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Revert "[turbopack] Track re-exports in import_usage inside of compute_import_usage" - #96311

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Revert "[turbopack] Track re-exports in import_usage inside of compute_import_usage"#96311
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revert-95989-sp/turbopack/track-reexports

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Reverts #95989

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Stats from current PR

🔴 1 regression, 1 improvement

Metric Canary PR Change Trend
Turbo Build Time 5.227s 5.744s 🔴 +517ms (+10%) ▂▃▁▂▁
Webpack Build Time 25.380s 24.072s 🟢 1.308s (-5%) ▄▇▆█▂
📊 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) 814ms 814ms ✓ ▂▂▁▂▂
Cold (Ready in log) 808ms 809ms ✓ ▁▂▁▁▁
Cold (First Request) 1.369s 1.382s ✓ ▂▂▁▁▁
Warm (Listen) 814ms 813ms ✓ ▂▂▁▂▁
Warm (Ready in log) 803ms 796ms ✓ ▁▁▁▂▁
Warm (First Request) 1.355s 1.356s ✓ ▁▁▁▂▁
📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric Canary PR Change Trend
Cold (Listen) 813ms 812ms ✓ ▁▅▅▅▁
Cold (Ready in log) 781ms 779ms ✓ ▁▂▃▃▁
Cold (First Request) 3.464s 3.419s ✓ ▁▂▃▃▁
Warm (Listen) 813ms 813ms ✓ ████▁
Warm (Ready in log) 777ms 783ms ✓ ▄▃▆▂▁
Warm (First Request) 3.507s 3.443s ✓ ▁▂▅▃▁

⚡ Production Builds

Metric Canary PR Change Trend
Fresh Build 5.227s 5.744s 🔴 +517ms (+10%) ▂▃▁▂▁
Cached Build 5.874s 5.891s ✓ ▂▄▁▂▁
📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric Canary PR Change Trend
Fresh Build 25.380s 24.072s 🟢 1.308s (-5%) ▄▇▆█▂
Cached Build 24.900s 24.508s ✓ ▁▃▅▃▁
node_modules Size 550 MB 550 MB ✓ █████
📦 Bundle Sizes

Bundle Sizes

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Client

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Canary PR Change
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Server

Middleware
Canary PR Change
middleware-b..fest.js gzip 775 B 775 B ✓
Total 775 B 775 B ✓
Build Details
Build Manifests
Canary PR Change
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Total 432 B 436 B ⚠️ +4 B

📦 Webpack

Client

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Canary PR Change
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Total 240 kB 241 kB ⚠️ +666 B
Polyfills
Canary PR Change
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Total 39.4 kB 39.4 kB ✓
Pages
Canary PR Change
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Total 7.95 kB 7.95 kB ⚠️ +1 B

Server

Edge SSR
Canary PR Change
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page.js gzip 292 kB 293 kB ✓
Total 421 kB 421 kB ⚠️ +303 B
Middleware
Canary PR Change
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Total 47.1 kB 47.2 kB ⚠️ +10 B
Build Details
Build Manifests
Canary PR Change
_buildManifest.js gzip 718 B 718 B ✓
Total 718 B 718 B ✓
Build Cache
Canary PR Change
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Total 5.07 MB 5.07 MB ✅ -2.77 kB

🔄 Shared (bundler-independent)

Runtimes
Canary PR Change
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dev-validati...dev.js gzip 130 kB 130 kB ✓
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📎 Tarball URL 
https://vercel-packages.vercel.app/next/commits/a6215297fbd9bd9444577c84c45be554fb41cd44/next

Commit: a621529

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Tests Passed

Commit: a621529

@sampoder
sampoder enabled auto-merge (squash) July 28, 2026 20:05
@sampoder
sampoder merged commit 625dccb into canary Jul 28, 2026
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@sampoder
sampoder deleted the revert-95989-sp/turbopack/track-reexports branch July 28, 2026 20:29
@sampoder sampoder mentioned this pull request Jul 28, 2026
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sampoder added a commit that referenced this pull request Jul 28, 2026
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Revert "Revert "[turbopack] Track re-exports in import_usage inside…
b89bbd8 
… of `compute_import_usage`"" (#96315)

Reverts #96311
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