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Changes

  • Previously this worked by patching config.createResolver. That no longer works as Vite has deprecated this API and made it only work as legacy for the ssr and client environments. Our prerender environment therefore doesn't work.
  • Changed it to instead use resolve.alias and provide a custom resolver for each of these. This seems to work well.
  • We won't be able to support resolving to src/ when no alias is provided. But this is not something people use much anyways.

Testing

  • The current tests all fail with the exception of alias-tsconfig-baseurl-only.test.js
  • alias-tsconfig-baseurl-only.test.js can't be fixed because it does not require a matching pattern, something you can't do with resolve.alias.

Docs

N/A, bug fix

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changeset-bot bot commented Nov 20, 2025

⚠️ No Changeset found

Latest commit: 4454e29

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@github-actions github-actions bot added the pkg: astro Related to the core `astro` package (scope) label Nov 20, 2025
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ℹ tests 2000
ℹ suites 769
ℹ pass 1907
ℹ fail 51
ℹ cancelled 33
ℹ skipped 9
ℹ todo 0
ℹ duration_ms 1027062.193938

@matthewp matthewp marked this pull request as ready for review November 21, 2025 13:01
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@ematipico ematipico left a comment

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I have zero knowledge about this alias thing, so take my review with a grain of salt. It would be useful if we could add a reference to these APIs. I left some comments where it would be useful to add more descriptive information

@matthewp matthewp merged commit 96fdb52 into feat/environment-api Nov 21, 2025
9 of 21 checks passed
@matthewp matthewp deleted the tests/env-config-alias branch November 21, 2025 13:43
ematipico added a commit that referenced this pull request Dec 4, 2025
Co-authored-by: Emanuele Stoppa <[email protected]>
Co-authored-by: Samuel Macleod <[email protected]>
Co-authored-by: Alexander Niebuhr <[email protected]>
Co-authored-by: ascorbic <[email protected]>
Co-authored-by: matthewp <[email protected]>
Co-authored-by: Florian Lefebvre <[email protected]>
Co-authored-by: Matt Kane <[email protected]>
Co-authored-by: florian-lefebvre <[email protected]>
Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: Copilot <[email protected]>
Co-authored-by: Matthew Phillips <[email protected]>
Co-authored-by:  Matthew Phillips <[email protected]>
Co-authored-by: Sarah Rainsberger <[email protected]>
Co-authored-by: Erika <[email protected]>
Co-authored-by: Hayato Hasegawa <[email protected]>
fix: creation of routes list in build (#14325)
Fix unit tests for environment API (#14394)
fixture (#14599)
fix: organize imports and formatting in cloudflare handler (#14697)
fix: resolve environment-api build issues for client & CSS (#14770)
Fixes CSS when both static/client styles exist (#14790)
fix: flag `serverLike` incorrectly computed (#14792)
fix: redirects and i18n routing (#14797)
fix: logger level and static paths params (#14799)
Fix image tests crashing (#14803)
fix(environment): Error overlay not working (#14816)
fix: hashing of chunks (#14811)
Fix before-hydration script emission for environment-api (#14818)
fix: node leak into content collections (#14820)
fix: avoid `node:path` (#14827)
Fix API route tests (#14825)
Fix unit tests (#14832)
fix: server islands build (#14830)
Fix astro-component-bundling tests (#14840)
Fix astro-component-bundling tests (#14837)
Fix config alias by using resolve.alias config (#14828)
fix: container and routing tests (#14852)
fix: respect user vite config on sourcemaps (#14847)
fix: remove useless tests (#14854)
Fixes assetQueryParams and public folder tests (#14853)
fix: renderError fallback (#14855)
Fix server-islands data being used across tests (#14857)
fix: incorrect configuration in tests (#14858)
Fixes for tests in environment branch (#14865)
Fixes for e2e tests in environment branch (#14870)
fix(test): svelte async rendering (#14886)
fix(cloudflare/vercel/netlify): some tests pass and excluded others (#14892)
Fixes for node integrations tests (#14900)
Fix @astrojs/db tests (#14899)
fix(environment): Prevent Vite from interpreting injected sourcemap comments as actual sourcemaps (#14921)
Fix remaining cloudflare tests (#14912)
fix(vite): import mergeConfig from direct file to avoid dynamic import being processed by Vite (#14939)
Fix astro:env tests in Cloudflare (#14925)
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3 participants