chore: fix spelling mistakes (#13216)

[skip ci]

.github/CODE_OF_CONDUCT.md

@@ -10,4 +10,4 @@ Project maintainers have the right and responsibility to remove, edit, or reject
 
 Instances of abusive, harassing, or otherwise unacceptable behavior may be reported by opening an issue or contacting one or more of the project maintainers.
 
-This Code of Conduct is adapted from the [Contributor Covenant](http://contributor-covenant.org), version 1.0.0, available at [http://contributor-covenant.org/version/1/0/0/](http://contributor-covenant.org/version/1/0/0/)
+This Code of Conduct is adapted from the [Contributor Covenant](https://contributor-covenant.org), version 1.0.0, available at [http://contributor-covenant.org/version/1/0/0/](http://contributor-covenant.org/version/1/0/0/)

.github/CONTRIBUTING.md

@@ -36,7 +36,7 @@ Hi! I'm really excited that you are interested in contributing to Vue.js. Before
 
 ## Development Setup
 
-You will need [Node.js](http://nodejs.org) **version 12+** and [pnpm](https://pnpm.io/).
+You will need [Node.js](https://nodejs.org) **version 18+** and [pnpm](https://pnpm.io/) **version 8+**.
 
 After cloning the repo, run:
 

.github/ISSUE_TEMPLATE/config.yml

@@ -1,11 +1,8 @@
 blank_issues_enabled: false
 contact_links:
-  - name: Create new issue
-    url: https://new-issue.vuejs.org/
-    about: Please use the following link to create a new issue.
-  - name: Patreon
-    url: https://www.patreon.com/evanyou
-    about: Love Vue.js? Please consider supporting us via Patreon.
-  - name: Open Collective
-    url: https://opencollective.com/vuejs/donate
-    about: Love Vue.js? Please consider supporting us via Open Collective.
+  - name: Vue 2 has reached EOL!
+    url: https://v2.vuejs.org/eol/
+    about: Vue 2 has reached EOL and is no longer actively maintained. Click the link on the right for more details.
+  - name: Vue 2 NES by HeroDevs
+    url: https://www.herodevs.com/support/nes-vue?utm_source=vuejs-github&utm_medium=issue-form
+    about: Learn more about Vue 2 NES if you have security or compliance requirements for continued Vue 2 usage.

.github/PULL_REQUEST_TEMPLATE.md

@@ -24,7 +24,7 @@ If yes, please describe the impact and migration path for existing applications:
 
 **The PR fulfills these requirements:**
 
-- [ ] It's submitted to the `dev` branch for v2.x (or to a previous version branch), _not_ the `master` branch
+- [ ] It's submitted to the `main` branch for v2.x (or to a previous version branch)
 - [ ] When resolving a specific issue, it's referenced in the PR's title (e.g. `fix #xxx[,#xxx]`, where "xxx" is the issue number)
 - [ ] All tests are passing: https://github.com/vuejs/vue/blob/dev/.github/CONTRIBUTING.md#development-setup
 - [ ] New/updated tests are included

.github/workflows/ci.yml

@@ -15,10 +15,10 @@ jobs:
       - name: Install pnpm
         uses: pnpm/action-setup@v2
 
-      - name: Set node version to 16
+      - name: Set node version to 18
         uses: actions/setup-node@v2
         with:
-          node-version: 16
+          node-version: 18
           cache: 'pnpm'
 
       - run: pnpm install
@@ -34,10 +34,10 @@ jobs:
       - name: Install pnpm
         uses: pnpm/action-setup@v2
 
-      - name: Set node version to 16
+      - name: Set node version to 18
         uses: actions/setup-node@v2
         with:
-          node-version: 16
+          node-version: 18
           cache: 'pnpm'
 
       - run: pnpm install
@@ -56,10 +56,10 @@ jobs:
       - name: Install pnpm
         uses: pnpm/action-setup@v2
 
-      - name: Set node version to 16
+      - name: Set node version to 18
         uses: actions/setup-node@v2
         with:
-          node-version: 16
+          node-version: 18
           cache: 'pnpm'
 
       - run: pnpm install
@@ -78,10 +78,10 @@ jobs:
       - name: Install pnpm
         uses: pnpm/action-setup@v2
 
-      - name: Set node version to 16
+      - name: Set node version to 18
         uses: actions/setup-node@v2
         with:
-          node-version: 16
+          node-version: 18
           cache: 'pnpm'
 
       - run: pnpm install

CHANGELOG.md

@@ -1,3 +1,115 @@
+## [2.7.16 Swan Song](https://github.com/vuejs/vue/compare/v2.7.16-beta.2...v2.7.16) (2023-12-24)
+
+
+### Bug Fixes
+
+* **lifecycle:** ensure component effect scopes are disconnected ([56ce7f8](https://github.com/vuejs/vue/commit/56ce7f8c573116ed6683149206cf35c987249d42)), closes [#13134](https://github.com/vuejs/vue/issues/13134)
+
+
+
+## [2.7.16-beta.2](https://github.com/vuejs/vue/compare/v2.7.16-beta.1...v2.7.16-beta.2) (2023-12-14)
+
+
+### Bug Fixes
+
+* account for nested render calls ([db9c566](https://github.com/vuejs/vue/commit/db9c566032da0ec5cd758a3e8525e9733874c1e5)), closes [#13131](https://github.com/vuejs/vue/issues/13131)
+* **types:** export more types for v3 alignment (jsx / component options) ([895669f](https://github.com/vuejs/vue/commit/895669ffa01f8075a326308caa8ad6a5f69a1919)), closes [#13078](https://github.com/vuejs/vue/issues/13078) [#13128](https://github.com/vuejs/vue/issues/13128)
+
+
+
+## [2.7.16-beta.1](https://github.com/vuejs/vue/compare/v2.7.15...v2.7.16-beta.1) (2023-12-08)
+
+
+### Bug Fixes
+
+* **compiler-sfc:** check template `ref` usage,  ([#12985](https://github.com/vuejs/vue/issues/12985)) ([83d9535](https://github.com/vuejs/vue/commit/83d95351a9f809311d624fc3398e7f6829b72447)), closes [#12984](https://github.com/vuejs/vue/issues/12984)
+* **compiler-sfc:** fix rewriteDefault edge cases ([25f97a5](https://github.com/vuejs/vue/commit/25f97a5033187372e7b8c591c79336197ee5c833)), closes [#13060](https://github.com/vuejs/vue/issues/13060) [#12892](https://github.com/vuejs/vue/issues/12892) [#12906](https://github.com/vuejs/vue/issues/12906)
+* **keep-alive:** fix keep-alive memory leak ([2632249](https://github.com/vuejs/vue/commit/2632249925e632e56f6dfc8fdbcf682c82e4081b)), closes [#12827](https://github.com/vuejs/vue/issues/12827)
+* **keep-alive:** fix memory leak without breaking transition tests ([e0747f4](https://github.com/vuejs/vue/commit/e0747f40a879b4000a1959d21377b51d1f1ed988))
+* **props:** should not unwrap props that are raw refs ([08382f0](https://github.com/vuejs/vue/commit/08382f008016c3b3b93f84594266f2e191fee91d)), closes [#12930](https://github.com/vuejs/vue/issues/12930)
+* **shallowReactive:** should track value if already reactive when set in shallowReactive ([0ad8e8d](https://github.com/vuejs/vue/commit/0ad8e8d94f3a3bf4429f25850c85a6bbb2b81364))
+* **style:** always set new styles ([f5ef882](https://github.com/vuejs/vue/commit/f5ef882a781b8a62c9ca00e95006d07636567c8e)), closes [#12901](https://github.com/vuejs/vue/issues/12901) [#12946](https://github.com/vuejs/vue/issues/12946)
+* **types:** fix shallowRef's return type  ([#12979](https://github.com/vuejs/vue/issues/12979)) ([a174c29](https://github.com/vuejs/vue/commit/a174c29dab2cf655b06f7870e0ac5a78ef35ec8a)), closes [#12978](https://github.com/vuejs/vue/issues/12978)
+* **types:** fix type augmentation and compiler-sfc types w/moduleResolution: bundler ([#13107](https://github.com/vuejs/vue/issues/13107)) ([de0b97b](https://github.com/vuejs/vue/commit/de0b97b3eadae120eda505b45df2de2115dcb6f0)), closes [#13106](https://github.com/vuejs/vue/issues/13106)
+* **types:** provide types for built-in components ([3650c12](https://github.com/vuejs/vue/commit/3650c12f7d3a20f3155bc1fd2b068e84289e0d33)), closes [#13002](https://github.com/vuejs/vue/issues/13002)
+* **types:** type VNodeChildren should allow type number  ([#13067](https://github.com/vuejs/vue/issues/13067)) ([24fcf69](https://github.com/vuejs/vue/commit/24fcf69624a633d43dfc0aa5fa6b93d11de7fad5)), closes [#12973](https://github.com/vuejs/vue/issues/12973)
+* **utils:** unwrap refs when stringifying values in template ([ae3e4b1](https://github.com/vuejs/vue/commit/ae3e4b1c706b8d61a4a312ca5d23441df021b4b4)), closes [#12884](https://github.com/vuejs/vue/issues/12884) [#12888](https://github.com/vuejs/vue/issues/12888)
+* **watch:** new property addition should trigger deep watcher with getter ([6d857f5](https://github.com/vuejs/vue/commit/6d857f5bee275dc98106e3b2cbc7722f5ec0cfc0)), closes [#12967](https://github.com/vuejs/vue/issues/12967) [#12972](https://github.com/vuejs/vue/issues/12972)
+
+
+
+## [2.7.15](https://github.com/vuejs/vue/compare/v2.7.14...v2.7.15) (2023-10-23)
+
+
+### Bug Fixes
+
+* **compiler-sfc:** add semicolon after `defineProps` statement ([#12879](https://github.com/vuejs/vue/issues/12879)) ([51fef2c](https://github.com/vuejs/vue/commit/51fef2ca69459c1175e105991f60511f1996e0c8))
+* **compiler-sfc:** fix macro usage in multi-variable declaration ([#12873](https://github.com/vuejs/vue/issues/12873)) ([d27c128](https://github.com/vuejs/vue/commit/d27c128b7cb1640f3aa185a5ecdea4ff35763794))
+* **compiler-sfc:** Optimize the value of emitIdentifier ([#12851](https://github.com/vuejs/vue/issues/12851)) ([bb59751](https://github.com/vuejs/vue/commit/bb59751dd4e45afcaafd607f22505a724b1ef841))
+* **compiler-sfc:** Resolve object expression parsing errors in `v-on` ([#12862](https://github.com/vuejs/vue/issues/12862)) ([b8c8b3f](https://github.com/vuejs/vue/commit/b8c8b3fc7a211744fdabd237a1a986a1f80b7c43))
+* **lifecycle:** scope might changed when call hook ([#13070](https://github.com/vuejs/vue/issues/13070)) ([74ca5a1](https://github.com/vuejs/vue/commit/74ca5a13ba12a31580f1567e7c6d789e96730e46))
+* **patch:** clone insert hooks to avoid being mutated during iteration ([#12905](https://github.com/vuejs/vue/issues/12905)) ([c223634](https://github.com/vuejs/vue/commit/c22363425ae246ccbb8418342e94edfa270d93e5))
+* **types/sfc:** improve the type inference using `withDefaults` ([#12872](https://github.com/vuejs/vue/issues/12872)) ([099401e](https://github.com/vuejs/vue/commit/099401e227fd5ed496ff615528d1a9b3b64d4fbf))
+* **types:** correct serverPrefetch this type ([#13068](https://github.com/vuejs/vue/issues/13068)) ([67c1d26](https://github.com/vuejs/vue/commit/67c1d26cb0af3eb2db0a11fc7768a8299e7f7d58)), closes [#12488](https://github.com/vuejs/vue/issues/12488)
+
+
+
+## [2.7.14](https://github.com/vuejs/vue/compare/v2.7.13...v2.7.14) (2022-11-09)
+
+
+### Bug Fixes
+
+* **compiler-sfc:** fix template usage check edge case for v-slot destructured default value ([#12842](https://github.com/vuejs/vue/issues/12842)) ([5e3d4e9](https://github.com/vuejs/vue/commit/5e3d4e90cdf92ec0a72bbb2bd44125f1faafae1d)), closes [#12841](https://github.com/vuejs/vue/issues/12841)
+* **provide/inject:** do not mutate original provide options during merge ([d1899ca](https://github.com/vuejs/vue/commit/d1899caf688de961e63e7a0d56f806fc4a12efd9)), closes [#12854](https://github.com/vuejs/vue/issues/12854)
+* **reactivity:** avoid using WeakMap for IE compatibility ([29b5f58](https://github.com/vuejs/vue/commit/29b5f588032600baae9854ac9a4105916a5aa648)), closes [#12837](https://github.com/vuejs/vue/issues/12837)
+* **types:** fix spreading VNodeData in tsx ([#12789](https://github.com/vuejs/vue/issues/12789)) ([f7db7f3](https://github.com/vuejs/vue/commit/f7db7f361b6356591781b9f33abbb0d5b7f9b97c)), closes [#12778](https://github.com/vuejs/vue/issues/12778)
+* **types:** stricter type condition for `EventHandlers` ([#12840](https://github.com/vuejs/vue/issues/12840)) ([0b3cf7d](https://github.com/vuejs/vue/commit/0b3cf7dda9ac605b2b9f799acacd2793e974f225)), closes [#12832](https://github.com/vuejs/vue/issues/12832)
+
+
+
+## [2.7.13](https://github.com/vuejs/vue/compare/v2.7.12...v2.7.13) (2022-10-14)
+
+
+### Bug Fixes
+
+* **effectScope:** calling off() of a detached scope should not break currentScope ([800207c](https://github.com/vuejs/vue/commit/800207c473c7d6dfcdc883100a3d443fc5ad2e39)), closes [#12825](https://github.com/vuejs/vue/issues/12825)
+* **types:** style attribute svg ([#12800](https://github.com/vuejs/vue/issues/12800)) ([8e26261](https://github.com/vuejs/vue/commit/8e262618cdc3251ca9630b17de4a000567ffb007))
+* **watch:** avoid traversing objects that are marked non-reactive ([#12806](https://github.com/vuejs/vue/issues/12806)) ([5960f05](https://github.com/vuejs/vue/commit/5960f05c69099c174062b6672c7a21d717a3bccf))
+
+
+
+## [2.7.12](https://github.com/vuejs/vue/compare/v2.7.11...v2.7.12) (2022-10-12)
+
+
+### Reverts
+
+* Revert "fix(setup): setup hook should be called before beforeCreate" ([e80cd09](https://github.com/vuejs/vue/commit/e80cd09fff570df57d608f8f5aaccee6d7f31917)), closes [#12802](https://github.com/vuejs/vue/issues/12802) [#12821](https://github.com/vuejs/vue/issues/12821) [#12822](https://github.com/vuejs/vue/issues/12822)
+
+
+
+## [2.7.11](https://github.com/vuejs/vue/compare/v2.7.10...v2.7.11) (2022-10-11)
+
+
+### Bug Fixes
+
+* **build:** enforce LF line ending in built files ([738f4b3](https://github.com/vuejs/vue/commit/738f4b3c570dc3a1818924a203a9f8e4b1ec90f0)), closes [#12819](https://github.com/vuejs/vue/issues/12819)
+* **compiler-sfc:** export parseComponent for compat with fork-ts-checker-webpack-plugin ([0d6d972](https://github.com/vuejs/vue/commit/0d6d972b32521fd18eb853b1073c0a19859a499a)), closes [#12719](https://github.com/vuejs/vue/issues/12719)
+* **reactivity:** check skip first before checking ref when creating observer ([#12813](https://github.com/vuejs/vue/issues/12813)) ([5d26f81](https://github.com/vuejs/vue/commit/5d26f815c643d41e6ca6f29329593223b981fc24)), closes [#12812](https://github.com/vuejs/vue/issues/12812)
+* **reactivity:** use WeakMap for proxy/raw checks, compat with non-extensible objects ([4a0d88e](https://github.com/vuejs/vue/commit/4a0d88e46e4180edc7f22e36c25df3f8ac5d60d2)), closes [#12799](https://github.com/vuejs/vue/issues/12799) [#12798](https://github.com/vuejs/vue/issues/12798)
+* **setup:** setup hook should be called before beforeCreate ([e1342df](https://github.com/vuejs/vue/commit/e1342df7847a51c75192fec74e94378178e046b0)), closes [#12802](https://github.com/vuejs/vue/issues/12802)
+* **sfc:** prune returned bindings for non-TS as well ([fb13930](https://github.com/vuejs/vue/commit/fb1393009660b38046b1f6dfb532b481cc53b3b7)), closes [#12765](https://github.com/vuejs/vue/issues/12765)
+* **sfc:** remove sfc scoped deep syntax deprecation warnings ([2f335b2](https://github.com/vuejs/vue/commit/2f335b2f9d09b962f40e38740826d444e4fff073))
+* **types:** fix error with options watch ([#12779](https://github.com/vuejs/vue/issues/12779)) ([bc5b92a](https://github.com/vuejs/vue/commit/bc5b92adde147436f2adb25e457f0c967829467f)), closes [#12780](https://github.com/vuejs/vue/issues/12780)
+* **types:** support Ref and function types in tsx ref attribute ([#12759](https://github.com/vuejs/vue/issues/12759)) ([87f69aa](https://github.com/vuejs/vue/commit/87f69aa26f195390b948fbb0ff62cf954b58c82c)), closes [#12758](https://github.com/vuejs/vue/issues/12758)
+* **types:** vue 3 directive type compatibility ([#12792](https://github.com/vuejs/vue/issues/12792)) ([27eed82](https://github.com/vuejs/vue/commit/27eed829ccf9978a63b8cd989ff4c03897276bc2))
+
+
+### Performance Improvements
+
+* improve unsub perf for deps with massive amount of subs ([8880b55](https://github.com/vuejs/vue/commit/8880b55d52f8d873f79ef67436217c8752cddef5)), closes [#12696](https://github.com/vuejs/vue/issues/12696)
+
+
+
 ## [2.7.10](https://github.com/vuejs/vue/compare/v2.7.9...v2.7.10) (2022-08-23)
 
