Upgrade React from `65eec428-20251218` to `d6cae440-20260106` #88231

nextjs-bot · 2026-01-07T16:24:49Z

diff facebook/react@65eec428...d6cae440

React upstream changes

[ci] Add size-balanced test sequencer for better shard distribution facebook/react#35458
[ci] Increase DevTools test shards and bump timeout facebook/react#35459
[ci] Separate DevTools test-build into dedicated job with fewer shards facebook/react#35457

nextjs-bot · 2026-01-07T16:31:59Z

Failing test suites

Commit: 1cb0418 | About building and testing Next.js

pnpm test-dev test/e2e/app-dir/interception-dynamic-segment/interception-dynamic-segment.test.ts (job)

interception-dynamic-segment > should work when interception route is paired with a dynamic segment (DD)
interception-dynamic-segment > should intercept consistently with back/forward navigation (DD)
interception-dynamic-segment > should intercept multiple times from root (DD)

Expand output

● interception-dynamic-segment › should work when interception route is paired with a dynamic segment

expect(received).toContain(expected) // indexOf

Expected substring: "intercepted"
Received string:    "MODAL SLOT:
catch-all"

  70 |
  71 |     await retry(async () => {
> 72 |       expect(await browser.elementById('modal').text()).toContain('intercepted')
     |                                                         ^
  73 |     })
  74 |
  75 |     await browser.refresh()

  at toContain (e2e/app-dir/interception-dynamic-segment/interception-dynamic-segment.test.ts:72:57)
  at retry (lib/next-test-utils.ts:797:14)
  at Object.<anonymous> (e2e/app-dir/interception-dynamic-segment/interception-dynamic-segment.test.ts:71:5)

● interception-dynamic-segment › should intercept consistently with back/forward navigation

expect(received).toContain(expected) // indexOf

Expected substring: "intercepted"
Received string:    "MODAL SLOT:
catch-all"

   95 |
   96 |     await retry(async () => {
>  97 |       expect(await browser.elementById('modal').text()).toContain('intercepted')
      |                                                         ^
   98 |     })
   99 |
  100 |     // Go back to root

  at toContain (e2e/app-dir/interception-dynamic-segment/interception-dynamic-segment.test.ts:97:57)
  at retry (lib/next-test-utils.ts:797:14)
  at Object.<anonymous> (e2e/app-dir/interception-dynamic-segment/interception-dynamic-segment.test.ts:96:5)

● interception-dynamic-segment › should intercept multiple times from root

expect(received).toContain(expected) // indexOf

Expected substring: "intercepted"
Received string:    "MODAL SLOT:
catch-all"

  125 |
  126 |       await retry(async () => {
> 127 |         expect(await browser.elementById('modal').text()).toContain(
      |                                                           ^
  128 |           'intercepted'
  129 |         )
  130 |       })

  at toContain (e2e/app-dir/interception-dynamic-segment/interception-dynamic-segment.test.ts:127:59)
  at retry (lib/next-test-utils.ts:797:14)
  at Object.<anonymous> (e2e/app-dir/interception-dynamic-segment/interception-dynamic-segment.test.ts:126:7)

nextjs-bot · 2026-01-07T16:43:10Z

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)	454ms	455ms	✓	▁▃▁▁█
Cold (First Request)	1.166s	1.163s	✓	█▁█▁▁
Warm (Listen)	456ms	456ms	✓	█▁█▁█
Warm (First Request)	370ms	399ms	✓	▇▂▁▆█

📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric	Canary	PR	Change	Trend
Cold (Listen)	456ms	455ms	✓	▁█▅▁▁
Cold (First Request)	1.746s	1.767s	✓	▁█▄▁▁
Warm (Listen)	456ms	456ms	✓	▁█▄▁▁
Warm (First Request)	1.769s	1.758s	✓	▁█▅▁▁

⚡ Production Builds

Metric	Canary	PR	Change	Trend
Fresh Build	4.093s	4.046s	✓	▃█▁██
Cached Build	4.048s	4.055s	✓	▁█▁▆█

📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric	Canary	PR	Change	Trend
Fresh Build	13.824s	13.835s	✓	▁█▄▁▁
Cached Build	13.981s	14.041s	✓	▁█▄▁▁
node_modules Size	457 MB	457 MB	✓	▁▁▁▁▁

📦 Bundle Sizes

Bundle Sizes

⚡ Turbopack

Client

Main Bundles: **430 kB** → **430 kB** ✅ -5 B

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

Server

Middleware

	Canary	PR	Change
middleware-b..fest.js gzip	787 B	789 B	✓
Total	787 B	789 B	⚠️ +2 B

Build Details

Build Manifests

	Canary	PR	Change
_buildManifest.js gzip	448 B	451 B	✓
Total	448 B	451 B	⚠️ +3 B

📦 Webpack

Client

Main Bundles

	Canary	PR	Change
2086.HASH.js gzip	169 B	N/A	-
2161-HASH.js gzip	5.4 kB	N/A	-
2747-HASH.js gzip	4.48 kB	N/A	-
4322-HASH.js gzip	52.5 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	252 B	254 B	✓
main-HASH.js gzip	38.4 kB	38.8 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	52.2 kB	-
6349-HASH.js gzip	N/A	4.46 kB	-
7019-HASH.js gzip	N/A	5.42 kB	-
b17a3386-HASH.js gzip	N/A	62.3 kB	-
Total	225 kB	225 kB	⚠️ +126 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	124 kB	124 kB	✓
page.js gzip	240 kB	241 kB	✓
Total	364 kB	365 kB	⚠️ +730 B

