Upgrade React from `756fdd47-20260727` to `96fcba90-20260728` by vercel-release-bot · Pull Request #96306 · vercel/next.js

vercel-release-bot · 2026-07-28T17:50:51Z

React upstream changes

[RN] Update ReactPrivate and InitializeCore imports (0.87 Strict API) react/react#36986
[Flight] Define Flight chunk .then with Object.defineProperty react/react#37109

github-actions · 2026-07-28T17:51:22Z

Stats from current PR

🟢 3 improvements

Metric	Canary	PR	Change	Trend
Turbo Build Time	5.383s	4.905s	🟢 478ms (-9%)	▂█▂▁▁
Turbo Build Time (cached)	5.559s	4.995s	🟢 564ms (-10%)	▁█▃▁▁
Webpack Cold (First Request)	3.550s	3.402s	🟢 148ms (-4%)	▂▂█▅▃

📊 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	762ms	✓	▂█▂▁▁
Cold (Ready in log)	787ms	765ms	✓	▁█▂▁▁
Cold (First Request)	1.299s	1.280s	✓	▁█▂▁▁
Warm (Listen)	812ms	761ms	✓	▂█▂▁▁
Warm (Ready in log)	780ms	768ms	✓	▁█▂▁▁
Warm (First Request)	1.266s	1.261s	✓	▁█▂▁▂

📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric	Canary	PR	Change	Trend
Cold (Listen)	813ms	813ms	✓	▄▅█▅▁
Cold (Ready in log)	804ms	798ms	✓	▂▃█▆▁
Cold (First Request)	3.550s	3.402s	🟢 148ms (-4%)	▂▂█▅▃
Warm (Listen)	814ms	813ms	✓	████▁
Warm (Ready in log)	800ms	805ms	✓	▂▃█▆▁
Warm (First Request)	3.465s	3.436s	✓	▁▄█▇▂

⚡ Production Builds

Metric	Canary	PR	Change	Trend
Fresh Build	5.383s	4.905s	🟢 478ms (-9%)	▂█▂▁▁
Cached Build	5.559s	4.995s	🟢 564ms (-10%)	▁█▃▁▁

📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric	Canary	PR	Change	Trend
Fresh Build	25.141s	25.208s	✓	▃▁██▃
Cached Build	25.176s	25.086s	✓	▁▁█▇▁
node_modules Size	550 MB	550 MB	✓	▁▁▁██

