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[core] Fix e2e failure reporting under vitest 4 and preserve fetch error causes - #2355

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peter/e2e-failure-diagnostics
Jun 11, 2026
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[core] Fix e2e failure reporting under vitest 4 and preserve fetch error causes#2355
VaguelySerious merged 1 commit into
mainfrom
peter/e2e-failure-diagnostics

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Summary

Three fixes that stop e2e failure information from being destroyed before anyone can look at it. This is groundwork for debugging the chronic E2E Vercel Prod flakes — today most of those failures surface as Error: STACK_TRACE_ERROR or a bare TypeError: fetch failed, neither of which is actionable.

1. github-reporter.ts: port to the vitest 4 reporter API

The reporter relied on the onFinished hook, which vitest 4 no longer calls. Since the vitest upgrade it has been silently dead: the e2e-failures-*.json sidecar was never written (it's listed in the CI artifact upload paths but absent from every recent artifact), and the file-linked ::error annotations were never emitted. Ported to onTestRunEnd / TestModule traversal.

2. aggregate-e2e-results.js: recover real failure messages for timeouts

vitest's JSON reporter serializes only error stacks. For test timeouts, the stack is the task-collection stack, whose first line is Error: STACK_TRACE_ERROR — the actual Test timed out in 60000ms message is dropped entirely (it appears nowhere in the JSON output). The aggregation script now falls back to the real error message from the failures sidecar (carried via error.message by the fixed reporter) when the vitest message is useless.

3. utils.ts: preserve undici fetch error causes

Network-level failures throw TypeError: fetch failed with the actual cause (ECONNRESET, ETIMEDOUT, DNS, ...) on error.cause, and no indication of which URL failed. Reporters don't serialize either. The e2e suite now wraps globalThis.fetch (test process only) and enriches the error in place:

before: TypeError: fetch failed
after: TypeError: fetch failed (POST https://workbench-…vercel.dev/api/trigger — cause: ECONNRESET)

Validation

Ran a scratch test file with all three failure modes (timeout, network failure, assertion) through the exact CI reporter invocation:

  • failures sidecar is written again with real messages (Test timed out in 1500ms.)
  • annotations carry the enriched messages
  • the step-summary script renders the real message instead of STACK_TRACE_ERROR

No published package code is touched (e2e harness + CI scripts only), hence the empty changeset.

🤖 Generated with Claude Code

The custom github-reporter relied on the onFinished reporter hook, which
vitest 4 no longer calls — so the e2e-failures sidecar was never written
and file-linked annotations were never emitted. Port it to onTestRunEnd.
Test timeouts surfaced as 'Error: STACK_TRACE_ERROR' in summaries because
vitest's JSON reporter serializes only error stacks, and for timeouts the
stack is the task-collection stack. The aggregation script now prefers the
real error message from the failures sidecar.
Network failures surfaced as bare 'TypeError: fetch failed'. The e2e suite
now enriches these in place with the request method, URL, and undici cause
code (ECONNRESET, ETIMEDOUT, ...).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
@VaguelySerious
VaguelySerious requested a review from a team as a code ownerJune 11, 2026 10:10
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🦋 Changeset detected

Latest commit: 9ca1ae3

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 0 packages

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📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.043s (~)1.006s (~)0.963s101.00x
💻 LocalNitro0.044s (+2.8%)1.006s (~)0.962s101.02x
💻 LocalNext.js (Turbopack)0.059s (+8.0% 🔺)1.006s (~)0.947s101.38x
🐘 PostgresExpress0.065s (-1.5%)1.014s (~)0.949s101.52x
🐘 PostgresNitro0.068s (+8.2% 🔺)1.013s (~)0.945s101.59x
🐘 PostgresNext.js (Turbopack)0.089s (+27.0% 🔺)1.030s (+1.7%)0.941s102.07x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro0.300s (+14.9% 🔺)2.088s (-14.3% 🟢)1.788s101.00x
▲ VercelNext.js (Turbopack)0.386s (+17.3% 🔺)2.406s (+2.8%)2.019s101.29x
▲ VercelExpress0.391s (+43.4% 🔺)1.911s (-29.6% 🟢)1.521s101.30x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

workflow with 1 step

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.091s (-0.5%)2.006s (~)0.916s101.00x
💻 LocalExpress1.093s (-0.7%)2.006s (~)0.913s101.00x
🐘 PostgresExpress1.112s (+1.8%)2.012s (~)0.900s101.02x
🐘 PostgresNitro1.116s (~)2.010s (~)0.894s101.02x
💻 LocalNext.js (Turbopack)1.130s (+1.9%)2.007s (~)0.877s101.04x
🐘 PostgresNext.js (Turbopack)1.132s (-0.9%)2.008s (~)0.876s101.04x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express1.588s (~)3.821s (+7.0% 🔺)2.232s101.00x
▲ VercelNitro1.650s (+5.4% 🔺)3.513s (~)1.863s101.04x
▲ VercelNext.js (Turbopack)1.808s (+8.6% 🔺)3.828s (-6.1% 🟢)2.019s101.14x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro10.487s (-0.6%)11.022s (~)0.535s31.00x
💻 LocalExpress10.521s (~)11.021s (~)0.500s31.00x
🐘 PostgresExpress10.586s (-1.2%)11.025s (-2.9%)0.439s31.01x
🐘 PostgresNitro10.594s (~)11.018s (~)0.424s31.01x
💻 LocalNext.js (Turbopack)10.767s (+1.5%)11.022s (~)0.255s31.03x
🐘 PostgresNext.js (Turbopack)10.814s (~)11.347s (+3.0%)0.533s31.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express13.367s (+1.6%)15.148s (-2.0%)1.780s21.00x
▲ VercelNitro13.812s (+3.7%)15.266s (-2.1%)1.454s21.03x
▲ VercelNext.js (Turbopack)14.204s (+5.2% 🔺)16.075s (~)1.871s21.06x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro13.716s (~)14.027s (~)0.311s51.00x
💻 LocalExpress13.720s (-1.3%)14.026s (-1.4%)0.306s51.00x
🐘 PostgresNitro13.894s (~)14.019s (~)0.125s51.01x
🐘 PostgresExpress13.979s (+1.0%)14.222s (~)0.244s51.02x
💻 LocalNext.js (Turbopack)14.314s (+2.0%)15.029s (+2.7%)0.715s41.04x
🐘 PostgresNext.js (Turbopack)14.649s (~)15.020s (~)0.370s41.07x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express21.128s (-17.1% 🟢)25.412s (-6.7% 🟢)4.284s31.00x
▲ VercelNitro21.318s (-16.5% 🟢)22.945s (-16.9% 🟢)1.627s31.01x
▲ VercelNext.js (Turbopack)21.950s (-14.0% 🟢)23.847s (-12.3% 🟢)1.897s31.04x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro12.403s (~)13.025s (~)0.622s71.00x
💻 LocalExpress12.446s (-1.2%)13.024s (~)0.577s71.00x
🐘 PostgresNitro12.541s (-1.6%)13.021s (~)0.480s71.01x
🐘 PostgresExpress12.686s (~)13.024s (-2.2%)0.337s71.02x
💻 LocalNext.js (Turbopack)13.524s (+4.4%)14.029s (+5.4% 🔺)0.505s71.09x
🐘 PostgresNext.js (Turbopack)14.272s (+3.7%)15.036s (+7.3% 🔺)0.764s61.15x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro29.237s (+0.6%)31.600s (+0.7%)2.363s31.00x
▲ VercelExpress29.351s (-8.5% 🟢)31.658s (-7.5% 🟢)2.306s31.00x
▲ VercelNext.js (Turbopack)31.628s (+6.8% 🔺)34.299s (+7.7% 🔺)2.671s31.08x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.all with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.173s (-7.1% 🟢)2.006s (~)0.833s151.00x
🐘 PostgresExpress1.194s (-0.5%)2.008s (-0.7%)0.815s151.02x
🐘 PostgresNitro1.195s (~)2.007s (~)0.812s151.02x
💻 LocalNitro1.234s (+1.8%)2.005s (~)0.771s151.05x
💻 LocalNext.js (Turbopack)1.301s (+6.3% 🔺)2.006s (~)0.705s151.11x
🐘 PostgresNext.js (Turbopack)1.320s (+5.5% 🔺)2.039s (+1.6%)0.719s151.13x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express2.504s (-9.5% 🟢)4.094s (-13.3% 🟢)1.590s81.00x
▲ VercelNitro2.517s (-9.1% 🟢)3.950s (-9.0% 🟢)1.433s81.00x
▲ VercelNext.js (Turbopack)2.789s (+3.8%)4.662s (+10.5% 🔺)1.873s71.11x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.252s (-0.6%)2.007s (~)0.755s151.00x
🐘 PostgresExpress1.319s (-0.6%)2.076s (+3.0%)0.757s151.05x
💻 LocalExpress1.622s (-13.8% 🟢)2.006s (-9.7% 🟢)0.384s151.30x
🐘 PostgresNext.js (Turbopack)1.649s (+17.0% 🔺)2.181s (+8.6% 🔺)0.532s141.32x
💻 LocalNitro1.727s (+1.3%)2.006s (-3.2%)0.278s151.38x
💻 LocalNext.js (Turbopack)1.770s (+2.5%)2.073s (+3.3%)0.303s151.41x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express3.485s (-14.7% 🟢)5.780s (-6.3% 🟢)2.295s61.00x
▲ VercelNitro3.504s (-13.9% 🟢)5.276s (-15.0% 🟢)1.773s61.01x
▲ VercelNext.js (Turbopack)3.912s (-4.7%)5.887s (-4.1%)1.975s61.12x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.394s (-0.9%)2.007s (~)0.613s151.00x
🐘 PostgresExpress1.436s (+3.0%)2.008s (~)0.571s151.03x
🐘 PostgresNext.js (Turbopack)1.782s (+1.3%)2.314s (+0.8%)0.532s131.28x
💻 LocalExpress3.990s (-24.7% 🟢)4.440s (-26.2% 🟢)0.450s72.86x
💻 LocalNitro4.648s (-1.5%)5.178s (+3.3%)0.530s63.33x
💻 LocalNext.js (Turbopack)4.694s (+6.8% 🔺)5.179s (+3.4%)0.485s63.37x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Next.js (Turbopack)5.879s (~)8.089s (+4.0%)2.210s41.00x
▲ VercelNitro6.034s (-10.4% 🟢)7.827s (-10.1% 🟢)1.794s41.03x
▲ VercelExpress7.226s (+22.4% 🔺)9.576s (+21.3% 🔺)2.351s41.23x

🔍 Observability: Next.js (Turbopack) | Nitro | Express

Promise.race with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.185s (-1.5%)2.012s (~)0.827s151.00x
🐘 PostgresNitro1.186s (-1.2%)2.009s (~)0.824s151.00x
💻 LocalNext.js (Turbopack)1.352s (+3.6%)2.006s (~)0.654s151.14x
🐘 PostgresNext.js (Turbopack)1.398s (+10.4% 🔺)2.176s (+8.3% 🔺)0.778s141.18x
💻 LocalExpress1.486s (-10.3% 🟢)2.006s (-3.3%)0.520s151.25x
💻 LocalNitro1.554s (+0.7%)2.007s (~)0.452s151.31x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.431s (-9.0% 🟢)3.819s (-11.9% 🟢)1.388s81.00x
▲ VercelNext.js (Turbopack)2.726s (-37.7% 🟢)4.406s (-30.0% 🟢)1.680s71.12x
▲ VercelExpress2.760s (+7.5% 🔺)4.377s (+4.2%)1.616s71.14x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

Promise.race with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.254s (-1.6%)2.008s (~)0.754s151.00x
🐘 PostgresExpress1.270s (+2.2%)2.008s (~)0.738s151.01x
🐘 PostgresNext.js (Turbopack)1.469s (+5.2% 🔺)2.152s (+7.2% 🔺)0.683s141.17x
💻 LocalExpress1.793s (-15.6% 🟢)2.149s (-17.1% 🟢)0.355s141.43x
💻 LocalNext.js (Turbopack)2.067s (+2.3%)2.735s (+9.1% 🔺)0.668s111.65x
💻 LocalNitro2.130s (+21.2% 🔺)2.508s (+21.0% 🔺)0.379s121.70x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express3.577s (-2.7%)5.258s (-6.3% 🟢)1.681s61.00x
▲ VercelNitro3.830s (-6.5% 🟢)5.397s (-10.1% 🟢)1.567s61.07x
▲ VercelNext.js (Turbopack)3.947s (-12.7% 🟢)5.691s (-7.7% 🟢)1.744s61.10x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.392s (-4.8%)2.007s (~)0.615s151.00x
🐘 PostgresExpress1.410s (-6.0% 🟢)2.007s (-16.3% 🟢)0.598s151.01x
🐘 PostgresNext.js (Turbopack)1.951s (+17.8% 🔺)2.504s (+20.7% 🔺)0.552s131.40x
💻 LocalExpress4.581s (-21.9% 🟢)5.179s (-16.6% 🟢)0.598s63.29x
💻 LocalNext.js (Turbopack)5.452s (+5.6% 🔺)6.015s (~)0.562s53.92x
💻 LocalNitro5.717s (+20.5% 🔺)6.014s (+12.5% 🔺)0.297s54.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.513s (+11.8% 🔺)7.127s (+5.8% 🔺)1.614s51.00x
▲ VercelNext.js (Turbopack)5.755s (-0.6%)7.799s (+2.9%)2.044s41.04x
▲ VercelExpress7.013s (+38.2% 🔺)9.063s (+36.7% 🔺)2.050s41.27x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro0.566s (-7.1% 🟢)1.006s (~)0.441s601.00x
💻 LocalExpress0.583s (-11.1% 🟢)1.005s (-3.4%)0.421s601.03x
💻 LocalNitro0.587s (-27.0% 🟢)1.005s (-16.6% 🟢)0.418s601.04x
🐘 PostgresExpress0.610s (-8.6% 🟢)1.024s (-2.3%)0.414s591.08x
💻 LocalNext.js (Turbopack)0.857s (+23.1% 🔺)1.039s (+3.5%)0.182s581.52x
🐘 PostgresNext.js (Turbopack)0.941s (+15.9% 🔺)1.377s (+36.8% 🔺)0.436s451.66x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express5.939s (+8.0% 🔺)7.671s (+7.9% 🔺)1.733s81.00x
▲ VercelNitro6.056s (-18.8% 🟢)7.518s (-21.0% 🟢)1.462s81.02x
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Express | Nitro

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.394s (-1.6%)2.030s (+1.1%)0.636s451.00x
🐘 PostgresExpress1.435s (-6.6% 🟢)2.053s (-4.6%)0.618s441.03x
💻 LocalExpress1.477s (-7.2% 🟢)2.005s (-1.2%)0.528s451.06x
💻 LocalNitro1.489s (+1.7%)2.006s (~)0.517s451.07x
💻 LocalNext.js (Turbopack)2.089s (+20.8% 🔺)2.911s (+43.6% 🔺)0.823s311.50x
🐘 PostgresNext.js (Turbopack)2.145s (+10.4% 🔺)2.574s (+18.4% 🔺)0.429s361.54x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express14.723s (-10.1% 🟢)16.752s (-8.5% 🟢)2.029s61.00x
▲ VercelNitro14.762s (+11.7% 🔺)16.203s (+4.7%)1.441s61.00x
▲ VercelNext.js (Turbopack)15.199s (+2.9%)17.372s (+2.6%)2.173s61.03x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro2.774s (-4.8%)3.167s (-3.5%)0.393s381.00x
🐘 PostgresExpress2.779s (-4.6%)3.137s (-11.4% 🟢)0.359s391.00x
💻 LocalExpress3.137s (-8.3% 🟢)3.977s (-0.8%)0.840s311.13x
💻 LocalNitro3.348s (+4.4%)4.009s (~)0.661s301.21x
💻 LocalNext.js (Turbopack)4.238s (+13.7% 🔺)5.010s (+21.9% 🔺)0.773s241.53x
🐘 PostgresNext.js (Turbopack)4.304s (+11.5% 🔺)4.755s (+16.6% 🔺)0.451s261.55x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express30.799s (+6.8% 🔺)33.461s (+8.3% 🔺)2.661s41.00x
▲ VercelNitro31.020s (+4.2%)33.344s (+4.3%)2.324s41.01x
▲ VercelNext.js (Turbopack)31.973s (+18.5% 🔺)34.694s (+18.5% 🔺)2.721s41.04x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express0.221s (-12.2% 🟢)1.006s (~)0.785s601.00x
🐘 PostgresNitro0.225s (-4.5%)1.007s (~)0.782s601.02x
🐘 PostgresNext.js (Turbopack)0.289s (+2.5%)1.010s (~)0.721s601.31x
💻 LocalExpress0.414s (-11.0% 🟢)1.004s (~)0.590s601.87x
💻 LocalNitro0.418s (-1.6%)1.004s (~)0.587s601.89x
💻 LocalNext.js (Turbopack)0.588s (-3.7%)1.022s (-1.6%)0.434s592.66x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express2.424s (+9.6% 🔺)4.113s (~)1.689s151.00x
▲ VercelNitro2.586s (+10.3% 🔺)4.067s (-6.2% 🟢)1.480s151.07x
▲ VercelNext.js (Turbopack)2.760s (+25.5% 🔺)4.441s (+5.2% 🔺)1.681s141.14x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro0.345s (-6.9% 🟢)1.006s (~)0.661s901.00x
🐘 PostgresExpress0.364s (+7.4% 🔺)1.007s (~)0.643s901.05x
🐘 PostgresNext.js (Turbopack)0.612s (+26.9% 🔺)1.141s (+13.4% 🔺)0.528s791.77x
💻 LocalExpress2.041s (-6.8% 🟢)2.564s (-9.2% 🟢)0.522s365.91x
💻 LocalNitro2.142s (+3.8%)2.736s (+3.7%)0.594s336.20x
💻 LocalNext.js (Turbopack)2.281s (-6.9% 🟢)2.947s (-5.2% 🟢)0.665s316.61x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.706s (-87.0% 🟢)7.294s (-84.1% 🟢)1.588s131.00x
▲ VercelExpress5.789s (-86.6% 🟢)7.521s (-83.4% 🟢)1.732s121.01x
▲ VercelNext.js (Turbopack)6.444s (+2.8%)8.035s (-5.4% 🟢)1.592s121.13x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro0.683s (-3.4%)1.007s (~)0.324s1201.00x
🐘 PostgresExpress0.698s (+11.6% 🔺)1.007s (-4.6%)0.308s1201.02x
🐘 PostgresNext.js (Turbopack)1.251s (+27.7% 🔺)1.804s (+12.2% 🔺)0.553s681.83x
💻 LocalExpress8.852s (-14.2% 🟢)9.331s (-14.1% 🟢)0.479s1312.96x
💻 LocalNitro9.747s (+11.9% 🔺)10.277s (+10.1% 🔺)0.530s1214.27x
💻 LocalNext.js (Turbopack)10.651s (+3.3%)11.301s (~)0.650s1115.59x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express15.038s (-1.4%)17.353s (-0.8%)2.315s71.00x
▲ VercelNitro16.319s (-94.8% 🟢)18.256s (-94.2% 🟢)1.937s71.09x
▲ VercelNext.js (Turbopack)18.104s (-88.7% 🟢)20.071s (-87.6% 🟢)1.967s61.20x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Stream Benchmarks(includes TTFB metrics)
workflow with stream

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.151s (-1.5%)2.005s (~)0.010s (-25.0% 🟢)2.016s (~)0.866s101.00x
💻 LocalNitro1.159s (+0.7%)2.005s (~)0.010s (+4.0%)2.018s (~)0.859s101.01x
🐘 PostgresExpress1.172s (-1.8%)1.999s (~)0.001s (-96.8% 🟢)2.010s (-1.6%)0.838s101.02x
🐘 PostgresNitro1.180s (~)1.996s (~)0.001s (-14.3% 🟢)2.010s (~)0.831s101.03x
💻 LocalNext.js (Turbopack)1.201s (+2.8%)2.004s (~)0.010s (+3.0%)2.018s (~)0.817s101.04x
🐘 PostgresNext.js (Turbopack)1.368s (+10.8% 🔺)1.990s (-0.6%)0.055s (+3580.0% 🔺)2.082s (+3.5%)0.715s101.19x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.307s (+6.6% 🔺)3.590s (+5.1% 🔺)1.139s (+120.8% 🔺)5.133s (+14.9% 🔺)2.826s101.00x
▲ VercelNext.js (Turbopack)2.428s (+8.3% 🔺)3.703s (+4.3%)0.831s (-93.3% 🟢)5.003s (-69.7% 🟢)2.576s101.05x
▲ VercelExpress2.466s (+15.0% 🔺)3.846s (+12.8% 🔺)0.713s (+35.6% 🔺)5.057s (+13.7% 🔺)2.591s101.07x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

stream pipeline with 5 transform steps (1MB)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.548s (-5.4% 🟢)2.008s (~)0.012s (+5.7% 🔺)2.022s (~)0.474s301.00x
💻 LocalNitro1.573s (-9.7% 🟢)2.010s (~)0.013s (+38.7% 🔺)2.025s (-7.9% 🟢)0.451s301.02x
🐘 PostgresNitro1.617s (-2.8%)2.002s (~)0.005s (+29.1% 🔺)2.028s (~)0.411s301.04x
🐘 PostgresExpress1.626s (-6.4% 🟢)2.008s (-6.3% 🟢)0.005s (+64.3% 🔺)2.028s (-6.1% 🟢)0.402s301.05x
💻 LocalNext.js (Turbopack)1.715s (+4.6%)2.009s (~)0.011s (+12.9% 🔺)2.024s (~)0.308s301.11x
🐘 PostgresNext.js (Turbopack)2.571s (+45.8% 🔺)3.165s (+57.3% 🔺)0.004s (+4.4%)3.199s (+57.8% 🔺)0.628s191.66x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express6.232s (+8.2% 🔺)7.789s (+4.8%)0.300s (-15.3% 🟢)8.701s (+3.5%)2.470s71.00x
▲ VercelNitro6.288s (+9.4% 🔺)7.594s (~)0.222s (-34.4% 🟢)8.204s (-3.3%)1.915s81.01x
▲ VercelNext.js (Turbopack)7.670s (+20.4% 🔺)9.265s (+16.7% 🔺)0.184s (-49.0% 🟢)9.896s (+11.6% 🔺)2.226s81.23x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express0.721s (-26.2% 🟢)1.050s (-26.4% 🟢)0.000s (-75.4% 🟢)1.060s (-26.8% 🟢)0.339s571.00x
🐘 PostgresNitro0.733s (+1.5%)1.049s (+1.7%)0.000s (-66.1% 🟢)1.066s (+1.7%)0.332s571.02x
🐘 PostgresNext.js (Turbopack)1.323s (+58.9% 🔺)1.765s (+64.7% 🔺)0.000s (-100.0% 🟢)1.783s (+65.1% 🔺)0.460s341.84x
💻 LocalExpress1.347s (-9.2% 🟢)2.012s (~)0.000s (-40.0% 🟢)2.014s (~)0.668s301.87x
💻 LocalNitro1.419s (+4.9%)2.014s (~)0.000s (-60.0% 🟢)2.016s (~)0.596s301.97x
💻 LocalNext.js (Turbopack)1.484s (+2.5%)2.013s (~)0.000s (+12.5% 🔺)2.016s (~)0.532s302.06x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.169s (-12.0% 🟢)4.203s (-17.1% 🟢)0.000s (NaN%)4.575s (-18.7% 🟢)1.406s141.00x
▲ VercelNext.js (Turbopack)3.532s (+6.8% 🔺)4.818s (-1.6%)0.000s (NaN%)5.312s (-2.7%)1.780s121.11x
▲ VercelExpress3.592s (-11.5% 🟢)5.050s (-5.4% 🟢)0.000s (-100.0% 🟢)5.510s (-10.7% 🟢)1.917s111.13x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

fan-out fan-in 10 streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.505s (+6.7% 🔺)2.144s (+7.4% 🔺)0.000s (+Infinity% 🔺)2.187s (+8.7% 🔺)0.682s281.00x
🐘 PostgresExpress1.535s (-4.9%)2.254s (~)0.000s (NaN%)2.271s (~)0.736s271.02x
🐘 PostgresNext.js (Turbopack)2.514s (+45.5% 🔺)3.050s (+34.9% 🔺)0.000s (+Infinity% 🔺)3.065s (+35.1% 🔺)0.551s201.67x
💻 LocalNext.js (Turbopack)2.696s (-16.1% 🟢)3.340s (-14.3% 🟢)0.000s (-32.6% 🟢)3.343s (-14.3% 🟢)0.647s191.79x
💻 LocalExpress3.046s (-8.6% 🟢)3.836s (~)0.000s (-50.0% 🟢)3.839s (~)0.793s162.02x
💻 LocalNitro3.178s (+2.0%)4.028s (+3.4%)0.000s (+33.3% 🔺)4.031s (+3.3%)0.853s152.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.016s (-28.8% 🟢)6.393s (-25.4% 🟢)0.001s (+Infinity% 🔺)6.778s (-25.4% 🟢)1.762s91.00x
▲ VercelExpress5.111s (-19.1% 🟢)6.465s (-15.2% 🟢)0.000s (-70.4% 🟢)7.031s (-14.1% 🟢)1.920s91.02x
▲ VercelNext.js (Turbopack)5.804s (+12.3% 🔺)7.314s (+9.5% 🔺)0.000s (-100.0% 🟢)7.878s (+9.4% 🔺)2.074s81.16x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World🥇 Fastest FrameworkWins
💻 LocalExpress15/21
🐘 PostgresNitro13/21
▲ VercelExpress12/21
Fastest World by Framework

Winner determined by most benchmark wins

Framework🥇 Fastest WorldWins
Express🐘 Postgres12/21
Next.js (Turbopack)💻 Local12/21
Nitro🐘 Postgres14/21
Column Definitions
  • Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
  • TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
  • Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
  • Wall Time: Total testbench time (trigger workflow + poll for result)
  • Overhead: Testbench overhead (Wall Time - Workflow Time)
  • Samples: Number of benchmark iterations run
  • vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

  • 💻 Local: In-memory filesystem world (local development)
  • 🐘 Postgres: PostgreSQL database world (local development)
  • ▲ Vercel: Vercel production/preview deployment
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Redis + BullMQ: Community world (local development)
  • 🌐 Cloudflare: Community world (local development)
  • 🌐 MySQL: Community world (local development)
  • 🌐 Azure: Community world (local development)
  • 🌐 NATS JetStream: Community world (local development)
  • 🌐 Upstash: Community world (local development)

📋 View full workflow run

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🧪 E2E Test Results

All tests passed

Summary

PassedFailedSkippedTotal
✅ ▲ Vercel Production126602191485
✅ 💻 Local Development167102191890
✅ 📦 Local Production167102191890
✅ 🐘 Local Postgres167102191890
✅ 🪟 Windows13500135
✅ 📋 Other7690176945
Total7183010528235

Details by Category

✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro109026
✅ example109026
✅ express109026
✅ fastify109026
✅ hono109026
✅ nextjs-turbopack13302
✅ nextjs-webpack13302
✅ nitro109026
✅ nuxt109026
✅ sveltekit12807
✅ vite109026
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable110025
✅ express-stable110025
✅ fastify-stable110025
✅ hono-stable110025
✅ nextjs-turbopack-canary116019
✅ nextjs-turbopack-stable-lazy-discovery-disabled13500
✅ nextjs-turbopack-stable-lazy-discovery-enabled13500
✅ nextjs-webpack-canary116019
✅ nextjs-webpack-stable-lazy-discovery-disabled13500
✅ nextjs-webpack-stable-lazy-discovery-enabled13500
✅ nitro-stable110025
✅ nuxt-stable110025
✅ sveltekit-stable12906
✅ vite-stable110025
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable110025
✅ express-stable110025
✅ fastify-stable110025
✅ hono-stable110025
✅ nextjs-turbopack-canary116019
✅ nextjs-turbopack-stable-lazy-discovery-disabled13500
✅ nextjs-turbopack-stable-lazy-discovery-enabled13500
✅ nextjs-webpack-canary116019
✅ nextjs-webpack-stable-lazy-discovery-disabled13500
✅ nextjs-webpack-stable-lazy-discovery-enabled13500
✅ nitro-stable110025
✅ nuxt-stable110025
✅ sveltekit-stable12906
✅ vite-stable110025
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable110025
✅ express-stable110025
✅ fastify-stable110025
✅ hono-stable110025
✅ nextjs-turbopack-canary116019
✅ nextjs-turbopack-stable-lazy-discovery-disabled13500
✅ nextjs-turbopack-stable-lazy-discovery-enabled13500
✅ nextjs-webpack-canary116019
✅ nextjs-webpack-stable-lazy-discovery-disabled13500
✅ nextjs-webpack-stable-lazy-discovery-enabled13500
✅ nitro-stable110025
✅ nuxt-stable110025
✅ sveltekit-stable12906
✅ vite-stable110025
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack13500
✅ 📋 Other
AppPassedFailedSkipped
✅ e2e-local-dev-nest-stable110025
✅ e2e-local-dev-tanstack-start-110025
✅ e2e-local-postgres-nest-stable110025
✅ e2e-local-postgres-tanstack-start-110025
✅ e2e-local-prod-nest-stable110025
✅ e2e-local-prod-tanstack-start-110025
✅ e2e-vercel-prod-tanstack-start109026