 
@@ -594,7 +706,7 @@ In addition:
 - should consider presence of normal slots when caching normalized scoped slots ([9313cf9](https://github.com/vuejs/vue/commit/9313cf91740e1d43c43cf9e73d905dbab913beb5)), closes [#9644](https://github.com/vuejs/vue/issues/9644)
 - should not swallow user catch on rejected promise in methods ([7186940](https://github.com/vuejs/vue/commit/7186940143704acc4ec046132f6a56e9c983e510)), closes [#9694](https://github.com/vuejs/vue/issues/9694)
 - should use fallback for scoped slots with single falsy v-if ([781c705](https://github.com/vuejs/vue/commit/781c70514e01bc402828946805bfad7437c7175e)), closes [#9658](https://github.com/vuejs/vue/issues/9658)
-- **ssr:** fix nested async functional componet rendering ([#9673](https://github.com/vuejs/vue/issues/9673)) ([8082d2f](https://github.com/vuejs/vue/commit/8082d2f910d963f14c151fb445e0fcc5c975cca9)), closes [#9643](https://github.com/vuejs/vue/issues/9643)
+- **ssr:** fix nested async functional component rendering ([#9673](https://github.com/vuejs/vue/issues/9673)) ([8082d2f](https://github.com/vuejs/vue/commit/8082d2f910d963f14c151fb445e0fcc5c975cca9)), closes [#9643](https://github.com/vuejs/vue/issues/9643)
 - **ssr:** not push non-async css files into map ([#9677](https://github.com/vuejs/vue/issues/9677)) ([d282400](https://github.com/vuejs/vue/commit/d28240009c4c49fb2ef42a79206f0d9ad03f736c))
 - **transition:** fix appear check for transition wrapper components ([#9668](https://github.com/vuejs/vue/issues/9668)) ([4de4649](https://github.com/vuejs/vue/commit/4de4649d9637262a9b007720b59f80ac72a5620c))
 - v-bind object should be overridable by single bindings ([#9653](https://github.com/vuejs/vue/issues/9653)) ([0b57380](https://github.com/vuejs/vue/commit/0b57380f10986c6b07e3c240acc06bfd2eddfd1b)), closes [#9641](https://github.com/vuejs/vue/issues/9641)
@@ -797,7 +909,7 @@ In addition:
 - fix single v-for child optimization ([847e493](https://github.com/vuejs/vue/commit/847e493768371cec4718969e02bdb7f8463f4e03))
 - fix v-for component with undefined value ([4748760](https://github.com/vuejs/vue/commit/47487607fbb99339038cf84990ba341c25b5e20d)), closes [#9181](https://github.com/vuejs/vue/issues/9181)
 - **lifecycle:** beforeUpdated should not be called if component is destroyed ([#9171](https://github.com/vuejs/vue/issues/9171)) ([87bad80](https://github.com/vuejs/vue/commit/87bad80f0cb9a30b95d9410120ff6e3e2022a723)), closes [#8076](https://github.com/vuejs/vue/issues/8076)
-- **types:** accept primatives and falsy values in createElement children ([#9154](https://github.com/vuejs/vue/issues/9154)) ([d780dd2](https://github.com/vuejs/vue/commit/d780dd2e2adcf71f40c086055a659a9a2b4a8282)), closes [#8498](https://github.com/vuejs/vue/issues/8498)
+- **types:** accept primitive and falsy values in createElement children ([#9154](https://github.com/vuejs/vue/issues/9154)) ([d780dd2](https://github.com/vuejs/vue/commit/d780dd2e2adcf71f40c086055a659a9a2b4a8282)), closes [#8498](https://github.com/vuejs/vue/issues/8498)
 - **v-model:** properly handle multiline v-model expressions ([#9184](https://github.com/vuejs/vue/issues/9184)) ([3d44937](https://github.com/vuejs/vue/commit/3d449376d557c4533a9664f95df3a168ecee9bfa)), closes [#9183](https://github.com/vuejs/vue/issues/9183)
 - **weex:** support data class type that is string ([#9139](https://github.com/vuejs/vue/issues/9139)) ([d8285c5](https://github.com/vuejs/vue/commit/d8285c57a613c42eddf2d4f2b75c1cea6aa4703a)), closes [#9124](https://github.com/vuejs/vue/issues/9124)
 
@@ -845,7 +957,7 @@ In addition:
 - **compiler:** wrap scoped slots v-if conditions in parens ([#9119](https://github.com/vuejs/vue/issues/9119)) ([ef8524a](https://github.com/vuejs/vue/commit/ef8524ab7db8d64ac449ce74f5858aa9d91357ad)), closes [#9114](https://github.com/vuejs/vue/issues/9114)
 - **compiler:** maybeComponent should return true when "is" attribute exists ([#8114](https://github.com/vuejs/vue/issues/8114)) ([aef2a5f](https://github.com/vuejs/vue/commit/aef2a5f3dbd5e52ec9d5ce026d7b858539057186)), closes [#8101](https://github.com/vuejs/vue/issues/8101)
 - **compiler:** normalize potential functional component children in v-for ([#8558](https://github.com/vuejs/vue/issues/8558)) ([d483a49](https://github.com/vuejs/vue/commit/d483a49c86874b2e75863b661f81feecd46ae721)), closes [#8468](https://github.com/vuejs/vue/issues/8468)
-- **compiler:** should keep newline after unary tags in <pre> ([#8965](https://github.com/vuejs/vue/issues/8965)) ([05001e6](https://github.com/vuejs/vue/commit/05001e695ebd0b0504d664197a4771463a0f5328)), closes [#8950](https://github.com/vuejs/vue/issues/8950)
+- **compiler:** should keep newline after unary tags in `<pre>`  ([#8965](https://github.com/vuejs/vue/issues/8965)) ([05001e6](https://github.com/vuejs/vue/commit/05001e695ebd0b0504d664197a4771463a0f5328)), closes [#8950](https://github.com/vuejs/vue/issues/8950)
 - **compiler:** templates inside v-pre should be rendered to HTML ([#8146](https://github.com/vuejs/vue/issues/8146)) ([ecac831](https://github.com/vuejs/vue/commit/ecac831691d27cf7a10ec73a004d3fbad7623d1a)), closes [#8041](https://github.com/vuejs/vue/issues/8041)
 - **component:** clean up memory leak after loading async component completes (fix [#8740](https://github.com/vuejs/vue/issues/8740)) ([#8755](https://github.com/vuejs/vue/issues/8755)) ([2e472c5](https://github.com/vuejs/vue/commit/2e472c5e5e559a7a4083b4164ffe0c3911ce0651))
 - **core:** avoid mutating original children when cloning vnode ([097f622](https://github.com/vuejs/vue/commit/097f6229dffc34af452b106ad2a3b58845588807)), closes [#7975](https://github.com/vuejs/vue/issues/7975)
@@ -906,7 +1018,7 @@ In addition:
 - beforeUpdate should be called before render and allow state mutation ([#7822](https://github.com/vuejs/vue/issues/7822)) ([b7445a2](https://github.com/vuejs/vue/commit/b7445a2b945dcded287601ace8e711ab5cf35ab5)), closes [#7481](https://github.com/vuejs/vue/issues/7481)
 - **codegen:** support IE11 and Edge use of "Esc" key ([#7887](https://github.com/vuejs/vue/issues/7887)) ([1bd6196](https://github.com/vuejs/vue/commit/1bd6196fb234c28754d9a27095afe0b5b84990ad)), closes [#7880](https://github.com/vuejs/vue/issues/7880)
 - correct the `has` implementation in the `_renderProxy` ([#7878](https://github.com/vuejs/vue/issues/7878)) ([7b38739](https://github.com/vuejs/vue/commit/7b387390aa917edffc0eabce0b4186ea1ef40e2c))
-- ensure init/prepatch hooks are still repsected ([de42278](https://github.com/vuejs/vue/commit/de42278d34f6a800cec5c7eb781c1b8b83a829dd)), closes [vue-router#1338](https://github.com/vue-router/issues/1338)
+- ensure init/prepatch hooks are still respected ([de42278](https://github.com/vuejs/vue/commit/de42278d34f6a800cec5c7eb781c1b8b83a829dd)), closes [vue-router#1338](https://github.com/vue-router/issues/1338)
 - invoke component node create hooks before insertion ([#7823](https://github.com/vuejs/vue/issues/7823)) ([f43ce3a](https://github.com/vuejs/vue/commit/f43ce3a5d8f73e273f2d03c9d86ea5662cda481a)), closes [#7531](https://github.com/vuejs/vue/issues/7531)
 - **observer:** invoke getters on initial observation if setter defined ([#7828](https://github.com/vuejs/vue/issues/7828)) ([7a145d8](https://github.com/vuejs/vue/commit/7a145d86430bad65271f4d6ab1344b215fefe52a))
 
@@ -937,7 +1049,7 @@ In addition:
 
 ### Bug Fixes
 
-- do not traverse VNodes when regsitering dependencies ([84a9a9d](https://github.com/vuejs/vue/commit/84a9a9d61057f6f40a9ad2bee456b39ef0a8f001)), closes [#7786](https://github.com/vuejs/vue/issues/7786)
+- do not traverse VNodes when registering dependencies ([84a9a9d](https://github.com/vuejs/vue/commit/84a9a9d61057f6f40a9ad2bee456b39ef0a8f001)), closes [#7786](https://github.com/vuejs/vue/issues/7786)
 
 ## [2.5.14](https://github.com/vuejs/vue/compare/v2.5.13...v2.5.14) (2018-03-09)
 
@@ -1133,7 +1245,7 @@ In addition:
 - properly mark slot rendered flag in production mode ([4fe1a95](https://github.com/vuejs/vue/commit/4fe1a95d2953ecf765e27677fa70ebadb176d4c3)), closes [#6997](https://github.com/vuejs/vue/issues/6997)
 - **slots:** properly handle nested named slot passing ([5a9da95](https://github.com/vuejs/vue/commit/5a9da95b8a865416f082952a48416ffc091e4078)), closes [#6996](https://github.com/vuejs/vue/issues/6996)
 - special case for static muted attribute in firefox ([f2e00f7](https://github.com/vuejs/vue/commit/f2e00f756fb540fb09ce3414289c652ce172d85c)), closes [#6887](https://github.com/vuejs/vue/issues/6887)
-- **ssr:** properly render <select v-model> initial state ([e1657fd](https://github.com/vuejs/vue/commit/e1657fd7ce49bff3c3ecad3c56ae527347505c34)), closes [#6986](https://github.com/vuejs/vue/issues/6986)
+- **ssr:** properly render `<select v-model>` initial state ([e1657fd](https://github.com/vuejs/vue/commit/e1657fd7ce49bff3c3ecad3c56ae527347505c34)), closes [#6986](https://github.com/vuejs/vue/issues/6986)
 - **ssr:** properly render textarea value ([79c0d7b](https://github.com/vuejs/vue/commit/79c0d7bcfbcd1ac492e7ceb77f5024d09efdc6b3)), closes [#6986](https://github.com/vuejs/vue/issues/6986)
 - **ssr:** should not optimize root if conditions ([4ad9a56](https://github.com/vuejs/vue/commit/4ad9a56b229b156e633f3d575cd0e99ba5e474d9)), closes [#6907](https://github.com/vuejs/vue/issues/6907)
 - **types:** improve typing for better completion ([#6886](https://github.com/vuejs/vue/issues/6886)) ([98ea0a3](https://github.com/vuejs/vue/commit/98ea0a3b48e37719f278c10a8ee5fb94d7d5db4e))
@@ -1170,14 +1282,14 @@ In addition:
 - fallback to Promise in non-DOM environments ([6d1f4cb](https://github.com/vuejs/vue/commit/6d1f4cb89a156bf5f84942b1031354aa93916cb7))
 - fix scoped CSS for nested nodes in functional components ([4216588](https://github.com/vuejs/vue/commit/421658884f7ca786747abf9b89e00925fdfdfba8))
 - handle errors in errorHandler ([2b5c83a](https://github.com/vuejs/vue/commit/2b5c83af6d8b15510424af4877d58c261ea02e16)), closes [#6714](https://github.com/vuejs/vue/issues/6714)
-- perperly handle v-if on <template> scoped slot ([68bdbf5](https://github.com/vuejs/vue/commit/68bdbf508b915872627676d6bf987bdac9e5fe97)), closes [#6725](https://github.com/vuejs/vue/issues/6725)
+- properly handle v-if on `<template>` scoped slot ([68bdbf5](https://github.com/vuejs/vue/commit/68bdbf508b915872627676d6bf987bdac9e5fe97)), closes [#6725](https://github.com/vuejs/vue/issues/6725)
 - prevent memory leak due to circular reference in vnodes ([405d8e9](https://github.com/vuejs/vue/commit/405d8e9f4c3201db2ae0e397d9191d9b94edc219)), closes [#6759](https://github.com/vuejs/vue/issues/6759)
-- properly render value on <progress> in IE/Edge ([c64f9ae](https://github.com/vuejs/vue/commit/c64f9ae1649175ee8cac1c7ecf3283897c948202)), closes [#6666](https://github.com/vuejs/vue/issues/6666)
+- properly render value on `<progress>` in IE/Edge ([c64f9ae](https://github.com/vuejs/vue/commit/c64f9ae1649175ee8cac1c7ecf3283897c948202)), closes [#6666](https://github.com/vuejs/vue/issues/6666)
 - **ref:** preserve ref on components after removing root element ([#6718](https://github.com/vuejs/vue/issues/6718)) ([6ad44e1](https://github.com/vuejs/vue/commit/6ad44e13e990951ff152a0fd7042613c5a87f1c0)), closes [#6632](https://github.com/vuejs/vue/issues/6632) [#6641](https://github.com/vuejs/vue/issues/6641)
 - resolve async component default for native dynamic import ([2876ed8](https://github.com/vuejs/vue/commit/2876ed870c5368a1767fbeddf06e94b55ebd6234)), closes [#6751](https://github.com/vuejs/vue/issues/6751)
 - **ssr:** fix hydration mismatch with adjacent text node from slots ([b080a14](https://github.com/vuejs/vue/commit/b080a14138262f0f274d0888555a11bd7387d576)), closes [vuejs/vue-loader#974](https://github.com/vuejs/vue-loader/issues/974)
 - **ssr:** handle inline template compilation error ([dff85b2](https://github.com/vuejs/vue/commit/dff85b230abda63839ed6b80d56ccfc6068b9ae0)), closes [#6766](https://github.com/vuejs/vue/issues/6766)
-- use correct ns inside <foreignObject> as root node ([cf1ff5b](https://github.com/vuejs/vue/commit/cf1ff5b0dc3d15c1e16821cb5e4fc984c74f07c1)), closes [#6642](https://github.com/vuejs/vue/issues/6642)
+- use correct ns inside `<foreignObject>` as root node ([cf1ff5b](https://github.com/vuejs/vue/commit/cf1ff5b0dc3d15c1e16821cb5e4fc984c74f07c1)), closes [#6642](https://github.com/vuejs/vue/issues/6642)
 - use MessageChannel for nextTick ([6e41679](https://github.com/vuejs/vue/commit/6e41679a96582da3e0a60bdbf123c33ba0e86b31)), closes [#6566](https://github.com/vuejs/vue/issues/6566) [#6690](https://github.com/vuejs/vue/issues/6690)
 - warn slot-scope when used as a prop ([8295f71](https://github.com/vuejs/vue/commit/8295f716657ffe516f30e84f29ca94f4a0aefabf))
 - work around old Chrome bug ([0f2cb09](https://github.com/vuejs/vue/commit/0f2cb09444e8b2a5fa41aaf8c94e6f2f43e00c2f)), closes [#6601](https://github.com/vuejs/vue/issues/6601)
@@ -1202,7 +1314,7 @@ In addition:
 - support denoting normal elements as scoped slot ([dae173d](https://github.com/vuejs/vue/commit/dae173d96d15f47de6ce6961354d5c05e4273005))
 - support RegExp in ignoredElements ([#6769](https://github.com/vuejs/vue/issues/6769)) ([795b908](https://github.com/vuejs/vue/commit/795b908095b29e76435479879c1ade7ef759ce7b))
 - **types:** further improve Vue type declarations for canonical usage ([#6391](https://github.com/vuejs/vue/issues/6391)) ([db138e2](https://github.com/vuejs/vue/commit/db138e2254d71f6b96e033acf66ba43ad269841a))
-- **v-model:** craete non-existent properties as reactive ([e1da0d5](https://github.com/vuejs/vue/commit/e1da0d585c797860533d6cb10ea3d09c7fb711fc)), closes [#5932](https://github.com/vuejs/vue/issues/5932)
+- **v-model:** create non-existent properties as reactive ([e1da0d5](https://github.com/vuejs/vue/commit/e1da0d585c797860533d6cb10ea3d09c7fb711fc)), closes [#5932](https://github.com/vuejs/vue/issues/5932)
 - **v-model:** support dynamic input type binding ([f3fe012](https://github.com/vuejs/vue/commit/f3fe012d5499f607656b152ce5fcb506c641f9f4))
 - v-on automatic key inference ([4987eeb](https://github.com/vuejs/vue/commit/4987eeb3a734a16a4978d1061f73039002d351e6))
 
@@ -1228,12 +1340,12 @@ In addition:
 - do not use MutationObserver in IE11 ([844a540](https://github.com/vuejs/vue/commit/844a540c647dfa93dc714540953524830dd3475a)), closes [#6466](https://github.com/vuejs/vue/issues/6466)
 - ensure $attrs and $listeners are always objects ([#6441](https://github.com/vuejs/vue/issues/6441)) ([59dbd4a](https://github.com/vuejs/vue/commit/59dbd4a414394a3ce581f9fbd9554da9af9e4b1d)), closes [#6263](https://github.com/vuejs/vue/issues/6263)
 - ensure outer bindings on nested HOC are properly re-applied on inner root element change ([a744497](https://github.com/vuejs/vue/commit/a7444975343f7828004d90bfb0deeb98db0f46e7))
-- handle special case for allowfullscreen on <embed> ([d77b953](https://github.com/vuejs/vue/commit/d77b95317cedae299605fb692e2c7c67796b17cb)), closes [#6202](https://github.com/vuejs/vue/issues/6202)
+- handle special case for allowfullscreen on `<embed>` ([d77b953](https://github.com/vuejs/vue/commit/d77b95317cedae299605fb692e2c7c67796b17cb)), closes [#6202](https://github.com/vuejs/vue/issues/6202)
 - inherit SVG ns on component root node ([#6511](https://github.com/vuejs/vue/issues/6511)) ([89f0d29](https://github.com/vuejs/vue/commit/89f0d29f2d541aa5a1ac9690258cd7c7ee576ef6)), closes [#6506](https://github.com/vuejs/vue/issues/6506)
 - **inject:** exclude not enumerable keys of inject object ([#6346](https://github.com/vuejs/vue/issues/6346)) ([3ee62fd](https://github.com/vuejs/vue/commit/3ee62fd59e20030dd63c08c2390e803d034928fe)), closes [#6574](https://github.com/vuejs/vue/issues/6574)
 - preserve slot attribute if not resolved by Vue ([684cd7d](https://github.com/vuejs/vue/commit/684cd7d21aa7cb9a40fb4a8542c4e08fb3801a86)), closes [#6553](https://github.com/vuejs/vue/issues/6553)
 - **provide:** provide should default to parentVal during merging ([#6473](https://github.com/vuejs/vue/issues/6473)) ([3c21675](https://github.com/vuejs/vue/commit/3c216755f6eb656c6d864265a8dc7b51b3ae971b)), closes [#6436](https://github.com/vuejs/vue/issues/6436)
-- set value as domProp for <progress> ([7116af4](https://github.com/vuejs/vue/commit/7116af4e07520040ed7328c39d0a456808bfe1e1)), closes [#6561](https://github.com/vuejs/vue/issues/6561)
+- set value as domProp for `<progress>` ([7116af4](https://github.com/vuejs/vue/commit/7116af4e07520040ed7328c39d0a456808bfe1e1)), closes [#6561](https://github.com/vuejs/vue/issues/6561)
 - **ssr:** address possible xss vector ([5091e2c](https://github.com/vuejs/vue/commit/5091e2c9847601e329ac36d17eae90bb5cb77a91))
 - **ssr:** better handle v-html hydration ([0f00f8f](https://github.com/vuejs/vue/commit/0f00f8fc2b83b964bb929b729a7c9e3675b52106)), closes [#6519](https://github.com/vuejs/vue/issues/6519)
 - **ssr:** expose context.styles when no lifecycle styles are injected ([1f52a2a](https://github.com/vuejs/vue/commit/1f52a2a9f433452c15715131ed74433a43d5cfb7)), closes [#6353](https://github.com/vuejs/vue/issues/6353)
@@ -1274,14 +1386,14 @@ In addition:
 
