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fix(import-analysis): preserve importedUrls import order#14465

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patak-dev merged 1 commit intomainfrom
fix-mod-imported-urls-order
Sep 26, 2023
Merged

fix(import-analysis): preserve importedUrls import order#14465
patak-dev merged 1 commit intomainfrom
fix-mod-imported-urls-order

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@bluwy
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@bluwy bluwy commented Sep 25, 2023

Description

Fix withastro/astro#8044

In import analysis, we're transforming the imports populate importedUrls in parallel, causing it to be non-deterministic. This affects frameworks that crawl the module graph for CSS to populate the HTML to prevent FOUC, e.g. SvelteKit and Astro (afaia), causing the CSS order to be incorrect.

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What is the purpose of this pull request?

  • Bug fix
  • New Feature
  • Documentation update
  • Other

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@bluwy bluwy added the p3-downstream-blocker Blocking the downstream ecosystem to work properly (priority) label Sep 25, 2023
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@Dunqing
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Dunqing commented Sep 25, 2023

I've looked into this before. I thought it was intentional.

@bluwy
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bluwy commented Sep 25, 2023

It was deterministic before #12754 so very likely unintentional here 😬 Though there is a point that Set shouldn't exactly be ordered, but I think it makes sense to ensure that as there's a usecase for it.

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Tailwind added after my style block clearing all styles

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