📦 Bundle Sizes

Bundle Sizes

⚡ Turbopack

Client

Main Bundles

	Canary	PR	Change
00984xh3ankve.js gzip	7.4 kB	N/A	-
00lv61-dw-p1s.js gzip	71.2 kB	N/A	-
0a-p0meqxynjz.js gzip	10.3 kB	N/A	-
0avtke4yefj4-.js gzip	13.1 kB	N/A	-
0cz1d0mv5g_q7.js gzip	39.4 kB	39.4 kB	✓
0fkgqovmj3kd_.js gzip	156 B	N/A	-
0pt5of3ch6d2u.js gzip	13.6 kB	N/A	-
0s_6le5473zon.js gzip	153 B	N/A	-
0utq7k-24q3k_.js gzip	157 B	N/A	-
0xnsdo-6y9r3k.js gzip	5.72 kB	N/A	-
0yi7is8u4covm.js gzip	8.77 kB	N/A	-
1elt1qium-r2m.css gzip	115 B	115 B	✓
1prv-wg6jgtt2.js gzip	8.77 kB	N/A	-
1t47vod02e_4a.js gzip	8.75 kB	N/A	-
1tf1phijqlx9j.js gzip	220 B	220 B	✓
1tw002sq5bo4l.js gzip	10 kB	N/A	-
1wlerik1n7zbr.js gzip	8.7 kB	N/A	-
2_zr4masp3rwy.js gzip	155 B	N/A	-
25xtago53_2xf.js gzip	160 B	N/A	-
2b2322zzwplhu.js gzip	161 B	N/A	-
2lviwqiqxm904.js gzip	3.52 kB	N/A	-
2pevdqjpbf3xk.js gzip	9.45 kB	N/A	-
2qd2anu9eizlz.js gzip	8.75 kB	N/A	-
2se72tcn7ulb_.js gzip	154 B	N/A	-
2sv39ae5_8vfj.js gzip	8.81 kB	N/A	-
2utx6n7w65xqa.js gzip	8.7 kB	N/A	-
2x2jbjxj8_k8h.js gzip	155 B	N/A	-
3-mgi7apkkmqn.js gzip	169 B	N/A	-
3-ukivglqkfeq.js gzip	8.78 kB	N/A	-
325xisqrylugu.js gzip	450 B	N/A	-
32fs4p58op4zm.js gzip	65.6 kB	N/A	-
367gc92a9294o.js gzip	158 B	N/A	-
3eswx3idwrkj8.js gzip	46.2 kB	N/A	-
3jc9ghvds1spf.js gzip	2.29 kB	N/A	-
3juwkvkgvywfe.js gzip	10.6 kB	N/A	-
3kbove7q58uqh.js gzip	13.2 kB	N/A	-
3kyroy-o6ffl5.js gzip	154 B	N/A	-
3md__14nrd0du.js gzip	156 B	N/A	-
3qn7vntp30gaj.js gzip	1.47 kB	N/A	-
3yz9mvl23_vys.js gzip	156 B	N/A	-
turbopack-00..nycg.js gzip	3.86 kB	N/A	-
turbopack-03..h4gn.js gzip	3.85 kB	N/A	-
turbopack-04..7jl6.js gzip	3.84 kB	N/A	-
turbopack-07..hdpt.js gzip	3.85 kB	N/A	-
turbopack-07..6ba4.js gzip	3.84 kB	N/A	-
turbopack-0a..weg2.js gzip	3.84 kB	N/A	-
turbopack-0a..ncn4.js gzip	3.85 kB	N/A	-
turbopack-0b..vyhj.js gzip	3.84 kB	N/A	-
turbopack-16..dn94.js gzip	3.84 kB	N/A	-
turbopack-1a..ymrt.js gzip	3.84 kB	N/A	-
turbopack-20..b45f.js gzip	3.85 kB	N/A	-
turbopack-2f..he3a.js gzip	3.82 kB	N/A	-
turbopack-3s..7_iy.js gzip	3.84 kB	N/A	-
turbopack-3y..s536.js gzip	3.84 kB	N/A	-
0_9-hrvr12n53.js gzip	N/A	161 B	-
030a1njeh5b77.js gzip	N/A	10 kB	-
04_0pje58tdal.js gzip	N/A	153 B	-
04cymg_4nf3a9.js gzip	N/A	46.2 kB	-
0762ohcfs5hmh.js gzip	N/A	65.6 kB	-
0ot0qt5np20h7.js gzip	N/A	8.78 kB	-
0t_fggm0_xxpv.js gzip	N/A	156 B	-
12m9rr7_7cexd.js gzip	N/A	8.7 kB	-
186r3y_rfvr0b.js gzip	N/A	8.78 kB	-
19kp1_j23-9g0.js gzip	N/A	162 B	-
19v97848yrjp7.js gzip	N/A	8.81 kB	-
1nd_0rwgz2ozk.js gzip	N/A	9.45 kB	-
1oi9pltr_e10m.js gzip	N/A	10.6 kB	-
1rd9tzqgzsz2w.js gzip	N/A	8.77 kB	-
1rq1g_cwv642d.js gzip	N/A	10.3 kB	-
1uojw_uabeg93.js gzip	N/A	450 B	-
1w-7lusgyl81y.js gzip	N/A	8.7 kB	-
1yf84zzm98oee.js gzip	N/A	157 B	-
20cxbvi52dcu8.js gzip	N/A	7.41 kB	-
21h56wdn9zddo.js gzip	N/A	8.75 kB	-
2fzbtehq6od5d.js gzip	N/A	158 B	-
2ia9jsnzvw1z_.js gzip	N/A	158 B	-
2lg10omv7xu14.js gzip	N/A	3.52 kB	-
2m7pysadpv9jx.js gzip	N/A	170 B	-
2ovff1533zvno.js gzip	N/A	13.2 kB	-
2s4z8jy0z7v93.js gzip	N/A	1.46 kB	-
2y6gb5bs4mnam.js gzip	N/A	8.75 kB	-
30-xsnotaxkq2.js gzip	N/A	155 B	-
341h71ln1jpl3.js gzip	N/A	2.29 kB	-
34r_lmnj-l_0s.js gzip	N/A	71.2 kB	-
34ttpt_n7605h.js gzip	N/A	5.72 kB	-
36ckfq9o-ys-a.js gzip	N/A	13.1 kB	-
3cm252vtfpe45.js gzip	N/A	157 B	-
3duxb6r04415w.js gzip	N/A	156 B	-
3euhi91ylya-8.js gzip	N/A	157 B	-
3vdh6_u50pu5t.js gzip	N/A	13.6 kB	-
3xpdobk_3xyd8.js gzip	N/A	156 B	-
turbopack-0i..n_6b.js gzip	N/A	3.85 kB	-
turbopack-0u..57xm.js gzip	N/A	3.84 kB	-
turbopack-14..t3l7.js gzip	N/A	3.85 kB	-
turbopack-1i..1rnb.js gzip	N/A	3.85 kB	-
turbopack-1m..0fd7.js gzip	N/A	3.85 kB	-
turbopack-1o..7l0x.js gzip	N/A	3.85 kB	-
turbopack-1s..ysh5.js gzip	N/A	3.85 kB	-
turbopack-3-..zru6.js gzip	N/A	3.85 kB	-
turbopack-37..xvtz.js gzip	N/A	3.85 kB	-
turbopack-39..dfi1.js gzip	N/A	3.82 kB	-
turbopack-39..4wym.js gzip	N/A	3.86 kB	-
turbopack-3a..bncu.js gzip	N/A	3.84 kB	-
turbopack-3e..vk0g.js gzip	N/A	3.85 kB	-
turbopack-41..obw3.js gzip	N/A	3.84 kB	-
Total	450 kB	450 kB	⚠️ +80 B