 - checkbox v-model="array" ignore false-value ([#6180](https://github.com/vuejs/vue/issues/6180)) ([3d14e85](https://github.com/vuejs/vue/commit/3d14e855e422b656859d1b419af43b94320fcfce)), closes [#6178](https://github.com/vuejs/vue/issues/6178)
 - **compile:** properly generate comments with special character ([#6156](https://github.com/vuejs/vue/issues/6156)) ([d03fa26](https://github.com/vuejs/vue/commit/d03fa26687605a43d9a0c3f395d1d32375f7eaee)), closes [#6150](https://github.com/vuejs/vue/issues/6150)
-- ensure looseEqual is not dependant on key enumeration order ([a8ac129](https://github.com/vuejs/vue/commit/a8ac129a5876a7eeae0137bf2f1b0968d4d6ffad)), closes [#5908](https://github.com/vuejs/vue/issues/5908)
+- ensure looseEqual is not dependent on key enumeration order ([a8ac129](https://github.com/vuejs/vue/commit/a8ac129a5876a7eeae0137bf2f1b0968d4d6ffad)), closes [#5908](https://github.com/vuejs/vue/issues/5908)
 - include boolean in isPrimitive check ([#6127](https://github.com/vuejs/vue/issues/6127)) ([be3dc9c](https://github.com/vuejs/vue/commit/be3dc9c6e923248bcf81eb8240dd4f3c168fac59)), closes [#6126](https://github.com/vuejs/vue/issues/6126)
-- **parser:** only ignore the first newline in <pre> ([082fc39](https://github.com/vuejs/vue/commit/082fc3967db4d3290e901a38504dcd9bb698e561)), closes [#6146](https://github.com/vuejs/vue/issues/6146)
+- **parser:** only ignore the first newline in `<pre>` ([082fc39](https://github.com/vuejs/vue/commit/082fc3967db4d3290e901a38504dcd9bb698e561)), closes [#6146](https://github.com/vuejs/vue/issues/6146)
 - **provide/inject:** merge provide properly from mixins ([3036551](https://github.com/vuejs/vue/commit/303655116f8ec78f3b0ac99569637ad868dfe246)), closes [#6175](https://github.com/vuejs/vue/issues/6175)
 - **provide/inject:** resolve inject properly from mixins ([#6107](https://github.com/vuejs/vue/issues/6107)) ([b0f00e3](https://github.com/vuejs/vue/commit/b0f00e31e7d06edfdc733e2e7f24d5ca448759f9)), closes [#6093](https://github.com/vuejs/vue/issues/6093)
 - **transition:** should trigger transition hooks for v-show in ie9 ([9b4dbba](https://github.com/vuejs/vue/commit/9b4dbba384bc81a99abe429476729f80cb06d19a)), closes [#5525](https://github.com/vuejs/vue/issues/5525)
 - **v-bind:** respect .prop modifier on components ([#6159](https://github.com/vuejs/vue/issues/6159)) ([06b9b0b](https://github.com/vuejs/vue/commit/06b9b0bbadcc6c5afd300ed7748294e62ba00803))
-- **v-model:** use stricter check for <select> option update ([c70addf](https://github.com/vuejs/vue/commit/c70addf7d1a8e820ed80b6ab14aace5aa7b604c5)), closes [#6112](https://github.com/vuejs/vue/issues/6112)
+- **v-model:** use stricter check for `<select>` option update ([c70addf](https://github.com/vuejs/vue/commit/c70addf7d1a8e820ed80b6ab14aace5aa7b604c5)), closes [#6112](https://github.com/vuejs/vue/issues/6112)
 - **v-on:** revert component root data.on/data.nativeOn behavior for ([1713061](https://github.com/vuejs/vue/commit/17130611261fdbab70d0e5ab45036e4b612b17fe)), closes [#6109](https://github.com/vuejs/vue/issues/6109)
 - work around IE/Edge bug when accessing document.activeElement from iframe ([fc3d7cd](https://github.com/vuejs/vue/commit/fc3d7cd7a93534d76840418467f303d4b301fbcd)), closes [#6157](https://github.com/vuejs/vue/issues/6157)
 

README.md

@@ -1,3 +1,11 @@
+## Vue 2 has reached End of Life
+
+**You are looking at the now inactive repository for Vue 2. The actively maintained repository for the latest version of Vue is [vuejs/core](https://github.com/vuejs/core).**
+
+Vue has reached End of Life on December 31st, 2023. It no longer receives new features, updates, or fixes. However, it is still available on all existing distribution channels (CDNs, package managers, Github, etc).
+
+If you are starting a new project, please start with the latest version of Vue (3.x). We also strongly recommend current Vue 2 users to upgrade ([guide](https://v3-migration.vuejs.org/)), but we also acknowledge that not all users have the bandwidth or incentive to do so. If you have to stay on Vue 2 but also have compliance or security requirements about unmaintained software, check out [Vue 2 NES](https://www.herodevs.com/support/nes-vue?utm_source=vuejs-github&utm_medium=vue2-readme).
+
 <p align="center"><a href="https://vuejs.org" target="_blank" rel="noopener noreferrer"><img width="100" src="https://vuejs.org/images/logo.png" alt="Vue logo"></a></p>
 
 <p align="center">
@@ -9,17 +17,23 @@
   <a href="https://chat.vuejs.org/"><img src="https://img.shields.io/badge/chat-on%20discord-7289da.svg?sanitize=true" alt="Chat"></a>
 </p>
 
-## This repo is for Vue 2
-
-You are looking at the repository for Vue 2. The repo for Vue 3 is [vuejs/core](https://github.com/vuejs/core).
-
 ## Sponsors
 
 Vue.js is an MIT-licensed open source project with its ongoing development made possible entirely by the support of these awesome [backers](https://github.com/vuejs/core/blob/main/BACKERS.md). If you'd like to join them, please consider [ sponsor Vue's development](https://vuejs.org/sponsor/).
 
+<p align="center">
+  <h3 align="center">Special Sponsor</h3>
+</p>
+
+<p align="center">
+  <a target="_blank" href="https://github.com/appwrite/appwrite">
+  <img alt="special sponsor appwrite" src="https://sponsors.vuejs.org/images/appwrite.svg" width="300">
+  </a>
+</p>
+
 <p align="center">
   <a target="_blank" href="https://vuejs.org/sponsor/">
-    <img alt="sponsors" src="https://sponsors.vuejs.org/sponsors.svg">
+    <img alt="sponsors" src="https://sponsors.vuejs.org/sponsors.svg?v3">
   </a>
 </p>
 
@@ -31,7 +45,7 @@ Vue (pronounced `/vjuː/`, like view) is a **progressive framework** for buildin
 
 #### Browser Compatibility
 
-Vue.js supports all browsers that are [ES5-compliant](https://kangax.github.io/compat-table/es5/) (IE8 and below are not supported).
+Vue.js supports all browsers that are [ES5-compliant](https://compat-table.github.io/compat-table/es5/) (IE8 and below are not supported).
 
 ## Ecosystem
 

dist/vue.runtime.mjs

@@ -1,76 +1,76 @@
-import Vue from './vue.runtime.common.js'
-export default Vue
-
-// this should be kept in sync with src/v3/index.ts
-export const {
-  version,
-
-  // refs
-  ref,
-  shallowRef,
-  isRef,
-  toRef,
-  toRefs,
-  unref,
-  proxyRefs,
-  customRef,
-  triggerRef,
-  computed,
-
-  // reactive
-  reactive,
-  isReactive,
-  isReadonly,
-  isShallow,
-  isProxy,
-  shallowReactive,
-  markRaw,
-  toRaw,
-  readonly,
-  shallowReadonly,
-
-  // watch
-  watch,
-  watchEffect,
-  watchPostEffect,
-  watchSyncEffect,
-
-  // effectScope
-  effectScope,
-  onScopeDispose,
-  getCurrentScope,
-
-  // provide / inject
-  provide,
-  inject,
-
-  // lifecycle
-  onBeforeMount,
-  onMounted,
-  onBeforeUpdate,
-  onUpdated,
-  onBeforeUnmount,
-  onUnmounted,
-  onErrorCaptured,
-  onActivated,
-  onDeactivated,
-  onServerPrefetch,
-  onRenderTracked,
-  onRenderTriggered,
-
-  // v2 only
-  set,
-  del,
-
-  // v3 compat
-  h,
-  getCurrentInstance,
-  useSlots,
-  useAttrs,
-  mergeDefaults,
-  nextTick,
-  useCssModule,
-  useCssVars,
-  defineComponent,
-  defineAsyncComponent
-} = Vue
+import Vue from './vue.runtime.common.js'
+export default Vue
+
+// this should be kept in sync with src/v3/index.ts
+export const {
+  version,
+
+  // refs
+  ref,
+  shallowRef,
+  isRef,
+  toRef,
+  toRefs,
+  unref,
+  proxyRefs,
+  customRef,
+  triggerRef,
+  computed,
+
+  // reactive
+  reactive,
+  isReactive,
+  isReadonly,
+  isShallow,
+  isProxy,
+  shallowReactive,
+  markRaw,
+  toRaw,
+  readonly,
+  shallowReadonly,
+
+  // watch
+  watch,
+  watchEffect,
+  watchPostEffect,
+  watchSyncEffect,
+
+  // effectScope
+  effectScope,
+  onScopeDispose,
+  getCurrentScope,
+
+  // provide / inject
+  provide,
+  inject,
+
+  // lifecycle
+  onBeforeMount,
+  onMounted,
+  onBeforeUpdate,
+  onUpdated,
+  onBeforeUnmount,
+  onUnmounted,
+  onErrorCaptured,
+  onActivated,
+  onDeactivated,
+  onServerPrefetch,
+  onRenderTracked,
+  onRenderTriggered,
+
+  // v2 only
+  set,
+  del,
+
+  // v3 compat
+  h,
+  getCurrentInstance,
+  useSlots,
+  useAttrs,
+  mergeDefaults,
+  nextTick,
+  useCssModule,
+  useCssVars,
+  defineComponent,
+  defineAsyncComponent
+} = Vue

examples/classic/elastic-header/index.html

@@ -32,7 +32,7 @@
       <draggable-header-view>
         <template slot="header">
           <h1>Elastic Draggable SVG Header</h1>
-          <p>with <a href="https://vuejs.org">Vue.js</a> + <a href="http://dynamicsjs.com">dynamics.js</a></p>
+          <p>with <a href="https://v2.vuejs.org">Vue.js</a> + <a href="http://dynamicsjs.com">dynamics.js</a></p>
         </template>
         <template slot="content">
           <p>Note this is just an effect demo - there are of course many additional details if you want to use this in production, e.g. handling responsive sizes, reload threshold and content scrolling. Those are out of scope for this quick little hack. However, the idea is that you can hide them as internal details of a Vue.js component and expose a simple Web-Component-like interface.</p>

examples/classic/todomvc/app.js

@@ -55,7 +55,7 @@ var app = new Vue({
   },
 
   // computed properties
-  // https://vuejs.org/guide/computed.html
+  // https://v2.vuejs.org/v2/guide/computed.html
   computed: {
     filteredTodos: function () {
       return filters[this.visibility](this.todos)
@@ -129,7 +129,7 @@ var app = new Vue({
 
   // a custom directive to wait for the DOM to be updated
   // before focusing on the input field.
-  // https://vuejs.org/guide/custom-directive.html
+  // https://v2.vuejs.org/v2/guide/custom-directive.html
   directives: {
     'todo-focus': function (el, binding) {
       if (binding.value) {

examples/classic/todomvc/index.html

@@ -54,8 +54,8 @@
     </section>
     <footer class="info">
       <p>Double-click to edit a todo</p>
-      <p>Written by <a href="http://evanyou.me">Evan You</a></p>
-      <p>Part of <a href="http://todomvc.com">TodoMVC</a></p>
+      <p>Written by <a href="https://evanyou.me">Evan You</a></p>
+      <p>Part of <a href="https://todomvc.com">TodoMVC</a></p>
     </footer>
 
     <script>

examples/classic/todomvc/readme.md

@@ -3,20 +3,20 @@
 > Vue.js is a library for building interactive web interfaces. 
 It provides data-driven, nestable view components with a simple and flexible API.
 
-> _[Vue.js - vuejs.org](https://vuejs.org)_
+> _[Vue.js - v2.vuejs.org](https://v2.vuejs.org)_
 
 ## Learning Vue.js
-The [Vue.js website](https://vuejs.org/) is a great resource to get started.
+The [Vue.js website](https://v2.vuejs.org/) is a great resource to get started.
 
 Here are some links you may find helpful:
 
-* [Official Guide](https://vuejs.org/guide/)
-* [API Reference](https://vuejs.org/api/)
-* [Examples](https://vuejs.org/examples/)
+* [Official Guide](https://v2.vuejs.org/guide/)
+* [API Reference](https://v2.vuejs.org/api/)
+* [Examples](https://v2.vuejs.org/examples/)
 
 Get help from other Vue.js users:
 
-* [Vue.js official forum](http://forum.vuejs.org)
+* [Vue.js official forum](https://forum.vuejs.org)
 * [Vue.js on Twitter](https://twitter.com/vuejs)
 * [Vue.js on Gitter](https://gitter.im/vuejs/vue)
 
@@ -24,4 +24,4 @@ _If you have other helpful links to share, or find any of the links above no lon
 
 ## Credit
 
-This TodoMVC application was created by [Evan You](http://evanyou.me).
+This TodoMVC application was created by [Evan You](https://evanyou.me).

package.json

@@ -1,7 +1,7 @@
 {
   "name": "vue",
-  "version": "2.7.10",
-  "packageManager": "pnpm@7.1.0",
+  "version": "2.7.16",
+  "packageManager": "pnpm@8.9.2",
   "description": "Reactive, component-oriented view layer for modern web interfaces.",
   "main": "dist/vue.runtime.common.js",
   "module": "dist/vue.runtime.esm.js",
@@ -18,19 +18,23 @@
   ],
   "exports": {
     ".": {
+      "types": "./types/index.d.ts",
       "import": {
         "node": "./dist/vue.runtime.mjs",
         "default": "./dist/vue.runtime.esm.js"
       },
-      "require": "./dist/vue.runtime.common.js",
-      "types": "./types/index.d.ts"
+      "require": "./dist/vue.runtime.common.js"
     },
     "./compiler-sfc": {
+      "types": "./compiler-sfc/index.d.ts",
       "import": "./compiler-sfc/index.mjs",
       "require": "./compiler-sfc/index.js"
     },
     "./dist/*": "./dist/*",
-    "./types/*": "./types/*",
+    "./types/*": [
+      "./types/*.d.ts",
+      "./types/*"
+    ],
     "./package.json": "./package.json"
   },
   "sideEffects": false,
@@ -87,19 +91,19 @@
     "csstype": "^3.1.0"
   },
   "devDependencies": {
-    "@babel/parser": "^7.18.4",
+    "@babel/parser": "^7.23.5",
     "@microsoft/api-extractor": "^7.25.0",
     "@rollup/plugin-alias": "^3.1.9",
     "@rollup/plugin-commonjs": "^22.0.0",
     "@rollup/plugin-node-resolve": "^13.3.0",
     "@rollup/plugin-replace": "^4.0.0",
     "@types/he": "^1.1.2",
-    "@types/node": "^17.0.41",
+    "@types/node": "^20.10.3",
     "chalk": "^4.1.2",
     "conventional-changelog-cli": "^2.2.2",
     "cross-spawn": "^7.0.3",
     "enquirer": "^2.3.6",
-    "esbuild": "^0.14.43",
+    "esbuild": "^0.19.8",
     "execa": "^4.1.0",
     "he": "^1.2.0",
     "jasmine-core": "^4.2.0",
@@ -107,7 +111,7 @@
     "karma": "^6.3.20",
     "karma-chrome-launcher": "^3.1.1",
     "karma-cli": "^2.0.0",
-    "karma-esbuild": "^2.2.4",
+    "karma-esbuild": "^2.2.5",
     "karma-jasmine": "^5.0.1",
     "lint-staged": "^12.5.0",
     "lodash": "^4.17.21",
@@ -117,16 +121,16 @@
     "prettier": "^2.6.2",
     "puppeteer": "^14.3.0",
     "rimraf": "^3.0.2",
-    "rollup": "^2.75.6",
-    "rollup-plugin-typescript2": "^0.31.2",
+    "rollup": "^2.79.1",
+    "rollup-plugin-typescript2": "^0.32.0",
     "semver": "^7.3.7",
     "shelljs": "^0.8.5",
     "terser": "^5.14.0",
     "todomvc-app-css": "^2.4.2",
     "ts-node": "^10.8.1",
     "tslib": "^2.4.0",
-    "typescript": "^4.7.3",
-    "vitest": "^0.12.10",
+    "typescript": "^4.8.4",
+    "vitest": "^1.0.4",
     "yorkie": "^2.0.0"
   }
 }

packages/compiler-sfc/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@vue/compiler-sfc",
-  "version": "2.7.10",
+  "version": "2.7.16",
   "description": "compiler-sfc for Vue 2",
   "main": "dist/compiler-sfc.js",
   "types": "dist/compiler-sfc.d.ts",
@@ -8,12 +8,12 @@
     "dist"
   ],
   "dependencies": {
-    "@babel/parser": "^7.18.4",
+    "@babel/parser": "^7.23.5",
     "postcss": "^8.4.14",
     "source-map": "^0.6.1"
   },
   "devDependencies": {
-    "@babel/types": "^7.18.4",
+    "@babel/types": "^7.23.5",
     "@types/estree": "^0.0.48",
     "@types/hash-sum": "^1.0.0",
     "@types/lru-cache": "^5.1.1",
@@ -30,5 +30,8 @@
     "pug": "^3.0.2",
     "sass": "^1.52.3",
     "stylus": "^0.58.1"
+  },
+  "optionalDependencies": {
+    "prettier": "^1.18.2 || ^2.0.0"
   }
 }

packages/compiler-sfc/src/compileScript.ts

@@ -39,7 +39,7 @@ import { walk } from 'estree-walker'
 import { RawSourceMap } from 'source-map'
 import { warnOnce } from './warn'
 import { isReservedTag } from 'web/util'
-import { bindRE, dirRE, onRE } from 'compiler/parser'
+import { bindRE, dirRE, onRE, slotRE } from 'compiler/parser'
 import { parseText } from 'compiler/parser/text-parser'
 import { DEFAULT_FILENAME } from './parseComponent'
 import {
@@ -284,11 +284,9 @@ export function compileScript(
       userImportAlias[imported] = local
     }
 
-    // template usage check is only needed in non-inline mode, so we can skip
-    // the work if inlineTemplate is true.
     let isUsedInTemplate = true
-    if (isTS && sfc.template && !sfc.template.src && !sfc.template.lang) {
-      isUsedInTemplate = isImportUsed(local, sfc)
+    if (sfc.template && !sfc.template.src && !sfc.template.lang) {
+      isUsedInTemplate = isImportUsed(local, sfc, isTS)
     }
 
     userImports[local] = {
@@ -416,7 +414,10 @@ export function compileScript(
     }
 
     if (declId) {
-      emitIdentifier = scriptSetup!.content.slice(declId.start!, declId.end!)
+      emitIdentifier =
+        declId.type === 'Identifier'
+          ? declId.name
+          : scriptSetup!.content.slice(declId.start!, declId.end!)
     }
 
     return true
@@ -782,7 +783,7 @@ export function compileScript(
     if (node.trailingComments && node.trailingComments.length > 0) {
       const lastCommentNode =
         node.trailingComments[node.trailingComments.length - 1]
-      end = lastCommentNode.end + startOffset
+      end = lastCommentNode.end! + startOffset
     }
     // locate the end of whitespace between this statement and the next
     while (end <= source.length) {
@@ -909,11 +910,11 @@ export function compileScript(
             } else {
               let start = decl.start! + startOffset
               let end = decl.end! + startOffset
-              if (i < total - 1) {
-                // not the last one, locate the start of the next
+              if (i === 0) {
+                // first one, locate the start of the next
                 end = node.declarations[i + 1].start! + startOffset
               } else {
-                // last one, locate the end of the prev
+                // not first one, locate the end of the prev
                 start = node.declarations[i - 1].end! + startOffset
               }
               s.remove(start, end)
@@ -1124,7 +1125,7 @@ export function compileScript(
       startOffset,
       `\nconst ${propsIdentifier} = __props${
         propsTypeDecl ? ` as ${genSetupPropsType(propsTypeDecl)}` : ``
-      }\n`
+      };\n`
     )
   }
   if (propsDestructureRestId) {
@@ -1132,7 +1133,7 @@ export function compileScript(
       startOffset,
       `\nconst ${propsDestructureRestId} = ${helper(
         `createPropsRestProxy`
-      )}(__props, ${JSON.stringify(Object.keys(propsDestructuredBindings))})\n`
+      )}(__props, ${JSON.stringify(Object.keys(propsDestructuredBindings))});\n`
     )
   }
 
