Enable rootParams by default by gnoff · Pull Request #93863 · vercel/next.js

gnoff · 2026-05-14T22:33:59Z

rootParams is now available by default. the flag is removed.

There are still intentional limitations. For instance rootParams cannot be used in route handlers and Server Actions. The feature will be expanded with some support for this in the future.

vercel · 2026-05-14T22:34:05Z

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

rootParams is now available by default. the flag is removed. There are still intentional limitations. For instance rootParams cannot be used in route handlers and Server Actions. The feature will be expanded with some support for this in the future.

github-actions · 2026-05-14T23:41:17Z

Stats from current PR

🔴 1 regression

Metric	Canary	PR	Change	Trend
Webpack Build Time (cached)	24.259s	24.761s	🔴 +502ms (+2%)	▂▃▄█▇

📊 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)	811ms	812ms	✓	▅▂▅▄█
Cold (Ready in log)	775ms	776ms	✓	▁▅▁▅▇
Cold (First Request)	1.187s	1.183s	✓	▁▄▁▄█
Warm (Listen)	812ms	811ms	✓	▃▁▆▁█
Warm (Ready in log)	779ms	775ms	✓	▁▇▁██
Warm (First Request)	577ms	574ms	✓	▁▆▁██

📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric	Canary	PR	Change	Trend
Cold (Listen)	812ms	813ms	✓	▅▁▇▇▇
Cold (Ready in log)	784ms	779ms	✓	▄▄▅▇█
Cold (First Request)	3.192s	3.211s	✓	▂▃▄▅▇
Warm (Listen)	812ms	812ms	✓	▁▁▅▅▅
Warm (Ready in log)	781ms	782ms	✓	▄▄▅▅█
Warm (First Request)	3.209s	3.228s	✓	▄▆▄▄█

⚡ Production Builds

Metric	Canary	PR	Change	Trend
Fresh Build	4.627s	4.676s	✓	▁▄▁▃█
Cached Build	4.642s	4.656s	✓	▁▄▁▆█

📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric	Canary	PR	Change	Trend
Fresh Build	24.338s	24.308s	✓	▁▁▃█▆
Cached Build	24.259s	24.761s	🔴 +502ms (+2%)	▂▃▄█▇
node_modules Size	506 MB	506 MB	✓	▁▁▁▁▁

