Write Next diagnostics to dist dir by ijjk · Pull Request #1857 · vercel/workflow

ijjk · 2026-04-27T18:20:37Z

Summary

write Next.js workflow diagnostics manifests to the configured Next dist dir under diagnostics/
keep .vercel/output/diagnostics as the fallback only for the Vercel Build Output API builder
update unit/e2e expectations and add a changeset

x-ref: slack thread

Tests

corepack pnpm --filter @workflow/builders build
corepack pnpm --filter @workflow/next build
corepack pnpm --filter @workflow/builders exec vitest run src/get-input-files.test.ts
corepack pnpm exec vitest run packages/next/src/index.test.ts
corepack pnpm changeset status
git diff --check

changeset-bot · 2026-04-27T18:20:41Z

🦋 Changeset detected

Latest commit: 5417b28

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

This PR includes changesets to release 17 packages

Name	Type
@workflow/builders	Patch
@workflow/next	Patch
@workflow/astro	Patch
@workflow/cli	Patch
@workflow/nest	Patch
@workflow/nitro	Patch
@workflow/rollup	Patch
@workflow/sveltekit	Patch
@workflow/vite	Patch
@workflow/vitest	Patch
workflow	Patch
@workflow/world-testing	Patch
@workflow/nuxt	Patch
@workflow/ai	Patch
@workflow/core	Patch
@workflow/web-shared	Patch
@workflow/web	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

vercel · 2026-04-27T18:20:43Z

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

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	Apr 28, 2026 9:04pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	Apr 28, 2026 9:04pm
example-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-astro-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-express-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-fastify-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-hono-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-nitro-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-nuxt-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-sveltekit-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-vite-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workflow-docs	Ready	Preview, Comment, Open in v0	Apr 28, 2026 9:04pm
workflow-swc-playground	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workflow-web	Ready	Preview, Comment	Apr 28, 2026 9:04pm

github-actions · 2026-04-27T18:20:47Z

📊 Benchmark Results

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

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	0.041s (-8.1% 🟢)	1.005s (~)	0.964s	10	1.00x
💻 Local	Next.js (Turbopack)	0.041s	1.005s	0.965s	10	1.00x
💻 Local	Nitro	0.044s (+1.4%)	1.005s (~)	0.961s	10	1.07x
🐘 Postgres	Next.js (Turbopack)	0.057s	1.009s	0.952s	10	1.41x
🐘 Postgres	Express	0.062s (+6.6% 🔺)	1.009s (~)	0.947s	10	1.52x
🐘 Postgres	Nitro	0.064s (-32.4% 🟢)	1.012s (-3.0%)	0.947s	10	1.58x

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	1.094s	2.006s	0.912s	10	1.00x
💻 Local	Nitro	1.127s (~)	2.006s (~)	0.879s	10	1.03x
💻 Local	Express	1.134s (+0.8%)	2.005s (~)	0.872s	10	1.04x
🐘 Postgres	Next.js (Turbopack)	1.136s	2.011s	0.874s	10	1.04x
🐘 Postgres	Nitro	1.153s (+1.2%)	2.011s (~)	0.858s	10	1.05x
🐘 Postgres	Express	1.157s (+0.9%)	2.008s (~)	0.851s	10	1.06x

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	10.636s	11.023s	0.387s	3	1.00x
🐘 Postgres	Next.js (Turbopack)	10.885s	11.019s	0.134s	3	1.02x
🐘 Postgres	Nitro	10.911s (~)	11.022s (~)	0.111s	3	1.03x
🐘 Postgres	Express	10.924s (~)	11.016s (~)	0.093s	3	1.03x
💻 Local	Nitro	10.934s (~)	11.024s (~)	0.090s	3	1.03x
💻 Local	Express	10.941s (~)	11.023s (~)	0.082s	3	1.03x

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	14.300s	15.029s	0.729s	4	1.00x
🐘 Postgres	Next.js (Turbopack)	14.421s	15.019s	0.597s	4	1.01x
🐘 Postgres	Express	14.498s (-0.6%)	15.018s (~)	0.520s	4	1.01x
🐘 Postgres	Nitro	14.570s (~)	15.023s (~)	0.453s	4	1.02x
💻 Local	Nitro	14.964s (-0.7%)	15.031s (-6.2% 🟢)	0.067s	4	1.05x
💻 Local	Express	14.977s (~)	15.029s (~)	0.053s	4	1.05x

