Remove `isRoutePPREnabled` from render options and delete dead PPR branch by devjiwonchoi · Pull Request #90713 · vercel/next.js

devjiwonchoi · 2026-03-01T03:25:46Z

Stacked on #90704

This PR replaces experimental.isRoutePPREnabled render options with cacheComponents and removes unused code.

Verified deployment tests pass on CI: https://github.com/vercel/next.js/actions/runs/22536405880

nextjs-bot · 2026-03-01T03:44:38Z

Stats from current PR

🟢 1 improvement

Metric	Canary	PR	Change	Trend
node_modules Size	476 MB	475 MB	🟢 412 kB (0%)	▁▁▁▁▁

📊 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)	759ms	711ms	✓	▁▃▁▇█
Cold (Ready in log)	747ms	705ms	✓	▂▂▁▇█
Cold (First Request)	1.464s	1.409s	✓	▃▃▁▇█
Warm (Listen)	810ms	763ms	✓	▁▃▁▇█
Warm (Ready in log)	771ms	756ms	✓	▁▃▁▇█
Warm (First Request)	525ms	592ms	✓	▁▃▁▇█

📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric	Canary	PR	Change	Trend
Cold (Listen)	508ms	457ms	✓	▁▁▅▁▁
Cold (Ready in log)	468ms	451ms	✓	▃▁▅▁▄
Cold (First Request)	2.063s	1.995s	✓	▂▁▅▁▂
Warm (Listen)	456ms	508ms	✓	▁▁▅▁▁
Warm (Ready in log)	453ms	469ms	✓	▃▁▅▁▃
Warm (First Request)	2.064s	2.068s	✓	▂▁▅▁▂

⚡ Production Builds

Metric	Canary	PR	Change	Trend
Fresh Build	5.783s	5.736s	✓	▁▄▁▆█
Cached Build	5.655s	5.868s	✓	▁▄▁▆█

📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric	Canary	PR	Change	Trend
Fresh Build	14.920s	14.678s	✓	▁▁▄▁▁
Cached Build	14.828s	14.722s	✓	▁▁▄▁▁
node_modules Size	476 MB	475 MB	🟢 412 kB (0%)	▁▁▁▁▁

📦 Bundle Sizes

Bundle Sizes

⚡ Turbopack

Client

Main Bundles: **401 kB** → **401 kB** ✅ -30 B

80 files with content-based hashes (individual files not comparable between builds)

Server

Middleware

	Canary	PR	Change
middleware-b..fest.js gzip	770 B	762 B	🟢 8 B (-1%)
Total	770 B	762 B	✅ -8 B

Build Details

Build Manifests

	Canary	PR	Change
_buildManifest.js gzip	450 B	452 B	✓
Total	450 B	452 B	⚠️ +2 B

📦 Webpack

Client

Main Bundles

	Canary	PR	Change
5528-HASH.js gzip	5.54 kB	N/A	-
6280-HASH.js gzip	58.8 kB	N/A	-
6335.HASH.js gzip	169 B	N/A	-
912-HASH.js gzip	4.59 kB	N/A	-
e8aec2e4-HASH.js gzip	62.6 kB	N/A	-
framework-HASH.js gzip	59.7 kB	59.7 kB	✓
main-app-HASH.js gzip	256 B	255 B	✓
main-HASH.js gzip	39.1 kB	39.1 kB	✓
webpack-HASH.js gzip	1.68 kB	1.68 kB	✓
262-HASH.js gzip	N/A	4.59 kB	-
2889.HASH.js gzip	N/A	169 B	-
5602-HASH.js gzip	N/A	5.55 kB	-
6948ada0-HASH.js gzip	N/A	62.6 kB	-
9544-HASH.js gzip	N/A	59.5 kB	-
Total	233 kB	233 kB	⚠️ +698 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	194 B	✓
_error-HASH.js gzip	183 B	180 B	🟢 3 B (-2%)
css-HASH.js gzip	331 B	330 B	✓
dynamic-HASH.js gzip	1.81 kB	1.81 kB	✓
edge-ssr-HASH.js gzip	256 B	256 B	✓
head-HASH.js gzip	351 B	352 B	✓
hooks-HASH.js gzip	384 B	383 B	✓
image-HASH.js gzip	580 B	581 B	✓
index-HASH.js gzip	260 B	260 B	✓
link-HASH.js gzip	2.51 kB	2.51 kB	✓
routerDirect..HASH.js gzip	320 B	319 B	✓
script-HASH.js gzip	386 B	386 B	✓
withRouter-HASH.js gzip	315 B	315 B	✓
1afbb74e6ecf..834.css gzip	106 B	106 B	✓
Total	7.98 kB	7.98 kB	✅ -1 B

