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[test] Add test for on-demand prefetch prerendering - #97869

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[test] Add test for on-demand prefetch prerendering#97869
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@unstubbable unstubbable commented Aug 25, 2026 •
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Fails when deployed with NEXT_ENABLE_ADAPTER=1

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[test] Add test for on-demand prefetch prerendering
28562a8 
Fails when deployed with `NEXT_ENABLE_ADAPTER=1`
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Stats from current PR

🟢 1 improvement

Metric Canary PR Change Trend
Webpack Warm (First Request) 3.510s 3.352s 🟢 158ms (-5%) █▁▇▁▁
📊 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) 813ms 812ms ✓ █████
Cold (Ready in log) 788ms 790ms ✓ ▇█▆▅▅
Cold (First Request) 1.245s 1.244s ✓ ▇█▆▄▃
Warm (Listen) 812ms 813ms ✓ █████
Warm (Ready in log) 785ms 804ms ✓ ▅▆▅▃▄
Warm (First Request) 1.221s 1.280s ✓ ▅▇▆▂▃
📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric Canary PR Change Trend
Cold (Listen) 814ms 814ms ✓ █▁█▁▁
Cold (Ready in log) 814ms 809ms ✓ █▂█▁▁
Cold (First Request) 3.437s 3.414s ✓ █▁▇▁▁
Warm (Listen) 862ms 813ms ✓ █▁▇▁▁
Warm (Ready in log) 822ms 808ms ✓ █▁█▁▁
Warm (First Request) 3.510s 3.352s 🟢 158ms (-5%) █▁▇▁▁

⚡ Production Builds

Metric Canary PR Change Trend
Fresh Build 5.622s 5.472s ✓ █▇▇▇▇
Cached Build 2.849s 2.837s ✓ ██▆▅▂
📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric Canary PR Change Trend
Fresh Build 25.121s 25.104s ✓ █▂█▁▁
Cached Build 25.444s 25.195s ✓ █▂█▁▁
node_modules Size 553 MB 553 MB ✓ ▁▁▁▁▁
📦 Bundle Sizes

Bundle Sizes

⚡ Turbopack

Client

Main Bundles
Canary PR Change
017_4moyv5m34.js gzip 117 B 117 B ✓
05jocc85-b73_.js gzip 341 B N/A -
096twxhe86hwd.js gzip 7.53 kB N/A -
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1elt1qium-r2m.css gzip 115 B 115 B ✓
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38wfp6jjrrdfm.js gzip 131 B 131 B ✓
3dl1ilk37-30g.js gzip 117 B N/A -
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3kvxagoobts7h.js gzip 117 B N/A -
3p99hd9vwe6ae.js gzip 13 kB N/A -
3r0475panhk6m.js gzip 123 B N/A -
3s0i-weykgzrt.js gzip 125 B N/A -
3wijk2ywqgsv9.js gzip 2.52 kB N/A -
41kebu3wv5f4d.js gzip 65.5 kB N/A -
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turbopack-0d..9ejy.js gzip 3.74 kB 3.74 kB ✓
02zc7sqlpqxn3.js gzip N/A 119 B -
0e28eh3gbwmp0.js gzip N/A 3.51 kB -
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0longconn5mlm.js gzip N/A 123 B -
0p4l3ozbez2cz.js gzip N/A 2.35 kB -
0sbh_15ejop4o.js gzip N/A 13 kB -
0skdm-9rpid8g.js gzip N/A 117 B -
0wv-h56sz83wn.js gzip N/A 120 B -
1_to3gb2_pcj4.js gzip N/A 65.5 kB -
137xup2t69ovc.js gzip N/A 1.97 kB -
1fk10s3m1oecx.js gzip N/A 400 B -
1hfmb19p0_s-a.js gzip N/A 71.5 kB -
1mxl0dqw8ap5y.js gzip N/A 154 B -
20qhkyyj2_tla.js gzip N/A 116 B -
25lb_468wpv8t.js gzip N/A 117 B -
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2vqdfieehz5do.js gzip N/A 8.75 kB -
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Total 299 kB 299 kB ⚠️ +3 B

Server

Middleware
Canary PR Change
middleware-b..fest.js gzip 1.02 kB 1.02 kB ✓
Total 1.02 kB 1.02 kB ⚠️ +1 B
Build Details
Build Manifests
Canary PR Change
_buildManifest.js gzip 846 B 846 B ✓
Total 846 B 846 B ✓
Build Cache
Canary PR Change
00000001.sst gzip 13.6 MB 13.8 MB 🔴 +264 kB (+2%)
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00000007.sst gzip 59 B 59 B ✓
00000008.meta gzip 89 B 89 B ✓
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00000036.sst gzip 54.7 kB 53.5 kB 🟢 1.23 kB (-2%)
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CURRENT gzip 94 B 94 B ✓
LOG gzip 678 B 670 B 🟢 8 B (-1%)
Total 79.6 MB 79.6 MB ⚠️ +20.7 kB