📋 View full workflow run

@VaguelySerious
VaguelySerious merged commit 4e8a965 into mainJun 11, 2026
188 of 191 checks passed
@VaguelySerious
VaguelySerious deleted the peter/e2e-failure-diagnostics branch June 11, 2026 10:36
github-actionsBot added a commit that referenced this pull request Jun 11, 2026
…ses (#2355)
Signed-off-by: Peter Wielander <mittgfu@gmail.com>
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Backport PR opened against stable: #2357. (backport job run)

pranaygp added a commit that referenced this pull request Jun 11, 2026
…hook-ready
* origin-https/main: (119 commits)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
Prevent local tests from hanging (#2338)
feat(core): add optional namespace for queue topic prefix (#2305)
[web-shared] Show precise durations in the new trace viewer (#2335)
Validate unique workflow step IDs at build time (#2018)
Move run attributes into their own detail card (#2327)
[core] Forward-port stream reconnect to getReadable level (#2318)
[docs] Add "Step executed multiple times" error page (#2310)
Fix flickering on the detail panel when navigating the trace viewer (#2325)
Version Packages (beta) (#2254)
Patch vulnerable package dependencies (#2301)
Deprecate DurableAgent and update it with WorkflowAgent in v5 docs (#2285)
[codex] Fix partial world-local exclusive writes (#2296)
...
# Conflicts:
#	packages/core/src/runtime.ts
#	packages/core/src/runtime/suspension-handler.ts
pranaygp added a commit that referenced this pull request Jun 11, 2026
…t-race-eager-wait
* origin/main:
docs(observability): remove MVP implementation detail bullet (#2367)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
pranaygp added a commit that referenced this pull request Jun 11, 2026
…docs-run-idempotency
* origin-https/main: (115 commits)
[core] V2: unify wait+step queue dispatch in suspension processing (#1925)
fix(world-local,world-postgres): make duplicate hook_created idempotent (#2295)
docs(observability): remove MVP implementation detail bullet (#2367)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
Prevent local tests from hanging (#2338)
feat(core): add optional namespace for queue topic prefix (#2305)
[web-shared] Show precise durations in the new trace viewer (#2335)
Validate unique workflow step IDs at build time (#2018)
Move run attributes into their own detail card (#2327)
[core] Forward-port stream reconnect to getReadable level (#2318)
[docs] Add "Step executed multiple times" error page (#2310)
Fix flickering on the detail panel when navigating the trace viewer (#2325)
Version Packages (beta) (#2254)
...
# Conflicts:
#	docs/content/docs/v4/cookbook/advanced/child-workflows.mdx
#	docs/content/docs/v5/cookbook/advanced/child-workflows.mdx
#	docs/content/docs/v5/cookbook/agent-patterns/durable-agent.mdx
pranaygp added a commit that referenced this pull request Jun 11, 2026
* origin/main:
[core] V2: unify wait+step queue dispatch in suspension processing (#1925)
fix(world-local,world-postgres): make duplicate hook_created idempotent (#2295)
docs(observability): remove MVP implementation detail bullet (#2367)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
Prevent local tests from hanging (#2338)
feat(core): add optional namespace for queue topic prefix (#2305)
[web-shared] Show precise durations in the new trace viewer (#2335)
Validate unique workflow step IDs at build time (#2018)
Move run attributes into their own detail card (#2327)
[core] Forward-port stream reconnect to getReadable level (#2318)
[docs] Add "Step executed multiple times" error page (#2310)
Fix flickering on the detail panel when navigating the trace viewer (#2325)
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[core] Fix e2e failure reporting under vitest 4 and preserve fetch error causes by VaguelySerious · Pull Request #2355 · vercel/workflow · GitHub
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[core] Fix e2e failure reporting under vitest 4 and preserve fetch error causes - #2355

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VaguelySerious merged 1 commit into
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Jun 11, 2026
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[core] Fix e2e failure reporting under vitest 4 and preserve fetch error causes#2355
VaguelySerious merged 1 commit into
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peter/e2e-failure-diagnostics

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Summary

Three fixes that stop e2e failure information from being destroyed before anyone can look at it. This is groundwork for debugging the chronic E2E Vercel Prod flakes — today most of those failures surface as Error: STACK_TRACE_ERROR or a bare TypeError: fetch failed, neither of which is actionable.

1. github-reporter.ts: port to the vitest 4 reporter API

The reporter relied on the onFinished hook, which vitest 4 no longer calls. Since the vitest upgrade it has been silently dead: the e2e-failures-*.json sidecar was never written (it's listed in the CI artifact upload paths but absent from every recent artifact), and the file-linked ::error annotations were never emitted. Ported to onTestRunEnd / TestModule traversal.

2. aggregate-e2e-results.js: recover real failure messages for timeouts

vitest's JSON reporter serializes only error stacks. For test timeouts, the stack is the task-collection stack, whose first line is Error: STACK_TRACE_ERROR — the actual Test timed out in 60000ms message is dropped entirely (it appears nowhere in the JSON output). The aggregation script now falls back to the real error message from the failures sidecar (carried via error.message by the fixed reporter) when the vitest message is useless.

3. utils.ts: preserve undici fetch error causes

Network-level failures throw TypeError: fetch failed with the actual cause (ECONNRESET, ETIMEDOUT, DNS, ...) on error.cause, and no indication of which URL failed. Reporters don't serialize either. The e2e suite now wraps globalThis.fetch (test process only) and enriches the error in place:

before: TypeError: fetch failed
after: TypeError: fetch failed (POST https://workbench-…vercel.dev/api/trigger — cause: ECONNRESET)

Validation

Ran a scratch test file with all three failure modes (timeout, network failure, assertion) through the exact CI reporter invocation:

  • failures sidecar is written again with real messages (Test timed out in 1500ms.)
  • annotations carry the enriched messages
  • the step-summary script renders the real message instead of STACK_TRACE_ERROR

No published package code is touched (e2e harness + CI scripts only), hence the empty changeset.

🤖 Generated with Claude Code

The custom github-reporter relied on the onFinished reporter hook, which
vitest 4 no longer calls — so the e2e-failures sidecar was never written
and file-linked annotations were never emitted. Port it to onTestRunEnd.
Test timeouts surfaced as 'Error: STACK_TRACE_ERROR' in summaries because
vitest's JSON reporter serializes only error stacks, and for timeouts the
stack is the task-collection stack. The aggregation script now prefers the
real error message from the failures sidecar.
Network failures surfaced as bare 'TypeError: fetch failed'. The e2e suite
now enriches these in place with the request method, URL, and undici cause
code (ECONNRESET, ETIMEDOUT, ...).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
@VaguelySerious
VaguelySerious requested a review from a team as a code ownerJune 11, 2026 10:10
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🦋 Changeset detected

Latest commit: 9ca1ae3

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 0 packages

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📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.043s (~)1.006s (~)0.963s101.00x
💻 LocalNitro0.044s (+2.8%)1.006s (~)0.962s101.02x
💻 LocalNext.js (Turbopack)0.059s (+8.0% 🔺)1.006s (~)0.947s101.38x
🐘 PostgresExpress0.065s (-1.5%)1.014s (~)0.949s101.52x
🐘 PostgresNitro0.068s (+8.2% 🔺)1.013s (~)0.945s101.59x
🐘 PostgresNext.js (Turbopack)0.089s (+27.0% 🔺)1.030s (+1.7%)0.941s102.07x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro0.300s (+14.9% 🔺)2.088s (-14.3% 🟢)1.788s101.00x
▲ VercelNext.js (Turbopack)0.386s (+17.3% 🔺)2.406s (+2.8%)2.019s101.29x
▲ VercelExpress0.391s (+43.4% 🔺)1.911s (-29.6% 🟢)1.521s101.30x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

workflow with 1 step

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.091s (-0.5%)2.006s (~)0.916s101.00x
💻 LocalExpress1.093s (-0.7%)2.006s (~)0.913s101.00x
🐘 PostgresExpress1.112s (+1.8%)2.012s (~)0.900s101.02x
🐘 PostgresNitro1.116s (~)2.010s (~)0.894s101.02x
💻 LocalNext.js (Turbopack)1.130s (+1.9%)2.007s (~)0.877s101.04x
🐘 PostgresNext.js (Turbopack)1.132s (-0.9%)2.008s (~)0.876s101.04x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express1.588s (~)3.821s (+7.0% 🔺)2.232s101.00x
▲ VercelNitro1.650s (+5.4% 🔺)3.513s (~)1.863s101.04x
▲ VercelNext.js (Turbopack)1.808s (+8.6% 🔺)3.828s (-6.1% 🟢)2.019s101.14x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro10.487s (-0.6%)11.022s (~)0.535s31.00x
💻 LocalExpress10.521s (~)11.021s (~)0.500s31.00x
🐘 PostgresExpress10.586s (-1.2%)11.025s (-2.9%)0.439s31.01x
🐘 PostgresNitro10.594s (~)11.018s (~)0.424s31.01x
💻 LocalNext.js (Turbopack)10.767s (+1.5%)11.022s (~)0.255s31.03x
🐘 PostgresNext.js (Turbopack)10.814s (~)11.347s (+3.0%)0.533s31.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express13.367s (+1.6%)15.148s (-2.0%)1.780s21.00x
▲ VercelNitro13.812s (+3.7%)15.266s (-2.1%)1.454s21.03x
▲ VercelNext.js (Turbopack)14.204s (+5.2% 🔺)16.075s (~)1.871s21.06x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro13.716s (~)14.027s (~)0.311s51.00x
💻 LocalExpress13.720s (-1.3%)14.026s (-1.4%)0.306s51.00x
🐘 PostgresNitro13.894s (~)14.019s (~)0.125s51.01x
🐘 PostgresExpress13.979s (+1.0%)14.222s (~)0.244s51.02x
💻 LocalNext.js (Turbopack)14.314s (+2.0%)15.029s (+2.7%)0.715s41.04x
🐘 PostgresNext.js (Turbopack)14.649s (~)15.020s (~)0.370s41.07x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express21.128s (-17.1% 🟢)25.412s (-6.7% 🟢)4.284s31.00x
▲ VercelNitro21.318s (-16.5% 🟢)22.945s (-16.9% 🟢)1.627s31.01x
▲ VercelNext.js (Turbopack)21.950s (-14.0% 🟢)23.847s (-12.3% 🟢)1.897s31.04x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro12.403s (~)13.025s (~)0.622s71.00x
💻 LocalExpress12.446s (-1.2%)13.024s (~)0.577s71.00x
🐘 PostgresNitro12.541s (-1.6%)13.021s (~)0.480s71.01x
🐘 PostgresExpress12.686s (~)13.024s (-2.2%)0.337s71.02x
💻 LocalNext.js (Turbopack)13.524s (+4.4%)14.029s (+5.4% 🔺)0.505s71.09x
🐘 PostgresNext.js (Turbopack)14.272s (+3.7%)15.036s (+7.3% 🔺)0.764s61.15x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro29.237s (+0.6%)31.600s (+0.7%)2.363s31.00x
▲ VercelExpress29.351s (-8.5% 🟢)31.658s (-7.5% 🟢)2.306s31.00x
▲ VercelNext.js (Turbopack)31.628s (+6.8% 🔺)34.299s (+7.7% 🔺)2.671s31.08x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.all with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.173s (-7.1% 🟢)2.006s (~)0.833s151.00x
🐘 PostgresExpress1.194s (-0.5%)2.008s (-0.7%)0.815s151.02x
🐘 PostgresNitro1.195s (~)2.007s (~)0.812s151.02x
💻 LocalNitro1.234s (+1.8%)2.005s (~)0.771s151.05x
💻 LocalNext.js (Turbopack)1.301s (+6.3% 🔺)2.006s (~)0.705s151.11x
🐘 PostgresNext.js (Turbopack)1.320s (+5.5% 🔺)2.039s (+1.6%)0.719s151.13x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express2.504s (-9.5% 🟢)4.094s (-13.3% 🟢)1.590s81.00x
▲ VercelNitro2.517s (-9.1% 🟢)3.950s (-9.0% 🟢)1.433s81.00x
▲ VercelNext.js (Turbopack)2.789s (+3.8%)4.662s (+10.5% 🔺)1.873s71.11x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.252s (-0.6%)2.007s (~)0.755s151.00x
🐘 PostgresExpress1.319s (-0.6%)2.076s (+3.0%)0.757s151.05x
💻 LocalExpress1.622s (-13.8% 🟢)2.006s (-9.7% 🟢)0.384s151.30x
🐘 PostgresNext.js (Turbopack)1.649s (+17.0% 🔺)2.181s (+8.6% 🔺)0.532s141.32x
💻 LocalNitro1.727s (+1.3%)2.006s (-3.2%)0.278s151.38x
💻 LocalNext.js (Turbopack)1.770s (+2.5%)2.073s (+3.3%)0.303s151.41x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express3.485s (-14.7% 🟢)5.780s (-6.3% 🟢)2.295s61.00x
▲ VercelNitro3.504s (-13.9% 🟢)5.276s (-15.0% 🟢)1.773s61.01x
▲ VercelNext.js (Turbopack)3.912s (-4.7%)5.887s (-4.1%)1.975s61.12x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.394s (-0.9%)2.007s (~)0.613s151.00x
🐘 PostgresExpress1.436s (+3.0%)2.008s (~)0.571s151.03x
🐘 PostgresNext.js (Turbopack)1.782s (+1.3%)2.314s (+0.8%)0.532s131.28x
💻 LocalExpress3.990s (-24.7% 🟢)4.440s (-26.2% 🟢)0.450s72.86x
💻 LocalNitro4.648s (-1.5%)5.178s (+3.3%)0.530s63.33x
💻 LocalNext.js (Turbopack)4.694s (+6.8% 🔺)5.179s (+3.4%)0.485s63.37x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Next.js (Turbopack)5.879s (~)8.089s (+4.0%)2.210s41.00x
▲ VercelNitro6.034s (-10.4% 🟢)7.827s (-10.1% 🟢)1.794s41.03x
▲ VercelExpress7.226s (+22.4% 🔺)9.576s (+21.3% 🔺)2.351s41.23x

🔍 Observability: Next.js (Turbopack) | Nitro | Express

Promise.race with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.185s (-1.5%)2.012s (~)0.827s151.00x
🐘 PostgresNitro1.186s (-1.2%)2.009s (~)0.824s151.00x
💻 LocalNext.js (Turbopack)1.352s (+3.6%)2.006s (~)0.654s151.14x
🐘 PostgresNext.js (Turbopack)1.398s (+10.4% 🔺)2.176s (+8.3% 🔺)0.778s141.18x
💻 LocalExpress1.486s (-10.3% 🟢)2.006s (-3.3%)0.520s151.25x
💻 LocalNitro1.554s (+0.7%)2.007s (~)0.452s151.31x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.431s (-9.0% 🟢)3.819s (-11.9% 🟢)1.388s81.00x
▲ VercelNext.js (Turbopack)2.726s (-37.7% 🟢)4.406s (-30.0% 🟢)1.680s71.12x
▲ VercelExpress2.760s (+7.5% 🔺)4.377s (+4.2%)1.616s71.14x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

Promise.race with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.254s (-1.6%)2.008s (~)0.754s151.00x
🐘 PostgresExpress1.270s (+2.2%)2.008s (~)0.738s151.01x
🐘 PostgresNext.js (Turbopack)1.469s (+5.2% 🔺)2.152s (+7.2% 🔺)0.683s141.17x
💻 LocalExpress1.793s (-15.6% 🟢)2.149s (-17.1% 🟢)0.355s141.43x
💻 LocalNext.js (Turbopack)2.067s (+2.3%)2.735s (+9.1% 🔺)0.668s111.65x
💻 LocalNitro2.130s (+21.2% 🔺)2.508s (+21.0% 🔺)0.379s121.70x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express3.577s (-2.7%)5.258s (-6.3% 🟢)1.681s61.00x
▲ VercelNitro3.830s (-6.5% 🟢)5.397s (-10.1% 🟢)1.567s61.07x
▲ VercelNext.js (Turbopack)3.947s (-12.7% 🟢)5.691s (-7.7% 🟢)1.744s61.10x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.392s (-4.8%)2.007s (~)0.615s151.00x
🐘 PostgresExpress1.410s (-6.0% 🟢)2.007s (-16.3% 🟢)0.598s151.01x
🐘 PostgresNext.js (Turbopack)1.951s (+17.8% 🔺)2.504s (+20.7% 🔺)0.552s131.40x
💻 LocalExpress4.581s (-21.9% 🟢)5.179s (-16.6% 🟢)0.598s63.29x
💻 LocalNext.js (Turbopack)5.452s (+5.6% 🔺)6.015s (~)0.562s53.92x
💻 LocalNitro5.717s (+20.5% 🔺)6.014s (+12.5% 🔺)0.297s54.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.513s (+11.8% 🔺)7.127s (+5.8% 🔺)1.614s51.00x
▲ VercelNext.js (Turbopack)5.755s (-0.6%)7.799s (+2.9%)2.044s41.04x
▲ VercelExpress7.013s (+38.2% 🔺)9.063s (+36.7% 🔺)2.050s41.27x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro0.566s (-7.1% 🟢)1.006s (~)0.441s601.00x
💻 LocalExpress0.583s (-11.1% 🟢)1.005s (-3.4%)0.421s601.03x
💻 LocalNitro0.587s (-27.0% 🟢)1.005s (-16.6% 🟢)0.418s601.04x
🐘 PostgresExpress0.610s (-8.6% 🟢)1.024s (-2.3%)0.414s591.08x
💻 LocalNext.js (Turbopack)0.857s (+23.1% 🔺)1.039s (+3.5%)0.182s581.52x
🐘 PostgresNext.js (Turbopack)0.941s (+15.9% 🔺)1.377s (+36.8% 🔺)0.436s451.66x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express5.939s (+8.0% 🔺)7.671s (+7.9% 🔺)1.733s81.00x
▲ VercelNitro6.056s (-18.8% 🟢)7.518s (-21.0% 🟢)1.462s81.02x
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Express | Nitro

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.394s (-1.6%)2.030s (+1.1%)0.636s451.00x
🐘 PostgresExpress1.435s (-6.6% 🟢)2.053s (-4.6%)0.618s441.03x
💻 LocalExpress1.477s (-7.2% 🟢)2.005s (-1.2%)0.528s451.06x
💻 LocalNitro1.489s (+1.7%)2.006s (~)0.517s451.07x
💻 LocalNext.js (Turbopack)2.089s (+20.8% 🔺)2.911s (+43.6% 🔺)0.823s311.50x
🐘 PostgresNext.js (Turbopack)2.145s (+10.4% 🔺)2.574s (+18.4% 🔺)0.429s361.54x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express14.723s (-10.1% 🟢)16.752s (-8.5% 🟢)2.029s61.00x
▲ VercelNitro14.762s (+11.7% 🔺)16.203s (+4.7%)1.441s61.00x
▲ VercelNext.js (Turbopack)15.199s (+2.9%)17.372s (+2.6%)2.173s61.03x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro2.774s (-4.8%)3.167s (-3.5%)0.393s381.00x
🐘 PostgresExpress2.779s (-4.6%)3.137s (-11.4% 🟢)0.359s391.00x
💻 LocalExpress3.137s (-8.3% 🟢)3.977s (-0.8%)0.840s311.13x
💻 LocalNitro3.348s (+4.4%)4.009s (~)0.661s301.21x
💻 LocalNext.js (Turbopack)4.238s (+13.7% 🔺)5.010s (+21.9% 🔺)0.773s241.53x
🐘 PostgresNext.js (Turbopack)4.304s (+11.5% 🔺)4.755s (+16.6% 🔺)0.451s261.55x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express30.799s (+6.8% 🔺)33.461s (+8.3% 🔺)2.661s41.00x
▲ VercelNitro31.020s (+4.2%)33.344s (+4.3%)2.324s41.01x
▲ VercelNext.js (Turbopack)31.973s (+18.5% 🔺)34.694s (+18.5% 🔺)2.721s41.04x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express0.221s (-12.2% 🟢)1.006s (~)0.785s601.00x
🐘 PostgresNitro0.225s (-4.5%)1.007s (~)0.782s601.02x
🐘 PostgresNext.js (Turbopack)0.289s (+2.5%)1.010s (~)0.721s601.31x
💻 LocalExpress0.414s (-11.0% 🟢)1.004s (~)0.590s601.87x
💻 LocalNitro0.418s (-1.6%)1.004s (~)0.587s601.89x
💻 LocalNext.js (Turbopack)0.588s (-3.7%)1.022s (-1.6%)0.434s592.66x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express2.424s (+9.6% 🔺)4.113s (~)1.689s151.00x
▲ VercelNitro2.586s (+10.3% 🔺)4.067s (-6.2% 🟢)1.480s151.07x
▲ VercelNext.js (Turbopack)2.760s (+25.5% 🔺)4.441s (+5.2% 🔺)1.681s141.14x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro0.345s (-6.9% 🟢)1.006s (~)0.661s901.00x
🐘 PostgresExpress0.364s (+7.4% 🔺)1.007s (~)0.643s901.05x
🐘 PostgresNext.js (Turbopack)0.612s (+26.9% 🔺)1.141s (+13.4% 🔺)0.528s791.77x
💻 LocalExpress2.041s (-6.8% 🟢)2.564s (-9.2% 🟢)0.522s365.91x
💻 LocalNitro2.142s (+3.8%)2.736s (+3.7%)0.594s336.20x
💻 LocalNext.js (Turbopack)2.281s (-6.9% 🟢)2.947s (-5.2% 🟢)0.665s316.61x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.706s (-87.0% 🟢)7.294s (-84.1% 🟢)1.588s131.00x
▲ VercelExpress5.789s (-86.6% 🟢)7.521s (-83.4% 🟢)1.732s121.01x
▲ VercelNext.js (Turbopack)6.444s (+2.8%)8.035s (-5.4% 🟢)1.592s121.13x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro0.683s (-3.4%)1.007s (~)0.324s1201.00x
🐘 PostgresExpress0.698s (+11.6% 🔺)1.007s (-4.6%)0.308s1201.02x
🐘 PostgresNext.js (Turbopack)1.251s (+27.7% 🔺)1.804s (+12.2% 🔺)0.553s681.83x
💻 LocalExpress8.852s (-14.2% 🟢)9.331s (-14.1% 🟢)0.479s1312.96x
💻 LocalNitro9.747s (+11.9% 🔺)10.277s (+10.1% 🔺)0.530s1214.27x
💻 LocalNext.js (Turbopack)10.651s (+3.3%)11.301s (~)0.650s1115.59x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express15.038s (-1.4%)17.353s (-0.8%)2.315s71.00x
▲ VercelNitro16.319s (-94.8% 🟢)18.256s (-94.2% 🟢)1.937s71.09x
▲ VercelNext.js (Turbopack)18.104s (-88.7% 🟢)20.071s (-87.6% 🟢)1.967s61.20x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Stream Benchmarks(includes TTFB metrics)
workflow with stream

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.151s (-1.5%)2.005s (~)0.010s (-25.0% 🟢)2.016s (~)0.866s101.00x
💻 LocalNitro1.159s (+0.7%)2.005s (~)0.010s (+4.0%)2.018s (~)0.859s101.01x
🐘 PostgresExpress1.172s (-1.8%)1.999s (~)0.001s (-96.8% 🟢)2.010s (-1.6%)0.838s101.02x
🐘 PostgresNitro1.180s (~)1.996s (~)0.001s (-14.3% 🟢)2.010s (~)0.831s101.03x
💻 LocalNext.js (Turbopack)1.201s (+2.8%)2.004s (~)0.010s (+3.0%)2.018s (~)0.817s101.04x
🐘 PostgresNext.js (Turbopack)1.368s (+10.8% 🔺)1.990s (-0.6%)0.055s (+3580.0% 🔺)2.082s (+3.5%)0.715s101.19x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.307s (+6.6% 🔺)3.590s (+5.1% 🔺)1.139s (+120.8% 🔺)5.133s (+14.9% 🔺)2.826s101.00x
▲ VercelNext.js (Turbopack)2.428s (+8.3% 🔺)3.703s (+4.3%)0.831s (-93.3% 🟢)5.003s (-69.7% 🟢)2.576s101.05x
▲ VercelExpress2.466s (+15.0% 🔺)3.846s (+12.8% 🔺)0.713s (+35.6% 🔺)5.057s (+13.7% 🔺)2.591s101.07x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

stream pipeline with 5 transform steps (1MB)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.548s (-5.4% 🟢)2.008s (~)0.012s (+5.7% 🔺)2.022s (~)0.474s301.00x
💻 LocalNitro1.573s (-9.7% 🟢)2.010s (~)0.013s (+38.7% 🔺)2.025s (-7.9% 🟢)0.451s301.02x
🐘 PostgresNitro1.617s (-2.8%)2.002s (~)0.005s (+29.1% 🔺)2.028s (~)0.411s301.04x
🐘 PostgresExpress1.626s (-6.4% 🟢)2.008s (-6.3% 🟢)0.005s (+64.3% 🔺)2.028s (-6.1% 🟢)0.402s301.05x
💻 LocalNext.js (Turbopack)1.715s (+4.6%)2.009s (~)0.011s (+12.9% 🔺)2.024s (~)0.308s301.11x
🐘 PostgresNext.js (Turbopack)2.571s (+45.8% 🔺)3.165s (+57.3% 🔺)0.004s (+4.4%)3.199s (+57.8% 🔺)0.628s191.66x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express6.232s (+8.2% 🔺)7.789s (+4.8%)0.300s (-15.3% 🟢)8.701s (+3.5%)2.470s71.00x
▲ VercelNitro6.288s (+9.4% 🔺)7.594s (~)0.222s (-34.4% 🟢)8.204s (-3.3%)1.915s81.01x
▲ VercelNext.js (Turbopack)7.670s (+20.4% 🔺)9.265s (+16.7% 🔺)0.184s (-49.0% 🟢)9.896s (+11.6% 🔺)2.226s81.23x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express0.721s (-26.2% 🟢)1.050s (-26.4% 🟢)0.000s (-75.4% 🟢)1.060s (-26.8% 🟢)0.339s571.00x
🐘 PostgresNitro0.733s (+1.5%)1.049s (+1.7%)0.000s (-66.1% 🟢)1.066s (+1.7%)0.332s571.02x
🐘 PostgresNext.js (Turbopack)1.323s (+58.9% 🔺)1.765s (+64.7% 🔺)0.000s (-100.0% 🟢)1.783s (+65.1% 🔺)0.460s341.84x
💻 LocalExpress1.347s (-9.2% 🟢)2.012s (~)0.000s (-40.0% 🟢)2.014s (~)0.668s301.87x
💻 LocalNitro1.419s (+4.9%)2.014s (~)0.000s (-60.0% 🟢)2.016s (~)0.596s301.97x
💻 LocalNext.js (Turbopack)1.484s (+2.5%)2.013s (~)0.000s (+12.5% 🔺)2.016s (~)0.532s302.06x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.169s (-12.0% 🟢)4.203s (-17.1% 🟢)0.000s (NaN%)4.575s (-18.7% 🟢)1.406s141.00x
▲ VercelNext.js (Turbopack)3.532s (+6.8% 🔺)4.818s (-1.6%)0.000s (NaN%)5.312s (-2.7%)1.780s121.11x
▲ VercelExpress3.592s (-11.5% 🟢)5.050s (-5.4% 🟢)0.000s (-100.0% 🟢)5.510s (-10.7% 🟢)1.917s111.13x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

fan-out fan-in 10 streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.505s (+6.7% 🔺)2.144s (+7.4% 🔺)0.000s (+Infinity% 🔺)2.187s (+8.7% 🔺)0.682s281.00x
🐘 PostgresExpress1.535s (-4.9%)2.254s (~)0.000s (NaN%)2.271s (~)0.736s271.02x
🐘 PostgresNext.js (Turbopack)2.514s (+45.5% 🔺)3.050s (+34.9% 🔺)0.000s (+Infinity% 🔺)3.065s (+35.1% 🔺)0.551s201.67x
💻 LocalNext.js (Turbopack)2.696s (-16.1% 🟢)3.340s (-14.3% 🟢)0.000s (-32.6% 🟢)3.343s (-14.3% 🟢)0.647s191.79x
💻 LocalExpress3.046s (-8.6% 🟢)3.836s (~)0.000s (-50.0% 🟢)3.839s (~)0.793s162.02x
💻 LocalNitro3.178s (+2.0%)4.028s (+3.4%)0.000s (+33.3% 🔺)4.031s (+3.3%)0.853s152.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.016s (-28.8% 🟢)6.393s (-25.4% 🟢)0.001s (+Infinity% 🔺)6.778s (-25.4% 🟢)1.762s91.00x
▲ VercelExpress5.111s (-19.1% 🟢)6.465s (-15.2% 🟢)0.000s (-70.4% 🟢)7.031s (-14.1% 🟢)1.920s91.02x
▲ VercelNext.js (Turbopack)5.804s (+12.3% 🔺)7.314s (+9.5% 🔺)0.000s (-100.0% 🟢)7.878s (+9.4% 🔺)2.074s81.16x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World🥇 Fastest FrameworkWins
💻 LocalExpress15/21
🐘 PostgresNitro13/21
▲ VercelExpress12/21
Fastest World by Framework

