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feat: support import assertions #8937

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merged 1 commit into from
Jul 5, 2022

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bluwy
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@bluwy bluwy commented Jul 5, 2022

Description

Fix #4934

This basically strips off the import assertion part as Vite already handles it.

It's still a stage 3 feature, but esbuild, rollup, and other tools all already support it. Using import assertions in deps works today.

Additional context

I see some downsides if we don't strip it, and instead let browsers handle natively:

  1. Browser support isn't great yet
  2. We can't detect if a JSON import is using import assertions or not, so we have to mark it with a query, making the process a bit complex
  3. Native JSON import does not support named imports. It might be confusing that it doesn't work by default in Vite.

What is the purpose of this pull request?

  • Bug fix
  • New Feature
  • Documentation update
  • Other

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  • Read the Contributing Guidelines.
  • Read the Pull Request Guidelines and follow the Commit Convention.
  • Check that there isn't already a PR that solves the problem the same way to avoid creating a duplicate.
  • Provide a description in this PR that addresses what the PR is solving, or reference the issue that it solves (e.g. fixes #123).
  • Ideally, include relevant tests that fail without this PR but pass with it.

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@bluwy bluwy added the p3-significant High priority enhancement (priority) label Jul 5, 2022
@bluwy bluwy mentioned this pull request Jul 5, 2022
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Sweet! I agree that this is a good step forward. We may want later to document this, and once the support is more extended re-evaluate what is the best to avoid stripping them.

@patak-dev patak-dev merged commit 2390422 into vitejs:main Jul 5, 2022
@bluwy bluwy deleted the feat-support-import-assertions branch July 5, 2022 18:37
@ben ben mentioned this pull request Jul 9, 2022
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Support Import Assertions
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