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fix(build): wait for in-flight stylesheets in preload helper (fix #23652) - #23662

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sapphi-red merged 3 commits into
vitejs:mainfrom
bhumin18:fix/preload-css-every-import
Oct 8, 2026
Merged

sapphi-red merged 3 commits into
vitejs:mainfrom
bhumin18:fix/preload-css-every-import

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@bhumin18 bhumin18 commented Oct 6, 2026

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Description

Fixes #23652.

In the build preload helper (packages/vite/src/node/plugins/importAnalysisBuild.ts), seen[dep.href] was set to true synchronously as soon as a stylesheet <link> was created and appended.

If another dynamic import requested the same chunk (or another chunk sharing that stylesheet) while the stylesheet was still loading, it hit if (dep.href in seen) return and resolved immediately without awaiting the in-flight load event, causing a flash of unstyled content (FOUC).

This PR retains the pending CSS preload Promise in seen[dep.href] while in-flight so subsequent imports share and wait for the same loading promise. Once settled (load or error), seen[dep.href] resets to undefined, allowing any later imports after load to resolve immediately without delay or duplicate link insertions.

Additional context

  • Added unit tests in importAnalysisBuild.spec.ts testing in-flight stylesheet waiting, deduplication, and error propagation.
  • Exported getPreloadCode with explicit return type annotation for testing.

What is the purpose of this pull request?

  • Bug fix
  • Feature
  • Documentation update
  • Code style update (formatting, local variables)
  • Refactoring (no functional changes, no api changes)
  • Build / CI related changes
  • Other, please describe:

Before submitting the PR, please make sure you do the following

  • Read the Contributing Guidelines.
  • Read the AI Policy.
  • Check that there isn't already a PR that solves the problem the same way.
  • Provide an explanation in the PR description above.
  • Add relevant tests.

@sapphi-red sapphi-red added feat: css p3-minor-bug An edge case that only affects very specific usage (priority) feat: build labels Oct 7, 2026
@sapphi-red
sapphi-red merged commit 036b745 into vitejs:main Oct 8, 2026
27 of 28 checks passed
renovate Bot added a commit to andrei-picus-tink/auto-renovate that referenced this pull request Oct 9, 2026
| datasource | package | from  | to    |
| ---------- | ------- | ----- | ----- |
| npm        | vite    | 8.3.0 | 8.3.4 |


## [v8.3.4](https://github.com/vitejs/vite/blob/HEAD/packages/vite/CHANGELOG.md#small-834-2026-10-08-small)

##### Features

- **bundled-dev:** support `import.meta.hot.acceptExports` ([#23463](vitejs/vite#23463)) ([bc0f21c](vitejs/vite@bc0f21c))

##### Bug Fixes

- avoid mutating hmr defaults (fix [#23575](vitejs/vite#23575)) ([#23576](vitejs/vite#23576)) ([574d5e3](vitejs/vite@574d5e3))
- **build:** correct preloads when chunkImportMap is enabled with non-root base ([#23698](vitejs/vite#23698)) ([2a8c0f0](vitejs/vite@2a8c0f0))
- **build:** wait for in-flight stylesheets in preload helper (fix [#23652](vitejs/vite#23652)) ([#23662](vitejs/vite#23662)) ([036b745](vitejs/vite@036b745))
- **bundled-dev:** serve `/@vite/client` and stub `@vite/env` ([#23664](vitejs/vite#23664)) ([5afc5a8](vitejs/vite@5afc5a8))
- **client:** skip rewriting unchanged adopted styles ([#23697](vitejs/vite#23697)) ([fa71469](vitejs/vite@fa71469))
- **css:** resolve imported preprocessors from their file path with lightningcss ([#23688](vitejs/vite#23688)) ([cf52011](vitejs/vite@cf52011))
- **deps:** update all non-major dependencies ([#23648](vitejs/vite#23648)) ([8a4c19c](vitejs/vite@8a4c19c))
- **deps:** update rolldown-related dependencies ([#23649](vitejs/vite#23649)) ([794516d](vitejs/vite@794516d))
- **dev:** a restart requested during a restart used to be dropped (fix [#23392](vitejs/vite#23392)) ([#23484](vitejs/vite#23484)) ([70d56ea](vitejs/vite@70d56ea))
- don't treat modules ending with js-like query as js ([#23687](vitejs/vite#23687)) ([fcb6f12](vitejs/vite@fcb6f12))
- **html:** avoid adding filesystem root to watcher ([#23689](vitejs/vite#23689)) ([3a7f2ae](vitejs/vite@3a7f2ae))
- **html:** skip caching CSS of chunks in a cycle (fix [#23628](vitejs/vite#23628)) ([#23636](vitejs/vite#23636)) ([15d82f7](vitejs/vite@15d82f7))
- **optimizer:** scan deep imports with custom extensions ([#23678](vitejs/vite#23678)) ([8579189](vitejs/vite@8579189))
- remove input option unescaping for now ([#23694](vitejs/vite#23694)) ([facc2fb](vitejs/vite@facc2fb))
- **server:** match static aliases on path boundaries ([#23643](vitejs/vite#23643)) ([b28db28](vitejs/vite@b28db28))
- **watcher:** normalize file before root check in `ensureWatchedFile` ([#23673](vitejs/vite#23673)) ([12bb28c](vitejs/vite@12bb28c))