Winner determined by most benchmark wins

Framework🥇 Fastest WorldWins
Express🐘 Postgres12/21
Next.js (Turbopack)💻 Local12/21
Nitro🐘 Postgres14/21
Column Definitions
  • Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
  • TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
  • Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
  • Wall Time: Total testbench time (trigger workflow + poll for result)
  • Overhead: Testbench overhead (Wall Time - Workflow Time)
  • Samples: Number of benchmark iterations run
  • vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

  • 💻 Local: In-memory filesystem world (local development)
  • 🐘 Postgres: PostgreSQL database world (local development)
  • ▲ Vercel: Vercel production/preview deployment
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Redis + BullMQ: Community world (local development)
  • 🌐 Cloudflare: Community world (local development)
  • 🌐 MySQL: Community world (local development)
  • 🌐 Azure: Community world (local development)
  • 🌐 NATS JetStream: Community world (local development)
  • 🌐 Upstash: Community world (local development)

📋 View full workflow run

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🧪 E2E Test Results

All tests passed

Summary

PassedFailedSkippedTotal
✅ ▲ Vercel Production126602191485
✅ 💻 Local Development167102191890
✅ 📦 Local Production167102191890
✅ 🐘 Local Postgres167102191890
✅ 🪟 Windows13500135
✅ 📋 Other7690176945
Total7183010528235

Details by Category

✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro109026
✅ example109026
✅ express109026
✅ fastify109026
✅ hono109026
✅ nextjs-turbopack13302
✅ nextjs-webpack13302
✅ nitro109026
✅ nuxt109026
✅ sveltekit12807
✅ vite109026
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable110025
✅ express-stable110025
✅ fastify-stable110025
✅ hono-stable110025
✅ nextjs-turbopack-canary116019
✅ nextjs-turbopack-stable-lazy-discovery-disabled13500
✅ nextjs-turbopack-stable-lazy-discovery-enabled13500
✅ nextjs-webpack-canary116019
✅ nextjs-webpack-stable-lazy-discovery-disabled13500
✅ nextjs-webpack-stable-lazy-discovery-enabled13500
✅ nitro-stable110025
✅ nuxt-stable110025
✅ sveltekit-stable12906
✅ vite-stable110025
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable110025
✅ express-stable110025
✅ fastify-stable110025
✅ hono-stable110025
✅ nextjs-turbopack-canary116019
✅ nextjs-turbopack-stable-lazy-discovery-disabled13500
✅ nextjs-turbopack-stable-lazy-discovery-enabled13500
✅ nextjs-webpack-canary116019
✅ nextjs-webpack-stable-lazy-discovery-disabled13500
✅ nextjs-webpack-stable-lazy-discovery-enabled13500
✅ nitro-stable110025
✅ nuxt-stable110025
✅ sveltekit-stable12906
✅ vite-stable110025
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable110025
✅ express-stable110025
✅ fastify-stable110025
✅ hono-stable110025
✅ nextjs-turbopack-canary116019
✅ nextjs-turbopack-stable-lazy-discovery-disabled13500
✅ nextjs-turbopack-stable-lazy-discovery-enabled13500
✅ nextjs-webpack-canary116019
✅ nextjs-webpack-stable-lazy-discovery-disabled13500
✅ nextjs-webpack-stable-lazy-discovery-enabled13500
✅ nitro-stable110025
✅ nuxt-stable110025
✅ sveltekit-stable12906
✅ vite-stable110025
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack13500
✅ 📋 Other
AppPassedFailedSkipped
✅ e2e-local-dev-nest-stable110025
✅ e2e-local-dev-tanstack-start-110025
✅ e2e-local-postgres-nest-stable110025
✅ e2e-local-postgres-tanstack-start-110025
✅ e2e-local-prod-nest-stable110025
✅ e2e-local-prod-tanstack-start-110025
✅ e2e-vercel-prod-tanstack-start109026

📋 View full workflow run

@VaguelySerious
VaguelySerious merged commit 4e8a965 into mainJun 11, 2026
188 of 191 checks passed
@VaguelySerious
VaguelySerious deleted the peter/e2e-failure-diagnostics branch June 11, 2026 10:36
github-actionsBot added a commit that referenced this pull request Jun 11, 2026
…ses (#2355)
Signed-off-by: Peter Wielander <mittgfu@gmail.com>
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Backport PR opened against stable: #2357. (backport job run)

pranaygp added a commit that referenced this pull request Jun 11, 2026
…hook-ready
* origin-https/main: (119 commits)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
Prevent local tests from hanging (#2338)
feat(core): add optional namespace for queue topic prefix (#2305)
[web-shared] Show precise durations in the new trace viewer (#2335)
Validate unique workflow step IDs at build time (#2018)
Move run attributes into their own detail card (#2327)
[core] Forward-port stream reconnect to getReadable level (#2318)
[docs] Add "Step executed multiple times" error page (#2310)
Fix flickering on the detail panel when navigating the trace viewer (#2325)
Version Packages (beta) (#2254)
Patch vulnerable package dependencies (#2301)
Deprecate DurableAgent and update it with WorkflowAgent in v5 docs (#2285)
[codex] Fix partial world-local exclusive writes (#2296)
...
# Conflicts:
#	packages/core/src/runtime.ts
#	packages/core/src/runtime/suspension-handler.ts
pranaygp added a commit that referenced this pull request Jun 11, 2026
…t-race-eager-wait
* origin/main:
docs(observability): remove MVP implementation detail bullet (#2367)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
pranaygp added a commit that referenced this pull request Jun 11, 2026
…docs-run-idempotency
* origin-https/main: (115 commits)
[core] V2: unify wait+step queue dispatch in suspension processing (#1925)
fix(world-local,world-postgres): make duplicate hook_created idempotent (#2295)
docs(observability): remove MVP implementation detail bullet (#2367)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
Prevent local tests from hanging (#2338)
feat(core): add optional namespace for queue topic prefix (#2305)
[web-shared] Show precise durations in the new trace viewer (#2335)
Validate unique workflow step IDs at build time (#2018)
Move run attributes into their own detail card (#2327)
[core] Forward-port stream reconnect to getReadable level (#2318)
[docs] Add "Step executed multiple times" error page (#2310)
Fix flickering on the detail panel when navigating the trace viewer (#2325)
Version Packages (beta) (#2254)
...
# Conflicts:
#	docs/content/docs/v4/cookbook/advanced/child-workflows.mdx
#	docs/content/docs/v5/cookbook/advanced/child-workflows.mdx
#	docs/content/docs/v5/cookbook/agent-patterns/durable-agent.mdx
pranaygp added a commit that referenced this pull request Jun 11, 2026
* origin/main:
[core] V2: unify wait+step queue dispatch in suspension processing (#1925)
fix(world-local,world-postgres): make duplicate hook_created idempotent (#2295)
docs(observability): remove MVP implementation detail bullet (#2367)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
Prevent local tests from hanging (#2338)
feat(core): add optional namespace for queue topic prefix (#2305)
[web-shared] Show precise durations in the new trace viewer (#2335)
Validate unique workflow step IDs at build time (#2018)
Move run attributes into their own detail card (#2327)
[core] Forward-port stream reconnect to getReadable level (#2318)
[docs] Add "Step executed multiple times" error page (#2310)
Fix flickering on the detail panel when navigating the trace viewer (#2325)
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@VaguelySerious
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[core] Fix e2e failure reporting under vitest 4 and preserve fetch error causes - #2355

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VaguelySerious merged 1 commit into
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peter/e2e-failure-diagnostics
Jun 11, 2026
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[core] Fix e2e failure reporting under vitest 4 and preserve fetch error causes#2355
VaguelySerious merged 1 commit into
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peter/e2e-failure-diagnostics

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Summary

Three fixes that stop e2e failure information from being destroyed before anyone can look at it. This is groundwork for debugging the chronic E2E Vercel Prod flakes — today most of those failures surface as Error: STACK_TRACE_ERROR or a bare TypeError: fetch failed, neither of which is actionable.

1. github-reporter.ts: port to the vitest 4 reporter API

The reporter relied on the onFinished hook, which vitest 4 no longer calls. Since the vitest upgrade it has been silently dead: the e2e-failures-*.json sidecar was never written (it's listed in the CI artifact upload paths but absent from every recent artifact), and the file-linked ::error annotations were never emitted. Ported to onTestRunEnd / TestModule traversal.

2. aggregate-e2e-results.js: recover real failure messages for timeouts

vitest's JSON reporter serializes only error stacks. For test timeouts, the stack is the task-collection stack, whose first line is Error: STACK_TRACE_ERROR — the actual Test timed out in 60000ms message is dropped entirely (it appears nowhere in the JSON output). The aggregation script now falls back to the real error message from the failures sidecar (carried via error.message by the fixed reporter) when the vitest message is useless.

3. utils.ts: preserve undici fetch error causes

Network-level failures throw TypeError: fetch failed with the actual cause (ECONNRESET, ETIMEDOUT, DNS, ...) on error.cause, and no indication of which URL failed. Reporters don't serialize either. The e2e suite now wraps globalThis.fetch (test process only) and enriches the error in place:

before: TypeError: fetch failed
after: TypeError: fetch failed (POST https://workbench-…vercel.dev/api/trigger — cause: ECONNRESET)

Validation

Ran a scratch test file with all three failure modes (timeout, network failure, assertion) through the exact CI reporter invocation:

  • failures sidecar is written again with real messages (Test timed out in 1500ms.)
  • annotations carry the enriched messages
  • the step-summary script renders the real message instead of STACK_TRACE_ERROR

No published package code is touched (e2e harness + CI scripts only), hence the empty changeset.

🤖 Generated with Claude Code

The custom github-reporter relied on the onFinished reporter hook, which
vitest 4 no longer calls — so the e2e-failures sidecar was never written
and file-linked annotations were never emitted. Port it to onTestRunEnd.
Test timeouts surfaced as 'Error: STACK_TRACE_ERROR' in summaries because
vitest's JSON reporter serializes only error stacks, and for timeouts the
stack is the task-collection stack. The aggregation script now prefers the
real error message from the failures sidecar.
Network failures surfaced as bare 'TypeError: fetch failed'. The e2e suite
now enriches these in place with the request method, URL, and undici cause
code (ECONNRESET, ETIMEDOUT, ...).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
@VaguelySerious
VaguelySerious requested a review from a team as a code ownerJune 11, 2026 10:10
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🦋 Changeset detected

Latest commit: 9ca1ae3

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 0 packages

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📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.043s (~)1.006s (~)0.963s101.00x
💻 LocalNitro0.044s (+2.8%)1.006s (~)0.962s101.02x
💻 LocalNext.js (Turbopack)0.059s (+8.0% 🔺)1.006s (~)0.947s101.38x
🐘 PostgresExpress0.065s (-1.5%)1.014s (~)0.949s101.52x
🐘 PostgresNitro0.068s (+8.2% 🔺)1.013s (~)0.945s101.59x
🐘 PostgresNext.js (Turbopack)0.089s (+27.0% 🔺)1.030s (+1.7%)0.941s102.07x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro0.300s (+14.9% 🔺)2.088s (-14.3% 🟢)1.788s101.00x
▲ VercelNext.js (Turbopack)0.386s (+17.3% 🔺)2.406s (+2.8%)2.019s101.29x
▲ VercelExpress0.391s (+43.4% 🔺)1.911s (-29.6% 🟢)1.521s101.30x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

workflow with 1 step

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.091s (-0.5%)2.006s (~)0.916s101.00x
💻 LocalExpress1.093s (-0.7%)2.006s (~)0.913s101.00x
🐘 PostgresExpress1.112s (+1.8%)2.012s (~)0.900s101.02x
🐘 PostgresNitro1.116s (~)2.010s (~)0.894s101.02x
💻 LocalNext.js (Turbopack)1.130s (+1.9%)2.007s (~)0.877s101.04x
🐘 PostgresNext.js (Turbopack)1.132s (-0.9%)2.008s (~)0.876s101.04x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express1.588s (~)3.821s (+7.0% 🔺)2.232s101.00x
▲ VercelNitro1.650s (+5.4% 🔺)3.513s (~)1.863s101.04x
▲ VercelNext.js (Turbopack)1.808s (+8.6% 🔺)3.828s (-6.1% 🟢)2.019s101.14x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro10.487s (-0.6%)11.022s (~)0.535s31.00x
💻 LocalExpress10.521s (~)11.021s (~)0.500s31.00x
🐘 PostgresExpress10.586s (-1.2%)11.025s (-2.9%)0.439s31.01x
🐘 PostgresNitro10.594s (~)11.018s (~)0.424s31.01x
💻 LocalNext.js (Turbopack)10.767s (+1.5%)11.022s (~)0.255s31.03x
🐘 PostgresNext.js (Turbopack)10.814s (~)11.347s (+3.0%)0.533s31.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express13.367s (+1.6%)15.148s (-2.0%)1.780s21.00x
▲ VercelNitro13.812s (+3.7%)15.266s (-2.1%)1.454s21.03x
▲ VercelNext.js (Turbopack)14.204s (+5.2% 🔺)16.075s (~)1.871s21.06x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro13.716s (~)14.027s (~)0.311s51.00x
💻 LocalExpress13.720s (-1.3%)14.026s (-1.4%)0.306s51.00x
🐘 PostgresNitro13.894s (~)14.019s (~)0.125s51.01x
🐘 PostgresExpress13.979s (+1.0%)14.222s (~)0.244s51.02x
💻 LocalNext.js (Turbopack)14.314s (+2.0%)15.029s (+2.7%)0.715s41.04x
🐘 PostgresNext.js (Turbopack)14.649s (~)15.020s (~)0.370s41.07x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express21.128s (-17.1% 🟢)25.412s (-6.7% 🟢)4.284s31.00x
▲ VercelNitro21.318s (-16.5% 🟢)22.945s (-16.9% 🟢)1.627s31.01x
▲ VercelNext.js (Turbopack)21.950s (-14.0% 🟢)23.847s (-12.3% 🟢)1.897s31.04x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro12.403s (~)13.025s (~)0.622s71.00x
💻 LocalExpress12.446s (-1.2%)13.024s (~)0.577s71.00x
🐘 PostgresNitro12.541s (-1.6%)13.021s (~)0.480s71.01x
🐘 PostgresExpress12.686s (~)13.024s (-2.2%)0.337s71.02x
💻 LocalNext.js (Turbopack)13.524s (+4.4%)14.029s (+5.4% 🔺)0.505s71.09x
🐘 PostgresNext.js (Turbopack)14.272s (+3.7%)15.036s (+7.3% 🔺)0.764s61.15x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro29.237s (+0.6%)31.600s (+0.7%)2.363s31.00x
▲ VercelExpress29.351s (-8.5% 🟢)31.658s (-7.5% 🟢)2.306s31.00x
▲ VercelNext.js (Turbopack)31.628s (+6.8% 🔺)34.299s (+7.7% 🔺)2.671s31.08x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.all with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.173s (-7.1% 🟢)2.006s (~)0.833s151.00x
🐘 PostgresExpress1.194s (-0.5%)2.008s (-0.7%)0.815s151.02x
🐘 PostgresNitro1.195s (~)2.007s (~)0.812s151.02x
💻 LocalNitro1.234s (+1.8%)2.005s (~)0.771s151.05x
💻 LocalNext.js (Turbopack)1.301s (+6.3% 🔺)2.006s (~)0.705s151.11x
🐘 PostgresNext.js (Turbopack)1.320s (+5.5% 🔺)2.039s (+1.6%)0.719s151.13x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express2.504s (-9.5% 🟢)4.094s (-13.3% 🟢)1.590s81.00x
▲ VercelNitro2.517s (-9.1% 🟢)3.950s (-9.0% 🟢)1.433s81.00x
▲ VercelNext.js (Turbopack)2.789s (+3.8%)4.662s (+10.5% 🔺)1.873s71.11x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.252s (-0.6%)2.007s (~)0.755s151.00x
🐘 PostgresExpress1.319s (-0.6%)2.076s (+3.0%)0.757s151.05x
💻 LocalExpress1.622s (-13.8% 🟢)2.006s (-9.7% 🟢)0.384s151.30x
🐘 PostgresNext.js (Turbopack)1.649s (+17.0% 🔺)2.181s (+8.6% 🔺)0.532s141.32x
💻 LocalNitro1.727s (+1.3%)2.006s (-3.2%)0.278s151.38x
💻 LocalNext.js (Turbopack)1.770s (+2.5%)2.073s (+3.3%)0.303s151.41x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express3.485s (-14.7% 🟢)5.780s (-6.3% 🟢)2.295s61.00x
▲ VercelNitro3.504s (-13.9% 🟢)5.276s (-15.0% 🟢)1.773s61.01x
▲ VercelNext.js (Turbopack)3.912s (-4.7%)5.887s (-4.1%)1.975s61.12x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.394s (-0.9%)2.007s (~)0.613s151.00x
🐘 PostgresExpress1.436s (+3.0%)2.008s (~)0.571s151.03x
🐘 PostgresNext.js (Turbopack)1.782s (+1.3%)2.314s (+0.8%)0.532s131.28x
💻 LocalExpress3.990s (-24.7% 🟢)4.440s (-26.2% 🟢)0.450s72.86x
💻 LocalNitro4.648s (-1.5%)5.178s (+3.3%)0.530s63.33x
💻 LocalNext.js (Turbopack)4.694s (+6.8% 🔺)5.179s (+3.4%)0.485s63.37x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Next.js (Turbopack)5.879s (~)8.089s (+4.0%)2.210s41.00x
▲ VercelNitro6.034s (-10.4% 🟢)7.827s (-10.1% 🟢)1.794s41.03x
▲ VercelExpress7.226s (+22.4% 🔺)9.576s (+21.3% 🔺)2.351s41.23x

🔍 Observability: Next.js (Turbopack) | Nitro | Express

Promise.race with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.185s (-1.5%)2.012s (~)0.827s151.00x
🐘 PostgresNitro1.186s (-1.2%)2.009s (~)0.824s151.00x
💻 LocalNext.js (Turbopack)1.352s (+3.6%)2.006s (~)0.654s151.14x
🐘 PostgresNext.js (Turbopack)1.398s (+10.4% 🔺)2.176s (+8.3% 🔺)0.778s141.18x
💻 LocalExpress1.486s (-10.3% 🟢)2.006s (-3.3%)0.520s151.25x
💻 LocalNitro1.554s (+0.7%)2.007s (~)0.452s151.31x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.431s (-9.0% 🟢)3.819s (-11.9% 🟢)1.388s81.00x
▲ VercelNext.js (Turbopack)2.726s (-37.7% 🟢)4.406s (-30.0% 🟢)1.680s71.12x
▲ VercelExpress2.760s (+7.5% 🔺)4.377s (+4.2%)1.616s71.14x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

Promise.race with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.254s (-1.6%)2.008s (~)0.754s151.00x
🐘 PostgresExpress1.270s (+2.2%)2.008s (~)0.738s151.01x
🐘 PostgresNext.js (Turbopack)1.469s (+5.2% 🔺)2.152s (+7.2% 🔺)0.683s141.17x
💻 LocalExpress1.793s (-15.6% 🟢)2.149s (-17.1% 🟢)0.355s141.43x
💻 LocalNext.js (Turbopack)2.067s (+2.3%)2.735s (+9.1% 🔺)0.668s111.65x
💻 LocalNitro2.130s (+21.2% 🔺)2.508s (+21.0% 🔺)0.379s121.70x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express3.577s (-2.7%)5.258s (-6.3% 🟢)1.681s61.00x
▲ VercelNitro3.830s (-6.5% 🟢)5.397s (-10.1% 🟢)1.567s61.07x
▲ VercelNext.js (Turbopack)3.947s (-12.7% 🟢)5.691s (-7.7% 🟢)1.744s61.10x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.392s (-4.8%)2.007s (~)0.615s151.00x
🐘 PostgresExpress1.410s (-6.0% 🟢)2.007s (-16.3% 🟢)0.598s151.01x
🐘 PostgresNext.js (Turbopack)1.951s (+17.8% 🔺)2.504s (+20.7% 🔺)0.552s131.40x
💻 LocalExpress4.581s (-21.9% 🟢)5.179s (-16.6% 🟢)0.598s63.29x
💻 LocalNext.js (Turbopack)5.452s (+5.6% 🔺)6.015s (~)0.562s53.92x
💻 LocalNitro5.717s (+20.5% 🔺)6.014s (+12.5% 🔺)0.297s54.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.513s (+11.8% 🔺)7.127s (+5.8% 🔺)1.614s51.00x
▲ VercelNext.js (Turbopack)5.755s (-0.6%)7.799s (+2.9%)2.044s41.04x
▲ VercelExpress7.013s (+38.2% 🔺)9.063s (+36.7% 🔺)2.050s41.27x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro0.566s (-7.1% 🟢)1.006s (~)0.441s601.00x
💻 LocalExpress0.583s (-11.1% 🟢)1.005s (-3.4%)0.421s601.03x
💻 LocalNitro0.587s (-27.0% 🟢)1.005s (-16.6% 🟢)0.418s601.04x
🐘 PostgresExpress0.610s (-8.6% 🟢)1.024s (-2.3%)0.414s591.08x
💻 LocalNext.js (Turbopack)0.857s (+23.1% 🔺)1.039s (+3.5%)0.182s581.52x
🐘 PostgresNext.js (Turbopack)0.941s (+15.9% 🔺)1.377s (+36.8% 🔺)0.436s451.66x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express5.939s (+8.0% 🔺)7.671s (+7.9% 🔺)1.733s81.00x
▲ VercelNitro6.056s (-18.8% 🟢)7.518s (-21.0% 🟢)1.462s81.02x
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Express | Nitro

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.394s (-1.6%)2.030s (+1.1%)0.636s451.00x
🐘 PostgresExpress1.435s (-6.6% 🟢)2.053s (-4.6%)0.618s441.03x
💻 LocalExpress1.477s (-7.2% 🟢)2.005s (-1.2%)0.528s451.06x
💻 LocalNitro1.489s (+1.7%)2.006s (~)0.517s451.07x
💻 LocalNext.js (Turbopack)2.089s (+20.8% 🔺)2.911s (+43.6% 🔺)0.823s311.50x
🐘 PostgresNext.js (Turbopack)2.145s (+10.4% 🔺)2.574s (+18.4% 🔺)0.429s361.54x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express14.723s (-10.1% 🟢)16.752s (-8.5% 🟢)2.029s61.00x
▲ VercelNitro14.762s (+11.7% 🔺)16.203s (+4.7%)1.441s61.00x
▲ VercelNext.js (Turbopack)15.199s (+2.9%)17.372s (+2.6%)2.173s61.03x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro2.774s (-4.8%)3.167s (-3.5%)0.393s381.00x
🐘 PostgresExpress2.779s (-4.6%)3.137s (-11.4% 🟢)0.359s391.00x
💻 LocalExpress3.137s (-8.3% 🟢)3.977s (-0.8%)0.840s311.13x
💻 LocalNitro3.348s (+4.4%)4.009s (~)0.661s301.21x
💻 LocalNext.js (Turbopack)4.238s (+13.7% 🔺)5.010s (+21.9% 🔺)0.773s241.53x
🐘 PostgresNext.js (Turbopack)4.304s (+11.5% 🔺)4.755s (+16.6% 🔺)0.451s261.55x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express30.799s (+6.8% 🔺)33.461s (+8.3% 🔺)2.661s41.00x
▲ VercelNitro31.020s (+4.2%)33.344s (+4.3%)2.324s41.01x
▲ VercelNext.js (Turbopack)31.973s (+18.5% 🔺)34.694s (+18.5% 🔺)2.721s41.04x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express0.221s (-12.2% 🟢)1.006s (~)0.785s601.00x
🐘 PostgresNitro0.225s (-4.5%)1.007s (~)0.782s601.02x
🐘 PostgresNext.js (Turbopack)0.289s (+2.5%)1.010s (~)0.721s601.31x
💻 LocalExpress0.414s (-11.0% 🟢)1.004s (~)0.590s601.87x
💻 LocalNitro0.418s (-1.6%)1.004s (~)0.587s601.89x
💻 LocalNext.js (Turbopack)0.588s (-3.7%)1.022s (-1.6%)0.434s592.66x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express2.424s (+9.6% 🔺)4.113s (~)1.689s151.00x
▲ VercelNitro2.586s (+10.3% 🔺)4.067s (-6.2% 🟢)1.480s151.07x
▲ VercelNext.js (Turbopack)2.760s (+25.5% 🔺)4.441s (+5.2% 🔺)1.681s141.14x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro0.345s (-6.9% 🟢)1.006s (~)0.661s901.00x
🐘 PostgresExpress0.364s (+7.4% 🔺)1.007s (~)0.643s901.05x
🐘 PostgresNext.js (Turbopack)0.612s (+26.9% 🔺)1.141s (+13.4% 🔺)0.528s791.77x
💻 LocalExpress2.041s (-6.8% 🟢)2.564s (-9.2% 🟢)0.522s365.91x
💻 LocalNitro2.142s (+3.8%)2.736s (+3.7%)0.594s336.20x
💻 LocalNext.js (Turbopack)2.281s (-6.9% 🟢)2.947s (-5.2% 🟢)0.665s316.61x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.706s (-87.0% 🟢)7.294s (-84.1% 🟢)1.588s131.00x
▲ VercelExpress5.789s (-86.6% 🟢)7.521s (-83.4% 🟢)1.732s121.01x
▲ VercelNext.js (Turbopack)6.444s (+2.8%)8.035s (-5.4% 🟢)1.592s121.13x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro0.683s (-3.4%)1.007s (~)0.324s1201.00x
🐘 PostgresExpress0.698s (+11.6% 🔺)1.007s (-4.6%)0.308s1201.02x
🐘 PostgresNext.js (Turbopack)1.251s (+27.7% 🔺)1.804s (+12.2% 🔺)0.553s681.83x
💻 LocalExpress8.852s (-14.2% 🟢)9.331s (-14.1% 🟢)0.479s1312.96x
💻 LocalNitro9.747s (+11.9% 🔺)10.277s (+10.1% 🔺)0.530s1214.27x
💻 LocalNext.js (Turbopack)10.651s (+3.3%)11.301s (~)0.650s1115.59x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express15.038s (-1.4%)17.353s (-0.8%)2.315s71.00x
▲ VercelNitro16.319s (-94.8% 🟢)18.256s (-94.2% 🟢)1.937s71.09x
▲ VercelNext.js (Turbopack)18.104s (-88.7% 🟢)20.071s (-87.6% 🟢)1.967s61.20x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Stream Benchmarks(includes TTFB metrics)
workflow with stream

