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Upgrade React from fef12a01-20260413 to da9325b5-20260417#92945

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eps1lon merged 6 commits intocanaryfrom
update/react/19.3.0-canary-da9325b5-20260417
Apr 20, 2026
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Upgrade React from fef12a01-20260413 to da9325b5-20260417#92945
eps1lon merged 6 commits intocanaryfrom
update/react/19.3.0-canary-da9325b5-20260417

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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

Metric Canary PR Change Trend
Cold (Listen) 456ms 455ms ▁▁▁▁▁
Cold (Ready in log) 444ms 442ms ▂▂▂▁▂
Cold (First Request) 1.146s 1.139s █▁█▇▁
Warm (Listen) 457ms 455ms ▁▁▁▁▁
Warm (Ready in log) 448ms 442ms ▂▁▃▁▂
Warm (First Request) 345ms 341ms ▅▄█▃▅
📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric Canary PR Change Trend
Cold (Listen) 456ms 456ms ▅█▅▁▅
Cold (Ready in log) 442ms 442ms ▃▄▃▂▁
Cold (First Request) 1.973s 1.957s ▅▆▆▆▅
Warm (Listen) 456ms 457ms ▁▅█▅▅
Warm (Ready in log) 441ms 441ms ▃▄▃▁▂
Warm (First Request) 1.978s 1.977s ▄▄▅▄▃

⚡ Production Builds

Metric Canary PR Change Trend
Fresh Build 3.883s 3.834s ▃▃▁▂▂
Cached Build 3.892s 3.943s ▁▂▁▁▂
📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric Canary PR Change Trend
Fresh Build 14.613s 14.687s ▃▃▄▃▃
Cached Build 14.713s 14.729s ▃▃▃▃▁
node_modules Size 494 MB 494 MB ▁█▁██
📦 Bundle Sizes

Bundle Sizes

⚡ Turbopack

Client

Main Bundles
Canary PR Change
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Server

Middleware
Canary PR Change
middleware-b..fest.js gzip 712 B 719 B
Total 712 B 719 B ⚠️ +7 B
Build Details
Build Manifests
Canary PR Change
_buildManifest.js gzip 431 B 433 B
Total 431 B 433 B ⚠️ +2 B

📦 Webpack

Client

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Canary PR Change
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7724.HASH.js gzip 169 B N/A -
8274-HASH.js gzip 61.4 kB N/A -
8817-HASH.js gzip 5.59 kB N/A -
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5887-HASH.js gzip N/A 5.61 kB -
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8854.HASH.js gzip N/A 169 B -
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Total 236 kB 235 kB ✅ -994 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 193 B 193 B
_error-HASH.js gzip 182 B 182 B
css-HASH.js gzip 333 B 334 B
dynamic-HASH.js gzip 1.81 kB 1.8 kB
edge-ssr-HASH.js gzip 255 B 255 B
head-HASH.js gzip 353 B 349 B 🟢 4 B (-1%)
hooks-HASH.js gzip 384 B 382 B
image-HASH.js gzip 581 B 581 B
index-HASH.js gzip 260 B 259 B
link-HASH.js gzip 2.51 kB 2.51 kB
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script-HASH.js gzip 386 B 386 B
withRouter-HASH.js gzip 313 B 314 B
1afbb74e6ecf..834.css gzip 106 B 106 B
Total 7.98 kB 7.97 kB ✅ -10 B

Server

Edge SSR
Canary PR Change
edge-ssr.js gzip 126 kB 126 kB
page.js gzip 274 kB 273 kB
Total 399 kB 399 kB ✅ -386 B
Middleware
Canary PR Change
middleware-b..fest.js gzip 618 B 617 B
middleware-r..fest.js gzip 156 B 156 B
middleware.js gzip 44.4 kB 44.5 kB
edge-runtime..pack.js gzip 842 B 842 B
Total 46 kB 46.1 kB ⚠️ +78 B
Build Details
Build Manifests
Canary PR Change
_buildManifest.js gzip 721 B 720 B
Total 721 B 720 B ✅ -1 B
Build Cache
Canary PR Change
0.pack gzip 4.38 MB 4.38 MB 🔴 +5 kB (+0%)
index.pack gzip 117 kB 115 kB
index.pack.old gzip 114 kB 114 kB
Total 4.61 MB 4.61 MB ⚠️ +3.67 kB