##### Performance Improvements

- **module-runner:** skip cloning call sites that have no source map ([#23646](vitejs/vite#23646)) ([3d67486](vitejs/vite@3d67486))

##### Code Refactoring

- **bundled-dev:** import CSS HMR helpers from `/@vite/client` ([#23674](vitejs/vite#23674)) ([182f5b2](vitejs/vite@182f5b2))


## [v8.3.3](https://github.com/vitejs/vite/blob/HEAD/packages/vite/CHANGELOG.md#small-833-2026-10-06-small)

##### Bug Fixes

- **deps:** update launch-editor to v2.14.2 ([#23654](vitejs/vite#23654)) ([22fd1d5](vitejs/vite@22fd1d5))
- **html:** filename passed to transformIndexHtml should not include queries ([#23653](vitejs/vite#23653)) ([7dafd8e](vitejs/vite@7dafd8e))
- **server:** check `fs.serve` for `?vite-wasm-instance` ([#23655](vitejs/vite#23655)) ([ba8b7ab](vitejs/vite@ba8b7ab))
- **server:** store ids to `safeModulePaths` rather than URLs ([#23656](vitejs/vite#23656)) ([c3e06f9](vitejs/vite@c3e06f9))


## [v8.3.2](https://github.com/vitejs/vite/blob/HEAD/packages/vite/CHANGELOG.md#small-832-2026-10-01-small)

##### Bug Fixes

- **build:** preload CSS correctly when `renderBuiltUrl` returns URLs with queries ([#23611](vitejs/vite#23611)) ([64e0a21](vitejs/vite@64e0a21))
- **bundled-dev:** serve lazy chunk sourcemaps ([#23026](vitejs/vite#23026)) ([eb7aa9a](vitejs/vite@eb7aa9a))
- **bundled-dev:** serve the rolldown runtime from the installed rolldown ([#23568](vitejs/vite#23568)) ([bc598a6](vitejs/vite@bc598a6))
- **deps:** update all non-major dependencies ([#23601](vitejs/vite#23601)) ([9944fa6](vitejs/vite@9944fa6))
- **deps:** update rolldown-related dependencies ([#23602](vitejs/vite#23602)) ([88c1741](vitejs/vite@88c1741))
- **html:** resolve percent-encoded srcset urls ([#23609](vitejs/vite#23609)) ([53f1ce7](vitejs/vite@53f1ce7))
- limit size of object and array printing via `forwardConsole` ([#23565](vitejs/vite#23565)) ([e64a587](vitejs/vite@e64a587))
- merge `build.rolldownOptions.output.minify` correctly ([#23536](vitejs/vite#23536)) ([bba3bb8](vitejs/vite@bba3bb8))
- **optimize-deps:** avoid "unsupported" warnings for browser:false mappings ([#23590](vitejs/vite#23590)) ([5e4b9ca](vitejs/vite@5e4b9ca))
- **optimizer:** preserve excluded optional peer require fallbacks ([#23600](vitejs/vite#23600)) ([a2bd6fa](vitejs/vite@a2bd6fa))
- pass queries to `renderBuiltUrl` ([#23586](vitejs/vite#23586)) ([744269e](vitejs/vite@744269e))
- **server:** handle file watcher errors without crashing ([#23503](vitejs/vite#23503)) ([6894f5c](vitejs/vite@6894f5c))
- **server:** release previous environments after initialization ([#23499](vitejs/vite#23499)) ([5a3a010](vitejs/vite@5a3a010))
- **ssr:** encode whitespace in module runner sourceURL ([#23513](vitejs/vite#23513)) ([bbc8812](vitejs/vite@bbc8812))
- **worker:** align worker urls in client and server when using terser ([#23614](vitejs/vite#23614)) ([24bd331](vitejs/vite@24bd331))

