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[16.3.x] Stop generating error codes - #97780

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eps1lon merged 1 commit into
next-16-3from
sebbie/backport-97687-to-next-16-3
Aug 24, 2026
Merged

[16.3.x] Stop generating error codes#97780
eps1lon merged 1 commit into
next-16-3from
sebbie/backport-97687-to-next-16-3

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@eps1lon

@eps1lon eps1lon commented Aug 24, 2026 •
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Backports #97687 without the UI changes i.e. the UI stays intact to reduce blast radius.
That way backport PRs don't have to deal with generating error codes which would've complicated backports.

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Stats from current PR

🔴 4 regressions

Metric Canary PR Change Trend
node_modules Size 553 MB 553 MB 🔴 +217 kB (+0%) █████
Turbo Build Time 5.902s 6.255s 🔴 +353ms (+6%) ▁▁▄▄▁
Turbo Build Time (cached) 2.931s 3.233s 🔴 +302ms (+10%) ▁▁▃▄▁
Warm (First Request) 1.266s 1.370s 🔴 +104ms (+8%) ▅▂▅▆▁
📊 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) 813ms 813ms ✓ ▁▁▁▁▁
Cold (Ready in log) 807ms 817ms ✓ ▂▂▃▃▁
Cold (First Request) 1.288s 1.384s ✓ ▂▁▃▄▁
Warm (Listen) 814ms 813ms ✓ ▁▁▁▁▁
Warm (Ready in log) 803ms 810ms ✓ ▃▂▄▄▁
Warm (First Request) 1.266s 1.370s 🔴 +104ms (+8%) ▅▂▅▆▁
📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric Canary PR Change Trend
Cold (Listen) 814ms 814ms ✓ ▄▁▅▅▅
Cold (Ready in log) 811ms 800ms ✓ ▂▁▅▄▅
Cold (First Request) 3.433s 3.458s ✓ ▃▁▄▂▄
Warm (Listen) 815ms 812ms ✓ ▅▁▅▅▅
Warm (Ready in log) 821ms 789ms ✓ ▃▁▆▄▆
Warm (First Request) 3.473s 3.380s ✓ ▃▁▄▂▇

⚡ Production Builds

Metric Canary PR Change Trend
Fresh Build 5.902s 6.255s 🔴 +353ms (+6%) ▁▁▄▄▁
Cached Build 2.931s 3.233s 🔴 +302ms (+10%) ▁▁▃▄▁
📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric Canary PR Change Trend
Fresh Build 24.308s 24.673s ✓ ▃▁▇▄█
Cached Build 25.085s 25.058s ✓ ▁▁▆▄▅
node_modules Size 553 MB 553 MB 🔴 +217 kB (+0%) █████
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Build Cache
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00000002.sst gzip 13.9 MB 11.2 MB 🟢 2.72 MB (-20%)
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Polyfills
Canary PR Change
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Pages
Canary PR Change
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Server

Edge SSR
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🔄 Shared (bundler-independent)

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📝 Changed Files (33 files)

Files with changes:

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  • app-page-exp..time.prod.js
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  • app-page-tur..time.prod.js
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  • dev-validati..ntime.dev.js
  • dev-validati..ntime.dev.js
  • dev-validati..ntime.dev.js
  • ... and 13 more
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📎 Tarball URL 
https://vercel-packages.vercel.app/next/commits/552703694665f04b92cf1897715f743067a82547/next

Commit: 5527036

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Tests Passed

Commit: 5527036

@eps1lon
eps1lon force-pushed the sebbie/backport-97687-to-next-16-3 branch from 4beff9f to 2529cf0 Compare August 24, 2026 10:14
@eps1lon eps1lon changed the title [16.3.x] Remove generated error codes [16.3.x] Stop generating error codes Aug 24, 2026
@eps1lon
eps1lon force-pushed the sebbie/backport-97687-to-next-16-3 branch from 2529cf0 to f2a0397 Compare August 24, 2026 10:30
@eps1lon
eps1lon force-pushed the sebbie/backport-97687-to-next-16-3 branch from f2a0397 to 5527036 Compare August 24, 2026 12:05
@eps1lon
eps1lon requested a review from devjiwonchoi August 24, 2026 12:12
@eps1lon
eps1lon marked this pull request as ready for review August 24, 2026 12:12
@eps1lon
eps1lon enabled auto-merge (squash) August 24, 2026 12:18
@eps1lon
eps1lon merged commit 528c1cd into next-16-3 Aug 24, 2026
116 checks passed
@eps1lon
eps1lon deleted the sebbie/backport-97687-to-next-16-3 branch August 24, 2026 12:56
@github-actions github-actions Bot added the locked label Sep 8, 2026
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