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Upgrade React from 41b3e9a6-20260119 to d2908752-20260119 #88774

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Merged
sebmarkbage merged 6 commits into from
Jan 20, 2026
Merged

Upgrade React from 41b3e9a6-20260119 to d2908752-20260119 #88774

sebmarkbage merged 6 commits into from
Jan 20, 2026
+3,286 −2,644

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@nextjs-bot nextjs-bot commented Jan 20, 2026

@nextjs-bot nextjs-bot requested a review from eps1lon January 20, 2026 02:14
@sebmarkbage sebmarkbage enabled auto-merge (squash) January 20, 2026 02:14
@sebmarkbage sebmarkbage merged commit 9e33529 into canary Jan 20, 2026
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@sebmarkbage sebmarkbage deleted the update/react/19.3.0-canary-d2908752-20260119 branch January 20, 2026 02:30
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nextjs-bot commented Jan 20, 2026

Stats from current PR

🔴 1 regression

Metric Canary PR Change Trend
node_modules Size 459 MB 459 MB 🔴 +47.4 kB (+0%) █████
📊 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 456ms ✓ ▅█▁▁▁
Cold (Ready in log) 439ms 439ms ✓ ▆▁███
Cold (First Request) 1.215s 1.221s ✓ █▁███
Warm (Listen) 456ms 457ms ✓ ▅▅▅▁▅
Warm (Ready in log) 444ms 445ms ✓ ▁█▂▁▂
Warm (First Request) 344ms 342ms ✓ ▇▆▁▁█
📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric Canary PR Change Trend
Cold (Listen) 456ms 456ms ✓ ▁█▁▁▁
Cold (Ready in log) 440ms 439ms ✓ ▁█▂▁▅
Cold (First Request) 1.817s 1.820s ✓ ▁█▁▂█
Warm (Listen) 455ms 456ms ✓ ▁█▁▁▁
Warm (Ready in log) 440ms 439ms ✓ ▂█▁▁▅
Warm (First Request) 1.847s 1.824s ✓ ▂█▁▂█

⚡ Production Builds

Metric Canary PR Change Trend
Fresh Build 4.377s 4.412s ✓ ▁▄▁▁▂
Cached Build 4.428s 4.347s ✓ ▁▅▁▂▁
📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric Canary PR Change Trend
Fresh Build 14.119s 14.090s ✓ ▁▇▁▁▆
Cached Build 14.171s 14.170s ✓ ▁▇▁▁▅
node_modules Size 459 MB 459 MB 🔴 +47.4 kB (+0%) █████
📦 Bundle Sizes

Bundle Sizes

⚡ Turbopack

Client

Main Bundles: **430 kB** → **430 kB** ✅ -60 B

82 files with content-based hashes (individual files not comparable between builds)

Server

Middleware
Canary PR Change
middleware-b..fest.js gzip 762 B 765 B ✓
Total 762 B 765 B ⚠️ +3 B
Build Details
Build Manifests
Canary PR Change
_buildManifest.js gzip 451 B 451 B ✓
Total 451 B 451 B ✓

📦 Webpack

Client

Main Bundles
Canary PR Change
2086.HASH.js gzip 169 B N/A -
2161-HASH.js gzip 5.41 kB N/A -
2747-HASH.js gzip 4.48 kB N/A -
4322-HASH.js gzip 52.3 kB N/A -
ec793fe8-HASH.js gzip 62.3 kB N/A -
framework-HASH.js gzip 59.8 kB 59.8 kB ✓
main-app-HASH.js gzip 251 B 253 B ✓
main-HASH.js gzip 38.6 kB 39 kB ✓
webpack-HASH.js gzip 1.68 kB 1.68 kB ✓
1596.HASH.js gzip N/A 169 B -
2658-HASH.js gzip N/A 51.9 kB -
6349-HASH.js gzip N/A 4.46 kB -
7019-HASH.js gzip N/A 5.43 kB -
b17a3386-HASH.js gzip N/A 62.3 kB -
Total 225 kB 225 kB ⚠️ +27 B
Polyfills
Canary PR Change
polyfills-HASH.js gzip 39.4 kB 39.4 kB ✓
Total 39.4 kB 39.4 kB ✓
Pages
Canary PR Change
_app-HASH.js gzip 194 B 193 B ✓
_error-HASH.js gzip 182 B 182 B ✓
css-HASH.js gzip 336 B 335 B ✓
dynamic-HASH.js gzip 1.8 kB 1.8 kB ✓
edge-ssr-HASH.js gzip 256 B 256 B ✓
head-HASH.js gzip 352 B 349 B ✓
hooks-HASH.js gzip 385 B 384 B ✓
image-HASH.js gzip 580 B 580 B ✓
index-HASH.js gzip 259 B 258 B ✓
link-HASH.js gzip 2.5 kB 2.51 kB ✓
routerDirect..HASH.js gzip 319 B 317 B ✓
script-HASH.js gzip 385 B 387 B ✓
withRouter-HASH.js gzip 316 B 315 B ✓
1afbb74e6ecf..834.css gzip 106 B 106 B ✓
Total 7.97 kB 7.96 kB ✅ -8 B

