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perf: parallelize imports processing in import analysis plugin #12754

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patak-dev
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Description

Implement @sapphi-red's idea

I'm not seeing a perf improvement on Sapphi's test, but I think we should be able to find examples where this makes a difference.


What is the purpose of this pull request?

  • Bug fix
  • New Feature
  • Documentation update
  • Other

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stackblitz bot commented Apr 5, 2023

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Comment on lines +692 to +693
const acceptedUrls = mergeAcceptedUrls(orderedAcceptedUrls)
const acceptedExports = mergeAcceptedUrls(orderedAcceptedExports)
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Merged after the Promise.all so these arrays are always ordered in the same way for each file. This isn't strictly needed but should help when debugging.

@patak-dev patak-dev added the performance Performance related enhancement label Apr 5, 2023
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sun0day commented Apr 5, 2023

I'm not seeing a perf improvement on Sapphi's test, but I think we should be able to find examples where this makes a difference.

The maximum number of import statements in each file of sapphi's repo is 3-4, I think that's why. Double it, maybe it will make a difference.

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For a file with many imports, I can see a small speed improvement of 21ms -> 19ms. And generally for other files, I can see a tiny reduction too. LGTM 👍

Note: speed tracked from debug logs for the import-analysis transform

@patak-dev patak-dev merged commit 037a6c7 into main Apr 6, 2023
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@patak-dev patak-dev deleted the perf/parallelize-imports-processing-in-import-analysis-plugin branch April 6, 2023 06:43
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3 participants