@@ -1574,7 +1575,7 @@ function extractRuntimeEmits(
 }
 
 function extractEventNames(
-  eventName: Identifier | RestElement,
+  eventName: ArrayPattern | Identifier | ObjectPattern | RestElement,
   emits: Set<string>
 ) {
   if (
@@ -1584,14 +1585,18 @@ function extractEventNames(
   ) {
     const typeNode = eventName.typeAnnotation.typeAnnotation
     if (typeNode.type === 'TSLiteralType') {
-      if (typeNode.literal.type !== 'UnaryExpression') {
+      if (
+        typeNode.literal.type !== 'UnaryExpression' &&
+        typeNode.literal.type !== 'TemplateLiteral'
+      ) {
         emits.add(String(typeNode.literal.value))
       }
     } else if (typeNode.type === 'TSUnionType') {
       for (const t of typeNode.types) {
         if (
           t.type === 'TSLiteralType' &&
-          t.literal.type !== 'UnaryExpression'
+          t.literal.type !== 'UnaryExpression' &&
+          t.literal.type !== 'TemplateLiteral'
         ) {
           emits.add(String(t.literal.value))
         }
@@ -1782,7 +1787,7 @@ function getObjectOrArrayExpressionKeys(value: Node): string[] {
 
 const templateUsageCheckCache = new LRU<string, string>(512)
 
-function resolveTemplateUsageCheckString(sfc: SFCDescriptor) {
+function resolveTemplateUsageCheckString(sfc: SFCDescriptor, isTS: boolean) {
   const { content } = sfc.template!
   const cached = templateUsageCheckCache.get(content)
   if (cached) {
@@ -1802,6 +1807,8 @@ function resolveTemplateUsageCheckString(sfc: SFCDescriptor) {
         if (dirRE.test(name)) {
           const baseName = onRE.test(name)
             ? 'on'
+            : slotRE.test(name)
+            ? 'slot'
             : bindRE.test(name)
             ? 'bind'
             : name.replace(dirRE, '')
@@ -1809,15 +1816,17 @@ function resolveTemplateUsageCheckString(sfc: SFCDescriptor) {
             code += `,v${capitalize(camelize(baseName))}`
           }
           if (value) {
-            code += `,${processExp(value, baseName)}`
+            code += `,${processExp(value, isTS, baseName)}`
           }
+        } else if (name === 'ref') {
+          code += `,${value}`
         }
       }
     },
     chars(text) {
       const res = parseText(text)
       if (res) {
-        code += `,${processExp(res.expression)}`
+        code += `,${processExp(res.expression, isTS)}`
       }
     }
   })
@@ -1829,17 +1838,17 @@ function resolveTemplateUsageCheckString(sfc: SFCDescriptor) {
 
 const forAliasRE = /([\s\S]*?)\s+(?:in|of)\s+([\s\S]*)/
 
-function processExp(exp: string, dir?: string): string {
-  if (/ as\s+\w|<.*>|:/.test(exp)) {
+function processExp(exp: string, isTS: boolean, dir?: string): string {
+  if (isTS && / as\s+\w|<.*>|:/.test(exp)) {
     if (dir === 'slot') {
       exp = `(${exp})=>{}`
     } else if (dir === 'on') {
-      exp = `()=>{${exp}}`
+      exp = `()=>{return ${exp}}`
     } else if (dir === 'for') {
       const inMatch = exp.match(forAliasRE)
       if (inMatch) {
         const [, LHS, RHS] = inMatch
-        return processExp(`(${LHS})=>{}`) + processExp(RHS)
+        return processExp(`(${LHS})=>{}`, true) + processExp(RHS, true)
       }
     }
     let ret = ''
@@ -1867,36 +1876,38 @@ function stripTemplateString(str: string): string {
   return ''
 }
 
-function isImportUsed(local: string, sfc: SFCDescriptor): boolean {
+function isImportUsed(
+  local: string,
+  sfc: SFCDescriptor,
+  isTS: boolean
+): boolean {
   return new RegExp(
     // #4274 escape $ since it's a special char in regex
     // (and is the only regex special char that is valid in identifiers)
     `[^\\w$_]${local.replace(/\$/g, '\\$')}[^\\w$_]`
-  ).test(resolveTemplateUsageCheckString(sfc))
+  ).test(resolveTemplateUsageCheckString(sfc, isTS))
 }
 
 /**
  * Note: this comparison assumes the prev/next script are already identical,
- * and only checks the special case where <script setup lang="ts"> unused import
+ * and only checks the special case where <script setup> unused import
  * pruning result changes due to template changes.
  */
 export function hmrShouldReload(
   prevImports: Record<string, ImportBinding>,
   next: SFCDescriptor
 ): boolean {
-  if (
-    !next.scriptSetup ||
-    (next.scriptSetup.lang !== 'ts' && next.scriptSetup.lang !== 'tsx')
-  ) {
+  if (!next.scriptSetup) {
     return false
   }
 
+  const isTS = next.scriptSetup.lang === 'ts' || next.scriptSetup.lang === 'tsx'
   // for each previous import, check if its used status remain the same based on
   // the next descriptor's template
   for (const key in prevImports) {
     // if an import was previous unused, but now is used, we need to force
     // reload so that the script now includes that import.
-    if (!prevImports[key].isUsedInTemplate && isImportUsed(key, next)) {
+    if (!prevImports[key].isUsedInTemplate && isImportUsed(key, next, isTS)) {
       return true
     }
   }

packages/compiler-sfc/src/index.ts

@@ -6,6 +6,13 @@ export { compileScript } from './compileScript'
 export { generateCodeFrame } from 'compiler/codeframe'
 export { rewriteDefault } from './rewriteDefault'
 
+// For backwards compat only. Some existing tools like
+// fork-ts-checker-webpack-plugin relies on its presence for differentiating
+// between Vue 2 and Vue 3.
+// ref #12719
+// ref https://github.com/TypeStrong/fork-ts-checker-webpack-plugin/issues/765
+export { parseComponent } from './parseComponent'
+
 // types
 export { SFCParseOptions } from './parse'
 export { CompilerOptions, WarningMessage } from 'types/compiler'

packages/compiler-sfc/src/rewriteDefault.ts

@@ -42,8 +42,14 @@ export function rewriteDefault(
   }).program.body
   ast.forEach(node => {
     if (node.type === 'ExportDefaultDeclaration') {
-      if (node.declaration.type === 'ClassDeclaration') {
-        s.overwrite(node.start!, node.declaration.id.start!, `class `)
+      if (node.declaration.type === 'ClassDeclaration' && node.declaration.id) {
+        let start: number =
+          node.declaration.decorators && node.declaration.decorators.length > 0
+            ? node.declaration.decorators[
+                node.declaration.decorators.length - 1
+              ].end!
+            : node.start!
+        s.overwrite(start, node.declaration.id.start!, ` class `)
         s.append(`\nconst ${as} = ${node.declaration.id.name}`)
       } else {
         s.overwrite(node.start!, node.declaration.start!, `const ${as} = `)

packages/compiler-sfc/src/stylePlugins/scoped.ts

@@ -1,6 +1,5 @@
 import { PluginCreator, Rule, AtRule } from 'postcss'
 import selectorParser from 'postcss-selector-parser'
-import { warn } from '../warn'
 
 const animationNameRE = /^(-\w+-)?animation-name$/
 const animationRE = /^(-\w+-)?animation$/
@@ -94,10 +93,10 @@ function rewriteSelector(
     ) {
       n.value = ' '
       n.spaces.before = n.spaces.after = ''
-      warn(
-        `the >>> and /deep/ combinators have been deprecated. ` +
-          `Use :deep() instead.`
-      )
+      // warn(
+      //   `the >>> and /deep/ combinators have been deprecated. ` +
+      //     `Use :deep() instead.`
+      // )
       return false
     }
 
@@ -126,12 +125,12 @@ function rewriteSelector(
           }
           selector.removeChild(n)
         } else {
-          // DEPRECATED usage
+          // DEPRECATED usage in v3
           // .foo ::v-deep .bar -> .foo[xxxxxxx] .bar
-          warn(
-            `::v-deep usage as a combinator has ` +
-              `been deprecated. Use :deep(<inner-selector>) instead.`
-          )
+          // warn(
+          //   `::v-deep usage as a combinator has ` +
+          //     `been deprecated. Use :deep(<inner-selector>) instead.`
+          // )
           const prev = selector.at(selector.index(n) - 1)
           if (prev && isSpaceCombinator(prev)) {
             selector.removeChild(prev)

packages/compiler-sfc/test/__snapshots__/compileScript.spec.ts.snap

@@ -1,4 +1,4 @@
-// Vitest Snapshot v1
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
 exports[`SFC analyze <script> bindings > auto name inference > basic 1`] = `
 "export default {
@@ -20,7 +20,7 @@ exports[`SFC analyze <script> bindings > auto name inference > do not overwrite
 export default /*#__PURE__*/Object.assign(__default__, {
   setup(__props) {
 const a = 1
-return { a, defineComponent }
+return { a }
 }
 
 })"
@@ -93,7 +93,7 @@ exports[`SFC compile <script setup> > <script> and <script setup> co-usage > scr
 "import { defineComponent as _defineComponent } from 'vue'
 
       const __default__ = {
-        name: \\"test\\"
+        name: "test"
       }
       
 import { x } from './x'
@@ -212,7 +212,7 @@ export default {
   props: propsModel,
   setup(__props) {
 
-const props = __props
+const props = __props;
 
     
     
@@ -229,7 +229,7 @@ export default {
   props: {},
   setup(__props) {
 
-const props = __props
+const props = __props;
 
     
 return { props, x }
@@ -245,7 +245,7 @@ exports[`SFC compile <script setup> > defineProps() 1`] = `
 },
   setup(__props) {
 
-const props = __props
+const props = __props;
 
 
 const bar = 1
@@ -262,7 +262,7 @@ exports[`SFC compile <script setup> > defineProps/defineEmits in multi-variable
   emits: ['a'],
   setup(__props, { emit }) {
 
-const props = __props
+const props = __props;
 
     
     
@@ -278,7 +278,7 @@ exports[`SFC compile <script setup> > defineProps/defineEmits in multi-variable
   emits: ['a'],
   setup(__props, { emit }) {
 
-const props = __props
+const props = __props;
 
     const a = 1;
     
@@ -288,6 +288,22 @@ return { props, a, emit }
 }"
 `;
 
+exports[`SFC compile <script setup> > defineProps/defineEmits in multi-variable declaration fix #6757  1`] = `
+"export default {
+  props: ['item'],
+  emits: ['a'],
+  setup(__props, { emit }) {
+
+const props = __props;
+
+    const a = 1;
+    
+return { a, props, emit }
+}
+
+}"
+`;
+
 exports[`SFC compile <script setup> > dev mode import usage check > TS annotations 1`] = `
 "import { defineComponent as _defineComponent } from 'vue'
 import { Foo, Baz, Qux, Fred } from './x'
@@ -348,6 +364,20 @@ return { vMyDir }
 })"
 `;
 
+exports[`SFC compile <script setup> > dev mode import usage check > imported ref as template ref 1`] = `
+"import { defineComponent as _defineComponent } from 'vue'
+import { aref } from './x'
+        
+export default /*#__PURE__*/_defineComponent({
+  setup(__props) {
+
+        
+return { aref }
+}
+
+})"
+`;
+
 exports[`SFC compile <script setup> > dev mode import usage check > js template string interpolations 1`] = `
 "import { defineComponent as _defineComponent } from 'vue'
 import { VAR, VAR2, VAR3 } from './x'
@@ -537,7 +567,7 @@ exports[`SFC compile <script setup> > with TypeScript > defineEmits w/ type (exp
 export interface Emits { (e: 'foo' | 'bar'): void }
       
 export default /*#__PURE__*/_defineComponent({
-  emits: [\\"foo\\", \\"bar\\"],
+  emits: ["foo", "bar"],
   setup(__props, { emit }: { emit: ({ (e: 'foo' | 'bar'): void }), expose: any, slots: any, attrs: any }) {
 
       
@@ -553,11 +583,27 @@ exports[`SFC compile <script setup> > with TypeScript > defineEmits w/ type (exp
 export type Emits = { (e: 'foo' | 'bar'): void }
       
 export default /*#__PURE__*/_defineComponent({
-  emits: [\\"foo\\", \\"bar\\"],
+  emits: ["foo", "bar"],
   setup(__props, { emit }: { emit: ({ (e: 'foo' | 'bar'): void }), expose: any, slots: any, attrs: any }) {
 
       
       
+return { emit }
+}
+
+})"
+`;
+
+exports[`SFC compile <script setup> > with TypeScript > defineEmits w/ type (interface ts type) 1`] = `
+"import { defineComponent as _defineComponent } from 'vue'
+interface Emits { (e: 'foo'): void }
+      
+export default /*#__PURE__*/_defineComponent({
+  emits: ['foo'],
+  setup(__props, { emit }) {
+
+      
+      
 return { emit }
 }
 
@@ -569,7 +615,7 @@ exports[`SFC compile <script setup> > with TypeScript > defineEmits w/ type (int
 interface Emits { (e: 'foo' | 'bar'): void }
       
 export default /*#__PURE__*/_defineComponent({
-  emits: [\\"foo\\", \\"bar\\"],
+  emits: ["foo", "bar"],
   setup(__props, { emit }: { emit: ({ (e: 'foo' | 'bar'): void }), expose: any, slots: any, attrs: any }) {
 
       
@@ -585,7 +631,7 @@ exports[`SFC compile <script setup> > with TypeScript > defineEmits w/ type (ref
 export type Emits = (e: 'foo' | 'bar') => void
       
 export default /*#__PURE__*/_defineComponent({
-  emits: [\\"foo\\", \\"bar\\"],
+  emits: ["foo", "bar"],
   setup(__props, { emit }: { emit: ((e: 'foo' | 'bar') => void), expose: any, slots: any, attrs: any }) {
 
       
@@ -601,7 +647,7 @@ exports[`SFC compile <script setup> > with TypeScript > defineEmits w/ type (ref
 type Emits = (e: 'foo' | 'bar') => void
       
 export default /*#__PURE__*/_defineComponent({
-  emits: [\\"foo\\", \\"bar\\"],
+  emits: ["foo", "bar"],
   setup(__props, { emit }: { emit: ((e: 'foo' | 'bar') => void), expose: any, slots: any, attrs: any }) {
 
       
@@ -617,7 +663,7 @@ exports[`SFC compile <script setup> > with TypeScript > defineEmits w/ type (typ
 type Emits = { (e: 'foo' | 'bar'): void }
       
 export default /*#__PURE__*/_defineComponent({
-  emits: [\\"foo\\", \\"bar\\"],
+  emits: ["foo", "bar"],
   setup(__props, { emit }: { emit: ({ (e: 'foo' | 'bar'): void }), expose: any, slots: any, attrs: any }) {
 
       
@@ -632,7 +678,7 @@ exports[`SFC compile <script setup> > with TypeScript > defineEmits w/ type (typ
 "import { defineComponent as _defineComponent } from 'vue'
 
 export default /*#__PURE__*/_defineComponent({
-  emits: [\\"foo\\", \\"bar\\", \\"baz\\"],
+  emits: ["foo", "bar", "baz"],
   setup(__props, { emit }: { emit: ({(e: 'foo' | 'bar'): void; (e: 'baz', id: number): void;}), expose: any, slots: any, attrs: any }) {
 
       
@@ -647,7 +693,7 @@ exports[`SFC compile <script setup> > with TypeScript > defineEmits w/ type 1`]
 "import { defineComponent as _defineComponent } from 'vue'
 
 export default /*#__PURE__*/_defineComponent({
-  emits: [\\"foo\\", \\"bar\\"],
+  emits: ["foo", "bar"],
   setup(__props, { emit }: { emit: ((e: 'foo' | 'bar') => void), expose: any, slots: any, attrs: any }) {
 
       
@@ -803,7 +849,7 @@ export default /*#__PURE__*/_defineComponent({
   emits: ['a', 'b'],
   setup(__props, { emit }) {
 
-const props = __props
+const props = __props;
 
 
 
@@ -862,9 +908,9 @@ exports[`SFC compile <script setup> > with TypeScript > runtime Enum in normal s
 "import { defineComponent as _defineComponent } from 'vue'
 enum Foo { A = 123 }
         
-          export enum D { D = \\"D\\" }
-          const enum C { C = \\"C\\" }
-          enum B { B = \\"B\\" }
+          export enum D { D = "D" }
+          const enum C { C = "C" }
+          enum B { B = "B" }
         
 export default /*#__PURE__*/_defineComponent({
   setup(__props) {
@@ -892,7 +938,7 @@ const props = __props as {
         foo?: string
         bar?: number
         baz: boolean
-      }
+      };
 
       
       
@@ -914,7 +960,7 @@ export default /*#__PURE__*/_defineComponent({
   },
   setup(__props: any) {
 
-const props = __props as { foo: string, bar?: number, baz: boolean, qux(): number }
+const props = __props as { foo: string, bar?: number, baz: boolean, qux(): number };
 
       
       

packages/compiler-sfc/test/__snapshots__/cssVars.spec.ts.snap

@@ -1,11 +1,11 @@
-// Vitest Snapshot v1
+// Vitest Snapshot v1, https://vitest.dev/guide/snapshot.html
 
 exports[`CSS vars injection > codegen > <script> w/ default export 1`] = `
 "const __default__ = { setup() {} }
 import { useCssVars as _useCssVars } from 'vue'
 const __injectCSSVars__ = () => {
 _useCssVars((_vm, _setup) => ({
-  \\"xxxxxxxx-color\\": (_vm.color)
+  "xxxxxxxx-color": (_vm.color)
 }))}
 const __setup__ = __default__.setup
 __default__.setup = __setup__
@@ -23,7 +23,7 @@ exports[`CSS vars injection > codegen > <script> w/ default export in strings/co
 import { useCssVars as _useCssVars } from 'vue'
 const __injectCSSVars__ = () => {
 _useCssVars((_vm, _setup) => ({
-  \\"xxxxxxxx-color\\": (_vm.color)
+  "xxxxxxxx-color": (_vm.color)
 }))}
 const __setup__ = __default__.setup
 __default__.setup = __setup__
@@ -39,7 +39,7 @@ const __default__ = {}
 import { useCssVars as _useCssVars } from 'vue'
 const __injectCSSVars__ = () => {
 _useCssVars((_vm, _setup) => ({
-  \\"xxxxxxxx-color\\": (_vm.color)
+  "xxxxxxxx-color": (_vm.color)
 }))}
 const __setup__ = __default__.setup
 __default__.setup = __setup__
@@ -56,7 +56,7 @@ export default {
   setup(__props) {
 
 _useCssVars((_vm, _setup) => ({
-  \\"xxxxxxxx-width\\": (_setup.width)
+  "xxxxxxxx-width": (_setup.width)
 }))
 const color = 'red';const width = 100
 return { color, width }
@@ -72,10 +72,10 @@ export default {
   setup(__props) {
 
 _useCssVars((_vm, _setup) => ({
-  \\"xxxxxxxx-foo\\": (_setup.foo),
-  \\"xxxxxxxx-foo____px_\\": (_setup.foo + 'px'),
-  \\"xxxxxxxx-_a___b____2____px_\\": ((_setup.a + _setup.b) / 2 + 'px'),
-  \\"xxxxxxxx-__a___b______2___a_\\": (((_setup.a + _setup.b)) / (2 * _setup.a))
+  "xxxxxxxx-foo": (_setup.foo),
+  "xxxxxxxx-foo____px_": (_setup.foo + 'px'),
+  "xxxxxxxx-_a___b____2____px_": ((_setup.a + _setup.b) / 2 + 'px'),
+  "xxxxxxxx-__a___b______2___a_": (((_setup.a + _setup.b)) / (2 * _setup.a))
 }))
 
         let a = 100
@@ -95,7 +95,7 @@ export default {
   setup(__props) {
 
 _useCssVars((_vm, _setup) => ({
-  \\"xxxxxxxx-color\\": (_setup.color)
+  "xxxxxxxx-color": (_setup.color)
 }))
 const color = 'red'
 return { color }
@@ -111,7 +111,7 @@ export default {
   setup(__props) {
 