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	13.879s	14.309s	0.430s	7	1.00x
🐘 Postgres	Express	13.951s (~)	14.453s (-1.0%)	0.502s	7	1.01x
🐘 Postgres	Nitro	14.006s (~)	14.453s (+1.0%)	0.447s	7	1.01x
💻 Local	Next.js (Turbopack)	15.028s	15.530s	0.502s	6	1.08x
💻 Local	Express	16.410s (-1.2%)	17.031s (~)	0.621s	6	1.18x
💻 Local	Nitro	16.413s (-2.2%)	17.031s (~)	0.619s	6	1.18x

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.226s	2.010s	0.784s	15	1.00x
🐘 Postgres	Express	1.259s (~)	2.011s (~)	0.752s	15	1.03x
🐘 Postgres	Nitro	1.285s (+0.8%)	2.010s (~)	0.725s	15	1.05x
💻 Local	Next.js (Turbopack)	1.480s	2.006s	0.526s	15	1.21x
💻 Local	Express	1.504s (+1.0%)	2.006s (~)	0.501s	15	1.23x
💻 Local	Nitro	1.506s (-7.7% 🟢)	2.006s (-3.3%)	0.500s	15	1.23x

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.313s (-2.0%)	3.009s (~)	0.695s	10	1.00x
🐘 Postgres	Nitro	2.371s (+0.8%)	3.008s (~)	0.637s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	2.387s	3.009s	0.622s	10	1.03x
💻 Local	Next.js (Turbopack)	2.617s	3.008s	0.391s	10	1.13x
💻 Local	Express	2.788s (-5.6% 🟢)	3.109s (-10.0% 🟢)	0.320s	10	1.21x
💻 Local	Nitro	2.822s (-10.2% 🟢)	3.207s (-17.4% 🟢)	0.386s	10	1.22x

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.462s (-0.7%)	4.010s (~)	0.548s	8	1.00x
🐘 Postgres	Nitro	3.494s (~)	4.011s (~)	0.517s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	3.653s	4.012s	0.358s	8	1.06x
💻 Local	Next.js (Turbopack)	6.818s	7.215s	0.397s	5	1.97x
💻 Local	Nitro	7.789s (-6.7% 🟢)	8.518s (-5.6% 🟢)	0.729s	4	2.25x
💻 Local	Express	7.846s (-5.9% 🟢)	8.520s (-5.6% 🟢)	0.674s	4	2.27x

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.223s	2.010s	0.787s	15	1.00x
🐘 Postgres	Nitro	1.253s (~)	2.008s (~)	0.755s	15	1.02x
🐘 Postgres	Express	1.281s (+1.9%)	2.008s (~)	0.727s	15	1.05x
💻 Local	Express	1.481s (-21.8% 🟢)	2.006s (-15.1% 🟢)	0.525s	15	1.21x
💻 Local	Next.js (Turbopack)	1.500s	2.006s	0.506s	15	1.23x
💻 Local	Nitro	1.534s (-17.8% 🟢)	2.006s (-14.3% 🟢)	0.472s	15	1.25x

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.343s (~)	3.008s (~)	0.665s	10	1.00x
🐘 Postgres	Nitro	2.356s (+0.7%)	3.011s (~)	0.655s	10	1.01x
🐘 Postgres	Next.js (Turbopack)	2.397s	3.009s	0.612s	10	1.02x
💻 Local	Next.js (Turbopack)	2.792s	3.007s	0.214s	10	1.19x
💻 Local	Express	2.856s (-8.8% 🟢)	3.007s (-20.1% 🟢)	0.151s	10	1.22x
💻 Local	Nitro	2.971s (-3.1%)	3.452s (-11.2% 🟢)	0.481s	9	1.27x

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.465s (-1.0%)	4.011s (~)	0.546s	8	1.00x
🐘 Postgres	Nitro	3.505s (+0.7%)	4.010s (~)	0.505s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	3.621s	4.010s	0.389s	8	1.05x
💻 Local	Next.js (Turbopack)	7.059s	7.770s	0.710s	4	2.04x
💻 Local	Nitro	8.118s (-11.2% 🟢)	8.522s (-15.0% 🟢)	0.404s	4	2.34x
💻 Local	Express	8.395s (-4.6%)	9.021s (-2.7%)	0.626s	4	2.42x

