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Upgrade React from 46103596-20260305 to 5e9eedb5-20260312 - #91272

Merged
eps1lon merged 6 commits into
canaryfrom
update/react/19.3.0-canary-5e9eedb5-20260312
Mar 12, 2026
Merged

Upgrade React from 46103596-20260305 to 5e9eedb5-20260312#91272
eps1lon merged 6 commits into
canaryfrom
update/react/19.3.0-canary-5e9eedb5-20260312

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@nextjs-botnextjs-bot commented Mar 12, 2026•
edited by unstubbable
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nextjs-bot requested a review from eps1lonMarch 12, 2026 18:31
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eps1lon enabled auto-merge (squash) March 12, 2026 18:35
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Failing test suites

Commit: 0e19f81 | About building and testing Next.js

pnpm test-start-turbo test/production/deterministic-build/deployment-id.test.ts (turbopack) (job)

  • deterministic build - changing deployment id > build output API - standard builder > should produce identical build outputs even when changing deployment id (DD)
Expand output

● deterministic build - changing deployment id › build output API - standard builder › should produce identical build outputs even when changing deployment id

thrown: "Exceeded timeout of 60000 ms for a test.
Add a timeout value to this test to increase the timeout, if this is a long-running test. See https://jestjs.io/docs/api#testname-fn-timeout."
50 | }
51 |
> 52 | const result = Reflect.apply(target, thisArg, args)
| ^
53 | return typeof result === 'function' ? wrapJestTestFn(result) : result
54 | },
55 | get(target, prop, receiver) {
at Object.apply (lib/e2e-utils/index.ts:52:30)
at it (production/deterministic-build/deployment-id.test.ts:261:7)
at Array.forEach (<anonymous>)
at production/deterministic-build/deployment-id.test.ts:233:6
at Object.<anonymous> (production/deterministic-build/deployment-id.test.ts:207:58)

@nextjs-bot

nextjs-bot commented Mar 12, 2026

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ContributorAuthor

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

MetricCanaryPRChangeTrend
Cold (Listen)456ms456ms✓▁█▁▁▁
Cold (Ready in log)445ms449ms✓▂▇▁▁▁
Cold (First Request)910ms913ms✓▃▇▃▂▃
Warm (Listen)456ms455ms✓▁█▁▁▁
Warm (Ready in log)446ms443ms✓▁▇▁▁▁
Warm (First Request)355ms353ms✓▁▇▂▁▁
📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

MetricCanaryPRChangeTrend
Cold (Listen)456ms455ms✓▁▁▁▁▁
Cold (Ready in log)438ms439ms✓▁▆█▆▆
Cold (First Request)1.951s1.962s✓▁▃▇▄▃
Warm (Listen)456ms456ms✓▁▁█▁▁
Warm (Ready in log)437ms438ms✓▁▆█▆▆
Warm (First Request)1.950s1.968s✓▁▃▅▃▃

⚡ Production Builds

MetricCanaryPRChangeTrend
Fresh Build4.286s4.293s✓▁▇▁▂▁
Cached Build4.296s4.248s✓▁▆▁▂▁
📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

MetricCanaryPRChangeTrend
Fresh Build14.272s14.286s✓▁▂▅▁▁
Cached Build14.384s14.402s✓▁▂▅▁▁
node_modules Size481 MB481 MB✓█████
📦 Bundle Sizes

Bundle Sizes

⚡ Turbopack

Client

Main Bundles: **408 kB** → **408 kB** ⚠️ +67 B

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

Server

Middleware
CanaryPRChange
middleware-b..fest.js gzip771 B764 B✓
Total771 B764 B✅ -7 B
Build Details
Build Manifests
CanaryPRChange
_buildManifest.js gzip450 B450 B✓
Total450 B450 B✓

📦 Webpack

Client

Main Bundles
CanaryPRChange
5528-HASH.js gzip5.54 kBN/A-
6280-HASH.js gzip59.6 kBN/A-
6335.HASH.js gzip169 BN/A-
912-HASH.js gzip4.59 kBN/A-
e8aec2e4-HASH.js gzip62.6 kBN/A-
framework-HASH.js gzip59.7 kB59.7 kB✓
main-app-HASH.js gzip256 B255 B✓
main-HASH.js gzip39.2 kB39.2 kB✓
webpack-HASH.js gzip1.68 kB1.68 kB✓
262-HASH.js gzipN/A4.59 kB-
2889.HASH.js gzipN/A169 B-
5602-HASH.js gzipN/A5.55 kB-
6948ada0-HASH.js gzipN/A62.7 kB-
9544-HASH.js gzipN/A60.4 kB-
Total233 kB234 kB⚠️ +823 B
Polyfills
CanaryPRChange
polyfills-HASH.js gzip39.4 kB39.4 kB✓
Total39.4 kB39.4 kB✓
Pages
CanaryPRChange
_app-HASH.js gzip194 B194 B✓
_error-HASH.js gzip183 B180 B🟢 3 B (-2%)
css-HASH.js gzip331 B330 B✓
dynamic-HASH.js gzip1.81 kB1.81 kB✓
edge-ssr-HASH.js gzip256 B256 B✓
head-HASH.js gzip351 B352 B✓
hooks-HASH.js gzip384 B383 B✓
image-HASH.js gzip580 B581 B✓
index-HASH.js gzip260 B260 B✓
link-HASH.js gzip2.51 kB2.51 kB✓
routerDirect..HASH.js gzip320 B319 B✓
script-HASH.js gzip386 B386 B✓
withRouter-HASH.js gzip315 B315 B✓
1afbb74e6ecf..834.css gzip106 B106 B✓
Total7.98 kB7.98 kB✅ -1 B

Server

Edge SSR
CanaryPRChange
edge-ssr.js gzip125 kB125 kB✓
page.js gzip266 kB266 kB✓
Total391 kB391 kB⚠️ +239 B
Middleware
CanaryPRChange
middleware-b..fest.js gzip617 B615 B✓
middleware-r..fest.js gzip156 B155 B✓
middleware.js gzip43.6 kB43.9 kB✓
edge-runtime..pack.js gzip842 B842 B✓
Total45.2 kB45.5 kB⚠️ +298 B
Build Details
Build Manifests
CanaryPRChange
_buildManifest.js gzip715 B718 B✓
Total715 B718 B⚠️ +3 B
Build Cache
CanaryPRChange
0.pack gzip4.2 MB4.19 MB🟢 5.67 kB (0%)
index.pack gzip108 kB107 kB✓
index.pack.old gzip108 kB107 kB✓
Total4.41 MB4.4 MB✅ -6.59 kB

🔄 Shared (bundler-independent)

Runtimes
CanaryPRChange
app-page-exp...dev.js gzip331 kB331 kB✓
app-page-exp..prod.js gzip179 kB179 kB✓
app-page-tur...dev.js gzip331 kB331 kB✓
app-page-tur..prod.js gzip179 kB179 kB✓
app-page-tur...dev.js gzip327 kB327 kB✓
app-page-tur..prod.js gzip177 kB177 kB✓
app-page.run...dev.js gzip328 kB328 kB✓
app-page.run..prod.js gzip177 kB177 kB✓
app-route-ex...dev.js gzip75.9 kB75.9 kB✓
app-route-ex..prod.js gzip51.6 kB51.6 kB✓
app-route-tu...dev.js gzip75.9 kB75.9 kB✓
app-route-tu..prod.js gzip51.6 kB51.6 kB✓
app-route-tu...dev.js gzip75.5 kB75.5 kB✓
app-route-tu..prod.js gzip51.4 kB51.4 kB✓
app-route.ru...dev.js gzip75.5 kB75.5 kB✓
app-route.ru..prod.js gzip51.4 kB51.4 kB✓
dist_client_...dev.js gzip324 B324 B✓
dist_client_...dev.js gzip326 B326 B✓
dist_client_...dev.js gzip318 B318 B✓
dist_client_...dev.js gzip317 B317 B✓
pages-api-tu...dev.js gzip43.3 kB43.3 kB✓
pages-api-tu..prod.js gzip32.9 kB32.9 kB✓
pages-api.ru...dev.js gzip43.2 kB43.2 kB✓
pages-api.ru..prod.js gzip32.9 kB32.9 kB✓
pages-turbo....dev.js gzip52.6 kB52.6 kB✓
pages-turbo...prod.js gzip38.5 kB38.5 kB✓
pages.runtim...dev.js gzip52.6 kB52.6 kB✓
pages.runtim..prod.js gzip38.5 kB38.5 kB✓
server.runti..prod.js gzip62.4 kB62.4 kB✓
Total2.94 MB2.94 MB⚠️ +7 B
📝 Changed Files (9 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
  • server.runtime.prod.js
View diffs
app-page-exp..ntime.dev.js
failed to diff
app-page-exp..time.prod.js

Diff too large to display

app-page-tur..ntime.dev.js
failed to diff
app-page-tur..time.prod.js

Diff too large to display

app-page-tur..ntime.dev.js
failed to diff
app-page-tur..time.prod.js

Diff too large to display

app-page.runtime.dev.js
failed to diff
app-page.runtime.prod.js

Diff too large to display

server.runtime.prod.js

Diff too large to display

📎 Tarball URL
https://vercel-packages.vercel.app/next/commits/ca344b721ff8e00c44ddb2748f53853088dcc256/next

@eps1lon
eps1lon merged commit bd04a07 into canaryMar 12, 2026
284 of 287 checks passed
@eps1lon
eps1lon deleted the update/react/19.3.0-canary-5e9eedb5-20260312 branch March 12, 2026 19:27
@github-actionsgithub-actionsBot locked as resolved and limited conversation to collaborators Mar 27, 2026
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Successfully merging this pull request may close these issues.

