Turbopack: Store task error as pointer to the source error by sokra · Pull Request #89293 · vercel/next.js

sokra · 2026-01-30T14:50:30Z

Store task error as pointer to the source error

sokra · 2026-01-30T14:51:02Z

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codspeed-hq · 2026-01-30T15:12:08Z

Merging this PR will not alter performance

✅ 17 untouched benchmarks
⏩ 3 skipped benchmarks¹

_{Comparing sokra/refactor-error-storage (c2df444) with canary (dc35817)}

3 benchmarks were skipped, so the baseline results were used instead. If they were deleted from the codebase, click here and archive them to remove them from the performance reports. ↩

nextjs-bot · 2026-01-30T15:12:29Z

Stats from current PR

🟢 1 improvement

Metric	Canary	PR	Change	Trend
node_modules Size	467 MB	467 MB	🟢 233 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)	456ms	455ms	✓	▁▁▁▁▁
Cold (Ready in log)	441ms	440ms	✓	▆▅▂▆▅
Cold (First Request)	819ms	804ms	✓	██▁██
Warm (Listen)	456ms	456ms	✓	▁▁▁▁▁
Warm (Ready in log)	440ms	439ms	✓	▁▁▂▁▁
Warm (First Request)	334ms	333ms	✓	▁▅▅▅▅

📦 Dev Server (Webpack) (Legacy)

📦 Dev Server (Webpack)

Metric	Canary	PR	Change	Trend
Cold (Listen)	456ms	457ms	✓	▁▁▅▁▁
Cold (Ready in log)	437ms	435ms	✓	▃▄▅▃▄
Cold (First Request)	1.759s	1.762s	✓	▂▃▆▁▂
Warm (Listen)	455ms	455ms	✓	▁▁▅▁▁
Warm (Ready in log)	434ms	435ms	✓	▃▃▅▃▃
Warm (First Request)	1.774s	1.765s	✓	▂▃▅▂▂

⚡ Production Builds

Metric	Canary	PR	Change	Trend
Fresh Build	4.217s	4.171s	✓	▁▁▃▁▁
Cached Build	4.147s	4.169s	✓	▁▁▃▁▁

📦 Production Builds (Webpack) (Legacy)

📦 Production Builds (Webpack)

Metric	Canary	PR	Change	Trend
Fresh Build	13.764s	13.744s	✓	▂▃▅▁▁
Cached Build	13.862s	13.866s	✓	▂▃▅▁▁
node_modules Size	467 MB	467 MB	🟢 233 kB (0%)	▁▁▁▁▁

📦 Bundle Sizes

Bundle Sizes

⚡ Turbopack

Client

Main Bundles: **437 kB** → **437 kB** ⚠️ +146 B

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

Server

Middleware

	Canary	PR	Change
middleware-b..fest.js gzip	761 B	759 B	✓
Total	761 B	759 B	✅ -2 B

Build Details

Build Manifests

	Canary	PR	Change
_buildManifest.js gzip	452 B	452 B	✓
Total	452 B	452 B	✓

📦 Webpack

Client

Main Bundles

	Canary	PR	Change
5528-HASH.js gzip	5.47 kB	N/A	-
6280-HASH.js gzip	57 kB	N/A	-
6335.HASH.js gzip	169 B	N/A	-
912-HASH.js gzip	4.53 kB	N/A	-
e8aec2e4-HASH.js gzip	62.5 kB	N/A	-
framework-HASH.js gzip	59.7 kB	59.7 kB	✓
main-app-HASH.js gzip	256 B	253 B	🟢 3 B (-1%)
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	4.53 kB	-
2889.HASH.js gzip	N/A	169 B	-
5602-HASH.js gzip	N/A	5.49 kB	-
6948ada0-HASH.js gzip	N/A	62.5 kB	-
9544-HASH.js gzip	N/A	57.6 kB	-
Total	230 kB	231 kB	⚠️ +592 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	2.49 kB	2.49 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	7.97 kB	7.97 kB	✅ -1 B

Server

Edge SSR

	Canary	PR	Change
edge-ssr.js gzip	126 kB	126 kB	✓
page.js gzip	249 kB	249 kB	✓
Total	375 kB	376 kB	⚠️ +165 B

Middleware

	Canary	PR	Change
middleware-b..fest.js gzip	614 B	615 B	✓
middleware-r..fest.js gzip	156 B	155 B	✓
middleware.js gzip	33.3 kB	33.2 kB	✓
edge-runtime..pack.js gzip	842 B	842 B	✓
Total	34.9 kB	34.8 kB	✅ -57 B

Build Details

Build Manifests

	Canary	PR	Change
_buildManifest.js gzip	733 B	735 B	✓
Total	733 B	735 B	⚠️ +2 B

Build Cache

	Canary	PR	Change
0.pack gzip	3.84 MB	3.85 MB	🔴 +11.8 kB (+0%)
index.pack gzip	104 kB	104 kB	✓
index.pack.old gzip	102 kB	104 kB	🔴 +2.08 kB (+2%)
Total	4.04 MB	4.06 MB	⚠️ +14.2 kB

🔄 Shared (bundler-independent)