📦 Bundle Sizes

Bundle Sizes

⚡ Turbopack

Client

Main Bundles

	Canary	PR	Change
0-_5zcp4erz06.js gzip	155 B	N/A	-
04hm05ar7kldw.js gzip	5.73 kB	N/A	-
0c2d37sbzdihx.js gzip	70.9 kB	N/A	-
0cz1d0mv5g_q7.js gzip	39.4 kB	39.4 kB	✓
0dvitrl5zg37g.js gzip	8.82 kB	N/A	-
0sf7ysou-72zd.js gzip	8.71 kB	N/A	-
157abun3hwc_s.js gzip	10.3 kB	N/A	-
17x5h-qqxhzrx.js gzip	154 B	N/A	-
1a87ez4a5ecgj.js gzip	156 B	N/A	-
1elt1qium-r2m.css gzip	115 B	115 B	✓
1g3whbu20hkn7.js gzip	155 B	N/A	-
1jj68jv9537mc.js gzip	13.8 kB	N/A	-
1jpaub6y8xlfr.js gzip	2.3 kB	N/A	-
1ot0mvscrc_uf.js gzip	233 B	N/A	-
1xu8iw0j0r_tg.js gzip	151 B	N/A	-
1z3ut8arlyv-i.js gzip	160 B	N/A	-
1zjhxeflzl-vy.js gzip	159 B	N/A	-
2_m3xv2uq3sjc.js gzip	1.46 kB	N/A	-
24qtz2uzl4wst.js gzip	155 B	N/A	-
24y34mwgrkqp4.js gzip	8.78 kB	N/A	-
2b9eovwn8litd.js gzip	167 B	N/A	-
2c-fd4y1zozz8.js gzip	8.79 kB	N/A	-
2d7416h_xd36x.js gzip	8.71 kB	N/A	-
2g21ny1t2kw37.js gzip	7.61 kB	N/A	-
2lyuhit6rn8fy.js gzip	9.44 kB	N/A	-
2m04xa7h1rs-q.js gzip	154 B	N/A	-
2p2xgspe77mv3.js gzip	50.2 kB	N/A	-
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2slg72_yqs010.js gzip	153 B	N/A	-
2t9e75oz6r0zp.js gzip	8.76 kB	N/A	-
2uku_olcn15b7.js gzip	8.79 kB	N/A	-
30r8mm-46bdqy.js gzip	220 B	220 B	✓
3c1jdxkzlb8oq.js gzip	12.9 kB	N/A	-
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3jkm5tdjvaf_q.js gzip	13.1 kB	N/A	-
3lo6ux8llsnmh.js gzip	155 B	N/A	-
3mt67agm5wp40.js gzip	10.6 kB	N/A	-
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turbopack-1q..-ok_.js gzip	4.2 kB	N/A	-
turbopack-22..xlgf.js gzip	4.2 kB	N/A	-
turbopack-2j..-i08.js gzip	4.2 kB	N/A	-
turbopack-2m..lvl1.js gzip	4.19 kB	N/A	-
turbopack-2n..6oym.js gzip	4.2 kB	N/A	-
turbopack-2q..ly21.js gzip	4.2 kB	N/A	-
turbopack-2z..p4tc.js gzip	4.2 kB	N/A	-
turbopack-2z..7_r3.js gzip	4.2 kB	N/A	-
turbopack-36..6bnx.js gzip	4.2 kB	N/A	-
turbopack-3h..ye_7.js gzip	4.2 kB	N/A	-
turbopack-3u..zpvr.js gzip	4.2 kB	N/A	-
0_i7nqgx23st7.js gzip	N/A	10 kB	-
06puhytyxk31p.js gzip	N/A	8.82 kB	-
0fi0ogq0bwa6w.js gzip	N/A	156 B	-
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0inuwrr_z3vqy.js gzip	N/A	157 B	-
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0m34gln_kt4fg.js gzip	N/A	5.73 kB	-
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0tw7eybgj56wj.js gzip	N/A	162 B	-
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1g3q1ww01thnl.js gzip	N/A	2.3 kB	-
1hraqxuiymq6v.js gzip	N/A	8.79 kB	-
1l9un1sl77287.js gzip	N/A	1.46 kB	-
1m4eug5ntv_6s.js gzip	N/A	158 B	-
21-eavqb1k_36.js gzip	N/A	13.9 kB	-
2147zgtf14z-q.js gzip	N/A	234 B	-
23bz3xsg-5-1s.js gzip	N/A	8.71 kB	-
27441mytv7pbm.js gzip	N/A	9.43 kB	-
29glh04g2fky_.js gzip	N/A	155 B	-
2bvt07mcvgwk5.js gzip	N/A	70.9 kB	-
2cjkwjgm1zcfs.js gzip	N/A	8.71 kB	-
2juhakbhezws1.js gzip	N/A	155 B	-
2nvrrw4th6joh.js gzip	N/A	156 B	-
2scd8zaoyb8md.js gzip	N/A	8.79 kB	-
2st_qs6p_9us0.js gzip	N/A	13.1 kB	-
2yjp27e2w0jqk.js gzip	N/A	157 B	-
2zo2exm1d8qj1.js gzip	N/A	13.6 kB	-
3_3acx7-vxc4d.js gzip	N/A	170 B	-
38d-gyinlsucy.js gzip	N/A	155 B	-
3ehsq7o481snb.js gzip	N/A	65.6 kB	-
3f710q6kll2xn.js gzip	N/A	7.61 kB	-
3hn75zuxly9az.js gzip	N/A	10.3 kB	-
3hqh7m128tvsn.js gzip	N/A	8.77 kB	-
3hqti_t-zy1x4.js gzip	N/A	449 B	-
3mnawenie1flm.js gzip	N/A	8.76 kB	-
3ubsozlu6zs38.js gzip	N/A	10.6 kB	-
43iwfqjnx1cy_.js gzip	N/A	8.78 kB	-
turbopack-05..7ncy.js gzip	N/A	4.2 kB	-
turbopack-0b..v1vw.js gzip	N/A	4.2 kB	-
turbopack-1f..ft9l.js gzip	N/A	4.21 kB	-
turbopack-1r..0jem.js gzip	N/A	4.2 kB	-
turbopack-1x..m7up.js gzip	N/A	4.2 kB	-
turbopack-22..gj3o.js gzip	N/A	4.2 kB	-
turbopack-23..a1fe.js gzip	N/A	4.2 kB	-
turbopack-2a..bl3v.js gzip	N/A	4.2 kB	-
turbopack-2c..vpvm.js gzip	N/A	4.2 kB	-
turbopack-2m.._6v6.js gzip	N/A	4.18 kB	-
turbopack-2v..o277.js gzip	N/A	4.2 kB	-
turbopack-3-..eqbs.js gzip	N/A	4.2 kB	-
turbopack-3k..-v4v.js gzip	N/A	4.2 kB	-
turbopack-3n..qcfi.js gzip	N/A	4.2 kB	-
Total	469 kB	469 kB	⚠️ +113 B

