 @@ onMounted(() => {
     :prod="productionMode"
     :ssr="useSSRMode"
     :autoSave="autoSave"
+    :theme="theme"
     @toggle-theme="toggleTheme"
     @toggle-prod="toggleProdMode"
     @toggle-ssr="toggleSSR"

packages-private/sfc-playground/src/Header.vue

@@ -15,6 +15,7 @@ const props = defineProps<{
   prod: boolean
   ssr: boolean
   autoSave: boolean
+  theme: 'dark' | 'light'
 }>()
 const emit = defineEmits([
   'toggle-theme',
@@ -45,6 +46,7 @@ function resetVueVersion() {
 
 async function copyLink(e: MouseEvent) {
   if (e.metaKey) {
+    resetVueVersion()
     // hidden logic for going to local debug from play.vuejs.org
     window.location.href = 'http://localhost:5173/' + window.location.hash
     return
@@ -117,7 +119,11 @@ function toggleDark() {
       >
         <span>{{ autoSave ? 'AutoSave ON' : 'AutoSave OFF' }}</span>
       </button>
-      <button title="Toggle dark mode" class="toggle-dark" @click="toggleDark">
+      <button
+        :title="`Switch to ${theme === 'dark' ? 'light' : 'dark'} theme`"
+        class="toggle-dark"
+        @click="toggleDark"
+      >
         <Sun class="light" />
         <Moon class="dark" />
       </button>

packages-private/sfc-playground/src/download/template/package.json

@@ -11,7 +11,7 @@
     "vue": "^3.4.0"
   },
   "devDependencies": {
-    "@vitejs/plugin-vue": "^5.1.4",
+    "@vitejs/plugin-vue": "^5.2.1",
-    "vite": "^5.4.8"
+    "vite": "^6.0.7"
   }
 }

packages-private/template-explorer/package.json

@@ -11,7 +11,7 @@
     "enableNonBrowserBranches": true
   },
   "dependencies": {
-    "monaco-editor": "^0.52.0",
+    "monaco-editor": "^0.52.2",
     "source-map-js": "^1.2.1"
   }
 }

packages/compiler-core/__tests__/transforms/__snapshots__/vMemo.spec.ts.snap

@@ -1,5 +1,23 @@
 // Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
+exports[`compiler: v-memo transform > element v-for key expression prefixing + v-memo 1`] = `
+"import { renderList as _renderList, Fragment as _Fragment, openBlock as _openBlock, createElementBlock as _createElementBlock, isMemoSame as _isMemoSame, withMemo as _withMemo } from "vue"
+
+export function render(_ctx, _cache) {
+  return (_openBlock(), _createElementBlock("div", null, [
+    (_openBlock(true), _createElementBlock(_Fragment, null, _renderList(_ctx.tableData, (data, __, ___, _cached) => {
+      const _memo = (_ctx.getLetter(data))
+      if (_cached && _cached.key === _ctx.getId(data) && _isMemoSame(_cached, _memo)) return _cached
+      const _item = (_openBlock(), _createElementBlock("span", {
+        key: _ctx.getId(data)
+      }))
+      _item.memo = _memo
+      return _item
+    }, _cache, 0), 128 /* KEYED_FRAGMENT */))
+  ]))
+}"
+`;
+
 exports[`compiler: v-memo transform > on component 1`] = `
 "import { resolveComponent as _resolveComponent, createVNode as _createVNode, withMemo as _withMemo, openBlock as _openBlock, createElementBlock as _createElementBlock } from "vue"
 

packages/compiler-core/__tests__/transforms/__snapshots__/vOnce.spec.ts.snap

@@ -8,7 +8,7 @@ return function render(_ctx, _cache) {
     const { setBlockTracking: _setBlockTracking, createElementVNode: _createElementVNode } = _Vue
 
     return _cache[0] || (
-      _setBlockTracking(-1),
+      _setBlockTracking(-1, true),
       (_cache[0] = _createElementVNode("div", { id: foo }, null, 8 /* PROPS */, ["id"])).cacheIndex = 0,
       _setBlockTracking(1),
       _cache[0]
@@ -28,7 +28,7 @@ return function render(_ctx, _cache) {
 
     return (_openBlock(), _createElementBlock("div", null, [
       _cache[0] || (
-        _setBlockTracking(-1),
+        _setBlockTracking(-1, true),
         (_cache[0] = _createVNode(_component_Comp, { id: foo }, null, 8 /* PROPS */, ["id"])).cacheIndex = 0,
         _setBlockTracking(1),
         _cache[0]
@@ -47,7 +47,7 @@ return function render(_ctx, _cache) {
 
     return (_openBlock(), _createElementBlock("div", null, [
       _cache[0] || (
-        _setBlockTracking(-1),
+        _setBlockTracking(-1, true),
         (_cache[0] = _createElementVNode("div", { id: foo }, null, 8 /* PROPS */, ["id"])).cacheIndex = 0,
         _setBlockTracking(1),
         _cache[0]
@@ -66,7 +66,7 @@ return function render(_ctx, _cache) {
 
     return (_openBlock(), _createElementBlock("div", null, [
       _cache[0] || (
-        _setBlockTracking(-1),
+        _setBlockTracking(-1, true),
         (_cache[0] = _renderSlot($slots, "default")).cacheIndex = 0,
         _setBlockTracking(1),
         _cache[0]
@@ -85,7 +85,7 @@ return function render(_ctx, _cache) {
 
     return (_openBlock(), _createElementBlock("div", null, [
       _cache[0] || (
-        _setBlockTracking(-1),
+        _setBlockTracking(-1, true),
         (_cache[0] = _createElementVNode("div")).cacheIndex = 0,
         _setBlockTracking(1),
         _cache[0]

packages/compiler-core/__tests__/transforms/vMemo.spec.ts

@@ -53,4 +53,12 @@ describe('compiler: v-memo transform', () => {
       ),
     ).toMatchSnapshot()
   })
+
+  test('element v-for key expression prefixing + v-memo', () => {
+    expect(
+      compile(
+        `<span v-for="data of tableData" :key="getId(data)" v-memo="getLetter(data)"></span>`,
+      ),
+    ).toMatchSnapshot()
+  })
 })

packages/compiler-core/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vue/compiler-core",
-  "version": "3.5.11",
+  "version": "3.5.13",
   "description": "@vue/compiler-core",
   "main": "index.js",
   "module": "dist/compiler-core.esm-bundler.js",

packages/compiler-core/src/ast.ts

@@ -418,6 +418,7 @@ export interface CacheExpression extends Node {
   index: number
   value: JSChildNode
   needPauseTracking: boolean
+  inVOnce: boolean
   needArraySpread: boolean
 }
 
@@ -774,12 +775,14 @@ export function createCacheExpression(
   index: number,
   value: JSChildNode,
   needPauseTracking: boolean = false,
+  inVOnce: boolean = false,
 ): CacheExpression {
   return {
     type: NodeTypes.JS_CACHE_EXPRESSION,
     index,
     value,
     needPauseTracking: needPauseTracking,
+    inVOnce,
     needArraySpread: false,
     loc: locStub,
   }

packages/compiler-core/src/codegen.ts

@@ -1017,7 +1017,9 @@ function genCacheExpression(node: CacheExpression, context: CodegenContext) {
   push(`_cache[${node.index}] || (`)
   if (needPauseTracking) {
     indent()
-    push(`${helper(SET_BLOCK_TRACKING)}(-1),`)
+    push(`${helper(SET_BLOCK_TRACKING)}(-1`)
+    if (node.inVOnce) push(`, true`)
+    push(`),`)
     newline()
     push(`(`)
   }

packages/compiler-core/src/parser.ts

@@ -933,6 +933,10 @@ function getLoc(start: number, end?: number): SourceLocation {
   }
 }
 
+export function cloneLoc(loc: SourceLocation): SourceLocation {
+  return getLoc(loc.start.offset, loc.end.offset)
+}
+
 function setLocEnd(loc: SourceLocation, end: number) {
   loc.end = tokenizer.getPos(end)
   loc.source = getSlice(loc.start.offset, end)

packages/compiler-core/src/transform.ts

@@ -116,7 +116,7 @@ export interface TransformContext
   addIdentifiers(exp: ExpressionNode | string): void
   removeIdentifiers(exp: ExpressionNode | string): void
   hoist(exp: string | JSChildNode | ArrayExpression): SimpleExpressionNode
-  cache(exp: JSChildNode, isVNode?: boolean): CacheExpression
+  cache(exp: JSChildNode, isVNode?: boolean, inVOnce?: boolean): CacheExpression
   constantCache: WeakMap<TemplateChildNode, ConstantTypes>
 
   // 2.x Compat only
@@ -297,11 +297,12 @@ export function createTransformContext(
       identifier.hoisted = exp
       return identifier
     },
-    cache(exp, isVNode = false) {
+    cache(exp, isVNode = false, inVOnce = false) {
       const cacheExp = createCacheExpression(
         context.cached.length,
         exp,
         isVNode,
+        inVOnce,
       )
       context.cached.push(cacheExp)
       return cacheExp

packages/compiler-core/src/transforms/transformExpression.ts

@@ -24,7 +24,7 @@ import {
   isStaticPropertyKey,
   walkIdentifiers,
 } from '../babelUtils'
-import { advancePositionWithClone, isSimpleIdentifier } from '../utils'
+import { advancePositionWithClone, findDir, isSimpleIdentifier } from '../utils'
 import {
   genPropsAccessExp,
   hasOwn,
@@ -54,6 +54,7 @@ export const transformExpression: NodeTransform = (node, context) => {
     )
   } else if (node.type === NodeTypes.ELEMENT) {
     // handle directives on element
+    const memo = findDir(node, 'memo')
     for (let i = 0; i < node.props.length; i++) {
       const dir = node.props[i]
       // do not process for v-on & v-for since they are special handled
@@ -65,7 +66,14 @@ export const transformExpression: NodeTransform = (node, context) => {
         if (
           exp &&
           exp.type === NodeTypes.SIMPLE_EXPRESSION &&
-          !(dir.name === 'on' && arg)
+          !(dir.name === 'on' && arg) &&
+          // key has been processed in transformFor(vMemo + vFor)
+          !(
+            memo &&
+            arg &&
+            arg.type === NodeTypes.SIMPLE_EXPRESSION &&
+            arg.content === 'key'
+          )
         ) {
           dir.exp = processExpression(
             exp,

packages/compiler-core/src/transforms/vBind.ts

@@ -12,7 +12,7 @@ import { camelize } from '@vue/shared'
 import { CAMELIZE } from '../runtimeHelpers'
 import { processExpression } from './transformExpression'
 
-// v-bind without arg is handled directly in ./transformElements.ts due to it affecting
+// v-bind without arg is handled directly in ./transformElement.ts due to its affecting
 // codegen for the entire props object. This transform here is only for v-bind
 // *with* args.
 export const transformBind: DirectiveTransform = (dir, _node, context) => {

packages/compiler-core/src/transforms/vFor.ts

@@ -63,17 +63,27 @@ export const transformFor: NodeTransform = createStructuralDirectiveTransform(
       const isTemplate = isTemplateNode(node)
       const memo = findDir(node, 'memo')
       const keyProp = findProp(node, `key`, false, true)
-      if (keyProp && keyProp.type === NodeTypes.DIRECTIVE && !keyProp.exp) {
+      const isDirKey = keyProp && keyProp.type === NodeTypes.DIRECTIVE
+      if (isDirKey && !keyProp.exp) {
         // resolve :key shorthand #10882
         transformBindShorthand(keyProp, context)
       }
-      const keyExp =
+      let keyExp =
         keyProp &&
         (keyProp.type === NodeTypes.ATTRIBUTE
           ? keyProp.value
             ? createSimpleExpression(keyProp.value.content, true)
             : undefined
           : keyProp.exp)
+
+      if (memo && keyExp && isDirKey) {
+        if (!__BROWSER__) {
+          keyProp.exp = keyExp = processExpression(
+            keyExp as SimpleExpressionNode,
+            context,
+          )
+        }
+      }
       const keyProperty =
         keyProp && keyExp ? createObjectProperty(`key`, keyExp) : null
 

packages/compiler-core/src/transforms/vIf.ts

@@ -30,6 +30,7 @@ import {
 import { ErrorCodes, createCompilerError } from '../errors'
 import { processExpression } from './transformExpression'
 import { validateBrowserExpression } from '../validateExpression'
+import { cloneLoc } from '../parser'
 import { CREATE_COMMENT, FRAGMENT } from '../runtimeHelpers'
 import { findDir, findProp, getMemoedVNodeCall, injectProp } from '../utils'
 import { PatchFlags } from '@vue/shared'
@@ -110,7 +111,7 @@ export function processIf(
     const branch = createIfBranch(node, dir)
     const ifNode: IfNode = {
       type: NodeTypes.IF,
-      loc: node.loc,
+      loc: cloneLoc(node.loc),
       branches: [branch],
     }
     context.replaceNode(ifNode)

packages/compiler-core/src/transforms/vOn.ts

@@ -17,7 +17,7 @@ import { hasScopeRef, isFnExpression, isMemberExpression } from '../utils'
 import { TO_HANDLER_KEY } from '../runtimeHelpers'
 
 export interface VOnDirectiveNode extends DirectiveNode {
-  // v-on without arg is handled directly in ./transformElements.ts due to it affecting
+  // v-on without arg is handled directly in ./transformElement.ts due to its affecting
   // codegen for the entire props object. This transform here is only for v-on
   // *with* args.
   arg: ExpressionNode

packages/compiler-core/src/transforms/vOnce.ts

@@ -17,7 +17,11 @@ export const transformOnce: NodeTransform = (node, context) => {
       context.inVOnce = false
       const cur = context.currentNode as ElementNode | IfNode | ForNode
       if (cur.codegenNode) {
-        cur.codegenNode = context.cache(cur.codegenNode, true /* isVNode */)
+        cur.codegenNode = context.cache(
+          cur.codegenNode,
+          true /* isVNode */,
+          true /* inVOnce */,
+        )
       }
     }
   }

packages/compiler-dom/__tests__/transforms/__snapshots__/stringifyStatic.spec.ts.snap

@@ -32,6 +32,33 @@ return function render(_ctx, _cache) {
 }"
 `;
 