🔄 Shared (bundler-independent)

Runtimes
Canary PR Change
app-page-exp...dev.js gzip 347 kB 347 kB
app-page-exp..prod.js gzip 192 kB 192 kB
app-page-tur...dev.js gzip 347 kB 347 kB
app-page-tur..prod.js gzip 192 kB 192 kB
app-page-tur...dev.js gzip 343 kB 343 kB
app-page-tur..prod.js gzip 190 kB 190 kB
app-page.run...dev.js gzip 344 kB 344 kB
app-page.run..prod.js gzip 190 kB 190 kB
app-route-ex...dev.js gzip 77 kB 77 kB
app-route-ex..prod.js gzip 52.5 kB 52.5 kB
app-route-tu...dev.js gzip 77.1 kB 77.1 kB
app-route-tu..prod.js gzip 52.6 kB 52.6 kB
app-route-tu...dev.js gzip 76.7 kB 76.7 kB
app-route-tu..prod.js gzip 52.3 kB 52.3 kB
app-route.ru...dev.js gzip 76.6 kB 76.6 kB
app-route.ru..prod.js gzip 52.3 kB 52.3 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 43.9 kB 43.9 kB
pages-api-tu..prod.js gzip 33.5 kB 33.5 kB
pages-api.ru...dev.js gzip 43.9 kB 43.9 kB
pages-api.ru..prod.js gzip 33.5 kB 33.5 kB
pages-turbo....dev.js gzip 53.3 kB 53.3 kB
pages-turbo...prod.js gzip 39.1 kB 39.1 kB
pages.runtim...dev.js gzip 53.3 kB 53.3 kB
pages.runtim..prod.js gzip 39.1 kB 39.1 kB
server.runti..prod.js gzip 63 kB 63 kB
Total 3.07 MB 3.07 MB ⚠️ +238 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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📎 Tarball URL
https://vercel-packages.vercel.app/next/commits/7bf229138e4af02fa04fb57bb3c14873f761b616/next

@eps1lon eps1lon force-pushed the update/react/19.3.0-canary-da9325b5-20260417 branch from 9c3006f to 417affa Compare April 19, 2026 15:08
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vercel bot commented Apr 19, 2026

Notifying the following users due to files changed in this PR based on this repo's notify modifiers:

@timneutkens, @ijjk, @shuding, @huozhi:

packages/next/src/server/config.ts

@eps1lon eps1lon force-pushed the update/react/19.3.0-canary-da9325b5-20260417 branch from 417affa to 40ad452 Compare April 19, 2026 15:48
@eps1lon eps1lon changed the base branch from canary to graphite-base/92945 April 19, 2026 15:59
@eps1lon eps1lon force-pushed the update/react/19.3.0-canary-da9325b5-20260417 branch from 40ad452 to b53b3fd Compare April 19, 2026 15:59
@eps1lon eps1lon changed the base branch from graphite-base/92945 to sebbie/04-19-disable_sccache_temporarily April 19, 2026 15:59
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eps1lon commented Apr 19, 2026

Warning

This pull request is not mergeable via GitHub because a downstack PR is open. Once all requirements are satisfied, merge this PR as a stack on Graphite.
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This stack of pull requests is managed by Graphite. Learn more about stacking.