[Flight] chunk.reason.error is not a function

2 participants

@nextjs-bot@eps1lon
, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
 blocks
(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
Upgrade React from `46103596-20260305` to `5e9eedb5-20260312` by nextjs-bot · Pull Request #91272 · vercel/next.js · GitHub
Skip to content
Upgrade React from 46103596-20260305 to 5e9eedb5-20260312 - #91272
Merged
eps1lon merged 6 commits into
canaryfrom 
update/react/19.3.0-canary-5e9eedb5-20260312
Mar 12, 2026
Merged
Upgrade React from 46103596-20260305 to 5e9eedb5-20260312#91272
eps1lon merged 6 commits into
canaryfrom 
update/react/19.3.0-canary-5e9eedb5-20260312
Conversation
@nextjs-bot
@nextjs-botnextjs-bot
commented
Mar 12, 2026•

edited by unstubbable

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@nextjs-bot
nextjs-bot
requested a review
from eps1lonMarch 12, 2026 18:31
@eps1lon
eps1lon
enabled auto-merge (squash)
March 12, 2026 18:35
@nextjs-bot
nextjs-bot
commented
Mar 12, 2026

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ContributorAuthor
Failing test suites 
Commit: 0e19f81 | About building and testing Next.js
pnpm test-start-turbo test/production/deterministic-build/deployment-id.test.ts (turbopack) (job)
  • deterministic build - changing deployment id > build output API - standard builder > should produce identical build outputs even when changing deployment id (DD)
Expand output
● deterministic build - changing deployment id › build output API - standard builder › should produce identical build outputs even when changing deployment id
thrown: "Exceeded timeout of 60000 ms for a test.
Add a timeout value to this test to increase the timeout, if this is a long-running test. See https://jestjs.io/docs/api#testname-fn-timeout."
50 | }
51 |
> 52 | const result = Reflect.apply(target, thisArg, args)
| ^
53 | return typeof result === 'function' ? wrapJestTestFn(result) : result
54 | },
55 | get(target, prop, receiver) {
at Object.apply (lib/e2e-utils/index.ts:52:30)
at it (production/deterministic-build/deployment-id.test.ts:261:7)
at Array.forEach (<anonymous>)
at production/deterministic-build/deployment-id.test.ts:233:6
at Object.<anonymous> (production/deterministic-build/deployment-id.test.ts:207:58)

@nextjs-bot
nextjs-bot
commented
Mar 12, 2026

Copy link


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ContributorAuthor
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
MetricCanaryPRChangeTrend
Cold (Listen)456ms456ms✓▁█▁▁▁
Cold (Ready in log)445ms449ms✓▂▇▁▁▁
Cold (First Request)910ms913ms✓▃▇▃▂▃
Warm (Listen)456ms455ms✓▁█▁▁▁
Warm (Ready in log)446ms443ms✓▁▇▁▁▁
Warm (First Request)355ms353ms✓▁▇▂▁▁
📦 Dev Server (Webpack) (Legacy)
📦 Dev Server (Webpack)
MetricCanaryPRChangeTrend
Cold (Listen)456ms455ms✓▁▁▁▁▁
Cold (Ready in log)438ms439ms✓▁▆█▆▆
Cold (First Request)1.951s1.962s✓▁▃▇▄▃
Warm (Listen)456ms456ms✓▁▁█▁▁
Warm (Ready in log)437ms438ms✓▁▆█▆▆
Warm (First Request)1.950s1.968s✓▁▃▅▃▃
⚡ Production Builds
MetricCanaryPRChangeTrend
Fresh Build4.286s4.293s✓▁▇▁▂▁
Cached Build4.296s4.248s✓▁▆▁▂▁
📦 Production Builds (Webpack) (Legacy)
📦 Production Builds (Webpack)
MetricCanaryPRChangeTrend
Fresh Build14.272s14.286s✓▁▂▅▁▁
Cached Build14.384s14.402s✓▁▂▅▁▁
node_modules Size481 MB481 MB✓█████
📦 Bundle Sizes
Bundle Sizes
⚡ Turbopack
Client
Main Bundles: **408 kB** → **408 kB** ⚠️ +67 B
80 files with content-based hashes (individual files not comparable between builds)
Server
Middleware
CanaryPRChange
middleware-b..fest.js gzip771 B764 B✓
Total771 B764 B✅ -7 B
Build Details
Build Manifests
CanaryPRChange
_buildManifest.js gzip450 B450 B✓
Total450 B450 B✓
📦 Webpack
Client
Main Bundles
CanaryPRChange
5528-HASH.js gzip5.54 kBN/A-
6280-HASH.js gzip59.6 kBN/A-
6335.HASH.js gzip169 BN/A-
912-HASH.js gzip4.59 kBN/A-
e8aec2e4-HASH.js gzip62.6 kBN/A-
framework-HASH.js gzip59.7 kB59.7 kB✓
main-app-HASH.js gzip256 B255 B✓
main-HASH.js gzip39.2 kB39.2 kB✓
webpack-HASH.js gzip1.68 kB1.68 kB✓
262-HASH.js gzipN/A4.59 kB-
2889.HASH.js gzipN/A169 B-
5602-HASH.js gzipN/A5.55 kB-
6948ada0-HASH.js gzipN/A62.7 kB-
9544-HASH.js gzipN/A60.4 kB-
Total233 kB234 kB⚠️ +823 B
Polyfills
CanaryPRChange
polyfills-HASH.js gzip39.4 kB39.4 kB✓
Total39.4 kB39.4 kB✓
Pages
CanaryPRChange
_app-HASH.js gzip194 B194 B✓
_error-HASH.js gzip183 B180 B🟢 3 B (-2%)
css-HASH.js gzip331 B330 B✓
dynamic-HASH.js gzip1.81 kB1.81 kB✓
edge-ssr-HASH.js gzip256 B256 B✓
head-HASH.js gzip351 B352 B✓
hooks-HASH.js gzip384 B383 B✓
image-HASH.js gzip580 B581 B✓
index-HASH.js gzip260 B260 B✓
link-HASH.js gzip2.51 kB2.51 kB✓
routerDirect..HASH.js gzip320 B319 B✓
script-HASH.js gzip386 B386 B✓
withRouter-HASH.js gzip315 B315 B✓
1afbb74e6ecf..834.css gzip106 B106 B✓
Total7.98 kB7.98 kB✅ -1 B
Server
Edge SSR
CanaryPRChange
edge-ssr.js gzip125 kB125 kB✓
page.js gzip266 kB266 kB✓
Total391 kB391 kB⚠️ +239 B
Middleware
CanaryPRChange
middleware-b..fest.js gzip617 B615 B✓
middleware-r..fest.js gzip156 B155 B✓
middleware.js gzip43.6 kB43.9 kB✓
edge-runtime..pack.js gzip842 B842 B✓
Total45.2 kB45.5 kB⚠️ +298 B
Build Details
Build Manifests
CanaryPRChange
_buildManifest.js gzip715 B718 B✓
Total715 B718 B⚠️ +3 B
Build Cache
CanaryPRChange
0.pack gzip4.2 MB4.19 MB🟢 5.67 kB (0%)
index.pack gzip108 kB107 kB✓
index.pack.old gzip108 kB107 kB✓
Total4.41 MB4.4 MB✅ -6.59 kB
🔄 Shared (bundler-independent)
Runtimes
CanaryPRChange
app-page-exp...dev.js gzip331 kB331 kB✓
app-page-exp..prod.js gzip179 kB179 kB✓
app-page-tur...dev.js gzip331 kB331 kB✓
app-page-tur..prod.js gzip179 kB179 kB✓
app-page-tur...dev.js gzip327 kB327 kB✓
app-page-tur..prod.js gzip177 kB177 kB✓
app-page.run...dev.js gzip328 kB328 kB✓
app-page.run..prod.js gzip177 kB177 kB✓
app-route-ex...dev.js gzip75.9 kB75.9 kB✓
app-route-ex..prod.js gzip51.6 kB51.6 kB✓
app-route-tu...dev.js gzip75.9 kB75.9 kB✓
app-route-tu..prod.js gzip51.6 kB51.6 kB✓
app-route-tu...dev.js gzip75.5 kB75.5 kB✓
app-route-tu..prod.js gzip51.4 kB51.4 kB✓
app-route.ru...dev.js gzip75.5 kB75.5 kB✓
app-route.ru..prod.js gzip51.4 kB51.4 kB✓
dist_client_...dev.js gzip324 B324 B✓
dist_client_...dev.js gzip326 B326 B✓
dist_client_...dev.js gzip318 B318 B✓
dist_client_...dev.js gzip317 B317 B✓
pages-api-tu...dev.js gzip43.3 kB43.3 kB✓
pages-api-tu..prod.js gzip32.9 kB32.9 kB✓
pages-api.ru...dev.js gzip43.2 kB43.2 kB✓
pages-api.ru..prod.js gzip32.9 kB32.9 kB✓
pages-turbo....dev.js gzip52.6 kB52.6 kB✓
pages-turbo...prod.js gzip38.5 kB38.5 kB✓
pages.runtim...dev.js gzip52.6 kB52.6 kB✓
pages.runtim..prod.js gzip38.5 kB38.5 kB✓
server.runti..prod.js gzip62.4 kB62.4 kB✓
Total2.94 MB2.94 MB⚠️ +7 B
📝 Changed Files (9 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
  • server.runtime.prod.js
View diffs
app-page-exp..ntime.dev.js
failed to diff
app-page-exp..time.prod.js
Diff too large to display
app-page-tur..ntime.dev.js
failed to diff
app-page-tur..time.prod.js
Diff too large to display
app-page-tur..ntime.dev.js
failed to diff
app-page-tur..time.prod.js
Diff too large to display
app-page.runtime.dev.js
failed to diff
app-page.runtime.prod.js
Diff too large to display
server.runtime.prod.js
Diff too large to display
📎 Tarball URL
https://vercel-packages.vercel.app/next/commits/ca344b721ff8e00c44ddb2748f53853088dcc256/next

@eps1lon
eps1lon
merged commit bd04a07
into
canaryMar 12, 2026

284 of 287 checks passed

@eps1lon
eps1lon
deleted the

update/react/19.3.0-canary-5e9eedb5-20260312

branch
March 12, 2026 19:27
@github-actionsgithub-actionsBot
locked as resolved and limited conversation to collaborators
Mar 27, 2026
Sign up for freeto subscribe to this conversation on GitHub.
Already have an account?
Sign in.