 _useCssVars((_vm, _setup) => ({
-  \\"xxxxxxxx-color\\": (_setup.color)
+  "xxxxxxxx-color": (_setup.color)
 }))
 
         const color = 'red'
@@ -128,8 +128,8 @@ const __default__ = {}
 import { useCssVars as _useCssVars } from 'vue'
 const __injectCSSVars__ = () => {
 _useCssVars((_vm, _setup) => ({
-  \\"xxxxxxxx-color\\": (_vm.color),
-  \\"xxxxxxxx-font_size\\": (_vm.font.size)
+  "xxxxxxxx-color": (_vm.color),
+  "xxxxxxxx-font_size": (_vm.font.size)
 }))}
 const __setup__ = __default__.setup
 __default__.setup = __setup__
@@ -150,9 +150,9 @@ export default {
   setup(__props) {
 
 _useCssVars((_vm, _setup) => ({
-  \\"xxxxxxxx-color\\": (_setup.color),
-  \\"xxxxxxxx-size\\": (_setup.size),
-  \\"xxxxxxxx-foo\\": (_vm.foo)
+  "xxxxxxxx-color": (_setup.color),
+  "xxxxxxxx-size": (_setup.size),
+  "xxxxxxxx-foo": (_vm.foo)
 }))
 
         const color = 'red'
@@ -178,7 +178,7 @@ exports[`CSS vars injection > w/ normal <script> binding analysis 1`] = `
 import { useCssVars as _useCssVars } from 'vue'
 const __injectCSSVars__ = () => {
 _useCssVars((_vm, _setup) => ({
-  \\"xxxxxxxx-size\\": (_vm.size)
+  "xxxxxxxx-size": (_vm.size)
 }))}
 const __setup__ = __default__.setup
 __default__.setup = __setup__

packages/compiler-sfc/test/compileScript.spec.ts

@@ -141,6 +141,21 @@ const myEmit = defineEmits(['foo', 'bar'])
     expect(content).toMatch(`emits: ['a'],`)
   })
 
+  // vuejs/core #6757
+  test('defineProps/defineEmits in multi-variable declaration fix #6757 ', () => {
+    const { content } = compile(`
+    <script setup>
+    const a = 1,
+          props = defineProps(['item']),
+          emit = defineEmits(['a']);
+    </script>
+  `)
+    assertCode(content)
+    expect(content).toMatch(`const a = 1;`) // test correct removal
+    expect(content).toMatch(`props: ['item'],`)
+    expect(content).toMatch(`emits: ['a'],`)
+  })
+
   test('defineProps/defineEmits in multi-variable declaration (full removal)', () => {
     const { content } = compile(`
     <script setup>
@@ -383,6 +398,19 @@ defineExpose({ foo: 123 })
       assertCode(content)
     })
 
+    test('imported ref as template ref', () => {
+      const { content } = compile(`
+        <script setup lang="ts">
+        import { aref } from './x'
+        </script>
+        <template>
+          <div ref="aref"></div>
+        </template>
+        `)
+      expect(content).toMatch(`return { aref }`)
+      assertCode(content)
+    })
+
     test('vue interpolations', () => {
       const { content } = compile(`
       <script setup lang="ts">
@@ -1081,6 +1109,19 @@ const emit = defineEmits(['a', 'b'])
       expect(content).toMatch(`emits: ["foo", "bar"]`)
     })
 
+    // https://github.com/vuejs/core/issues/5393
+    test('defineEmits w/ type (interface ts type)', () => {
+      const { content } = compile(`
+      <script setup lang="ts">
+      interface Emits { (e: 'foo'): void }
+      const emit: Emits = defineEmits(['foo'])
+      </script>
+      `)
+      assertCode(content)
+      expect(content).toMatch(`setup(__props, { emit }) {`)
+      expect(content).toMatch(`emits: ['foo']`)
+    })
+
     test('runtime Enum', () => {
       const { content, bindings } = compile(
         `<script setup lang="ts">
@@ -1571,7 +1612,23 @@ describe('SFC analyze <script> bindings', () => {
       </script>
       <template>
         <div @click="$emit('update:a');"></div>
-      </tempalte>
+      </template>
+      `)
+    })
+
+    // #12841
+    test('should not error when performing ts expression check for v-slot destructured default value', () => {
+      compile(`
+      <script setup lang="ts">
+        import FooComp from './Foo.vue'
+      </script>
+      <template>
+        <FooComp>
+          <template #bar="{ bar = { baz: '' } }">
+            {{ bar.baz }}
+          </template>
+        </FooComp>
+      </template>
       `)
     })
   })

packages/compiler-sfc/test/prefixIdentifiers.spec.ts

@@ -31,21 +31,21 @@ it('should work', () => {
       var _vm = this,
         _c = _vm._self._c
       return _c(
-        \\"div\\",
-        { attrs: { id: \\"app\\" } },
+        "div",
+        { attrs: { id: "app" } },
         [
-          _c(\\"div\\", { style: { color: _vm.color } }, [_vm._v(_vm._s(_vm.foo))]),
-          _vm._v(\\" \\"),
+          _c("div", { style: { color: _vm.color } }, [_vm._v(_vm._s(_vm.foo))]),
+          _vm._v(" "),
           _vm._l(_vm.list, function (i) {
-            return _c(\\"p\\", [_vm._v(_vm._s(i))])
+            return _c("p", [_vm._v(_vm._s(i))])
           }),
-          _vm._v(\\" \\"),
-          _c(\\"foo\\", {
+          _vm._v(" "),
+          _c("foo", {
             inlineTemplate: {
               render: function () {
                 var _vm = this,
                   _c = _vm._self._c
-                return _c(\\"div\\", [_vm._v(_vm._s(_vm.bar))])
+                return _c("div", [_vm._v(_vm._s(_vm.bar))])
               },
               staticRenderFns: [],
             },
@@ -81,10 +81,10 @@ it('setup bindings', () => {
         _c = _vm._self._c,
         _setup = _vm._self._setupProxy
       return _c(
-        \\"div\\",
+        "div",
         {
           on: {
-            click: function (\$event) {
+            click: function ($event) {
               _setup.count++
             },
           },

packages/compiler-sfc/test/rewriteDefault.spec.ts

@@ -190,7 +190,7 @@ describe('compiler sfc: rewriteDefault', () => {
     ).toMatchInlineSnapshot(`
       "/*
       export default class Foo {}*/
-      class Bar {}
+       class Bar {}
       const script = Bar"
     `)
   })
@@ -206,7 +206,10 @@ describe('compiler sfc: rewriteDefault', () => {
 
   test('@Component\nexport default class w/ comments', async () => {
     expect(
-      rewriteDefault(`// export default\n@Component\nexport default class Foo {}`, 'script')
+      rewriteDefault(
+        `// export default\n@Component\nexport default class Foo {}`,
+        'script'
+      )
     ).toMatchInlineSnapshot(`
       "// export default
       @Component
@@ -231,15 +234,78 @@ describe('compiler sfc: rewriteDefault', () => {
   test('@Component\nexport default class w/ comments 3', async () => {
     expect(
       rewriteDefault(
-        `/*\n@Component\nexport default class Foo {}*/\n` + `export default class Bar {}`,
+        `/*\n@Component\nexport default class Foo {}*/\n` +
+          `export default class Bar {}`,
         'script'
       )
     ).toMatchInlineSnapshot(`
       "/*
       @Component
       export default class Foo {}*/
-      class Bar {}
+       class Bar {}
       const script = Bar"
     `)
   })
+
+  // #13060
+  test('@Component\nexport default class w/ comments 4', async () => {
+    expect(
+      rewriteDefault(
+        `@Component
+        export default class App extends Vue {
+          /* default <- This word means my component is not built correctly */
+          @Prop({ type: String, required: true })
+          protected someString: string;
+        }`,
+        'script'
+      )
+    ).toMatchInlineSnapshot(`
+      "@Component
+              class App extends Vue {
+                /* default <- This word means my component is not built correctly */
+                @Prop({ type: String, required: true })
+                protected someString: string;
+              }
+      const script = App"
+    `)
+  })
+
+  // #12892
+  test('@Component\nexport default class w/ comments 5', async () => {
+    expect(
+      rewriteDefault(
+        `@Component({})
+        export default class HelloWorld extends Vue {
+          test = "";
+          mounted() {
+            console.log("mounted!");
+            this.test = "Hallo Welt!";
+          }
+          exportieren(): void {
+            // do nothing
+          }
+          defaultWert(): void {
+            // do nothing
+          }
+        }`,
+        'script',
+        ['typescript', 'decorators-legacy']
+      )
+    ).toMatchInlineSnapshot(`
+      "@Component({}) class HelloWorld extends Vue {
+                test = "";
+                mounted() {
+                  console.log("mounted!");
+                  this.test = "Hallo Welt!";
+                }
+                exportieren(): void {
+                  // do nothing
+                }
+                defaultWert(): void {
+                  // do nothing
+                }
+              }
+      const script = HelloWorld"
+    `)
+  })
 })

packages/server-renderer/package.json

@@ -1,6 +1,6 @@
 {
   "name": "vue-server-renderer",
-  "version": "2.7.10",
+  "version": "2.7.16",
   "description": "server renderer for Vue 2.0",
   "main": "index.js",
   "types": "types/index.d.ts",
@@ -38,7 +38,7 @@
     "file-loader": "^3.0.1",
     "memory-fs": "^0.5.0",
     "vue": "file:../..",
-    "webpack": "^4.46.0"
+    "webpack": "^4.47.0"
   },
   "homepage": "https://github.com/vuejs/vue/tree/dev/packages/vue-server-renderer#readme"
 }

packages/server-renderer/src/render-context.ts

@@ -34,8 +34,6 @@ export class RenderContext {
   renderStates: Array<RenderState>
   write: (text: string, next: Function) => void
   renderNode: (node: VNode, isRoot: boolean, context: RenderContext) => void
-  //@ts-expect-error
-  next: () => void
   done: (err?: Error) => void
 
   modules: Array<(node: VNode) => string | null>
@@ -67,11 +65,9 @@ export class RenderContext {
     this.get = cache && normalizeAsync(cache, 'get')
     this.has = cache && normalizeAsync(cache, 'has')
 
-    //@ts-expect-error
     this.next = this.next.bind(this)
   }
 
-  //@ts-expect-error
   next() {
     // eslint-disable-next-line
     while (true) {

packages/server-renderer/test/ssr-basic-renderer.spec.ts

@@ -2,9 +2,10 @@
 
 import Vue from 'vue'
 import renderToString from 'server/index-basic'
+import { _it } from './utils'
 
 describe('SSR: basicRenderer', () => {
-  it('should work', done => {
+  _it('should work', done => {
     renderToString(
       new Vue({
         template: `
@@ -61,7 +62,7 @@ describe('SSR: basicRenderer', () => {
   })
 
   // #5941
-  it('should work properly when accessing $ssrContext in root component', done => {
+  _it('should work properly when accessing $ssrContext in root component', done => {
     let ssrContext
     renderToString(
       new Vue({

packages/server-renderer/test/ssr-bundle-render.spec.ts

@@ -4,7 +4,7 @@ import { createWebpackBundleRenderer } from './compile-with-webpack'
 
 describe('SSR: bundle renderer', () => {
   createAssertions(true)
-  createAssertions(false)
+  // createAssertions(false)
 })
 
 function createAssertions(runInNewContext) {

packages/server-renderer/test/ssr-stream.spec.ts

@@ -2,10 +2,12 @@
 
 import Vue from 'vue'
 import { createRenderer } from 'server/index'
+import { _it } from './utils'
+
 const { renderToStream } = createRenderer()
 
 describe('SSR: renderToStream', () => {
-  it('should render to a stream', done => {
+  _it('should render to a stream', done => {
     const stream = renderToStream(
       new Vue({
         template: `
@@ -74,7 +76,7 @@ describe('SSR: renderToStream', () => {
     })
   })
 
-  it('should catch error', done => {
+  _it('should catch error', done => {
     const stream = renderToStream(
       new Vue({
         render() {
@@ -90,7 +92,7 @@ describe('SSR: renderToStream', () => {
     stream.on('data', _ => _)
   })
 
-  it('should not mingle two components', done => {
+  _it('should not mingle two components', done => {
     const padding = new Array(20000).join('x')
     const component1 = new Vue({
       template: `<div>${padding}<div></div></div>`,
@@ -114,7 +116,7 @@ describe('SSR: renderToStream', () => {
     stream2.read(1)
   })
 
-  it('should call context.rendered', done => {
+  _it('should call context.rendered', done => {
     let a = 0
     const stream = renderToStream(
       new Vue({

packages/server-renderer/test/ssr-string.spec.ts

@@ -3,10 +3,12 @@
 import Vue from 'vue'
 import VM from 'vm'
 import { createRenderer } from 'server/index'
+import { _it } from './utils'
+
 const { renderToString } = createRenderer()
 
 describe('SSR: renderToString', () => {
-  it('static attributes', done => {
+  _it('static attributes', done => {
     renderVmWithOptions(
       {
         template: '<div id="foo" bar="123"></div>'
@@ -20,7 +22,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('unary tags', done => {
+  _it('unary tags', done => {
     renderVmWithOptions(
       {
         template: '<input value="123">'
@@ -34,7 +36,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('dynamic attributes', done => {
+  _it('dynamic attributes', done => {
     renderVmWithOptions(
       {
         template: '<div qux="quux" :id="foo" :bar="baz"></div>',
@@ -52,7 +54,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('static class', done => {
+  _it('static class', done => {
     renderVmWithOptions(
       {
         template: '<div class="foo bar"></div>'
@@ -66,7 +68,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('dynamic class', done => {
+  _it('dynamic class', done => {
     renderVmWithOptions(
       {
         template:
@@ -86,7 +88,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('custom component class', done => {
+  _it('custom component class', done => {
     renderVmWithOptions(
       {
         template: '<div><cmp class="cmp"></cmp></div>',
@@ -105,7 +107,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('nested component class', done => {
+  _it('nested component class', done => {
     renderVmWithOptions(
       {
         template: '<cmp class="outer" :class="cls"></cmp>',
@@ -135,7 +137,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('dynamic style', done => {
+  _it('dynamic style', done => {
     renderVmWithOptions(
       {
         template:
@@ -154,7 +156,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('dynamic string style', done => {
+  _it('dynamic string style', done => {
     renderVmWithOptions(
       {
         template: '<div :style="style"></div>',
@@ -171,7 +173,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('auto-prefixed style value as array', done => {
+  _it('auto-prefixed style value as array', done => {
     renderVmWithOptions(
       {
         template: '<div :style="style"></div>',
@@ -190,7 +192,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('custom component style', done => {
+  _it('custom component style', done => {
     renderVmWithOptions(
       {
         template: '<section><comp :style="style"></comp></section>',
@@ -212,7 +214,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('nested custom component style', done => {
+  _it('nested custom component style', done => {
     renderVmWithOptions(
       {
         template: '<comp style="color: blue" :style="style"></comp>',
@@ -240,7 +242,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('component style not passed to child', done => {
+  _it('component style not passed to child', done => {
     renderVmWithOptions(
       {
         template: '<comp :style="style"></comp>',
@@ -262,7 +264,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('component style not passed to slot', done => {
+  _it('component style not passed to slot', done => {
     renderVmWithOptions(
       {
         template:
@@ -285,7 +287,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('attrs merging on components', done => {
+  _it('attrs merging on components', done => {
     const Test = {
       render: h =>
         h('div', {
@@ -308,7 +310,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('domProps merging on components', done => {
+  _it('domProps merging on components', done => {
     const Test = {
       render: h =>
         h('div', {
@@ -331,7 +333,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('v-show directive render', done => {
+  _it('v-show directive render', done => {
     renderVmWithOptions(
       {
         template: '<div v-show="false"><span>inner</span></div>'
@@ -345,7 +347,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('v-show directive merge with style', done => {
+  _it('v-show directive merge with style', done => {
     renderVmWithOptions(
       {
         template:
@@ -360,7 +362,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('v-show directive not passed to child', done => {
+  _it('v-show directive not passed to child', done => {
     renderVmWithOptions(
       {
         template: '<foo v-show="false"></foo>',
@@ -379,7 +381,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('v-show directive not passed to slot', done => {
+  _it('v-show directive not passed to slot', done => {
     renderVmWithOptions(
       {
         template: '<foo v-show="false"><span>inner</span></foo>',
@@ -398,7 +400,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('v-show directive merging on components', done => {
+  _it('v-show directive merging on components', done => {
     renderVmWithOptions(
       {
         template: '<foo v-show="false"></foo>',
@@ -430,7 +432,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('text interpolation', done => {
+  _it('text interpolation', done => {
     renderVmWithOptions(
       {
         template: '<div>{{ foo }} side {{ bar }}</div>',
@@ -448,7 +450,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('v-html on root', done => {
+  _it('v-html on root', done => {
     renderVmWithOptions(
       {
         template: '<div v-html="text"></div>',
@@ -465,7 +467,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('v-text on root', done => {
+  _it('v-text on root', done => {
     renderVmWithOptions(
       {
         template: '<div v-text="text"></div>',
@@ -482,7 +484,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('v-html', done => {
+  _it('v-html', done => {
     renderVmWithOptions(
       {
         template: '<div><div v-html="text"></div></div>',
@@ -499,7 +501,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('v-html with null value', done => {
+  _it('v-html with null value', done => {
     renderVmWithOptions(
       {
         template: '<div><div v-html="text"></div></div>',
@@ -516,7 +518,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('v-text', done => {
+  _it('v-text', done => {
     renderVmWithOptions(
       {
         template: '<div><div v-text="text"></div></div>',
@@ -533,7 +535,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('v-text with null value', done => {
+  _it('v-text with null value', done => {
     renderVmWithOptions(
       {
         template: '<div><div v-text="text"></div></div>',
@@ -550,7 +552,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('child component (hoc)', done => {
+  _it('child component (hoc)', done => {
     renderVmWithOptions(
       {
         template: '<child class="foo" :msg="msg"></child>',
@@ -579,7 +581,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('has correct lifecycle during render', done => {
+  _it('has correct lifecycle during render', done => {
     let lifecycleCount = 1
     renderVmWithOptions(
       {
@@ -622,7 +624,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('computed properties', done => {
+  _it('computed properties', done => {
     renderVmWithOptions(
       {
         template: '<div>{{ b }}</div>',
@@ -648,7 +650,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('renders async component', done => {
+  _it('renders async component', done => {
     renderVmWithOptions(
       {
         template: `
@@ -683,7 +685,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('renders async component (Promise, nested)', done => {
+  _it('renders async component (Promise, nested)', done => {
     const Foo = () =>
       Promise.resolve({
         render: h => h('div', [h('span', 'foo'), h(Bar)])
@@ -706,7 +708,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('renders async component (ES module)', done => {
+  _it('renders async component (ES module)', done => {
     const Foo = () =>
       Promise.resolve({
         __esModule: true,
@@ -735,7 +737,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('renders async component (hoc)', done => {
+  _it('renders async component (hoc)', done => {
     renderVmWithOptions(
       {
         template: '<test-async></test-async>',
@@ -761,7 +763,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('renders async component (functional, single node)', done => {
+  _it('renders async component (functional, single node)', done => {
     renderVmWithOptions(
       {
         template: `
@@ -793,7 +795,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('renders async component (functional, multiple nodes)', done => {
+  _it('renders async component (functional, multiple nodes)', done => {
     renderVmWithOptions(
       {
         template: `
@@ -831,7 +833,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('renders nested async functional component', done => {
+  _it('renders nested async functional component', done => {
     renderVmWithOptions(
       {
         template: `
@@ -877,7 +879,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('should catch async component error', done => {
+  _it('should catch async component error', done => {
     renderToString(
       new Vue({
         template: '<test-async></test-async>',
@@ -900,7 +902,7 @@ describe('SSR: renderToString', () => {
   })
 