Server

Edge SSR

	Canary	PR	Change
edge-ssr.js gzip	125 kB	125 kB	✓
page.js gzip	254 kB	255 kB	✓
Total	379 kB	380 kB	⚠️ +578 B

Middleware

	Canary	PR	Change
middleware-b..fest.js gzip	617 B	616 B	✓
middleware-r..fest.js gzip	156 B	155 B	✓
middleware.js gzip	43.9 kB	43.7 kB	✓
edge-runtime..pack.js gzip	842 B	842 B	✓
Total	45.5 kB	45.3 kB	✅ -244 B

Build Details

Build Manifests

	Canary	PR	Change
_buildManifest.js gzip	715 B	718 B	✓
Total	715 B	718 B	⚠️ +3 B

Build Cache

	Canary	PR	Change
0.pack gzip	4.04 MB	4.06 MB	🔴 +12.7 kB (+0%)
index.pack gzip	103 kB	102 kB	✓
index.pack.old gzip	103 kB	102 kB	🟢 1.1 kB (-1%)
Total	4.25 MB	4.26 MB	⚠️ +10.7 kB

🔄 Shared (bundler-independent)

Runtimes

	Canary	PR	Change
app-page-exp...dev.js gzip	321 kB	320 kB	✓
app-page-exp..prod.js gzip	170 kB	170 kB	✓
app-page-tur...dev.js gzip	320 kB	320 kB	✓
app-page-tur..prod.js gzip	170 kB	170 kB	✓
app-page-tur...dev.js gzip	317 kB	316 kB	✓
app-page-tur..prod.js gzip	168 kB	168 kB	✓
app-page.run...dev.js gzip	317 kB	317 kB	✓
app-page.run..prod.js gzip	168 kB	168 kB	✓
app-route-ex...dev.js gzip	70.8 kB	70.8 kB	✓
app-route-ex..prod.js gzip	49.3 kB	49.3 kB	✓
app-route-tu...dev.js gzip	70.9 kB	70.9 kB	✓
app-route-tu..prod.js gzip	49.3 kB	49.3 kB	✓
app-route-tu...dev.js gzip	70.5 kB	70.5 kB	✓
app-route-tu..prod.js gzip	49 kB	49 kB	✓
app-route.ru...dev.js gzip	70.4 kB	70.4 kB	✓
app-route.ru..prod.js gzip	49 kB	49 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	43.2 kB	43.2 kB	✓
pages-api-tu..prod.js gzip	32.9 kB	32.9 kB	✓
pages-api.ru...dev.js gzip	43.2 kB	43.2 kB	✓
pages-api.ru..prod.js gzip	32.9 kB	32.9 kB	✓
pages-turbo....dev.js gzip	52.6 kB	52.6 kB	✓
pages-turbo...prod.js gzip	38.5 kB	38.5 kB	✓
pages.runtim...dev.js gzip	52.6 kB	52.6 kB	✓
pages.runtim..prod.js gzip	38.5 kB	38.5 kB	✓
server.runti..prod.js gzip	61.9 kB	61.9 kB	✓
Total	2.83 MB	2.83 MB	✅ -2.53 kB

📝 Changed Files (8 files)

Files with changes:

app-page-exp..ntime.dev.js
app-page-exp..time.prod.js
app-page-tur..ntime.dev.js
app-page-tur..time.prod.js
app-page-tur..ntime.dev.js
app-page-tur..time.prod.js
app-page.runtime.dev.js
app-page.runtime.prod.js

View diffs

app-page-exp..ntime.dev.js

failed to diff

app-page-exp..time.prod.js

failed to diff

app-page-tur..ntime.dev.js

failed to diff

app-page-tur..time.prod.js

failed to diff

app-page-tur..ntime.dev.js

failed to diff

app-page-tur..time.prod.js

failed to diff

app-page.runtime.dev.js

failed to diff

app-page.runtime.prod.js

failed to diff

📎 Tarball URL

https://vercel-packages.vercel.app/next/commits/424770b1a54c88efe52b56e21e142bd8c1b0d83c/next

nextjs-bot · 2026-03-01T03:45:35Z

Tests Passed

chatgpt-codex-connector

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 4db6f5ced9

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

Open a pull request for review
Mark a draft as ready
Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

chatgpt-codex-connector · 2026-03-01T07:38:02Z

packages/next/src/server/app-render/app-render.tsx

  // base-server will strip them to opt into different rendering behavior.
  const parsedRequestHeaders = parseRequestHeaders(req.headers, {
-    isRoutePPREnabled: renderOpts.experimental.isRoutePPREnabled === true,
+    isRoutePPREnabled: renderOpts.cacheComponents === true,