Reviewers

@eps1loneps1loneps1lon approved these changes

Assignees

@eps1loneps1lon

Labels

lockedtype: nexttype: react-sync

Projects


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Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

[Flight] chunk.reason.error is not a function


2 participants

@nextjs-bot@eps1lon

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
.markdown-body img { background: #0d1117; }
.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Upgrade React from `46103596-20260305` to `5e9eedb5-20260312` by nextjs-bot · Pull Request #91272 · vercel/next.js · GitHub
Skip to content
Upgrade React from 46103596-20260305 to 5e9eedb5-20260312 - #91272
Merged
eps1lon merged 6 commits into
canaryfrom 
update/react/19.3.0-canary-5e9eedb5-20260312
Mar 12, 2026
Merged
Upgrade React from 46103596-20260305 to 5e9eedb5-20260312#91272
eps1lon merged 6 commits into
canaryfrom 
update/react/19.3.0-canary-5e9eedb5-20260312
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Mar 12, 2026•

edited by unstubbable

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requested a review
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Failing test suites 
Commit: 0e19f81 | About building and testing Next.js
pnpm test-start-turbo test/production/deterministic-build/deployment-id.test.ts (turbopack) (job)
  • deterministic build - changing deployment id > build output API - standard builder > should produce identical build outputs even when changing deployment id (DD)
Expand output
● deterministic build - changing deployment id › build output API - standard builder › should produce identical build outputs even when changing deployment id
thrown: "Exceeded timeout of 60000 ms for a test.
Add a timeout value to this test to increase the timeout, if this is a long-running test. See https://jestjs.io/docs/api#testname-fn-timeout."
50 | }
51 |
> 52 | const result = Reflect.apply(target, thisArg, args)
| ^
53 | return typeof result === 'function' ? wrapJestTestFn(result) : result
54 | },
55 | get(target, prop, receiver) {
at Object.apply (lib/e2e-utils/index.ts:52:30)
at it (production/deterministic-build/deployment-id.test.ts:261:7)
at Array.forEach (<anonymous>)
at production/deterministic-build/deployment-id.test.ts:233:6
at Object.<anonymous> (production/deterministic-build/deployment-id.test.ts:207:58)

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ContributorAuthor
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
MetricCanaryPRChangeTrend
Cold (Listen)456ms456ms✓▁█▁▁▁
Cold (Ready in log)445ms449ms✓▂▇▁▁▁
Cold (First Request)910ms913ms✓▃▇▃▂▃
Warm (Listen)456ms455ms✓▁█▁▁▁
Warm (Ready in log)446ms443ms✓▁▇▁▁▁
Warm (First Request)355ms353ms✓▁▇▂▁▁
📦 Dev Server (Webpack) (Legacy)
📦 Dev Server (Webpack)
MetricCanaryPRChangeTrend
Cold (Listen)456ms455ms✓▁▁▁▁▁
Cold (Ready in log)438ms439ms✓▁▆█▆▆
Cold (First Request)1.951s1.962s✓▁▃▇▄▃
Warm (Listen)456ms456ms✓▁▁█▁▁
Warm (Ready in log)437ms438ms✓▁▆█▆▆
Warm (First Request)1.950s1.968s✓▁▃▅▃▃
⚡ Production Builds
MetricCanaryPRChangeTrend
Fresh Build4.286s4.293s✓▁▇▁▂▁
Cached Build4.296s4.248s✓▁▆▁▂▁
📦 Production Builds (Webpack) (Legacy)
📦 Production Builds (Webpack)
MetricCanaryPRChangeTrend
Fresh Build14.272s14.286s✓▁▂▅▁▁
Cached Build14.384s14.402s✓▁▂▅▁▁
node_modules Size481 MB481 MB✓█████
📦 Bundle Sizes
Bundle Sizes
⚡ Turbopack
Client
Main Bundles: **408 kB** → **408 kB** ⚠️ +67 B
80 files with content-based hashes (individual files not comparable between builds)
Server
Middleware
CanaryPRChange
middleware-b..fest.js gzip771 B764 B✓
Total771 B764 B✅ -7 B
Build Details
Build Manifests
CanaryPRChange
_buildManifest.js gzip450 B450 B✓
Total450 B450 B✓
📦 Webpack
Client
Main Bundles
CanaryPRChange
5528-HASH.js gzip5.54 kBN/A-
6280-HASH.js gzip59.6 kBN/A-
6335.HASH.js gzip169 BN/A-
912-HASH.js gzip4.59 kBN/A-
e8aec2e4-HASH.js gzip62.6 kBN/A-
framework-HASH.js gzip59.7 kB59.7 kB✓
main-app-HASH.js gzip256 B255 B✓
main-HASH.js gzip39.2 kB39.2 kB✓
webpack-HASH.js gzip1.68 kB1.68 kB✓
262-HASH.js gzipN/A4.59 kB-
2889.HASH.js gzipN/A169 B-
5602-HASH.js gzipN/A5.55 kB-
6948ada0-HASH.js gzipN/A62.7 kB-
9544-HASH.js gzipN/A60.4 kB-
Total233 kB234 kB⚠️ +823 B
Polyfills
CanaryPRChange
polyfills-HASH.js gzip39.4 kB39.4 kB✓
Total39.4 kB39.4 kB✓
Pages
CanaryPRChange
_app-HASH.js gzip194 B194 B✓
_error-HASH.js gzip183 B180 B🟢 3 B (-2%)
css-HASH.js gzip331 B330 B✓
dynamic-HASH.js gzip1.81 kB1.81 kB✓
edge-ssr-HASH.js gzip256 B256 B✓
head-HASH.js gzip351 B352 B✓
hooks-HASH.js gzip384 B383 B✓
image-HASH.js gzip580 B581 B✓
index-HASH.js gzip260 B260 B✓
link-HASH.js gzip2.51 kB2.51 kB✓
routerDirect..HASH.js gzip320 B319 B✓
script-HASH.js gzip386 B386 B✓
withRouter-HASH.js gzip315 B315 B✓
1afbb74e6ecf..834.css gzip106 B106 B✓
Total7.98 kB7.98 kB✅ -1 B
Server
Edge SSR
CanaryPRChange
edge-ssr.js gzip125 kB125 kB✓
page.js gzip266 kB266 kB✓
Total391 kB391 kB⚠️ +239 B
Middleware
CanaryPRChange
middleware-b..fest.js gzip617 B615 B✓
middleware-r..fest.js gzip156 B155 B✓
middleware.js gzip43.6 kB43.9 kB✓
edge-runtime..pack.js gzip842 B842 B✓
Total45.2 kB45.5 kB⚠️ +298 B
Build Details
Build Manifests
CanaryPRChange
_buildManifest.js gzip715 B718 B✓
Total715 B718 B⚠️ +3 B
Build Cache
CanaryPRChange
0.pack gzip4.2 MB4.19 MB🟢 5.67 kB (0%)
index.pack gzip108 kB107 kB✓
index.pack.old gzip108 kB107 kB✓
Total4.41 MB4.4 MB✅ -6.59 kB
🔄 Shared (bundler-independent)
Runtimes
CanaryPRChange
app-page-exp...dev.js gzip331 kB331 kB✓
app-page-exp..prod.js gzip179 kB179 kB✓
app-page-tur...dev.js gzip331 kB331 kB✓
app-page-tur..prod.js gzip179 kB179 kB✓
app-page-tur...dev.js gzip327 kB327 kB✓
app-page-tur..prod.js gzip177 kB177 kB✓
app-page.run...dev.js gzip328 kB328 kB✓
app-page.run..prod.js gzip177 kB177 kB✓
app-route-ex...dev.js gzip75.9 kB75.9 kB✓
app-route-ex..prod.js gzip51.6 kB51.6 kB✓
app-route-tu...dev.js gzip75.9 kB75.9 kB✓
app-route-tu..prod.js gzip51.6 kB51.6 kB✓
app-route-tu...dev.js gzip75.5 kB75.5 kB✓
app-route-tu..prod.js gzip51.4 kB51.4 kB✓
app-route.ru...dev.js gzip75.5 kB75.5 kB✓
app-route.ru..prod.js gzip51.4 kB51.4 kB✓
dist_client_...dev.js gzip324 B324 B✓
dist_client_...dev.js gzip326 B326 B✓
dist_client_...dev.js gzip318 B318 B✓
dist_client_...dev.js gzip317 B317 B✓
pages-api-tu...dev.js gzip43.3 kB43.3 kB✓
pages-api-tu..prod.js gzip32.9 kB32.9 kB✓
pages-api.ru...dev.js gzip43.2 kB43.2 kB✓
pages-api.ru..prod.js gzip32.9 kB32.9 kB✓
pages-turbo....dev.js gzip52.6 kB52.6 kB✓
pages-turbo...prod.js gzip38.5 kB38.5 kB✓
pages.runtim...dev.js gzip52.6 kB52.6 kB✓
pages.runtim..prod.js gzip38.5 kB38.5 kB✓
server.runti..prod.js gzip62.4 kB62.4 kB✓
Total2.94 MB2.94 MB⚠️ +7 B
📝 Changed Files (9 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
  • server.runtime.prod.js
View diffs
app-page-exp..ntime.dev.js
failed to diff
app-page-exp..time.prod.js
Diff too large to display
app-page-tur..ntime.dev.js
failed to diff
app-page-tur..time.prod.js
Diff too large to display
app-page-tur..ntime.dev.js
failed to diff
app-page-tur..time.prod.js
Diff too large to display
app-page.runtime.dev.js
failed to diff
app-page.runtime.prod.js
Diff too large to display
server.runtime.prod.js
Diff too large to display
📎 Tarball URL
https://vercel-packages.vercel.app/next/commits/ca344b721ff8e00c44ddb2748f53853088dcc256/next