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.151s (-1.5%)2.005s (~)0.010s (-25.0% 🟢)2.016s (~)0.866s101.00x
💻 LocalNitro1.159s (+0.7%)2.005s (~)0.010s (+4.0%)2.018s (~)0.859s101.01x
🐘 PostgresExpress1.172s (-1.8%)1.999s (~)0.001s (-96.8% 🟢)2.010s (-1.6%)0.838s101.02x
🐘 PostgresNitro1.180s (~)1.996s (~)0.001s (-14.3% 🟢)2.010s (~)0.831s101.03x
💻 LocalNext.js (Turbopack)1.201s (+2.8%)2.004s (~)0.010s (+3.0%)2.018s (~)0.817s101.04x
🐘 PostgresNext.js (Turbopack)1.368s (+10.8% 🔺)1.990s (-0.6%)0.055s (+3580.0% 🔺)2.082s (+3.5%)0.715s101.19x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.307s (+6.6% 🔺)3.590s (+5.1% 🔺)1.139s (+120.8% 🔺)5.133s (+14.9% 🔺)2.826s101.00x
▲ VercelNext.js (Turbopack)2.428s (+8.3% 🔺)3.703s (+4.3%)0.831s (-93.3% 🟢)5.003s (-69.7% 🟢)2.576s101.05x
▲ VercelExpress2.466s (+15.0% 🔺)3.846s (+12.8% 🔺)0.713s (+35.6% 🔺)5.057s (+13.7% 🔺)2.591s101.07x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

stream pipeline with 5 transform steps (1MB)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.548s (-5.4% 🟢)2.008s (~)0.012s (+5.7% 🔺)2.022s (~)0.474s301.00x
💻 LocalNitro1.573s (-9.7% 🟢)2.010s (~)0.013s (+38.7% 🔺)2.025s (-7.9% 🟢)0.451s301.02x
🐘 PostgresNitro1.617s (-2.8%)2.002s (~)0.005s (+29.1% 🔺)2.028s (~)0.411s301.04x
🐘 PostgresExpress1.626s (-6.4% 🟢)2.008s (-6.3% 🟢)0.005s (+64.3% 🔺)2.028s (-6.1% 🟢)0.402s301.05x
💻 LocalNext.js (Turbopack)1.715s (+4.6%)2.009s (~)0.011s (+12.9% 🔺)2.024s (~)0.308s301.11x
🐘 PostgresNext.js (Turbopack)2.571s (+45.8% 🔺)3.165s (+57.3% 🔺)0.004s (+4.4%)3.199s (+57.8% 🔺)0.628s191.66x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express6.232s (+8.2% 🔺)7.789s (+4.8%)0.300s (-15.3% 🟢)8.701s (+3.5%)2.470s71.00x
▲ VercelNitro6.288s (+9.4% 🔺)7.594s (~)0.222s (-34.4% 🟢)8.204s (-3.3%)1.915s81.01x
▲ VercelNext.js (Turbopack)7.670s (+20.4% 🔺)9.265s (+16.7% 🔺)0.184s (-49.0% 🟢)9.896s (+11.6% 🔺)2.226s81.23x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express0.721s (-26.2% 🟢)1.050s (-26.4% 🟢)0.000s (-75.4% 🟢)1.060s (-26.8% 🟢)0.339s571.00x
🐘 PostgresNitro0.733s (+1.5%)1.049s (+1.7%)0.000s (-66.1% 🟢)1.066s (+1.7%)0.332s571.02x
🐘 PostgresNext.js (Turbopack)1.323s (+58.9% 🔺)1.765s (+64.7% 🔺)0.000s (-100.0% 🟢)1.783s (+65.1% 🔺)0.460s341.84x
💻 LocalExpress1.347s (-9.2% 🟢)2.012s (~)0.000s (-40.0% 🟢)2.014s (~)0.668s301.87x
💻 LocalNitro1.419s (+4.9%)2.014s (~)0.000s (-60.0% 🟢)2.016s (~)0.596s301.97x
💻 LocalNext.js (Turbopack)1.484s (+2.5%)2.013s (~)0.000s (+12.5% 🔺)2.016s (~)0.532s302.06x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.169s (-12.0% 🟢)4.203s (-17.1% 🟢)0.000s (NaN%)4.575s (-18.7% 🟢)1.406s141.00x
▲ VercelNext.js (Turbopack)3.532s (+6.8% 🔺)4.818s (-1.6%)0.000s (NaN%)5.312s (-2.7%)1.780s121.11x
▲ VercelExpress3.592s (-11.5% 🟢)5.050s (-5.4% 🟢)0.000s (-100.0% 🟢)5.510s (-10.7% 🟢)1.917s111.13x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

fan-out fan-in 10 streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.505s (+6.7% 🔺)2.144s (+7.4% 🔺)0.000s (+Infinity% 🔺)2.187s (+8.7% 🔺)0.682s281.00x
🐘 PostgresExpress1.535s (-4.9%)2.254s (~)0.000s (NaN%)2.271s (~)0.736s271.02x
🐘 PostgresNext.js (Turbopack)2.514s (+45.5% 🔺)3.050s (+34.9% 🔺)0.000s (+Infinity% 🔺)3.065s (+35.1% 🔺)0.551s201.67x
💻 LocalNext.js (Turbopack)2.696s (-16.1% 🟢)3.340s (-14.3% 🟢)0.000s (-32.6% 🟢)3.343s (-14.3% 🟢)0.647s191.79x
💻 LocalExpress3.046s (-8.6% 🟢)3.836s (~)0.000s (-50.0% 🟢)3.839s (~)0.793s162.02x
💻 LocalNitro3.178s (+2.0%)4.028s (+3.4%)0.000s (+33.3% 🔺)4.031s (+3.3%)0.853s152.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.016s (-28.8% 🟢)6.393s (-25.4% 🟢)0.001s (+Infinity% 🔺)6.778s (-25.4% 🟢)1.762s91.00x
▲ VercelExpress5.111s (-19.1% 🟢)6.465s (-15.2% 🟢)0.000s (-70.4% 🟢)7.031s (-14.1% 🟢)1.920s91.02x
▲ VercelNext.js (Turbopack)5.804s (+12.3% 🔺)7.314s (+9.5% 🔺)0.000s (-100.0% 🟢)7.878s (+9.4% 🔺)2.074s81.16x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World🥇 Fastest FrameworkWins
💻 LocalExpress15/21
🐘 PostgresNitro13/21
▲ VercelExpress12/21
Fastest World by Framework

Winner determined by most benchmark wins

Framework🥇 Fastest WorldWins
Express🐘 Postgres12/21
Next.js (Turbopack)💻 Local12/21
Nitro🐘 Postgres14/21
Column Definitions
  • Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
  • TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
  • Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
  • Wall Time: Total testbench time (trigger workflow + poll for result)
  • Overhead: Testbench overhead (Wall Time - Workflow Time)
  • Samples: Number of benchmark iterations run
  • vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

  • 💻 Local: In-memory filesystem world (local development)
  • 🐘 Postgres: PostgreSQL database world (local development)
  • ▲ Vercel: Vercel production/preview deployment
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Redis + BullMQ: Community world (local development)
  • 🌐 Cloudflare: Community world (local development)
  • 🌐 MySQL: Community world (local development)
  • 🌐 Azure: Community world (local development)
  • 🌐 NATS JetStream: Community world (local development)
  • 🌐 Upstash: Community world (local development)

📋 View full workflow run

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🧪 E2E Test Results

All tests passed

Summary

PassedFailedSkippedTotal
✅ ▲ Vercel Production126602191485
✅ 💻 Local Development167102191890
✅ 📦 Local Production167102191890
✅ 🐘 Local Postgres167102191890
✅ 🪟 Windows13500135
✅ 📋 Other7690176945
Total7183010528235

Details by Category

✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro109026
✅ example109026
✅ express109026
✅ fastify109026
✅ hono109026
✅ nextjs-turbopack13302
✅ nextjs-webpack13302
✅ nitro109026
✅ nuxt109026
✅ sveltekit12807
✅ vite109026
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable110025
✅ express-stable110025
✅ fastify-stable110025
✅ hono-stable110025
✅ nextjs-turbopack-canary116019
✅ nextjs-turbopack-stable-lazy-discovery-disabled13500
✅ nextjs-turbopack-stable-lazy-discovery-enabled13500
✅ nextjs-webpack-canary116019
✅ nextjs-webpack-stable-lazy-discovery-disabled13500
✅ nextjs-webpack-stable-lazy-discovery-enabled13500
✅ nitro-stable110025
✅ nuxt-stable110025
✅ sveltekit-stable12906
✅ vite-stable110025
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable110025
✅ express-stable110025
✅ fastify-stable110025
✅ hono-stable110025
✅ nextjs-turbopack-canary116019
✅ nextjs-turbopack-stable-lazy-discovery-disabled13500
✅ nextjs-turbopack-stable-lazy-discovery-enabled13500
✅ nextjs-webpack-canary116019
✅ nextjs-webpack-stable-lazy-discovery-disabled13500
✅ nextjs-webpack-stable-lazy-discovery-enabled13500
✅ nitro-stable110025
✅ nuxt-stable110025
✅ sveltekit-stable12906
✅ vite-stable110025
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable110025
✅ express-stable110025
✅ fastify-stable110025
✅ hono-stable110025
✅ nextjs-turbopack-canary116019
✅ nextjs-turbopack-stable-lazy-discovery-disabled13500
✅ nextjs-turbopack-stable-lazy-discovery-enabled13500
✅ nextjs-webpack-canary116019
✅ nextjs-webpack-stable-lazy-discovery-disabled13500
✅ nextjs-webpack-stable-lazy-discovery-enabled13500
✅ nitro-stable110025
✅ nuxt-stable110025
✅ sveltekit-stable12906
✅ vite-stable110025
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack13500
✅ 📋 Other
AppPassedFailedSkipped
✅ e2e-local-dev-nest-stable110025
✅ e2e-local-dev-tanstack-start-110025
✅ e2e-local-postgres-nest-stable110025
✅ e2e-local-postgres-tanstack-start-110025
✅ e2e-local-prod-nest-stable110025
✅ e2e-local-prod-tanstack-start-110025
✅ e2e-vercel-prod-tanstack-start109026

📋 View full workflow run

@VaguelySerious
VaguelySerious merged commit 4e8a965 into mainJun 11, 2026
188 of 191 checks passed
@VaguelySerious
VaguelySerious deleted the peter/e2e-failure-diagnostics branch June 11, 2026 10:36
github-actionsBot added a commit that referenced this pull request Jun 11, 2026
…ses (#2355)
Signed-off-by: Peter Wielander <mittgfu@gmail.com>
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Backport PR opened against stable: #2357. (backport job run)

pranaygp added a commit that referenced this pull request Jun 11, 2026
…hook-ready
* origin-https/main: (119 commits)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
Prevent local tests from hanging (#2338)
feat(core): add optional namespace for queue topic prefix (#2305)
[web-shared] Show precise durations in the new trace viewer (#2335)
Validate unique workflow step IDs at build time (#2018)
Move run attributes into their own detail card (#2327)
[core] Forward-port stream reconnect to getReadable level (#2318)
[docs] Add "Step executed multiple times" error page (#2310)
Fix flickering on the detail panel when navigating the trace viewer (#2325)
Version Packages (beta) (#2254)
Patch vulnerable package dependencies (#2301)
Deprecate DurableAgent and update it with WorkflowAgent in v5 docs (#2285)
[codex] Fix partial world-local exclusive writes (#2296)
...
# Conflicts:
#	packages/core/src/runtime.ts
#	packages/core/src/runtime/suspension-handler.ts
pranaygp added a commit that referenced this pull request Jun 11, 2026
…t-race-eager-wait
* origin/main:
docs(observability): remove MVP implementation detail bullet (#2367)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
pranaygp added a commit that referenced this pull request Jun 11, 2026
…docs-run-idempotency
* origin-https/main: (115 commits)
[core] V2: unify wait+step queue dispatch in suspension processing (#1925)
fix(world-local,world-postgres): make duplicate hook_created idempotent (#2295)
docs(observability): remove MVP implementation detail bullet (#2367)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
Prevent local tests from hanging (#2338)
feat(core): add optional namespace for queue topic prefix (#2305)
[web-shared] Show precise durations in the new trace viewer (#2335)
Validate unique workflow step IDs at build time (#2018)
Move run attributes into their own detail card (#2327)
[core] Forward-port stream reconnect to getReadable level (#2318)
[docs] Add "Step executed multiple times" error page (#2310)
Fix flickering on the detail panel when navigating the trace viewer (#2325)
Version Packages (beta) (#2254)
...
# Conflicts:
#	docs/content/docs/v4/cookbook/advanced/child-workflows.mdx
#	docs/content/docs/v5/cookbook/advanced/child-workflows.mdx
#	docs/content/docs/v5/cookbook/agent-patterns/durable-agent.mdx
pranaygp added a commit that referenced this pull request Jun 11, 2026
* origin/main:
[core] V2: unify wait+step queue dispatch in suspension processing (#1925)
fix(world-local,world-postgres): make duplicate hook_created idempotent (#2295)
docs(observability): remove MVP implementation detail bullet (#2367)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
Prevent local tests from hanging (#2338)
feat(core): add optional namespace for queue topic prefix (#2305)
[web-shared] Show precise durations in the new trace viewer (#2335)
Validate unique workflow step IDs at build time (#2018)
Move run attributes into their own detail card (#2327)
[core] Forward-port stream reconnect to getReadable level (#2318)
[docs] Add "Step executed multiple times" error page (#2310)
Fix flickering on the detail panel when navigating the trace viewer (#2325)
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[core] Fix e2e failure reporting under vitest 4 and preserve fetch error causes - #2355

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VaguelySerious merged 1 commit into
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Jun 11, 2026
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[core] Fix e2e failure reporting under vitest 4 and preserve fetch error causes#2355
VaguelySerious merged 1 commit into
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peter/e2e-failure-diagnostics

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Summary

Three fixes that stop e2e failure information from being destroyed before anyone can look at it. This is groundwork for debugging the chronic E2E Vercel Prod flakes — today most of those failures surface as Error: STACK_TRACE_ERROR or a bare TypeError: fetch failed, neither of which is actionable.

1. github-reporter.ts: port to the vitest 4 reporter API

The reporter relied on the onFinished hook, which vitest 4 no longer calls. Since the vitest upgrade it has been silently dead: the e2e-failures-*.json sidecar was never written (it's listed in the CI artifact upload paths but absent from every recent artifact), and the file-linked ::error annotations were never emitted. Ported to onTestRunEnd / TestModule traversal.

2. aggregate-e2e-results.js: recover real failure messages for timeouts

vitest's JSON reporter serializes only error stacks. For test timeouts, the stack is the task-collection stack, whose first line is Error: STACK_TRACE_ERROR — the actual Test timed out in 60000ms message is dropped entirely (it appears nowhere in the JSON output). The aggregation script now falls back to the real error message from the failures sidecar (carried via error.message by the fixed reporter) when the vitest message is useless.

3. utils.ts: preserve undici fetch error causes

Network-level failures throw TypeError: fetch failed with the actual cause (ECONNRESET, ETIMEDOUT, DNS, ...) on error.cause, and no indication of which URL failed. Reporters don't serialize either. The e2e suite now wraps globalThis.fetch (test process only) and enriches the error in place:

before: TypeError: fetch failed
after: TypeError: fetch failed (POST https://workbench-…vercel.dev/api/trigger — cause: ECONNRESET)

Validation

Ran a scratch test file with all three failure modes (timeout, network failure, assertion) through the exact CI reporter invocation:

  • failures sidecar is written again with real messages (Test timed out in 1500ms.)
  • annotations carry the enriched messages
  • the step-summary script renders the real message instead of STACK_TRACE_ERROR

No published package code is touched (e2e harness + CI scripts only), hence the empty changeset.

🤖 Generated with Claude Code

The custom github-reporter relied on the onFinished reporter hook, which
vitest 4 no longer calls — so the e2e-failures sidecar was never written
and file-linked annotations were never emitted. Port it to onTestRunEnd.
Test timeouts surfaced as 'Error: STACK_TRACE_ERROR' in summaries because
vitest's JSON reporter serializes only error stacks, and for timeouts the
stack is the task-collection stack. The aggregation script now prefers the
real error message from the failures sidecar.
Network failures surfaced as bare 'TypeError: fetch failed'. The e2e suite
now enriches these in place with the request method, URL, and undici cause
code (ECONNRESET, ETIMEDOUT, ...).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
@VaguelySerious
VaguelySerious requested a review from a team as a code ownerJune 11, 2026 10:10
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🦋 Changeset detected

Latest commit: 9ca1ae3

The changes in this PR will be included in the next version bump.

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📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.043s (~)1.006s (~)0.963s101.00x
💻 LocalNitro0.044s (+2.8%)1.006s (~)0.962s101.02x
💻 LocalNext.js (Turbopack)0.059s (+8.0% 🔺)1.006s (~)0.947s101.38x
🐘 PostgresExpress0.065s (-1.5%)1.014s (~)0.949s101.52x
🐘 PostgresNitro0.068s (+8.2% 🔺)1.013s (~)0.945s101.59x
🐘 PostgresNext.js (Turbopack)0.089s (+27.0% 🔺)1.030s (+1.7%)0.941s102.07x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro0.300s (+14.9% 🔺)2.088s (-14.3% 🟢)1.788s101.00x
▲ VercelNext.js (Turbopack)0.386s (+17.3% 🔺)2.406s (+2.8%)2.019s101.29x
▲ VercelExpress0.391s (+43.4% 🔺)1.911s (-29.6% 🟢)1.521s101.30x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

workflow with 1 step

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.091s (-0.5%)2.006s (~)0.916s101.00x
💻 LocalExpress1.093s (-0.7%)2.006s (~)0.913s101.00x
🐘 PostgresExpress1.112s (+1.8%)2.012s (~)0.900s101.02x
🐘 PostgresNitro1.116s (~)2.010s (~)0.894s101.02x
💻 LocalNext.js (Turbopack)1.130s (+1.9%)2.007s (~)0.877s101.04x
🐘 PostgresNext.js (Turbopack)1.132s (-0.9%)2.008s (~)0.876s101.04x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express1.588s (~)3.821s (+7.0% 🔺)2.232s101.00x
▲ VercelNitro1.650s (+5.4% 🔺)3.513s (~)1.863s101.04x
▲ VercelNext.js (Turbopack)1.808s (+8.6% 🔺)3.828s (-6.1% 🟢)2.019s101.14x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro10.487s (-0.6%)11.022s (~)0.535s31.00x
💻 LocalExpress10.521s (~)11.021s (~)0.500s31.00x
🐘 PostgresExpress10.586s (-1.2%)11.025s (-2.9%)0.439s31.01x
🐘 PostgresNitro10.594s (~)11.018s (~)0.424s31.01x
💻 LocalNext.js (Turbopack)10.767s (+1.5%)11.022s (~)0.255s31.03x
🐘 PostgresNext.js (Turbopack)10.814s (~)11.347s (+3.0%)0.533s31.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express13.367s (+1.6%)15.148s (-2.0%)1.780s21.00x
▲ VercelNitro13.812s (+3.7%)15.266s (-2.1%)1.454s21.03x
▲ VercelNext.js (Turbopack)14.204s (+5.2% 🔺)16.075s (~)1.871s21.06x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro13.716s (~)14.027s (~)0.311s51.00x
💻 LocalExpress13.720s (-1.3%)14.026s (-1.4%)0.306s51.00x
🐘 PostgresNitro13.894s (~)14.019s (~)0.125s51.01x
🐘 PostgresExpress13.979s (+1.0%)14.222s (~)0.244s51.02x
💻 LocalNext.js (Turbopack)14.314s (+2.0%)15.029s (+2.7%)0.715s41.04x
🐘 PostgresNext.js (Turbopack)14.649s (~)15.020s (~)0.370s41.07x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express21.128s (-17.1% 🟢)25.412s (-6.7% 🟢)4.284s31.00x
▲ VercelNitro21.318s (-16.5% 🟢)22.945s (-16.9% 🟢)1.627s31.01x
▲ VercelNext.js (Turbopack)21.950s (-14.0% 🟢)23.847s (-12.3% 🟢)1.897s31.04x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro12.403s (~)13.025s (~)0.622s71.00x
💻 LocalExpress12.446s (-1.2%)13.024s (~)0.577s71.00x
🐘 PostgresNitro12.541s (-1.6%)13.021s (~)0.480s71.01x
🐘 PostgresExpress12.686s (~)13.024s (-2.2%)0.337s71.02x
💻 LocalNext.js (Turbopack)13.524s (+4.4%)14.029s (+5.4% 🔺)0.505s71.09x
🐘 PostgresNext.js (Turbopack)14.272s (+3.7%)15.036s (+7.3% 🔺)0.764s61.15x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro29.237s (+0.6%)31.600s (+0.7%)2.363s31.00x
▲ VercelExpress29.351s (-8.5% 🟢)31.658s (-7.5% 🟢)2.306s31.00x
▲ VercelNext.js (Turbopack)31.628s (+6.8% 🔺)34.299s (+7.7% 🔺)2.671s31.08x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.all with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.173s (-7.1% 🟢)2.006s (~)0.833s151.00x
🐘 PostgresExpress1.194s (-0.5%)2.008s (-0.7%)0.815s151.02x
🐘 PostgresNitro1.195s (~)2.007s (~)0.812s151.02x
💻 LocalNitro1.234s (+1.8%)2.005s (~)0.771s151.05x
💻 LocalNext.js (Turbopack)1.301s (+6.3% 🔺)2.006s (~)0.705s151.11x
🐘 PostgresNext.js (Turbopack)1.320s (+5.5% 🔺)2.039s (+1.6%)0.719s151.13x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express2.504s (-9.5% 🟢)4.094s (-13.3% 🟢)1.590s81.00x
▲ VercelNitro2.517s (-9.1% 🟢)3.950s (-9.0% 🟢)1.433s81.00x
▲ VercelNext.js (Turbopack)2.789s (+3.8%)4.662s (+10.5% 🔺)1.873s71.11x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.252s (-0.6%)2.007s (~)0.755s151.00x
🐘 PostgresExpress1.319s (-0.6%)2.076s (+3.0%)0.757s151.05x
💻 LocalExpress1.622s (-13.8% 🟢)2.006s (-9.7% 🟢)0.384s151.30x
🐘 PostgresNext.js (Turbopack)1.649s (+17.0% 🔺)2.181s (+8.6% 🔺)0.532s141.32x
💻 LocalNitro1.727s (+1.3%)2.006s (-3.2%)0.278s151.38x
💻 LocalNext.js (Turbopack)1.770s (+2.5%)2.073s (+3.3%)0.303s151.41x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express3.485s (-14.7% 🟢)5.780s (-6.3% 🟢)2.295s61.00x
▲ VercelNitro3.504s (-13.9% 🟢)5.276s (-15.0% 🟢)1.773s61.01x
▲ VercelNext.js (Turbopack)3.912s (-4.7%)5.887s (-4.1%)1.975s61.12x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.394s (-0.9%)2.007s (~)0.613s151.00x
🐘 PostgresExpress1.436s (+3.0%)2.008s (~)0.571s151.03x
🐘 PostgresNext.js (Turbopack)1.782s (+1.3%)2.314s (+0.8%)0.532s131.28x
💻 LocalExpress3.990s (-24.7% 🟢)4.440s (-26.2% 🟢)0.450s72.86x
💻 LocalNitro4.648s (-1.5%)5.178s (+3.3%)0.530s63.33x
💻 LocalNext.js (Turbopack)4.694s (+6.8% 🔺)5.179s (+3.4%)0.485s63.37x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Next.js (Turbopack)5.879s (~)8.089s (+4.0%)2.210s41.00x
▲ VercelNitro6.034s (-10.4% 🟢)7.827s (-10.1% 🟢)1.794s41.03x
▲ VercelExpress7.226s (+22.4% 🔺)9.576s (+21.3% 🔺)2.351s41.23x

🔍 Observability: Next.js (Turbopack) | Nitro | Express

Promise.race with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.185s (-1.5%)2.012s (~)0.827s151.00x
🐘 PostgresNitro1.186s (-1.2%)2.009s (~)0.824s151.00x
💻 LocalNext.js (Turbopack)1.352s (+3.6%)2.006s (~)0.654s151.14x
🐘 PostgresNext.js (Turbopack)1.398s (+10.4% 🔺)2.176s (+8.3% 🔺)0.778s141.18x
💻 LocalExpress1.486s (-10.3% 🟢)2.006s (-3.3%)0.520s151.25x
💻 LocalNitro1.554s (+0.7%)2.007s (~)0.452s151.31x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.431s (-9.0% 🟢)3.819s (-11.9% 🟢)1.388s81.00x
▲ VercelNext.js (Turbopack)2.726s (-37.7% 🟢)4.406s (-30.0% 🟢)1.680s71.12x
▲ VercelExpress2.760s (+7.5% 🔺)4.377s (+4.2%)1.616s71.14x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

Promise.race with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.254s (-1.6%)2.008s (~)0.754s151.00x
🐘 PostgresExpress1.270s (+2.2%)2.008s (~)0.738s151.01x
🐘 PostgresNext.js (Turbopack)1.469s (+5.2% 🔺)2.152s (+7.2% 🔺)0.683s141.17x
💻 LocalExpress1.793s (-15.6% 🟢)2.149s (-17.1% 🟢)0.355s141.43x
💻 LocalNext.js (Turbopack)2.067s (+2.3%)2.735s (+9.1% 🔺)0.668s111.65x
💻 LocalNitro2.130s (+21.2% 🔺)2.508s (+21.0% 🔺)0.379s121.70x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express3.577s (-2.7%)5.258s (-6.3% 🟢)1.681s61.00x
▲ VercelNitro3.830s (-6.5% 🟢)5.397s (-10.1% 🟢)1.567s61.07x
▲ VercelNext.js (Turbopack)3.947s (-12.7% 🟢)5.691s (-7.7% 🟢)1.744s61.10x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.392s (-4.8%)2.007s (~)0.615s151.00x
🐘 PostgresExpress1.410s (-6.0% 🟢)2.007s (-16.3% 🟢)0.598s151.01x
🐘 PostgresNext.js (Turbopack)1.951s (+17.8% 🔺)2.504s (+20.7% 🔺)0.552s131.40x
💻 LocalExpress4.581s (-21.9% 🟢)5.179s (-16.6% 🟢)0.598s63.29x
💻 LocalNext.js (Turbopack)5.452s (+5.6% 🔺)6.015s (~)0.562s53.92x
💻 LocalNitro5.717s (+20.5% 🔺)6.014s (+12.5% 🔺)0.297s54.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.513s (+11.8% 🔺)7.127s (+5.8% 🔺)1.614s51.00x
▲ VercelNext.js (Turbopack)5.755s (-0.6%)7.799s (+2.9%)2.044s41.04x
▲ VercelExpress7.013s (+38.2% 🔺)9.063s (+36.7% 🔺)2.050s41.27x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro0.566s (-7.1% 🟢)1.006s (~)0.441s601.00x
💻 LocalExpress0.583s (-11.1% 🟢)1.005s (-3.4%)0.421s601.03x
💻 LocalNitro0.587s (-27.0% 🟢)1.005s (-16.6% 🟢)0.418s601.04x
🐘 PostgresExpress0.610s (-8.6% 🟢)1.024s (-2.3%)0.414s591.08x
💻 LocalNext.js (Turbopack)0.857s (+23.1% 🔺)1.039s (+3.5%)0.182s581.52x
🐘 PostgresNext.js (Turbopack)0.941s (+15.9% 🔺)1.377s (+36.8% 🔺)0.436s451.66x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express5.939s (+8.0% 🔺)7.671s (+7.9% 🔺)1.733s81.00x
▲ VercelNitro6.056s (-18.8% 🟢)7.518s (-21.0% 🟢)1.462s81.02x
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Express | Nitro

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.394s (-1.6%)2.030s (+1.1%)0.636s451.00x
🐘 PostgresExpress1.435s (-6.6% 🟢)2.053s (-4.6%)0.618s441.03x
💻 LocalExpress1.477s (-7.2% 🟢)2.005s (-1.2%)0.528s451.06x
💻 LocalNitro1.489s (+1.7%)2.006s (~)0.517s451.07x
💻 LocalNext.js (Turbopack)2.089s (+20.8% 🔺)2.911s (+43.6% 🔺)0.823s311.50x
🐘 PostgresNext.js (Turbopack)2.145s (+10.4% 🔺)2.574s (+18.4% 🔺)0.429s361.54x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express14.723s (-10.1% 🟢)16.752s (-8.5% 🟢)2.029s61.00x
▲ VercelNitro14.762s (+11.7% 🔺)16.203s (+4.7%)1.441s61.00x
▲ VercelNext.js (Turbopack)15.199s (+2.9%)17.372s (+2.6%)2.173s61.03x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro2.774s (-4.8%)3.167s (-3.5%)0.393s381.00x
🐘 PostgresExpress2.779s (-4.6%)3.137s (-11.4% 🟢)0.359s391.00x
💻 LocalExpress3.137s (-8.3% 🟢)3.977s (-0.8%)0.840s311.13x
💻 LocalNitro3.348s (+4.4%)4.009s (~)0.661s301.21x
💻 LocalNext.js (Turbopack)4.238s (+13.7% 🔺)5.010s (+21.9% 🔺)0.773s241.53x
🐘 PostgresNext.js (Turbopack)4.304s (+11.5% 🔺)4.755s (+16.6% 🔺)0.451s261.55x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express30.799s (+6.8% 🔺)33.461s (+8.3% 🔺)2.661s41.00x
▲ VercelNitro31.020s (+4.2%)33.344s (+4.3%)2.324s41.01x
▲ VercelNext.js (Turbopack)31.973s (+18.5% 🔺)34.694s (+18.5% 🔺)2.721s41.04x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express0.221s (-12.2% 🟢)1.006s (~)0.785s601.00x
🐘 PostgresNitro0.225s (-4.5%)1.007s (~)0.782s601.02x
🐘 PostgresNext.js (Turbopack)0.289s (+2.5%)1.010s (~)0.721s601.31x
💻 LocalExpress0.414s (-11.0% 🟢)1.004s (~)0.590s601.87x
💻 LocalNitro0.418s (-1.6%)1.004s (~)0.587s601.89x
💻 LocalNext.js (Turbopack)0.588s (-3.7%)1.022s (-1.6%)0.434s592.66x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express2.424s (+9.6% 🔺)4.113s (~)1.689s151.00x
▲ VercelNitro2.586s (+10.3% 🔺)4.067s (-6.2% 🟢)1.480s151.07x
▲ VercelNext.js (Turbopack)2.760s (+25.5% 🔺)4.441s (+5.2% 🔺)1.681s141.14x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro0.345s (-6.9% 🟢)1.006s (~)0.661s901.00x
🐘 PostgresExpress0.364s (+7.4% 🔺)1.007s (~)0.643s901.05x
🐘 PostgresNext.js (Turbopack)0.612s (+26.9% 🔺)1.141s (+13.4% 🔺)0.528s791.77x
💻 LocalExpress2.041s (-6.8% 🟢)2.564s (-9.2% 🟢)0.522s365.91x
💻 LocalNitro2.142s (+3.8%)2.736s (+3.7%)0.594s336.20x
💻 LocalNext.js (Turbopack)2.281s (-6.9% 🟢)2.947s (-5.2% 🟢)0.665s316.61x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.706s (-87.0% 🟢)7.294s (-84.1% 🟢)1.588s131.00x
▲ VercelExpress5.789s (-86.6% 🟢)7.521s (-83.4% 🟢)1.732s121.01x
▲ VercelNext.js (Turbopack)6.444s (+2.8%)8.035s (-5.4% 🟢)1.592s121.13x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro0.683s (-3.4%)1.007s (~)0.324s1201.00x
🐘 PostgresExpress0.698s (+11.6% 🔺)1.007s (-4.6%)0.308s1201.02x
🐘 PostgresNext.js (Turbopack)1.251s (+27.7% 🔺)1.804s (+12.2% 🔺)0.553s681.83x
💻 LocalExpress8.852s (-14.2% 🟢)9.331s (-14.1% 🟢)0.479s1312.96x
💻 LocalNitro9.747s (+11.9% 🔺)10.277s (+10.1% 🔺)0.530s1214.27x
💻 LocalNext.js (Turbopack)10.651s (+3.3%)11.301s (~)0.650s1115.59x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express15.038s (-1.4%)17.353s (-0.8%)2.315s71.00x
▲ VercelNitro16.319s (-94.8% 🟢)18.256s (-94.2% 🟢)1.937s71.09x
▲ VercelNext.js (Turbopack)18.104s (-88.7% 🟢)20.071s (-87.6% 🟢)1.967s61.20x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Stream Benchmarks(includes TTFB metrics)
workflow with stream