+exports[`stringify static html > serializing template string style 1`] = `
+"const { toDisplayString: _toDisplayString, normalizeClass: _normalizeClass, createElementVNode: _createElementVNode, createStaticVNode: _createStaticVNode, openBlock: _openBlock, createElementBlock: _createElementBlock } = Vue
+
+return function render(_ctx, _cache) {
+  return (_openBlock(), _createElementBlock("div", null, _cache[0] || (_cache[0] = [
+    _createStaticVNode("<div style=\\"color:red;\\"><span class=\\"foo bar\\">1 + false</span><span class=\\"foo bar\\">1 + false</span><span class=\\"foo bar\\">1 + false</span><span class=\\"foo bar\\">1 + false</span><span class=\\"foo bar\\">1 + false</span></div>", 1)
+  ])))
+}"
+`;
+
+exports[`stringify static html > should bail for <option> elements with null values 1`] = `
+"const { createElementVNode: _createElementVNode, openBlock: _openBlock, createElementBlock: _createElementBlock } = Vue
+
+return function render(_ctx, _cache) {
+  return (_openBlock(), _createElementBlock("div", null, _cache[0] || (_cache[0] = [
+    _createElementVNode("select", null, [
+      _createElementVNode("option", { value: null }),
+      _createElementVNode("option", { value: "1" }),
+      _createElementVNode("option", { value: "1" }),
+      _createElementVNode("option", { value: "1" }),
+      _createElementVNode("option", { value: "1" }),
+      _createElementVNode("option", { value: "1" })
+    ], -1 /* HOISTED */)
+  ])))
+}"
+`;
+
 exports[`stringify static html > should bail for <option> elements with number values 1`] = `
 "const { createElementVNode: _createElementVNode, openBlock: _openBlock, createElementBlock: _createElementBlock } = Vue
 

packages/compiler-dom/__tests__/transforms/stringifyStatic.spec.ts

@@ -162,6 +162,27 @@ describe('stringify static html', () => {
     expect(code).toMatchSnapshot()
   })
 
+  // #12391
+  test('serializing template string style', () => {
+    const { ast, code } = compileWithStringify(
+      `<div><div :style="\`color:red;\`">${repeat(
+        `<span :class="[{ foo: true }, { bar: true }]">{{ 1 }} + {{ false }}</span>`,
+        StringifyThresholds.ELEMENT_WITH_BINDING_COUNT,
+      )}</div></div>`,
+    )
+    // should be optimized now
+    expect(ast.cached).toMatchObject([
+      cachedArrayStaticNodeMatcher(
+        `<div style="color:red;">${repeat(
+          `<span class="foo bar">1 + false</span>`,
+          StringifyThresholds.ELEMENT_WITH_BINDING_COUNT,
+        )}</div>`,
+        1,
+      ),
+    ])
+    expect(code).toMatchSnapshot()
+  })
+
   test('escape', () => {
     const { ast, code } = compileWithStringify(
       `<div><div>${repeat(
@@ -470,6 +491,17 @@ describe('stringify static html', () => {
     expect(code).toMatchSnapshot()
   })
 
+  test('should bail for <option> elements with null values', () => {
+    const { ast, code } = compileWithStringify(
+      `<div><select><option :value="null" />${repeat(
+        `<option value="1" />`,
+        StringifyThresholds.ELEMENT_WITH_BINDING_COUNT,
+      )}</select></div>`,
+    )
+    expect(ast.cached).toMatchObject([cachedArrayBailedMatcher()])
+    expect(code).toMatchSnapshot()
+  })
+
   test('eligible content (elements > 20) + non-eligible content', () => {
     const { code } = compileWithStringify(
       `<div>${repeat(

packages/compiler-dom/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vue/compiler-dom",
-  "version": "3.5.11",
+  "version": "3.5.13",
   "description": "@vue/compiler-dom",
   "main": "index.js",
   "module": "dist/compiler-dom.esm-bundler.js",

packages/compiler-dom/src/transforms/stringifyStatic.ts

@@ -261,8 +261,7 @@ function analyzeNode(node: StringifiableNode): [number, number] | false {
           isOptionTag &&
           isStaticArgOf(p.arg, 'value') &&
           p.exp &&
-          p.exp.ast &&
+          !p.exp.isStatic
-          p.exp.ast.type !== 'StringLiteral'
         ) {
           return bail()
         }

packages/compiler-sfc/__tests__/compileScript/__snapshots__/defineProps.spec.ts.snap

@@ -233,6 +233,33 @@ export default /*@__PURE__*/_defineComponent({
 
       
     
+return {  }
+}
+
+})"
+`;
+
+exports[`defineProps > w/ extends intersection type 1`] = `
+"import { defineComponent as _defineComponent } from 'vue'
+type Foo = {
+        x?: number;
+      };
+      interface Props extends Foo {
+        z: number
+        y: string
+      }
+      
+export default /*@__PURE__*/_defineComponent({
+  props: {
+    z: { type: Number, required: true },
+    y: { type: String, required: true },
+    x: { type: Number, required: false }
+  },
+  setup(__props: any, { expose: __expose }) {
+  __expose();
+
+      
+    
 return {  }
 }
 
@@ -268,6 +295,31 @@ export default /*@__PURE__*/_defineComponent({
 
     
     
+return {  }
+}
+
+})"
+`;
+
+exports[`defineProps > w/ intersection type 1`] = `
+"import { defineComponent as _defineComponent } from 'vue'
+type Foo = {
+        x?: number;
+      };
+      type Bar = {
+        y: string;
+      };
+      
+export default /*@__PURE__*/_defineComponent({
+  props: {
+    x: { type: Number, required: false },
+    y: { type: String, required: true }
+  },
+  setup(__props: any, { expose: __expose }) {
+  __expose();
+
+      
+    
 return {  }
 }
 

packages/compiler-sfc/__tests__/compileScript/__snapshots__/definePropsDestructure.spec.ts.snap

@@ -320,3 +320,22 @@ return { rest }
 
 }"
 `;
+
+exports[`sfc reactive props destructure > with TSInstantiationExpression 1`] = `
+"import { defineComponent as _defineComponent } from 'vue'
+type Foo = <T extends string | number>(data: T) => void
+      
+export default /*@__PURE__*/_defineComponent({
+  props: {
+    value: { type: Function }
+  },
+  setup(__props: any) {
+
+      
+      const foo = __props.value<123>
+      
+return () => {}
+}
+
+})"
+`;

packages/compiler-sfc/__tests__/compileScript/defineProps.spec.ts

@@ -261,6 +261,51 @@ const props = defineProps({ foo: String })
     })
   })
 
+  test('w/ extends intersection type', () => {
+    const { content, bindings } = compile(`
+    <script setup lang="ts">
+      type Foo = {
+        x?: number;
+      };
+      interface Props extends Foo {
+        z: number
+        y: string
+      }
+      defineProps<Props>()
+    </script>
+    `)
+    assertCode(content)
+    expect(content).toMatch(`z: { type: Number, required: true }`)
+    expect(content).toMatch(`y: { type: String, required: true }`)
+    expect(content).toMatch(`x: { type: Number, required: false }`)
+    expect(bindings).toStrictEqual({
+      x: BindingTypes.PROPS,
+      y: BindingTypes.PROPS,
+      z: BindingTypes.PROPS,
+    })
+  })
+
+  test('w/ intersection type', () => {
+    const { content, bindings } = compile(`
+    <script setup lang="ts">
+      type Foo = {
+        x?: number;
+      };
+      type Bar = {
+        y: string;
+      };
+      defineProps<Foo & Bar>()
+    </script>
+    `)
+    assertCode(content)
+    expect(content).toMatch(`y: { type: String, required: true }`)
+    expect(content).toMatch(`x: { type: Number, required: false }`)
+    expect(bindings).toStrictEqual({
+      x: BindingTypes.PROPS,
+      y: BindingTypes.PROPS,
+    })
+  })
+
   test('w/ exported interface', () => {
     const { content, bindings } = compile(`
     <script setup lang="ts">

packages/compiler-sfc/__tests__/compileScript/definePropsDestructure.spec.ts

@@ -198,6 +198,21 @@ describe('sfc reactive props destructure', () => {
   }`)
   })
 
+  test('with TSInstantiationExpression', () => {
+    const { content } = compile(
+      `
+      <script setup lang="ts">
+      type Foo = <T extends string | number>(data: T) => void
+      const { value } = defineProps<{ value: Foo }>()
+      const foo = value<123>
+      </script>
+    `,
+      { isProd: true },
+    )
+    assertCode(content)
+    expect(content).toMatch(`const foo = __props.value<123>`)
+  })
+
   test('aliasing', () => {
     const { content, bindings } = compile(`
       <script setup>

packages/compiler-sfc/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vue/compiler-sfc",
-  "version": "3.5.11",
+  "version": "3.5.13",
   "description": "@vue/compiler-sfc",
   "main": "dist/compiler-sfc.cjs.js",
   "module": "dist/compiler-sfc.esm-browser.js",
@@ -49,7 +49,7 @@
     "@vue/shared": "workspace:*",
     "estree-walker": "catalog:",
     "magic-string": "catalog:",
-    "postcss": "^8.4.47",
+    "postcss": "^8.4.49",
     "source-map-js": "catalog:"
   },
   "devDependencies": {
@@ -58,10 +58,10 @@
     "hash-sum": "^2.0.0",
     "lru-cache": "10.1.0",
     "merge-source-map": "^1.1.0",
-    "minimatch": "~9.0.5",
+    "minimatch": "~10.0.1",
-    "postcss-modules": "^6.0.0",
+    "postcss-modules": "^6.0.1",
-    "postcss-selector-parser": "^6.1.2",
+    "postcss-selector-parser": "^7.0.0",
     "pug": "^3.0.3",
-    "sass": "^1.79.4"
+    "sass": "^1.83.1"
   }
 }

packages/compiler-sfc/src/script/definePropsDestructure.ts

@@ -10,6 +10,7 @@ import type {
 import { walk } from 'estree-walker'
 import {
   BindingTypes,
+  TS_NODE_TYPES,
   extractIdentifiers,
   isFunctionType,
   isInDestructureAssignment,
@@ -240,10 +241,7 @@ export function transformDestructuredProps(
       if (
         parent &&
         parent.type.startsWith('TS') &&
-        parent.type !== 'TSAsExpression' &&
+        !TS_NODE_TYPES.includes(parent.type)
-        parent.type !== 'TSNonNullExpression' &&
-        parent.type !== 'TSSatisfiesExpression' &&
-        parent.type !== 'TSTypeAssertion'
       ) {
         return this.skip()
       }

packages/compiler-sfc/src/style/pluginScoped.ts

@@ -189,8 +189,7 @@ function rewriteSelector(
       // global: replace with inner selector and do not inject [id].
       // ::v-global(.foo) -> .foo
       if (value === ':global' || value === '::v-global') {
-        selectorRoot.insertAfter(selector, n.nodes[0])
+        selector.replaceWith(n.nodes[0])
-        selectorRoot.removeChild(selector)
         return false
       }
     }

packages/compiler-sfc/src/style/preprocessors.ts

@@ -23,28 +23,48 @@ export interface StylePreprocessorResults {
 
 // .scss/.sass processor
 const scss: StylePreprocessor = (source, map, options, load = require) => {
-  const nodeSass = load('sass')
+  const nodeSass: typeof import('sass') = load('sass')
-  const finalOptions = {
+  const { compileString, renderSync } = nodeSass
-    ...options,
+
-    data: getSource(source, options.filename, options.additionalData),
+  const data = getSource(source, options.filename, options.additionalData)
-    file: options.filename,
+  let css: string
-    outFile: options.filename,
+  let dependencies: string[]
-    sourceMap: !!map,
+  let sourceMap: any
-  }
 
   try {
-    const result = nodeSass.renderSync(finalOptions)
+    if (compileString) {
-    const dependencies = result.stats.includedFiles
+      const { pathToFileURL, fileURLToPath }: typeof import('url') = load('url')
-    if (map) {
+
-      return {
+      const result = compileString(data, {
-        code: result.css.toString(),
+        ...options,
-        map: merge(map, JSON.parse(result.map.toString())),
+        url: pathToFileURL(options.filename),
-        errors: [],
+        sourceMap: !!map,
-        dependencies,
+      })
-      }
+      css = result.css
+      dependencies = result.loadedUrls.map(url => fileURLToPath(url))
+      sourceMap = map ? result.sourceMap! : undefined
+    } else {
+      const result = renderSync({
+        ...options,
+        data,
+        file: options.filename,
+        outFile: options.filename,
+        sourceMap: !!map,
+      })
+      css = result.css.toString()
+      dependencies = result.stats.includedFiles
+      sourceMap = map ? JSON.parse(result.map!.toString()) : undefined
     }
 
-    return { code: result.css.toString(), errors: [], dependencies }
+    if (map) {
+      return {
+        code: css,
+        errors: [],
+        dependencies,
+        map: merge(map, sourceMap!),
+      }
+    }
+    return { code: css, errors: [], dependencies }
   } catch (e: any) {
     return { code: '', errors: [e], dependencies: [] }
   }

packages/compiler-ssr/__tests__/ssrElement.spec.ts

@@ -337,6 +337,39 @@ describe('ssr: element', () => {
         `)
     })
 
+    test('custom dir with v-text', () => {
+      expect(getCompiledString(`<div v-xxx v-text="foo" />`))
+        .toMatchInlineSnapshot(`
+          "\`<div\${
+              _ssrRenderAttrs(_ssrGetDirectiveProps(_ctx, _directive_xxx))
+            }>\${
+              _ssrInterpolate(_ctx.foo)
+            }</div>\`"
+        `)
+    })
+
+    test('custom dir with v-text and normal attrs', () => {
+      expect(getCompiledString(`<div class="test" v-xxx v-text="foo" />`))
+        .toMatchInlineSnapshot(`
+          "\`<div\${
+              _ssrRenderAttrs(_mergeProps({ class: "test" }, _ssrGetDirectiveProps(_ctx, _directive_xxx)))
+            }>\${
+              _ssrInterpolate(_ctx.foo)
+            }</div>\`"
+        `)
+    })
+
+    test('mulptiple custom dirs with v-text', () => {
+      expect(getCompiledString(`<div v-xxx v-yyy v-text="foo" />`))
+        .toMatchInlineSnapshot(`
+          "\`<div\${
+              _ssrRenderAttrs(_mergeProps(_ssrGetDirectiveProps(_ctx, _directive_xxx), _ssrGetDirectiveProps(_ctx, _directive_yyy)))
+            }>\${
+              _ssrInterpolate(_ctx.foo)
+            }</div>\`"
+        `)
+    })
+
     test('custom dir with object v-bind', () => {
       expect(getCompiledString(`<div v-bind="x" v-xxx />`))
         .toMatchInlineSnapshot(`

packages/compiler-ssr/__tests__/ssrVModel.spec.ts

@@ -52,6 +52,52 @@ describe('ssr: v-model', () => {
       }"
     `)
 