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.699s	1.004s	0.305s	60	1.00x
🐘 Postgres	Next.js (Turbopack)	0.763s	1.006s	0.243s	60	1.09x
🐘 Postgres	Express	0.800s (-4.7%)	1.006s (-1.7%)	0.206s	60	1.14x
🐘 Postgres	Nitro	0.837s (+2.0%)	1.006s (~)	0.170s	60	1.20x
💻 Local	Nitro	1.011s (+3.1%)	1.505s (+37.6% 🔺)	0.494s	40	1.45x
💻 Local	Express	1.038s (+5.5% 🔺)	2.006s (+86.4% 🔺)	0.967s	30	1.49x

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.893s (-4.2%)	2.052s (-9.1% 🟢)	0.159s	44	1.00x
🐘 Postgres	Next.js (Turbopack)	1.954s	2.174s	0.220s	42	1.03x
🐘 Postgres	Nitro	2.047s (+6.2% 🔺)	2.656s (+26.4% 🔺)	0.608s	34	1.08x
💻 Local	Next.js (Turbopack)	2.311s	3.008s	0.697s	30	1.22x
💻 Local	Nitro	3.029s (~)	3.729s (-0.8%)	0.700s	25	1.60x
💻 Local	Express	3.052s (+1.2%)	3.922s (+9.4% 🔺)	0.870s	23	1.61x

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	3.781s	4.010s	0.229s	30	1.00x
🐘 Postgres	Express	3.873s (-2.9%)	4.147s (-5.1% 🟢)	0.274s	29	1.02x
🐘 Postgres	Nitro	4.061s (-1.0%)	4.665s (+1.3%)	0.604s	26	1.07x
💻 Local	Next.js (Turbopack)	7.373s	8.016s	0.643s	15	1.95x
💻 Local	Nitro	9.010s (-3.1%)	9.479s (-5.4% 🟢)	0.468s	13	2.38x
💻 Local	Express	9.018s (-2.1%)	9.402s (-6.1% 🟢)	0.385s	13	2.38x

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.254s	1.007s	0.753s	60	1.00x
🐘 Postgres	Express	0.283s (~)	1.007s (~)	0.724s	60	1.11x
🐘 Postgres	Nitro	0.284s (~)	1.007s (~)	0.723s	60	1.12x
💻 Local	Express	0.566s (+1.0%)	1.004s (~)	0.438s	60	2.23x
💻 Local	Nitro	0.572s (-5.3% 🟢)	1.004s (-1.7%)	0.432s	60	2.25x
💻 Local	Next.js (Turbopack)	0.628s	1.094s	0.466s	56	2.47x

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.480s	1.006s	0.526s	90	1.00x
🐘 Postgres	Express	0.503s (-1.3%)	1.007s (~)	0.504s	90	1.05x
🐘 Postgres	Nitro	0.523s (+5.3% 🔺)	1.007s (~)	0.484s	90	1.09x
💻 Local	Nitro	2.352s (-7.3% 🟢)	3.009s (~)	0.657s	30	4.89x
💻 Local	Express	2.366s (-5.8% 🟢)	3.009s (~)	0.642s	30	4.93x
💻 Local	Next.js (Turbopack)	2.498s	3.008s	0.510s	30	5.20x

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.763s	1.006s	0.244s	120	1.00x
🐘 Postgres	Express	0.808s (-1.4%)	1.016s (~)	0.209s	119	1.06x
🐘 Postgres	Nitro	0.809s (+2.4%)	1.009s (~)	0.200s	119	1.06x
💻 Local	Next.js (Turbopack)	9.578s	10.271s	0.693s	12	12.56x
💻 Local	Express	10.413s (-6.9% 🟢)	11.031s (-7.6% 🟢)	0.618s	11	13.66x
💻 Local	Nitro	10.453s (-6.6% 🟢)	11.029s (-5.4% 🟢)	0.576s	11	13.71x