Server

Middleware

	Canary	PR	Change
middleware-b..fest.js gzip	716 B	721 B	✓
Total	716 B	721 B	⚠️ +5 B

Build Details

Build Manifests

	Canary	PR	Change
_buildManifest.js gzip	432 B	433 B	✓
Total	432 B	433 B	⚠️ +1 B

📦 Webpack

Client

Main Bundles

	Canary	PR	Change
2258-HASH.js gzip	61.4 kB	N/A	-
2266-HASH.js gzip	4.69 kB	N/A	-
3317.HASH.js gzip	169 B	N/A	-
4866-HASH.js gzip	5.64 kB	N/A	-
9e302639-HASH.js gzip	62.8 kB	N/A	-
framework-HASH.js gzip	59.5 kB	59.5 kB	✓
main-app-HASH.js gzip	255 B	255 B	✓
main-HASH.js gzip	39.9 kB	39.9 kB	✓
webpack-HASH.js gzip	1.68 kB	1.68 kB	✓
175fd0fd-HASH.js gzip	N/A	62.8 kB	-
2596-HASH.js gzip	N/A	5.63 kB	-
34-HASH.js gzip	N/A	61.3 kB	-
5691.HASH.js gzip	N/A	169 B	-
9156-HASH.js gzip	N/A	4.68 kB	-
Total	236 kB	236 kB	✅ -99 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	181 B	182 B	✓
css-HASH.js gzip	334 B	332 B	✓
dynamic-HASH.js gzip	1.79 kB	1.81 kB	✓
edge-ssr-HASH.js gzip	255 B	255 B	✓
head-HASH.js gzip	351 B	348 B	✓
hooks-HASH.js gzip	385 B	384 B	✓
image-HASH.js gzip	580 B	580 B	✓
index-HASH.js gzip	257 B	259 B	✓
link-HASH.js gzip	2.51 kB	2.52 kB	✓
routerDirect..HASH.js gzip	318 B	319 B	✓
script-HASH.js gzip	387 B	386 B	✓
withRouter-HASH.js gzip	316 B	316 B	✓
1afbb74e6ecf..834.css gzip	106 B	106 B	✓
Total	7.97 kB	7.99 kB	⚠️ +19 B

Server

Edge SSR

	Canary	PR	Change
edge-ssr.js gzip	126 kB	126 kB	✓
page.js gzip	276 kB	270 kB	🟢 5.31 kB (-2%)
Total	402 kB	396 kB	✅ -5.53 kB