##### Performance Improvements

- avoid encoding intermediate source maps ([#23461](vitejs/vite#23461)) ([89574f6](vitejs/vite@89574f6))
- **build:** avoid quadratic link scan in the preload helper ([#23510](vitejs/vite#23510)) ([cf5c028](vitejs/vite@cf5c028))
- only register time middleware when debug logging is enabled ([#23621](vitejs/vite#23621)) ([94d0080](vitejs/vite@94d0080))

##### Documentation

- fix dead og-image PNG links in vite6/vite7 changelog entries ([#23594](vitejs/vite#23594)) ([1929b4c](vitejs/vite@1929b4c))

##### Miscellaneous Chores

- **deps:** update vitest monorepo to v5 ([#23604](vitejs/vite#23604)) ([24339f4](vitejs/vite@24339f4))

##### Code Refactoring

- use `tinyexec` instead of `cross-spawn` ([#23583](vitejs/vite#23583)) ([db915e5](vitejs/vite@db915e5))

##### Tests

- **bundled-dev:** accept a rolldown dev runtime with no helper imports ([#23606](vitejs/vite#23606)) ([634745d](vitejs/vite@634745d))


## [v8.3.1](https://github.com/vitejs/vite/blob/HEAD/packages/vite/CHANGELOG.md#small-831-2026-09-24-small)

##### Bug Fixes

- **deps:** update all non-major dependencies ([#23482](vitejs/vite#23482)) ([3c752c8](vitejs/vite@3c752c8))
- **deps:** update all non-major dependencies ([#23537](vitejs/vite#23537)) ([e8990c4](vitejs/vite@e8990c4))
- **deps:** update rolldown-related dependencies ([#23483](vitejs/vite#23483)) ([9aecbbf](vitejs/vite@9aecbbf))
- handle `server.ws: false` in mergeConfig ([#23511](vitejs/vite#23511)) ([f68c0d5](vitejs/vite@f68c0d5))
- merge `build.rolldownOptions.output.comments` correctly ([#23514](vitejs/vite#23514)) ([4aba8d8](vitejs/vite@4aba8d8))
- **optimizer:** don't skip imports whose binding starts with type ([#23540](vitejs/vite#23540)) ([39330f4](vitejs/vite@39330f4))
- **optimizer:** resolve pending discovered dep processing on close before init ([#23567](vitejs/vite#23567)) ([5f89433](vitejs/vite@5f89433))
- **server:** avoid reinitializing watcher when adding file after server close ([#23572](vitejs/vite#23572)) ([6f831f9](vitejs/vite@6f831f9))
- **sourcemap:** skip URL source roots when injecting sources content ([#23519](vitejs/vite#23519)) ([04fc30a](vitejs/vite@04fc30a))

##### Miscellaneous Chores

- merge prereleases in changelog ([#23466](vitejs/vite#23466)) ([99bd9d1](vitejs/vite@99bd9d1))
- **optimizer:** add debug log when waiting for dep before init ([#23566](vitejs/vite#23566)) ([63567c7](vitejs/vite@63567c7))
- update `optimizeDeps.include` comment ([#23489](vitejs/vite#23489)) ([6a84c72](vitejs/vite@6a84c72))

##### Code Refactoring

- assets regexp use non-capture ([#23491](vitejs/vite#23491)) ([f4b4431](vitejs/vite@f4b4431))
- remove duplicate configurations ([#23532](vitejs/vite#23532)) ([9abd99b](vitejs/vite@9abd99b))
- replace `find` with `some` ([#23554](vitejs/vite#23554)) ([af7cdf6](vitejs/vite@af7cdf6))
renovate Bot added a commit to andrei-picus-tink/auto-renovate that referenced this pull request Oct 10, 2026
| datasource | package | from  | to    |
| ---------- | ------- | ----- | ----- |
| npm        | vite    | 8.3.0 | 8.3.4 |