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[Flight] chunk.reason.error is not a function


2 participants

@nextjs-bot@eps1lon

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Upgrade React from `46103596-20260305` to `5e9eedb5-20260312` by nextjs-bot · Pull Request #91272 · vercel/next.js · GitHub
Skip to content
Upgrade React from 46103596-20260305 to 5e9eedb5-20260312 - #91272
Merged
eps1lon merged 6 commits into
canaryfrom 
update/react/19.3.0-canary-5e9eedb5-20260312
Mar 12, 2026
Merged
Upgrade React from 46103596-20260305 to 5e9eedb5-20260312#91272
eps1lon merged 6 commits into
canaryfrom 
update/react/19.3.0-canary-5e9eedb5-20260312
Conversation
@nextjs-bot
@nextjs-botnextjs-bot
commented
Mar 12, 2026•

edited by unstubbable

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@nextjs-bot
nextjs-bot
requested a review
from eps1lonMarch 12, 2026 18:31
@eps1lon
eps1lon
enabled auto-merge (squash)
March 12, 2026 18:35
@nextjs-bot
nextjs-bot
commented
Mar 12, 2026

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ContributorAuthor
Failing test suites 
Commit: 0e19f81 | About building and testing Next.js
pnpm test-start-turbo test/production/deterministic-build/deployment-id.test.ts (turbopack) (job)
  • deterministic build - changing deployment id > build output API - standard builder > should produce identical build outputs even when changing deployment id (DD)
Expand output
● deterministic build - changing deployment id › build output API - standard builder › should produce identical build outputs even when changing deployment id
thrown: "Exceeded timeout of 60000 ms for a test.
Add a timeout value to this test to increase the timeout, if this is a long-running test. See https://jestjs.io/docs/api#testname-fn-timeout."
50 | }
51 |
> 52 | const result = Reflect.apply(target, thisArg, args)
| ^
53 | return typeof result === 'function' ? wrapJestTestFn(result) : result
54 | },
55 | get(target, prop, receiver) {
at Object.apply (lib/e2e-utils/index.ts:52:30)
at it (production/deterministic-build/deployment-id.test.ts:261:7)
at Array.forEach (<anonymous>)
at production/deterministic-build/deployment-id.test.ts:233:6
at Object.<anonymous> (production/deterministic-build/deployment-id.test.ts:207:58)

@nextjs-bot
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Mar 12, 2026

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ContributorAuthor
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
MetricCanaryPRChangeTrend
Cold (Listen)456ms456ms✓▁█▁▁▁
Cold (Ready in log)445ms449ms✓▂▇▁▁▁
Cold (First Request)910ms913ms✓▃▇▃▂▃
Warm (Listen)456ms455ms✓▁█▁▁▁
Warm (Ready in log)446ms443ms✓▁▇▁▁▁
Warm (First Request)355ms353ms✓▁▇▂▁▁
📦 Dev Server (Webpack) (Legacy)
📦 Dev Server (Webpack)
MetricCanaryPRChangeTrend
Cold (Listen)456ms455ms✓▁▁▁▁▁
Cold (Ready in log)438ms439ms✓▁▆█▆▆
Cold (First Request)1.951s1.962s✓▁▃▇▄▃
Warm (Listen)456ms456ms✓▁▁█▁▁
Warm (Ready in log)437ms438ms✓▁▆█▆▆
Warm (First Request)1.950s1.968s✓▁▃▅▃▃
⚡ Production Builds
MetricCanaryPRChangeTrend
Fresh Build4.286s4.293s✓▁▇▁▂▁
Cached Build4.296s4.248s✓▁▆▁▂▁
📦 Production Builds (Webpack) (Legacy)
📦 Production Builds (Webpack)
MetricCanaryPRChangeTrend
Fresh Build14.272s14.286s✓▁▂▅▁▁
Cached Build14.384s14.402s✓▁▂▅▁▁
node_modules Size481 MB481 MB✓█████
📦 Bundle Sizes
Bundle Sizes
⚡ Turbopack
Client
Main Bundles: **408 kB** → **408 kB** ⚠️ +67 B
80 files with content-based hashes (individual files not comparable between builds)
Server
Middleware
CanaryPRChange
middleware-b..fest.js gzip771 B764 B✓
Total771 B764 B✅ -7 B
Build Details
Build Manifests
CanaryPRChange
_buildManifest.js gzip450 B450 B✓
Total450 B450 B✓
📦 Webpack
Client
Main Bundles
CanaryPRChange
5528-HASH.js gzip5.54 kBN/A-
6280-HASH.js gzip59.6 kBN/A-
6335.HASH.js gzip169 BN/A-
912-HASH.js gzip4.59 kBN/A-
e8aec2e4-HASH.js gzip62.6 kBN/A-
framework-HASH.js gzip59.7 kB59.7 kB✓
main-app-HASH.js gzip256 B255 B✓
main-HASH.js gzip39.2 kB39.2 kB✓
webpack-HASH.js gzip1.68 kB1.68 kB✓
262-HASH.js gzipN/A4.59 kB-
2889.HASH.js gzipN/A169 B-
5602-HASH.js gzipN/A5.55 kB-
6948ada0-HASH.js gzipN/A62.7 kB-
9544-HASH.js gzipN/A60.4 kB-
Total233 kB234 kB⚠️ +823 B
Polyfills
CanaryPRChange
polyfills-HASH.js gzip39.4 kB39.4 kB✓
Total39.4 kB39.4 kB✓
Pages
CanaryPRChange
_app-HASH.js gzip194 B194 B✓
_error-HASH.js gzip183 B180 B🟢 3 B (-2%)
css-HASH.js gzip331 B330 B✓
dynamic-HASH.js gzip1.81 kB1.81 kB✓
edge-ssr-HASH.js gzip256 B256 B✓
head-HASH.js gzip351 B352 B✓
hooks-HASH.js gzip384 B383 B✓
image-HASH.js gzip580 B581 B✓
index-HASH.js gzip260 B260 B✓
link-HASH.js gzip2.51 kB2.51 kB✓
routerDirect..HASH.js gzip320 B319 B✓
script-HASH.js gzip386 B386 B✓
withRouter-HASH.js gzip315 B315 B✓
1afbb74e6ecf..834.css gzip106 B106 B✓
Total7.98 kB7.98 kB✅ -1 B
Server
Edge SSR
CanaryPRChange
edge-ssr.js gzip125 kB125 kB✓
page.js gzip266 kB266 kB✓
Total391 kB391 kB⚠️ +239 B
Middleware
CanaryPRChange
middleware-b..fest.js gzip617 B615 B✓
middleware-r..fest.js gzip156 B155 B✓
middleware.js gzip43.6 kB43.9 kB✓
edge-runtime..pack.js gzip842 B842 B✓
Total45.2 kB45.5 kB⚠️ +298 B
Build Details
Build Manifests
CanaryPRChange
_buildManifest.js gzip715 B718 B✓
Total715 B718 B⚠️ +3 B
Build Cache
CanaryPRChange
0.pack gzip4.2 MB4.19 MB🟢 5.67 kB (0%)
index.pack gzip108 kB107 kB✓
index.pack.old gzip108 kB107 kB✓
Total4.41 MB4.4 MB✅ -6.59 kB
🔄 Shared (bundler-independent)
Runtimes
CanaryPRChange
app-page-exp...dev.js gzip331 kB331 kB✓
app-page-exp..prod.js gzip179 kB179 kB✓
app-page-tur...dev.js gzip331 kB331 kB✓
app-page-tur..prod.js gzip179 kB179 kB✓
app-page-tur...dev.js gzip327 kB327 kB✓
app-page-tur..prod.js gzip177 kB177 kB✓
app-page.run...dev.js gzip328 kB328 kB✓
app-page.run..prod.js gzip177 kB177 kB✓
app-route-ex...dev.js gzip75.9 kB75.9 kB✓
app-route-ex..prod.js gzip51.6 kB51.6 kB✓
app-route-tu...dev.js gzip75.9 kB75.9 kB✓
app-route-tu..prod.js gzip51.6 kB51.6 kB✓
app-route-tu...dev.js gzip75.5 kB75.5 kB✓
app-route-tu..prod.js gzip51.4 kB51.4 kB✓
app-route.ru...dev.js gzip75.5 kB75.5 kB✓
app-route.ru..prod.js gzip51.4 kB51.4 kB✓
dist_client_...dev.js gzip324 B324 B✓
dist_client_...dev.js gzip326 B326 B✓
dist_client_...dev.js gzip318 B318 B✓
dist_client_...dev.js gzip317 B317 B✓
pages-api-tu...dev.js gzip43.3 kB43.3 kB✓
pages-api-tu..prod.js gzip32.9 kB32.9 kB✓
pages-api.ru...dev.js gzip43.2 kB43.2 kB✓
pages-api.ru..prod.js gzip32.9 kB32.9 kB✓
pages-turbo....dev.js gzip52.6 kB52.6 kB✓
pages-turbo...prod.js gzip38.5 kB38.5 kB✓
pages.runtim...dev.js gzip52.6 kB52.6 kB✓
pages.runtim..prod.js gzip38.5 kB38.5 kB✓
server.runti..prod.js gzip62.4 kB62.4 kB✓
Total2.94 MB2.94 MB⚠️ +7 B
📝 Changed Files (9 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
  • server.runtime.prod.js
View diffs
app-page-exp..ntime.dev.js
failed to diff
app-page-exp..time.prod.js
Diff too large to display
app-page-tur..ntime.dev.js
failed to diff
app-page-tur..time.prod.js
Diff too large to display
app-page-tur..ntime.dev.js
failed to diff
app-page-tur..time.prod.js
Diff too large to display
app-page.runtime.dev.js
failed to diff
app-page.runtime.prod.js
Diff too large to display
server.runtime.prod.js
Diff too large to display
📎 Tarball URL
https://vercel-packages.vercel.app/next/commits/ca344b721ff8e00c44ddb2748f53853088dcc256/next