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.146s	1.003s	0.010s	1.016s	0.870s	10	1.00x
🐘 Postgres	Next.js (Turbopack)	0.197s	1.000s	0.002s	1.010s	0.813s	10	1.35x
💻 Local	Nitro	0.205s (-4.0%)	1.004s (~)	0.010s (-23.2% 🟢)	1.016s (~)	0.811s	10	1.41x
💻 Local	Express	0.206s (+3.5%)	1.004s (~)	0.010s (-17.4% 🟢)	1.016s (~)	0.810s	10	1.41x
🐘 Postgres	Express	0.208s (+1.4%)	0.991s (-0.8%)	0.001s (-18.8% 🟢)	1.009s (~)	0.801s	10	1.42x
🐘 Postgres	Nitro	0.217s (+5.7% 🔺)	0.996s (~)	0.001s (-13.3% 🟢)	1.010s (~)	0.794s	10	1.48x

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.590s	1.010s	0.009s	1.023s	0.432s	59	1.00x
🐘 Postgres	Next.js (Turbopack)	0.610s	1.009s	0.006s	1.024s	0.413s	59	1.03x
🐘 Postgres	Express	0.613s (-2.7%)	1.021s (+1.4%)	0.004s (-2.3%)	1.038s (+1.5%)	0.425s	58	1.04x
🐘 Postgres	Nitro	0.627s (~)	1.021s (+1.4%)	0.004s (+2.1%)	1.040s (+1.7%)	0.413s	58	1.06x
💻 Local	Nitro	0.761s (-9.2% 🟢)	1.013s (~)	0.009s (~)	1.024s (-8.2% 🟢)	0.263s	59	1.29x
💻 Local	Express	0.768s (+1.4%)	1.013s (-1.6%)	0.009s (-4.2%)	1.024s (-1.6%)	0.256s	59	1.30x

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.906s	1.133s	0.000s	1.142s	0.235s	53	1.00x
🐘 Postgres	Express	0.952s (-0.9%)	1.169s (-8.5% 🟢)	0.000s (-100.0% 🟢)	1.184s (-9.4% 🟢)	0.232s	51	1.05x
🐘 Postgres	Nitro	0.969s (~)	1.293s (+3.6%)	0.000s (+2.1%)	1.306s (+3.8%)	0.337s	47	1.07x
💻 Local	Next.js (Turbopack)	1.221s	2.018s	0.000s	2.020s	0.799s	30	1.35x
💻 Local	Nitro	1.229s (+0.5%)	2.021s (~)	0.000s (+233.3% 🔺)	2.023s (~)	0.794s	30	1.36x
💻 Local	Express	1.230s (~)	2.021s (~)	0.000s (+10.0% 🔺)	2.023s (~)	0.793s	30	1.36x

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.703s (-3.9%)	2.097s (-3.7%)	0.000s (NaN%)	2.112s (-3.9%)	0.409s	29	1.00x
🐘 Postgres	Nitro	1.814s (+1.3%)	2.140s (~)	0.000s (-100.0% 🟢)	2.153s (-1.0%)	0.339s	28	1.07x
🐘 Postgres	Next.js (Turbopack)	1.857s	2.182s	0.000s	2.189s	0.332s	28	1.09x
💻 Local	Express	3.321s (-4.2%)	3.973s (-1.5%)	0.001s (-29.7% 🟢)	3.977s (-1.5%)	0.656s	16	1.95x
💻 Local	Nitro	3.495s (+3.2%)	4.033s (~)	0.001s (+25.0% 🔺)	4.037s (~)	0.542s	15	2.05x
💻 Local	Next.js (Turbopack)	3.598s	4.097s	0.001s	4.101s	0.503s	15	2.11x

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Next.js (Turbopack)	16/21
🐘 Postgres	Next.js (Turbopack)	15/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	18/21
Next.js (Turbopack)	🐘 Postgres	14/21
Nitro	🐘 Postgres	18/21

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)

📋 View full workflow run

github-actions · 2026-04-27T18:20:47Z

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Skipped	Total
✅ ▲ Vercel Production	978	67	1045
✅ 💻 Local Development	1054	86	1140
✅ 📦 Local Production	1054	86	1140
✅ 🐘 Local Postgres	1054	86	1140
✅ 🪟 Windows	95	0	95
✅ 📋 Other	267	18	285
Total	4502	343	4845