## [v8.3.4](https://github.com/vitejs/vite/blob/HEAD/packages/vite/CHANGELOG.md#small-834-2026-10-08-small)

##### Features

- **bundled-dev:** support `import.meta.hot.acceptExports` ([#23463](vitejs/vite#23463)) ([bc0f21c](vitejs/vite@bc0f21c))

##### Bug Fixes

- avoid mutating hmr defaults (fix [#23575](vitejs/vite#23575)) ([#23576](vitejs/vite#23576)) ([574d5e3](vitejs/vite@574d5e3))
- **build:** correct preloads when chunkImportMap is enabled with non-root base ([#23698](vitejs/vite#23698)) ([2a8c0f0](vitejs/vite@2a8c0f0))
- **build:** wait for in-flight stylesheets in preload helper (fix [#23652](vitejs/vite#23652)) ([#23662](vitejs/vite#23662)) ([036b745](vitejs/vite@036b745))
- **bundled-dev:** serve `/@vite/client` and stub `@vite/env` ([#23664](vitejs/vite#23664)) ([5afc5a8](vitejs/vite@5afc5a8))
- **client:** skip rewriting unchanged adopted styles ([#23697](vitejs/vite#23697)) ([fa71469](vitejs/vite@fa71469))
- **css:** resolve imported preprocessors from their file path with lightningcss ([#23688](vitejs/vite#23688)) ([cf52011](vitejs/vite@cf52011))
- **deps:** update all non-major dependencies ([#23648](vitejs/vite#23648)) ([8a4c19c](vitejs/vite@8a4c19c))
- **deps:** update rolldown-related dependencies ([#23649](vitejs/vite#23649)) ([794516d](vitejs/vite@794516d))
- **dev:** a restart requested during a restart used to be dropped (fix [#23392](vitejs/vite#23392)) ([#23484](vitejs/vite#23484)) ([70d56ea](vitejs/vite@70d56ea))
- don't treat modules ending with js-like query as js ([#23687](vitejs/vite#23687)) ([fcb6f12](vitejs/vite@fcb6f12))
- **html:** avoid adding filesystem root to watcher ([#23689](vitejs/vite#23689)) ([3a7f2ae](vitejs/vite@3a7f2ae))
- **html:** skip caching CSS of chunks in a cycle (fix [#23628](vitejs/vite#23628)) ([#23636](vitejs/vite#23636)) ([15d82f7](vitejs/vite@15d82f7))
- **optimizer:** scan deep imports with custom extensions ([#23678](vitejs/vite#23678)) ([8579189](vitejs/vite@8579189))
- remove input option unescaping for now ([#23694](vitejs/vite#23694)) ([facc2fb](vitejs/vite@facc2fb))
- **server:** match static aliases on path boundaries ([#23643](vitejs/vite#23643)) ([b28db28](vitejs/vite@b28db28))
- **watcher:** normalize file before root check in `ensureWatchedFile` ([#23673](vitejs/vite#23673)) ([12bb28c](vitejs/vite@12bb28c))

##### Performance Improvements

- **module-runner:** skip cloning call sites that have no source map ([#23646](vitejs/vite#23646)) ([3d67486](vitejs/vite@3d67486))

##### Code Refactoring

- **bundled-dev:** import CSS HMR helpers from `/@vite/client` ([#23674](vitejs/vite#23674)) ([182f5b2](vitejs/vite@182f5b2))


## [v8.3.3](https://github.com/vitejs/vite/blob/HEAD/packages/vite/CHANGELOG.md#small-833-2026-10-06-small)

##### Bug Fixes

- **deps:** update launch-editor to v2.14.2 ([#23654](vitejs/vite#23654)) ([22fd1d5](vitejs/vite@22fd1d5))
- **html:** filename passed to transformIndexHtml should not include queries ([#23653](vitejs/vite#23653)) ([7dafd8e](vitejs/vite@7dafd8e))
- **server:** check `fs.serve` for `?vite-wasm-instance` ([#23655](vitejs/vite#23655)) ([ba8b7ab](vitejs/vite@ba8b7ab))
- **server:** store ids to `safeModulePaths` rather than URLs ([#23656](vitejs/vite#23656)) ([c3e06f9](vitejs/vite@c3e06f9))