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canaryMar 12, 2026

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[Flight] chunk.reason.error is not a function


2 participants

@nextjs-bot@eps1lon

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
Upgrade React from `46103596-20260305` to `5e9eedb5-20260312` by nextjs-bot · Pull Request #91272 · vercel/next.js · GitHub
Skip to content
Upgrade React from 46103596-20260305 to 5e9eedb5-20260312 - #91272
Merged
eps1lon merged 6 commits into
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update/react/19.3.0-canary-5e9eedb5-20260312
Mar 12, 2026
Merged
Upgrade React from 46103596-20260305 to 5e9eedb5-20260312#91272
eps1lon merged 6 commits into
canaryfrom 
update/react/19.3.0-canary-5e9eedb5-20260312
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Mar 12, 2026•

edited by unstubbable

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requested a review
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enabled auto-merge (squash)
March 12, 2026 18:35
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Mar 12, 2026

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Failing test suites 
Commit: 0e19f81 | About building and testing Next.js
pnpm test-start-turbo test/production/deterministic-build/deployment-id.test.ts (turbopack) (job)
  • deterministic build - changing deployment id > build output API - standard builder > should produce identical build outputs even when changing deployment id (DD)
Expand output
● deterministic build - changing deployment id › build output API - standard builder › should produce identical build outputs even when changing deployment id
thrown: "Exceeded timeout of 60000 ms for a test.
Add a timeout value to this test to increase the timeout, if this is a long-running test. See https://jestjs.io/docs/api#testname-fn-timeout."
50 | }
51 |
> 52 | const result = Reflect.apply(target, thisArg, args)
| ^
53 | return typeof result === 'function' ? wrapJestTestFn(result) : result
54 | },
55 | get(target, prop, receiver) {
at Object.apply (lib/e2e-utils/index.ts:52:30)
at it (production/deterministic-build/deployment-id.test.ts:261:7)
at Array.forEach (<anonymous>)
at production/deterministic-build/deployment-id.test.ts:233:6
at Object.<anonymous> (production/deterministic-build/deployment-id.test.ts:207:58)

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Mar 12, 2026

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ContributorAuthor
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
MetricCanaryPRChangeTrend
Cold (Listen)456ms456ms✓▁█▁▁▁
Cold (Ready in log)445ms449ms✓▂▇▁▁▁
Cold (First Request)910ms913ms✓▃▇▃▂▃
Warm (Listen)456ms455ms✓▁█▁▁▁
Warm (Ready in log)446ms443ms✓▁▇▁▁▁
Warm (First Request)355ms353ms✓▁▇▂▁▁
📦 Dev Server (Webpack) (Legacy)
📦 Dev Server (Webpack)
MetricCanaryPRChangeTrend
Cold (Listen)456ms455ms✓▁▁▁▁▁
Cold (Ready in log)438ms439ms✓▁▆█▆▆
Cold (First Request)1.951s1.962s✓▁▃▇▄▃
Warm (Listen)456ms456ms✓▁▁█▁▁
Warm (Ready in log)437ms438ms✓▁▆█▆▆
Warm (First Request)1.950s1.968s✓▁▃▅▃▃
⚡ Production Builds
MetricCanaryPRChangeTrend
Fresh Build4.286s4.293s✓▁▇▁▂▁
Cached Build4.296s4.248s✓▁▆▁▂▁
📦 Production Builds (Webpack) (Legacy)
📦 Production Builds (Webpack)
MetricCanaryPRChangeTrend
Fresh Build14.272s14.286s✓▁▂▅▁▁
Cached Build14.384s14.402s✓▁▂▅▁▁
node_modules Size481 MB481 MB✓█████
📦 Bundle Sizes
Bundle Sizes
⚡ Turbopack
Client
Main Bundles: **408 kB** → **408 kB** ⚠️ +67 B
80 files with content-based hashes (individual files not comparable between builds)
Server
Middleware
CanaryPRChange
middleware-b..fest.js gzip771 B764 B✓
Total771 B764 B✅ -7 B
Build Details
Build Manifests
CanaryPRChange
_buildManifest.js gzip450 B450 B✓
Total450 B450 B✓
📦 Webpack
Client
Main Bundles
CanaryPRChange
5528-HASH.js gzip5.54 kBN/A-
6280-HASH.js gzip59.6 kBN/A-
6335.HASH.js gzip169 BN/A-
912-HASH.js gzip4.59 kBN/A-
e8aec2e4-HASH.js gzip62.6 kBN/A-
framework-HASH.js gzip59.7 kB59.7 kB✓
main-app-HASH.js gzip256 B255 B✓
main-HASH.js gzip39.2 kB39.2 kB✓
webpack-HASH.js gzip1.68 kB1.68 kB✓
262-HASH.js gzipN/A4.59 kB-
2889.HASH.js gzipN/A169 B-
5602-HASH.js gzipN/A5.55 kB-
6948ada0-HASH.js gzipN/A62.7 kB-
9544-HASH.js gzipN/A60.4 kB-
Total233 kB234 kB⚠️ +823 B
Polyfills
CanaryPRChange
polyfills-HASH.js gzip39.4 kB39.4 kB✓
Total39.4 kB39.4 kB✓
Pages
CanaryPRChange
_app-HASH.js gzip194 B194 B✓
_error-HASH.js gzip183 B180 B🟢 3 B (-2%)
css-HASH.js gzip331 B330 B✓
dynamic-HASH.js gzip1.81 kB1.81 kB✓
edge-ssr-HASH.js gzip256 B256 B✓
head-HASH.js gzip351 B352 B✓
hooks-HASH.js gzip384 B383 B✓
image-HASH.js gzip580 B581 B✓
index-HASH.js gzip260 B260 B✓
link-HASH.js gzip2.51 kB2.51 kB✓
routerDirect..HASH.js gzip320 B319 B✓
script-HASH.js gzip386 B386 B✓
withRouter-HASH.js gzip315 B315 B✓
1afbb74e6ecf..834.css gzip106 B106 B✓
Total7.98 kB7.98 kB✅ -1 B
Server
Edge SSR
CanaryPRChange
edge-ssr.js gzip125 kB125 kB✓
page.js gzip266 kB266 kB✓
Total391 kB391 kB⚠️ +239 B
Middleware
CanaryPRChange
middleware-b..fest.js gzip617 B615 B✓
middleware-r..fest.js gzip156 B155 B✓
middleware.js gzip43.6 kB43.9 kB✓
edge-runtime..pack.js gzip842 B842 B✓
Total45.2 kB45.5 kB⚠️ +298 B
Build Details
Build Manifests
CanaryPRChange
_buildManifest.js gzip715 B718 B✓
Total715 B718 B⚠️ +3 B
Build Cache
CanaryPRChange
0.pack gzip4.2 MB4.19 MB🟢 5.67 kB (0%)
index.pack gzip108 kB107 kB✓
index.pack.old gzip108 kB107 kB✓
Total4.41 MB4.4 MB✅ -6.59 kB
🔄 Shared (bundler-independent)
Runtimes
CanaryPRChange
app-page-exp...dev.js gzip331 kB331 kB✓
app-page-exp..prod.js gzip179 kB179 kB✓
app-page-tur...dev.js gzip331 kB331 kB✓
app-page-tur..prod.js gzip179 kB179 kB✓
app-page-tur...dev.js gzip327 kB327 kB✓
app-page-tur..prod.js gzip177 kB177 kB✓
app-page.run...dev.js gzip328 kB328 kB✓
app-page.run..prod.js gzip177 kB177 kB✓
app-route-ex...dev.js gzip75.9 kB75.9 kB✓
app-route-ex..prod.js gzip51.6 kB51.6 kB✓
app-route-tu...dev.js gzip75.9 kB75.9 kB✓
app-route-tu..prod.js gzip51.6 kB51.6 kB✓
app-route-tu...dev.js gzip75.5 kB75.5 kB✓
app-route-tu..prod.js gzip51.4 kB51.4 kB✓
app-route.ru...dev.js gzip75.5 kB75.5 kB✓
app-route.ru..prod.js gzip51.4 kB51.4 kB✓
dist_client_...dev.js gzip324 B324 B✓
dist_client_...dev.js gzip326 B326 B✓
dist_client_...dev.js gzip318 B318 B✓
dist_client_...dev.js gzip317 B317 B✓
pages-api-tu...dev.js gzip43.3 kB43.3 kB✓
pages-api-tu..prod.js gzip32.9 kB32.9 kB✓
pages-api.ru...dev.js gzip43.2 kB43.2 kB✓
pages-api.ru..prod.js gzip32.9 kB32.9 kB✓
pages-turbo....dev.js gzip52.6 kB52.6 kB✓
pages-turbo...prod.js gzip38.5 kB38.5 kB✓
pages.runtim...dev.js gzip52.6 kB52.6 kB✓
pages.runtim..prod.js gzip38.5 kB38.5 kB✓
server.runti..prod.js gzip62.4 kB62.4 kB✓
Total2.94 MB2.94 MB⚠️ +7 B
📝 Changed Files (9 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
  • server.runtime.prod.js
View diffs
app-page-exp..ntime.dev.js
failed to diff
app-page-exp..time.prod.js
Diff too large to display
app-page-tur..ntime.dev.js
failed to diff
app-page-tur..time.prod.js
Diff too large to display
app-page-tur..ntime.dev.js
failed to diff
app-page-tur..time.prod.js
Diff too large to display
app-page.runtime.dev.js
failed to diff
app-page.runtime.prod.js
Diff too large to display
server.runtime.prod.js
Diff too large to display
📎 Tarball URL
https://vercel-packages.vercel.app/next/commits/ca344b721ff8e00c44ddb2748f53853088dcc256/next