Runtimes

	Canary	PR	Change
app-page-exp...dev.js gzip	316 kB	315 kB	✓
app-page-exp..prod.js gzip	168 kB	167 kB	✓
app-page-tur...dev.js gzip	315 kB	315 kB	✓
app-page-tur..prod.js gzip	167 kB	167 kB	✓
app-page-tur...dev.js gzip	312 kB	312 kB	✓
app-page-tur..prod.js gzip	166 kB	166 kB	✓
app-page.run...dev.js gzip	312 kB	312 kB	✓
app-page.run..prod.js gzip	166 kB	166 kB	✓
app-route-ex...dev.js gzip	70.5 kB	70.5 kB	✓
app-route-ex..prod.js gzip	49 kB	49 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-tu...dev.js gzip	70.1 kB	70.1 kB	✓
app-route-tu..prod.js gzip	48.8 kB	48.8 kB	✓
app-route.ru...dev.js gzip	70.1 kB	70.1 kB	✓
app-route.ru..prod.js gzip	48.8 kB	48.7 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	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	43.1 kB	✓
pages-api.ru..prod.js gzip	32.8 kB	32.8 kB	✓
pages-turbo....dev.js gzip	52.5 kB	52.5 kB	✓
pages-turbo...prod.js gzip	39.4 kB	39.4 kB	✓
pages.runtim...dev.js gzip	52.5 kB	52.5 kB	✓
pages.runtim..prod.js gzip	39.4 kB	39.3 kB	✓
server.runti..prod.js gzip	62.7 kB	62.7 kB	✓
Total	2.8 MB	2.8 MB	✅ -1.45 kB

📝 Changed Files (24 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
app-route-ex..ntime.dev.js
app-route-ex..time.prod.js
app-route-tu..ntime.dev.js
app-route-tu..time.prod.js
app-route-tu..ntime.dev.js
app-route-tu..time.prod.js
app-route.runtime.dev.js
app-route.ru..time.prod.js
pages-api-tu..ntime.dev.js
pages-api-tu..time.prod.js
pages-api.runtime.dev.js
pages-api.ru..time.prod.js
... and 4 more

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nextjs-bot · 2026-01-30T15:41:10Z

Tests Passed

lukesandberg

this is pretty cool! nice work

sokra · 2026-02-12T05:37:40Z

Merge activity

Feb 12, 5:37 AM UTC: @sokra merged this pull request with Graphite.

nextjs-bot added created-by: Turbopack team PRs by the Turbopack team. Turbopack Related to Turbopack with Next.js. labels Jan 30, 2026

sokra mentioned this pull request Jan 30, 2026

Turbopack: improve print_cache_item_size #89279

Merged

sokra mentioned this pull request Jan 30, 2026

Turbopack: Move PrettyPrintError to turbo_tasks and add tests #89280

Merged

sokra force-pushed the sokra/refactor-error-storage branch from 1d0d04e to 93c28a2 Compare January 30, 2026 15:26

sokra force-pushed the sokra/pretty-print-error branch from 5f0df7a to 1332f0e Compare January 30, 2026 15:26

sokra force-pushed the sokra/pretty-print-error branch 2 times, most recently from 07a5442 to 062bfa0 Compare January 30, 2026 17:59

sokra force-pushed the sokra/refactor-error-storage branch from 93c28a2 to bb16933 Compare January 30, 2026 17:59

graphite-app Bot changed the base branch from sokra/pretty-print-error to graphite-base/89293 January 31, 2026 00:29

sokra changed the title ~~fixup! add test case for error display~~ Turbopack: Store task error as pointer to the source error Feb 2, 2026

sokra force-pushed the sokra/refactor-error-storage branch from bb16933 to bcaefd3 Compare February 3, 2026 11:41

sokra force-pushed the graphite-base/89293 branch from 062bfa0 to 7437fed Compare February 3, 2026 11:41

sokra changed the base branch from graphite-base/89293 to canary February 3, 2026 11:42

sokra force-pushed the sokra/refactor-error-storage branch from bcaefd3 to 923d041 Compare February 9, 2026 12:28

sokra marked this pull request as ready for review February 9, 2026 12:30

sokra requested a review from lukesandberg February 9, 2026 12:30

sokra added 4 commits February 10, 2026 07:47

Store task error as pointer to the source error

e9e3749

clippy

c74ad65

Revert accidental default feature flag for print_cache_item_size

c53e162

add comments

b6cd9ff

sokra force-pushed the sokra/refactor-error-storage branch from 923d041 to b6cd9ff Compare February 10, 2026 07:37

sokra requested a review from bgw February 10, 2026 20:26

lukesandberg approved these changes Feb 11, 2026

View reviewed changes

Comment thread turbopack/crates/turbo-tasks-backend/src/backend/mod.rs

Comment thread turbopack/crates/turbo-tasks-backend/src/backend/mod.rs Outdated

sokra added 2 commits February 11, 2026 21:14

Update mod.rs

9af8d0d

Update mod.rs

c2df444

sokra merged commit d41c50b into canary Feb 12, 2026
293 of 295 checks passed

sokra deleted the sokra/refactor-error-storage branch February 12, 2026 05:37

github-actions Bot added the locked label Feb 26, 2026

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Turbopack: Store task error as pointer to the source error#89293

Turbopack: Store task error as pointer to the source error#89293
sokra merged 6 commits into
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📦 Production Builds (Webpack)

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Merging this PR will not alter performance

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Stats from current PR

🟢 1 improvement

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