   // #11963, #10391
-  it('renders async children passed in slots', done => {
+  _it('renders async children passed in slots', done => {
     const Parent = {
       template: `<div><slot name="child"/></div>`
     }
@@ -930,7 +932,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('everything together', done => {
+  _it('everything together', done => {
     renderVmWithOptions(
       {
         template: `
@@ -985,7 +987,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('normal attr', done => {
+  _it('normal attr', done => {
     renderVmWithOptions(
       {
         template: `
@@ -1013,7 +1015,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('enumerated attr', done => {
+  _it('enumerated attr', done => {
     renderVmWithOptions(
       {
         template: `
@@ -1043,7 +1045,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('boolean attr', done => {
+  _it('boolean attr', done => {
     renderVmWithOptions(
       {
         template: `
@@ -1069,7 +1071,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('v-bind object', done => {
+  _it('v-bind object', done => {
     renderVmWithOptions(
       {
         data: {
@@ -1086,7 +1088,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('custom directives on raw element', done => {
+  _it('custom directives on raw element', done => {
     const renderer = createRenderer({
       directives: {
         'class-prefixer': (node, dir) => {
@@ -1129,7 +1131,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('custom directives on component', done => {
+  _it('custom directives on component', done => {
     const Test = {
       template: '<span>hello world</span>'
     }
@@ -1161,7 +1163,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('custom directives on element root of a component', done => {
+  _it('custom directives on element root of a component', done => {
     const Test = {
       template:
         '<span v-class-prefixer="\'my\'" class="class1" :class="\'class2\'">hello world</span>'
@@ -1193,7 +1195,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('custom directives on element with parent element', done => {
+  _it('custom directives on element with parent element', done => {
     const renderer = createRenderer({
       directives: {
         'class-prefixer': (node, dir) => {
@@ -1221,26 +1223,29 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('should not warn for custom directives that do not have server-side implementation', done => {
-    renderToString(
-      new Vue({
-        directives: {
-          test: {
-            bind() {
-              // noop
+  _it(
+    'should not warn for custom directives that do not have server-side implementation',
+    done => {
+      renderToString(
+        new Vue({
+          directives: {
+            test: {
+              bind() {
+                // noop
+              }
             }
-          }
-        },
-        template: '<div v-test></div>'
-      }),
-      () => {
-        expect('Failed to resolve directive: test').not.toHaveBeenWarned()
-        done()
-      }
-    )
-  })
+          },
+          template: '<div v-test></div>'
+        }),
+        () => {
+          expect('Failed to resolve directive: test').not.toHaveBeenWarned()
+          done()
+        }
+      )
+    }
+  )
 
-  it('_scopeId', done => {
+  _it('_scopeId', done => {
     renderVmWithOptions(
       {
         _scopeId: '_v-parent',
@@ -1268,7 +1273,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('_scopeId on slot content', done => {
+  _it('_scopeId on slot content', done => {
     renderVmWithOptions(
       {
         _scopeId: '_v-parent',
@@ -1294,7 +1299,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('comment nodes', done => {
+  _it('comment nodes', done => {
     renderVmWithOptions(
       {
         template: '<div><transition><div v-if="false"></div></transition></div>'
@@ -1308,7 +1313,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('should catch error', done => {
+  _it('should catch error', done => {
     renderToString(
       new Vue({
         render() {
@@ -1323,7 +1328,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('default value Foreign Function', () => {
+  _it('default value Foreign Function', () => {
     const FunctionConstructor = VM.runInNewContext('Function')
     const func = () => 123
     const vm = new Vue({
@@ -1340,7 +1345,7 @@ describe('SSR: renderToString', () => {
     expect(vm.a).toBe(func)
   })
 
-  it('should prevent xss in attributes', done => {
+  _it('should prevent xss in attributes', done => {
     renderVmWithOptions(
       {
         data: {
@@ -1359,7 +1364,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('should prevent xss in attribute names', done => {
+  _it('should prevent xss in attribute names', done => {
     renderVmWithOptions(
       {
         data: {
@@ -1378,7 +1383,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('should prevent xss in attribute names (optimized)', done => {
+  _it('should prevent xss in attribute names (optimized)', done => {
     renderVmWithOptions(
       {
         data: {
@@ -1399,22 +1404,25 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('should prevent script xss with v-bind object syntax + array value', done => {
-    renderVmWithOptions(
-      {
-        data: {
-          test: ['"><script>alert(1)</script><!--"']
+  _it(
+    'should prevent script xss with v-bind object syntax + array value',
+    done => {
+      renderVmWithOptions(
+        {
+          data: {
+            test: ['"><script>alert(1)</script><!--"']
+          },
+          template: `<div v-bind="{ test }"></div>`
         },
-        template: `<div v-bind="{ test }"></div>`
-      },
-      res => {
-        expect(res).not.toContain(`<script>alert(1)</script>`)
-        done()
-      }
-    )
-  })
+        res => {
+          expect(res).not.toContain(`<script>alert(1)</script>`)
+          done()
+        }
+      )
+    }
+  )
 
-  it('v-if', done => {
+  _it('v-if', done => {
     renderVmWithOptions(
       {
         template: `
@@ -1433,7 +1441,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('v-for', done => {
+  _it('v-for', done => {
     renderVmWithOptions(
       {
         template: `
@@ -1452,7 +1460,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('template v-if', done => {
+  _it('template v-if', done => {
     renderVmWithOptions(
       {
         template: `
@@ -1473,7 +1481,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('template v-for', done => {
+  _it('template v-for', done => {
     renderVmWithOptions(
       {
         template: `
@@ -1494,7 +1502,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('with inheritAttrs: false + $attrs', done => {
+  _it('with inheritAttrs: false + $attrs', done => {
     renderVmWithOptions(
       {
         template: `<foo id="a"/>`,
@@ -1514,7 +1522,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('should escape static strings', done => {
+  _it('should escape static strings', done => {
     renderVmWithOptions(
       {
         template: `<div>&lt;foo&gt;</div>`
@@ -1526,7 +1534,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('should not cache computed properties', done => {
+  _it('should not cache computed properties', done => {
     renderVmWithOptions(
       {
         template: `<div>{{ foo }}</div>`,
@@ -1549,7 +1557,7 @@ describe('SSR: renderToString', () => {
   })
 
   // #8977
-  it('should call computed properties with vm as first argument', done => {
+  _it('should call computed properties with vm as first argument', done => {
     renderToString(
       new Vue({
         data: {
@@ -1571,7 +1579,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('return Promise', async () => {
+  _it('return Promise', async () => {
     await renderToString(
       new Vue({
         template: `<div>{{ foo }}</div>`,
@@ -1582,7 +1590,7 @@ describe('SSR: renderToString', () => {
     })
   })
 
-  it('return Promise (error)', async () => {
+  _it('return Promise (error)', async () => {
     await renderToString(
       new Vue({
         render() {
@@ -1595,7 +1603,7 @@ describe('SSR: renderToString', () => {
     })
   })
 
-  it('should catch template compilation error', done => {
+  _it('should catch template compilation error', done => {
     renderToString(
       new Vue({
         template: `<div></div><div></div>`
@@ -1610,7 +1618,7 @@ describe('SSR: renderToString', () => {
   })
 
   // #6907
-  it('should not optimize root if conditions', done => {
+  _it('should not optimize root if conditions', done => {
     renderVmWithOptions(
       {
         data: { foo: 123 },
@@ -1625,7 +1633,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('render muted properly', done => {
+  _it('render muted properly', done => {
     renderVmWithOptions(
       {
         template: '<video muted></video>'
@@ -1639,7 +1647,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('render v-model with textarea', done => {
+  _it('render v-model with textarea', done => {
     renderVmWithOptions(
       {
         data: { foo: 'bar' },
@@ -1652,7 +1660,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('render v-model with textarea (non-optimized)', done => {
+  _it('render v-model with textarea (non-optimized)', done => {
     renderVmWithOptions(
       {
         render(h) {
@@ -1672,7 +1680,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('render v-model with <select> (value binding)', done => {
+  _it('render v-model with <select> (value binding)', done => {
     renderVmWithOptions(
       {
         data: {
@@ -1702,7 +1710,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('render v-model with <select> (static value)', done => {
+  _it('render v-model with <select> (static value)', done => {
     renderVmWithOptions(
       {
         data: {
@@ -1729,7 +1737,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('render v-model with <select> (text as value)', done => {
+  _it('render v-model with <select> (text as value)', done => {
     renderVmWithOptions(
       {
         data: {
@@ -1760,7 +1768,7 @@ describe('SSR: renderToString', () => {
   })
 
   // #7223
-  it('should not double escape attribute values', done => {
+  _it('should not double escape attribute values', done => {
     renderVmWithOptions(
       {
         template: `
@@ -1777,7 +1785,7 @@ describe('SSR: renderToString', () => {
   })
 
   // #7859
-  it('should not double escape class values', done => {
+  _it('should not double escape class values', done => {
     renderVmWithOptions(
       {
         template: `
@@ -1793,7 +1801,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('should expose ssr helpers on functional context', done => {
+  _it('should expose ssr helpers on functional context', done => {
     let called = false
     renderVmWithOptions(
       {
@@ -1815,7 +1823,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('should support serverPrefetch option', done => {
+  _it('should support serverPrefetch option', done => {
     renderVmWithOptions(
       {
         template: `
@@ -1840,7 +1848,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('should support serverPrefetch option (nested)', done => {
+  _it('should support serverPrefetch option (nested)', done => {
     renderVmWithOptions(
       {
         template: `
@@ -1890,7 +1898,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('should support serverPrefetch option (nested async)', done => {
+  _it('should support serverPrefetch option (nested async)', done => {
     renderVmWithOptions(
       {
         template: `
@@ -1942,7 +1950,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('should merge serverPrefetch option', done => {
+  _it('should merge serverPrefetch option', done => {
     const mixin = {
       data: {
         message: ''
@@ -1986,29 +1994,32 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it(`should skip serverPrefetch option that doesn't return a promise`, done => {
-    renderVmWithOptions(
-      {
-        template: `
+  _it(
+    `should skip serverPrefetch option that doesn't return a promise`,
+    done => {
+      renderVmWithOptions(
+        {
+          template: `
         <div>{{ count }}</div>
       `,
-        data: {
-          count: 0
+          data: {
+            count: 0
+          },
+          serverPrefetch() {
+            setTimeout(() => {
+              this.count = 42
+            }, 1)
+          }
         },
-        serverPrefetch() {
-          setTimeout(() => {
-            this.count = 42
-          }, 1)
+        result => {
+          expect(result).toContain('<div data-server-rendered="true">0</div>')
+          done()
         }
-      },
-      result => {
-        expect(result).toContain('<div data-server-rendered="true">0</div>')
-        done()
-      }
-    )
-  })
+      )
+    }
+  )
 
-  it('should call context.rendered', done => {
+  _it('should call context.rendered', done => {
     let a = 0
     renderToString(
       new Vue({
@@ -2028,7 +2039,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('invalid style value', done => {
+  _it('invalid style value', done => {
     renderVmWithOptions(
       {
         template: '<div :style="style"><p :style="style2"/></div>',
@@ -2054,7 +2065,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('numeric style value', done => {
+  _it('numeric style value', done => {
     renderVmWithOptions(
       {
         template: '<div :style="style"></div>',
@@ -2076,7 +2087,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('handling max stack size limit', done => {
+  _it('handling max stack size limit', done => {
     const vueInstance = new Vue({
       template: `<div class="root">
         <child v-for="(x, i) in items" :key="i"></child>
@@ -2094,7 +2105,7 @@ describe('SSR: renderToString', () => {
     renderToString(vueInstance, err => done(err))
   })
 
-  it('undefined v-model with textarea', done => {
+  _it('undefined v-model with textarea', done => {
     renderVmWithOptions(
       {
         render(h) {
@@ -2116,7 +2127,7 @@ describe('SSR: renderToString', () => {
     )
   })
 
-  it('Options inheritAttrs in parent component', done => {
+  _it('Options inheritAttrs in parent component', done => {
     const childComponent = {
       template: `<div>{{ someProp }}</div>`,
       props: {

packages/server-renderer/test/utils.ts

@@ -0,0 +1,22 @@
+/**
+ * Async callback style it for compatibility with old tests.
+ */
+export function _it(
+  desc: string,
+  runner: (done: (err?: Error) => void) => void | Promise<any>
+) {
+  it(desc, async () => {
+    if (runner.length === 0) {
+      return runner(() => {})
+    }
+    await new Promise<void>((resolve, reject) => {
+      const res = runner(err => {
+        if (err) reject(err)
+        else resolve()
+      })
+      if (res instanceof Promise) {
+        resolve(res)
+      }
+    })
+  })
+}

packages/template-compiler/README.md

@@ -130,7 +130,7 @@ This is only useful at runtime with pre-configured builds, so it doesn't accept
 
 Same as `compiler.compile` but generates SSR-specific render function code by optimizing parts of the template into string concatenation in order to improve SSR performance.
 
-This is used by default in `vue-loader@>=12` and can be disabled using the [`optimizeSSR`](https://vue-loader.vuejs.org/en/options.html#optimizessr) option.
+This is used by default in `vue-loader@>=12` and can be disabled using the [`optimizeSSR`](https://vue-loader.vuejs.org/options.html#optimizessr) option.
 
 ---
 

packages/template-compiler/package.json

@@ -1,6 +1,6 @@
 {
   "name": "vue-template-compiler",
-  "version": "2.7.10",
+  "version": "2.7.16",
   "description": "template compiler for Vue 2.0",
   "main": "index.js",
   "unpkg": "browser.js",

scripts/config.js

@@ -227,6 +227,9 @@ const builds = {
 
 function genConfig(name) {
   const opts = builds[name]
+  const isTargetingBrowser = !(
+    opts.transpile === false || opts.format === 'cjs'
+  )
 
   // console.log('__dir', __dirname)
   const config = {
@@ -243,11 +246,9 @@ function genConfig(name) {
           compilerOptions: {
             // if targeting browser, target es5
             // if targeting node, es2017 means Node 8
-            target:
-              opts.transpile === false || opts.format === 'cjs'
-                ? 'es2017'
-                : 'es5'
+            target: isTargetingBrowser ? 'es5' : 'es2017'
           },
+          include: isTargetingBrowser ? ['src'] : ['src', 'packages/*/src'],
           exclude: ['test', 'test-dts']
         }
       })

src/compiler/codegen/index.ts

@@ -259,7 +259,7 @@ export function genFor(
     state.warn(
       `<${el.tag} v-for="${alias} in ${exp}">: component lists rendered with ` +
         `v-for should have explicit keys. ` +
-        `See https://vuejs.org/guide/list.html#key for more info.`,
+        `See https://v2.vuejs.org/v2/guide/list.html#key for more info.`,
       el.rawAttrsMap['v-for'],
       true /* tip */
     )

src/compiler/parser/html-parser.ts

@@ -98,7 +98,7 @@ export function parseHTML(html, options: HTMLParserOptions) {
           }
         }
 
-        // http://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment
+        // https://en.wikipedia.org/wiki/Conditional_comment#Downlevel-revealed_conditional_comment
         if (conditionalComment.test(html)) {
           const conditionalEnd = html.indexOf(']>')
 

src/compiler/parser/index.ts

@@ -42,7 +42,7 @@ export const bindRE = /^:|^\.|^v-bind:/
 const propBindRE = /^\./
 const modifierRE = /\.[^.\]]+(?=[^\]]*$)/g
 
-const slotRE = /^v-slot(:|$)|^#/
+export const slotRE = /^v-slot(:|$)|^#/
 
 const lineBreakRE = /[\r\n]/
 const whitespaceRE = /[ \f\t\r\n]+/g

src/core/components/keep-alive.ts

@@ -33,10 +33,15 @@ function matches(
 }
 
 function pruneCache(
-  keepAliveInstance: { cache: CacheEntryMap; keys: string[]; _vnode: VNode },
+  keepAliveInstance: {
+    cache: CacheEntryMap
+    keys: string[]
+    _vnode: VNode
+    $vnode: VNode
+  },
   filter: Function
 ) {
-  const { cache, keys, _vnode } = keepAliveInstance
+  const { cache, keys, _vnode, $vnode } = keepAliveInstance
   for (const key in cache) {
     const entry = cache[key]
     if (entry) {
@@ -46,6 +51,7 @@ function pruneCache(
       }
     }
   }
+  $vnode.componentOptions!.children = undefined
 }
 
 function pruneCacheEntry(

src/core/instance/init.ts

@@ -34,6 +34,9 @@ export function initMixin(Vue: typeof Component) {
     vm.__v_skip = true
     // effect scope
     vm._scope = new EffectScope(true /* detached */)
+    // #13134 edge case where a child component is manually created during the
+    // render of a parent component
+    vm._scope.parent = undefined
     vm._scope._vm = true
     // merge options
     if (options && options._isComponent) {

src/core/instance/lifecycle.ts

@@ -18,6 +18,7 @@ import {
   invokeWithErrorHandling
 } from '../util/index'
 import { currentInstance, setCurrentInstance } from 'v3/currentInstance'
+import { getCurrentScope } from 'v3/reactivity/effectScope'
 import { syncSetupProxy } from 'v3/apiSetup'
 
 export let activeInstance: any = null
@@ -398,7 +399,8 @@ export function callHook(
 ) {
   // #7573 disable dep collection when invoking lifecycle hooks
   pushTarget()
-  const prev = currentInstance
+  const prevInst = currentInstance
+  const prevScope = getCurrentScope()
   setContext && setCurrentInstance(vm)
   const handlers = vm.$options[hook]
   const info = `${hook} hook`
@@ -410,6 +412,10 @@ export function callHook(
   if (vm._hasHookEvent) {
     vm.$emit('hook:' + hook)
   }
-  setContext && setCurrentInstance(prev)
+  if (setContext) {
+    setCurrentInstance(prevInst)
+    prevScope && prevScope.on()
+  }
+
   popTarget()
 }

src/core/instance/render.ts

@@ -15,7 +15,7 @@ import VNode, { createEmptyVNode } from '../vdom/vnode'
 
 import { isUpdatingChildComponent } from './lifecycle'
 import type { Component } from 'types/component'
-import { setCurrentInstance } from 'v3/currentInstance'
+import { currentInstance, setCurrentInstance } from 'v3/currentInstance'
 import { syncSetupSlots } from 'v3/apiSetup'
 
 export function initRender(vm: Component) {
@@ -120,11 +120,10 @@ export function renderMixin(Vue: typeof Component) {
     // to the data on the placeholder node.
     vm.$vnode = _parentVnode!
     // render self
+    const prevInst = currentInstance
+    const prevRenderInst = currentRenderingInstance
     let vnode
     try {
-      // There's no need to maintain a stack because all render fns are called
-      // separately from one another. Nested component's render fns are called
-      // when parent component is patched.
       setCurrentInstance(vm)
       currentRenderingInstance = vm
       vnode = render.call(vm._renderProxy, vm.$createElement)
@@ -148,8 +147,8 @@ export function renderMixin(Vue: typeof Component) {
         vnode = vm._vnode
       }
     } finally {
-      currentRenderingInstance = null
-      setCurrentInstance()
+      currentRenderingInstance = prevRenderInst
+      setCurrentInstance(prevInst)
     }
     // if the returned array contains only a single node, allow it
     if (isArray(vnode) && vnode.length === 1) {

src/core/instance/state.ts

@@ -95,19 +95,25 @@ function initProps(vm: Component, propsOptions: Object) {
           vm
         )
       }
-      defineReactive(props, key, value, () => {
-        if (!isRoot && !isUpdatingChildComponent) {
-          warn(
-            `Avoid mutating a prop directly since the value will be ` +
-              `overwritten whenever the parent component re-renders. ` +
-              `Instead, use a data or computed property based on the prop's ` +
-              `value. Prop being mutated: "${key}"`,
-            vm
-          )
-        }
-      })
+      defineReactive(
+        props,
+        key,
+        value,
+        () => {
+          if (!isRoot && !isUpdatingChildComponent) {
+            warn(
+              `Avoid mutating a prop directly since the value will be ` +
+                `overwritten whenever the parent component re-renders. ` +
+                `Instead, use a data or computed property based on the prop's ` +
+                `value. Prop being mutated: "${key}"`,
+              vm
+            )
+          }
+        },
+        true /* shallow */
+      )
     } else {
-      defineReactive(props, key, value)
+      defineReactive(props, key, value, undefined, true /* shallow */)
     }
     // static props are already proxied on the component's prototype
     // during Vue.extend(). We only need to proxy props defined at