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.151s (-1.5%)2.005s (~)0.010s (-25.0% 🟢)2.016s (~)0.866s101.00x
💻 LocalNitro1.159s (+0.7%)2.005s (~)0.010s (+4.0%)2.018s (~)0.859s101.01x
🐘 PostgresExpress1.172s (-1.8%)1.999s (~)0.001s (-96.8% 🟢)2.010s (-1.6%)0.838s101.02x
🐘 PostgresNitro1.180s (~)1.996s (~)0.001s (-14.3% 🟢)2.010s (~)0.831s101.03x
💻 LocalNext.js (Turbopack)1.201s (+2.8%)2.004s (~)0.010s (+3.0%)2.018s (~)0.817s101.04x
🐘 PostgresNext.js (Turbopack)1.368s (+10.8% 🔺)1.990s (-0.6%)0.055s (+3580.0% 🔺)2.082s (+3.5%)0.715s101.19x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.307s (+6.6% 🔺)3.590s (+5.1% 🔺)1.139s (+120.8% 🔺)5.133s (+14.9% 🔺)2.826s101.00x
▲ VercelNext.js (Turbopack)2.428s (+8.3% 🔺)3.703s (+4.3%)0.831s (-93.3% 🟢)5.003s (-69.7% 🟢)2.576s101.05x
▲ VercelExpress2.466s (+15.0% 🔺)3.846s (+12.8% 🔺)0.713s (+35.6% 🔺)5.057s (+13.7% 🔺)2.591s101.07x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

stream pipeline with 5 transform steps (1MB)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.548s (-5.4% 🟢)2.008s (~)0.012s (+5.7% 🔺)2.022s (~)0.474s301.00x
💻 LocalNitro1.573s (-9.7% 🟢)2.010s (~)0.013s (+38.7% 🔺)2.025s (-7.9% 🟢)0.451s301.02x
🐘 PostgresNitro1.617s (-2.8%)2.002s (~)0.005s (+29.1% 🔺)2.028s (~)0.411s301.04x
🐘 PostgresExpress1.626s (-6.4% 🟢)2.008s (-6.3% 🟢)0.005s (+64.3% 🔺)2.028s (-6.1% 🟢)0.402s301.05x
💻 LocalNext.js (Turbopack)1.715s (+4.6%)2.009s (~)0.011s (+12.9% 🔺)2.024s (~)0.308s301.11x
🐘 PostgresNext.js (Turbopack)2.571s (+45.8% 🔺)3.165s (+57.3% 🔺)0.004s (+4.4%)3.199s (+57.8% 🔺)0.628s191.66x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express6.232s (+8.2% 🔺)7.789s (+4.8%)0.300s (-15.3% 🟢)8.701s (+3.5%)2.470s71.00x
▲ VercelNitro6.288s (+9.4% 🔺)7.594s (~)0.222s (-34.4% 🟢)8.204s (-3.3%)1.915s81.01x
▲ VercelNext.js (Turbopack)7.670s (+20.4% 🔺)9.265s (+16.7% 🔺)0.184s (-49.0% 🟢)9.896s (+11.6% 🔺)2.226s81.23x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express0.721s (-26.2% 🟢)1.050s (-26.4% 🟢)0.000s (-75.4% 🟢)1.060s (-26.8% 🟢)0.339s571.00x
🐘 PostgresNitro0.733s (+1.5%)1.049s (+1.7%)0.000s (-66.1% 🟢)1.066s (+1.7%)0.332s571.02x
🐘 PostgresNext.js (Turbopack)1.323s (+58.9% 🔺)1.765s (+64.7% 🔺)0.000s (-100.0% 🟢)1.783s (+65.1% 🔺)0.460s341.84x
💻 LocalExpress1.347s (-9.2% 🟢)2.012s (~)0.000s (-40.0% 🟢)2.014s (~)0.668s301.87x
💻 LocalNitro1.419s (+4.9%)2.014s (~)0.000s (-60.0% 🟢)2.016s (~)0.596s301.97x
💻 LocalNext.js (Turbopack)1.484s (+2.5%)2.013s (~)0.000s (+12.5% 🔺)2.016s (~)0.532s302.06x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.169s (-12.0% 🟢)4.203s (-17.1% 🟢)0.000s (NaN%)4.575s (-18.7% 🟢)1.406s141.00x
▲ VercelNext.js (Turbopack)3.532s (+6.8% 🔺)4.818s (-1.6%)0.000s (NaN%)5.312s (-2.7%)1.780s121.11x
▲ VercelExpress3.592s (-11.5% 🟢)5.050s (-5.4% 🟢)0.000s (-100.0% 🟢)5.510s (-10.7% 🟢)1.917s111.13x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

fan-out fan-in 10 streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.505s (+6.7% 🔺)2.144s (+7.4% 🔺)0.000s (+Infinity% 🔺)2.187s (+8.7% 🔺)0.682s281.00x
🐘 PostgresExpress1.535s (-4.9%)2.254s (~)0.000s (NaN%)2.271s (~)0.736s271.02x
🐘 PostgresNext.js (Turbopack)2.514s (+45.5% 🔺)3.050s (+34.9% 🔺)0.000s (+Infinity% 🔺)3.065s (+35.1% 🔺)0.551s201.67x
💻 LocalNext.js (Turbopack)2.696s (-16.1% 🟢)3.340s (-14.3% 🟢)0.000s (-32.6% 🟢)3.343s (-14.3% 🟢)0.647s191.79x
💻 LocalExpress3.046s (-8.6% 🟢)3.836s (~)0.000s (-50.0% 🟢)3.839s (~)0.793s162.02x
💻 LocalNitro3.178s (+2.0%)4.028s (+3.4%)0.000s (+33.3% 🔺)4.031s (+3.3%)0.853s152.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.016s (-28.8% 🟢)6.393s (-25.4% 🟢)0.001s (+Infinity% 🔺)6.778s (-25.4% 🟢)1.762s91.00x
▲ VercelExpress5.111s (-19.1% 🟢)6.465s (-15.2% 🟢)0.000s (-70.4% 🟢)7.031s (-14.1% 🟢)1.920s91.02x
▲ VercelNext.js (Turbopack)5.804s (+12.3% 🔺)7.314s (+9.5% 🔺)0.000s (-100.0% 🟢)7.878s (+9.4% 🔺)2.074s81.16x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World🥇 Fastest FrameworkWins
💻 LocalExpress15/21
🐘 PostgresNitro13/21
▲ VercelExpress12/21
Fastest World by Framework

Winner determined by most benchmark wins

Framework🥇 Fastest WorldWins
Express🐘 Postgres12/21
Next.js (Turbopack)💻 Local12/21
Nitro🐘 Postgres14/21
Column Definitions
  • Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
  • TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
  • Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
  • Wall Time: Total testbench time (trigger workflow + poll for result)
  • Overhead: Testbench overhead (Wall Time - Workflow Time)
  • Samples: Number of benchmark iterations run
  • vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

  • 💻 Local: In-memory filesystem world (local development)
  • 🐘 Postgres: PostgreSQL database world (local development)
  • ▲ Vercel: Vercel production/preview deployment
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
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🧪 E2E Test Results

All tests passed

Summary

PassedFailedSkippedTotal
✅ ▲ Vercel Production126602191485
✅ 💻 Local Development167102191890
✅ 📦 Local Production167102191890
✅ 🐘 Local Postgres167102191890
✅ 🪟 Windows13500135
✅ 📋 Other7690176945
Total7183010528235

Details by Category

✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro109026
✅ example109026
✅ express109026
✅ fastify109026
✅ hono109026
✅ nextjs-turbopack13302
✅ nextjs-webpack13302
✅ nitro109026
✅ nuxt109026
✅ sveltekit12807
✅ vite109026
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable110025
✅ express-stable110025
✅ fastify-stable110025
✅ hono-stable110025
✅ nextjs-turbopack-canary116019
✅ nextjs-turbopack-stable-lazy-discovery-disabled13500
✅ nextjs-turbopack-stable-lazy-discovery-enabled13500
✅ nextjs-webpack-canary116019
✅ nextjs-webpack-stable-lazy-discovery-disabled13500
✅ nextjs-webpack-stable-lazy-discovery-enabled13500
✅ nitro-stable110025
✅ nuxt-stable110025
✅ sveltekit-stable12906
✅ vite-stable110025
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable110025
✅ express-stable110025
✅ fastify-stable110025
✅ hono-stable110025
✅ nextjs-turbopack-canary116019
✅ nextjs-turbopack-stable-lazy-discovery-disabled13500
✅ nextjs-turbopack-stable-lazy-discovery-enabled13500
✅ nextjs-webpack-canary116019
✅ nextjs-webpack-stable-lazy-discovery-disabled13500
✅ nextjs-webpack-stable-lazy-discovery-enabled13500
✅ nitro-stable110025
✅ nuxt-stable110025
✅ sveltekit-stable12906
✅ vite-stable110025
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable110025
✅ express-stable110025
✅ fastify-stable110025
✅ hono-stable110025
✅ nextjs-turbopack-canary116019
✅ nextjs-turbopack-stable-lazy-discovery-disabled13500
✅ nextjs-turbopack-stable-lazy-discovery-enabled13500
✅ nextjs-webpack-canary116019
✅ nextjs-webpack-stable-lazy-discovery-disabled13500
✅ nextjs-webpack-stable-lazy-discovery-enabled13500
✅ nitro-stable110025
✅ nuxt-stable110025
✅ sveltekit-stable12906
✅ vite-stable110025
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack13500
✅ 📋 Other
AppPassedFailedSkipped
✅ e2e-local-dev-nest-stable110025
✅ e2e-local-dev-tanstack-start-110025
✅ e2e-local-postgres-nest-stable110025
✅ e2e-local-postgres-tanstack-start-110025
✅ e2e-local-prod-nest-stable110025
✅ e2e-local-prod-tanstack-start-110025
✅ e2e-vercel-prod-tanstack-start109026

📋 View full workflow run

@VaguelySerious
VaguelySerious merged commit 4e8a965 into mainJun 11, 2026
188 of 191 checks passed
@VaguelySerious
VaguelySerious deleted the peter/e2e-failure-diagnostics branch June 11, 2026 10:36
github-actionsBot added a commit that referenced this pull request Jun 11, 2026
…ses (#2355)
Signed-off-by: Peter Wielander <mittgfu@gmail.com>
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Backport PR opened against stable: #2357. (backport job run)

pranaygp added a commit that referenced this pull request Jun 11, 2026
…hook-ready
* origin-https/main: (119 commits)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
Prevent local tests from hanging (#2338)
feat(core): add optional namespace for queue topic prefix (#2305)
[web-shared] Show precise durations in the new trace viewer (#2335)
Validate unique workflow step IDs at build time (#2018)
Move run attributes into their own detail card (#2327)
[core] Forward-port stream reconnect to getReadable level (#2318)
[docs] Add "Step executed multiple times" error page (#2310)
Fix flickering on the detail panel when navigating the trace viewer (#2325)
Version Packages (beta) (#2254)
Patch vulnerable package dependencies (#2301)
Deprecate DurableAgent and update it with WorkflowAgent in v5 docs (#2285)
[codex] Fix partial world-local exclusive writes (#2296)
...
# Conflicts:
#	packages/core/src/runtime.ts
#	packages/core/src/runtime/suspension-handler.ts
pranaygp added a commit that referenced this pull request Jun 11, 2026
…t-race-eager-wait
* origin/main:
docs(observability): remove MVP implementation detail bullet (#2367)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
pranaygp added a commit that referenced this pull request Jun 11, 2026
…docs-run-idempotency
* origin-https/main: (115 commits)
[core] V2: unify wait+step queue dispatch in suspension processing (#1925)
fix(world-local,world-postgres): make duplicate hook_created idempotent (#2295)
docs(observability): remove MVP implementation detail bullet (#2367)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
Prevent local tests from hanging (#2338)
feat(core): add optional namespace for queue topic prefix (#2305)
[web-shared] Show precise durations in the new trace viewer (#2335)
Validate unique workflow step IDs at build time (#2018)
Move run attributes into their own detail card (#2327)
[core] Forward-port stream reconnect to getReadable level (#2318)
[docs] Add "Step executed multiple times" error page (#2310)
Fix flickering on the detail panel when navigating the trace viewer (#2325)
Version Packages (beta) (#2254)
...
# Conflicts:
#	docs/content/docs/v4/cookbook/advanced/child-workflows.mdx
#	docs/content/docs/v5/cookbook/advanced/child-workflows.mdx
#	docs/content/docs/v5/cookbook/agent-patterns/durable-agent.mdx
pranaygp added a commit that referenced this pull request Jun 11, 2026
* origin/main:
[core] V2: unify wait+step queue dispatch in suspension processing (#1925)
fix(world-local,world-postgres): make duplicate hook_created idempotent (#2295)
docs(observability): remove MVP implementation detail bullet (#2367)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
Prevent local tests from hanging (#2338)
feat(core): add optional namespace for queue topic prefix (#2305)
[web-shared] Show precise durations in the new trace viewer (#2335)
Validate unique workflow step IDs at build time (#2018)
Move run attributes into their own detail card (#2327)
[core] Forward-port stream reconnect to getReadable level (#2318)
[docs] Add "Step executed multiple times" error page (#2310)
Fix flickering on the detail panel when navigating the trace viewer (#2325)
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, 'i'); if (__m === '*' || __re.test(location.href)) { // Strip utm_, fbclid, gclid, etc. from all links on page (function() { var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content', 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid', 'ref', 'ref_src', 'source', 'medium', 'campaign']; function cleanUrl(url) { try { var u = new URL(url, window.location.origin); var changed = false; trackingParams.forEach(function(p) { if (u.searchParams.has(p)) { u.searchParams.delete(p); changed = true; } }); return changed ? u.toString() : url; } catch (e) { return url; } } function cleanLinks() { document.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } cleanLinks(); var observer = new MutationObserver(function(mutations) { mutations.forEach(function(m) { m.addedNodes.forEach(function(node) { if (node.nodeType === 1) { if (node.tagName === 'A') cleanLinks(); node.querySelectorAll('a[href]').forEach(function(a) { var clean = cleanUrl(a.href); if (clean !== a.href) a.href = clean; }); } }); }); }); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); } })(); (function(){ try { var __m = "youtube.com"; var __re = new RegExp('^' + "youtube\\.com" + ' [core] Fix e2e failure reporting under vitest 4 and preserve fetch error causes by VaguelySerious · Pull Request #2355 · vercel/workflow · GitHub
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[core] Fix e2e failure reporting under vitest 4 and preserve fetch error causes - #2355

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VaguelySerious merged 1 commit into
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Jun 11, 2026
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[core] Fix e2e failure reporting under vitest 4 and preserve fetch error causes#2355
VaguelySerious merged 1 commit into
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peter/e2e-failure-diagnostics

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Summary

Three fixes that stop e2e failure information from being destroyed before anyone can look at it. This is groundwork for debugging the chronic E2E Vercel Prod flakes — today most of those failures surface as Error: STACK_TRACE_ERROR or a bare TypeError: fetch failed, neither of which is actionable.

1. github-reporter.ts: port to the vitest 4 reporter API

The reporter relied on the onFinished hook, which vitest 4 no longer calls. Since the vitest upgrade it has been silently dead: the e2e-failures-*.json sidecar was never written (it's listed in the CI artifact upload paths but absent from every recent artifact), and the file-linked ::error annotations were never emitted. Ported to onTestRunEnd / TestModule traversal.

2. aggregate-e2e-results.js: recover real failure messages for timeouts

vitest's JSON reporter serializes only error stacks. For test timeouts, the stack is the task-collection stack, whose first line is Error: STACK_TRACE_ERROR — the actual Test timed out in 60000ms message is dropped entirely (it appears nowhere in the JSON output). The aggregation script now falls back to the real error message from the failures sidecar (carried via error.message by the fixed reporter) when the vitest message is useless.

3. utils.ts: preserve undici fetch error causes

Network-level failures throw TypeError: fetch failed with the actual cause (ECONNRESET, ETIMEDOUT, DNS, ...) on error.cause, and no indication of which URL failed. Reporters don't serialize either. The e2e suite now wraps globalThis.fetch (test process only) and enriches the error in place:

before: TypeError: fetch failed
after: TypeError: fetch failed (POST https://workbench-…vercel.dev/api/trigger — cause: ECONNRESET)

Validation

Ran a scratch test file with all three failure modes (timeout, network failure, assertion) through the exact CI reporter invocation:

  • failures sidecar is written again with real messages (Test timed out in 1500ms.)
  • annotations carry the enriched messages
  • the step-summary script renders the real message instead of STACK_TRACE_ERROR

No published package code is touched (e2e harness + CI scripts only), hence the empty changeset.

🤖 Generated with Claude Code

The custom github-reporter relied on the onFinished reporter hook, which
vitest 4 no longer calls — so the e2e-failures sidecar was never written
and file-linked annotations were never emitted. Port it to onTestRunEnd.
Test timeouts surfaced as 'Error: STACK_TRACE_ERROR' in summaries because
vitest's JSON reporter serializes only error stacks, and for timeouts the
stack is the task-collection stack. The aggregation script now prefers the
real error message from the failures sidecar.
Network failures surfaced as bare 'TypeError: fetch failed'. The e2e suite
now enriches these in place with the request method, URL, and undici cause
code (ECONNRESET, ETIMEDOUT, ...).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
@VaguelySerious
VaguelySerious requested a review from a team as a code ownerJune 11, 2026 10:10
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🦋 Changeset detected

Latest commit: 9ca1ae3

The changes in this PR will be included in the next version bump.

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📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.043s (~)1.006s (~)0.963s101.00x
💻 LocalNitro0.044s (+2.8%)1.006s (~)0.962s101.02x
💻 LocalNext.js (Turbopack)0.059s (+8.0% 🔺)1.006s (~)0.947s101.38x
🐘 PostgresExpress0.065s (-1.5%)1.014s (~)0.949s101.52x
🐘 PostgresNitro0.068s (+8.2% 🔺)1.013s (~)0.945s101.59x
🐘 PostgresNext.js (Turbopack)0.089s (+27.0% 🔺)1.030s (+1.7%)0.941s102.07x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro0.300s (+14.9% 🔺)2.088s (-14.3% 🟢)1.788s101.00x
▲ VercelNext.js (Turbopack)0.386s (+17.3% 🔺)2.406s (+2.8%)2.019s101.29x
▲ VercelExpress0.391s (+43.4% 🔺)1.911s (-29.6% 🟢)1.521s101.30x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

workflow with 1 step

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.091s (-0.5%)2.006s (~)0.916s101.00x
💻 LocalExpress1.093s (-0.7%)2.006s (~)0.913s101.00x
🐘 PostgresExpress1.112s (+1.8%)2.012s (~)0.900s101.02x
🐘 PostgresNitro1.116s (~)2.010s (~)0.894s101.02x
💻 LocalNext.js (Turbopack)1.130s (+1.9%)2.007s (~)0.877s101.04x
🐘 PostgresNext.js (Turbopack)1.132s (-0.9%)2.008s (~)0.876s101.04x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express1.588s (~)3.821s (+7.0% 🔺)2.232s101.00x
▲ VercelNitro1.650s (+5.4% 🔺)3.513s (~)1.863s101.04x
▲ VercelNext.js (Turbopack)1.808s (+8.6% 🔺)3.828s (-6.1% 🟢)2.019s101.14x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro10.487s (-0.6%)11.022s (~)0.535s31.00x
💻 LocalExpress10.521s (~)11.021s (~)0.500s31.00x
🐘 PostgresExpress10.586s (-1.2%)11.025s (-2.9%)0.439s31.01x
🐘 PostgresNitro10.594s (~)11.018s (~)0.424s31.01x
💻 LocalNext.js (Turbopack)10.767s (+1.5%)11.022s (~)0.255s31.03x
🐘 PostgresNext.js (Turbopack)10.814s (~)11.347s (+3.0%)0.533s31.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express13.367s (+1.6%)15.148s (-2.0%)1.780s21.00x
▲ VercelNitro13.812s (+3.7%)15.266s (-2.1%)1.454s21.03x
▲ VercelNext.js (Turbopack)14.204s (+5.2% 🔺)16.075s (~)1.871s21.06x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro13.716s (~)14.027s (~)0.311s51.00x
💻 LocalExpress13.720s (-1.3%)14.026s (-1.4%)0.306s51.00x
🐘 PostgresNitro13.894s (~)14.019s (~)0.125s51.01x
🐘 PostgresExpress13.979s (+1.0%)14.222s (~)0.244s51.02x
💻 LocalNext.js (Turbopack)14.314s (+2.0%)15.029s (+2.7%)0.715s41.04x
🐘 PostgresNext.js (Turbopack)14.649s (~)15.020s (~)0.370s41.07x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express21.128s (-17.1% 🟢)25.412s (-6.7% 🟢)4.284s31.00x
▲ VercelNitro21.318s (-16.5% 🟢)22.945s (-16.9% 🟢)1.627s31.01x
▲ VercelNext.js (Turbopack)21.950s (-14.0% 🟢)23.847s (-12.3% 🟢)1.897s31.04x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro12.403s (~)13.025s (~)0.622s71.00x
💻 LocalExpress12.446s (-1.2%)13.024s (~)0.577s71.00x
🐘 PostgresNitro12.541s (-1.6%)13.021s (~)0.480s71.01x
🐘 PostgresExpress12.686s (~)13.024s (-2.2%)0.337s71.02x
💻 LocalNext.js (Turbopack)13.524s (+4.4%)14.029s (+5.4% 🔺)0.505s71.09x
🐘 PostgresNext.js (Turbopack)14.272s (+3.7%)15.036s (+7.3% 🔺)0.764s61.15x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro29.237s (+0.6%)31.600s (+0.7%)2.363s31.00x
▲ VercelExpress29.351s (-8.5% 🟢)31.658s (-7.5% 🟢)2.306s31.00x
▲ VercelNext.js (Turbopack)31.628s (+6.8% 🔺)34.299s (+7.7% 🔺)2.671s31.08x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.all with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.173s (-7.1% 🟢)2.006s (~)0.833s151.00x
🐘 PostgresExpress1.194s (-0.5%)2.008s (-0.7%)0.815s151.02x
🐘 PostgresNitro1.195s (~)2.007s (~)0.812s151.02x
💻 LocalNitro1.234s (+1.8%)2.005s (~)0.771s151.05x
💻 LocalNext.js (Turbopack)1.301s (+6.3% 🔺)2.006s (~)0.705s151.11x
🐘 PostgresNext.js (Turbopack)1.320s (+5.5% 🔺)2.039s (+1.6%)0.719s151.13x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express2.504s (-9.5% 🟢)4.094s (-13.3% 🟢)1.590s81.00x
▲ VercelNitro2.517s (-9.1% 🟢)3.950s (-9.0% 🟢)1.433s81.00x
▲ VercelNext.js (Turbopack)2.789s (+3.8%)4.662s (+10.5% 🔺)1.873s71.11x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.252s (-0.6%)2.007s (~)0.755s151.00x
🐘 PostgresExpress1.319s (-0.6%)2.076s (+3.0%)0.757s151.05x
💻 LocalExpress1.622s (-13.8% 🟢)2.006s (-9.7% 🟢)0.384s151.30x
🐘 PostgresNext.js (Turbopack)1.649s (+17.0% 🔺)2.181s (+8.6% 🔺)0.532s141.32x
💻 LocalNitro1.727s (+1.3%)2.006s (-3.2%)0.278s151.38x
💻 LocalNext.js (Turbopack)1.770s (+2.5%)2.073s (+3.3%)0.303s151.41x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express3.485s (-14.7% 🟢)5.780s (-6.3% 🟢)2.295s61.00x
▲ VercelNitro3.504s (-13.9% 🟢)5.276s (-15.0% 🟢)1.773s61.01x
▲ VercelNext.js (Turbopack)3.912s (-4.7%)5.887s (-4.1%)1.975s61.12x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.394s (-0.9%)2.007s (~)0.613s151.00x
🐘 PostgresExpress1.436s (+3.0%)2.008s (~)0.571s151.03x
🐘 PostgresNext.js (Turbopack)1.782s (+1.3%)2.314s (+0.8%)0.532s131.28x
💻 LocalExpress3.990s (-24.7% 🟢)4.440s (-26.2% 🟢)0.450s72.86x
💻 LocalNitro4.648s (-1.5%)5.178s (+3.3%)0.530s63.33x
💻 LocalNext.js (Turbopack)4.694s (+6.8% 🔺)5.179s (+3.4%)0.485s63.37x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Next.js (Turbopack)5.879s (~)8.089s (+4.0%)2.210s41.00x
▲ VercelNitro6.034s (-10.4% 🟢)7.827s (-10.1% 🟢)1.794s41.03x
▲ VercelExpress7.226s (+22.4% 🔺)9.576s (+21.3% 🔺)2.351s41.23x

🔍 Observability: Next.js (Turbopack) | Nitro | Express

Promise.race with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.185s (-1.5%)2.012s (~)0.827s151.00x
🐘 PostgresNitro1.186s (-1.2%)2.009s (~)0.824s151.00x
💻 LocalNext.js (Turbopack)1.352s (+3.6%)2.006s (~)0.654s151.14x
🐘 PostgresNext.js (Turbopack)1.398s (+10.4% 🔺)2.176s (+8.3% 🔺)0.778s141.18x
💻 LocalExpress1.486s (-10.3% 🟢)2.006s (-3.3%)0.520s151.25x
💻 LocalNitro1.554s (+0.7%)2.007s (~)0.452s151.31x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.431s (-9.0% 🟢)3.819s (-11.9% 🟢)1.388s81.00x
▲ VercelNext.js (Turbopack)2.726s (-37.7% 🟢)4.406s (-30.0% 🟢)1.680s71.12x
▲ VercelExpress2.760s (+7.5% 🔺)4.377s (+4.2%)1.616s71.14x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