Server

Middleware

	Canary	PR	Change
middleware-b..fest.js gzip	776 B	775 B	✓
Total	776 B	775 B	✅ -1 B

Build Details

Build Manifests

	Canary	PR	Change
_buildManifest.js gzip	432 B	436 B	✓
Total	432 B	436 B	⚠️ +4 B

📦 Webpack

Client

Main Bundles

	Canary	PR	Change
3322-HASH.js gzip	64.8 kB	N/A	-
4191.HASH.js gzip	169 B	N/A	-
7920-HASH.js gzip	4.68 kB	N/A	-
9784-HASH.js gzip	5.63 kB	N/A	-
b1ad9f4c-HASH.js gzip	63 kB	N/A	-
framework-HASH.js gzip	59.7 kB	59.7 kB	✓
main-app-HASH.js gzip	254 B	252 B	✓
main-HASH.js gzip	40 kB	40 kB	✓
webpack-HASH.js gzip	1.68 kB	1.68 kB	✓
3577.HASH.js gzip	N/A	168 B	-
578-HASH.js gzip	N/A	65.6 kB	-
8590-HASH.js gzip	N/A	5.61 kB	-
9750-HASH.js gzip	N/A	4.69 kB	-
a8984546-HASH.js gzip	N/A	63 kB	-
Total	240 kB	241 kB	⚠️ +679 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	181 B	182 B	✓
css-HASH.js gzip	334 B	331 B	✓
dynamic-HASH.js gzip	1.81 kB	1.81 kB	✓
edge-ssr-HASH.js gzip	255 B	253 B	✓
head-HASH.js gzip	349 B	351 B	✓
hooks-HASH.js gzip	382 B	384 B	✓
image-HASH.js gzip	581 B	582 B	✓
index-HASH.js gzip	260 B	259 B	✓
link-HASH.js gzip	2.48 kB	2.48 kB	✓
routerDirect..HASH.js gzip	317 B	318 B	✓
script-HASH.js gzip	384 B	386 B	✓
withRouter-HASH.js gzip	316 B	315 B	✓
1afbb74e6ecf..834.css gzip	106 B	106 B	✓
Total	7.95 kB	7.95 kB	⚠️ +1 B

Server

Edge SSR

	Canary	PR	Change
edge-ssr.js gzip	129 kB	128 kB	✓
page.js gzip	292 kB	293 kB	✓
Total	421 kB	421 kB	⚠️ +351 B

Middleware

	Canary	PR	Change
middleware-b..fest.js gzip	617 B	617 B	✓
middleware-r..fest.js gzip	156 B	156 B	✓
middleware.js gzip	45.6 kB	45.1 kB	🟢 575 B (-1%)
edge-runtime..pack.js gzip	842 B	842 B	✓
Total	47.3 kB	46.7 kB	✅ -575 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
0.pack gzip	4.82 MB	4.82 MB	✓
index.pack gzip	122 kB	123 kB	✓
index.pack.old gzip	122 kB	124 kB	✓
Total	5.07 MB	5.07 MB	⚠️ +312 B

🔄 Shared (bundler-independent)