Middleware

	Canary	PR	Change
middleware-b..fest.js gzip	620 B	615 B	✓
middleware-r..fest.js gzip	155 B	155 B	✓
middleware.js gzip	44.9 kB	44.8 kB	✓
edge-runtime..pack.js gzip	842 B	842 B	✓
Total	46.5 kB	46.4 kB	✅ -58 B

Build Details

Build Manifests

	Canary	PR	Change
_buildManifest.js gzip	719 B	717 B	✓
Total	719 B	717 B	✅ -2 B

Build Cache

	Canary	PR	Change
0.pack gzip	4.49 MB	4.48 MB	🟢 4.71 kB (0%)
index.pack gzip	114 kB	115 kB	✓
index.pack.old gzip	115 kB	114 kB	✓
Total	4.72 MB	4.71 MB	✅ -4.34 kB

🔄 Shared (bundler-independent)

Runtimes

	Canary	PR	Change
app-page-exp...dev.js gzip	350 kB	350 kB	✓
app-page-exp..prod.js gzip	195 kB	195 kB	✓
app-page-tur...dev.js gzip	350 kB	350 kB	✓
app-page-tur..prod.js gzip	194 kB	194 kB	✓
app-page-tur...dev.js gzip	346 kB	346 kB	✓
app-page-tur..prod.js gzip	192 kB	192 kB	✓
app-page.run...dev.js gzip	347 kB	347 kB	✓
app-page.run..prod.js gzip	193 kB	193 kB	✓
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app-route-tu...dev.js gzip	77.6 kB	77.6 kB	✓
app-route-tu..prod.js gzip	52.9 kB	52.9 kB	✓
app-route-tu...dev.js gzip	77.2 kB	77.2 kB	✓
app-route-tu..prod.js gzip	52.7 kB	52.7 kB	✓
app-route.ru...dev.js gzip	77.1 kB	77.1 kB	✓
app-route.ru..prod.js gzip	52.7 kB	52.7 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	44.3 kB	44.3 kB	✓
pages-api-tu..prod.js gzip	33.8 kB	33.8 kB	✓
pages-api.ru...dev.js gzip	44.3 kB	44.3 kB	✓
pages-api.ru..prod.js gzip	33.7 kB	33.7 kB	✓
pages-turbo....dev.js gzip	53.7 kB	53.7 kB	✓
pages-turbo...prod.js gzip	39.4 kB	39.4 kB	✓
pages.runtim...dev.js gzip	53.6 kB	53.6 kB	✓
pages.runtim..prod.js gzip	39.4 kB	39.4 kB	✓
server.runti..prod.js gzip	63.1 kB	63.1 kB	✓
use-cache-pr...dev.js gzip	69.7 kB	69.7 kB	✓
use-cache-pr...dev.js gzip	69.7 kB	69.7 kB	✓
use-cache-pr...dev.js gzip	68 kB	68 kB	✓
use-cache-pr...dev.js gzip	68 kB	68 kB	✓
Total	3.37 MB	3.37 MB	✅ -3 B

📎 Tarball URL

https://vercel-packages.vercel.app/next/commits/e83b672edab1dc6acac02fb72b1bbd18508f2e50/next

Commit: e83b672

github-actions · 2026-05-14T23:47:08Z

Failing test suites

Commit: e83b672 | About building and testing Next.js

pnpm test-dev test/development/acceptance-app/rsc-build-errors.test.ts (job)

Error overlay - RSC build errors > next/root-params > importing a non-existent getter from 'next/root-params' (DD)

Expand output

● Error overlay - RSC build errors › next/root-params › importing a non-existent getter from 'next/root-params'

expect(received).toInclude(expected)