Promise.race with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.254s (-1.6%)2.008s (~)0.754s151.00x
🐘 PostgresExpress1.270s (+2.2%)2.008s (~)0.738s151.01x
🐘 PostgresNext.js (Turbopack)1.469s (+5.2% 🔺)2.152s (+7.2% 🔺)0.683s141.17x
💻 LocalExpress1.793s (-15.6% 🟢)2.149s (-17.1% 🟢)0.355s141.43x
💻 LocalNext.js (Turbopack)2.067s (+2.3%)2.735s (+9.1% 🔺)0.668s111.65x
💻 LocalNitro2.130s (+21.2% 🔺)2.508s (+21.0% 🔺)0.379s121.70x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express3.577s (-2.7%)5.258s (-6.3% 🟢)1.681s61.00x
▲ VercelNitro3.830s (-6.5% 🟢)5.397s (-10.1% 🟢)1.567s61.07x
▲ VercelNext.js (Turbopack)3.947s (-12.7% 🟢)5.691s (-7.7% 🟢)1.744s61.10x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.392s (-4.8%)2.007s (~)0.615s151.00x
🐘 PostgresExpress1.410s (-6.0% 🟢)2.007s (-16.3% 🟢)0.598s151.01x
🐘 PostgresNext.js (Turbopack)1.951s (+17.8% 🔺)2.504s (+20.7% 🔺)0.552s131.40x
💻 LocalExpress4.581s (-21.9% 🟢)5.179s (-16.6% 🟢)0.598s63.29x
💻 LocalNext.js (Turbopack)5.452s (+5.6% 🔺)6.015s (~)0.562s53.92x
💻 LocalNitro5.717s (+20.5% 🔺)6.014s (+12.5% 🔺)0.297s54.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.513s (+11.8% 🔺)7.127s (+5.8% 🔺)1.614s51.00x
▲ VercelNext.js (Turbopack)5.755s (-0.6%)7.799s (+2.9%)2.044s41.04x
▲ VercelExpress7.013s (+38.2% 🔺)9.063s (+36.7% 🔺)2.050s41.27x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro0.566s (-7.1% 🟢)1.006s (~)0.441s601.00x
💻 LocalExpress0.583s (-11.1% 🟢)1.005s (-3.4%)0.421s601.03x
💻 LocalNitro0.587s (-27.0% 🟢)1.005s (-16.6% 🟢)0.418s601.04x
🐘 PostgresExpress0.610s (-8.6% 🟢)1.024s (-2.3%)0.414s591.08x
💻 LocalNext.js (Turbopack)0.857s (+23.1% 🔺)1.039s (+3.5%)0.182s581.52x
🐘 PostgresNext.js (Turbopack)0.941s (+15.9% 🔺)1.377s (+36.8% 🔺)0.436s451.66x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express5.939s (+8.0% 🔺)7.671s (+7.9% 🔺)1.733s81.00x
▲ VercelNitro6.056s (-18.8% 🟢)7.518s (-21.0% 🟢)1.462s81.02x
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Express | Nitro

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.394s (-1.6%)2.030s (+1.1%)0.636s451.00x
🐘 PostgresExpress1.435s (-6.6% 🟢)2.053s (-4.6%)0.618s441.03x
💻 LocalExpress1.477s (-7.2% 🟢)2.005s (-1.2%)0.528s451.06x
💻 LocalNitro1.489s (+1.7%)2.006s (~)0.517s451.07x
💻 LocalNext.js (Turbopack)2.089s (+20.8% 🔺)2.911s (+43.6% 🔺)0.823s311.50x
🐘 PostgresNext.js (Turbopack)2.145s (+10.4% 🔺)2.574s (+18.4% 🔺)0.429s361.54x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express14.723s (-10.1% 🟢)16.752s (-8.5% 🟢)2.029s61.00x
▲ VercelNitro14.762s (+11.7% 🔺)16.203s (+4.7%)1.441s61.00x
▲ VercelNext.js (Turbopack)15.199s (+2.9%)17.372s (+2.6%)2.173s61.03x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro2.774s (-4.8%)3.167s (-3.5%)0.393s381.00x
🐘 PostgresExpress2.779s (-4.6%)3.137s (-11.4% 🟢)0.359s391.00x
💻 LocalExpress3.137s (-8.3% 🟢)3.977s (-0.8%)0.840s311.13x
💻 LocalNitro3.348s (+4.4%)4.009s (~)0.661s301.21x
💻 LocalNext.js (Turbopack)4.238s (+13.7% 🔺)5.010s (+21.9% 🔺)0.773s241.53x
🐘 PostgresNext.js (Turbopack)4.304s (+11.5% 🔺)4.755s (+16.6% 🔺)0.451s261.55x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express30.799s (+6.8% 🔺)33.461s (+8.3% 🔺)2.661s41.00x
▲ VercelNitro31.020s (+4.2%)33.344s (+4.3%)2.324s41.01x
▲ VercelNext.js (Turbopack)31.973s (+18.5% 🔺)34.694s (+18.5% 🔺)2.721s41.04x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express0.221s (-12.2% 🟢)1.006s (~)0.785s601.00x
🐘 PostgresNitro0.225s (-4.5%)1.007s (~)0.782s601.02x
🐘 PostgresNext.js (Turbopack)0.289s (+2.5%)1.010s (~)0.721s601.31x
💻 LocalExpress0.414s (-11.0% 🟢)1.004s (~)0.590s601.87x
💻 LocalNitro0.418s (-1.6%)1.004s (~)0.587s601.89x
💻 LocalNext.js (Turbopack)0.588s (-3.7%)1.022s (-1.6%)0.434s592.66x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express2.424s (+9.6% 🔺)4.113s (~)1.689s151.00x
▲ VercelNitro2.586s (+10.3% 🔺)4.067s (-6.2% 🟢)1.480s151.07x
▲ VercelNext.js (Turbopack)2.760s (+25.5% 🔺)4.441s (+5.2% 🔺)1.681s141.14x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro0.345s (-6.9% 🟢)1.006s (~)0.661s901.00x
🐘 PostgresExpress0.364s (+7.4% 🔺)1.007s (~)0.643s901.05x
🐘 PostgresNext.js (Turbopack)0.612s (+26.9% 🔺)1.141s (+13.4% 🔺)0.528s791.77x
💻 LocalExpress2.041s (-6.8% 🟢)2.564s (-9.2% 🟢)0.522s365.91x
💻 LocalNitro2.142s (+3.8%)2.736s (+3.7%)0.594s336.20x
💻 LocalNext.js (Turbopack)2.281s (-6.9% 🟢)2.947s (-5.2% 🟢)0.665s316.61x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.706s (-87.0% 🟢)7.294s (-84.1% 🟢)1.588s131.00x
▲ VercelExpress5.789s (-86.6% 🟢)7.521s (-83.4% 🟢)1.732s121.01x
▲ VercelNext.js (Turbopack)6.444s (+2.8%)8.035s (-5.4% 🟢)1.592s121.13x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro0.683s (-3.4%)1.007s (~)0.324s1201.00x
🐘 PostgresExpress0.698s (+11.6% 🔺)1.007s (-4.6%)0.308s1201.02x
🐘 PostgresNext.js (Turbopack)1.251s (+27.7% 🔺)1.804s (+12.2% 🔺)0.553s681.83x
💻 LocalExpress8.852s (-14.2% 🟢)9.331s (-14.1% 🟢)0.479s1312.96x
💻 LocalNitro9.747s (+11.9% 🔺)10.277s (+10.1% 🔺)0.530s1214.27x
💻 LocalNext.js (Turbopack)10.651s (+3.3%)11.301s (~)0.650s1115.59x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express15.038s (-1.4%)17.353s (-0.8%)2.315s71.00x
▲ VercelNitro16.319s (-94.8% 🟢)18.256s (-94.2% 🟢)1.937s71.09x
▲ VercelNext.js (Turbopack)18.104s (-88.7% 🟢)20.071s (-87.6% 🟢)1.967s61.20x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Stream Benchmarks(includes TTFB metrics)
workflow with stream

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.151s (-1.5%)2.005s (~)0.010s (-25.0% 🟢)2.016s (~)0.866s101.00x
💻 LocalNitro1.159s (+0.7%)2.005s (~)0.010s (+4.0%)2.018s (~)0.859s101.01x
🐘 PostgresExpress1.172s (-1.8%)1.999s (~)0.001s (-96.8% 🟢)2.010s (-1.6%)0.838s101.02x
🐘 PostgresNitro1.180s (~)1.996s (~)0.001s (-14.3% 🟢)2.010s (~)0.831s101.03x
💻 LocalNext.js (Turbopack)1.201s (+2.8%)2.004s (~)0.010s (+3.0%)2.018s (~)0.817s101.04x
🐘 PostgresNext.js (Turbopack)1.368s (+10.8% 🔺)1.990s (-0.6%)0.055s (+3580.0% 🔺)2.082s (+3.5%)0.715s101.19x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.307s (+6.6% 🔺)3.590s (+5.1% 🔺)1.139s (+120.8% 🔺)5.133s (+14.9% 🔺)2.826s101.00x
▲ VercelNext.js (Turbopack)2.428s (+8.3% 🔺)3.703s (+4.3%)0.831s (-93.3% 🟢)5.003s (-69.7% 🟢)2.576s101.05x
▲ VercelExpress2.466s (+15.0% 🔺)3.846s (+12.8% 🔺)0.713s (+35.6% 🔺)5.057s (+13.7% 🔺)2.591s101.07x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

stream pipeline with 5 transform steps (1MB)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.548s (-5.4% 🟢)2.008s (~)0.012s (+5.7% 🔺)2.022s (~)0.474s301.00x
💻 LocalNitro1.573s (-9.7% 🟢)2.010s (~)0.013s (+38.7% 🔺)2.025s (-7.9% 🟢)0.451s301.02x
🐘 PostgresNitro1.617s (-2.8%)2.002s (~)0.005s (+29.1% 🔺)2.028s (~)0.411s301.04x
🐘 PostgresExpress1.626s (-6.4% 🟢)2.008s (-6.3% 🟢)0.005s (+64.3% 🔺)2.028s (-6.1% 🟢)0.402s301.05x
💻 LocalNext.js (Turbopack)1.715s (+4.6%)2.009s (~)0.011s (+12.9% 🔺)2.024s (~)0.308s301.11x
🐘 PostgresNext.js (Turbopack)2.571s (+45.8% 🔺)3.165s (+57.3% 🔺)0.004s (+4.4%)3.199s (+57.8% 🔺)0.628s191.66x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express6.232s (+8.2% 🔺)7.789s (+4.8%)0.300s (-15.3% 🟢)8.701s (+3.5%)2.470s71.00x
▲ VercelNitro6.288s (+9.4% 🔺)7.594s (~)0.222s (-34.4% 🟢)8.204s (-3.3%)1.915s81.01x
▲ VercelNext.js (Turbopack)7.670s (+20.4% 🔺)9.265s (+16.7% 🔺)0.184s (-49.0% 🟢)9.896s (+11.6% 🔺)2.226s81.23x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express0.721s (-26.2% 🟢)1.050s (-26.4% 🟢)0.000s (-75.4% 🟢)1.060s (-26.8% 🟢)0.339s571.00x
🐘 PostgresNitro0.733s (+1.5%)1.049s (+1.7%)0.000s (-66.1% 🟢)1.066s (+1.7%)0.332s571.02x
🐘 PostgresNext.js (Turbopack)1.323s (+58.9% 🔺)1.765s (+64.7% 🔺)0.000s (-100.0% 🟢)1.783s (+65.1% 🔺)0.460s341.84x
💻 LocalExpress1.347s (-9.2% 🟢)2.012s (~)0.000s (-40.0% 🟢)2.014s (~)0.668s301.87x
💻 LocalNitro1.419s (+4.9%)2.014s (~)0.000s (-60.0% 🟢)2.016s (~)0.596s301.97x
💻 LocalNext.js (Turbopack)1.484s (+2.5%)2.013s (~)0.000s (+12.5% 🔺)2.016s (~)0.532s302.06x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.169s (-12.0% 🟢)4.203s (-17.1% 🟢)0.000s (NaN%)4.575s (-18.7% 🟢)1.406s141.00x
▲ VercelNext.js (Turbopack)3.532s (+6.8% 🔺)4.818s (-1.6%)0.000s (NaN%)5.312s (-2.7%)1.780s121.11x
▲ VercelExpress3.592s (-11.5% 🟢)5.050s (-5.4% 🟢)0.000s (-100.0% 🟢)5.510s (-10.7% 🟢)1.917s111.13x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

fan-out fan-in 10 streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.505s (+6.7% 🔺)2.144s (+7.4% 🔺)0.000s (+Infinity% 🔺)2.187s (+8.7% 🔺)0.682s281.00x
🐘 PostgresExpress1.535s (-4.9%)2.254s (~)0.000s (NaN%)2.271s (~)0.736s271.02x
🐘 PostgresNext.js (Turbopack)2.514s (+45.5% 🔺)3.050s (+34.9% 🔺)0.000s (+Infinity% 🔺)3.065s (+35.1% 🔺)0.551s201.67x
💻 LocalNext.js (Turbopack)2.696s (-16.1% 🟢)3.340s (-14.3% 🟢)0.000s (-32.6% 🟢)3.343s (-14.3% 🟢)0.647s191.79x
💻 LocalExpress3.046s (-8.6% 🟢)3.836s (~)0.000s (-50.0% 🟢)3.839s (~)0.793s162.02x
💻 LocalNitro3.178s (+2.0%)4.028s (+3.4%)0.000s (+33.3% 🔺)4.031s (+3.3%)0.853s152.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.016s (-28.8% 🟢)6.393s (-25.4% 🟢)0.001s (+Infinity% 🔺)6.778s (-25.4% 🟢)1.762s91.00x
▲ VercelExpress5.111s (-19.1% 🟢)6.465s (-15.2% 🟢)0.000s (-70.4% 🟢)7.031s (-14.1% 🟢)1.920s91.02x
▲ VercelNext.js (Turbopack)5.804s (+12.3% 🔺)7.314s (+9.5% 🔺)0.000s (-100.0% 🟢)7.878s (+9.4% 🔺)2.074s81.16x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World🥇 Fastest FrameworkWins
💻 LocalExpress15/21
🐘 PostgresNitro13/21
▲ VercelExpress12/21
Fastest World by Framework

Winner determined by most benchmark wins

Framework🥇 Fastest WorldWins
Express🐘 Postgres12/21
Next.js (Turbopack)💻 Local12/21
Nitro🐘 Postgres14/21
Column Definitions
  • Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
  • TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
  • Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
  • Wall Time: Total testbench time (trigger workflow + poll for result)
  • Overhead: Testbench overhead (Wall Time - Workflow Time)
  • Samples: Number of benchmark iterations run
  • vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

  • 💻 Local: In-memory filesystem world (local development)
  • 🐘 Postgres: PostgreSQL database world (local development)
  • ▲ Vercel: Vercel production/preview deployment
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Redis + BullMQ: Community world (local development)
  • 🌐 Cloudflare: Community world (local development)
  • 🌐 MySQL: Community world (local development)
  • 🌐 Azure: Community world (local development)
  • 🌐 NATS JetStream: Community world (local development)
  • 🌐 Upstash: Community world (local development)

📋 View full workflow run

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github-actionsBot commented Jun 11, 2026

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🧪 E2E Test Results

All tests passed

Summary

PassedFailedSkippedTotal
✅ ▲ Vercel Production126602191485
✅ 💻 Local Development167102191890
✅ 📦 Local Production167102191890
✅ 🐘 Local Postgres167102191890
✅ 🪟 Windows13500135
✅ 📋 Other7690176945
Total7183010528235

Details by Category

✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro109026
✅ example109026
✅ express109026
✅ fastify109026
✅ hono109026
✅ nextjs-turbopack13302
✅ nextjs-webpack13302
✅ nitro109026
✅ nuxt109026
✅ sveltekit12807
✅ vite109026
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable110025
✅ express-stable110025
✅ fastify-stable110025
✅ hono-stable110025
✅ nextjs-turbopack-canary116019
✅ nextjs-turbopack-stable-lazy-discovery-disabled13500
✅ nextjs-turbopack-stable-lazy-discovery-enabled13500
✅ nextjs-webpack-canary116019
✅ nextjs-webpack-stable-lazy-discovery-disabled13500
✅ nextjs-webpack-stable-lazy-discovery-enabled13500
✅ nitro-stable110025
✅ nuxt-stable110025
✅ sveltekit-stable12906
✅ vite-stable110025
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable110025
✅ express-stable110025
✅ fastify-stable110025
✅ hono-stable110025
✅ nextjs-turbopack-canary116019
✅ nextjs-turbopack-stable-lazy-discovery-disabled13500
✅ nextjs-turbopack-stable-lazy-discovery-enabled13500
✅ nextjs-webpack-canary116019
✅ nextjs-webpack-stable-lazy-discovery-disabled13500
✅ nextjs-webpack-stable-lazy-discovery-enabled13500
✅ nitro-stable110025
✅ nuxt-stable110025
✅ sveltekit-stable12906
✅ vite-stable110025
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable110025
✅ express-stable110025
✅ fastify-stable110025
✅ hono-stable110025
✅ nextjs-turbopack-canary116019
✅ nextjs-turbopack-stable-lazy-discovery-disabled13500
✅ nextjs-turbopack-stable-lazy-discovery-enabled13500
✅ nextjs-webpack-canary116019
✅ nextjs-webpack-stable-lazy-discovery-disabled13500
✅ nextjs-webpack-stable-lazy-discovery-enabled13500
✅ nitro-stable110025
✅ nuxt-stable110025
✅ sveltekit-stable12906
✅ vite-stable110025
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack13500
✅ 📋 Other
AppPassedFailedSkipped
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✅ e2e-vercel-prod-tanstack-start109026

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VaguelySerious merged commit 4e8a965 into mainJun 11, 2026
188 of 191 checks passed
@VaguelySerious
VaguelySerious deleted the peter/e2e-failure-diagnostics branch June 11, 2026 10:36
github-actionsBot added a commit that referenced this pull request Jun 11, 2026
…ses (#2355)
Signed-off-by: Peter Wielander <mittgfu@gmail.com>
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Backport PR opened against stable: #2357. (backport job run)

pranaygp added a commit that referenced this pull request Jun 11, 2026
…hook-ready
* origin-https/main: (119 commits)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
Prevent local tests from hanging (#2338)
feat(core): add optional namespace for queue topic prefix (#2305)
[web-shared] Show precise durations in the new trace viewer (#2335)
Validate unique workflow step IDs at build time (#2018)
Move run attributes into their own detail card (#2327)
[core] Forward-port stream reconnect to getReadable level (#2318)
[docs] Add "Step executed multiple times" error page (#2310)
Fix flickering on the detail panel when navigating the trace viewer (#2325)
Version Packages (beta) (#2254)
Patch vulnerable package dependencies (#2301)
Deprecate DurableAgent and update it with WorkflowAgent in v5 docs (#2285)
[codex] Fix partial world-local exclusive writes (#2296)
...
# Conflicts:
#	packages/core/src/runtime.ts
#	packages/core/src/runtime/suspension-handler.ts
pranaygp added a commit that referenced this pull request Jun 11, 2026
…t-race-eager-wait
* origin/main:
docs(observability): remove MVP implementation detail bullet (#2367)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
pranaygp added a commit that referenced this pull request Jun 11, 2026
…docs-run-idempotency
* origin-https/main: (115 commits)
[core] V2: unify wait+step queue dispatch in suspension processing (#1925)
fix(world-local,world-postgres): make duplicate hook_created idempotent (#2295)
docs(observability): remove MVP implementation detail bullet (#2367)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
Prevent local tests from hanging (#2338)
feat(core): add optional namespace for queue topic prefix (#2305)
[web-shared] Show precise durations in the new trace viewer (#2335)
Validate unique workflow step IDs at build time (#2018)
Move run attributes into their own detail card (#2327)
[core] Forward-port stream reconnect to getReadable level (#2318)
[docs] Add "Step executed multiple times" error page (#2310)
Fix flickering on the detail panel when navigating the trace viewer (#2325)
Version Packages (beta) (#2254)
...
# Conflicts:
#	docs/content/docs/v4/cookbook/advanced/child-workflows.mdx
#	docs/content/docs/v5/cookbook/advanced/child-workflows.mdx
#	docs/content/docs/v5/cookbook/agent-patterns/durable-agent.mdx
pranaygp added a commit that referenced this pull request Jun 11, 2026
* origin/main:
[core] V2: unify wait+step queue dispatch in suspension processing (#1925)
fix(world-local,world-postgres): make duplicate hook_created idempotent (#2295)
docs(observability): remove MVP implementation detail bullet (#2367)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
Prevent local tests from hanging (#2338)
feat(core): add optional namespace for queue topic prefix (#2305)
[web-shared] Show precise durations in the new trace viewer (#2335)
Validate unique workflow step IDs at build time (#2018)
Move run attributes into their own detail card (#2327)
[core] Forward-port stream reconnect to getReadable level (#2318)
[docs] Add "Step executed multiple times" error page (#2310)
Fix flickering on the detail panel when navigating the trace viewer (#2325)
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@VaguelySerious
, 'i'); if (__m === '*' || __re.test(location.href)) { // Auto-enable theater mode on YouTube (function() { function tryTheater() { var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]'); if (btn && !btn.classList.contains('activated')) { btn.click(); } } // Try immediately tryTheater(); // Try after navigation (SPA) var lastUrl = location.href; setInterval(function() { if (location.href !== lastUrl) { lastUrl = location.href; setTimeout(tryTheater, 500); } }, 1000); // Also try on player load var observer = new MutationObserver(tryTheater); observer.observe(document.body, { childList: true, subtree: true }); })(); } } catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); } })(); (function(){ try { var __m = "*"; var __re = new RegExp('^' + ".*" + ' [core] Fix e2e failure reporting under vitest 4 and preserve fetch error causes by VaguelySerious · Pull Request #2355 · vercel/workflow · GitHub
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[core] Fix e2e failure reporting under vitest 4 and preserve fetch error causes - #2355

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VaguelySerious merged 1 commit into
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Jun 11, 2026
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[core] Fix e2e failure reporting under vitest 4 and preserve fetch error causes#2355
VaguelySerious merged 1 commit into
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Summary

Three fixes that stop e2e failure information from being destroyed before anyone can look at it. This is groundwork for debugging the chronic E2E Vercel Prod flakes — today most of those failures surface as Error: STACK_TRACE_ERROR or a bare TypeError: fetch failed, neither of which is actionable.

1. github-reporter.ts: port to the vitest 4 reporter API

The reporter relied on the onFinished hook, which vitest 4 no longer calls. Since the vitest upgrade it has been silently dead: the e2e-failures-*.json sidecar was never written (it's listed in the CI artifact upload paths but absent from every recent artifact), and the file-linked ::error annotations were never emitted. Ported to onTestRunEnd / TestModule traversal.

2. aggregate-e2e-results.js: recover real failure messages for timeouts

vitest's JSON reporter serializes only error stacks. For test timeouts, the stack is the task-collection stack, whose first line is Error: STACK_TRACE_ERROR — the actual Test timed out in 60000ms message is dropped entirely (it appears nowhere in the JSON output). The aggregation script now falls back to the real error message from the failures sidecar (carried via error.message by the fixed reporter) when the vitest message is useless.

3. utils.ts: preserve undici fetch error causes

Network-level failures throw TypeError: fetch failed with the actual cause (ECONNRESET, ETIMEDOUT, DNS, ...) on error.cause, and no indication of which URL failed. Reporters don't serialize either. The e2e suite now wraps globalThis.fetch (test process only) and enriches the error in place:

before: TypeError: fetch failed
after: TypeError: fetch failed (POST https://workbench-…vercel.dev/api/trigger — cause: ECONNRESET)

Validation

Ran a scratch test file with all three failure modes (timeout, network failure, assertion) through the exact CI reporter invocation:

  • failures sidecar is written again with real messages (Test timed out in 1500ms.)
  • annotations carry the enriched messages
  • the step-summary script renders the real message instead of STACK_TRACE_ERROR

No published package code is touched (e2e harness + CI scripts only), hence the empty changeset.

🤖 Generated with Claude Code

The custom github-reporter relied on the onFinished reporter hook, which
vitest 4 no longer calls — so the e2e-failures sidecar was never written
and file-linked annotations were never emitted. Port it to onTestRunEnd.
Test timeouts surfaced as 'Error: STACK_TRACE_ERROR' in summaries because
vitest's JSON reporter serializes only error stacks, and for timeouts the
stack is the task-collection stack. The aggregation script now prefers the
real error message from the failures sidecar.
Network failures surfaced as bare 'TypeError: fetch failed'. The e2e suite
now enriches these in place with the request method, URL, and undici cause
code (ECONNRESET, ETIMEDOUT, ...).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
@VaguelySerious
VaguelySerious requested a review from a team as a code ownerJune 11, 2026 10:10
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Latest commit: 9ca1ae3

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📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.043s (~)1.006s (~)0.963s101.00x
💻 LocalNitro0.044s (+2.8%)1.006s (~)0.962s101.02x
💻 LocalNext.js (Turbopack)0.059s (+8.0% 🔺)1.006s (~)0.947s101.38x
🐘 PostgresExpress0.065s (-1.5%)1.014s (~)0.949s101.52x
🐘 PostgresNitro0.068s (+8.2% 🔺)1.013s (~)0.945s101.59x
🐘 PostgresNext.js (Turbopack)0.089s (+27.0% 🔺)1.030s (+1.7%)0.941s102.07x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro0.300s (+14.9% 🔺)2.088s (-14.3% 🟢)1.788s101.00x
▲ VercelNext.js (Turbopack)0.386s (+17.3% 🔺)2.406s (+2.8%)2.019s101.29x
▲ VercelExpress0.391s (+43.4% 🔺)1.911s (-29.6% 🟢)1.521s101.30x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

workflow with 1 step

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.091s (-0.5%)2.006s (~)0.916s101.00x
💻 LocalExpress1.093s (-0.7%)2.006s (~)0.913s101.00x
🐘 PostgresExpress1.112s (+1.8%)2.012s (~)0.900s101.02x
🐘 PostgresNitro1.116s (~)2.010s (~)0.894s101.02x
💻 LocalNext.js (Turbopack)1.130s (+1.9%)2.007s (~)0.877s101.04x
🐘 PostgresNext.js (Turbopack)1.132s (-0.9%)2.008s (~)0.876s101.04x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express1.588s (~)3.821s (+7.0% 🔺)2.232s101.00x
▲ VercelNitro1.650s (+5.4% 🔺)3.513s (~)1.863s101.04x
▲ VercelNext.js (Turbopack)1.808s (+8.6% 🔺)3.828s (-6.1% 🟢)2.019s101.14x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro10.487s (-0.6%)11.022s (~)0.535s31.00x
💻 LocalExpress10.521s (~)11.021s (~)0.500s31.00x
🐘 PostgresExpress10.586s (-1.2%)11.025s (-2.9%)0.439s31.01x
🐘 PostgresNitro10.594s (~)11.018s (~)0.424s31.01x
💻 LocalNext.js (Turbopack)10.767s (+1.5%)11.022s (~)0.255s31.03x
🐘 PostgresNext.js (Turbopack)10.814s (~)11.347s (+3.0%)0.533s31.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express13.367s (+1.6%)15.148s (-2.0%)1.780s21.00x
▲ VercelNitro13.812s (+3.7%)15.266s (-2.1%)1.454s21.03x
▲ VercelNext.js (Turbopack)14.204s (+5.2% 🔺)16.075s (~)1.871s21.06x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro13.716s (~)14.027s (~)0.311s51.00x
💻 LocalExpress13.720s (-1.3%)14.026s (-1.4%)0.306s51.00x
🐘 PostgresNitro13.894s (~)14.019s (~)0.125s51.01x
🐘 PostgresExpress13.979s (+1.0%)14.222s (~)0.244s51.02x
💻 LocalNext.js (Turbopack)14.314s (+2.0%)15.029s (+2.7%)0.715s41.04x
🐘 PostgresNext.js (Turbopack)14.649s (~)15.020s (~)0.370s41.07x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express21.128s (-17.1% 🟢)25.412s (-6.7% 🟢)4.284s31.00x
▲ VercelNitro21.318s (-16.5% 🟢)22.945s (-16.9% 🟢)1.627s31.01x
▲ VercelNext.js (Turbopack)21.950s (-14.0% 🟢)23.847s (-12.3% 🟢)1.897s31.04x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro12.403s (~)13.025s (~)0.622s71.00x
💻 LocalExpress12.446s (-1.2%)13.024s (~)0.577s71.00x
🐘 PostgresNitro12.541s (-1.6%)13.021s (~)0.480s71.01x
🐘 PostgresExpress12.686s (~)13.024s (-2.2%)0.337s71.02x
💻 LocalNext.js (Turbopack)13.524s (+4.4%)14.029s (+5.4% 🔺)0.505s71.09x
🐘 PostgresNext.js (Turbopack)14.272s (+3.7%)15.036s (+7.3% 🔺)0.764s61.15x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro29.237s (+0.6%)31.600s (+0.7%)2.363s31.00x
▲ VercelExpress29.351s (-8.5% 🟢)31.658s (-7.5% 🟢)2.306s31.00x
▲ VercelNext.js (Turbopack)31.628s (+6.8% 🔺)34.299s (+7.7% 🔺)2.671s31.08x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.all with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.173s (-7.1% 🟢)2.006s (~)0.833s151.00x
🐘 PostgresExpress1.194s (-0.5%)2.008s (-0.7%)0.815s151.02x
🐘 PostgresNitro1.195s (~)2.007s (~)0.812s151.02x
💻 LocalNitro1.234s (+1.8%)2.005s (~)0.771s151.05x
💻 LocalNext.js (Turbopack)1.301s (+6.3% 🔺)2.006s (~)0.705s151.11x
🐘 PostgresNext.js (Turbopack)1.320s (+5.5% 🔺)2.039s (+1.6%)0.719s151.13x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express2.504s (-9.5% 🟢)4.094s (-13.3% 🟢)1.590s81.00x
▲ VercelNitro2.517s (-9.1% 🟢)3.950s (-9.0% 🟢)1.433s81.00x
▲ VercelNext.js (Turbopack)2.789s (+3.8%)4.662s (+10.5% 🔺)1.873s71.11x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.252s (-0.6%)2.007s (~)0.755s151.00x
🐘 PostgresExpress1.319s (-0.6%)2.076s (+3.0%)0.757s151.05x
💻 LocalExpress1.622s (-13.8% 🟢)2.006s (-9.7% 🟢)0.384s151.30x
🐘 PostgresNext.js (Turbopack)1.649s (+17.0% 🔺)2.181s (+8.6% 🔺)0.532s141.32x
💻 LocalNitro1.727s (+1.3%)2.006s (-3.2%)0.278s151.38x
💻 LocalNext.js (Turbopack)1.770s (+2.5%)2.073s (+3.3%)0.303s151.41x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express3.485s (-14.7% 🟢)5.780s (-6.3% 🟢)2.295s61.00x
▲ VercelNitro3.504s (-13.9% 🟢)5.276s (-15.0% 🟢)1.773s61.01x
▲ VercelNext.js (Turbopack)3.912s (-4.7%)5.887s (-4.1%)1.975s61.12x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.394s (-0.9%)2.007s (~)0.613s151.00x
🐘 PostgresExpress1.436s (+3.0%)2.008s (~)0.571s151.03x
🐘 PostgresNext.js (Turbopack)1.782s (+1.3%)2.314s (+0.8%)0.532s131.28x
💻 LocalExpress3.990s (-24.7% 🟢)4.440s (-26.2% 🟢)0.450s72.86x
💻 LocalNitro4.648s (-1.5%)5.178s (+3.3%)0.530s63.33x
💻 LocalNext.js (Turbopack)4.694s (+6.8% 🔺)5.179s (+3.4%)0.485s63.37x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Next.js (Turbopack)5.879s (~)8.089s (+4.0%)2.210s41.00x
▲ VercelNitro6.034s (-10.4% 🟢)7.827s (-10.1% 🟢)1.794s41.03x
▲ VercelExpress7.226s (+22.4% 🔺)9.576s (+21.3% 🔺)2.351s41.23x