+    expect(
+      compileWithWrapper(
+        `<select v-model="model"><option v-for="i in items" :value="i"></option></select>`,
+      ).code,
+    ).toMatchInlineSnapshot(`
+      "const { ssrRenderAttr: _ssrRenderAttr, ssrIncludeBooleanAttr: _ssrIncludeBooleanAttr, ssrLooseContain: _ssrLooseContain, ssrLooseEqual: _ssrLooseEqual, ssrRenderAttrs: _ssrRenderAttrs, ssrRenderList: _ssrRenderList } = require("vue/server-renderer")
+
+      return function ssrRender(_ctx, _push, _parent, _attrs) {
+        _push(\`<div\${_ssrRenderAttrs(_attrs)}><select><!--[-->\`)
+        _ssrRenderList(_ctx.items, (i) => {
+          _push(\`<option\${
+            _ssrRenderAttr("value", i)
+          }\${
+            (_ssrIncludeBooleanAttr((Array.isArray(_ctx.model))
+              ? _ssrLooseContain(_ctx.model, i)
+              : _ssrLooseEqual(_ctx.model, i))) ? " selected" : ""
+          }></option>\`)
+        })
+        _push(\`<!--]--></select></div>\`)
+      }"
+    `)
+
+    expect(
+      compileWithWrapper(
+        `<select v-model="model"><option v-if="true" :value="i"></option></select>`,
+      ).code,
+    ).toMatchInlineSnapshot(`
+      "const { ssrRenderAttr: _ssrRenderAttr, ssrIncludeBooleanAttr: _ssrIncludeBooleanAttr, ssrLooseContain: _ssrLooseContain, ssrLooseEqual: _ssrLooseEqual, ssrRenderAttrs: _ssrRenderAttrs } = require("vue/server-renderer")
+
+      return function ssrRender(_ctx, _push, _parent, _attrs) {
+        _push(\`<div\${_ssrRenderAttrs(_attrs)}><select>\`)
+        if (true) {
+          _push(\`<option\${
+            _ssrRenderAttr("value", _ctx.i)
+          }\${
+            (_ssrIncludeBooleanAttr((Array.isArray(_ctx.model))
+              ? _ssrLooseContain(_ctx.model, _ctx.i)
+              : _ssrLooseEqual(_ctx.model, _ctx.i))) ? " selected" : ""
+          }></option>\`)
+        } else {
+          _push(\`<!---->\`)
+        }
+        _push(\`</select></div>\`)
+      }"
+    `)
+
     expect(
       compileWithWrapper(
         `<select multiple v-model="model"><option value="1" selected></option><option value="2"></option></select>`,

packages/compiler-ssr/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vue/compiler-ssr",
-  "version": "3.5.11",
+  "version": "3.5.13",
   "description": "@vue/compiler-ssr",
   "main": "dist/compiler-ssr.cjs.js",
   "types": "dist/compiler-ssr.d.ts",

packages/compiler-ssr/src/transforms/ssrTransformElement.ts

@@ -28,6 +28,7 @@ import {
   createSequenceExpression,
   createSimpleExpression,
   createTemplateLiteral,
+  findDir,
   hasDynamicKeyVBind,
   isStaticArgOf,
   isStaticExp,
@@ -164,24 +165,28 @@ export const ssrTransformElement: NodeTransform = (node, context) => {
             ]
           }
         } else if (directives.length && !node.children.length) {
-          const tempId = `_temp${context.temps++}`
+          // v-text directive has higher priority than the merged props
-          propsExp.arguments = [
+          const vText = findDir(node, 'text')
-            createAssignmentExpression(
+          if (!vText) {
-              createSimpleExpression(tempId, false),
+            const tempId = `_temp${context.temps++}`
-              mergedProps,
+            propsExp.arguments = [
-            ),
+              createAssignmentExpression(
-          ]
+                createSimpleExpression(tempId, false),
-          rawChildrenMap.set(
+                mergedProps,
-            node,
+              ),
-            createConditionalExpression(
+            ]
-              createSimpleExpression(`"textContent" in ${tempId}`, false),
+            rawChildrenMap.set(
-              createCallExpression(context.helper(SSR_INTERPOLATE), [
+              node,
-                createSimpleExpression(`${tempId}.textContent`, false),
+              createConditionalExpression(
-              ]),
+                createSimpleExpression(`"textContent" in ${tempId}`, false),
-              createSimpleExpression(`${tempId}.innerHTML ?? ''`, false),
+                createCallExpression(context.helper(SSR_INTERPOLATE), [
-              false,
+                  createSimpleExpression(`${tempId}.textContent`, false),
-            ),
+                ]),
-          )
+                createSimpleExpression(`${tempId}.innerHTML ?? ''`, false),
+                false,
+              ),
+            )
+          }
         }
 
         if (needTagForRuntime) {

packages/compiler-ssr/src/transforms/ssrVModel.ts

@@ -5,6 +5,7 @@ import {
   type ExpressionNode,
   NodeTypes,
   type PlainElementNode,
+  type TemplateChildNode,
   createCallExpression,
   createConditionalExpression,
   createDOMCompilerError,
@@ -162,11 +163,18 @@ export const ssrTransformModel: DirectiveTransform = (dir, node, context) => {
       checkDuplicatedValue()
       node.children = [createInterpolation(model, model.loc)]
     } else if (node.tag === 'select') {
-      node.children.forEach(child => {
+      const processChildren = (children: TemplateChildNode[]) => {
-        if (child.type === NodeTypes.ELEMENT) {
+        children.forEach(child => {
-          processOption(child as PlainElementNode)
+          if (child.type === NodeTypes.ELEMENT) {
-        }
+            processOption(child as PlainElementNode)
-      })
+          } else if (child.type === NodeTypes.FOR) {
+            processChildren(child.children)
+          } else if (child.type === NodeTypes.IF) {
+            child.branches.forEach(b => processChildren(b.children))
+          }
+        })
+      }
+      processChildren(node.children)
     } else {
       context.onError(
         createDOMCompilerError(

packages/reactivity/__benchmarks__/computed.bench.ts

@@ -1,5 +1,10 @@
 import { bench, describe } from 'vitest'
-import { type ComputedRef, type Ref, computed, effect, ref } from '../src'
+import type { ComputedRef, Ref } from '../src'
+import { computed, effect, ref } from '../dist/reactivity.esm-browser.prod'
+
+declare module '../dist/reactivity.esm-browser.prod' {
+  function computed(...args: any[]): any
+}
 
 describe('computed', () => {
   bench('create computed', () => {

packages/reactivity/__benchmarks__/effect.bench.ts

@@ -1,5 +1,6 @@
 import { bench, describe } from 'vitest'
-import { type Ref, effect, ref } from '../src'
+import type { Ref } from '../src'
+import { effect, ref } from '../dist/reactivity.esm-browser.prod'
 
 describe('effect', () => {
   {

packages/reactivity/__benchmarks__/reactiveArray.bench.ts

@@ -1,5 +1,9 @@
 import { bench } from 'vitest'
-import { effect, reactive, shallowReadArray } from '../src'
+import {
+  effect,
+  reactive,
+  shallowReadArray,
+} from '../dist/reactivity.esm-browser.prod'
 
 for (let amount = 1e1; amount < 1e4; amount *= 10) {
   {

packages/reactivity/__benchmarks__/reactiveMap.bench.ts

@@ -1,5 +1,6 @@
 import { bench } from 'vitest'
-import { type ComputedRef, computed, reactive } from '../src'
+import type { ComputedRef } from '../src'
+import { computed, reactive } from '../dist/reactivity.esm-browser.prod'
 
 function createMap(obj: Record<string, any>) {
   const map = new Map()

packages/reactivity/__benchmarks__/reactiveObject.bench.ts

@@ -1,5 +1,5 @@
 import { bench } from 'vitest'
-import { reactive } from '../src'
+import { reactive } from '../dist/reactivity.esm-browser.prod'
 
 bench('create reactive obj', () => {
   reactive({ a: 1 })

packages/reactivity/__benchmarks__/ref.bench.ts

@@ -1,5 +1,5 @@
 import { bench, describe } from 'vitest'
-import { ref } from '../src/index'
+import { ref } from '../dist/reactivity.esm-browser.prod'
 
 describe('ref', () => {
   bench('create ref', () => {

packages/reactivity/__tests__/computed.spec.ts

@@ -1107,4 +1107,36 @@ describe('reactivity/computed', () => {
       end.prop4.value,
     ]).toMatchObject([-2, -4, 2, 3])
   })
+
+  test('performance when removing dependencies from deeply nested computeds', () => {
+    const base = ref(1)
+    const trigger = ref(true)
+    const computeds: ComputedRef<number>[] = []
+
+    const LAYERS = 30
+
+    for (let i = 0; i < LAYERS; i++) {
+      const earlier = [...computeds]
+
+      computeds.push(
+        computed(() => {
+          return base.value + earlier.reduce((sum, c) => sum + c.value, 0)
+        }),
+      )
+    }
+
+    const tail = computed(() =>
+      trigger.value ? computeds[computeds.length - 1].value : 0,
+    )
+
+    const t0 = performance.now()
+    expect(tail.value).toBe(2 ** (LAYERS - 1))
+    const t1 = performance.now()
+    expect(t1 - t0).toBeLessThan(process.env.CI ? 100 : 30)
+
+    trigger.value = false
+    expect(tail.value).toBe(0)
+    const t2 = performance.now()
+    expect(t2 - t1).toBeLessThan(process.env.CI ? 100 : 30)
+  })
 })

packages/reactivity/__tests__/effectScope.spec.ts

@@ -176,7 +176,7 @@ describe('reactivity/effect/scope', () => {
 
     expect('[Vue warn] cannot run an inactive effect scope.').toHaveBeenWarned()
 
-    expect(scope.effects.length).toBe(1)
+    expect(scope.effects.length).toBe(0)
 
     counter.num = 7
     expect(dummy).toBe(0)
@@ -322,4 +322,44 @@ describe('reactivity/effect/scope', () => {
     scope.resume()
     expect(fnSpy).toHaveBeenCalledTimes(3)
   })
+
+  test('removing a watcher while stopping its effectScope', async () => {
+    const count = ref(0)
+    const scope = effectScope()
+    let watcherCalls = 0
+    let cleanupCalls = 0
+
+    scope.run(() => {
+      const stop1 = watch(count, () => {
+        watcherCalls++
+      })
+      watch(count, (val, old, onCleanup) => {
+        watcherCalls++
+        onCleanup(() => {
+          cleanupCalls++
+          stop1()
+        })
+      })
+      watch(count, () => {
+        watcherCalls++
+      })
+    })
+
+    expect(watcherCalls).toBe(0)
+    expect(cleanupCalls).toBe(0)
+
+    count.value++
+    await nextTick()
+    expect(watcherCalls).toBe(3)
+    expect(cleanupCalls).toBe(0)
+
+    scope.stop()
+    count.value++
+    await nextTick()
+    expect(watcherCalls).toBe(3)
+    expect(cleanupCalls).toBe(1)
+
+    expect(scope.effects.length).toBe(0)
+    expect(scope.cleanups.length).toBe(0)
+  })
 })

packages/reactivity/__tests__/reactive.spec.ts

@@ -409,4 +409,14 @@ describe('reactivity/reactive', () => {
     e.effect.stop()
     expect(targetMap.get(obj)?.get('x')).toBeFalsy()
   })
+
+  test('should trigger reactivity when Map key is undefined', () => {
+    const map = reactive(new Map())
+    const c = computed(() => map.get(void 0))
+
+    expect(c.value).toBe(void 0)
+
+    map.set(void 0, 1)
+    expect(c.value).toBe(1)
+  })
 })

packages/reactivity/__tests__/reactiveArray.spec.ts

@@ -51,6 +51,7 @@ describe('reactivity/reactive/Array', () => {
     const raw = {}
     const arr = reactive([{}, {}])
     arr.push(raw)
+
     expect(arr.indexOf(raw)).toBe(2)
     expect(arr.indexOf(raw, 3)).toBe(-1)
     expect(arr.includes(raw)).toBe(true)
@@ -89,6 +90,84 @@ describe('reactivity/reactive/Array', () => {
     expect(index).toBe(1)
   })
 