@eps1lon
eps1lon
merged commit bd04a07
into
canaryMar 12, 2026

284 of 287 checks passed

@eps1lon
eps1lon
deleted the

update/react/19.3.0-canary-5e9eedb5-20260312

branch
March 12, 2026 19:27
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Mar 27, 2026
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[Flight] chunk.reason.error is not a function


2 participants

@nextjs-bot@eps1lon

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Upgrade React from `46103596-20260305` to `5e9eedb5-20260312` by nextjs-bot · Pull Request #91272 · vercel/next.js · GitHub
Skip to content
Upgrade React from 46103596-20260305 to 5e9eedb5-20260312 - #91272
Merged
eps1lon merged 6 commits into
canaryfrom 
update/react/19.3.0-canary-5e9eedb5-20260312
Mar 12, 2026
Merged
Upgrade React from 46103596-20260305 to 5e9eedb5-20260312#91272
eps1lon merged 6 commits into
canaryfrom 
update/react/19.3.0-canary-5e9eedb5-20260312
Conversation
@nextjs-bot
@nextjs-botnextjs-bot
commented
Mar 12, 2026•

edited by unstubbable

Loading

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Contributor
@nextjs-bot
nextjs-bot
requested a review
from eps1lonMarch 12, 2026 18:31
@eps1lon
eps1lon
enabled auto-merge (squash)
March 12, 2026 18:35
@nextjs-bot
nextjs-bot
commented
Mar 12, 2026

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ContributorAuthor
Failing test suites 
Commit: 0e19f81 | About building and testing Next.js
pnpm test-start-turbo test/production/deterministic-build/deployment-id.test.ts (turbopack) (job)
  • deterministic build - changing deployment id > build output API - standard builder > should produce identical build outputs even when changing deployment id (DD)
Expand output
● deterministic build - changing deployment id › build output API - standard builder › should produce identical build outputs even when changing deployment id
thrown: "Exceeded timeout of 60000 ms for a test.
Add a timeout value to this test to increase the timeout, if this is a long-running test. See https://jestjs.io/docs/api#testname-fn-timeout."
50 | }
51 |
> 52 | const result = Reflect.apply(target, thisArg, args)
| ^
53 | return typeof result === 'function' ? wrapJestTestFn(result) : result
54 | },
55 | get(target, prop, receiver) {
at Object.apply (lib/e2e-utils/index.ts:52:30)
at it (production/deterministic-build/deployment-id.test.ts:261:7)
at Array.forEach (<anonymous>)
at production/deterministic-build/deployment-id.test.ts:233:6
at Object.<anonymous> (production/deterministic-build/deployment-id.test.ts:207:58)

@nextjs-bot
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Mar 12, 2026

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ContributorAuthor
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
MetricCanaryPRChangeTrend
Cold (Listen)456ms456ms✓▁█▁▁▁
Cold (Ready in log)445ms449ms✓▂▇▁▁▁
Cold (First Request)910ms913ms✓▃▇▃▂▃
Warm (Listen)456ms455ms✓▁█▁▁▁
Warm (Ready in log)446ms443ms✓▁▇▁▁▁
Warm (First Request)355ms353ms✓▁▇▂▁▁
📦 Dev Server (Webpack) (Legacy)
📦 Dev Server (Webpack)
MetricCanaryPRChangeTrend
Cold (Listen)456ms455ms✓▁▁▁▁▁
Cold (Ready in log)438ms439ms✓▁▆█▆▆
Cold (First Request)1.951s1.962s✓▁▃▇▄▃
Warm (Listen)456ms456ms✓▁▁█▁▁
Warm (Ready in log)437ms438ms✓▁▆█▆▆
Warm (First Request)1.950s1.968s✓▁▃▅▃▃
⚡ Production Builds
MetricCanaryPRChangeTrend
Fresh Build4.286s4.293s✓▁▇▁▂▁
Cached Build4.296s4.248s✓▁▆▁▂▁
📦 Production Builds (Webpack) (Legacy)
📦 Production Builds (Webpack)
MetricCanaryPRChangeTrend
Fresh Build14.272s14.286s✓▁▂▅▁▁
Cached Build14.384s14.402s✓▁▂▅▁▁
node_modules Size481 MB481 MB✓█████
📦 Bundle Sizes
Bundle Sizes
⚡ Turbopack
Client
Main Bundles: **408 kB** → **408 kB** ⚠️ +67 B
80 files with content-based hashes (individual files not comparable between builds)
Server
Middleware
CanaryPRChange
middleware-b..fest.js gzip771 B764 B✓
Total771 B764 B✅ -7 B
Build Details
Build Manifests
CanaryPRChange
_buildManifest.js gzip450 B450 B✓
Total450 B450 B✓
📦 Webpack
Client
Main Bundles
CanaryPRChange
5528-HASH.js gzip5.54 kBN/A-
6280-HASH.js gzip59.6 kBN/A-
6335.HASH.js gzip169 BN/A-
912-HASH.js gzip4.59 kBN/A-
e8aec2e4-HASH.js gzip62.6 kBN/A-
framework-HASH.js gzip59.7 kB59.7 kB✓
main-app-HASH.js gzip256 B255 B✓
main-HASH.js gzip39.2 kB39.2 kB✓
webpack-HASH.js gzip1.68 kB1.68 kB✓
262-HASH.js gzipN/A4.59 kB-
2889.HASH.js gzipN/A169 B-
5602-HASH.js gzipN/A5.55 kB-
6948ada0-HASH.js gzipN/A62.7 kB-
9544-HASH.js gzipN/A60.4 kB-
Total233 kB234 kB⚠️ +823 B
Polyfills
CanaryPRChange
polyfills-HASH.js gzip39.4 kB39.4 kB✓
Total39.4 kB39.4 kB✓
Pages
CanaryPRChange
_app-HASH.js gzip194 B194 B✓
_error-HASH.js gzip183 B180 B🟢 3 B (-2%)
css-HASH.js gzip331 B330 B✓
dynamic-HASH.js gzip1.81 kB1.81 kB✓
edge-ssr-HASH.js gzip256 B256 B✓
head-HASH.js gzip351 B352 B✓
hooks-HASH.js gzip384 B383 B✓
image-HASH.js gzip580 B581 B✓
index-HASH.js gzip260 B260 B✓
link-HASH.js gzip2.51 kB2.51 kB✓
routerDirect..HASH.js gzip320 B319 B✓
script-HASH.js gzip386 B386 B✓
withRouter-HASH.js gzip315 B315 B✓
1afbb74e6ecf..834.css gzip106 B106 B✓
Total7.98 kB7.98 kB✅ -1 B
Server
Edge SSR
CanaryPRChange
edge-ssr.js gzip125 kB125 kB✓
page.js gzip266 kB266 kB✓
Total391 kB391 kB⚠️ +239 B
Middleware
CanaryPRChange
middleware-b..fest.js gzip617 B615 B✓
middleware-r..fest.js gzip156 B155 B✓
middleware.js gzip43.6 kB43.9 kB✓
edge-runtime..pack.js gzip842 B842 B✓
Total45.2 kB45.5 kB⚠️ +298 B
Build Details
Build Manifests
CanaryPRChange
_buildManifest.js gzip715 B718 B✓
Total715 B718 B⚠️ +3 B
Build Cache
CanaryPRChange
0.pack gzip4.2 MB4.19 MB🟢 5.67 kB (0%)
index.pack gzip108 kB107 kB✓
index.pack.old gzip108 kB107 kB✓
Total4.41 MB4.4 MB✅ -6.59 kB
🔄 Shared (bundler-independent)
Runtimes
CanaryPRChange
app-page-exp...dev.js gzip331 kB331 kB✓
app-page-exp..prod.js gzip179 kB179 kB✓
app-page-tur...dev.js gzip331 kB331 kB✓
app-page-tur..prod.js gzip179 kB179 kB✓
app-page-tur...dev.js gzip327 kB327 kB✓
app-page-tur..prod.js gzip177 kB177 kB✓
app-page.run...dev.js gzip328 kB328 kB✓
app-page.run..prod.js gzip177 kB177 kB✓
app-route-ex...dev.js gzip75.9 kB75.9 kB✓
app-route-ex..prod.js gzip51.6 kB51.6 kB✓
app-route-tu...dev.js gzip75.9 kB75.9 kB✓
app-route-tu..prod.js gzip51.6 kB51.6 kB✓
app-route-tu...dev.js gzip75.5 kB75.5 kB✓
app-route-tu..prod.js gzip51.4 kB51.4 kB✓
app-route.ru...dev.js gzip75.5 kB75.5 kB✓
app-route.ru..prod.js gzip51.4 kB51.4 kB✓
dist_client_...dev.js gzip324 B324 B✓
dist_client_...dev.js gzip326 B326 B✓
dist_client_...dev.js gzip318 B318 B✓
dist_client_...dev.js gzip317 B317 B✓
pages-api-tu...dev.js gzip43.3 kB43.3 kB✓
pages-api-tu..prod.js gzip32.9 kB32.9 kB✓
pages-api.ru...dev.js gzip43.2 kB43.2 kB✓
pages-api.ru..prod.js gzip32.9 kB32.9 kB✓
pages-turbo....dev.js gzip52.6 kB52.6 kB✓
pages-turbo...prod.js gzip38.5 kB38.5 kB✓
pages.runtim...dev.js gzip52.6 kB52.6 kB✓
pages.runtim..prod.js gzip38.5 kB38.5 kB✓
server.runti..prod.js gzip62.4 kB62.4 kB✓
Total2.94 MB2.94 MB⚠️ +7 B
📝 Changed Files (9 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
  • server.runtime.prod.js
View diffs
app-page-exp..ntime.dev.js
failed to diff
app-page-exp..time.prod.js
Diff too large to display
app-page-tur..ntime.dev.js
failed to diff
app-page-tur..time.prod.js
Diff too large to display
app-page-tur..ntime.dev.js
failed to diff
app-page-tur..time.prod.js
Diff too large to display
app-page.runtime.dev.js
failed to diff
app-page.runtime.prod.js
Diff too large to display
server.runtime.prod.js
Diff too large to display
📎 Tarball URL
https://vercel-packages.vercel.app/next/commits/ca344b721ff8e00c44ddb2748f53853088dcc256/next

