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fix(plugin-legacy): prevent failed to load module #8285

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merged 2 commits into from
May 23, 2022

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Description

#7644 changed legacy detection code to try{import(new URL(import.meta.url).href).catch(()=>1);}catch(e){}window.${detectModernBrowserVarName}=true;.
When import.meta and dynamic import is supported, a fetch to current location which normally returns html will be executed.
That fetch occurs Failed to load module script: Expected a JavaScript module script but the server responded with a MIME type of "text/html". Strict MIME type checking is enforced for module scripts per HTML spec. error.

Note that import('_') does not show any error. I'm not sure but maybe because _ is not a valid url.

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What is the purpose of this pull request?

  • Bug fix
  • New Feature
  • Documentation update
  • Other

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

  • 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.

@sapphi-red sapphi-red added plugin: legacy p2-nice-to-have Not breaking anything but nice to have (priority) labels May 23, 2022
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@patak-dev patak-dev left a comment

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Oh, good one!

@patak-dev patak-dev enabled auto-merge (squash) May 23, 2022 06:36
@patak-dev patak-dev merged commit d671811 into vitejs:main May 23, 2022
@sapphi-red sapphi-red deleted the fix/legacy-import-html-error branch May 23, 2022 07:08
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2 participants