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perf: shrink wasm size by avoid importing browserslist #5204

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merged 1 commit into from Oct 15, 2023

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sapphi-red
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This PR contains:

  • bugfix
  • feature
  • refactor
  • documentation
  • other

Are tests included?

  • yes (bugfixes and features will not be merged without tests)
  • no

Breaking Changes?

  • yes (breaking changes will not be merged unless absolutely necessary)
  • no

List any relevant issue numbers:

Description

This PR reduces the wasm size by ~70% by avoid importing browserslist.

swc crate imports browserslist-rs indirectly and because browserslist-rs has #[wasm_bindgen]that function was exposed and the dependencies of that function was included in the wasm binary.

wasm: 5.20MB -> 1.54MB
node (windows): 3.32MB -> 3.31MB

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vercel bot commented Oct 15, 2023

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name Status Preview Comments Updated (UTC)
rollup ✅ Ready (Inspect) Visit Preview 💬 Add feedback Oct 15, 2023 8:16am

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codecov bot commented Oct 15, 2023

Codecov Report

Merging #5204 (552ea22) into master (ee0639e) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #5204   +/-   ##
=======================================
  Coverage   98.82%   98.82%           
=======================================
  Files         231      231           
  Lines        8849     8849           
  Branches     2314     2314           
=======================================
  Hits         8745     8745           
  Misses         43       43           
  Partials       61       61           

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@lukastaegert lukastaegert left a comment

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Amazing find, thanks a lot!

@lukastaegert lukastaegert added this pull request to the merge queue Oct 15, 2023
@github-merge-queue github-merge-queue bot removed this pull request from the merge queue due to failed status checks Oct 15, 2023
@lukastaegert lukastaegert added this pull request to the merge queue Oct 15, 2023
Merged via the queue into rollup:master with commit 51c974d Oct 15, 2023
27 checks passed
@sapphi-red sapphi-red deleted the trim-wasm branch October 16, 2023 01:49
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This PR has been released as part of rollup@4.1.4. You can test it via npm install rollup.

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2 participants