📦 Webpack

Client

Main Bundles
Canary PR Change
3322-HASH.js gzip 65.7 kB N/A -
4191.HASH.js gzip 169 B N/A -
9784-HASH.js gzip 5.57 kB N/A -
b1ad9f4c-HASH.js gzip 63.5 kB N/A -
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3577.HASH.js gzip N/A 168 B -
578-HASH.js gzip N/A 65.8 kB -
8590-HASH.js gzip N/A 5.53 kB -
a8984546-HASH.js gzip N/A 63.5 kB -
Total 236 kB 236 kB ⚠️ +106 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 ✓
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withRouter-HASH.js gzip 316 B 315 B ✓
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Total 12.4 kB 12.4 kB ✓

Server

Edge SSR
Canary PR Change
edge-ssr.js gzip 128 kB 128 kB ✓
page.js gzip 293 kB 293 kB ✓
Total 421 kB 421 kB ✅ -412 B
Middleware
Canary PR Change
middleware-b..fest.js gzip 600 B 604 B ✓
middleware-r..fest.js gzip 156 B 156 B ✓
middleware.js gzip 45.5 kB 45.2 kB ✓
edge-runtime..pack.js gzip 842 B 842 B ✓
Total 47.1 kB 46.8 kB ✅ -270 B
Build Details
Build Manifests
Canary PR Change
_buildManifest.js gzip 698 B 698 B ✓
Total 698 B 698 B ✓
Build Cache
Canary PR Change
0.pack gzip 4.8 MB 4.79 MB 🟢 8.35 kB (0%)
index.pack gzip 123 kB 123 kB ✓
index.pack.old gzip 125 kB 123 kB 🟢 2.3 kB (-2%)
Total 5.05 MB 5.04 MB ✅ -10.9 kB

🔄 Shared (bundler-independent)

Runtimes
Canary PR Change
app-page-exp...dev.js gzip 375 kB 375 kB ✓
app-page-exp..prod.js gzip 206 kB 206 kB ✓
app-page-tur...dev.js gzip 374 kB 374 kB ✓
app-page-tur..prod.js gzip 206 kB 206 kB ✓
app-page-tur...dev.js gzip 370 kB 370 kB ✓
app-page-tur..prod.js gzip 204 kB 204 kB ✓
app-page.run...dev.js gzip 371 kB 371 kB ✓
app-page.run..prod.js gzip 204 kB 204 kB ✓
app-route-ex...dev.js gzip 82.5 kB 82.5 kB ✓
app-route-ex..prod.js gzip 55.6 kB 55.6 kB ✓
app-route-tu...dev.js gzip 82.5 kB 82.5 kB ✓
app-route-tu..prod.js gzip 55.6 kB 55.6 kB ✓
app-route-tu...dev.js gzip 82.1 kB 82.1 kB ✓
app-route-tu..prod.js gzip 55.4 kB 55.4 kB ✓
app-route.ru...dev.js gzip 82.1 kB 82.1 kB ✓
app-route.ru..prod.js gzip 55.4 kB 55.4 kB ✓
dev-validati...dev.js gzip 134 kB 134 kB ✓
dev-validati...dev.js gzip 134 kB 134 kB ✓
dev-validati...dev.js gzip 132 kB 132 kB ✓
dev-validati...dev.js gzip 132 kB 132 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 46.2 kB 46.2 kB ✓
pages-api-tu..prod.js gzip 34.3 kB 34.3 kB ✓
pages-api.ru...dev.js gzip 46.2 kB 46.2 kB ✓
pages-api.ru..prod.js gzip 34.3 kB 34.3 kB ✓
pages-turbo....dev.js gzip 54.6 kB 54.6 kB ✓
pages-turbo...prod.js gzip 39.7 kB 39.7 kB ✓
pages.runtim...dev.js gzip 54.6 kB 54.6 kB ✓
pages.runtim..prod.js gzip 39.6 kB 39.6 kB ✓
server.runti..prod.js gzip 65.9 kB 65.9 kB ✓
use-cache-pr...dev.js gzip 73.3 kB 73.3 kB ✓
use-cache-pr...dev.js gzip 73.3 kB 73.3 kB ✓
use-cache-pr...dev.js gzip 71.5 kB 71.5 kB ✓
use-cache-pr...dev.js gzip 71.5 kB 71.5 kB ✓
Total 4.1 MB 4.1 MB ✓
📎 Tarball URL 
https://vercel-packages.vercel.app/next/commits/28562a8b16fdc405d5202ee5117d2cbda89b2209/next

Commit: 28562a8

@github-actions

github-actions Bot commented Aug 25, 2026 •
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Tests Passed

Commit: 28562a8

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