Keep edge requests out of PPR header parsing

renderToHTMLOrFlight now feeds parseRequestHeaders with isRoutePPREnabled derived from renderOpts.cacheComponents, which makes edge app requests look PPR-enabled whenever cacheComponents is on. Before this change, the edge template explicitly set experimental.isRoutePPREnabled to false, so edge stayed on the non-PPR behavior. That matters because this repo explicitly treats cache-components/PPR as unsupported on edge (see next-swc-loader.ts and cache-signal.ts), so routing edge requests through PPR-specific parsing/render behavior can trigger unsupported runtime paths for edge deployments.

Useful? React with 👍 / 👎.

Edge not available in Cache Components

…h cases After PR #90713 removed the rendering branch that creates `prerender-ppr` stores, no code ever creates a store with `type: 'prerender-ppr'`. All switch cases handling it are dead code. - Delete `PrerenderStorePPR` interface and remove from `PrerenderStore` union - Remove 78 `case 'prerender-ppr':` switch cases across 28 files - Simplify `Postpone` component (dynamicTracking is always null now) - Remove dead `postponeWithTracking()` call sites only reachable from prerender-ppr - Clean up now-unused imports and dead functions

unstubbable · 2026-03-04T12:24:40Z

packages/next/src/server/app-render/app-render.tsx

  // base-server will strip them to opt into different rendering behavior.
  const parsedRequestHeaders = parseRequestHeaders(req.headers, {
-    isRoutePPREnabled: renderOpts.experimental.isRoutePPREnabled === true,
+    isRoutePPREnabled: renderOpts.cacheComponents === true,


Rename the option in ParseRequestHeadersOptions as well.

…anch Remove the `isRoutePPREnabled` field from `RenderOptsPartial.experimental` and all code gated behind it. Since `cacheComponents` is the only way to enable PPR, the `isRoutePPREnabled`-gated rendering branch in app-render was dead code (~240 lines deleted). In the cache layer, rename the field to `isCacheComponentsEnabled` since file-system-cache still needs the signal. In the render pipeline, replace reads with `renderOpts.cacheComponents`.

#90713 (comment)

vercel · 2026-03-04T15:04:10Z

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
next.js	Error		Mar 4, 2026 3:04pm

…h cases After PR #90713 removed the rendering branch that creates `prerender-ppr` stores, no code ever creates a store with `type: 'prerender-ppr'`. All switch cases handling it are dead code. - Delete `PrerenderStorePPR` interface and remove from `PrerenderStore` union - Remove 78 `case 'prerender-ppr':` switch cases across 28 files - Simplify `Postpone` component (dynamicTracking is always null now) - Remove dead `postponeWithTracking()` call sites only reachable from prerender-ppr - Clean up now-unused imports and dead functions

…90721) Stacked on #90713 This PR removes `prerender-ppr` case handling in the codebase. Verified deployment tests pass on CI: https://github.com/vercel/next.js/actions/runs/22539297668

…d PPR branch (#90713)" This reverts commit 8dd8a95.

…anch (#90713) Stacked on #90704 This PR replaces `experimental.isRoutePPREnabled` render options with `cacheComponents` and removes unused code. Verified deployment tests pass on CI: https://github.com/vercel/next.js/actions/runs/22536405880

…90721) Stacked on #90713 This PR removes `prerender-ppr` case handling in the codebase. Verified deployment tests pass on CI: https://github.com/vercel/next.js/actions/runs/22539297668

nextjs-bot added created-by: Next.js team PRs by the Next.js team. type: next labels Mar 1, 2026

devjiwonchoi changed the base branch from canary to jiwon-2026-02-28/pr-89648-review March 1, 2026 04:29

devjiwonchoi force-pushed the jiwon-2026-03-01/segment-explorer branch from f467532 to aa68e3e Compare March 1, 2026 04:29

nextjs-bot added the create-next-app Related to our CLI tool for quickly starting a new Next.js application. label Mar 1, 2026

