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webpack: fix swcPlugins with relative paths#92770

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mischnic merged 3 commits into
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mischnic/fix-webpack-swc-plugins-relative
Apr 15, 2026
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webpack: fix swcPlugins with relative paths#92770
mischnic merged 3 commits into
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mischnic/fix-webpack-swc-plugins-relative

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@mischnic mischnic commented Apr 14, 2026 •
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Webpack didn't correctly load relative paths for swcPlugins.

#92579 will add a test

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mischnic commented Apr 14, 2026 •
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@mischnic mischnic marked this pull request as ready for review April 14, 2026 08:46
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Stats from current PR

✅ No significant changes detected

📊 All Metrics
📖 Metrics Glossary

Dev Server Metrics:

  • Listen = TCP port starts accepting connections
  • First Request = HTTP server returns successful response
  • Cold = Fresh build (no cache)
  • Warm = With cached build artifacts

Build Metrics:

  • Fresh = Clean build (no .next directory)
  • Cached = With existing .next directory

Change Thresholds:

  • Time: Changes < 50ms AND < 10%, OR < 2% are insignificant
  • Size: Changes < 1KB AND < 1% are insignificant
  • All other changes are flagged to catch regressions

⚡ Dev Server

Metric Canary PR Change Trend
Cold (Listen) 455ms 455ms ✓ ▁▁█▁▁
Cold (Ready in log) 441ms 442ms ✓ ▂▁▅▁▂
Cold (First Request) 1.149s 1.123s ✓ ▁▇▂██
Warm (Listen) 456ms 456ms ✓ ▅▅▅██
Warm (Ready in log) 443ms 441ms ✓ ▂▃▅▃▃
Warm (First Request) 340ms 342ms ✓ ▂▁▅▂▂
📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric Canary PR Change Trend
Cold (Listen) 455ms 455ms ✓ ▅▅▅▁█
Cold (Ready in log) 437ms 437ms ✓ ▁▃▂▂█
Cold (First Request) 1.940s 1.927s ✓ ▁▄▃▁█
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Warm (Ready in log) 437ms 437ms ✓ ▁▃▂▂█
Warm (First Request) 1.941s 1.981s ✓ ▁▄▄▂█

⚡ Production Builds

Metric Canary PR Change Trend
Fresh Build 3.890s 3.998s ✓ ▃▁█▂▂
Cached Build 3.916s 3.875s ✓ ▂▂▇▂▂
📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric Canary PR Change Trend
Fresh Build 14.612s 14.371s ✓ ▂▃▃▂█
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📎 Tarball URL 
https://vercel-packages.vercel.app/next/commits/fe6d57be4f905dff61ae5cd80e686476f7b6ba2e/next

lukesandberg
lukesandberg approved these changes Apr 14, 2026
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Can we centralize this logic either in a helper function or as part of building NextConfigComplete?

@mischnic mischnic force-pushed the mischnic/fix-webpack-swc-plugins-relative branch 2 times, most recently from 415c9a8 to 3773c9b Compare April 15, 2026 09:10
@mischnic mischnic force-pushed the mischnic/fix-webpack-swc-plugins-relative branch from 3773c9b to 1d41e4b Compare April 15, 2026 09:21
@mischnic mischnic merged commit 56e5acc into canary Apr 15, 2026
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mischnic commented Apr 15, 2026

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@mischnic mischnic deleted the mischnic/fix-webpack-swc-plugins-relative branch April 15, 2026 10:04
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