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Ensure _middleware is consistent in adapter for name/id#89559

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ijjk merged 1 commit intocanaryfrom
ijjk/middleware-id-name
Feb 5, 2026
Merged

Ensure _middleware is consistent in adapter for name/id#89559
ijjk merged 1 commit intocanaryfrom
ijjk/middleware-id-name

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@ijjk ijjk commented Feb 5, 2026

Makes sure we don't use both _middleware and middleware naming for the output.

Found in #89522 we were using both.

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Metric Canary PR Change Trend
Cold (Listen) 506ms 506ms ▁▁▁▁█
Cold (Ready in log) 460ms 461ms ▃▁▅▄▇
Cold (First Request) 1.892s 1.921s ▁▁▃▁▇
Warm (Listen) 506ms 507ms ▁▁▁▁█
Warm (Ready in log) 461ms 461ms ▄▁▆▄▇
Warm (First Request) 1.952s 1.923s ▂▁▃▂█
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Metric Canary PR Change Trend
Fresh Build 14.483s 14.491s ▁▁▁▁█
Cached Build 14.610s 14.601s ▁▁▁▁█
node_modules Size 467 MB 467 MB ▅████
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Client

Main Bundles
Canary PR Change
5528-HASH.js gzip 5.47 kB N/A -
6280-HASH.js gzip 56.9 kB N/A -
6335.HASH.js gzip 169 B N/A -
912-HASH.js gzip 4.53 kB N/A -
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main-HASH.js gzip 39.1 kB 39.1 kB
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5602-HASH.js gzip N/A 5.48 kB -
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9544-HASH.js gzip N/A 57.5 kB -
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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 194 B
_error-HASH.js gzip 183 B 180 B 🟢 3 B (-2%)
css-HASH.js gzip 331 B 330 B
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script-HASH.js gzip 386 B 386 B
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1afbb74e6ecf..834.css gzip 106 B 106 B
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Server

Edge SSR
Canary PR Change
edge-ssr.js gzip 126 kB 126 kB
page.js gzip 249 kB 249 kB
Total 375 kB 375 kB ⚠️ +483 B
Middleware
Canary PR Change
middleware-b..fest.js gzip 616 B 614 B
middleware-r..fest.js gzip 156 B 155 B
middleware.js gzip 33 kB 33 kB
edge-runtime..pack.js gzip 842 B 842 B
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Build Details
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Canary PR Change
_buildManifest.js gzip 732 B 736 B
Total 732 B 736 B ⚠️ +4 B
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Canary PR Change
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index.pack gzip 104 kB 103 kB
index.pack.old gzip 103 kB 105 kB 🔴 +1.9 kB (+2%)
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🔄 Shared (bundler-independent)

Runtimes
Canary PR Change
app-page-exp...dev.js gzip 315 kB 315 kB
app-page-exp..prod.js gzip 167 kB 167 kB
app-page-tur...dev.js gzip 315 kB 315 kB
app-page-tur..prod.js gzip 167 kB 167 kB
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app-page-tur..prod.js gzip 165 kB 165 kB
app-page.run...dev.js gzip 312 kB 312 kB
app-page.run..prod.js gzip 165 kB 165 kB
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app-route-tu...dev.js gzip 70.5 kB 70.5 kB
app-route-tu..prod.js gzip 49 kB 49 kB
app-route-tu...dev.js gzip 70.1 kB 70.1 kB
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@ijjk ijjk merged commit 7b2a467 into canary Feb 5, 2026
159 of 160 checks passed
@ijjk ijjk deleted the ijjk/middleware-id-name branch February 5, 2026 23:53
bgub pushed a commit to bgub/next.js that referenced this pull request Feb 6, 2026
Makes sure we don't use both `_middleware` and `middleware` naming for
the output.

Found in vercel#89522 we were using
both.
ijjk added a commit that referenced this pull request Feb 7, 2026
ijjk added a commit that referenced this pull request Feb 7, 2026
)

This is causing conflicts as the name value is relied on too much since
it can differ heavily e.g. for `src` dir and if not.

x-ref:
https://github.com/vercel/next.js/actions/runs/21767409431/job/62826336354#step:34:240

Reverts #89559
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