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[metadata] do not rethrow postpone when streaming metadata is not enabled #75887

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merged 7 commits into from
Feb 11, 2025

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huozhi
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@huozhi huozhi commented Feb 11, 2025

What

We should not throw the postpone error in metadata resolving when streaming metadata is not enabled.

Why

The suspense boundary of streaming metadata can catch the postpone error and render the fallback, but in blocking metadata world we should just swallow it otherwise it will send empty fallback shell

@ijjk ijjk added created-by: Next.js team PRs by the Next.js team. type: next labels Feb 11, 2025
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ijjk commented Feb 11, 2025

Failing test suites

Commit: 5e54947

pnpm test-start test/e2e/app-dir/app-routes-subrequests/app-routes-subrequests.test.ts

  • app-routes-subrequests > shortcuts after 5 subrequests
Expand output

● app-routes-subrequests › shortcuts after 5 subrequests

next build failed with code/signal 1

   98 |           if (code || signal)
   99 |             reject(
> 100 |               new Error(`next build failed with code/signal ${code || signal}`)
      |               ^
  101 |             )
  102 |           else resolve()
  103 |         })

  at ChildProcess.<anonymous> (lib/next-modes/next-start.ts:100:15)

Read more about building and testing Next.js in contributing.md.

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ijjk commented Feb 11, 2025

Stats from current PR

Default Build (Increase detected ⚠️)
General Overall increase ⚠️
vercel/next.js canary vercel/next.js fix/streaming-cond Change
buildDuration 19.4s 16.7s N/A
buildDurationCached 15.7s 13.3s N/A
nodeModulesSize 393 MB 393 MB ⚠️ +488 B
nextStartRea..uration (ms) 441ms 434ms N/A
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main-HASH.js gzip 34.6 kB 34.5 kB N/A
webpack-HASH.js gzip 1.71 kB 1.71 kB N/A
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vercel/next.js canary vercel/next.js fix/streaming-cond Change
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withRouter-HASH.js gzip 323 B 326 B N/A
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_buildManifest.js gzip 748 B 747 B N/A
Overall change 0 B 0 B
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index.html gzip 524 B 523 B N/A
link.html gzip 540 B 538 B N/A
withRouter.html gzip 520 B 520 B
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vercel/next.js canary vercel/next.js fix/streaming-cond Change
edge-ssr.js gzip 130 kB 130 kB N/A
page.js gzip 211 kB 211 kB N/A
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middleware-r..fest.js gzip 155 B 156 B N/A
middleware.js gzip 31.3 kB 31.3 kB N/A
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app-page-exp..prod.js gzip 132 kB 132 kB
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build cache Overall increase ⚠️
vercel/next.js canary vercel/next.js fix/streaming-cond Change
0.pack gzip 2.11 MB 2.11 MB ⚠️ +2.52 kB
index.pack gzip 76.1 kB 75.4 kB N/A
Overall change 2.11 MB 2.11 MB ⚠️ +2.52 kB
Diff details
Diff for main-HASH.js

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Commit: 5e54947

@ijjk ijjk added the tests label Feb 11, 2025
@huozhi huozhi changed the title do not throw postpone error when streaming metadata is not enabled [metadata] do not rethrow postpone when streaming metadata is not enabled Feb 11, 2025
@huozhi huozhi requested a review from ztanner February 11, 2025 00:26
@huozhi huozhi marked this pull request as ready for review February 11, 2025 00:26
@huozhi huozhi merged commit 4734763 into canary Feb 11, 2025
124 of 126 checks passed
@huozhi huozhi deleted the fix/streaming-cond branch February 11, 2025 02:15
@github-actions github-actions bot locked as resolved and limited conversation to collaborators Feb 25, 2025
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3 participants