src/core/observer/dep.ts

@@ -1,9 +1,19 @@
-import { remove } from '../util/index'
 import config from '../config'
 import { DebuggerOptions, DebuggerEventExtraInfo } from 'v3'
 
 let uid = 0
 
+const pendingCleanupDeps: Dep[] = []
+
+export const cleanupDeps = () => {
+  for (let i = 0; i < pendingCleanupDeps.length; i++) {
+    const dep = pendingCleanupDeps[i]
+    dep.subs = dep.subs.filter(s => s)
+    dep._pending = false
+  }
+  pendingCleanupDeps.length = 0
+}
+
 /**
  * @internal
  */
@@ -21,7 +31,9 @@ export interface DepTarget extends DebuggerOptions {
 export default class Dep {
   static target?: DepTarget | null
   id: number
-  subs: Array<DepTarget>
+  subs: Array<DepTarget | null>
+  // pending subs cleanup
+  _pending = false
 
   constructor() {
     this.id = uid++
@@ -33,7 +45,15 @@ export default class Dep {
   }
 
   removeSub(sub: DepTarget) {
-    remove(this.subs, sub)
+    // #12696 deps with massive amount of subscribers are extremely slow to
+    // clean up in Chromium
+    // to workaround this, we unset the sub for now, and clear them on
+    // next scheduler flush.
+    this.subs[this.subs.indexOf(sub)] = null
+    if (!this._pending) {
+      this._pending = true
+      pendingCleanupDeps.push(this)
+    }
   }
 
   depend(info?: DebuggerEventExtraInfo) {
@@ -50,7 +70,7 @@ export default class Dep {
 
   notify(info?: DebuggerEventExtraInfo) {
     // stabilize the subscriber list first
-    const subs = this.subs.slice()
+    const subs = this.subs.filter(s => s) as DepTarget[]
     if (__DEV__ && !config.async) {
       // subs aren't sorted in scheduler if not running async
       // we need to sort them now to make sure they fire in correct
@@ -58,15 +78,15 @@ export default class Dep {
       subs.sort((a, b) => a.id - b.id)
     }
     for (let i = 0, l = subs.length; i < l; i++) {
+      const sub = subs[i]
       if (__DEV__ && info) {
-        const sub = subs[i]
         sub.onTrigger &&
           sub.onTrigger({
             effect: subs[i],
             ...info
           })
       }
-      subs[i].update()
+      sub.update()
     }
   }
 }

src/core/observer/index.ts

@@ -7,7 +7,6 @@ import {
   hasOwn,
   isArray,
   hasProto,
-  isObject,
   isPlainObject,
   isPrimitive,
   isUndef,
@@ -20,7 +19,7 @@ import { isReadonly, isRef, TrackOpTypes, TriggerOpTypes } from '../../v3'
 
 const arrayKeys = Object.getOwnPropertyNames(arrayMethods)
 
-const NO_INIITIAL_VALUE = {}
+const NO_INITIAL_VALUE = {}
 
 /**
  * In some cases we may want to disable observation inside a component's
@@ -80,7 +79,7 @@ export class Observer {
       const keys = Object.keys(value)
       for (let i = 0; i < keys.length; i++) {
         const key = keys[i]
-        defineReactive(value, key, NO_INIITIAL_VALUE, undefined, shallow, mock)
+        defineReactive(value, key, NO_INITIAL_VALUE, undefined, shallow, mock)
       }
     }
   }
@@ -107,22 +106,20 @@ export function observe(
   shallow?: boolean,
   ssrMockReactivity?: boolean
 ): Observer | void {
-  if (!isObject(value) || isRef(value) || value instanceof VNode) {
-    return
+  if (value && hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {
+    return value.__ob__
   }
-  let ob: Observer | void
-  if (hasOwn(value, '__ob__') && value.__ob__ instanceof Observer) {
-    ob = value.__ob__
-  } else if (
+  if (
     shouldObserve &&
     (ssrMockReactivity || !isServerRendering()) &&
     (isArray(value) || isPlainObject(value)) &&
     Object.isExtensible(value) &&
-    !value.__v_skip /* ReactiveFlags.SKIP */
+    !value.__v_skip /* ReactiveFlags.SKIP */ &&
+    !isRef(value) &&
+    !(value instanceof VNode)
   ) {
-    ob = new Observer(value, shallow, ssrMockReactivity)
+    return new Observer(value, shallow, ssrMockReactivity)
   }
-  return ob
 }
 
 /**
@@ -134,7 +131,8 @@ export function defineReactive(
   val?: any,
   customSetter?: Function | null,
   shallow?: boolean,
-  mock?: boolean
+  mock?: boolean,
+  observeEvenIfShallow = false
 ) {
   const dep = new Dep()
 
@@ -148,12 +146,12 @@ export function defineReactive(
   const setter = property && property.set
   if (
     (!getter || setter) &&
-    (val === NO_INIITIAL_VALUE || arguments.length === 2)
+    (val === NO_INITIAL_VALUE || arguments.length === 2)
   ) {
     val = obj[key]
   }
 
-  let childOb = !shallow && observe(val, false, mock)
+  let childOb = shallow ? val && val.__ob__ : observe(val, false, mock)
   Object.defineProperty(obj, key, {
     enumerable: true,
     configurable: true,
@@ -197,7 +195,7 @@ export function defineReactive(
       } else {
         val = newVal
       }
-      childOb = !shallow && observe(newVal, false, mock)
+      childOb = shallow ? newVal && newVal.__ob__ : observe(newVal, false, mock)
       if (__DEV__) {
         dep.notify({
           type: TriggerOpTypes.SET,

src/core/observer/scheduler.ts

@@ -1,6 +1,6 @@
 import type Watcher from './watcher'
 import config from '../config'
-import Dep from './dep'
+import Dep, { cleanupDeps } from './dep'
 import { callHook, activateChildComponent } from '../instance/lifecycle'
 
 import { warn, nextTick, devtools, inBrowser, isIE } from '../util/index'
@@ -121,6 +121,7 @@ function flushSchedulerQueue() {
   // call component updated and activated hooks
   callActivatedHooks(activatedQueue)
   callUpdatedHooks(updatedQueue)
+  cleanupDeps()
 
   // devtool hook
   /* istanbul ignore if */

src/core/observer/traverse.ts

@@ -21,6 +21,7 @@ function _traverse(val: any, seen: SimpleSet) {
   const isA = isArray(val)
   if (
     (!isA && !isObject(val)) ||
+    val.__v_skip /* ReactiveFlags.SKIP */ ||
     Object.isFrozen(val) ||
     val instanceof VNode
   ) {

src/core/util/options.ts

@@ -51,7 +51,8 @@ if (__DEV__) {
  */
 function mergeData(
   to: Record<string | symbol, any>,
-  from: Record<string | symbol, any> | null
+  from: Record<string | symbol, any> | null,
+  recursive = true
 ): Record<PropertyKey, any> {
   if (!from) return to
   let key, toVal, fromVal
@@ -66,7 +67,7 @@ function mergeData(
     if (key === '__ob__') continue
     toVal = to[key]
     fromVal = from[key]
-    if (!hasOwn(to, key)) {
+    if (!recursive || !hasOwn(to, key)) {
       set(to, key, fromVal)
     } else if (
       toVal !== fromVal &&
@@ -262,7 +263,22 @@ strats.props =
       if (childVal) extend(ret, childVal)
       return ret
     }
-strats.provide = mergeDataOrFn
+
+strats.provide = function (parentVal: Object | null, childVal: Object | null) {
+  if (!parentVal) return childVal
+  return function () {
+    const ret = Object.create(null)
+    mergeData(ret, isFunction(parentVal) ? parentVal.call(this) : parentVal)
+    if (childVal) {
+      mergeData(
+        ret,
+        isFunction(childVal) ? childVal.call(this) : childVal,
+        false // non-recursive
+      )
+    }
+    return ret
+  }
+}
 
 /**
  * Default strategy.

src/core/vdom/patch.ts

@@ -878,8 +878,11 @@ export function createPatchFunction(backend) {
               const insert = ancestor.data.hook.insert
               if (insert.merged) {
                 // start at index 1 to avoid re-invoking component mounted hook
-                for (let i = 1; i < insert.fns.length; i++) {
-                  insert.fns[i]()
+                // clone insert hooks to avoid being mutated during iteration.
+                // e.g. for customed directives under transition group.
+                const cloned = insert.fns.slice(1)
+                for (let i = 0; i < cloned.length; i++) {
+                  cloned[i]()
                 }
               }
             } else {

src/platforms/web/runtime/modules/style.ts

@@ -91,10 +91,8 @@ function updateStyle(oldVnode: VNodeWithData, vnode: VNodeWithData) {
   }
   for (name in newStyle) {
     cur = newStyle[name]
-    if (cur !== oldStyle[name]) {
-      // ie9 setting to null has no effect, must use empty string
-      setProp(el, name, cur == null ? '' : cur)
-    }
+    // ie9 setting to null has no effect, must use empty string
+    setProp(el, name, cur == null ? '' : cur)
   }
 }
 

src/platforms/web/util/element.ts

@@ -62,7 +62,7 @@ export function isUnknownElement(tag: string): boolean {
   }
   const el = document.createElement(tag)
   if (tag.indexOf('-') > -1) {
-    // http://stackoverflow.com/a/28210364/1070244
+    // https://stackoverflow.com/a/28210364/1070244
     return (unknownElementCache[tag] =
       el.constructor === window.HTMLUnknownElement ||
       el.constructor === window.HTMLElement)

src/shared/util.ts

@@ -90,10 +90,18 @@ export function toString(val: any): string {
   return val == null
     ? ''
     : Array.isArray(val) || (isPlainObject(val) && val.toString === _toString)
-    ? JSON.stringify(val, null, 2)
+    ? JSON.stringify(val, replacer, 2)
     : String(val)
 }
 
+function replacer(_key: string, val: any): any {
+  // avoid circular deps from v3
+  if (val && val.__v_isRef) {
+    return val.value
+  }
+  return val
+}
+
 /**
  * Convert an input value to a number for persistence.
  * If the conversion fails, return original string.
@@ -133,7 +141,13 @@ export const isReservedAttribute = makeMap('key,ref,slot,slot-scope,is')
  * Remove an item from an array.
  */
 export function remove(arr: Array<any>, item: any): Array<any> | void {
-  if (arr.length) {
+  const len = arr.length
+  if (len) {
+    // fast path for the only / last item
+    if (item === arr[len - 1]) {
+      arr.length = len - 1
+      return
+    }
     const index = arr.indexOf(item)
     if (index > -1) {
       return arr.splice(index, 1)
@@ -280,9 +294,7 @@ export function genStaticKeys(
   modules: Array<{ staticKeys?: string[] } /* ModuleOptions */>
 ): string {
   return modules
-    .reduce((keys, m) => {
-      return keys.concat(m.staticKeys || [])
-    }, [] as string[])
+    .reduce<string[]>((keys, m) => keys.concat(m.staticKeys || []), [])
     .join(',')
 }
 

src/types/utils.ts

@@ -1,3 +1,3 @@
-// If the the type T accepts type "any", output type Y, otherwise output type N.
+// If the type T accepts type "any", output type Y, otherwise output type N.
 // https://stackoverflow.com/questions/49927523/disallow-call-with-any/49928360#49928360
 export type IfAny<T, Y, N> = 0 extends 1 & T ? Y : N

src/v3/apiAsyncComponent.ts

@@ -47,7 +47,7 @@ export function defineAsyncComponent(
 
   if (__DEV__ && suspensible) {
     warn(
-      `The suspensiblbe option for async components is not supported in Vue2. It is ignored.`
+      `The suspensible option for async components is not supported in Vue2. It is ignored.`
     )
   }
 

src/v3/apiWatch.ts

@@ -185,8 +185,11 @@ function doWatch(
   }
 
   const instance = currentInstance
-  const call = (fn: Function, type: string, args: any[] | null = null) =>
-    invokeWithErrorHandling(fn, null, args, instance, type)
+  const call = (fn: Function, type: string, args: any[] | null = null) => {
+    const res = invokeWithErrorHandling(fn, null, args, instance, type)
+    if (deep && res && res.__ob__) res.__ob__.dep.depend()
+    return res
+  }
 
   let getter: () => any
   let forceTrigger = false
@@ -209,6 +212,7 @@ function doWatch(
         if (isRef(s)) {
           return s.value
         } else if (isReactive(s)) {
+          s.__ob__.dep.depend()
           return traverse(s)
         } else if (isFunction(s)) {
           return call(s, WATCHER_GETTER)

src/v3/reactivity/effectScope.ts

@@ -16,9 +16,7 @@ export class EffectScope {
    * @internal
    */
   cleanups: (() => void)[] = []
-
   /**
-   * only assigned by undetached scope
    * @internal
    */
   parent: EffectScope | undefined
@@ -38,9 +36,9 @@ export class EffectScope {
    */
   private index: number | undefined
 
-  constructor(detached = false) {
+  constructor(public detached = false) {
+    this.parent = activeEffectScope
     if (!detached && activeEffectScope) {
-      this.parent = activeEffectScope
       this.index =
         (activeEffectScope.scopes || (activeEffectScope.scopes = [])).push(
           this
@@ -93,7 +91,7 @@ export class EffectScope {
         }
       }
       // nested scope, dereference from parent to avoid memory leaks
-      if (this.parent && !fromParent) {
+      if (!this.detached && this.parent && !fromParent) {
         // optimized O(1) removal
         const last = this.parent.scopes!.pop()
         if (last && last !== this) {
@@ -101,6 +99,7 @@ export class EffectScope {
           last.index = this.index!
         }
       }
+      this.parent = undefined
       this.active = false
     }
   }

src/v3/reactivity/reactive.ts

@@ -119,7 +119,10 @@ export function toRaw<T>(observed: T): T {
 export function markRaw<T extends object>(
   value: T
 ): T & { [RawSymbol]?: true } {
-  def(value, ReactiveFlags.SKIP, true)
+  // non-extensible objects won't be observed anyway
+  if (Object.isExtensible(value)) {
+    def(value, ReactiveFlags.SKIP, true)
+  }
   return value
 }
 

src/v3/reactivity/readonly.ts

@@ -57,6 +57,12 @@ function createReadonly(target: any, shallow: boolean) {
     return target as any
   }
 
+  if (__DEV__ && !Object.isExtensible(target)) {
+    warn(
+      `Vue 2 does not support creating readonly proxy for non-extensible object.`
+    )
+  }
+
   // already a readonly object
   if (isReadonly(target)) {
     return target as any

src/v3/reactivity/ref.ts

@@ -40,9 +40,7 @@ export function isRef(r: any): r is Ref {
   return !!(r && (r as Ref).__v_isRef === true)
 }
 
-export function ref<T extends object>(
-  value: T
-): [T] extends [Ref] ? T : Ref<UnwrapRef<T>>
+export function ref<T extends Ref>(value: T): T
 export function ref<T>(value: T): Ref<UnwrapRef<T>>
 export function ref<T = any>(): Ref<T | undefined>
 export function ref(value?: unknown) {
@@ -53,9 +51,8 @@ declare const ShallowRefMarker: unique symbol
 
 export type ShallowRef<T = any> = Ref<T> & { [ShallowRefMarker]?: true }
 
-export function shallowRef<T extends object>(
-  value: T
-): T extends Ref ? T : ShallowRef<T>
+export function shallowRef<T>(value: T | Ref<T>): Ref<T> | ShallowRef<T>
+export function shallowRef<T extends Ref>(value: T): T
 export function shallowRef<T>(value: T): ShallowRef<T>
 export function shallowRef<T = any>(): ShallowRef<T | undefined>
 export function shallowRef(value?: unknown) {

test/transition/karma.conf.js

@@ -2,12 +2,12 @@ const featureFlags = require('../../scripts/feature-flags')
 process.env.CHROME_BIN = require('puppeteer').executablePath()
 
 const define = {
-  __DEV__: true,
-  'process.env.CI': !!process.env.CI
+  __DEV__: `true`,
+  'process.env.CI': String(!!process.env.CI)
 }
 
 for (const key in featureFlags) {
-  define[`process.env.${key}`] = featureFlags[key]
+  define[`process.env.${key}`] = String(featureFlags[key])
 }
 
 module.exports = function (config) {

test/unit/features/global-api/config.spec.ts

@@ -116,7 +116,7 @@ describe('Global config', () => {
       expect(vm.computed).toBe('1,2,3')
       expect(vm.data).toBe('1,2,3')
 
-      vm.prop.push(4, 5)
+      vm.prop = [...vm.prop, 4, 5]
       expect(vm.computed).toBe('1,2,3,4,5')
       expect(vm.data).toBe('1,2,3,4,5')
       Vue.config.async = true

test/unit/features/options/inject.spec.ts

@@ -712,4 +712,12 @@ describe('Options provide/inject', () => {
     await nextTick()
     expect(spy).toHaveBeenCalledWith(2)
   })
+
+  // #12854
+  test('should not mutate original provide options', () => {
+    const hairMixin = { provide: { hair: 'red' } }
+    const eyesMixin = { provide: { eyes: 'brown' } }
+    new Vue({ mixins: [hairMixin, eyesMixin], render() {} }).$mount()
+    expect(eyesMixin.provide).toStrictEqual({ eyes: 'brown' })
+  })
 })

test/unit/features/options/props.spec.ts

@@ -1,6 +1,7 @@
 import Vue from 'vue'
 import { hasSymbol } from 'core/util/env'
 import testObjectOption from '../../../helpers/test-object-option'
+import { ref } from 'v3'
 
 describe('Options props', () => {
   testObjectOption('props')
@@ -593,4 +594,21 @@ describe('Options props', () => {
       'Invalid prop type: "String" is not a constructor'
     ).toHaveBeenWarned()
   })
+
+  // #12930
+  it('should not unwrap prop values that are raw refs', () => {
+    let val
+    const Comp = {
+      props: ['msg'],
+      created() {
+        val = this.msg
+      },
+      render() {}
+    }
+    const r = ref()
+    new Vue({
+      render: h => h(Comp, { props: { msg: r }})
+    }).$mount()
+    expect(val).toBe(r)
+  })
 })

test/unit/features/v3/apiWatch.spec.ts

@@ -1200,4 +1200,35 @@ describe('api: watch', () => {
     expect(parentSpy).toHaveBeenCalledTimes(1)
     expect(childSpy).toHaveBeenCalledTimes(1)
   })
+
+  // #12967
+  test('trigger when adding new property with Vue.set (getter)', async () => {
+    const spy = vi.fn()
+    const r = reactive({ exist: 5 })
+    watch(() => r, spy, { deep: true })
+    set(r, 'add', 1)
+
+    await nextTick()
+    expect(spy).toHaveBeenCalledTimes(1)
+  })
+
+  test('trigger when adding new property with Vue.set (getter in array source)', async () => {
+    const spy = vi.fn()
+    const r = reactive({ exist: 5 })
+    watch([() => r], spy, { deep: true })
+    set(r, 'add', 1)
+
+    await nextTick()
+    expect(spy).toHaveBeenCalledTimes(1)
+  })
+
+  test('trigger when adding new property with Vue.set (reactive in array source)', async () => {
+    const spy = vi.fn()
+    const r = reactive({ exist: 5 })
+    watch([r], spy, { deep: true })
+    set(r, 'add', 1)
+
+    await nextTick()
+    expect(spy).toHaveBeenCalledTimes(1)
+  })
 })

test/unit/features/v3/reactivity/effectScope.spec.ts

@@ -1,3 +1,4 @@
+import Vue from 'vue'
 import { nextTick } from 'core/util'
 import {
   watch,
@@ -279,4 +280,39 @@ describe('reactivity/effectScope', () => {
       expect(getCurrentScope()).toBe(currentScope)
     })
   })
+
+  it('calling .off() of a detached scope inside an active scope should not break currentScope', () => {
+    const parentScope = new EffectScope()
+
+    parentScope.run(() => {
+      const childScope = new EffectScope(true)
+      childScope.on()
+      childScope.off()
+      expect(getCurrentScope()).toBe(parentScope)
+    })
+  })
+
+  it('scope should not break currentScope when component call hooks', () => {
+    const scope = new EffectScope()
+    const vm = new Vue({
+      template: `
+          <div>
+            <div v-if="show" />
+          </div>
+        `,
+      data() {
+        return {
+          show: false
+        }
+      }
+    }).$mount()
+
+    scope.run(() => {
+      // call renderTriggered hook here
+      vm.show = true
+      // this effect should be collected by scope not the component scope
+      effect(() => {})
+    })
+    expect(scope.effects.length).toBe(1)
+  })
 })

test/unit/features/v3/reactivity/reactive.spec.ts

@@ -258,6 +258,12 @@ describe('reactivity/reactive', () => {
     expect(isReactive(obj.bar)).toBe(false)
   })
 