## [v8.3.2](https://github.com/vitejs/vite/blob/HEAD/packages/vite/CHANGELOG.md#small-832-2026-10-01-small)

##### Bug Fixes

- **build:** preload CSS correctly when `renderBuiltUrl` returns URLs with queries ([#23611](vitejs/vite#23611)) ([64e0a21](vitejs/vite@64e0a21))
- **bundled-dev:** serve lazy chunk sourcemaps ([#23026](vitejs/vite#23026)) ([eb7aa9a](vitejs/vite@eb7aa9a))
- **bundled-dev:** serve the rolldown runtime from the installed rolldown ([#23568](vitejs/vite#23568)) ([bc598a6](vitejs/vite@bc598a6))
- **deps:** update all non-major dependencies ([#23601](vitejs/vite#23601)) ([9944fa6](vitejs/vite@9944fa6))
- **deps:** update rolldown-related dependencies ([#23602](vitejs/vite#23602)) ([88c1741](vitejs/vite@88c1741))
- **html:** resolve percent-encoded srcset urls ([#23609](vitejs/vite#23609)) ([53f1ce7](vitejs/vite@53f1ce7))
- limit size of object and array printing via `forwardConsole` ([#23565](vitejs/vite#23565)) ([e64a587](vitejs/vite@e64a587))
- merge `build.rolldownOptions.output.minify` correctly ([#23536](vitejs/vite#23536)) ([bba3bb8](vitejs/vite@bba3bb8))
- **optimize-deps:** avoid "unsupported" warnings for browser:false mappings ([#23590](vitejs/vite#23590)) ([5e4b9ca](vitejs/vite@5e4b9ca))
- **optimizer:** preserve excluded optional peer require fallbacks ([#23600](vitejs/vite#23600)) ([a2bd6fa](vitejs/vite@a2bd6fa))
- pass queries to `renderBuiltUrl` ([#23586](vitejs/vite#23586)) ([744269e](vitejs/vite@744269e))
- **server:** handle file watcher errors without crashing ([#23503](vitejs/vite#23503)) ([6894f5c](vitejs/vite@6894f5c))
- **server:** release previous environments after initialization ([#23499](vitejs/vite#23499)) ([5a3a010](vitejs/vite@5a3a010))
- **ssr:** encode whitespace in module runner sourceURL ([#23513](vitejs/vite#23513)) ([bbc8812](vitejs/vite@bbc8812))
- **worker:** align worker urls in client and server when using terser ([#23614](vitejs/vite#23614)) ([24bd331](vitejs/vite@24bd331))

##### Performance Improvements

- avoid encoding intermediate source maps ([#23461](vitejs/vite#23461)) ([89574f6](vitejs/vite@89574f6))
- **build:** avoid quadratic link scan in the preload helper ([#23510](vitejs/vite#23510)) ([cf5c028](vitejs/vite@cf5c028))
- only register time middleware when debug logging is enabled ([#23621](vitejs/vite#23621)) ([94d0080](vitejs/vite@94d0080))

##### Documentation

- fix dead og-image PNG links in vite6/vite7 changelog entries ([#23594](vitejs/vite#23594)) ([1929b4c](vitejs/vite@1929b4c))

##### Miscellaneous Chores

- **deps:** update vitest monorepo to v5 ([#23604](vitejs/vite#23604)) ([24339f4](vitejs/vite@24339f4))

##### Code Refactoring

- use `tinyexec` instead of `cross-spawn` ([#23583](vitejs/vite#23583)) ([db915e5](vitejs/vite@db915e5))

##### Tests

- **bundled-dev:** accept a rolldown dev runtime with no helper imports ([#23606](vitejs/vite#23606)) ([634745d](vitejs/vite@634745d))