+  // only non-existent reactive will try to search by using its raw value
+  describe('Array identity methods should not be called more than necessary', () => {
+    const identityMethods = ['includes', 'indexOf', 'lastIndexOf'] as const
+
+    function instrumentArr(rawTarget: any[]) {
+      identityMethods.forEach(key => {
+        const spy = vi.fn(rawTarget[key] as any)
+        rawTarget[key] = spy
+      })
+    }
+
+    function searchValue(target: any[], ...args: unknown[]) {
+      return identityMethods.map(key => (target[key] as any)(...args))
+    }
+
+    function unInstrumentArr(rawTarget: any[]) {
+      identityMethods.forEach(key => {
+        ;(rawTarget[key] as any).mockClear()
+        // relink to prototype method
+        rawTarget[key] = Array.prototype[key] as any
+      })
+    }
+
+    function expectHaveBeenCalledTimes(rawTarget: any[], times: number) {
+      identityMethods.forEach(key => {
+        expect(rawTarget[key]).toHaveBeenCalledTimes(times)
+      })
+    }
+
+    test('should be called once with a non-existent raw value', () => {
+      const reactiveArr = reactive([])
+      instrumentArr(toRaw(reactiveArr))
+      const searchResult = searchValue(reactiveArr, {})
+
+      expectHaveBeenCalledTimes(toRaw(reactiveArr), 1)
+      expect(searchResult).toStrictEqual([false, -1, -1])
+
+      unInstrumentArr(toRaw(reactiveArr))
+    })
+
+    test('should be called once with an existent reactive value', () => {
+      const existReactiveValue = reactive({})
+      const reactiveArr = reactive([existReactiveValue, existReactiveValue])
+
+      instrumentArr(toRaw(reactiveArr))
+      const searchResult = searchValue(reactiveArr, existReactiveValue)
+
+      expectHaveBeenCalledTimes(toRaw(reactiveArr), 1)
+      expect(searchResult).toStrictEqual([true, 0, 1])
+
+      unInstrumentArr(toRaw(reactiveArr))
+    })
+
+    test('should be called twice with a non-existent reactive value', () => {
+      const reactiveArr = reactive([])
+      instrumentArr(toRaw(reactiveArr))
+      const searchResult = searchValue(reactiveArr, reactive({}))
+
+      expectHaveBeenCalledTimes(toRaw(reactiveArr), 2)
+      expect(searchResult).toStrictEqual([false, -1, -1])
+
+      unInstrumentArr(toRaw(reactiveArr))
+    })
+
+    test('should be called twice with a non-existent reactive value, but the raw value exists', () => {
+      const existRaw = {}
+      const reactiveArr = reactive([existRaw, existRaw])
+
+      instrumentArr(toRaw(reactiveArr))
+      const searchResult = searchValue(reactiveArr, reactive(existRaw))
+
+      expectHaveBeenCalledTimes(toRaw(reactiveArr), 2)
+      expect(searchResult).toStrictEqual([true, 0, 1])
+
+      unInstrumentArr(toRaw(reactiveArr))
+    })
+  })
+
   test('delete on Array should not trigger length dependency', () => {
     const arr = reactive([1, 2, 3])
     const fn = vi.fn()

packages/reactivity/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vue/reactivity",
-  "version": "3.5.11",
+  "version": "3.5.13",
   "description": "@vue/reactivity",
   "main": "index.js",
   "module": "dist/reactivity.esm-bundler.js",

packages/reactivity/src/baseHandlers.ts

@@ -53,6 +53,8 @@ class BaseReactiveHandler implements ProxyHandler<Target> {
   ) {}
 
   get(target: Target, key: string | symbol, receiver: object): any {
+    if (key === ReactiveFlags.SKIP) return target[ReactiveFlags.SKIP]
+
     const isReadonly = this._isReadonly,
       isShallow = this._isShallow
     if (key === ReactiveFlags.IS_REACTIVE) {

packages/reactivity/src/collectionHandlers.ts

@@ -8,7 +8,14 @@ import {
 } from './reactive'
 import { ITERATE_KEY, MAP_KEY_ITERATE_KEY, track, trigger } from './dep'
 import { ReactiveFlags, TrackOpTypes, TriggerOpTypes } from './constants'
-import { capitalize, hasChanged, hasOwn, isMap, toRawType } from '@vue/shared'
+import {
+  capitalize,
+  extend,
+  hasChanged,
+  hasOwn,
+  isMap,
+  toRawType,
+} from '@vue/shared'
 import { warn } from './warning'
 
 type CollectionTypes = IterableCollections | WeakCollections
@@ -23,152 +30,6 @@ const toShallow = <T extends unknown>(value: T): T => value
 const getProto = <T extends CollectionTypes>(v: T): any =>
   Reflect.getPrototypeOf(v)
 
-function get(
-  target: MapTypes,
-  key: unknown,
-  isReadonly = false,
-  isShallow = false,
-) {
-  // #1772: readonly(reactive(Map)) should return readonly + reactive version
-  // of the value
-  target = target[ReactiveFlags.RAW]
-  const rawTarget = toRaw(target)
-  const rawKey = toRaw(key)
-  if (!isReadonly) {
-    if (hasChanged(key, rawKey)) {
-      track(rawTarget, TrackOpTypes.GET, key)
-    }
-    track(rawTarget, TrackOpTypes.GET, rawKey)
-  }
-  const { has } = getProto(rawTarget)
-  const wrap = isShallow ? toShallow : isReadonly ? toReadonly : toReactive
-  if (has.call(rawTarget, key)) {
-    return wrap(target.get(key))
-  } else if (has.call(rawTarget, rawKey)) {
-    return wrap(target.get(rawKey))
-  } else if (target !== rawTarget) {
-    // #3602 readonly(reactive(Map))
-    // ensure that the nested reactive `Map` can do tracking for itself
-    target.get(key)
-  }
-}
-
-function has(this: CollectionTypes, key: unknown, isReadonly = false): boolean {
-  const target = this[ReactiveFlags.RAW]
-  const rawTarget = toRaw(target)
-  const rawKey = toRaw(key)
-  if (!isReadonly) {
-    if (hasChanged(key, rawKey)) {
-      track(rawTarget, TrackOpTypes.HAS, key)
-    }
-    track(rawTarget, TrackOpTypes.HAS, rawKey)
-  }
-  return key === rawKey
-    ? target.has(key)
-    : target.has(key) || target.has(rawKey)
-}
-
-function size(target: IterableCollections, isReadonly = false) {
-  target = target[ReactiveFlags.RAW]
-  !isReadonly && track(toRaw(target), TrackOpTypes.ITERATE, ITERATE_KEY)
-  return Reflect.get(target, 'size', target)
-}
-
-function add(this: SetTypes, value: unknown, _isShallow = false) {
-  if (!_isShallow && !isShallow(value) && !isReadonly(value)) {
-    value = toRaw(value)
-  }
-  const target = toRaw(this)
-  const proto = getProto(target)
-  const hadKey = proto.has.call(target, value)
-  if (!hadKey) {
-    target.add(value)
-    trigger(target, TriggerOpTypes.ADD, value, value)
-  }
-  return this
-}
-
-function set(this: MapTypes, key: unknown, value: unknown, _isShallow = false) {
-  if (!_isShallow && !isShallow(value) && !isReadonly(value)) {
-    value = toRaw(value)
-  }
-  const target = toRaw(this)
-  const { has, get } = getProto(target)
-
-  let hadKey = has.call(target, key)
-  if (!hadKey) {
-    key = toRaw(key)
-    hadKey = has.call(target, key)
-  } else if (__DEV__) {
-    checkIdentityKeys(target, has, key)
-  }
-
-  const oldValue = get.call(target, key)
-  target.set(key, value)
-  if (!hadKey) {
-    trigger(target, TriggerOpTypes.ADD, key, value)
-  } else if (hasChanged(value, oldValue)) {
-    trigger(target, TriggerOpTypes.SET, key, value, oldValue)
-  }
-  return this
-}
-
-function deleteEntry(this: CollectionTypes, key: unknown) {
-  const target = toRaw(this)
-  const { has, get } = getProto(target)
-  let hadKey = has.call(target, key)
-  if (!hadKey) {
-    key = toRaw(key)
-    hadKey = has.call(target, key)
-  } else if (__DEV__) {
-    checkIdentityKeys(target, has, key)
-  }
-
-  const oldValue = get ? get.call(target, key) : undefined
-  // forward the operation before queueing reactions
-  const result = target.delete(key)
-  if (hadKey) {
-    trigger(target, TriggerOpTypes.DELETE, key, undefined, oldValue)
-  }
-  return result
-}
-
-function clear(this: IterableCollections) {
-  const target = toRaw(this)
-  const hadItems = target.size !== 0
-  const oldTarget = __DEV__
-    ? isMap(target)
-      ? new Map(target)
-      : new Set(target)
-    : undefined
-  // forward the operation before queueing reactions
-  const result = target.clear()
-  if (hadItems) {
-    trigger(target, TriggerOpTypes.CLEAR, undefined, undefined, oldTarget)
-  }
-  return result
-}
-
-function createForEach(isReadonly: boolean, isShallow: boolean) {
-  return function forEach(
-    this: IterableCollections,
-    callback: Function,
-    thisArg?: unknown,
-  ) {
-    const observed = this
-    const target = observed[ReactiveFlags.RAW]
-    const rawTarget = toRaw(target)
-    const wrap = isShallow ? toShallow : isReadonly ? toReadonly : toReactive
-    !isReadonly && track(rawTarget, TrackOpTypes.ITERATE, ITERATE_KEY)
-    return target.forEach((value: unknown, key: unknown) => {
-      // important: make sure the callback is
-      // 1. invoked with the reactive map as `this` and 3rd arg
-      // 2. the value received should be a corresponding reactive/readonly.
-      return callback.call(thisArg, wrap(value), wrap(key), observed)
-    })
-  }
-}
-
 function createIterableMethod(
   method: string | symbol,
   isReadonly: boolean,
@@ -232,74 +93,158 @@ function createReadonlyMethod(type: TriggerOpTypes): Function {
 
 type Instrumentations = Record<string | symbol, Function | number>
 
-function createInstrumentations() {
+function createInstrumentations(
-  const mutableInstrumentations: Instrumentations = {
+  readonly: boolean,
+  shallow: boolean,
+): Instrumentations {
+  const instrumentations: Instrumentations = {
     get(this: MapTypes, key: unknown) {
-      return get(this, key)
+      // #1772: readonly(reactive(Map)) should return readonly + reactive version
+      // of the value
+      const target = this[ReactiveFlags.RAW]
+      const rawTarget = toRaw(target)
+      const rawKey = toRaw(key)
+      if (!readonly) {
+        if (hasChanged(key, rawKey)) {
+          track(rawTarget, TrackOpTypes.GET, key)
+        }
+        track(rawTarget, TrackOpTypes.GET, rawKey)
+      }
+      const { has } = getProto(rawTarget)
+      const wrap = shallow ? toShallow : readonly ? toReadonly : toReactive
+      if (has.call(rawTarget, key)) {
+        return wrap(target.get(key))
+      } else if (has.call(rawTarget, rawKey)) {
+        return wrap(target.get(rawKey))
+      } else if (target !== rawTarget) {
+        // #3602 readonly(reactive(Map))
+        // ensure that the nested reactive `Map` can do tracking for itself
+        target.get(key)
+      }
     },
     get size() {
-      return size(this as unknown as IterableCollections)
+      const target = (this as unknown as IterableCollections)[ReactiveFlags.RAW]
+      !readonly && track(toRaw(target), TrackOpTypes.ITERATE, ITERATE_KEY)
+      return Reflect.get(target, 'size', target)
+    },
+    has(this: CollectionTypes, key: unknown): boolean {
+      const target = this[ReactiveFlags.RAW]
+      const rawTarget = toRaw(target)
+      const rawKey = toRaw(key)
+      if (!readonly) {
+        if (hasChanged(key, rawKey)) {
+          track(rawTarget, TrackOpTypes.HAS, key)
+        }
+        track(rawTarget, TrackOpTypes.HAS, rawKey)
+      }
+      return key === rawKey
+        ? target.has(key)
+        : target.has(key) || target.has(rawKey)
+    },
+    forEach(this: IterableCollections, callback: Function, thisArg?: unknown) {
+      const observed = this
+      const target = observed[ReactiveFlags.RAW]
+      const rawTarget = toRaw(target)
+      const wrap = shallow ? toShallow : readonly ? toReadonly : toReactive
+      !readonly && track(rawTarget, TrackOpTypes.ITERATE, ITERATE_KEY)
+      return target.forEach((value: unknown, key: unknown) => {
+        // important: make sure the callback is
+        // 1. invoked with the reactive map as `this` and 3rd arg
+        // 2. the value received should be a corresponding reactive/readonly.
+        return callback.call(thisArg, wrap(value), wrap(key), observed)
+      })
     },
-    has,
-    add,
-    set,
-    delete: deleteEntry,
-    clear,
-    forEach: createForEach(false, false),
   }
 
-  const shallowInstrumentations: Instrumentations = {
+  extend(
-    get(this: MapTypes, key: unknown) {
+    instrumentations,
-      return get(this, key, false, true)
+    readonly
-    },
+      ? {
-    get size() {
+          add: createReadonlyMethod(TriggerOpTypes.ADD),
-      return size(this as unknown as IterableCollections)
+          set: createReadonlyMethod(TriggerOpTypes.SET),
-    },
+          delete: createReadonlyMethod(TriggerOpTypes.DELETE),
-    has,
+          clear: createReadonlyMethod(TriggerOpTypes.CLEAR),
-    add(this: SetTypes, value: unknown) {
+        }
-      return add.call(this, value, true)
+      : {
-    },
+          add(this: SetTypes, value: unknown) {
-    set(this: MapTypes, key: unknown, value: unknown) {
+            if (!shallow && !isShallow(value) && !isReadonly(value)) {
-      return set.call(this, key, value, true)
+              value = toRaw(value)
-    },
+            }
-    delete: deleteEntry,
+            const target = toRaw(this)
-    clear,
+            const proto = getProto(target)
-    forEach: createForEach(false, true),
+            const hadKey = proto.has.call(target, value)
-  }
+            if (!hadKey) {
+              target.add(value)
+              trigger(target, TriggerOpTypes.ADD, value, value)
+            }
+            return this
+          },
+          set(this: MapTypes, key: unknown, value: unknown) {
+            if (!shallow && !isShallow(value) && !isReadonly(value)) {
+              value = toRaw(value)
+            }
+            const target = toRaw(this)
+            const { has, get } = getProto(target)
 
-  const readonlyInstrumentations: Instrumentations = {
+            let hadKey = has.call(target, key)
-    get(this: MapTypes, key: unknown) {
+            if (!hadKey) {
-      return get(this, key, true)
+              key = toRaw(key)
-    },
+              hadKey = has.call(target, key)
-    get size() {
+            } else if (__DEV__) {
-      return size(this as unknown as IterableCollections, true)
+              checkIdentityKeys(target, has, key)
-    },
+            }
-    has(this: MapTypes, key: unknown) {
-      return has.call(this, key, true)
-    },
-    add: createReadonlyMethod(TriggerOpTypes.ADD),
-    set: createReadonlyMethod(TriggerOpTypes.SET),
-    delete: createReadonlyMethod(TriggerOpTypes.DELETE),
-    clear: createReadonlyMethod(TriggerOpTypes.CLEAR),
-    forEach: createForEach(true, false),
-  }
 