+  test('markRaw on non-extensible objects', () => {
+    const foo = Object.seal({})
+    markRaw(foo)
+    expect(isReactive(reactive(foo))).toBe(false)
+  })
+
   test('should not observe non-extensible objects', () => {
     const obj = reactive({
       foo: Object.preventExtensions({ a: 1 }),

test/unit/features/v3/reactivity/readonly.spec.ts

@@ -525,4 +525,14 @@ describe('reactivity/readonly', () => {
     expect(readonlyFoo.x).toBe(1)
     expect(`et operation on key "x" failed`).toHaveBeenWarned()
   })
+
+  test('warn non-extensible objects', () => {
+    const foo = Object.freeze({ a: 1 })
+    try {
+      readonly(foo)
+    } catch (e) {}
+    expect(
+      `Vue 2 does not support creating readonly proxy for non-extensible object`
+    ).toHaveBeenWarned()
+  })
 })

test/unit/modules/compiler/parser.spec.ts

@@ -767,7 +767,7 @@ describe('parser', () => {
     expect(ast.directives[0].arg).toBe('field1')
   })
 
-  it('attribute with modifiered directive', () => {
+  it('attribute with modified directive', () => {
     const ast = parse(
       '<input type="text" name="field1" :value="msg" v-validate.on.off>',
       baseOptions

test/unit/modules/observer/dep.spec.ts

@@ -1,4 +1,4 @@
-import Dep from 'core/observer/dep'
+import Dep, { cleanupDeps } from 'core/observer/dep'
 
 describe('Dep', () => {
   let dep
@@ -24,8 +24,13 @@ describe('Dep', () => {
 
   describe('removeSub()', () => {
     it('should remove sub', () => {
-      dep.subs.push(null)
-      dep.removeSub(null)
+      const sub = {}
+      dep.subs.push(sub)
+      dep.removeSub(sub)
+      expect(dep.subs.includes(sub)).toBe(false)
+
+      // nulled subs are cleared on next flush
+      cleanupDeps()
       expect(dep.subs.length).toBe(0)
     })
   })

test/unit/modules/util/toString.spec.ts

@@ -0,0 +1,11 @@
+import { toString } from 'core/util/index'
+import { ref } from 'v3'
+
+test('should unwrap refs', () => {
+  expect(
+    toString({
+      a: ref(0),
+      b: { c: ref(1) }
+    })
+  ).toBe(JSON.stringify({ a: 0, b: { c: 1 } }, null, 2))
+})

test/unit/modules/vdom/modules/style.spec.ts

@@ -36,4 +36,19 @@ describe('vdom style module', () => {
     expect(elm.style.fontSize).toBe('')
     expect(elm.style.display).toBe('block')
   })
+
+  it('border related style should update correctly', () => {
+    const vnode1 = new VNode('p', {
+      style: { border: '10px solid red', 'border-bottom': '10px solid blue' }
+    })
+    const vnode2 = new VNode('p', {
+      style: {
+        'border-right': '10px solid red',
+        'border-bottom': '10px solid blue'
+      }
+    })
+    patch(null, vnode1)
+    const elm = patch(vnode1, vnode2)
+    expect(elm.style.borderBottom).toBe('10px solid blue')
+  })
 })

test/unit/modules/vdom/patch/edge-cases.spec.ts

@@ -467,4 +467,42 @@ describe('vdom patch: edge cases', () => {
     vm.visible = false
     vm.$nextTick(done)
   })
+
+  it('should call directive\'s inserted hook correctly when template root is changed', done => {
+    let insertCalled = false
+    const vm = new Vue({
+      data: {
+        isOn: false
+      },
+      components: {
+        'v-switch': {
+          props: {
+            on: Boolean
+          },
+          template: `
+            <div v-if="on" key="on">On</div>
+            <div v-else key="off">Off</div>`
+        }
+      },
+      directives: {
+        foo: {
+          inserted() {
+            insertCalled = true
+          }
+        }
+      },
+      template: `
+        <transition-group>
+          <v-switch key="swicth" v-foo :on="isOn"/>
+        </transition-group>
+      `
+    }).$mount()
+
+    vm.isOn = true
+    insertCalled = false
+    waitForUpdate(() => {
+      expect(vm.$el.textContent).toMatch('On')
+      expect(insertCalled).toBe(true)
+    }).then(done)
+  })
 })

tsconfig.json

@@ -6,6 +6,7 @@
     "target": "esnext",
     "module": "ESNext",
     "moduleResolution": "node",
+    "newLine": "LF",
     "strict": true,
 
     "allowJs": true,

types/built-in-components.d.ts

@@ -0,0 +1,63 @@
+import { DefineComponent } from './v3-define-component'
+
+type Hook<T = () => void> = T | T[]
+
+export interface TransitionProps {
+  name?: string
+  appear?: boolean
+  css?: boolean
+  mode?: 'in-out' | 'out-in' | 'default'
+  type?: 'transition' | 'animation'
+
+  duration?:
+    | number
+    | string
+    | {
+        enter: number
+        leave: number
+      }
+
+  // classes
+  enterClass?: string
+  enterActiveClass?: string
+  enterToClass?: string
+  appearClass?: string
+  appearActiveClass?: string
+  appearToClass?: string
+  leaveClass?: string
+  leaveActiveClass?: string
+  leaveToClass?: string
+
+  // event hooks
+  onBeforeEnter?: Hook<(el: Element) => void>
+  onEnter?: Hook<(el: Element, done: () => void) => void>
+  onAfterEnter?: Hook<(el: Element) => void>
+  onEnterCancelled?: Hook<(el: Element) => void>
+  onBeforeLeave?: Hook<(el: Element) => void>
+  onLeave?: Hook<(el: Element, done: () => void) => void>
+  onAfterLeave?: Hook<(el: Element) => void>
+  onLeaveCancelled?: Hook<(el: Element) => void>
+  onBeforeAppear?: Hook<(el: Element) => void>
+  onAppear?: Hook<(el: Element, done: () => void) => void>
+  onAfterAppear?: Hook<(el: Element) => void>
+  onAppearCancelled?: Hook<(el: Element) => void>
+}
+
+export declare const Transition: DefineComponent<TransitionProps>
+
+export type TransitionGroupProps = Omit<TransitionProps, 'mode'> & {
+  tag?: string
+  moveClass?: string
+}
+
+export declare const TransitionGroup: DefineComponent<TransitionGroupProps>
+
+type MatchPattern = string | RegExp | (string | RegExp)[]
+
+export interface KeepAliveProps {
+  include?: MatchPattern
+  exclude?: MatchPattern
+  max?: number | string
+}
+
+export declare const KeepAlive: DefineComponent<KeepAliveProps>

types/common.d.ts

@@ -14,7 +14,7 @@ type Equal<Left, Right> =
 
 export type HasDefined<T> = Equal<T, unknown> extends true ? false : true
 
-// If the the type T accepts type "any", output type Y, otherwise output type N.
+// If the type T accepts type "any", output type Y, otherwise output type N.
 // https://stackoverflow.com/questions/49927523/disallow-call-with-any/49928360#49928360
 export type IfAny<T, Y, N> = 0 extends 1 & T ? Y : N
 

types/index.d.ts

@@ -1,6 +1,7 @@
 import { Vue } from './vue'
 import './umd'
 import './jsx'
+export * from './jsx'
 
 export default Vue
 
@@ -49,7 +50,12 @@ export {
   ComputedOptions as ComponentComputedOptions,
   MethodOptions as ComponentMethodOptions,
   ComponentPropsOptions,
-  ComponentCustomOptions
+  ComponentCustomOptions,
+  ComponentOptionsMixin,
+  ComponentOptionsWithoutProps,
+  ComponentOptionsWithArrayProps,
+  ComponentOptionsWithProps,
+  ComponentOptionsBase
 } from './v3-component-options'
 export {
   ComponentInstance,
@@ -71,3 +77,5 @@ export {
   FunctionDirective,
   Directive
 } from './v3-directive'
+
+export * from './built-in-components'

types/jsx.d.ts

@@ -731,7 +731,7 @@ export interface SVGAttributes extends AriaAttributes, EventHandlers<Events> {
    * @see https://www.w3.org/TR/SVG/styling.html#ElementSpecificStyling
    */
   class?: any
-  style?: string | CSSProperties
+  style?: StyleValue
 
   color?: string
   height?: Numberish
@@ -1297,7 +1297,9 @@ export interface Events {
 }
 
 type EventHandlers<E> = {
-  [K in keyof E]?: E[K] extends Function ? E[K] : (payload: E[K]) => void
+  [K in keyof E]?: E[K] extends (...args: any) => any
+    ? E[K]
+    : (payload: E[K]) => void
 }
 
 type ReservedProps = {

types/options.d.ts

@@ -4,6 +4,7 @@ import { SetupContext } from './v3-setup-context'
 import { DebuggerEvent } from './v3-generated'
 import { DefineComponent } from './v3-define-component'
 import { ComponentOptionsMixin } from './v3-component-options'
+import { ObjectDirective, FunctionDirective } from './v3-directive'
 
 type Constructor = {
   new (...args: any[]): any
@@ -180,7 +181,7 @@ export interface ComponentOptions<
   propsData?: object
   computed?: Accessors<Computed>
   methods?: Methods
-  watch?: Record<string, WatchOptionsWithHandler<any> | WatchHandler<any>>
+  watch?: Record<string, WatchOptionsWithHandler<any> | WatchHandler<any> | Array<WatchOptionsWithHandler<any> | WatchHandler<any>>>
 
   setup?: (
     this: void,
@@ -209,7 +210,7 @@ export interface ComponentOptions<
   activated?(): void
   deactivated?(): void
   errorCaptured?(err: Error, vm: Vue, info: string): boolean | void
-  serverPrefetch?(this: V): Promise<void>
+  serverPrefetch?(): Promise<void>
   renderTracked?(e: DebuggerEvent): void
   renderTriggerd?(e: DebuggerEvent): void
 
@@ -318,6 +319,9 @@ export interface DirectiveBinding extends Readonly<VNodeDirective> {
   readonly modifiers: { [key: string]: boolean }
 }
 
+/**
+ * @deprecated use {@link FunctionDirective} instead
+ */
 export type DirectiveFunction = (
   el: HTMLElement,
   binding: DirectiveBinding,
@@ -325,6 +329,9 @@ export type DirectiveFunction = (
   oldVnode: VNode
 ) => void
 
+/**
+ * @deprecated use {@link ObjectDirective} instead
+ */
 export interface DirectiveOptions {
   bind?: DirectiveFunction
   inserted?: DirectiveFunction

types/test/async-component-test.ts

@@ -41,4 +41,4 @@ const e: AsyncComponent = () => ({
 })
 
 // Test that Vue.component accepts any AsyncComponent
-Vue.component('async-compponent1', a)
+Vue.component('async-component1', a)

types/test/options-test.ts

@@ -172,7 +172,14 @@ Vue.component('component', {
     d: {
       handler: 'someMethod',
       immediate: true
-    }
+    },
+    e: [
+      'handle1',
+      function handle2 (val, oldVal) {},
+      {
+        handler: function handle3 (val, oldVal) {},
+      }
+    ],
   },
   el: '#app',
   template: '<div>{{ message }}</div>',

types/test/setup-helpers-test.ts

@@ -19,15 +19,19 @@ describe('defineProps w/ type declaration + withDefaults', () => {
       arr?: string[]
       obj?: { x: number }
       fn?: (e: string) => void
-      x?: string
       genStr?: string
+      x?: string
+      y?: string
+      z?: string
     }>(),
     {
       number: 123,
       arr: () => [],
       obj: () => ({ x: 123 }),
       fn: () => {},
-      genStr: () => ''
+      genStr: () => '',
+      y: undefined,
+      z: 'string'
     }
   )
 
@@ -35,9 +39,15 @@ describe('defineProps w/ type declaration + withDefaults', () => {
   res.arr.push('hi')
   res.obj.x
   res.fn('hi')
+  res.genStr.slice()
   // @ts-expect-error
   res.x.slice()
-  res.genStr.slice()
+  // @ts-expect-error
+  res.y.slice()
+
+  expectType<string | undefined>(res.x)
+  expectType<string | undefined>(res.y)
+  expectType<string>(res.z)
 })
 
 describe('defineProps w/ union type declaration + withDefaults', () => {

types/test/v3/reactivity-test.ts

@@ -15,7 +15,7 @@ import {
   set,
   del
 } from '../../index'
-import { describe, expectType } from '../utils'
+import { IsUnion, describe, expectType } from '../utils'
 
 function plainType(arg: number | Ref<number>) {
   // ref coercing
@@ -385,3 +385,14 @@ describe('set/del', () => {
   // @ts-expect-error
   del([], 'fse', 123)
 })
+
+
+{
+  //#12978
+  type Steps = { step: '1' } | { step: '2' }
+  const shallowUnionGenParam = shallowRef<Steps>({ step: '1' })
+  const shallowUnionAsCast = shallowRef({ step: '1' } as Steps)
+
+  expectType<IsUnion<typeof shallowUnionGenParam>>(false)
+  expectType<IsUnion<typeof shallowUnionAsCast>>(false)
+}

types/test/v3/tsx-test.tsx

@@ -1,4 +1,4 @@
-import { VNode, defineComponent } from '../../index'
+import { VNode, defineComponent, ref, RenderContext } from '../../index'
 import { expectType } from '../utils'
 
 expectType<VNode>(<div />)
@@ -22,6 +22,17 @@ expectError(<div foo="bar" />)
 expectType<JSX.Element>(<div key="foo" />)
 expectType<JSX.Element>(<div ref="bar" />)
 
+// allow Ref type type on arbitrary element
+const fooRef = ref<HTMLElement>()
+expectType<JSX.Element>(<div ref={fooRef} />)
+expectType<JSX.Element>(
+  <div
+    ref={el => {
+      fooRef.value = el as HTMLElement
+    }}
+  />
+)
+
 expectType<JSX.Element>(
   <input
     onInput={e => {
@@ -51,5 +62,8 @@ const Foo = defineComponent({
 // working
 ;<Foo bar={1} />
 ;<Foo bar={1} foo="baz" />
-
 ;<div slot="x" />
+
+export default ({ data }: RenderContext) => {
+  return <button {...data} />
+}

types/test/v3/watch-test.ts

@@ -1,4 +1,4 @@
-import { ref, computed, watch } from '../../index'
+import { ref, computed, watch, shallowRef } from '../../index'
 import { expectType } from '../utils'
 
 const source = ref('foo')
@@ -76,3 +76,17 @@ watch([someRef, otherRef], values => {
   // no type error
   console.log(value2.a)
 })
+
+{
+  //#12978
+  type Steps = { step: '1' } | { step: '2' }
+  const shallowUnionGenParam = shallowRef<Steps>({ step: '1' })
+  const shallowUnionAsCast = shallowRef({ step: '1' } as Steps)
+
+  watch(shallowUnionGenParam, value => {
+    expectType<Steps>(value)
+  })
+  watch(shallowUnionAsCast, value => {
+    expectType<Steps>(value)
+  })
+}

types/test/vue-test.ts

@@ -228,21 +228,21 @@ obj.a++
 const ComponentWithStyleInVNodeData = Vue.extend({
   render(h) {
     const elementWithStyleAsString = h('div', {
-      style: 'background-color: red;'
+      style: '--theme-color: black;'
     })
 
-    const elementWithStyleAsObject = h('div', {
-      style: { backgroundColor: 'green' }
+    const elementWithStyleCSSProperties = h('div', {
+      style: { ['--theme-color' as any]: 'black' }
     })
 
-    const elementWithStyleAsArrayOfObjects = h('div', {
-      style: [{ backgroundColor: 'blue' }]
+    const elementWithStyleAsArrayOfStyleValues = h('div', {
+      style: [{ ['--theme-color' as any]: 'black' }]
     })
 
     return h('div', undefined, [
       elementWithStyleAsString,
-      elementWithStyleAsObject,
-      elementWithStyleAsArrayOfObjects
+      elementWithStyleCSSProperties,
+      elementWithStyleAsArrayOfStyleValues
     ])
   }
 })

types/v3-setup-helpers.d.ts

@@ -110,7 +110,11 @@ type InferDefault<P, T> = T extends
   : (props: P) => T
 
 type PropsWithDefaults<Base, Defaults> = Base & {
-  [K in keyof Defaults]: K extends keyof Base ? NotUndefined<Base[K]> : never
+  [K in keyof Defaults]: K extends keyof Base
+    ? Defaults[K] extends undefined
+      ? Base[K]
+      : NotUndefined<Base[K]>
+    : never
 }
 
 /**

types/vnode.d.ts

@@ -1,5 +1,8 @@
+import { StyleValue } from './jsx'
 import { Vue } from './vue'
 import { DirectiveFunction, DirectiveOptions } from './options'
+import { Ref } from './v3-generated'
+import { ComponentPublicInstance } from './v3-component-public-instance'
 
 /**
  * For extending allowed non-declared props on components in TSX
@@ -19,6 +22,7 @@ type ScopedSlotReturnValue =
   | VNode
   | string
   | boolean
+  | number
   | null
   | undefined
   | ScopedSlotReturnArray
@@ -34,6 +38,7 @@ export type VNodeChildren =
   | [ScopedSlot]
   | string
   | boolean
+  | number
   | null
   | undefined
 export interface VNodeChildrenArrayContents
@@ -65,17 +70,25 @@ export interface VNodeComponentOptions {
   tag?: string
 }
 
+export type VNodeRef =
+  | string
+  | Ref
+  | ((
+      ref: Element | ComponentPublicInstance | null,
+      refs: Record<string, any>
+    ) => void)
+
 export interface VNodeData {
   key?: string | number
   slot?: string
   scopedSlots?: { [key: string]: ScopedSlot | undefined }
-  ref?: string
+  ref?: VNodeRef
   refInFor?: boolean
   tag?: string
   staticClass?: string
   class?: any
   staticStyle?: { [key: string]: any }
-  style?: string | object[] | object
+  style?: StyleValue
   props?: { [key: string]: any }
   attrs?: { [key: string]: any }
   domProps?: { [key: string]: any }

types/vue.d.ts

@@ -22,6 +22,7 @@ import {
   ExtractComputedReturns,
   ComponentOptionsMixin
 } from './v3-component-options'
+import { Directive, ObjectDirective } from './v3-directive'
 
 export interface CreateElement {
   (
@@ -338,6 +339,10 @@ export interface VueConstructor<V extends Vue = Vue> {
     id: string,
     definition?: DirectiveOptions | DirectiveFunction
   ): DirectiveOptions
+  directive(
+    id: string,
+    definition?: Directive
+  ): ObjectDirective
   filter(id: string, definition?: Function): Function
 
   component(id: string): VueConstructor