Server

Edge SSR
Canary PR Change
edge-ssr.js gzip 125 kB 125 kB ✓
page.js gzip 243 kB 238 kB 🟢 4.81 kB (-2%)
Total 368 kB 363 kB ✅ -4.8 kB
Middleware
Canary PR Change
middleware-b..fest.js gzip 617 B 617 B ✓
middleware-r..fest.js gzip 155 B 156 B ✓
middleware.js gzip 33 kB 33.3 kB ✓
edge-runtime..pack.js gzip 842 B 842 B ✓
Total 34.6 kB 34.9 kB ⚠️ +287 B
Build Details
Build Manifests
Canary PR Change
_buildManifest.js gzip 738 B 738 B ✓
Total 738 B 738 B ✓
Build Cache
Canary PR Change
0.pack gzip 3.66 MB 3.67 MB 🔴 +8.27 kB (+0%)
index.pack gzip 100 kB 99.4 kB ✓
index.pack.old gzip 99.1 kB 99.4 kB ✓
Total 3.86 MB 3.87 MB ⚠️ +7.72 kB

🔄 Shared (bundler-independent)

Runtimes
Canary PR Change
app-page-exp...dev.js gzip 304 kB 304 kB ✓
app-page-exp..prod.js gzip 158 kB 158 kB ✓
app-page-tur...dev.js gzip 304 kB 304 kB ✓
app-page-tur..prod.js gzip 158 kB 158 kB ✓
app-page-tur...dev.js gzip 301 kB 301 kB ✓
app-page-tur..prod.js gzip 156 kB 156 kB ✓
app-page.run...dev.js gzip 301 kB 301 kB ✓
app-page.run..prod.js gzip 156 kB 156 kB ✓
app-route-ex...dev.js gzip 68.8 kB 68.8 kB ✓
app-route-ex..prod.js gzip 47.6 kB 47.6 kB ✓
app-route-tu...dev.js gzip 68.8 kB 68.8 kB ✓
app-route-tu..prod.js gzip 47.6 kB 47.6 kB ✓
app-route-tu...dev.js gzip 68.4 kB 68.4 kB ✓
app-route-tu..prod.js gzip 47.4 kB 47.4 kB ✓
app-route.ru...dev.js gzip 68.4 kB 68.4 kB ✓
app-route.ru..prod.js gzip 47.4 kB 47.4 kB ✓
dist_client_...dev.js gzip 324 B 324 B ✓
dist_client_...dev.js gzip 326 B 326 B ✓
dist_client_...dev.js gzip 318 B 318 B ✓
dist_client_...dev.js gzip 317 B 317 B ✓
pages-api-tu...dev.js gzip 41.2 kB 41.2 kB ✓
pages-api-tu..prod.js gzip 31.3 kB 31.3 kB ✓
pages-api.ru...dev.js gzip 41.1 kB 41.1 kB ✓
pages-api.ru..prod.js gzip 31.2 kB 31.2 kB ✓
pages-turbo....dev.js gzip 50.8 kB 50.8 kB ✓
pages-turbo...prod.js gzip 38.2 kB 38.2 kB ✓
pages.runtim...dev.js gzip 50.7 kB 50.7 kB ✓
pages.runtim..prod.js gzip 38.2 kB 38.2 kB ✓
server.runti..prod.js gzip 62.2 kB 62.2 kB ✓
Total 2.69 MB 2.69 MB ⚠️ +36 B
📝 Changed Files (7 files)

Files with changes:

  • app-page-exp..ntime.dev.js
  • app-page-tur..ntime.dev.js
  • app-page-tur..ntime.dev.js
  • app-page.runtime.dev.js
  • app-route-ex..time.prod.js
  • app-route-tu..time.prod.js
  • server.runtime.prod.js
View diffs
app-page-exp..ntime.dev.js 
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app-page-tur..ntime.dev.js 
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app-page-tur..ntime.dev.js 
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app-page.runtime.dev.js 
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app-route-ex..time.prod.js

Diff too large to display

app-route-tu..time.prod.js

Diff too large to display

server.runtime.prod.js

Diff too large to display

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