## [v8.3.1](https://github.com/vitejs/vite/blob/HEAD/packages/vite/CHANGELOG.md#small-831-2026-09-24-small)

##### Bug Fixes

- **deps:** update all non-major dependencies ([#23482](vitejs/vite#23482)) ([3c752c8](vitejs/vite@3c752c8))
- **deps:** update all non-major dependencies ([#23537](vitejs/vite#23537)) ([e8990c4](vitejs/vite@e8990c4))
- **deps:** update rolldown-related dependencies ([#23483](vitejs/vite#23483)) ([9aecbbf](vitejs/vite@9aecbbf))
- handle `server.ws: false` in mergeConfig ([#23511](vitejs/vite#23511)) ([f68c0d5](vitejs/vite@f68c0d5))
- merge `build.rolldownOptions.output.comments` correctly ([#23514](vitejs/vite#23514)) ([4aba8d8](vitejs/vite@4aba8d8))
- **optimizer:** don't skip imports whose binding starts with type ([#23540](vitejs/vite#23540)) ([39330f4](vitejs/vite@39330f4))
- **optimizer:** resolve pending discovered dep processing on close before init ([#23567](vitejs/vite#23567)) ([5f89433](vitejs/vite@5f89433))
- **server:** avoid reinitializing watcher when adding file after server close ([#23572](vitejs/vite#23572)) ([6f831f9](vitejs/vite@6f831f9))
- **sourcemap:** skip URL source roots when injecting sources content ([#23519](vitejs/vite#23519)) ([04fc30a](vitejs/vite@04fc30a))

##### Miscellaneous Chores

- merge prereleases in changelog ([#23466](vitejs/vite#23466)) ([99bd9d1](vitejs/vite@99bd9d1))
- **optimizer:** add debug log when waiting for dep before init ([#23566](vitejs/vite#23566)) ([63567c7](vitejs/vite@63567c7))
- update `optimizeDeps.include` comment ([#23489](vitejs/vite#23489)) ([6a84c72](vitejs/vite@6a84c72))

##### Code Refactoring

- assets regexp use non-capture ([#23491](vitejs/vite#23491)) ([f4b4431](vitejs/vite@f4b4431))
- remove duplicate configurations ([#23532](vitejs/vite#23532)) ([9abd99b](vitejs/vite@9abd99b))
- replace `find` with `some` ([#23554](vitejs/vite#23554)) ([af7cdf6](vitejs/vite@af7cdf6))
renovate Bot added a commit to andrei-picus-tink/auto-renovate that referenced this pull request Oct 11, 2026
| datasource | package | from  | to    |
| ---------- | ------- | ----- | ----- |
| npm        | vite    | 8.3.0 | 8.3.4 |


## [v8.3.4](https://github.com/vitejs/vite/blob/HEAD/packages/vite/CHANGELOG.md#small-834-2026-10-08-small)

##### Features

- **bundled-dev:** support `import.meta.hot.acceptExports` ([#23463](vitejs/vite#23463)) ([bc0f21c](vitejs/vite@bc0f21c))

##### Bug Fixes

- avoid mutating hmr defaults (fix [#23575](vitejs/vite#23575)) ([#23576](vitejs/vite#23576)) ([574d5e3](vitejs/vite@574d5e3))
- **build:** correct preloads when chunkImportMap is enabled with non-root base ([#23698](vitejs/vite#23698)) ([2a8c0f0](vitejs/vite@2a8c0f0))
- **build:** wait for in-flight stylesheets in preload helper (fix [#23652](vitejs/vite#23652)) ([#23662](vitejs/vite#23662)) ([036b745](vitejs/vite@036b745))
- **bundled-dev:** serve `/@vite/client` and stub `@vite/env` ([#23664](vitejs/vite#23664)) ([5afc5a8](vitejs/vite@5afc5a8))
- **client:** skip rewriting unchanged adopted styles ([#23697](vitejs/vite#23697)) ([fa71469](vitejs/vite@fa71469))
- **css:** resolve imported preprocessors from their file path with lightningcss ([#23688](vitejs/vite#23688)) ([cf52011](vitejs/vite@cf52011))
- **deps:** update all non-major dependencies ([#23648](vitejs/vite#23648)) ([8a4c19c](vitejs/vite@8a4c19c))
- **deps:** update rolldown-related dependencies ([#23649](vitejs/vite#23649)) ([794516d](vitejs/vite@794516d))
- **dev:** a restart requested during a restart used to be dropped (fix [#23392](vitejs/vite#23392)) ([#23484](vitejs/vite#23484)) ([70d56ea](vitejs/vite@70d56ea))
- don't treat modules ending with js-like query as js ([#23687](vitejs/vite#23687)) ([fcb6f12](vitejs/vite@fcb6f12))
- **html:** avoid adding filesystem root to watcher ([#23689](vitejs/vite#23689)) ([3a7f2ae](vitejs/vite@3a7f2ae))
- **html:** skip caching CSS of chunks in a cycle (fix [#23628](vitejs/vite#23628)) ([#23636](vitejs/vite#23636)) ([15d82f7](vitejs/vite@15d82f7))
- **optimizer:** scan deep imports with custom extensions ([#23678](vitejs/vite#23678)) ([8579189](vitejs/vite@8579189))
- remove input option unescaping for now ([#23694](vitejs/vite#23694)) ([facc2fb](vitejs/vite@facc2fb))
- **server:** match static aliases on path boundaries ([#23643](vitejs/vite#23643)) ([b28db28](vitejs/vite@b28db28))
- **watcher:** normalize file before root check in `ensureWatchedFile` ([#23673](vitejs/vite#23673)) ([12bb28c](vitejs/vite@12bb28c))