devjiwonchoi force-pushed the jiwon-2026-03-01/segment-explorer branch 3 times, most recently from 93ae32f to b2e4a2a Compare March 1, 2026 04:56

devjiwonchoi removed the create-next-app Related to our CLI tool for quickly starting a new Next.js application. label Mar 1, 2026

devjiwonchoi force-pushed the jiwon-2026-03-01/segment-explorer branch 2 times, most recently from 2d3a810 to 4db6f5c Compare March 1, 2026 05:00

devjiwonchoi marked this pull request as ready for review March 1, 2026 07:30

chatgpt-codex-connector bot reviewed Mar 1, 2026

View reviewed changes

devjiwonchoi mentioned this pull request Mar 1, 2026

Remove PrerenderStorePPR type and all prerender-ppr switch cases #90721

Merged

devjiwonchoi requested a review from unstubbable March 1, 2026 08:17

unstubbable approved these changes Mar 4, 2026

View reviewed changes

Base automatically changed from jiwon-2026-02-28/pr-89648-review to canary March 4, 2026 14:56

devjiwonchoi force-pushed the jiwon-2026-03-01/segment-explorer branch from 4db6f5c to d0635b0 Compare March 4, 2026 15:00

Rename isRoutePPREnabled to isCacheComponentsEnabled

424770b

#90713 (comment)

devjiwonchoi enabled auto-merge (squash) March 4, 2026 15:03

vercel bot had a problem deploying to Preview March 4, 2026 15:04 Failure

devjiwonchoi merged commit 8dd8a95 into canary Mar 4, 2026
282 of 285 checks passed

devjiwonchoi deleted the jiwon-2026-03-01/segment-explorer branch March 4, 2026 15:43

unstubbable added a commit that referenced this pull request Mar 5, 2026

Revert "Remove isRoutePPREnabled from render options and delete dea…

2fa7fb2

…d PPR branch (#90713)" This reverts commit 8dd8a95.

unstubbable added a commit that referenced this pull request Mar 5, 2026

Revert "Remove isRoutePPREnabled from render options and delete dea…

4981ff6

…d PPR branch (#90713)" This reverts commit 8dd8a95.

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Remove `isRoutePPREnabled` from render options and delete dead PPR branch#90713

Remove `isRoutePPREnabled` from render options and delete dead PPR branch#90713
devjiwonchoi merged 2 commits intocanaryfrom
jiwon-2026-03-01/segment-explorer

devjiwonchoi commented Mar 1, 2026 •

edited

Loading

Uh oh!

nextjs-bot commented Mar 1, 2026 •

edited

Loading

⚡ Dev Server

📦 Dev Server (Webpack)

⚡ Production Builds

📦 Production Builds (Webpack)

Bundle Sizes

⚡ Turbopack

📦 Webpack

🔄 Shared (bundler-independent)

Uh oh!

nextjs-bot commented Mar 1, 2026 •

edited

Loading

Uh oh!

chatgpt-codex-connector bot left a comment

Uh oh!

chatgpt-codex-connector bot Mar 1, 2026

Uh oh!

devjiwonchoi Mar 1, 2026

Uh oh!

unstubbable Mar 4, 2026

Uh oh!

vercel bot commented Mar 4, 2026 •

edited

Loading

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

3 participants

Conversation

devjiwonchoi commented Mar 1, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

nextjs-bot commented Mar 1, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Stats from current PR

🟢 1 improvement

⚡ Dev Server

📦 Dev Server (Webpack)

⚡ Production Builds

📦 Production Builds (Webpack)

Bundle Sizes

⚡ Turbopack

📦 Webpack

🔄 Shared (bundler-independent)

Uh oh!

nextjs-bot commented Mar 1, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Tests Passed

Uh oh!

chatgpt-codex-connector bot left a comment

Choose a reason for hiding this comment

💡 Codex Review

Uh oh!

chatgpt-codex-connector bot Mar 1, 2026

Choose a reason for hiding this comment

Uh oh!

devjiwonchoi Mar 1, 2026

Choose a reason for hiding this comment

Uh oh!

unstubbable Mar 4, 2026

Choose a reason for hiding this comment

Uh oh!

vercel bot commented Mar 4, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

3 participants

devjiwonchoi commented Mar 1, 2026 •

edited

Loading

nextjs-bot commented Mar 1, 2026 •

edited

Loading

nextjs-bot commented Mar 1, 2026 •

edited

Loading

vercel bot commented Mar 4, 2026 •

edited

Loading