🔍 Observability: Next.js (Turbopack) | Nitro | Express

Promise.race with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.185s (-1.5%)2.012s (~)0.827s151.00x
🐘 PostgresNitro1.186s (-1.2%)2.009s (~)0.824s151.00x
💻 LocalNext.js (Turbopack)1.352s (+3.6%)2.006s (~)0.654s151.14x
🐘 PostgresNext.js (Turbopack)1.398s (+10.4% 🔺)2.176s (+8.3% 🔺)0.778s141.18x
💻 LocalExpress1.486s (-10.3% 🟢)2.006s (-3.3%)0.520s151.25x
💻 LocalNitro1.554s (+0.7%)2.007s (~)0.452s151.31x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.431s (-9.0% 🟢)3.819s (-11.9% 🟢)1.388s81.00x
▲ VercelNext.js (Turbopack)2.726s (-37.7% 🟢)4.406s (-30.0% 🟢)1.680s71.12x
▲ VercelExpress2.760s (+7.5% 🔺)4.377s (+4.2%)1.616s71.14x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

Promise.race with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.254s (-1.6%)2.008s (~)0.754s151.00x
🐘 PostgresExpress1.270s (+2.2%)2.008s (~)0.738s151.01x
🐘 PostgresNext.js (Turbopack)1.469s (+5.2% 🔺)2.152s (+7.2% 🔺)0.683s141.17x
💻 LocalExpress1.793s (-15.6% 🟢)2.149s (-17.1% 🟢)0.355s141.43x
💻 LocalNext.js (Turbopack)2.067s (+2.3%)2.735s (+9.1% 🔺)0.668s111.65x
💻 LocalNitro2.130s (+21.2% 🔺)2.508s (+21.0% 🔺)0.379s121.70x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express3.577s (-2.7%)5.258s (-6.3% 🟢)1.681s61.00x
▲ VercelNitro3.830s (-6.5% 🟢)5.397s (-10.1% 🟢)1.567s61.07x
▲ VercelNext.js (Turbopack)3.947s (-12.7% 🟢)5.691s (-7.7% 🟢)1.744s61.10x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.392s (-4.8%)2.007s (~)0.615s151.00x
🐘 PostgresExpress1.410s (-6.0% 🟢)2.007s (-16.3% 🟢)0.598s151.01x
🐘 PostgresNext.js (Turbopack)1.951s (+17.8% 🔺)2.504s (+20.7% 🔺)0.552s131.40x
💻 LocalExpress4.581s (-21.9% 🟢)5.179s (-16.6% 🟢)0.598s63.29x
💻 LocalNext.js (Turbopack)5.452s (+5.6% 🔺)6.015s (~)0.562s53.92x
💻 LocalNitro5.717s (+20.5% 🔺)6.014s (+12.5% 🔺)0.297s54.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.513s (+11.8% 🔺)7.127s (+5.8% 🔺)1.614s51.00x
▲ VercelNext.js (Turbopack)5.755s (-0.6%)7.799s (+2.9%)2.044s41.04x
▲ VercelExpress7.013s (+38.2% 🔺)9.063s (+36.7% 🔺)2.050s41.27x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro0.566s (-7.1% 🟢)1.006s (~)0.441s601.00x
💻 LocalExpress0.583s (-11.1% 🟢)1.005s (-3.4%)0.421s601.03x
💻 LocalNitro0.587s (-27.0% 🟢)1.005s (-16.6% 🟢)0.418s601.04x
🐘 PostgresExpress0.610s (-8.6% 🟢)1.024s (-2.3%)0.414s591.08x
💻 LocalNext.js (Turbopack)0.857s (+23.1% 🔺)1.039s (+3.5%)0.182s581.52x
🐘 PostgresNext.js (Turbopack)0.941s (+15.9% 🔺)1.377s (+36.8% 🔺)0.436s451.66x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express5.939s (+8.0% 🔺)7.671s (+7.9% 🔺)1.733s81.00x
▲ VercelNitro6.056s (-18.8% 🟢)7.518s (-21.0% 🟢)1.462s81.02x
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Express | Nitro

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.394s (-1.6%)2.030s (+1.1%)0.636s451.00x
🐘 PostgresExpress1.435s (-6.6% 🟢)2.053s (-4.6%)0.618s441.03x
💻 LocalExpress1.477s (-7.2% 🟢)2.005s (-1.2%)0.528s451.06x
💻 LocalNitro1.489s (+1.7%)2.006s (~)0.517s451.07x
💻 LocalNext.js (Turbopack)2.089s (+20.8% 🔺)2.911s (+43.6% 🔺)0.823s311.50x
🐘 PostgresNext.js (Turbopack)2.145s (+10.4% 🔺)2.574s (+18.4% 🔺)0.429s361.54x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express14.723s (-10.1% 🟢)16.752s (-8.5% 🟢)2.029s61.00x
▲ VercelNitro14.762s (+11.7% 🔺)16.203s (+4.7%)1.441s61.00x
▲ VercelNext.js (Turbopack)15.199s (+2.9%)17.372s (+2.6%)2.173s61.03x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro2.774s (-4.8%)3.167s (-3.5%)0.393s381.00x
🐘 PostgresExpress2.779s (-4.6%)3.137s (-11.4% 🟢)0.359s391.00x
💻 LocalExpress3.137s (-8.3% 🟢)3.977s (-0.8%)0.840s311.13x
💻 LocalNitro3.348s (+4.4%)4.009s (~)0.661s301.21x
💻 LocalNext.js (Turbopack)4.238s (+13.7% 🔺)5.010s (+21.9% 🔺)0.773s241.53x
🐘 PostgresNext.js (Turbopack)4.304s (+11.5% 🔺)4.755s (+16.6% 🔺)0.451s261.55x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express30.799s (+6.8% 🔺)33.461s (+8.3% 🔺)2.661s41.00x
▲ VercelNitro31.020s (+4.2%)33.344s (+4.3%)2.324s41.01x
▲ VercelNext.js (Turbopack)31.973s (+18.5% 🔺)34.694s (+18.5% 🔺)2.721s41.04x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express0.221s (-12.2% 🟢)1.006s (~)0.785s601.00x
🐘 PostgresNitro0.225s (-4.5%)1.007s (~)0.782s601.02x
🐘 PostgresNext.js (Turbopack)0.289s (+2.5%)1.010s (~)0.721s601.31x
💻 LocalExpress0.414s (-11.0% 🟢)1.004s (~)0.590s601.87x
💻 LocalNitro0.418s (-1.6%)1.004s (~)0.587s601.89x
💻 LocalNext.js (Turbopack)0.588s (-3.7%)1.022s (-1.6%)0.434s592.66x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express2.424s (+9.6% 🔺)4.113s (~)1.689s151.00x
▲ VercelNitro2.586s (+10.3% 🔺)4.067s (-6.2% 🟢)1.480s151.07x
▲ VercelNext.js (Turbopack)2.760s (+25.5% 🔺)4.441s (+5.2% 🔺)1.681s141.14x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro0.345s (-6.9% 🟢)1.006s (~)0.661s901.00x
🐘 PostgresExpress0.364s (+7.4% 🔺)1.007s (~)0.643s901.05x
🐘 PostgresNext.js (Turbopack)0.612s (+26.9% 🔺)1.141s (+13.4% 🔺)0.528s791.77x
💻 LocalExpress2.041s (-6.8% 🟢)2.564s (-9.2% 🟢)0.522s365.91x
💻 LocalNitro2.142s (+3.8%)2.736s (+3.7%)0.594s336.20x
💻 LocalNext.js (Turbopack)2.281s (-6.9% 🟢)2.947s (-5.2% 🟢)0.665s316.61x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.706s (-87.0% 🟢)7.294s (-84.1% 🟢)1.588s131.00x
▲ VercelExpress5.789s (-86.6% 🟢)7.521s (-83.4% 🟢)1.732s121.01x
▲ VercelNext.js (Turbopack)6.444s (+2.8%)8.035s (-5.4% 🟢)1.592s121.13x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro0.683s (-3.4%)1.007s (~)0.324s1201.00x
🐘 PostgresExpress0.698s (+11.6% 🔺)1.007s (-4.6%)0.308s1201.02x
🐘 PostgresNext.js (Turbopack)1.251s (+27.7% 🔺)1.804s (+12.2% 🔺)0.553s681.83x
💻 LocalExpress8.852s (-14.2% 🟢)9.331s (-14.1% 🟢)0.479s1312.96x
💻 LocalNitro9.747s (+11.9% 🔺)10.277s (+10.1% 🔺)0.530s1214.27x
💻 LocalNext.js (Turbopack)10.651s (+3.3%)11.301s (~)0.650s1115.59x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express15.038s (-1.4%)17.353s (-0.8%)2.315s71.00x
▲ VercelNitro16.319s (-94.8% 🟢)18.256s (-94.2% 🟢)1.937s71.09x
▲ VercelNext.js (Turbopack)18.104s (-88.7% 🟢)20.071s (-87.6% 🟢)1.967s61.20x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Stream Benchmarks(includes TTFB metrics)
workflow with stream

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.151s (-1.5%)2.005s (~)0.010s (-25.0% 🟢)2.016s (~)0.866s101.00x
💻 LocalNitro1.159s (+0.7%)2.005s (~)0.010s (+4.0%)2.018s (~)0.859s101.01x
🐘 PostgresExpress1.172s (-1.8%)1.999s (~)0.001s (-96.8% 🟢)2.010s (-1.6%)0.838s101.02x
🐘 PostgresNitro1.180s (~)1.996s (~)0.001s (-14.3% 🟢)2.010s (~)0.831s101.03x
💻 LocalNext.js (Turbopack)1.201s (+2.8%)2.004s (~)0.010s (+3.0%)2.018s (~)0.817s101.04x
🐘 PostgresNext.js (Turbopack)1.368s (+10.8% 🔺)1.990s (-0.6%)0.055s (+3580.0% 🔺)2.082s (+3.5%)0.715s101.19x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.307s (+6.6% 🔺)3.590s (+5.1% 🔺)1.139s (+120.8% 🔺)5.133s (+14.9% 🔺)2.826s101.00x
▲ VercelNext.js (Turbopack)2.428s (+8.3% 🔺)3.703s (+4.3%)0.831s (-93.3% 🟢)5.003s (-69.7% 🟢)2.576s101.05x
▲ VercelExpress2.466s (+15.0% 🔺)3.846s (+12.8% 🔺)0.713s (+35.6% 🔺)5.057s (+13.7% 🔺)2.591s101.07x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

stream pipeline with 5 transform steps (1MB)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.548s (-5.4% 🟢)2.008s (~)0.012s (+5.7% 🔺)2.022s (~)0.474s301.00x
💻 LocalNitro1.573s (-9.7% 🟢)2.010s (~)0.013s (+38.7% 🔺)2.025s (-7.9% 🟢)0.451s301.02x
🐘 PostgresNitro1.617s (-2.8%)2.002s (~)0.005s (+29.1% 🔺)2.028s (~)0.411s301.04x
🐘 PostgresExpress1.626s (-6.4% 🟢)2.008s (-6.3% 🟢)0.005s (+64.3% 🔺)2.028s (-6.1% 🟢)0.402s301.05x
💻 LocalNext.js (Turbopack)1.715s (+4.6%)2.009s (~)0.011s (+12.9% 🔺)2.024s (~)0.308s301.11x
🐘 PostgresNext.js (Turbopack)2.571s (+45.8% 🔺)3.165s (+57.3% 🔺)0.004s (+4.4%)3.199s (+57.8% 🔺)0.628s191.66x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express6.232s (+8.2% 🔺)7.789s (+4.8%)0.300s (-15.3% 🟢)8.701s (+3.5%)2.470s71.00x
▲ VercelNitro6.288s (+9.4% 🔺)7.594s (~)0.222s (-34.4% 🟢)8.204s (-3.3%)1.915s81.01x
▲ VercelNext.js (Turbopack)7.670s (+20.4% 🔺)9.265s (+16.7% 🔺)0.184s (-49.0% 🟢)9.896s (+11.6% 🔺)2.226s81.23x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express0.721s (-26.2% 🟢)1.050s (-26.4% 🟢)0.000s (-75.4% 🟢)1.060s (-26.8% 🟢)0.339s571.00x
🐘 PostgresNitro0.733s (+1.5%)1.049s (+1.7%)0.000s (-66.1% 🟢)1.066s (+1.7%)0.332s571.02x
🐘 PostgresNext.js (Turbopack)1.323s (+58.9% 🔺)1.765s (+64.7% 🔺)0.000s (-100.0% 🟢)1.783s (+65.1% 🔺)0.460s341.84x
💻 LocalExpress1.347s (-9.2% 🟢)2.012s (~)0.000s (-40.0% 🟢)2.014s (~)0.668s301.87x
💻 LocalNitro1.419s (+4.9%)2.014s (~)0.000s (-60.0% 🟢)2.016s (~)0.596s301.97x
💻 LocalNext.js (Turbopack)1.484s (+2.5%)2.013s (~)0.000s (+12.5% 🔺)2.016s (~)0.532s302.06x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.169s (-12.0% 🟢)4.203s (-17.1% 🟢)0.000s (NaN%)4.575s (-18.7% 🟢)1.406s141.00x
▲ VercelNext.js (Turbopack)3.532s (+6.8% 🔺)4.818s (-1.6%)0.000s (NaN%)5.312s (-2.7%)1.780s121.11x
▲ VercelExpress3.592s (-11.5% 🟢)5.050s (-5.4% 🟢)0.000s (-100.0% 🟢)5.510s (-10.7% 🟢)1.917s111.13x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

fan-out fan-in 10 streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.505s (+6.7% 🔺)2.144s (+7.4% 🔺)0.000s (+Infinity% 🔺)2.187s (+8.7% 🔺)0.682s281.00x
🐘 PostgresExpress1.535s (-4.9%)2.254s (~)0.000s (NaN%)2.271s (~)0.736s271.02x
🐘 PostgresNext.js (Turbopack)2.514s (+45.5% 🔺)3.050s (+34.9% 🔺)0.000s (+Infinity% 🔺)3.065s (+35.1% 🔺)0.551s201.67x
💻 LocalNext.js (Turbopack)2.696s (-16.1% 🟢)3.340s (-14.3% 🟢)0.000s (-32.6% 🟢)3.343s (-14.3% 🟢)0.647s191.79x
💻 LocalExpress3.046s (-8.6% 🟢)3.836s (~)0.000s (-50.0% 🟢)3.839s (~)0.793s162.02x
💻 LocalNitro3.178s (+2.0%)4.028s (+3.4%)0.000s (+33.3% 🔺)4.031s (+3.3%)0.853s152.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.016s (-28.8% 🟢)6.393s (-25.4% 🟢)0.001s (+Infinity% 🔺)6.778s (-25.4% 🟢)1.762s91.00x
▲ VercelExpress5.111s (-19.1% 🟢)6.465s (-15.2% 🟢)0.000s (-70.4% 🟢)7.031s (-14.1% 🟢)1.920s91.02x
▲ VercelNext.js (Turbopack)5.804s (+12.3% 🔺)7.314s (+9.5% 🔺)0.000s (-100.0% 🟢)7.878s (+9.4% 🔺)2.074s81.16x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World🥇 Fastest FrameworkWins
💻 LocalExpress15/21
🐘 PostgresNitro13/21
▲ VercelExpress12/21
Fastest World by Framework

Winner determined by most benchmark wins

Framework🥇 Fastest WorldWins
Express🐘 Postgres12/21
Next.js (Turbopack)💻 Local12/21
Nitro🐘 Postgres14/21
Column Definitions
  • Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
  • TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
  • Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
  • Wall Time: Total testbench time (trigger workflow + poll for result)
  • Overhead: Testbench overhead (Wall Time - Workflow Time)
  • Samples: Number of benchmark iterations run
  • vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

  • 💻 Local: In-memory filesystem world (local development)
  • 🐘 Postgres: PostgreSQL database world (local development)
  • ▲ Vercel: Vercel production/preview deployment
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Redis + BullMQ: Community world (local development)
  • 🌐 Cloudflare: Community world (local development)
  • 🌐 MySQL: Community world (local development)
  • 🌐 Azure: Community world (local development)
  • 🌐 NATS JetStream: Community world (local development)
  • 🌐 Upstash: Community world (local development)

📋 View full workflow run

@github-actions

github-actionsBot commented Jun 11, 2026

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🧪 E2E Test Results

All tests passed

Summary

PassedFailedSkippedTotal
✅ ▲ Vercel Production126602191485
✅ 💻 Local Development167102191890
✅ 📦 Local Production167102191890
✅ 🐘 Local Postgres167102191890
✅ 🪟 Windows13500135
✅ 📋 Other7690176945
Total7183010528235

Details by Category

✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro109026
✅ example109026
✅ express109026
✅ fastify109026
✅ hono109026
✅ nextjs-turbopack13302
✅ nextjs-webpack13302
✅ nitro109026
✅ nuxt109026
✅ sveltekit12807
✅ vite109026
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable110025
✅ express-stable110025
✅ fastify-stable110025
✅ hono-stable110025
✅ nextjs-turbopack-canary116019
✅ nextjs-turbopack-stable-lazy-discovery-disabled13500
✅ nextjs-turbopack-stable-lazy-discovery-enabled13500
✅ nextjs-webpack-canary116019
✅ nextjs-webpack-stable-lazy-discovery-disabled13500
✅ nextjs-webpack-stable-lazy-discovery-enabled13500
✅ nitro-stable110025
✅ nuxt-stable110025
✅ sveltekit-stable12906
✅ vite-stable110025
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable110025
✅ express-stable110025
✅ fastify-stable110025
✅ hono-stable110025
✅ nextjs-turbopack-canary116019
✅ nextjs-turbopack-stable-lazy-discovery-disabled13500
✅ nextjs-turbopack-stable-lazy-discovery-enabled13500
✅ nextjs-webpack-canary116019
✅ nextjs-webpack-stable-lazy-discovery-disabled13500
✅ nextjs-webpack-stable-lazy-discovery-enabled13500
✅ nitro-stable110025
✅ nuxt-stable110025
✅ sveltekit-stable12906
✅ vite-stable110025
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable110025
✅ express-stable110025
✅ fastify-stable110025
✅ hono-stable110025
✅ nextjs-turbopack-canary116019
✅ nextjs-turbopack-stable-lazy-discovery-disabled13500
✅ nextjs-turbopack-stable-lazy-discovery-enabled13500
✅ nextjs-webpack-canary116019
✅ nextjs-webpack-stable-lazy-discovery-disabled13500
✅ nextjs-webpack-stable-lazy-discovery-enabled13500
✅ nitro-stable110025
✅ nuxt-stable110025
✅ sveltekit-stable12906
✅ vite-stable110025
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack13500
✅ 📋 Other
AppPassedFailedSkipped
✅ e2e-local-dev-nest-stable110025
✅ e2e-local-dev-tanstack-start-110025
✅ e2e-local-postgres-nest-stable110025
✅ e2e-local-postgres-tanstack-start-110025
✅ e2e-local-prod-nest-stable110025
✅ e2e-local-prod-tanstack-start-110025
✅ e2e-vercel-prod-tanstack-start109026

📋 View full workflow run

@VaguelySerious
VaguelySerious merged commit 4e8a965 into mainJun 11, 2026
188 of 191 checks passed
@VaguelySerious
VaguelySerious deleted the peter/e2e-failure-diagnostics branch June 11, 2026 10:36
github-actionsBot added a commit that referenced this pull request Jun 11, 2026
…ses (#2355)
Signed-off-by: Peter Wielander <mittgfu@gmail.com>
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Backport PR opened against stable: #2357. (backport job run)

pranaygp added a commit that referenced this pull request Jun 11, 2026
…hook-ready
* origin-https/main: (119 commits)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
Prevent local tests from hanging (#2338)
feat(core): add optional namespace for queue topic prefix (#2305)
[web-shared] Show precise durations in the new trace viewer (#2335)
Validate unique workflow step IDs at build time (#2018)
Move run attributes into their own detail card (#2327)
[core] Forward-port stream reconnect to getReadable level (#2318)
[docs] Add "Step executed multiple times" error page (#2310)
Fix flickering on the detail panel when navigating the trace viewer (#2325)
Version Packages (beta) (#2254)
Patch vulnerable package dependencies (#2301)
Deprecate DurableAgent and update it with WorkflowAgent in v5 docs (#2285)
[codex] Fix partial world-local exclusive writes (#2296)
...
# Conflicts:
#	packages/core/src/runtime.ts
#	packages/core/src/runtime/suspension-handler.ts
pranaygp added a commit that referenced this pull request Jun 11, 2026
…t-race-eager-wait
* origin/main:
docs(observability): remove MVP implementation detail bullet (#2367)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
pranaygp added a commit that referenced this pull request Jun 11, 2026
…docs-run-idempotency
* origin-https/main: (115 commits)
[core] V2: unify wait+step queue dispatch in suspension processing (#1925)
fix(world-local,world-postgres): make duplicate hook_created idempotent (#2295)
docs(observability): remove MVP implementation detail bullet (#2367)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
Prevent local tests from hanging (#2338)
feat(core): add optional namespace for queue topic prefix (#2305)
[web-shared] Show precise durations in the new trace viewer (#2335)
Validate unique workflow step IDs at build time (#2018)
Move run attributes into their own detail card (#2327)
[core] Forward-port stream reconnect to getReadable level (#2318)
[docs] Add "Step executed multiple times" error page (#2310)
Fix flickering on the detail panel when navigating the trace viewer (#2325)
Version Packages (beta) (#2254)
...
# Conflicts:
#	docs/content/docs/v4/cookbook/advanced/child-workflows.mdx
#	docs/content/docs/v5/cookbook/advanced/child-workflows.mdx
#	docs/content/docs/v5/cookbook/agent-patterns/durable-agent.mdx
pranaygp added a commit that referenced this pull request Jun 11, 2026
* origin/main:
[core] V2: unify wait+step queue dispatch in suspension processing (#1925)
fix(world-local,world-postgres): make duplicate hook_created idempotent (#2295)
docs(observability): remove MVP implementation detail bullet (#2367)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
Prevent local tests from hanging (#2338)
feat(core): add optional namespace for queue topic prefix (#2305)
[web-shared] Show precise durations in the new trace viewer (#2335)
Validate unique workflow step IDs at build time (#2018)
Move run attributes into their own detail card (#2327)
[core] Forward-port stream reconnect to getReadable level (#2318)
[docs] Add "Step executed multiple times" error page (#2310)
Fix flickering on the detail panel when navigating the trace viewer (#2325)
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[core] Fix e2e failure reporting under vitest 4 and preserve fetch error causes - #2355

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Jun 11, 2026
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[core] Fix e2e failure reporting under vitest 4 and preserve fetch error causes#2355
VaguelySerious merged 1 commit into
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Summary

Three fixes that stop e2e failure information from being destroyed before anyone can look at it. This is groundwork for debugging the chronic E2E Vercel Prod flakes — today most of those failures surface as Error: STACK_TRACE_ERROR or a bare TypeError: fetch failed, neither of which is actionable.

1. github-reporter.ts: port to the vitest 4 reporter API

The reporter relied on the onFinished hook, which vitest 4 no longer calls. Since the vitest upgrade it has been silently dead: the e2e-failures-*.json sidecar was never written (it's listed in the CI artifact upload paths but absent from every recent artifact), and the file-linked ::error annotations were never emitted. Ported to onTestRunEnd / TestModule traversal.

2. aggregate-e2e-results.js: recover real failure messages for timeouts

vitest's JSON reporter serializes only error stacks. For test timeouts, the stack is the task-collection stack, whose first line is Error: STACK_TRACE_ERROR — the actual Test timed out in 60000ms message is dropped entirely (it appears nowhere in the JSON output). The aggregation script now falls back to the real error message from the failures sidecar (carried via error.message by the fixed reporter) when the vitest message is useless.

3. utils.ts: preserve undici fetch error causes

Network-level failures throw TypeError: fetch failed with the actual cause (ECONNRESET, ETIMEDOUT, DNS, ...) on error.cause, and no indication of which URL failed. Reporters don't serialize either. The e2e suite now wraps globalThis.fetch (test process only) and enriches the error in place:

before: TypeError: fetch failed
after: TypeError: fetch failed (POST https://workbench-…vercel.dev/api/trigger — cause: ECONNRESET)

Validation

Ran a scratch test file with all three failure modes (timeout, network failure, assertion) through the exact CI reporter invocation:

  • failures sidecar is written again with real messages (Test timed out in 1500ms.)
  • annotations carry the enriched messages
  • the step-summary script renders the real message instead of STACK_TRACE_ERROR

No published package code is touched (e2e harness + CI scripts only), hence the empty changeset.