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merged commit bd04a07
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canaryMar 12, 2026

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[Flight] chunk.reason.error is not a function


2 participants

@nextjs-bot@eps1lon

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Upgrade React from `46103596-20260305` to `5e9eedb5-20260312` by nextjs-bot · Pull Request #91272 · vercel/next.js · GitHub
Skip to content
Upgrade React from 46103596-20260305 to 5e9eedb5-20260312 - #91272
Merged
eps1lon merged 6 commits into
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update/react/19.3.0-canary-5e9eedb5-20260312
Mar 12, 2026
Merged
Upgrade React from 46103596-20260305 to 5e9eedb5-20260312#91272
eps1lon merged 6 commits into
canaryfrom 
update/react/19.3.0-canary-5e9eedb5-20260312
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Mar 12, 2026•

edited by unstubbable

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enabled auto-merge (squash)
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Failing test suites 
Commit: 0e19f81 | About building and testing Next.js
pnpm test-start-turbo test/production/deterministic-build/deployment-id.test.ts (turbopack) (job)
  • deterministic build - changing deployment id > build output API - standard builder > should produce identical build outputs even when changing deployment id (DD)
Expand output
● deterministic build - changing deployment id › build output API - standard builder › should produce identical build outputs even when changing deployment id
thrown: "Exceeded timeout of 60000 ms for a test.
Add a timeout value to this test to increase the timeout, if this is a long-running test. See https://jestjs.io/docs/api#testname-fn-timeout."
50 | }
51 |
> 52 | const result = Reflect.apply(target, thisArg, args)
| ^
53 | return typeof result === 'function' ? wrapJestTestFn(result) : result
54 | },
55 | get(target, prop, receiver) {
at Object.apply (lib/e2e-utils/index.ts:52:30)
at it (production/deterministic-build/deployment-id.test.ts:261:7)
at Array.forEach (<anonymous>)
at production/deterministic-build/deployment-id.test.ts:233:6
at Object.<anonymous> (production/deterministic-build/deployment-id.test.ts:207:58)

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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
MetricCanaryPRChangeTrend
Cold (Listen)456ms456ms✓▁█▁▁▁
Cold (Ready in log)445ms449ms✓▂▇▁▁▁
Cold (First Request)910ms913ms✓▃▇▃▂▃
Warm (Listen)456ms455ms✓▁█▁▁▁
Warm (Ready in log)446ms443ms✓▁▇▁▁▁
Warm (First Request)355ms353ms✓▁▇▂▁▁
📦 Dev Server (Webpack) (Legacy)
📦 Dev Server (Webpack)
MetricCanaryPRChangeTrend
Cold (Listen)456ms455ms✓▁▁▁▁▁
Cold (Ready in log)438ms439ms✓▁▆█▆▆
Cold (First Request)1.951s1.962s✓▁▃▇▄▃
Warm (Listen)456ms456ms✓▁▁█▁▁
Warm (Ready in log)437ms438ms✓▁▆█▆▆
Warm (First Request)1.950s1.968s✓▁▃▅▃▃
⚡ Production Builds
MetricCanaryPRChangeTrend
Fresh Build4.286s4.293s✓▁▇▁▂▁
Cached Build4.296s4.248s✓▁▆▁▂▁
📦 Production Builds (Webpack) (Legacy)
📦 Production Builds (Webpack)
MetricCanaryPRChangeTrend
Fresh Build14.272s14.286s✓▁▂▅▁▁
Cached Build14.384s14.402s✓▁▂▅▁▁
node_modules Size481 MB481 MB✓█████
📦 Bundle Sizes
Bundle Sizes
⚡ Turbopack
Client
Main Bundles: **408 kB** → **408 kB** ⚠️ +67 B
80 files with content-based hashes (individual files not comparable between builds)
Server
Middleware
CanaryPRChange
middleware-b..fest.js gzip771 B764 B✓
Total771 B764 B✅ -7 B
Build Details
Build Manifests
CanaryPRChange
_buildManifest.js gzip450 B450 B✓
Total450 B450 B✓
📦 Webpack
Client
Main Bundles
CanaryPRChange
5528-HASH.js gzip5.54 kBN/A-
6280-HASH.js gzip59.6 kBN/A-
6335.HASH.js gzip169 BN/A-
912-HASH.js gzip4.59 kBN/A-
e8aec2e4-HASH.js gzip62.6 kBN/A-
framework-HASH.js gzip59.7 kB59.7 kB✓
main-app-HASH.js gzip256 B255 B✓
main-HASH.js gzip39.2 kB39.2 kB✓
webpack-HASH.js gzip1.68 kB1.68 kB✓
262-HASH.js gzipN/A4.59 kB-
2889.HASH.js gzipN/A169 B-
5602-HASH.js gzipN/A5.55 kB-
6948ada0-HASH.js gzipN/A62.7 kB-
9544-HASH.js gzipN/A60.4 kB-
Total233 kB234 kB⚠️ +823 B
Polyfills
CanaryPRChange
polyfills-HASH.js gzip39.4 kB39.4 kB✓
Total39.4 kB39.4 kB✓
Pages
CanaryPRChange
_app-HASH.js gzip194 B194 B✓
_error-HASH.js gzip183 B180 B🟢 3 B (-2%)
css-HASH.js gzip331 B330 B✓
dynamic-HASH.js gzip1.81 kB1.81 kB✓
edge-ssr-HASH.js gzip256 B256 B✓
head-HASH.js gzip351 B352 B✓
hooks-HASH.js gzip384 B383 B✓
image-HASH.js gzip580 B581 B✓
index-HASH.js gzip260 B260 B✓
link-HASH.js gzip2.51 kB2.51 kB✓
routerDirect..HASH.js gzip320 B319 B✓
script-HASH.js gzip386 B386 B✓
withRouter-HASH.js gzip315 B315 B✓
1afbb74e6ecf..834.css gzip106 B106 B✓
Total7.98 kB7.98 kB✅ -1 B
Server
Edge SSR
CanaryPRChange
edge-ssr.js gzip125 kB125 kB✓
page.js gzip266 kB266 kB✓
Total391 kB391 kB⚠️ +239 B
Middleware
CanaryPRChange
middleware-b..fest.js gzip617 B615 B✓
middleware-r..fest.js gzip156 B155 B✓
middleware.js gzip43.6 kB43.9 kB✓
edge-runtime..pack.js gzip842 B842 B✓
Total45.2 kB45.5 kB⚠️ +298 B
Build Details
Build Manifests
CanaryPRChange
_buildManifest.js gzip715 B718 B✓
Total715 B718 B⚠️ +3 B
Build Cache
CanaryPRChange
0.pack gzip4.2 MB4.19 MB🟢 5.67 kB (0%)
index.pack gzip108 kB107 kB✓
index.pack.old gzip108 kB107 kB✓
Total4.41 MB4.4 MB✅ -6.59 kB
🔄 Shared (bundler-independent)
Runtimes
CanaryPRChange
app-page-exp...dev.js gzip331 kB331 kB✓
app-page-exp..prod.js gzip179 kB179 kB✓
app-page-tur...dev.js gzip331 kB331 kB✓
app-page-tur..prod.js gzip179 kB179 kB✓
app-page-tur...dev.js gzip327 kB327 kB✓
app-page-tur..prod.js gzip177 kB177 kB✓
app-page.run...dev.js gzip328 kB328 kB✓
app-page.run..prod.js gzip177 kB177 kB✓
app-route-ex...dev.js gzip75.9 kB75.9 kB✓
app-route-ex..prod.js gzip51.6 kB51.6 kB✓
app-route-tu...dev.js gzip75.9 kB75.9 kB✓
app-route-tu..prod.js gzip51.6 kB51.6 kB✓
app-route-tu...dev.js gzip75.5 kB75.5 kB✓
app-route-tu..prod.js gzip51.4 kB51.4 kB✓
app-route.ru...dev.js gzip75.5 kB75.5 kB✓
app-route.ru..prod.js gzip51.4 kB51.4 kB✓
dist_client_...dev.js gzip324 B324 B✓
dist_client_...dev.js gzip326 B326 B✓
dist_client_...dev.js gzip318 B318 B✓
dist_client_...dev.js gzip317 B317 B✓
pages-api-tu...dev.js gzip43.3 kB43.3 kB✓
pages-api-tu..prod.js gzip32.9 kB32.9 kB✓
pages-api.ru...dev.js gzip43.2 kB43.2 kB✓
pages-api.ru..prod.js gzip32.9 kB32.9 kB✓
pages-turbo....dev.js gzip52.6 kB52.6 kB✓
pages-turbo...prod.js gzip38.5 kB38.5 kB✓
pages.runtim...dev.js gzip52.6 kB52.6 kB✓
pages.runtim..prod.js gzip38.5 kB38.5 kB✓
server.runti..prod.js gzip62.4 kB62.4 kB✓
Total2.94 MB2.94 MB⚠️ +7 B
📝 Changed Files (9 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
  • server.runtime.prod.js
View diffs
app-page-exp..ntime.dev.js
failed to diff
app-page-exp..time.prod.js
Diff too large to display
app-page-tur..ntime.dev.js
failed to diff
app-page-tur..time.prod.js
Diff too large to display
app-page-tur..ntime.dev.js
failed to diff
app-page-tur..time.prod.js
Diff too large to display
app-page.runtime.dev.js
failed to diff
app-page.runtime.prod.js
Diff too large to display
server.runtime.prod.js
Diff too large to display
📎 Tarball URL
https://vercel-packages.vercel.app/next/commits/ca344b721ff8e00c44ddb2748f53853088dcc256/next

