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Add eslint rule to prevent importing next/server outside of _middleware #30973

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merged 3 commits into from
Nov 12, 2021

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thibautsabot
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@javivelasco javivelasco self-requested a review November 12, 2021 11:53
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ijjk commented Nov 12, 2021

Stats from current PR

Default Build (Decrease detected ✓)
General Overall decrease ✓
vercel/next.js canary thibautsabot/next.js no-server-import-in-pages Change
buildDuration 22.1s 22.3s ⚠️ +155ms
buildDurationCached 4.3s 4.6s ⚠️ +255ms
nodeModulesSize 335 MB 335 MB -13 B
Page Load Tests Overall decrease ⚠️
vercel/next.js canary thibautsabot/next.js no-server-import-in-pages Change
/ failed reqs 0 0
/ total time (seconds) 3.642 3.64 0
/ avg req/sec 686.36 686.89 +0.53
/error-in-render failed reqs 0 0
/error-in-render total time (seconds) 1.617 1.703 ⚠️ +0.09
/error-in-render avg req/sec 1545.81 1468 ⚠️ -77.81
Client Bundles (main, webpack, commons)
vercel/next.js canary thibautsabot/next.js no-server-import-in-pages Change
450.HASH.js gzip 179 B 179 B
framework-HASH.js gzip 42.2 kB 42.2 kB
main-HASH.js gzip 28.3 kB 28.3 kB
webpack-HASH.js gzip 1.45 kB 1.45 kB
Overall change 72.2 kB 72.2 kB
Legacy Client Bundles (polyfills)
vercel/next.js canary thibautsabot/next.js no-server-import-in-pages Change
polyfills-HASH.js gzip 31 kB 31 kB
Overall change 31 kB 31 kB
Client Pages
vercel/next.js canary thibautsabot/next.js no-server-import-in-pages Change
_app-HASH.js gzip 1.37 kB 1.37 kB
_error-HASH.js gzip 194 B 194 B
amp-HASH.js gzip 312 B 312 B
css-HASH.js gzip 327 B 327 B
dynamic-HASH.js gzip 2.38 kB 2.38 kB
head-HASH.js gzip 350 B 350 B
hooks-HASH.js gzip 635 B 635 B
image-HASH.js gzip 4.44 kB 4.44 kB
index-HASH.js gzip 263 B 263 B
link-HASH.js gzip 1.87 kB 1.87 kB
routerDirect..HASH.js gzip 321 B 321 B
script-HASH.js gzip 383 B 383 B
withRouter-HASH.js gzip 318 B 318 B
85e02e95b279..7e3.css gzip 107 B 107 B
Overall change 13.3 kB 13.3 kB
Client Build Manifests
vercel/next.js canary thibautsabot/next.js no-server-import-in-pages Change
_buildManifest.js gzip 460 B 460 B
Overall change 460 B 460 B
Rendered Page Sizes
vercel/next.js canary thibautsabot/next.js no-server-import-in-pages Change
index.html gzip 522 B 522 B
link.html gzip 535 B 535 B
withRouter.html gzip 515 B 515 B
Overall change 1.57 kB 1.57 kB

Default Build with SWC (Decrease detected ✓)
General Overall decrease ✓
vercel/next.js canary thibautsabot/next.js no-server-import-in-pages Change
buildDuration 23.6s 24s ⚠️ +425ms
buildDurationCached 4.4s 4.4s ⚠️ +68ms
nodeModulesSize 335 MB 335 MB -13 B
Page Load Tests Overall decrease ⚠️
vercel/next.js canary thibautsabot/next.js no-server-import-in-pages Change
/ failed reqs 0 0
/ total time (seconds) 3.58 3.63 ⚠️ +0.05
/ avg req/sec 698.28 688.78 ⚠️ -9.5
/error-in-render failed reqs 0 0
/error-in-render total time (seconds) 1.733 1.759 ⚠️ +0.03
/error-in-render avg req/sec 1442.67 1421.28 ⚠️ -21.39
Client Bundles (main, webpack, commons)
vercel/next.js canary thibautsabot/next.js no-server-import-in-pages Change
450.HASH.js gzip 179 B 179 B
framework-HASH.js gzip 42.3 kB 42.3 kB
main-HASH.js gzip 28.5 kB 28.5 kB
webpack-HASH.js gzip 1.43 kB 1.43 kB
Overall change 72.5 kB 72.5 kB
Legacy Client Bundles (polyfills)
vercel/next.js canary thibautsabot/next.js no-server-import-in-pages Change
polyfills-HASH.js gzip 31 kB 31 kB
Overall change 31 kB 31 kB
Client Pages
vercel/next.js canary thibautsabot/next.js no-server-import-in-pages Change
_app-HASH.js gzip 1.35 kB 1.35 kB
_error-HASH.js gzip 180 B 180 B
amp-HASH.js gzip 305 B 305 B
css-HASH.js gzip 321 B 321 B
dynamic-HASH.js gzip 2.38 kB 2.38 kB
head-HASH.js gzip 342 B 342 B
hooks-HASH.js gzip 622 B 622 B
image-HASH.js gzip 4.46 kB 4.46 kB
index-HASH.js gzip 256 B 256 B
link-HASH.js gzip 1.91 kB 1.91 kB
routerDirect..HASH.js gzip 314 B 314 B
script-HASH.js gzip 375 B 375 B
withRouter-HASH.js gzip 309 B 309 B
85e02e95b279..7e3.css gzip 107 B 107 B
Overall change 13.2 kB 13.2 kB
Client Build Manifests
vercel/next.js canary thibautsabot/next.js no-server-import-in-pages Change
_buildManifest.js gzip 459 B 459 B
Overall change 459 B 459 B
Rendered Page Sizes
vercel/next.js canary thibautsabot/next.js no-server-import-in-pages Change
index.html gzip 522 B 522 B
link.html gzip 534 B 534 B
withRouter.html gzip 516 B 516 B
Overall change 1.57 kB 1.57 kB
Commit: 061f580

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Thanks for the PR!

@ijjk ijjk merged commit d1adf1d into vercel:canary Nov 12, 2021
@ljosberinn
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@thibautsabot It appears this has been released, however the rule is not included within the plugin as per index.js. Care to add it there aswell? :)

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ykzts commented Dec 4, 2021

@thibautsabot Is it a deliberate behavior to get errors in non-root _middleware.ts like /pages/about/_middleware.ts and /pages/about/team/_middleware.ts?

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sounds like an issue with this line. Any path that includes /pages would be a valid path?

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Hello!

Sorry for the inconvenience, will take a loot at it later today!

kodiakhq bot pushed a commit that referenced this pull request Dec 5, 2021
…2139)

People have been reporting on #30973 that the `no-server-import-in-page` eslint rule is reporting false positives for `_middleware` files inside sub-page folders.

Unlike `_document`, we can have multiple `_middleware` files.

Fixes #32121
@vercel vercel locked as resolved and limited conversation to collaborators Jan 27, 2022
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Lint warning if you use next/server outside of Middleware
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