🤖 Generated with Claude Code

The custom github-reporter relied on the onFinished reporter hook, which
vitest 4 no longer calls — so the e2e-failures sidecar was never written
and file-linked annotations were never emitted. Port it to onTestRunEnd.
Test timeouts surfaced as 'Error: STACK_TRACE_ERROR' in summaries because
vitest's JSON reporter serializes only error stacks, and for timeouts the
stack is the task-collection stack. The aggregation script now prefers the
real error message from the failures sidecar.
Network failures surfaced as bare 'TypeError: fetch failed'. The e2e suite
now enriches these in place with the request method, URL, and undici cause
code (ECONNRESET, ETIMEDOUT, ...).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
@VaguelySerious
VaguelySerious requested a review from a team as a code ownerJune 11, 2026 10:10
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Latest commit: 9ca1ae3

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📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.043s (~)1.006s (~)0.963s101.00x
💻 LocalNitro0.044s (+2.8%)1.006s (~)0.962s101.02x
💻 LocalNext.js (Turbopack)0.059s (+8.0% 🔺)1.006s (~)0.947s101.38x
🐘 PostgresExpress0.065s (-1.5%)1.014s (~)0.949s101.52x
🐘 PostgresNitro0.068s (+8.2% 🔺)1.013s (~)0.945s101.59x
🐘 PostgresNext.js (Turbopack)0.089s (+27.0% 🔺)1.030s (+1.7%)0.941s102.07x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro0.300s (+14.9% 🔺)2.088s (-14.3% 🟢)1.788s101.00x
▲ VercelNext.js (Turbopack)0.386s (+17.3% 🔺)2.406s (+2.8%)2.019s101.29x
▲ VercelExpress0.391s (+43.4% 🔺)1.911s (-29.6% 🟢)1.521s101.30x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

workflow with 1 step

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro1.091s (-0.5%)2.006s (~)0.916s101.00x
💻 LocalExpress1.093s (-0.7%)2.006s (~)0.913s101.00x
🐘 PostgresExpress1.112s (+1.8%)2.012s (~)0.900s101.02x
🐘 PostgresNitro1.116s (~)2.010s (~)0.894s101.02x
💻 LocalNext.js (Turbopack)1.130s (+1.9%)2.007s (~)0.877s101.04x
🐘 PostgresNext.js (Turbopack)1.132s (-0.9%)2.008s (~)0.876s101.04x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express1.588s (~)3.821s (+7.0% 🔺)2.232s101.00x
▲ VercelNitro1.650s (+5.4% 🔺)3.513s (~)1.863s101.04x
▲ VercelNext.js (Turbopack)1.808s (+8.6% 🔺)3.828s (-6.1% 🟢)2.019s101.14x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro10.487s (-0.6%)11.022s (~)0.535s31.00x
💻 LocalExpress10.521s (~)11.021s (~)0.500s31.00x
🐘 PostgresExpress10.586s (-1.2%)11.025s (-2.9%)0.439s31.01x
🐘 PostgresNitro10.594s (~)11.018s (~)0.424s31.01x
💻 LocalNext.js (Turbopack)10.767s (+1.5%)11.022s (~)0.255s31.03x
🐘 PostgresNext.js (Turbopack)10.814s (~)11.347s (+3.0%)0.533s31.03x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express13.367s (+1.6%)15.148s (-2.0%)1.780s21.00x
▲ VercelNitro13.812s (+3.7%)15.266s (-2.1%)1.454s21.03x
▲ VercelNext.js (Turbopack)14.204s (+5.2% 🔺)16.075s (~)1.871s21.06x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro13.716s (~)14.027s (~)0.311s51.00x
💻 LocalExpress13.720s (-1.3%)14.026s (-1.4%)0.306s51.00x
🐘 PostgresNitro13.894s (~)14.019s (~)0.125s51.01x
🐘 PostgresExpress13.979s (+1.0%)14.222s (~)0.244s51.02x
💻 LocalNext.js (Turbopack)14.314s (+2.0%)15.029s (+2.7%)0.715s41.04x
🐘 PostgresNext.js (Turbopack)14.649s (~)15.020s (~)0.370s41.07x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express21.128s (-17.1% 🟢)25.412s (-6.7% 🟢)4.284s31.00x
▲ VercelNitro21.318s (-16.5% 🟢)22.945s (-16.9% 🟢)1.627s31.01x
▲ VercelNext.js (Turbopack)21.950s (-14.0% 🟢)23.847s (-12.3% 🟢)1.897s31.04x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Nitro12.403s (~)13.025s (~)0.622s71.00x
💻 LocalExpress12.446s (-1.2%)13.024s (~)0.577s71.00x
🐘 PostgresNitro12.541s (-1.6%)13.021s (~)0.480s71.01x
🐘 PostgresExpress12.686s (~)13.024s (-2.2%)0.337s71.02x
💻 LocalNext.js (Turbopack)13.524s (+4.4%)14.029s (+5.4% 🔺)0.505s71.09x
🐘 PostgresNext.js (Turbopack)14.272s (+3.7%)15.036s (+7.3% 🔺)0.764s61.15x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro29.237s (+0.6%)31.600s (+0.7%)2.363s31.00x
▲ VercelExpress29.351s (-8.5% 🟢)31.658s (-7.5% 🟢)2.306s31.00x
▲ VercelNext.js (Turbopack)31.628s (+6.8% 🔺)34.299s (+7.7% 🔺)2.671s31.08x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Promise.all with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.173s (-7.1% 🟢)2.006s (~)0.833s151.00x
🐘 PostgresExpress1.194s (-0.5%)2.008s (-0.7%)0.815s151.02x
🐘 PostgresNitro1.195s (~)2.007s (~)0.812s151.02x
💻 LocalNitro1.234s (+1.8%)2.005s (~)0.771s151.05x
💻 LocalNext.js (Turbopack)1.301s (+6.3% 🔺)2.006s (~)0.705s151.11x
🐘 PostgresNext.js (Turbopack)1.320s (+5.5% 🔺)2.039s (+1.6%)0.719s151.13x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express2.504s (-9.5% 🟢)4.094s (-13.3% 🟢)1.590s81.00x
▲ VercelNitro2.517s (-9.1% 🟢)3.950s (-9.0% 🟢)1.433s81.00x
▲ VercelNext.js (Turbopack)2.789s (+3.8%)4.662s (+10.5% 🔺)1.873s71.11x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.252s (-0.6%)2.007s (~)0.755s151.00x
🐘 PostgresExpress1.319s (-0.6%)2.076s (+3.0%)0.757s151.05x
💻 LocalExpress1.622s (-13.8% 🟢)2.006s (-9.7% 🟢)0.384s151.30x
🐘 PostgresNext.js (Turbopack)1.649s (+17.0% 🔺)2.181s (+8.6% 🔺)0.532s141.32x
💻 LocalNitro1.727s (+1.3%)2.006s (-3.2%)0.278s151.38x
💻 LocalNext.js (Turbopack)1.770s (+2.5%)2.073s (+3.3%)0.303s151.41x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express3.485s (-14.7% 🟢)5.780s (-6.3% 🟢)2.295s61.00x
▲ VercelNitro3.504s (-13.9% 🟢)5.276s (-15.0% 🟢)1.773s61.01x
▲ VercelNext.js (Turbopack)3.912s (-4.7%)5.887s (-4.1%)1.975s61.12x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.394s (-0.9%)2.007s (~)0.613s151.00x
🐘 PostgresExpress1.436s (+3.0%)2.008s (~)0.571s151.03x
🐘 PostgresNext.js (Turbopack)1.782s (+1.3%)2.314s (+0.8%)0.532s131.28x
💻 LocalExpress3.990s (-24.7% 🟢)4.440s (-26.2% 🟢)0.450s72.86x
💻 LocalNitro4.648s (-1.5%)5.178s (+3.3%)0.530s63.33x
💻 LocalNext.js (Turbopack)4.694s (+6.8% 🔺)5.179s (+3.4%)0.485s63.37x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Next.js (Turbopack)5.879s (~)8.089s (+4.0%)2.210s41.00x
▲ VercelNitro6.034s (-10.4% 🟢)7.827s (-10.1% 🟢)1.794s41.03x
▲ VercelExpress7.226s (+22.4% 🔺)9.576s (+21.3% 🔺)2.351s41.23x

🔍 Observability: Next.js (Turbopack) | Nitro | Express

Promise.race with 10 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express1.185s (-1.5%)2.012s (~)0.827s151.00x
🐘 PostgresNitro1.186s (-1.2%)2.009s (~)0.824s151.00x
💻 LocalNext.js (Turbopack)1.352s (+3.6%)2.006s (~)0.654s151.14x
🐘 PostgresNext.js (Turbopack)1.398s (+10.4% 🔺)2.176s (+8.3% 🔺)0.778s141.18x
💻 LocalExpress1.486s (-10.3% 🟢)2.006s (-3.3%)0.520s151.25x
💻 LocalNitro1.554s (+0.7%)2.007s (~)0.452s151.31x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.431s (-9.0% 🟢)3.819s (-11.9% 🟢)1.388s81.00x
▲ VercelNext.js (Turbopack)2.726s (-37.7% 🟢)4.406s (-30.0% 🟢)1.680s71.12x
▲ VercelExpress2.760s (+7.5% 🔺)4.377s (+4.2%)1.616s71.14x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

Promise.race with 25 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.254s (-1.6%)2.008s (~)0.754s151.00x
🐘 PostgresExpress1.270s (+2.2%)2.008s (~)0.738s151.01x
🐘 PostgresNext.js (Turbopack)1.469s (+5.2% 🔺)2.152s (+7.2% 🔺)0.683s141.17x
💻 LocalExpress1.793s (-15.6% 🟢)2.149s (-17.1% 🟢)0.355s141.43x
💻 LocalNext.js (Turbopack)2.067s (+2.3%)2.735s (+9.1% 🔺)0.668s111.65x
💻 LocalNitro2.130s (+21.2% 🔺)2.508s (+21.0% 🔺)0.379s121.70x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express3.577s (-2.7%)5.258s (-6.3% 🟢)1.681s61.00x
▲ VercelNitro3.830s (-6.5% 🟢)5.397s (-10.1% 🟢)1.567s61.07x
▲ VercelNext.js (Turbopack)3.947s (-12.7% 🟢)5.691s (-7.7% 🟢)1.744s61.10x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Promise.race with 50 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.392s (-4.8%)2.007s (~)0.615s151.00x
🐘 PostgresExpress1.410s (-6.0% 🟢)2.007s (-16.3% 🟢)0.598s151.01x
🐘 PostgresNext.js (Turbopack)1.951s (+17.8% 🔺)2.504s (+20.7% 🔺)0.552s131.40x
💻 LocalExpress4.581s (-21.9% 🟢)5.179s (-16.6% 🟢)0.598s63.29x
💻 LocalNext.js (Turbopack)5.452s (+5.6% 🔺)6.015s (~)0.562s53.92x
💻 LocalNitro5.717s (+20.5% 🔺)6.014s (+12.5% 🔺)0.297s54.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.513s (+11.8% 🔺)7.127s (+5.8% 🔺)1.614s51.00x
▲ VercelNext.js (Turbopack)5.755s (-0.6%)7.799s (+2.9%)2.044s41.04x
▲ VercelExpress7.013s (+38.2% 🔺)9.063s (+36.7% 🔺)2.050s41.27x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro0.566s (-7.1% 🟢)1.006s (~)0.441s601.00x
💻 LocalExpress0.583s (-11.1% 🟢)1.005s (-3.4%)0.421s601.03x
💻 LocalNitro0.587s (-27.0% 🟢)1.005s (-16.6% 🟢)0.418s601.04x
🐘 PostgresExpress0.610s (-8.6% 🟢)1.024s (-2.3%)0.414s591.08x
💻 LocalNext.js (Turbopack)0.857s (+23.1% 🔺)1.039s (+3.5%)0.182s581.52x
🐘 PostgresNext.js (Turbopack)0.941s (+15.9% 🔺)1.377s (+36.8% 🔺)0.436s451.66x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express5.939s (+8.0% 🔺)7.671s (+7.9% 🔺)1.733s81.00x
▲ VercelNitro6.056s (-18.8% 🟢)7.518s (-21.0% 🟢)1.462s81.02x
▲ VercelNext.js (Turbopack)⚠️missing----

🔍 Observability: Express | Nitro

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.394s (-1.6%)2.030s (+1.1%)0.636s451.00x
🐘 PostgresExpress1.435s (-6.6% 🟢)2.053s (-4.6%)0.618s441.03x
💻 LocalExpress1.477s (-7.2% 🟢)2.005s (-1.2%)0.528s451.06x
💻 LocalNitro1.489s (+1.7%)2.006s (~)0.517s451.07x
💻 LocalNext.js (Turbopack)2.089s (+20.8% 🔺)2.911s (+43.6% 🔺)0.823s311.50x
🐘 PostgresNext.js (Turbopack)2.145s (+10.4% 🔺)2.574s (+18.4% 🔺)0.429s361.54x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express14.723s (-10.1% 🟢)16.752s (-8.5% 🟢)2.029s61.00x
▲ VercelNitro14.762s (+11.7% 🔺)16.203s (+4.7%)1.441s61.00x
▲ VercelNext.js (Turbopack)15.199s (+2.9%)17.372s (+2.6%)2.173s61.03x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro2.774s (-4.8%)3.167s (-3.5%)0.393s381.00x
🐘 PostgresExpress2.779s (-4.6%)3.137s (-11.4% 🟢)0.359s391.00x
💻 LocalExpress3.137s (-8.3% 🟢)3.977s (-0.8%)0.840s311.13x
💻 LocalNitro3.348s (+4.4%)4.009s (~)0.661s301.21x
💻 LocalNext.js (Turbopack)4.238s (+13.7% 🔺)5.010s (+21.9% 🔺)0.773s241.53x
🐘 PostgresNext.js (Turbopack)4.304s (+11.5% 🔺)4.755s (+16.6% 🔺)0.451s261.55x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express30.799s (+6.8% 🔺)33.461s (+8.3% 🔺)2.661s41.00x
▲ VercelNitro31.020s (+4.2%)33.344s (+4.3%)2.324s41.01x
▲ VercelNext.js (Turbopack)31.973s (+18.5% 🔺)34.694s (+18.5% 🔺)2.721s41.04x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express0.221s (-12.2% 🟢)1.006s (~)0.785s601.00x
🐘 PostgresNitro0.225s (-4.5%)1.007s (~)0.782s601.02x
🐘 PostgresNext.js (Turbopack)0.289s (+2.5%)1.010s (~)0.721s601.31x
💻 LocalExpress0.414s (-11.0% 🟢)1.004s (~)0.590s601.87x
💻 LocalNitro0.418s (-1.6%)1.004s (~)0.587s601.89x
💻 LocalNext.js (Turbopack)0.588s (-3.7%)1.022s (-1.6%)0.434s592.66x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express2.424s (+9.6% 🔺)4.113s (~)1.689s151.00x
▲ VercelNitro2.586s (+10.3% 🔺)4.067s (-6.2% 🟢)1.480s151.07x
▲ VercelNext.js (Turbopack)2.760s (+25.5% 🔺)4.441s (+5.2% 🔺)1.681s141.14x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro0.345s (-6.9% 🟢)1.006s (~)0.661s901.00x
🐘 PostgresExpress0.364s (+7.4% 🔺)1.007s (~)0.643s901.05x
🐘 PostgresNext.js (Turbopack)0.612s (+26.9% 🔺)1.141s (+13.4% 🔺)0.528s791.77x
💻 LocalExpress2.041s (-6.8% 🟢)2.564s (-9.2% 🟢)0.522s365.91x
💻 LocalNitro2.142s (+3.8%)2.736s (+3.7%)0.594s336.20x
💻 LocalNext.js (Turbopack)2.281s (-6.9% 🟢)2.947s (-5.2% 🟢)0.665s316.61x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.706s (-87.0% 🟢)7.294s (-84.1% 🟢)1.588s131.00x
▲ VercelExpress5.789s (-86.6% 🟢)7.521s (-83.4% 🟢)1.732s121.01x
▲ VercelNext.js (Turbopack)6.444s (+2.8%)8.035s (-5.4% 🟢)1.592s121.13x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro0.683s (-3.4%)1.007s (~)0.324s1201.00x
🐘 PostgresExpress0.698s (+11.6% 🔺)1.007s (-4.6%)0.308s1201.02x
🐘 PostgresNext.js (Turbopack)1.251s (+27.7% 🔺)1.804s (+12.2% 🔺)0.553s681.83x
💻 LocalExpress8.852s (-14.2% 🟢)9.331s (-14.1% 🟢)0.479s1312.96x
💻 LocalNitro9.747s (+11.9% 🔺)10.277s (+10.1% 🔺)0.530s1214.27x
💻 LocalNext.js (Turbopack)10.651s (+3.3%)11.301s (~)0.650s1115.59x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express15.038s (-1.4%)17.353s (-0.8%)2.315s71.00x
▲ VercelNitro16.319s (-94.8% 🟢)18.256s (-94.2% 🟢)1.937s71.09x
▲ VercelNext.js (Turbopack)18.104s (-88.7% 🟢)20.071s (-87.6% 🟢)1.967s61.20x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

Stream Benchmarks(includes TTFB metrics)
workflow with stream

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.151s (-1.5%)2.005s (~)0.010s (-25.0% 🟢)2.016s (~)0.866s101.00x
💻 LocalNitro1.159s (+0.7%)2.005s (~)0.010s (+4.0%)2.018s (~)0.859s101.01x
🐘 PostgresExpress1.172s (-1.8%)1.999s (~)0.001s (-96.8% 🟢)2.010s (-1.6%)0.838s101.02x
🐘 PostgresNitro1.180s (~)1.996s (~)0.001s (-14.3% 🟢)2.010s (~)0.831s101.03x
💻 LocalNext.js (Turbopack)1.201s (+2.8%)2.004s (~)0.010s (+3.0%)2.018s (~)0.817s101.04x
🐘 PostgresNext.js (Turbopack)1.368s (+10.8% 🔺)1.990s (-0.6%)0.055s (+3580.0% 🔺)2.082s (+3.5%)0.715s101.19x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.307s (+6.6% 🔺)3.590s (+5.1% 🔺)1.139s (+120.8% 🔺)5.133s (+14.9% 🔺)2.826s101.00x
▲ VercelNext.js (Turbopack)2.428s (+8.3% 🔺)3.703s (+4.3%)0.831s (-93.3% 🟢)5.003s (-69.7% 🟢)2.576s101.05x
▲ VercelExpress2.466s (+15.0% 🔺)3.846s (+12.8% 🔺)0.713s (+35.6% 🔺)5.057s (+13.7% 🔺)2.591s101.07x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

stream pipeline with 5 transform steps (1MB)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.548s (-5.4% 🟢)2.008s (~)0.012s (+5.7% 🔺)2.022s (~)0.474s301.00x
💻 LocalNitro1.573s (-9.7% 🟢)2.010s (~)0.013s (+38.7% 🔺)2.025s (-7.9% 🟢)0.451s301.02x
🐘 PostgresNitro1.617s (-2.8%)2.002s (~)0.005s (+29.1% 🔺)2.028s (~)0.411s301.04x
🐘 PostgresExpress1.626s (-6.4% 🟢)2.008s (-6.3% 🟢)0.005s (+64.3% 🔺)2.028s (-6.1% 🟢)0.402s301.05x
💻 LocalNext.js (Turbopack)1.715s (+4.6%)2.009s (~)0.011s (+12.9% 🔺)2.024s (~)0.308s301.11x
🐘 PostgresNext.js (Turbopack)2.571s (+45.8% 🔺)3.165s (+57.3% 🔺)0.004s (+4.4%)3.199s (+57.8% 🔺)0.628s191.66x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express6.232s (+8.2% 🔺)7.789s (+4.8%)0.300s (-15.3% 🟢)8.701s (+3.5%)2.470s71.00x
▲ VercelNitro6.288s (+9.4% 🔺)7.594s (~)0.222s (-34.4% 🟢)8.204s (-3.3%)1.915s81.01x
▲ VercelNext.js (Turbopack)7.670s (+20.4% 🔺)9.265s (+16.7% 🔺)0.184s (-49.0% 🟢)9.896s (+11.6% 🔺)2.226s81.23x

🔍 Observability: Express | Nitro | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Express0.721s (-26.2% 🟢)1.050s (-26.4% 🟢)0.000s (-75.4% 🟢)1.060s (-26.8% 🟢)0.339s571.00x
🐘 PostgresNitro0.733s (+1.5%)1.049s (+1.7%)0.000s (-66.1% 🟢)1.066s (+1.7%)0.332s571.02x
🐘 PostgresNext.js (Turbopack)1.323s (+58.9% 🔺)1.765s (+64.7% 🔺)0.000s (-100.0% 🟢)1.783s (+65.1% 🔺)0.460s341.84x
💻 LocalExpress1.347s (-9.2% 🟢)2.012s (~)0.000s (-40.0% 🟢)2.014s (~)0.668s301.87x
💻 LocalNitro1.419s (+4.9%)2.014s (~)0.000s (-60.0% 🟢)2.016s (~)0.596s301.97x
💻 LocalNext.js (Turbopack)1.484s (+2.5%)2.013s (~)0.000s (+12.5% 🔺)2.016s (~)0.532s302.06x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro3.169s (-12.0% 🟢)4.203s (-17.1% 🟢)0.000s (NaN%)4.575s (-18.7% 🟢)1.406s141.00x
▲ VercelNext.js (Turbopack)3.532s (+6.8% 🔺)4.818s (-1.6%)0.000s (NaN%)5.312s (-2.7%)1.780s121.11x
▲ VercelExpress3.592s (-11.5% 🟢)5.050s (-5.4% 🟢)0.000s (-100.0% 🟢)5.510s (-10.7% 🟢)1.917s111.13x

🔍 Observability: Nitro | Next.js (Turbopack) | Express

fan-out fan-in 10 streams (1MB each)

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
🐘 Postgres🥇 Nitro1.505s (+6.7% 🔺)2.144s (+7.4% 🔺)0.000s (+Infinity% 🔺)2.187s (+8.7% 🔺)0.682s281.00x
🐘 PostgresExpress1.535s (-4.9%)2.254s (~)0.000s (NaN%)2.271s (~)0.736s271.02x
🐘 PostgresNext.js (Turbopack)2.514s (+45.5% 🔺)3.050s (+34.9% 🔺)0.000s (+Infinity% 🔺)3.065s (+35.1% 🔺)0.551s201.67x
💻 LocalNext.js (Turbopack)2.696s (-16.1% 🟢)3.340s (-14.3% 🟢)0.000s (-32.6% 🟢)3.343s (-14.3% 🟢)0.647s191.79x
💻 LocalExpress3.046s (-8.6% 🟢)3.836s (~)0.000s (-50.0% 🟢)3.839s (~)0.793s162.02x
💻 LocalNitro3.178s (+2.0%)4.028s (+3.4%)0.000s (+33.3% 🔺)4.031s (+3.3%)0.853s152.11x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro5.016s (-28.8% 🟢)6.393s (-25.4% 🟢)0.001s (+Infinity% 🔺)6.778s (-25.4% 🟢)1.762s91.00x
▲ VercelExpress5.111s (-19.1% 🟢)6.465s (-15.2% 🟢)0.000s (-70.4% 🟢)7.031s (-14.1% 🟢)1.920s91.02x
▲ VercelNext.js (Turbopack)5.804s (+12.3% 🔺)7.314s (+9.5% 🔺)0.000s (-100.0% 🟢)7.878s (+9.4% 🔺)2.074s81.16x

🔍 Observability: Nitro | Express | Next.js (Turbopack)

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World🥇 Fastest FrameworkWins
💻 LocalExpress15/21
🐘 PostgresNitro13/21
▲ VercelExpress12/21
Fastest World by Framework

Winner determined by most benchmark wins

Framework🥇 Fastest WorldWins
Express🐘 Postgres12/21
Next.js (Turbopack)💻 Local12/21
Nitro🐘 Postgres14/21
Column Definitions
  • Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
  • TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
  • Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
  • Wall Time: Total testbench time (trigger workflow + poll for result)
  • Overhead: Testbench overhead (Wall Time - Workflow Time)
  • Samples: Number of benchmark iterations run
  • vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

  • 💻 Local: In-memory filesystem world (local development)
  • 🐘 Postgres: PostgreSQL database world (local development)
  • ▲ Vercel: Vercel production/preview deployment
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Redis + BullMQ: Community world (local development)
  • 🌐 Cloudflare: Community world (local development)
  • 🌐 MySQL: Community world (local development)
  • 🌐 Azure: Community world (local development)
  • 🌐 NATS JetStream: Community world (local development)
  • 🌐 Upstash: Community world (local development)

📋 View full workflow run

@github-actions

github-actionsBot commented Jun 11, 2026

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🧪 E2E Test Results

All tests passed

Summary

PassedFailedSkippedTotal
✅ ▲ Vercel Production126602191485
✅ 💻 Local Development167102191890
✅ 📦 Local Production167102191890
✅ 🐘 Local Postgres167102191890
✅ 🪟 Windows13500135
✅ 📋 Other7690176945
Total7183010528235

Details by Category

✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro109026
✅ example109026
✅ express109026
✅ fastify109026
✅ hono109026
✅ nextjs-turbopack13302
✅ nextjs-webpack13302
✅ nitro109026
✅ nuxt109026
✅ sveltekit12807
✅ vite109026
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable110025
✅ express-stable110025
✅ fastify-stable110025
✅ hono-stable110025
✅ nextjs-turbopack-canary116019
✅ nextjs-turbopack-stable-lazy-discovery-disabled13500
✅ nextjs-turbopack-stable-lazy-discovery-enabled13500
✅ nextjs-webpack-canary116019
✅ nextjs-webpack-stable-lazy-discovery-disabled13500
✅ nextjs-webpack-stable-lazy-discovery-enabled13500
✅ nitro-stable110025
✅ nuxt-stable110025
✅ sveltekit-stable12906
✅ vite-stable110025
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable110025
✅ express-stable110025
✅ fastify-stable110025
✅ hono-stable110025
✅ nextjs-turbopack-canary116019
✅ nextjs-turbopack-stable-lazy-discovery-disabled13500
✅ nextjs-turbopack-stable-lazy-discovery-enabled13500
✅ nextjs-webpack-canary116019
✅ nextjs-webpack-stable-lazy-discovery-disabled13500
✅ nextjs-webpack-stable-lazy-discovery-enabled13500
✅ nitro-stable110025
✅ nuxt-stable110025
✅ sveltekit-stable12906
✅ vite-stable110025
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable110025
✅ express-stable110025
✅ fastify-stable110025
✅ hono-stable110025
✅ nextjs-turbopack-canary116019
✅ nextjs-turbopack-stable-lazy-discovery-disabled13500
✅ nextjs-turbopack-stable-lazy-discovery-enabled13500
✅ nextjs-webpack-canary116019
✅ nextjs-webpack-stable-lazy-discovery-disabled13500
✅ nextjs-webpack-stable-lazy-discovery-enabled13500
✅ nitro-stable110025
✅ nuxt-stable110025
✅ sveltekit-stable12906
✅ vite-stable110025
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack13500
✅ 📋 Other
AppPassedFailedSkipped
✅ e2e-local-dev-nest-stable110025
✅ e2e-local-dev-tanstack-start-110025
✅ e2e-local-postgres-nest-stable110025
✅ e2e-local-postgres-tanstack-start-110025
✅ e2e-local-prod-nest-stable110025
✅ e2e-local-prod-tanstack-start-110025
✅ e2e-vercel-prod-tanstack-start109026

📋 View full workflow run

@VaguelySerious
VaguelySerious merged commit 4e8a965 into mainJun 11, 2026
188 of 191 checks passed
@VaguelySerious
VaguelySerious deleted the peter/e2e-failure-diagnostics branch June 11, 2026 10:36
github-actionsBot added a commit that referenced this pull request Jun 11, 2026
…ses (#2355)
Signed-off-by: Peter Wielander <mittgfu@gmail.com>
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Backport PR opened against stable: #2357. (backport job run)

pranaygp added a commit that referenced this pull request Jun 11, 2026
…hook-ready
* origin-https/main: (119 commits)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
Prevent local tests from hanging (#2338)
feat(core): add optional namespace for queue topic prefix (#2305)
[web-shared] Show precise durations in the new trace viewer (#2335)
Validate unique workflow step IDs at build time (#2018)
Move run attributes into their own detail card (#2327)
[core] Forward-port stream reconnect to getReadable level (#2318)
[docs] Add "Step executed multiple times" error page (#2310)
Fix flickering on the detail panel when navigating the trace viewer (#2325)
Version Packages (beta) (#2254)
Patch vulnerable package dependencies (#2301)
Deprecate DurableAgent and update it with WorkflowAgent in v5 docs (#2285)
[codex] Fix partial world-local exclusive writes (#2296)
...
# Conflicts:
#	packages/core/src/runtime.ts
#	packages/core/src/runtime/suspension-handler.ts
pranaygp added a commit that referenced this pull request Jun 11, 2026
…t-race-eager-wait
* origin/main:
docs(observability): remove MVP implementation detail bullet (#2367)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
pranaygp added a commit that referenced this pull request Jun 11, 2026
…docs-run-idempotency
* origin-https/main: (115 commits)
[core] V2: unify wait+step queue dispatch in suspension processing (#1925)
fix(world-local,world-postgres): make duplicate hook_created idempotent (#2295)
docs(observability): remove MVP implementation detail bullet (#2367)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
Prevent local tests from hanging (#2338)
feat(core): add optional namespace for queue topic prefix (#2305)
[web-shared] Show precise durations in the new trace viewer (#2335)
Validate unique workflow step IDs at build time (#2018)
Move run attributes into their own detail card (#2327)
[core] Forward-port stream reconnect to getReadable level (#2318)
[docs] Add "Step executed multiple times" error page (#2310)
Fix flickering on the detail panel when navigating the trace viewer (#2325)
Version Packages (beta) (#2254)
...
# Conflicts:
#	docs/content/docs/v4/cookbook/advanced/child-workflows.mdx
#	docs/content/docs/v5/cookbook/advanced/child-workflows.mdx
#	docs/content/docs/v5/cookbook/agent-patterns/durable-agent.mdx
pranaygp added a commit that referenced this pull request Jun 11, 2026
* origin/main:
[core] V2: unify wait+step queue dispatch in suspension processing (#1925)
fix(world-local,world-postgres): make duplicate hook_created idempotent (#2295)
docs(observability): remove MVP implementation detail bullet (#2367)
fix: settle aborted parallel steps before completing abortParallelWorkflow (#2244)
Add native v4 workflow attribute events (#2226)
Version Packages (beta) (#2326)
[ci] Fix flaky windows unit tests (#2359)
Capture Vercel runtime logs when e2e Vercel Prod lanes fail (#2356)
Fix e2e failure reporting under vitest 4 and preserve fetch error causes (#2355)
[core] Fix process crash from rejected waitUntil promises (#2336)
[core] Remove duplicate `waitUntil` for suspension handler async operations (#2345)
Prevent local tests from hanging (#2338)
feat(core): add optional namespace for queue topic prefix (#2305)
[web-shared] Show precise durations in the new trace viewer (#2335)
Validate unique workflow step IDs at build time (#2018)
Move run attributes into their own detail card (#2327)
[core] Forward-port stream reconnect to getReadable level (#2318)
[docs] Add "Step executed multiple times" error page (#2310)
Fix flickering on the detail panel when navigating the trace viewer (#2325)
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@VaguelySerious