-  const shallowReadonlyInstrumentations: Instrumentations = {
+            const oldValue = get.call(target, key)
-    get(this: MapTypes, key: unknown) {
+            target.set(key, value)
-      return get(this, key, true, true)
+            if (!hadKey) {
-    },
+              trigger(target, TriggerOpTypes.ADD, key, value)
-    get size() {
+            } else if (hasChanged(value, oldValue)) {
-      return size(this as unknown as IterableCollections, true)
+              trigger(target, TriggerOpTypes.SET, key, value, oldValue)
-    },
+            }
-    has(this: MapTypes, key: unknown) {
+            return this
-      return has.call(this, key, true)
+          },
-    },
+          delete(this: CollectionTypes, key: unknown) {
-    add: createReadonlyMethod(TriggerOpTypes.ADD),
+            const target = toRaw(this)
-    set: createReadonlyMethod(TriggerOpTypes.SET),
+            const { has, get } = getProto(target)
-    delete: createReadonlyMethod(TriggerOpTypes.DELETE),
+            let hadKey = has.call(target, key)
-    clear: createReadonlyMethod(TriggerOpTypes.CLEAR),
+            if (!hadKey) {
-    forEach: createForEach(true, true),
+              key = toRaw(key)
-  }
+              hadKey = has.call(target, key)
+            } else if (__DEV__) {
+              checkIdentityKeys(target, has, key)
+            }
+
+            const oldValue = get ? get.call(target, key) : undefined
+            // forward the operation before queueing reactions
+            const result = target.delete(key)
+            if (hadKey) {
+              trigger(target, TriggerOpTypes.DELETE, key, undefined, oldValue)
+            }
+            return result
+          },
+          clear(this: IterableCollections) {
+            const target = toRaw(this)
+            const hadItems = target.size !== 0
+            const oldTarget = __DEV__
+              ? isMap(target)
+                ? new Map(target)
+                : new Set(target)
+              : undefined
+            // forward the operation before queueing reactions
+            const result = target.clear()
+            if (hadItems) {
+              trigger(
+                target,
+                TriggerOpTypes.CLEAR,
+                undefined,
+                undefined,
+                oldTarget,
+              )
+            }
+            return result
+          },
+        },
+  )
 
   const iteratorMethods = [
     'keys',
@@ -309,39 +254,14 @@ function createInstrumentations() {
   ] as const
 
   iteratorMethods.forEach(method => {
-    mutableInstrumentations[method] = createIterableMethod(method, false, false)
+    instrumentations[method] = createIterableMethod(method, readonly, shallow)
-    readonlyInstrumentations[method] = createIterableMethod(method, true, false)
-    shallowInstrumentations[method] = createIterableMethod(method, false, true)
-    shallowReadonlyInstrumentations[method] = createIterableMethod(
-      method,
-      true,
-      true,
-    )
   })
 
-  return [
+  return instrumentations
-    mutableInstrumentations,
-    readonlyInstrumentations,
-    shallowInstrumentations,
-    shallowReadonlyInstrumentations,
-  ]
 }
 
-const [
-  mutableInstrumentations,
-  readonlyInstrumentations,
-  shallowInstrumentations,
-  shallowReadonlyInstrumentations,
-] = /* @__PURE__*/ createInstrumentations()
-
 function createInstrumentationGetter(isReadonly: boolean, shallow: boolean) {
-  const instrumentations = shallow
+  const instrumentations = createInstrumentations(isReadonly, shallow)
-    ? isReadonly
-      ? shallowReadonlyInstrumentations
-      : shallowInstrumentations
-    : isReadonly
-      ? readonlyInstrumentations
-      : mutableInstrumentations
 
   return (
     target: CollectionTypes,

packages/reactivity/src/dep.ts

@@ -340,7 +340,7 @@ export function trigger(
       })
     } else {
       // schedule runs for SET | ADD | DELETE
-      if (key !== void 0) {
+      if (key !== void 0 || depsMap.has(void 0)) {
         run(depsMap.get(key))
       }
 

packages/reactivity/src/effect.ts

@@ -426,23 +426,24 @@ function removeSub(link: Link, soft = false) {
     nextSub.prevSub = prevSub
     link.nextSub = undefined
   }
-  if (dep.subs === link) {
-    // was previous tail, point new tail to prev
-    dep.subs = prevSub
-  }
   if (__DEV__ && dep.subsHead === link) {
     // was previous head, point new head to next
     dep.subsHead = nextSub
   }
 
-  if (!dep.subs && dep.computed) {
+  if (dep.subs === link) {
-    // if computed, unsubscribe it from all its deps so this computed and its
+    // was previous tail, point new tail to prev
-    // value can be GCed
+    dep.subs = prevSub
-    dep.computed.flags &= ~EffectFlags.TRACKING
+
-    for (let l = dep.computed.deps; l; l = l.nextDep) {
+    if (!prevSub && dep.computed) {
-      // here we are only "soft" unsubscribing because the computed still keeps
+      // if computed, unsubscribe it from all its deps so this computed and its
-      // referencing the deps and the dep should not decrease its sub count
+      // value can be GCed
-      removeSub(l, true)
+      dep.computed.flags &= ~EffectFlags.TRACKING
+      for (let l = dep.computed.deps; l; l = l.nextDep) {
+        // here we are only "soft" unsubscribing because the computed still keeps
+        // referencing the deps and the dep should not decrease its sub count
+        removeSub(l, true)
+      }
     }
   }
 

packages/reactivity/src/effectScope.ts

@@ -8,6 +8,10 @@ export class EffectScope {
    * @internal
    */
   private _active = true
+  /**
+   * @internal track `on` calls, allow `on` call multiple times
+   */
+  private _on = 0
   /**
    * @internal
    */
@@ -99,12 +103,16 @@ export class EffectScope {
     }
   }
 
+  prevScope: EffectScope | undefined
   /**
    * This should only be called on non-detached scopes
    * @internal
    */
   on(): void {
-    activeEffectScope = this
+    if (++this._on === 1) {
+      this.prevScope = activeEffectScope
+      activeEffectScope = this
+    }
   }
 
   /**
@@ -112,23 +120,33 @@ export class EffectScope {
    * @internal
    */
   off(): void {
-    activeEffectScope = this.parent
+    if (this._on > 0 && --this._on === 0) {
+      activeEffectScope = this.prevScope
+      this.prevScope = undefined
+    }
   }
 
   stop(fromParent?: boolean): void {
     if (this._active) {
+      this._active = false
       let i, l
       for (i = 0, l = this.effects.length; i < l; i++) {
         this.effects[i].stop()
       }
+      this.effects.length = 0
+
       for (i = 0, l = this.cleanups.length; i < l; i++) {
         this.cleanups[i]()
       }
+      this.cleanups.length = 0
+
       if (this.scopes) {
         for (i = 0, l = this.scopes.length; i < l; i++) {
           this.scopes[i].stop(true)
         }
+        this.scopes.length = 0
       }
+
       // nested scope, dereference from parent to avoid memory leaks
       if (!this.detached && this.parent && !fromParent) {
         // optimized O(1) removal
@@ -139,7 +157,6 @@ export class EffectScope {
         }
       }
       this.parent = undefined
-      this._active = false
     }
   }
 }

packages/reactivity/src/watch.ts

@@ -213,7 +213,7 @@ export function watch(
   const scope = getCurrentScope()
   const watchHandle: WatchHandle = () => {
     effect.stop()
-    if (scope) {
+    if (scope && scope.active) {
       remove(scope.effects, effect)
     }
   }

packages/runtime-core/__tests__/apiWatch.spec.ts

@@ -25,13 +25,13 @@ import {
 } from '@vue/runtime-test'
 import {
   type DebuggerEvent,
-  EffectFlags,
   ITERATE_KEY,
   type Ref,
   type ShallowRef,
   TrackOpTypes,
   TriggerOpTypes,
   effectScope,
+  onScopeDispose,
   shallowReactive,
   shallowRef,
   toRef,
@@ -1341,7 +1341,7 @@ describe('api: watch', () => {
     await nextTick()
     await nextTick()
 
-    expect(instance!.scope.effects[0].flags & EffectFlags.ACTIVE).toBeFalsy()
+    expect(instance!.scope.effects.length).toBe(0)
   })
 
   test('this.$watch should pass `this.proxy` to watch source as the first argument ', () => {
@@ -1983,4 +1983,31 @@ describe('api: watch', () => {
     expect(spy1).toHaveBeenCalled()
     expect(spy2).toHaveBeenCalled()
   })
+
+  // #12631
+  test('this.$watch w/ onScopeDispose', () => {
+    const onCleanup = vi.fn()
+    const toggle = ref(true)
+
+    const Comp = defineComponent({
+      render() {},
+      created(this: any) {
+        this.$watch(
+          () => 1,
+          function () {},
+        )
+        onScopeDispose(onCleanup)
+      },
+    })
+
+    const App = defineComponent({
+      render() {
+        return toggle.value ? h(Comp) : null
+      },
+    })
+
+    const root = nodeOps.createElement('div')
+    createApp(App).mount(root)
+    expect(onCleanup).toBeCalledTimes(0)
+  })
 })

packages/runtime-core/__tests__/componentProps.spec.ts

@@ -333,6 +333,30 @@ describe('component props', () => {
     })
   })
 
+  //#12011
+  test('replace camelize with hyphenate to handle props key', () => {
+    const Comp = {
+      props: {
+        hasB4BProp: { type: Boolean, required: true },
+      },
+      setup() {
+        return () => null
+      },
+    }
+    render(
+      h('div', {}, [
+        h(Comp, {
+          'has-b-4-b-prop': true,
+        }),
+        h(Comp, {
+          'has-b4-b-prop': true,
+        }),
+      ]),
+      nodeOps.createElement('div'),
+    )
+    expect(`Missing required prop: "hasB4BProp"`).not.toHaveBeenWarned()
+  })
+
   test('warn props mutation', () => {
     let instance: ComponentInternalInstance
     let setupProps: any

packages/runtime-core/__tests__/components/Teleport.spec.ts

@@ -87,6 +87,49 @@ describe('renderer: teleport', () => {
           `</div>`,
       )
     })
+
+    test('update before mounted with defer', async () => {
+      const root = document.createElement('div')
+      document.body.appendChild(root)
+
+      const show = ref(false)
+      const foo = ref('foo')
+      const Header = {
+        props: { foo: String },
+        setup(props: any) {
+          return () => h('div', props.foo)
+        },
+      }
+      const Footer = {
+        setup() {
+          foo.value = 'bar'
+          return () => h('div', 'Footer')
+        },
+      }
+      createDOMApp({
+        render() {
+          return show.value
+            ? [
+                h(
+                  Teleport,
+                  { to: '#targetId', defer: true },
+                  h(Header, { foo: foo.value }),
+                ),
+                h(Footer),
+                h('div', { id: 'targetId' }),
+              ]
+            : [h('div')]
+        },
+      }).mount(root)
+
+      expect(root.innerHTML).toMatchInlineSnapshot(`"<div></div>"`)
+
+      show.value = true
+      await nextTick()
+      expect(root.innerHTML).toMatchInlineSnapshot(
+        `"<!--teleport start--><!--teleport end--><div>Footer</div><div id="targetId"><div>bar</div></div>"`,
+      )
+    })
   })
 
   function runSharedTests(deferMode: boolean) {

packages/runtime-core/__tests__/helpers/renderSlot.spec.ts

@@ -32,6 +32,12 @@ describe('renderSlot', () => {
     expect(vnode.key).toBe('foo')
   })
 
+  it('should allow symbol values for slot prop key', () => {
+    const key = Symbol()
+    const vnode = renderSlot({ default: () => [h('div')] }, 'default', { key })
+    expect(vnode.key).toBe('_default')
+  })
+
   it('should render slot fallback', () => {
     const vnode = renderSlot({}, 'default', { key: 'foo' }, () => ['fallback'])
     expect(vnode.children).toEqual(['fallback'])

packages/runtime-core/__tests__/helpers/useId.spec.ts

@@ -8,6 +8,7 @@ import {
   defineAsyncComponent,
   defineComponent,
   h,
+  onServerPrefetch,
   useId,
 } from 'vue'
 import { renderToString } from '@vue/server-renderer'
@@ -145,6 +146,40 @@ describe('useId', () => {
     expect(await getOutput(() => factory(16, 0))).toBe(expected)
   })
 
+  test('components with serverPrefetch', async () => {
+    const factory = (): ReturnType<TestCaseFactory> => {
+      const SPOne = defineComponent({
+        setup() {
+          onServerPrefetch(() => {})
+          return () => h(BasicComponentWithUseId)
+        },
+      })
+
+      const SPTwo = defineComponent({
+        render() {
+          return h(BasicComponentWithUseId)
+        },
+      })
+
+      const app = createApp({
+        setup() {
+          const id1 = useId()
+          const id2 = useId()
+          return () => [id1, ' ', id2, ' ', h(SPOne), ' ', h(SPTwo)]
+        },
+      })
+      return [app, []]
+    }
+
+    const expected =
+      'v-0 v-1 ' + // root
+      'v-0-0 v-0-1 ' + // inside first async subtree
+      'v-2 v-3' // inside second async subtree
+    // assert different async resolution order does not affect id stable-ness
+    expect(await getOutput(() => factory())).toBe(expected)
+    expect(await getOutput(() => factory())).toBe(expected)
+  })
+
   test('async setup()', async () => {
     const factory = (
       delay1: number,

packages/runtime-core/__tests__/helpers/useModel.spec.ts

@@ -153,10 +153,10 @@ describe('useModel', () => {
 
     const compRender = vi.fn()
     const Comp = defineComponent({
-      props: ['fooBar'],
+      props: ['foo-bar'],
-      emits: ['update:fooBar'],
+      emits: ['update:foo-bar'],
       setup(props) {
-        foo = useModel(props, 'fooBar')
+        foo = useModel(props, 'foo-bar')
         return () => {
           compRender()
           return foo.value
@@ -192,10 +192,10 @@ describe('useModel', () => {
 
     const compRender = vi.fn()
     const Comp = defineComponent({
-      props: ['fooBar'],
+      props: ['foo-bar'],
-      emits: ['update:fooBar'],
+      emits: ['update:foo-bar'],
       setup(props) {
-        foo = useModel(props, 'fooBar')
+        foo = useModel(props, 'foo-bar')
         return () => {
           compRender()
           return foo.value

packages/runtime-core/__tests__/hydration.spec.ts

@@ -21,6 +21,7 @@ import {
   h,
   nextTick,
   onMounted,
+  onServerPrefetch,
   openBlock,
   reactive,
   ref,
@@ -518,6 +519,45 @@ describe('SSR hydration', () => {
     )
   })
 