@eps1lon eps1lon changed the base branch from sebbie/04-19-disable_sccache_temporarily to graphite-base/92945 April 19, 2026 16:06
@eps1lon eps1lon force-pushed the graphite-base/92945 branch from 490240f to e68639f Compare April 19, 2026 16:06
@eps1lon eps1lon force-pushed the update/react/19.3.0-canary-da9325b5-20260417 branch from b53b3fd to e7bfbf5 Compare April 19, 2026 16:06
@eps1lon eps1lon changed the base branch from graphite-base/92945 to canary April 19, 2026 16:06
@eps1lon eps1lon force-pushed the update/react/19.3.0-canary-da9325b5-20260417 branch from 3161471 to 23013fb Compare April 19, 2026 17:33
@vercel vercel deleted a comment from nextjs-bot Apr 19, 2026
@eps1lon eps1lon force-pushed the update/react/19.3.0-canary-da9325b5-20260417 branch from 23013fb to adffab6 Compare April 19, 2026 18:09
Comment on lines +579 to +581
prefetch(router, href, as, {
// dedupe across appear/disappear of the Link.
bypassPrefetchedCheck: false,
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Just a drive-by. This is just making implicit behavior explicit. I was concerned this was triggering too many prefetches.

@eps1lon eps1lon force-pushed the update/react/19.3.0-canary-da9325b5-20260417 branch from adffab6 to 1aa6881 Compare April 19, 2026 18:56
@eps1lon eps1lon changed the base branch from canary to graphite-base/92945 April 19, 2026 19:20
@eps1lon eps1lon force-pushed the update/react/19.3.0-canary-da9325b5-20260417 branch from 1aa6881 to 794f3de Compare April 19, 2026 19:20
@eps1lon eps1lon changed the base branch from graphite-base/92945 to sebbie/04-19-_test_deflake_shallow-routing_ April 19, 2026 19:20
@eps1lon eps1lon changed the base branch from sebbie/04-19-_test_deflake_shallow-routing_ to graphite-base/92945 April 19, 2026 23:21
@eps1lon eps1lon force-pushed the graphite-base/92945 branch from 7248f86 to fe1c1c3 Compare April 19, 2026 23:21
@eps1lon eps1lon force-pushed the update/react/19.3.0-canary-da9325b5-20260417 branch from 794f3de to 857c31c Compare April 19, 2026 23:21
@graphite-app graphite-app bot changed the base branch from graphite-base/92945 to canary April 19, 2026 23:21
@eps1lon eps1lon force-pushed the update/react/19.3.0-canary-da9325b5-20260417 branch from 857c31c to a342b1f Compare April 19, 2026 23:21
@eps1lon eps1lon merged commit 4fc3664 into canary Apr 20, 2026
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eps1lon commented Apr 20, 2026

Merge activity

@eps1lon eps1lon deleted the update/react/19.3.0-canary-da9325b5-20260417 branch April 20, 2026 07:00
linyiru added a commit to solcreek/adapter-creek that referenced this pull request Apr 20, 2026
PR vercel/next.js#92945 (commit 4fc3664eed, 2026-04-20) upgraded
bundled React and rewrote ~9 test files to expect the new minified
\`Minified React error #441\` format. The tests currently expect the
new text.

Problem: our test harness installs \`next\` from npm (via pnpm) with
version \`16.3.0-canary.2\` (the latest published canary tag, cut
Apr 18 before #92945 merged). That tarball bundles the OLDER
\`react-server-dom-webpack-client.browser.production.js\` which still
produces \`An error occurred in the Server Components render. The
specific message is omitted...\` text. The NEW text only exists in
\`packages/next/src/compiled/\` on canary HEAD, not in any published
tarball yet.

Affected sub-tests (all assert on the new text):
- catch-error / catch-error-react-compiler
- global-error/basic
- taint/process-taint
- actions/app-action / app-action-node-middleware
- use-cache/use-cache

Cherry-pick a REVERSE of #92945's test-only hunks so expectations go
back to the old text — matches what the installed bundle actually
emits. Verified locally: catch-error, catch-error-react-compiler,
global-error/basic, taint/process-taint all pass on retry 0.

Drop this patch once \`npm view next@canary\` returns a version that
includes commit 4fc3664eed (verification command is in
scripts/patches/README.md).
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