##### Performance Improvements

- **module-runner:** skip cloning call sites that have no source map ([#23646](vitejs/vite#23646)) ([3d67486](vitejs/vite@3d67486))

##### Code Refactoring

- **bundled-dev:** import CSS HMR helpers from `/@vite/client` ([#23674](vitejs/vite#23674)) ([182f5b2](vitejs/vite@182f5b2))


## [v8.3.3](https://github.com/vitejs/vite/blob/HEAD/packages/vite/CHANGELOG.md#small-833-2026-10-06-small)

##### Bug Fixes

- **deps:** update launch-editor to v2.14.2 ([#23654](vitejs/vite#23654)) ([22fd1d5](vitejs/vite@22fd1d5))
- **html:** filename passed to transformIndexHtml should not include queries ([#23653](vitejs/vite#23653)) ([7dafd8e](vitejs/vite@7dafd8e))
- **server:** check `fs.serve` for `?vite-wasm-instance` ([#23655](vitejs/vite#23655)) ([ba8b7ab](vitejs/vite@ba8b7ab))
- **server:** store ids to `safeModulePaths` rather than URLs ([#23656](vitejs/vite#23656)) ([c3e06f9](vitejs/vite@c3e06f9))


## [v8.3.2](https://github.com/vitejs/vite/blob/HEAD/packages/vite/CHANGELOG.md#small-832-2026-10-01-small)

##### Bug Fixes

- **build:** preload CSS correctly when `renderBuiltUrl` returns URLs with queries ([#23611](vitejs/vite#23611)) ([64e0a21](vitejs/vite@64e0a21))
- **bundled-dev:** serve lazy chunk sourcemaps ([#23026](vitejs/vite#23026)) ([eb7aa9a](vitejs/vite@eb7aa9a))
- **bundled-dev:** serve the rolldown runtime from the installed rolldown ([#23568](vitejs/vite#23568)) ([bc598a6](vitejs/vite@bc598a6))
- **deps:** update all non-major dependencies ([#23601](vitejs/vite#23601)) ([9944fa6](vitejs/vite@9944fa6))
- **deps:** update rolldown-related dependencies ([#23602](vitejs/vite#23602)) ([88c1741](vitejs/vite@88c1741))
- **html:** resolve percent-encoded srcset urls ([#23609](vitejs/vite#23609)) ([53f1ce7](vitejs/vite@53f1ce7))
- limit size of object and array printing via `forwardConsole` ([#23565](vitejs/vite#23565)) ([e64a587](vitejs/vite@e64a587))
- merge `build.rolldownOptions.output.minify` correctly ([#23536](vitejs/vite#23536)) ([bba3bb8](vitejs/vite@bba3bb8))
- **optimize-deps:** avoid "unsupported" warnings for browser:false mappings ([#23590](vitejs/vite#23590)) ([5e4b9ca](vitejs/vite@5e4b9ca))
- **optimizer:** preserve excluded optional peer require fallbacks ([#23600](vitejs/vite#23600)) ([a2bd6fa](vitejs/vite@a2bd6fa))
- pass queries to `renderBuiltUrl` ([#23586](vitejs/vite#23586)) ([744269e](vitejs/vite@744269e))
- **server:** handle file watcher errors without crashing ([#23503](vitejs/vite#23503)) ([6894f5c](vitejs/vite@6894f5c))
- **server:** release previous environments after initialization ([#23499](vitejs/vite#23499)) ([5a3a010](vitejs/vite@5a3a010))
- **ssr:** encode whitespace in module runner sourceURL ([#23513](vitejs/vite#23513)) ([bbc8812](vitejs/vite@bbc8812))
- **worker:** align worker urls in client and server when using terser ([#23614](vitejs/vite#23614)) ([24bd331](vitejs/vite@24bd331))