Middleware

	Canary	PR	Change
middleware-b..fest.js gzip	653 B	655 B	✓
middleware-r..fest.js gzip	155 B	156 B	✓
middleware.js gzip	32.8 kB	33 kB	✓
edge-runtime..pack.js gzip	842 B	842 B	✓
Total	34.5 kB	34.6 kB	⚠️ +143 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	3.62 MB	3.63 MB	🔴 +7.08 kB (+0%)
index.pack gzip	97.5 kB	98.9 kB	🔴 +1.49 kB (+2%)
index.pack.old gzip	98 kB	99.5 kB	🔴 +1.51 kB (+2%)
Total	3.82 MB	3.83 MB	⚠️ +10.1 kB

🔄 Shared (bundler-independent)

Runtimes

	Canary	PR	Change
app-page-exp...dev.js gzip	303 kB	303 kB	✓
app-page-exp..prod.js gzip	158 kB	158 kB	✓
app-page-tur...dev.js gzip	302 kB	302 kB	✓
app-page-tur..prod.js gzip	158 kB	158 kB	✓
app-page-tur...dev.js gzip	299 kB	299 kB	✓
app-page-tur..prod.js gzip	156 kB	156 kB	✓
app-page.run...dev.js gzip	299 kB	299 kB	✓
app-page.run..prod.js gzip	156 kB	156 kB	✓
app-route-ex...dev.js gzip	68.7 kB	68.7 kB	✓
app-route-ex..prod.js gzip	47.5 kB	47.5 kB	✓
app-route-tu...dev.js gzip	68.7 kB	68.7 kB	✓
app-route-tu..prod.js gzip	47.6 kB	47.6 kB	✓
app-route-tu...dev.js gzip	68.3 kB	68.3 kB	✓
app-route-tu..prod.js gzip	47.3 kB	47.3 kB	✓
app-route.ru...dev.js gzip	68.3 kB	68.3 kB	✓
app-route.ru..prod.js gzip	47.3 kB	47.3 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	41.1 kB	41.1 kB	✓
pages-api-tu..prod.js gzip	31.2 kB	31.2 kB	✓
pages-api.ru...dev.js gzip	41 kB	41 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	2.68 MB	2.68 MB	✅ -15 B

📝 Changed Files (9 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
app-route-tu..time.prod.js
app-route.ru..time.prod.js
server.runtime.prod.js

View diffs

app-page-exp..ntime.dev.js

failed to diff

app-page-tur..ntime.dev.js

failed to diff

app-page-tur..ntime.dev.js

failed to diff

app-page.runtime.dev.js

failed to diff

app-route-ex..time.prod.js

Diff too large to display

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

Diff too large to display

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

Diff too large to display

app-route.ru..time.prod.js

Diff too large to display

server.runtime.prod.js

Diff too large to display

eps1lon · 2026-01-10T10:47:22Z

Nothing interesting in here.

nextjs-bot added 6 commits January 7, 2026 16:23

Update react@experimental

6e01a96

Update react

3b9d028

Updated peer dependency references in apps

256f3cb

Updated peer dependency references in libraries

0e6337f

Update lockfile

d7e8db8

ncc-compiled

1cb0418

nextjs-bot assigned eps1lon Jan 7, 2026

nextjs-bot requested a review from eps1lon January 7, 2026 16:24

nextjs-bot added type: react-sync CI approved Approve running CI for fork type: next labels Jan 7, 2026

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Uh oh!

Upgrade React from `65eec428-20251218` to `d6cae440-20260106` #88231

Upgrade React from `65eec428-20251218` to `d6cae440-20260106` #88231

nextjs-bot commented Jan 7, 2026

Uh oh!

nextjs-bot commented Jan 7, 2026

Uh oh!

nextjs-bot commented Jan 7, 2026

⚡ Dev Server

📦 Dev Server (Webpack)

⚡ Production Builds

📦 Production Builds (Webpack)

Bundle Sizes

⚡ Turbopack

📦 Webpack

🔄 Shared (bundler-independent)

Uh oh!

eps1lon commented Jan 10, 2026

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

3 participants

Upgrade React from 65eec428-20251218 to d6cae440-20260106 #88231

Are you sure you want to change the base?

Upgrade React from 65eec428-20251218 to d6cae440-20260106 #88231

Conversation

nextjs-bot commented Jan 7, 2026

Uh oh!

nextjs-bot commented Jan 7, 2026

Failing test suites

Uh oh!

nextjs-bot commented Jan 7, 2026

Stats from current PR

✅ No significant changes detected

⚡ Dev Server

📦 Dev Server (Webpack)

⚡ Production Builds

📦 Production Builds (Webpack)

Bundle Sizes

⚡ Turbopack

📦 Webpack

🔄 Shared (bundler-independent)

Uh oh!

eps1lon commented Jan 10, 2026

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

3 participants

Upgrade React from `65eec428-20251218` to `d6cae440-20260106` #88231

Upgrade React from `65eec428-20251218` to `d6cae440-20260106` #88231