+  test('with data-allow-mismatch component when using onServerPrefetch', async () => {
+    const Comp = {
+      template: `
+        <div>Comp2</div>
+      `,
+    }
+    let foo: any
+    const App = {
+      setup() {
+        const flag = ref(true)
+        foo = () => {
+          flag.value = false
+        }
+        onServerPrefetch(() => (flag.value = false))
+        return { flag }
+      },
+      components: {
+        Comp,
+      },
+      template: `
+        <span data-allow-mismatch>
+          <Comp v-if="flag"></Comp>
+        </span>
+      `,
+    }
+    // hydrate
+    const container = document.createElement('div')
+    container.innerHTML = await renderToString(h(App))
+    createSSRApp(App).mount(container)
+    expect(container.innerHTML).toBe(
+      '<span data-allow-mismatch=""><div>Comp2</div></span>',
+    )
+    foo()
+    await nextTick()
+    expect(container.innerHTML).toBe(
+      '<span data-allow-mismatch=""><!--v-if--></span>',
+    )
+  })
+
   test('Teleport unmount (full integration)', async () => {
     const Comp1 = {
       template: `
@@ -1284,6 +1324,84 @@ describe('SSR hydration', () => {
     resolve({})
   })
 
+  //#12362
+  test('nested async wrapper', async () => {
+    const Toggle = defineAsyncComponent(
+      () =>
+        new Promise(r => {
+          r(
+            defineComponent({
+              setup(_, { slots }) {
+                const show = ref(false)
+                onMounted(() => {
+                  nextTick(() => {
+                    show.value = true
+                  })
+                })
+                return () =>
+                  withDirectives(
+                    h('div', null, [renderSlot(slots, 'default')]),
+                    [[vShow, show.value]],
+                  )
+              },
+            }) as any,
+          )
+        }),
+    )
+
+    const Wrapper = defineAsyncComponent(() => {
+      return new Promise(r => {
+        r(
+          defineComponent({
+            render(this: any) {
+              return renderSlot(this.$slots, 'default')
+            },
+          }) as any,
+        )
+      })
+    })
+
+    const count = ref(0)
+    const fn = vi.fn()
+    const Child = {
+      setup() {
+        onMounted(() => {
+          fn()
+          count.value++
+        })
+        return () => h('div', count.value)
+      },
+    }
+
+    const App = {
+      render() {
+        return h(Toggle, null, {
+          default: () =>
+            h(Wrapper, null, {
+              default: () =>
+                h(Wrapper, null, {
+                  default: () => h(Child),
+                }),
+            }),
+        })
+      },
+    }
+
+    const root = document.createElement('div')
+    root.innerHTML = await renderToString(h(App))
+    expect(root.innerHTML).toMatchInlineSnapshot(
+      `"<div style="display:none;"><!--[--><!--[--><!--[--><div>0</div><!--]--><!--]--><!--]--></div>"`,
+    )
+
+    createSSRApp(App).mount(root)
+    await nextTick()
+    await nextTick()
+    expect(root.innerHTML).toMatchInlineSnapshot(
+      `"<div style=""><!--[--><!--[--><!--[--><div>1</div><!--]--><!--]--><!--]--></div>"`,
+    )
+    expect(fn).toBeCalledTimes(1)
+  })
+
   test('unmount async wrapper before load (fragment)', async () => {
     let resolve: any
     const AsyncComp = defineAsyncComponent(
@@ -1613,6 +1731,36 @@ describe('SSR hydration', () => {
     `)
   })
 
+  test('Suspense + transition appear', async () => {
+    const { vnode, container } = mountWithHydration(
+      `<template><div>foo</div></template>`,
+      () =>
+        h(Suspense, {}, () =>
+          h(
+            Transition,
+            { appear: true },
+            {
+              default: () => h('div', 'foo'),
+            },
+          ),
+        ),
+    )
+
+    expect(vnode.el).toBe(container.firstChild)
+    // wait for hydration to finish
+    await new Promise(r => setTimeout(r))
+
+    expect(container.firstChild).toMatchInlineSnapshot(`
+      <div
+        class="v-enter-from v-enter-active"
+      >
+        foo
+      </div>
+    `)
+    await nextTick()
+    expect(vnode.el).toBe(container.firstChild)
+  })
+
   // #10607
   test('update component stable slot (prod + optimized mode)', async () => {
     __DEV__ = false

packages/runtime-core/__tests__/rendererAttrsFallthrough.spec.ts

@@ -6,6 +6,7 @@
 import {
   Fragment,
   type FunctionalComponent,
+  Teleport,
   createBlock,
   createCommentVNode,
   createElementBlock,
@@ -391,6 +392,26 @@ describe('attribute fallthrough', () => {
     expect(`Extraneous non-emits event listeners`).toHaveBeenWarned()
   })
 
+  it('should warn when fallthrough fails on teleport root node', () => {
+    const Parent = {
+      render() {
+        return h(Child, { class: 'parent' })
+      },
+    }
+    const root = document.createElement('div')
+
+    const Child = defineComponent({
+      render() {
+        return h(Teleport, { to: root }, h('div'))
+      },
+    })
+
+    document.body.appendChild(root)
+    render(h(Parent), root)
+
+    expect(`Extraneous non-props attributes (class)`).toHaveBeenWarned()
+  })
+
   it('should dedupe same listeners when $attrs is used during render', () => {
     const click = vi.fn()
     const count = ref(0)

packages/runtime-core/__tests__/rendererOptimizedMode.spec.ts

@@ -17,6 +17,7 @@ import {
   serializeInner as inner,
   nextTick,
   nodeOps,
+  onBeforeMount,
   onBeforeUnmount,
   onUnmounted,
   openBlock,
@@ -1199,7 +1200,7 @@ describe('renderer: optimized mode', () => {
             createBlock('div', null, [
               createVNode('div', null, [
                 cache[0] ||
-                  (setBlockTracking(-1),
+                  (setBlockTracking(-1, true),
                   ((cache[0] = createVNode('div', null, [
                     createVNode(Child),
                   ])).cacheIndex = 0),
@@ -1233,4 +1234,64 @@ describe('renderer: optimized mode', () => {
     expect(inner(root)).toBe('<!--v-if-->')
     expect(spyUnmounted).toHaveBeenCalledTimes(2)
   })
+
+  // #12371
+  test('unmount children when the user calls a compiled slot', async () => {
+    const beforeMountSpy = vi.fn()
+    const beforeUnmountSpy = vi.fn()
+
+    const Child = {
+      setup() {
+        onBeforeMount(beforeMountSpy)
+        onBeforeUnmount(beforeUnmountSpy)
+        return () => 'child'
+      },
+    }
+
+    const Wrapper = {
+      setup(_: any, { slots }: SetupContext) {
+        return () => (
+          openBlock(),
+          createElementBlock('section', null, [
+            (openBlock(),
+            createElementBlock('div', { key: 1 }, [
+              createTextVNode(slots.header!() ? 'foo' : 'bar', 1 /* TEXT */),
+              renderSlot(slots, 'content'),
+            ])),
+          ])
+        )
+      },
+    }
+
+    const show = ref(false)
+    const app = createApp({
+      render() {
+        return show.value
+          ? (openBlock(),
+            createBlock(Wrapper, null, {
+              header: withCtx(() => [createVNode({})]),
+              content: withCtx(() => [createVNode(Child)]),
+              _: 1,
+            }))
+          : createCommentVNode('v-if', true)
+      },
+    })
+
+    app.mount(root)
+    expect(inner(root)).toMatchInlineSnapshot(`"<!--v-if-->"`)
+    expect(beforeMountSpy).toHaveBeenCalledTimes(0)
+    expect(beforeUnmountSpy).toHaveBeenCalledTimes(0)
+
+    show.value = true
+    await nextTick()
+    expect(inner(root)).toMatchInlineSnapshot(
+      `"<section><div>foochild</div></section>"`,
+    )
+    expect(beforeMountSpy).toHaveBeenCalledTimes(1)
+
+    show.value = false
+    await nextTick()
+    expect(inner(root)).toBe('<!--v-if-->')
+    expect(beforeUnmountSpy).toHaveBeenCalledTimes(1)
+  })
 })

packages/runtime-core/__tests__/rendererTemplateRef.spec.ts

@@ -1,4 +1,6 @@
 import {
+  KeepAlive,
+  defineAsyncComponent,
   defineComponent,
   h,
   nextTick,
@@ -217,6 +219,7 @@ describe('api: template refs', () => {
     }
     render(h(Comp), root)
     expect(state.refKey).toBe(root.children[0])
+    expect('Template ref "refKey" used on a non-ref value').toHaveBeenWarned()
   })
 
   test('multiple root refs', () => {
@@ -537,4 +540,68 @@ describe('api: template refs', () => {
       '<div><div>[object Object],[object Object]</div><ul><li>2</li><li>3</li></ul></div>',
     )
   })
+
+  test('with async component which nested in KeepAlive', async () => {
+    const AsyncComp = defineAsyncComponent(
+      () =>
+        new Promise(resolve =>
+          setTimeout(() =>
+            resolve(
+              defineComponent({
+                setup(_, { expose }) {
+                  expose({
+                    name: 'AsyncComp',
+                  })
+                  return () => h('div')
+                },
+              }) as any,
+            ),
+          ),
+        ),
+    )
+
+    const Comp = defineComponent({
+      setup(_, { expose }) {
+        expose({
+          name: 'Comp',
+        })
+        return () => h('div')
+      },
+    })
+
+    const toggle = ref(false)
+    const instanceRef = ref<any>(null)
+
+    const App = {
+      render: () => {
+        return h(KeepAlive, () =>
+          toggle.value
+            ? h(AsyncComp, { ref: instanceRef })
+            : h(Comp, { ref: instanceRef }),
+        )
+      },
+    }
+
+    const root = nodeOps.createElement('div')
+    render(h(App), root)
+    expect(instanceRef.value.name).toBe('Comp')
+
+    // switch to async component
+    toggle.value = true
+    await nextTick()
+    expect(instanceRef.value).toBe(null)
+
+    await new Promise(r => setTimeout(r))
+    expect(instanceRef.value.name).toBe('AsyncComp')
+
+    // switch back to normal component
+    toggle.value = false
+    await nextTick()
+    expect(instanceRef.value.name).toBe('Comp')
+
+    // switch to async component again
+    toggle.value = true
+    await nextTick()
+    expect(instanceRef.value.name).toBe('AsyncComp')
+  })
 })

packages/runtime-core/__tests__/vnode.spec.ts

@@ -629,7 +629,7 @@ describe('vnode', () => {
       const vnode =
         (openBlock(),
         createBlock('div', null, [
-          setBlockTracking(-1),
+          setBlockTracking(-1, true),
           (vnode1 = (openBlock(), createBlock('div'))),
           setBlockTracking(1),
           vnode1,

packages/runtime-core/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vue/runtime-core",
-  "version": "3.5.11",
+  "version": "3.5.13",
   "description": "@vue/runtime-core",
   "main": "index.js",
   "module": "dist/runtime-core.esm-bundler.js",

packages/runtime-core/src/apiDefineComponent.ts

@@ -265,7 +265,7 @@ export function defineComponent<
         Mixin,
         Extends,
         ResolvedEmits,
-        RuntimeEmitsKeys,
+        {},
         {},
         false,
         InjectOptions,

packages/runtime-core/src/apiSetupHelpers.ts

@@ -149,9 +149,7 @@ export function defineEmits() {
   return null as any
 }
 
-export type ComponentTypeEmits =
+export type ComponentTypeEmits = ((...args: any[]) => any) | Record<string, any>
-  | ((...args: any[]) => any)
-  | Record<string, any[]>
 
 type RecordToUnion<T extends Record<string, any>> = T[keyof T]
 
@@ -331,21 +329,23 @@ type PropsWithDefaults<
   T,
   Defaults extends InferDefaults<T>,
   BKeys extends keyof T,
-> = Readonly<MappedOmit<T, keyof Defaults>> & {
+> = T extends unknown
-  readonly [K in keyof Defaults as K extends keyof T
+  ? Readonly<MappedOmit<T, keyof Defaults>> & {
-    ? K
+      readonly [K in keyof Defaults as K extends keyof T
-    : never]-?: K extends keyof T
+        ? K
-    ? Defaults[K] extends undefined
+        : never]-?: K extends keyof T
-      ? IfAny<Defaults[K], NotUndefined<T[K]>, T[K]>
+        ? Defaults[K] extends undefined
-      : NotUndefined<T[K]>
+          ? IfAny<Defaults[K], NotUndefined<T[K]>, T[K]>
-    : never
+          : NotUndefined<T[K]>
-} & {
+        : never
-  readonly [K in BKeys]-?: K extends keyof Defaults
+    } & {
-    ? Defaults[K] extends undefined
+      readonly [K in BKeys]-?: K extends keyof Defaults
-      ? boolean | undefined
+        ? Defaults[K] extends undefined
-      : boolean
+          ? boolean | undefined
-    : boolean
+          : boolean
-}
+        : boolean
+    }
+  : never
 
 /**
  * Vue `<script setup>` compiler macro for providing props default values when

packages/runtime-core/src/component.ts

@@ -856,11 +856,10 @@ function setupStatefulComponent(
   // 2. call setup()
   const { setup } = Component
   if (setup) {
+    pauseTracking()
     const setupContext = (instance.setupContext =
       setup.length > 1 ? createSetupContext(instance) : null)
-
     const reset = setCurrentInstance(instance)
-    pauseTracking()
     const setupResult = callWithErrorHandling(
       setup,
       instance,
@@ -870,12 +869,16 @@ function setupStatefulComponent(
         setupContext,
       ],
     )
+    const isAsyncSetup = isPromise(setupResult)
     resetTracking()
     reset()
 