Expected string to include:
  "Attempted import error: 'whatever' is not exported from 'next/root-params' (imported as 'whatever')."
Received:
  "app/server-with-errors/next-root-params/without-flag/page.js (4:27) @ Page·
  2 |
  3 | export default async function Page() {
> 4 |   return <>{await whatever()}</>
    |                           ^
  5 | }
  6 |"

  380 |       const { session } = sandbox
  381 |       await session.waitForRedbox()
> 382 |       expect(await session.getRedboxSource()).toInclude(
      |                                               ^
  383 |         isTurbopack
  384 |           ? `Export whatever doesn't exist in target module`
  385 |           : `Attempted import error: 'whatever' is not exported from 'next/root-params' (imported as 'whatever').`

  at Object.toInclude (development/acceptance-app/rsc-build-errors.test.ts:382:47)

pnpm test-dev test/development/typescript-app-type-declarations/typescript-app-type-declarations.test.ts (job)

typescript-app-type-declarations > should write a new next-env.d.ts if none exist (DD)

Expand output

● typescript-app-type-declarations › should write a new next-env.d.ts if none exist

expect(received).toEqual(expected) // deep equality

- Expected  - 0
+ Received  + 1

@@ -1,8 +1,9 @@
  /// <reference types="next" />
  /// <reference types="next/image-types/global" />
  import "./.next/dev/types/routes.d.ts";
+ import "./.next/dev/types/root-params.d.ts";
  import "./.next/dev/types/cache-life.d.ts";
  import "./.next/dev/types/validator.ts";

  // NOTE: This file should not be edited
  // see https://nextjs.org/docs/pages/api-reference/config/typescript for more information.

  78 |     await retry(async () => {
  79 |       const content = await next.readFile('next-env.d.ts')
> 80 |       expect(content).toEqual(prevContent)
     |                       ^
  81 |     })
  82 |   })
  83 |

  at toEqual (development/typescript-app-type-declarations/typescript-app-type-declarations.test.ts:80:23)
  at retry (lib/next-test-utils.ts:867:14)
  at Object.<anonymous> (development/typescript-app-type-declarations/typescript-app-type-declarations.test.ts:78:5)

pnpm test-dev-turbo test/development/typescript-app-type-declarations/typescript-app-type-declarations.test.ts (turbopack) (job)

typescript-app-type-declarations > should write a new next-env.d.ts if none exist (DD)

Expand output

● typescript-app-type-declarations › should write a new next-env.d.ts if none exist

expect(received).toEqual(expected) // deep equality

- Expected  - 0
+ Received  + 1

@@ -1,8 +1,9 @@
  /// <reference types="next" />
  /// <reference types="next/image-types/global" />
  import "./.next/dev/types/routes.d.ts";
+ import "./.next/dev/types/root-params.d.ts";
  import "./.next/dev/types/cache-life.d.ts";
  import "./.next/dev/types/validator.ts";

  // NOTE: This file should not be edited
  // see https://nextjs.org/docs/pages/api-reference/config/typescript for more information.

  78 |     await retry(async () => {
  79 |       const content = await next.readFile('next-env.d.ts')
> 80 |       expect(content).toEqual(prevContent)
     |                       ^
  81 |     })
  82 |   })
  83 |

  at toEqual (development/typescript-app-type-declarations/typescript-app-type-declarations.test.ts:80:23)
  at retry (lib/next-test-utils.ts:867:14)
  at Object.<anonymous> (development/typescript-app-type-declarations/typescript-app-type-declarations.test.ts:78:5)

gnoff force-pushed the jstory/remove-rootparams-flag branch from 5a5f214 to 2609941 Compare May 14, 2026 23:05

Enable rootParams by default

e83b672

rootParams is now available by default. the flag is removed. There are still intentional limitations. For instance rootParams cannot be used in route handlers and Server Actions. The feature will be expanded with some support for this in the future.

gnoff force-pushed the jstory/remove-rootparams-flag branch from 2609941 to e83b672 Compare May 14, 2026 23:08

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Enable rootParams by default#93863

Enable rootParams by default#93863
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