##### Performance Improvements

- avoid encoding intermediate source maps ([#23461](vitejs/vite#23461)) ([89574f6](vitejs/vite@89574f6))
- **build:** avoid quadratic link scan in the preload helper ([#23510](vitejs/vite#23510)) ([cf5c028](vitejs/vite@cf5c028))
- only register time middleware when debug logging is enabled ([#23621](vitejs/vite#23621)) ([94d0080](vitejs/vite@94d0080))

##### Documentation

- fix dead og-image PNG links in vite6/vite7 changelog entries ([#23594](vitejs/vite#23594)) ([1929b4c](vitejs/vite@1929b4c))

##### Miscellaneous Chores

- **deps:** update vitest monorepo to v5 ([#23604](vitejs/vite#23604)) ([24339f4](vitejs/vite@24339f4))

##### Code Refactoring

- use `tinyexec` instead of `cross-spawn` ([#23583](vitejs/vite#23583)) ([db915e5](vitejs/vite@db915e5))

##### Tests

- **bundled-dev:** accept a rolldown dev runtime with no helper imports ([#23606](vitejs/vite#23606)) ([634745d](vitejs/vite@634745d))


## [v8.3.1](https://github.com/vitejs/vite/blob/HEAD/packages/vite/CHANGELOG.md#small-831-2026-09-24-small)

##### Bug Fixes

- **deps:** update all non-major dependencies ([#23482](vitejs/vite#23482)) ([3c752c8](vitejs/vite@3c752c8))
- **deps:** update all non-major dependencies ([#23537](vitejs/vite#23537)) ([e8990c4](vitejs/vite@e8990c4))
- **deps:** update rolldown-related dependencies ([#23483](vitejs/vite#23483)) ([9aecbbf](vitejs/vite@9aecbbf))
- handle `server.ws: false` in mergeConfig ([#23511](vitejs/vite#23511)) ([f68c0d5](vitejs/vite@f68c0d5))
- merge `build.rolldownOptions.output.comments` correctly ([#23514](vitejs/vite#23514)) ([4aba8d8](vitejs/vite@4aba8d8))
- **optimizer:** don't skip imports whose binding starts with type ([#23540](vitejs/vite#23540)) ([39330f4](vitejs/vite@39330f4))
- **optimizer:** resolve pending discovered dep processing on close before init ([#23567](vitejs/vite#23567)) ([5f89433](vitejs/vite@5f89433))
- **server:** avoid reinitializing watcher when adding file after server close ([#23572](vitejs/vite#23572)) ([6f831f9](vitejs/vite@6f831f9))
- **sourcemap:** skip URL source roots when injecting sources content ([#23519](vitejs/vite#23519)) ([04fc30a](vitejs/vite@04fc30a))

##### Miscellaneous Chores

- merge prereleases in changelog ([#23466](vitejs/vite#23466)) ([99bd9d1](vitejs/vite@99bd9d1))
- **optimizer:** add debug log when waiting for dep before init ([#23566](vitejs/vite#23566)) ([63567c7](vitejs/vite@63567c7))
- update `optimizeDeps.include` comment ([#23489](vitejs/vite#23489)) ([6a84c72](vitejs/vite@6a84c72))

##### Code Refactoring

- assets regexp use non-capture ([#23491](vitejs/vite#23491)) ([f4b4431](vitejs/vite@f4b4431))
- remove duplicate configurations ([#23532](vitejs/vite#23532)) ([9abd99b](vitejs/vite@9abd99b))
- replace `find` with `some` ([#23554](vitejs/vite#23554)) ([af7cdf6](vitejs/vite@af7cdf6))
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feat: build feat: css p3-minor-bug An edge case that only affects very specific usage (priority)

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Only the first import of an async chunk waits for the CSS

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