-    if (isPromise(setupResult)) {
+    if ((isAsyncSetup || instance.sp) && !isAsyncWrapper(instance)) {
-      // async setup, mark as async boundary for useId()
+      // async setup / serverPrefetch, mark as async boundary for useId()
-      if (!isAsyncWrapper(instance)) markAsyncBoundary(instance)
+      markAsyncBoundary(instance)
+    }
+
+    if (isAsyncSetup) {
       setupResult.then(unsetCurrentInstance, unsetCurrentInstance)
       if (isSSR) {
         // return the promise so server-renderer can wait on it
@@ -1003,7 +1006,7 @@ export function finishComponentSetup(
           instance.vnode.props &&
           instance.vnode.props['inline-template']) ||
         Component.template ||
-        resolveMergedOptions(instance).template
+        (__FEATURE_OPTIONS_API__ && resolveMergedOptions(instance).template)
       if (template) {
         if (__DEV__) {
           startMeasure(instance, `compile`)

packages/runtime-core/src/componentOptions.ts

@@ -416,20 +416,20 @@ interface LegacyOptions<
   extends?: Extends
 
   // lifecycle
-  beforeCreate?(): void
+  beforeCreate?(): any
-  created?(): void
+  created?(): any
-  beforeMount?(): void
+  beforeMount?(): any
-  mounted?(): void
+  mounted?(): any
-  beforeUpdate?(): void
+  beforeUpdate?(): any
-  updated?(): void
+  updated?(): any
-  activated?(): void
+  activated?(): any
-  deactivated?(): void
+  deactivated?(): any
   /** @deprecated use `beforeUnmount` instead */
-  beforeDestroy?(): void
+  beforeDestroy?(): any
-  beforeUnmount?(): void
+  beforeUnmount?(): any
   /** @deprecated use `unmounted` instead */
-  destroyed?(): void
+  destroyed?(): any
-  unmounted?(): void
+  unmounted?(): any
   renderTracked?: DebuggerHook
   renderTriggered?: DebuggerHook
   errorCaptured?: ErrorCapturedHook

packages/runtime-core/src/componentProps.ts

@@ -654,6 +654,7 @@ function validateProps(
 ) {
   const resolvedValues = toRaw(props)
   const options = instance.propsOptions[0]
+  const camelizePropsKey = Object.keys(rawProps).map(key => camelize(key))
   for (const key in options) {
     let opt = options[key]
     if (opt == null) continue
@@ -662,7 +663,7 @@ function validateProps(
       resolvedValues[key],
       opt,
       __DEV__ ? shallowReadonly(resolvedValues) : resolvedValues,
-      !hasOwn(rawProps, key) && !hasOwn(rawProps, hyphenate(key)),
+      !camelizePropsKey.includes(key),
     )
   }
 }

packages/runtime-core/src/componentRenderUtils.ts

@@ -190,7 +190,7 @@ export function renderComponentRoot(
             `Extraneous non-props attributes (` +
               `${extraAttrs.join(', ')}) ` +
               `were passed to component but could not be automatically inherited ` +
-              `because component renders fragment or text root nodes.`,
+              `because component renders fragment or text or teleport root nodes.`,
           )
         }
         if (eventAttrs.length) {

packages/runtime-core/src/components/BaseTransition.ts

@@ -198,8 +198,7 @@ const BaseTransitionImpl: ComponentOptions = {
         setTransitionHooks(innerChild, enterHooks)
       }
 
-      const oldChild = instance.subTree
+      let oldInnerChild = instance.subTree && getInnerChild(instance.subTree)
-      const oldInnerChild = oldChild && getInnerChild(oldChild)
 
       // handle mode
       if (
@@ -208,7 +207,7 @@ const BaseTransitionImpl: ComponentOptions = {
         !isSameVNodeType(innerChild, oldInnerChild) &&
         recursiveGetSubtree(instance).type !== Comment
       ) {
-        const leavingHooks = resolveTransitionHooks(
+        let leavingHooks = resolveTransitionHooks(
           oldInnerChild,
           rawProps,
           state,
@@ -228,6 +227,7 @@ const BaseTransitionImpl: ComponentOptions = {
               instance.update()
             }
             delete leavingHooks.afterLeave
+            oldInnerChild = undefined
           }
           return emptyPlaceholder(child)
         } else if (mode === 'in-out' && innerChild.type !== Comment) {
@@ -238,18 +238,27 @@ const BaseTransitionImpl: ComponentOptions = {
           ) => {
             const leavingVNodesCache = getLeavingNodesForType(
               state,
-              oldInnerChild,
+              oldInnerChild!,
             )
-            leavingVNodesCache[String(oldInnerChild.key)] = oldInnerChild
+            leavingVNodesCache[String(oldInnerChild!.key)] = oldInnerChild!
             // early removal callback
             el[leaveCbKey] = () => {
               earlyRemove()
               el[leaveCbKey] = undefined
               delete enterHooks.delayedLeave
+              oldInnerChild = undefined
+            }
+            enterHooks.delayedLeave = () => {
+              delayedLeave()
+              delete enterHooks.delayedLeave
+              oldInnerChild = undefined
             }
-            enterHooks.delayedLeave = delayedLeave
           }
+        } else {
+          oldInnerChild = undefined
         }
+      } else if (oldInnerChild) {
+        oldInnerChild = undefined
       }
 
       return child

packages/runtime-core/src/components/Teleport.ts

@@ -147,7 +147,7 @@ export const TeleportImpl = {
           }
           if (!disabled) {
             mount(target, targetAnchor)
-            updateCssVars(n2)
+            updateCssVars(n2, false)
           }
         } else if (__DEV__ && !disabled) {
           warn(
@@ -160,15 +160,36 @@ export const TeleportImpl = {
 
       if (disabled) {
         mount(container, mainAnchor)
-        updateCssVars(n2)
+        updateCssVars(n2, true)
       }
 
       if (isTeleportDeferred(n2.props)) {
-        queuePostRenderEffect(mountToTarget, parentSuspense)
+        queuePostRenderEffect(() => {
+          mountToTarget()
+          n2.el!.__isMounted = true
+        }, parentSuspense)
       } else {
         mountToTarget()
       }
     } else {
+      if (isTeleportDeferred(n2.props) && !n1.el!.__isMounted) {
+        queuePostRenderEffect(() => {
+          TeleportImpl.process(
+            n1,
+            n2,
+            container,
+            anchor,
+            parentComponent,
+            parentSuspense,
+            namespace,
+            slotScopeIds,
+            optimized,
+            internals,
+          )
+          delete n1.el!.__isMounted
+        }, parentSuspense)
+        return
+      }
       // update content
       n2.el = n1.el
       n2.targetStart = n1.targetStart
@@ -267,7 +288,7 @@ export const TeleportImpl = {
           )
         }
       }
-      updateCssVars(n2)
+      updateCssVars(n2, disabled)
     }
   },
 
@@ -389,12 +410,13 @@ function hydrateTeleport(
     querySelector,
   ))
   if (target) {
+    const disabled = isTeleportDisabled(vnode.props)
     // if multiple teleports rendered to the same target element, we need to
     // pick up from where the last teleport finished instead of the first node
     const targetNode =
       (target as TeleportTargetElement)._lpa || target.firstChild
     if (vnode.shapeFlag & ShapeFlags.ARRAY_CHILDREN) {
-      if (isTeleportDisabled(vnode.props)) {
+      if (disabled) {
         vnode.anchor = hydrateChildren(
           nextSibling(node),
           vnode,
@@ -446,7 +468,7 @@ function hydrateTeleport(
         )
       }
     }
-    updateCssVars(vnode)
+    updateCssVars(vnode, disabled)
   }
   return vnode.anchor && nextSibling(vnode.anchor as Node)
 }
@@ -462,13 +484,20 @@ export const Teleport = TeleportImpl as unknown as {
   }
 }
 
-function updateCssVars(vnode: VNode) {
+function updateCssVars(vnode: VNode, isDisabled: boolean) {
   // presence of .ut method indicates owner component uses css vars.
   // code path here can assume browser environment.
   const ctx = vnode.ctx
   if (ctx && ctx.ut) {
-    let node = vnode.targetStart
+    let node, anchor
-    while (node && node !== vnode.targetAnchor) {
+    if (isDisabled) {
+      node = vnode.el
+      anchor = vnode.anchor
+    } else {
+      node = vnode.targetStart
+      anchor = vnode.targetAnchor
+    }
+    while (node && node !== anchor) {
       if (node.nodeType === 1) node.setAttribute('data-v-owner', ctx.uid)
       node = node.nextSibling
     }

packages/runtime-core/src/helpers/renderSlot.ts

@@ -14,7 +14,7 @@ import {
   isVNode,
   openBlock,
 } from '../vnode'
-import { PatchFlags, SlotFlags } from '@vue/shared'
+import { PatchFlags, SlotFlags, isSymbol } from '@vue/shared'
 import { warn } from '../warning'
 import { isAsyncWrapper } from '../apiAsyncComponent'
 
@@ -72,15 +72,16 @@ export function renderSlot(
   }
   openBlock()
   const validSlotContent = slot && ensureValidVNode(slot(props))
+  const slotKey =
+    props.key ||
+    // slot content array of a dynamic conditional slot may have a branch
+    // key attached in the `createSlots` helper, respect that
+    (validSlotContent && (validSlotContent as any).key)
   const rendered = createBlock(
     Fragment,
     {
       key:
-        (props.key ||
+        (slotKey && !isSymbol(slotKey) ? slotKey : `_${name}`) +
-          // slot content array of a dynamic conditional slot may have a branch
-          // key attached in the `createSlots` helper, respect that
-          (validSlotContent && (validSlotContent as any).key) ||
-          `_${name}`) +
         // #7256 force differentiate fallback content from actual content
         (!validSlotContent && fallback ? '_fb' : ''),
     },

packages/runtime-core/src/helpers/useModel.ts

@@ -28,14 +28,14 @@ export function useModel(
     return ref() as any
   }
 
-  if (__DEV__ && !(i.propsOptions[0] as NormalizedProps)[name]) {
+  const camelizedName = camelize(name)
+  if (__DEV__ && !(i.propsOptions[0] as NormalizedProps)[camelizedName]) {
     warn(`useModel() called with prop "${name}" which is not declared.`)
     return ref() as any
   }
 
-  const camelizedName = camelize(name)
   const hyphenatedName = hyphenate(name)
-  const modifiers = getModelModifiers(props, name)
+  const modifiers = getModelModifiers(props, camelizedName)
 
   const res = customRef((track, trigger) => {
     let localValue: any
@@ -43,7 +43,7 @@ export function useModel(
     let prevEmittedValue: any
 
     watchSyncEffect(() => {
-      const propValue = props[name]
+      const propValue = props[camelizedName]
       if (hasChanged(localValue, propValue)) {
         localValue = propValue
         trigger()

packages/runtime-core/src/hydration.ts

@@ -11,7 +11,7 @@ import {
   normalizeVNode,
 } from './vnode'
 import { flushPostFlushCbs } from './scheduler'
-import type { ComponentInternalInstance } from './component'
+import type { ComponentInternalInstance, ComponentOptions } from './component'
 import { invokeDirectiveHook } from './directives'
 import { warn } from './warning'
 import {
@@ -41,6 +41,7 @@ import {
 import type { TeleportImpl, TeleportVNode } from './components/Teleport'
 import { isAsyncWrapper } from './apiAsyncComponent'
 import { isReactive } from '@vue/reactivity'
+import { updateHOCHostEl } from './componentRenderUtils'
 
 export type RootHydrateFunction = (
   vnode: VNode<Node, Element>,
@@ -307,7 +308,10 @@ export function createHydrationFunctions(
           // if component is async, it may get moved / unmounted before its
           // inner component is loaded, so we need to give it a placeholder
           // vnode that matches its adopted DOM.
-          if (isAsyncWrapper(vnode)) {
+          if (
+            isAsyncWrapper(vnode) &&
+            !(vnode.type as ComponentOptions).__asyncResolved
+          ) {
             let subTree
             if (isFragmentStart) {
               subTree = createVNode(Fragment)
@@ -385,7 +389,10 @@ export function createHydrationFunctions(
       let needCallTransitionHooks = false
       if (isTemplateNode(el)) {
         needCallTransitionHooks =
-          needTransition(parentSuspense, transition) &&
+          needTransition(
+            null, // no need check parentSuspense in hydration
+            transition,
+          ) &&
           parentComponent &&
           parentComponent.vnode.props &&
           parentComponent.vnode.props.appear
@@ -713,6 +720,11 @@ export function createHydrationFunctions(
       getContainerType(container),
       slotScopeIds,
     )
+    // the component vnode's el should be updated when a mismatch occurs.
+    if (parentComponent) {
+      parentComponent.vnode.el = vnode.el
+      updateHOCHostEl(parentComponent, vnode.el)
+    }
     return next
   }
 

packages/runtime-core/src/hydrationStrategies.ts

@@ -1,6 +1,13 @@
-import { isString } from '@vue/shared'
+import { getGlobalThis, isString } from '@vue/shared'
 import { DOMNodeTypes, isComment } from './hydration'
 
+// Polyfills for Safari support
+// see https://caniuse.com/requestidlecallback
+const requestIdleCallback: Window['requestIdleCallback'] =
+  getGlobalThis().requestIdleCallback || (cb => setTimeout(cb, 1))
+const cancelIdleCallback: Window['cancelIdleCallback'] =
+  getGlobalThis().cancelIdleCallback || (id => clearTimeout(id))
+
 /**
  * A lazy hydration strategy for async components.
  * @param hydrate - call this to perform the actual hydration.

packages/runtime-core/src/rendererTemplateRef.ts

@@ -15,7 +15,7 @@ import { isRef, toRaw } from '@vue/reactivity'
 import { ErrorCodes, callWithErrorHandling } from './errorHandling'
 import type { SchedulerJob } from './scheduler'
 import { queuePostRenderEffect } from './renderer'
-import { getComponentPublicInstance } from './component'
+import { type ComponentOptions, getComponentPublicInstance } from './component'
 import { knownTemplateRefs } from './helpers/useTemplateRef'
 
 /**
@@ -42,8 +42,18 @@ export function setRef(
   }
 
   if (isAsyncWrapper(vnode) && !isUnmount) {
-    // when mounting async components, nothing needs to be done,
+    // #4999 if an async component already resolved and cached by KeepAlive,
-    // because the template ref is forwarded to inner component
+    // we need to set the ref to inner component
+    if (
+      vnode.shapeFlag & ShapeFlags.COMPONENT_KEPT_ALIVE &&
+      (vnode.type as ComponentOptions).__asyncResolved &&
+      vnode.component!.subTree.component
+    ) {
+      setRef(rawRef, oldRawRef, parentSuspense, vnode.component!.subTree)
+    }
+
+    // otherwise, nothing needs to be done because the template ref
+    // is forwarded to inner component
     return
   }
 