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merged commit bd04a07
into
canaryMar 12, 2026

284 of 287 checks passed

@eps1lon
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deleted the

update/react/19.3.0-canary-5e9eedb5-20260312

branch
March 12, 2026 19:27
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[Flight] chunk.reason.error is not a function


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@nextjs-bot@eps1lon

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
Upgrade React from `46103596-20260305` to `5e9eedb5-20260312` by nextjs-bot · Pull Request #91272 · vercel/next.js · GitHub
Skip to content
Upgrade React from 46103596-20260305 to 5e9eedb5-20260312 - #91272
Merged
eps1lon merged 6 commits into
canaryfrom 
update/react/19.3.0-canary-5e9eedb5-20260312
Mar 12, 2026
Merged
Upgrade React from 46103596-20260305 to 5e9eedb5-20260312#91272
eps1lon merged 6 commits into
canaryfrom 
update/react/19.3.0-canary-5e9eedb5-20260312
Conversation
@nextjs-bot
@nextjs-botnextjs-bot
commented
Mar 12, 2026•

edited by unstubbable

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@nextjs-bot
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requested a review
from eps1lonMarch 12, 2026 18:31
@eps1lon
eps1lon
enabled auto-merge (squash)
March 12, 2026 18:35
@nextjs-bot
nextjs-bot
commented
Mar 12, 2026

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ContributorAuthor
Failing test suites 
Commit: 0e19f81 | About building and testing Next.js
pnpm test-start-turbo test/production/deterministic-build/deployment-id.test.ts (turbopack) (job)
  • deterministic build - changing deployment id > build output API - standard builder > should produce identical build outputs even when changing deployment id (DD)
Expand output
● deterministic build - changing deployment id › build output API - standard builder › should produce identical build outputs even when changing deployment id
thrown: "Exceeded timeout of 60000 ms for a test.
Add a timeout value to this test to increase the timeout, if this is a long-running test. See https://jestjs.io/docs/api#testname-fn-timeout."
50 | }
51 |
> 52 | const result = Reflect.apply(target, thisArg, args)
| ^
53 | return typeof result === 'function' ? wrapJestTestFn(result) : result
54 | },
55 | get(target, prop, receiver) {
at Object.apply (lib/e2e-utils/index.ts:52:30)
at it (production/deterministic-build/deployment-id.test.ts:261:7)
at Array.forEach (<anonymous>)
at production/deterministic-build/deployment-id.test.ts:233:6
at Object.<anonymous> (production/deterministic-build/deployment-id.test.ts:207:58)

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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
MetricCanaryPRChangeTrend
Cold (Listen)456ms456ms✓▁█▁▁▁
Cold (Ready in log)445ms449ms✓▂▇▁▁▁
Cold (First Request)910ms913ms✓▃▇▃▂▃
Warm (Listen)456ms455ms✓▁█▁▁▁
Warm (Ready in log)446ms443ms✓▁▇▁▁▁
Warm (First Request)355ms353ms✓▁▇▂▁▁
📦 Dev Server (Webpack) (Legacy)
📦 Dev Server (Webpack)
MetricCanaryPRChangeTrend
Cold (Listen)456ms455ms✓▁▁▁▁▁
Cold (Ready in log)438ms439ms✓▁▆█▆▆
Cold (First Request)1.951s1.962s✓▁▃▇▄▃
Warm (Listen)456ms456ms✓▁▁█▁▁
Warm (Ready in log)437ms438ms✓▁▆█▆▆
Warm (First Request)1.950s1.968s✓▁▃▅▃▃
⚡ Production Builds
MetricCanaryPRChangeTrend
Fresh Build4.286s4.293s✓▁▇▁▂▁
Cached Build4.296s4.248s✓▁▆▁▂▁
📦 Production Builds (Webpack) (Legacy)
📦 Production Builds (Webpack)
MetricCanaryPRChangeTrend
Fresh Build14.272s14.286s✓▁▂▅▁▁
Cached Build14.384s14.402s✓▁▂▅▁▁
node_modules Size481 MB481 MB✓█████
📦 Bundle Sizes
Bundle Sizes
⚡ Turbopack
Client
Main Bundles: **408 kB** → **408 kB** ⚠️ +67 B
80 files with content-based hashes (individual files not comparable between builds)
Server
Middleware
CanaryPRChange
middleware-b..fest.js gzip771 B764 B✓
Total771 B764 B✅ -7 B
Build Details
Build Manifests
CanaryPRChange
_buildManifest.js gzip450 B450 B✓
Total450 B450 B✓
📦 Webpack
Client
Main Bundles
CanaryPRChange
5528-HASH.js gzip5.54 kBN/A-
6280-HASH.js gzip59.6 kBN/A-
6335.HASH.js gzip169 BN/A-
912-HASH.js gzip4.59 kBN/A-
e8aec2e4-HASH.js gzip62.6 kBN/A-
framework-HASH.js gzip59.7 kB59.7 kB✓
main-app-HASH.js gzip256 B255 B✓
main-HASH.js gzip39.2 kB39.2 kB✓
webpack-HASH.js gzip1.68 kB1.68 kB✓
262-HASH.js gzipN/A4.59 kB-
2889.HASH.js gzipN/A169 B-
5602-HASH.js gzipN/A5.55 kB-
6948ada0-HASH.js gzipN/A62.7 kB-
9544-HASH.js gzipN/A60.4 kB-
Total233 kB234 kB⚠️ +823 B
Polyfills
CanaryPRChange
polyfills-HASH.js gzip39.4 kB39.4 kB✓
Total39.4 kB39.4 kB✓
Pages
CanaryPRChange
_app-HASH.js gzip194 B194 B✓
_error-HASH.js gzip183 B180 B🟢 3 B (-2%)
css-HASH.js gzip331 B330 B✓
dynamic-HASH.js gzip1.81 kB1.81 kB✓
edge-ssr-HASH.js gzip256 B256 B✓
head-HASH.js gzip351 B352 B✓
hooks-HASH.js gzip384 B383 B✓
image-HASH.js gzip580 B581 B✓
index-HASH.js gzip260 B260 B✓
link-HASH.js gzip2.51 kB2.51 kB✓
routerDirect..HASH.js gzip320 B319 B✓
script-HASH.js gzip386 B386 B✓
withRouter-HASH.js gzip315 B315 B✓
1afbb74e6ecf..834.css gzip106 B106 B✓
Total7.98 kB7.98 kB✅ -1 B
Server
Edge SSR
CanaryPRChange
edge-ssr.js gzip125 kB125 kB✓
page.js gzip266 kB266 kB✓
Total391 kB391 kB⚠️ +239 B
Middleware
CanaryPRChange
middleware-b..fest.js gzip617 B615 B✓
middleware-r..fest.js gzip156 B155 B✓
middleware.js gzip43.6 kB43.9 kB✓
edge-runtime..pack.js gzip842 B842 B✓
Total45.2 kB45.5 kB⚠️ +298 B
Build Details
Build Manifests
CanaryPRChange
_buildManifest.js gzip715 B718 B✓
Total715 B718 B⚠️ +3 B
Build Cache
CanaryPRChange
0.pack gzip4.2 MB4.19 MB🟢 5.67 kB (0%)
index.pack gzip108 kB107 kB✓
index.pack.old gzip108 kB107 kB✓
Total4.41 MB4.4 MB✅ -6.59 kB
🔄 Shared (bundler-independent)
Runtimes
CanaryPRChange
app-page-exp...dev.js gzip331 kB331 kB✓
app-page-exp..prod.js gzip179 kB179 kB✓
app-page-tur...dev.js gzip331 kB331 kB✓
app-page-tur..prod.js gzip179 kB179 kB✓
app-page-tur...dev.js gzip327 kB327 kB✓
app-page-tur..prod.js gzip177 kB177 kB✓
app-page.run...dev.js gzip328 kB328 kB✓
app-page.run..prod.js gzip177 kB177 kB✓
app-route-ex...dev.js gzip75.9 kB75.9 kB✓
app-route-ex..prod.js gzip51.6 kB51.6 kB✓
app-route-tu...dev.js gzip75.9 kB75.9 kB✓
app-route-tu..prod.js gzip51.6 kB51.6 kB✓
app-route-tu...dev.js gzip75.5 kB75.5 kB✓
app-route-tu..prod.js gzip51.4 kB51.4 kB✓
app-route.ru...dev.js gzip75.5 kB75.5 kB✓
app-route.ru..prod.js gzip51.4 kB51.4 kB✓
dist_client_...dev.js gzip324 B324 B✓
dist_client_...dev.js gzip326 B326 B✓
dist_client_...dev.js gzip318 B318 B✓
dist_client_...dev.js gzip317 B317 B✓
pages-api-tu...dev.js gzip43.3 kB43.3 kB✓
pages-api-tu..prod.js gzip32.9 kB32.9 kB✓
pages-api.ru...dev.js gzip43.2 kB43.2 kB✓
pages-api.ru..prod.js gzip32.9 kB32.9 kB✓
pages-turbo....dev.js gzip52.6 kB52.6 kB✓
pages-turbo...prod.js gzip38.5 kB38.5 kB✓
pages.runtim...dev.js gzip52.6 kB52.6 kB✓
pages.runtim..prod.js gzip38.5 kB38.5 kB✓
server.runti..prod.js gzip62.4 kB62.4 kB✓
Total2.94 MB2.94 MB⚠️ +7 B
📝 Changed Files (9 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
  • server.runtime.prod.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..time.prod.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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server.runtime.prod.js
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📎 Tarball URL
https://vercel-packages.vercel.app/next/commits/ca344b721ff8e00c44ddb2748f53853088dcc256/next

@eps1lon
eps1lon
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canaryMar 12, 2026

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March 12, 2026 19:27
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