Runtimes

	Canary	PR	Change
app-page-exp...dev.js gzip	372 kB	372 kB	✓
app-page-exp..prod.js gzip	205 kB	205 kB	✓
app-page-tur...dev.js gzip	371 kB	371 kB	✓
app-page-tur..prod.js gzip	205 kB	205 kB	✓
app-page-tur...dev.js gzip	368 kB	368 kB	✓
app-page-tur..prod.js gzip	203 kB	203 kB	✓
app-page.run...dev.js gzip	368 kB	368 kB	✓
app-page.run..prod.js gzip	203 kB	203 kB	✓
app-route-ex...dev.js gzip	82.5 kB	82.5 kB	✓
app-route-ex..prod.js gzip	55.9 kB	55.9 kB	✓
app-route-tu...dev.js gzip	82.5 kB	82.5 kB	✓
app-route-tu..prod.js gzip	55.9 kB	55.9 kB	✓
app-route-tu...dev.js gzip	82.1 kB	82.1 kB	✓
app-route-tu..prod.js gzip	55.7 kB	55.7 kB	✓
app-route.ru...dev.js gzip	82.1 kB	82.1 kB	✓
app-route.ru..prod.js gzip	55.7 kB	55.7 kB	✓
dev-validati...dev.js gzip	132 kB	132 kB	✓
dev-validati...dev.js gzip	132 kB	132 kB	✓
dev-validati...dev.js gzip	130 kB	130 kB	✓
dev-validati...dev.js gzip	130 kB	130 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	45.4 kB	45.4 kB	✓
pages-api-tu..prod.js gzip	34.1 kB	34.1 kB	✓
pages-api.ru...dev.js gzip	45.4 kB	45.4 kB	✓
pages-api.ru..prod.js gzip	34.1 kB	34.1 kB	✓
pages-turbo....dev.js gzip	54.9 kB	54.9 kB	✓
pages-turbo...prod.js gzip	39.8 kB	39.8 kB	✓
pages.runtim...dev.js gzip	54.9 kB	54.9 kB	✓
pages.runtim..prod.js gzip	39.7 kB	39.7 kB	✓
server.runti..prod.js gzip	68.3 kB	68.3 kB	✓
use-cache-pr...dev.js gzip	72 kB	72 kB	✓
use-cache-pr...dev.js gzip	72 kB	72 kB	✓
use-cache-pr...dev.js gzip	70.3 kB	70.4 kB	✓
use-cache-pr...dev.js gzip	70.3 kB	70.3 kB	✓
Total	4.07 MB	4.07 MB	⚠️ +265 B

📝 Changed Files (17 files)

Files with changes:

app-page-exp..ntime.dev.js
app-page-exp..time.prod.js
app-page-tur..ntime.dev.js
app-page-tur..time.prod.js
app-page-tur..ntime.dev.js
app-page-tur..time.prod.js
app-page.runtime.dev.js
app-page.runtime.prod.js
dev-validati..ntime.dev.js
dev-validati..ntime.dev.js
dev-validati..ntime.dev.js
dev-validati..ntime.dev.js
server.runtime.prod.js
use-cache-pr..ntime.dev.js
use-cache-pr..ntime.dev.js
use-cache-pr..ntime.dev.js
use-cache-pr..ntime.dev.js

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app-page-exp..time.prod.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-tur..time.prod.js

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app-page.runtime.dev.js

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app-page.runtime.prod.js

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📎 Tarball URL

https://vercel-packages.vercel.app/next/commits/cc39e96bc0ae47ab33842abb6a88f924e6d6c217/next

Commit: cc39e96

github-actions · 2026-07-28T17:51:30Z

Tests Passed

Commit: cc39e96

next-js-bot Bot added 6 commits July 28, 2026 17:50

Update react@experimental

7268af7

Update react

e800dbe

Updated peer dependency references in apps

f03aa22

Updated peer dependency references in libraries

23a745e

Update lockfile

b5aac94

ncc-compiled

cc39e96

vercel-release-bot requested a review from eps1lon July 28, 2026 17:50

vercel-release-bot added the type: react-sync label Jul 28, 2026

eps1lon enabled auto-merge (squash) July 28, 2026 19:19

eps1lon approved these changes Jul 28, 2026

View reviewed changes

eps1lon merged commit 9ce6d48 into canary Jul 28, 2026
129 checks passed

eps1lon deleted the update/react/19.3.0-canary-96fcba90-20260728 branch July 28, 2026 19:19

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Upgrade React from `756fdd47-20260727` to `96fcba90-20260728` - #96306

Upgrade React from `756fdd47-20260727` to `96fcba90-20260728`#96306
eps1lon merged 6 commits into
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update/react/19.3.0-canary-96fcba90-20260728

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🟢 3 improvements

⚡ Dev Server

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