@@ -69,8 +79,17 @@ export function setRef(
     setupState === EMPTY_OBJ
       ? () => false
       : (key: string) => {
-          if (__DEV__ && knownTemplateRefs.has(rawSetupState[key] as any)) {
+          if (__DEV__) {
-            return false
+            if (hasOwn(rawSetupState, key) && !isRef(rawSetupState[key])) {
+              warn(
+                `Template ref "${key}" used on a non-ref value. ` +
+                  `It will not work in the production build.`,
+              )
+            }
+
+            if (knownTemplateRefs.has(rawSetupState[key] as any)) {
+              return false
+            }
           }
           return hasOwn(rawSetupState, key)
         }

packages/runtime-core/src/vnode.ts

@@ -301,7 +301,7 @@ export let isBlockTreeEnabled = 1
  *
  * ``` js
  * _cache[1] || (
- *   setBlockTracking(-1),
+ *   setBlockTracking(-1, true),
  *   _cache[1] = createVNode(...),
  *   setBlockTracking(1),
  *   _cache[1]
@@ -310,11 +310,11 @@ export let isBlockTreeEnabled = 1
  *
  * @private
  */
-export function setBlockTracking(value: number): void {
+export function setBlockTracking(value: number, inVOnce = false): void {
   isBlockTreeEnabled += value
-  if (value < 0 && currentBlock) {
+  if (value < 0 && currentBlock && inVOnce) {
     // mark current block so it doesn't take fast path and skip possible
-    // nested components duriung unmount
+    // nested components during unmount
     currentBlock.hasOnce = true
   }
 }

packages/runtime-dom/__tests__/customElement.spec.ts

@@ -396,6 +396,38 @@ describe('defineCustomElement', () => {
       expect(e.value).toBe('hi')
     })
 
+    // #12214
+    test('Boolean prop with default true', async () => {
+      const E = defineCustomElement({
+        props: {
+          foo: {
+            type: Boolean,
+            default: true,
+          },
+        },
+        render() {
+          return String(this.foo)
+        },
+      })
+      customElements.define('my-el-default-true', E)
+      container.innerHTML = `<my-el-default-true></my-el-default-true>`
+      const e = container.childNodes[0] as HTMLElement & { foo: any },
+        shadowRoot = e.shadowRoot as ShadowRoot
+      expect(shadowRoot.innerHTML).toBe('true')
+      e.foo = undefined
+      await nextTick()
+      expect(shadowRoot.innerHTML).toBe('true')
+      e.foo = false
+      await nextTick()
+      expect(shadowRoot.innerHTML).toBe('false')
+      e.foo = null
+      await nextTick()
+      expect(shadowRoot.innerHTML).toBe('null')
+      e.foo = ''
+      await nextTick()
+      expect(shadowRoot.innerHTML).toBe('true')
+    })
+
     test('support direct setup function syntax with extra options', () => {
       const E = defineCustomElement(
         props => {
@@ -1386,4 +1418,39 @@ describe('defineCustomElement', () => {
     await nextTick()
     expect(e.shadowRoot!.innerHTML).toBe(`false,boolean`)
   })
+
+  test('hyphenated attr removal', async () => {
+    const E = defineCustomElement({
+      props: {
+        fooBar: {
+          type: Boolean,
+        },
+      },
+      render() {
+        return this.fooBar
+      },
+    })
+    customElements.define('el-hyphenated-attr-removal', E)
+    const toggle = ref(true)
+    const Comp = {
+      render() {
+        return h('el-hyphenated-attr-removal', {
+          'foo-bar': toggle.value ? '' : null,
+        })
+      },
+    }
+    render(h(Comp), container)
+    const el = container.children[0]
+    expect(el.hasAttribute('foo-bar')).toBe(true)
+    expect((el as any).outerHTML).toBe(
+      `<el-hyphenated-attr-removal foo-bar=""></el-hyphenated-attr-removal>`,
+    )
+
+    toggle.value = false
+    await nextTick()
+    expect(el.hasAttribute('foo-bar')).toBe(false)
+    expect((el as any).outerHTML).toBe(
+      `<el-hyphenated-attr-removal></el-hyphenated-attr-removal>`,
+    )
+  })
 })

packages/runtime-dom/__tests__/helpers/useCssVars.spec.ts

@@ -7,6 +7,7 @@ import {
   defineCustomElement,
   h,
   nextTick,
+  onMounted,
   reactive,
   ref,
   render,
@@ -350,6 +351,7 @@ describe('useCssVars', () => {
     expect(() => render(h(App), root)).not.toThrow(TypeError)
     await nextTick()
     expect(target.children.length).toBe(0)
+    expect(root.children[0].outerHTML.includes('data-v-owner')).toBe(true)
   })
 
   test('with string style', async () => {
@@ -383,6 +385,44 @@ describe('useCssVars', () => {
     }
   })
 
+  test('with delay mount child', async () => {
+    const state = reactive({ color: 'red' })
+    const value = ref(false)
+    const root = document.createElement('div')
+
+    const Child = {
+      setup() {
+        onMounted(() => {
+          const childEl = root.children[0]
+          expect(getComputedStyle(childEl!).getPropertyValue(`--color`)).toBe(
+            `red`,
+          )
+        })
+        return () => h('div', { id: 'childId' })
+      },
+    }
+    const App = {
+      setup() {
+        useCssVars(() => state)
+        return () => (value.value ? h(Child) : [h('span')])
+      },
+    }
+
+    render(h(App), root)
+    await nextTick()
+    // css vars use with fallback tree
+    for (const c of [].slice.call(root.children as any)) {
+      expect((c as HTMLElement).style.getPropertyValue(`--color`)).toBe(`red`)
+    }
+
+    // mount child
+    value.value = true
+    await nextTick()
+    for (const c of [].slice.call(root.children as any)) {
+      expect((c as HTMLElement).style.getPropertyValue(`--color`)).toBe(`red`)
+    }
+  })
+
   // #8826
   test('with custom element', async () => {
     const state = reactive({ color: 'red' })
@@ -404,4 +444,25 @@ describe('useCssVars', () => {
       `<css-vars-ce style="--color: red;"></css-vars-ce>`,
     )
   })
+
+  test('should set vars before child component onMount hook', () => {
+    const state = reactive({ color: 'red' })
+    const root = document.createElement('div')
+    let colorInOnMount
+
+    const App = {
+      setup() {
+        useCssVars(() => state)
+        onMounted(() => {
+          colorInOnMount = (
+            root.children[0] as HTMLElement
+          ).style.getPropertyValue(`--color`)
+        })
+        return () => h('div')
+      },
+    }
+
+    render(h(App), root)
+    expect(colorInOnMount).toBe(`red`)
+  })
 })

packages/runtime-dom/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vue/runtime-dom",
-  "version": "3.5.11",
+  "version": "3.5.13",
   "description": "@vue/runtime-dom",
   "main": "index.js",
   "module": "dist/runtime-dom.esm-bundler.js",

packages/runtime-dom/src/apiCustomElement.ts

@@ -505,6 +505,8 @@ export class VueElement
       }
       // reflect
       if (shouldReflect) {
+        const ob = this._ob
+        ob && ob.disconnect()
         if (val === true) {
           this.setAttribute(hyphenate(key), '')
         } else if (typeof val === 'string' || typeof val === 'number') {
@@ -512,6 +514,7 @@ export class VueElement
         } else if (!val) {
           this.removeAttribute(hyphenate(key))
         }
+        ob && ob.observe(this, { attributes: true })
       }
     }
   }

packages/runtime-dom/src/components/Transition.ts

@@ -181,7 +181,13 @@ export function resolveTransitionProps(
     onAppearCancelled = onEnterCancelled,
   } = baseProps
 
-  const finishEnter = (el: Element, isAppear: boolean, done?: () => void) => {
+  const finishEnter = (
+    el: Element & { _enterCancelled?: boolean },
+    isAppear: boolean,
+    done?: () => void,
+    isCancelled?: boolean,
+  ) => {
+    el._enterCancelled = isCancelled
     removeTransitionClass(el, isAppear ? appearToClass : enterToClass)
     removeTransitionClass(el, isAppear ? appearActiveClass : enterActiveClass)
     done && done()
@@ -240,7 +246,10 @@ export function resolveTransitionProps(
     },
     onEnter: makeEnterHook(false),
     onAppear: makeEnterHook(true),
-    onLeave(el: Element & { _isLeaving?: boolean }, done) {
+    onLeave(
+      el: Element & { _isLeaving?: boolean; _enterCancelled?: boolean },
+      done,
+    ) {
       el._isLeaving = true
       const resolve = () => finishLeave(el, done)
       addTransitionClass(el, leaveFromClass)
@@ -249,9 +258,14 @@ export function resolveTransitionProps(
       }
       // add *-leave-active class before reflow so in the case of a cancelled enter transition
       // the css will not get the final state (#10677)
-      addTransitionClass(el, leaveActiveClass)
+      if (!el._enterCancelled) {
-      // force reflow so *-leave-from classes immediately take effect (#2593)
+        // force reflow so *-leave-from classes immediately take effect (#2593)
-      forceReflow()
+        forceReflow()
+        addTransitionClass(el, leaveActiveClass)
+      } else {
+        addTransitionClass(el, leaveActiveClass)
+        forceReflow()
+      }
       nextFrame(() => {
         if (!el._isLeaving) {
           // cancelled
@@ -269,11 +283,11 @@ export function resolveTransitionProps(
       callHook(onLeave, [el, resolve])
     },
     onEnterCancelled(el) {
-      finishEnter(el, false)
+      finishEnter(el, false, undefined, true)
       callHook(onEnterCancelled, [el])
     },
     onAppearCancelled(el) {
-      finishEnter(el, true)
+      finishEnter(el, true, undefined, true)
       callHook(onAppearCancelled, [el])
     },
     onLeaveCancelled(el) {

packages/runtime-dom/src/directives/vModel.ts

@@ -160,7 +160,7 @@ export const vModelCheckbox: ModelDirective<HTMLInputElement> = {
 
 function setChecked(
   el: HTMLInputElement,
-  { value }: DirectiveBinding,
+  { value, oldValue }: DirectiveBinding,
   vnode: VNode,
 ) {
   // store the v-model value on the element so it can be accessed by the
@@ -173,6 +173,7 @@ function setChecked(
   } else if (isSet(value)) {
     checked = value.has(vnode.props!.value)
   } else {
+    if (value === oldValue) return
     checked = looseEqual(value, getCheckboxValue(el, true))
   }
 

packages/runtime-dom/src/helpers/useCssVars.ts

@@ -3,13 +3,14 @@ import {
   Static,
   type VNode,
   getCurrentInstance,
-  onBeforeMount,
+  onBeforeUpdate,
   onMounted,
   onUnmounted,
+  queuePostFlushCb,
   warn,
-  watchPostEffect,
+  watch,
 } from '@vue/runtime-core'
-import { ShapeFlags } from '@vue/shared'
+import { NOOP, ShapeFlags } from '@vue/shared'
 
 export const CSS_VAR_TEXT: unique symbol = Symbol(__DEV__ ? 'CSS_VAR_TEXT' : '')
 /**
@@ -48,11 +49,15 @@ export function useCssVars(getter: (ctx: any) => Record<string, string>): void {
     updateTeleports(vars)
   }
 
-  onBeforeMount(() => {
+  // handle cases where child component root is affected
-    watchPostEffect(setVars)
+  // and triggers reflow in onMounted
+  onBeforeUpdate(() => {
+    queuePostFlushCb(setVars)
   })
 
   onMounted(() => {
+    // run setVars synchronously here, but run as post-effect on changes
+    watch(setVars, NOOP, { flush: 'post' })
     const ob = new MutationObserver(setVars)
     ob.observe(instance.subTree.el!.parentNode, { childList: true })
     onUnmounted(() => ob.disconnect())

packages/runtime-dom/src/modules/props.ts

@@ -8,6 +8,7 @@ export function patchDOMProp(
   key: string,
   value: any,
   parentComponent: any,
+  attrName?: string,
 ): void {
   // __UNSAFE__
   // Reason: potentially setting innerHTML.
@@ -106,5 +107,5 @@ export function patchDOMProp(
       )
     }
   }
-  needRemove && el.removeAttribute(key)
+  needRemove && el.removeAttribute(attrName || key)
 }

packages/runtime-dom/src/patchProp.ts

@@ -62,7 +62,7 @@ export const patchProp: DOMRendererOptions['patchProp'] = (
     (el as VueElement)._isVueCE &&
     (/[A-Z]/.test(key) || !isString(nextValue))
   ) {
-    patchDOMProp(el, camelize(key), nextValue, parentComponent)
+    patchDOMProp(el, camelize(key), nextValue, parentComponent, key)
   } else {
     // special case for <input v-model type="checkbox"> with
     // :true-value & :false-value

packages/server-renderer/__tests__/createBuffer.bench.ts

@@ -1,6 +1,10 @@
 import { bench, describe } from 'vitest'
 
-import { createBuffer } from '../src/render'
+import { createBuffer as _createBuffer } from '../src/render'
+
+// move to local const to avoid import access overhead
+// https://github.com/vitest-dev/vitest/issues/6903
+const createBuffer = _createBuffer
 
 describe('createBuffer', () => {
   let stringBuffer = createBuffer()

packages/server-renderer/__tests__/unrollBuffer.bench.ts

@@ -1,7 +1,11 @@
 import { bench, describe } from 'vitest'
 
 import { type SSRBuffer, createBuffer } from '../src/render'
-import { unrollBuffer } from '../src/renderToString'
+import { unrollBuffer as _unrollBuffer } from '../src/renderToString'
+
+// move to local const to avoid import access overhead
+// https://github.com/vitest-dev/vitest/issues/6903
+const unrollBuffer = _unrollBuffer
 
 function createSyncBuffer(levels: number, itemsPerLevel: number): SSRBuffer {
   const buffer = createBuffer()