Invalidate dev CSS map when routes change#15873
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Regenerate the dev route-to-CSS map after route rebuilds so newly created pages in dev include layout-imported styles without requiring a server restart.
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ematipico
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Mar 12, 2026
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This PR contains the following updates: | Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) | |---|---|---|---| | [astro](https://astro.build) ([source](https://github.com/withastro/astro/tree/HEAD/packages/astro)) | [`6.0.3` → `6.0.4`](https://renovatebot.com/diffs/npm/astro/6.0.3/6.0.4) |  |  | --- ### Release Notes <details> <summary>withastro/astro (astro)</summary> ### [`v6.0.4`](https://github.com/withastro/astro/blob/HEAD/packages/astro/CHANGELOG.md#604) [Compare Source](https://github.com/withastro/astro/compare/astro@6.0.3...astro@6.0.4) ##### Patch Changes - [#​15870](withastro/astro#15870) [`920f10b`](withastro/astro@920f10b) Thanks [@​matthewp](https://github.com/matthewp)! - Prebundle `astro/toolbar` in dev when custom dev toolbar apps are registered, preventing re-optimization reloads that can hide or break the toolbar. - [#​15876](withastro/astro#15876) [`f47ac53`](withastro/astro@f47ac53) Thanks [@​ematipico](https://github.com/ematipico)! - Fixes `redirectToDefaultLocale` producing a protocol-relative URL (`//locale`) instead of an absolute path (`/locale`) when `base` is `'/'`. - [#​15767](withastro/astro#15767) [`e0042f7`](withastro/astro@e0042f7) Thanks [@​matthewp](https://github.com/matthewp)! - Fixes server islands (`server:defer`) not working when only used in prerendered pages with `output: 'server'`. - [#​15873](withastro/astro#15873) [`35841ed`](withastro/astro@35841ed) Thanks [@​matthewp](https://github.com/matthewp)! - Fix a dev server bug where newly created pages could miss layout-imported CSS until restart. - [#​15874](withastro/astro#15874) [`ce0669d`](withastro/astro@ce0669d) Thanks [@​ematipico](https://github.com/ematipico)! - Fixes a warning when using `prefetchAll` - [#​15754](withastro/astro#15754) [`58f1d63`](withastro/astro@58f1d63) Thanks [@​rururux](https://github.com/rururux)! - Fixes a bug where a directory at the project root sharing the same name as a page route would cause the dev server to return a 404 instead of serving the page. - [#​15869](withastro/astro#15869) [`76b3a5e`](withastro/astro@76b3a5e) Thanks [@​matthewp](https://github.com/matthewp)! - Update the unknown file extension error hint to recommend `vite.resolve.noExternal`, which is the correct Vite 7 config key. </details> --- ### Configuration 📅 **Schedule**: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Disabled by config. Please merge this manually once you are satisfied. ♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0My41OS41IiwidXBkYXRlZEluVmVyIjoiNDMuNTkuNSIsInRhcmdldEJyYW5jaCI6Im1haW4iLCJsYWJlbHMiOltdfQ==--> Co-authored-by: Renovate Bot <renovate@zarantonello.dev> Co-committed-by: Renovate Bot <renovate@zarantonello.dev>
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Changes
virtual:astro:dev-css-allwhen routes are rebuilt so the route-to-CSS map is regenerated.Testing
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