Details by Category

✅ ▲ Vercel Production

App	Passed	Skipped
✅ astro	88	7
✅ example	88	7
✅ express	88	7
✅ fastify	88	7
✅ hono	88	7
✅ nextjs-turbopack	93	2
✅ nextjs-webpack	93	2
✅ nitro	88	7
✅ nuxt	88	7
✅ sveltekit	88	7
✅ vite	88	7

✅ 💻 Local Development

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	95	0	0

✅ 📋 Other

App	Passed	Skipped
✅ e2e-local-dev-nest-stable	89	6
✅ e2e-local-postgres-nest-stable	89	6
✅ e2e-local-prod-nest-stable	89	6

📋 View full workflow run

VaguelySerious · 2026-04-27T19:09:17Z

seems to fail CI e2e tests btw

VaguelySerious

AI review: no blocking issues

ijjk · 2026-04-27T19:30:09Z

Checked the failures. They look unrelated to this change: the Next canary jobs fail during install because @next/env@16.3.0-canary.3 is not available while canary points at 16.3.0-canary.2, and the docs smoke failure is a Vercel API 403 invalidToken. Stable Next jobs passed.

janory · 2026-04-28T07:56:57Z

+ return this.resolvePath(
+ '.vercel/output/diagnostics/workflows-manifest.json'
+ );


We should only ever write to this dir, if it's a prebuilt build. Is it what the if condition checks?

Why would we only want for prebuilt we always want this included in diagnostics for debugging same as the other stuff we output to the diagnostics for Next.js builds.

ijjk · 2026-04-27T18:20:37Z

Summary

write Next.js workflow diagnostics manifests to the configured Next dist dir under diagnostics/
keep .vercel/output/diagnostics as the fallback only for the Vercel Build Output API builder
update unit/e2e expectations and add a changeset

x-ref: slack thread

Tests

corepack pnpm --filter @workflow/builders build
corepack pnpm --filter @workflow/next build
corepack pnpm --filter @workflow/builders exec vitest run src/get-input-files.test.ts
corepack pnpm exec vitest run packages/next/src/index.test.ts
corepack pnpm changeset status
git diff --check

changeset-bot · 2026-04-27T18:20:41Z

🦋 Changeset detected

Latest commit: 5417b28

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

This PR includes changesets to release 17 packages

Name	Type
@workflow/builders	Patch
@workflow/next	Patch
@workflow/astro	Patch
@workflow/cli	Patch
@workflow/nest	Patch
@workflow/nitro	Patch
@workflow/rollup	Patch
@workflow/sveltekit	Patch
@workflow/vite	Patch
@workflow/vitest	Patch
workflow	Patch
@workflow/world-testing	Patch
@workflow/nuxt	Patch
@workflow/ai	Patch
@workflow/core	Patch
@workflow/web-shared	Patch
@workflow/web	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

vercel · 2026-04-27T18:20:43Z

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

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	Apr 28, 2026 9:04pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	Apr 28, 2026 9:04pm
example-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-astro-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-express-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-fastify-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-hono-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-nitro-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-nuxt-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-sveltekit-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-vite-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workflow-docs	Ready	Preview, Comment, Open in v0	Apr 28, 2026 9:04pm
workflow-swc-playground	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workflow-web	Ready	Preview, Comment	Apr 28, 2026 9:04pm

github-actions · 2026-04-27T18:20:47Z

📊 Benchmark Results

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

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	0.041s (-8.1% 🟢)	1.005s (~)	0.964s	10	1.00x
💻 Local	Next.js (Turbopack)	0.041s	1.005s	0.965s	10	1.00x
💻 Local	Nitro	0.044s (+1.4%)	1.005s (~)	0.961s	10	1.07x
🐘 Postgres	Next.js (Turbopack)	0.057s	1.009s	0.952s	10	1.41x
🐘 Postgres	Express	0.062s (+6.6% 🔺)	1.009s (~)	0.947s	10	1.52x
🐘 Postgres	Nitro	0.064s (-32.4% 🟢)	1.012s (-3.0%)	0.947s	10	1.58x

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	1.094s	2.006s	0.912s	10	1.00x
💻 Local	Nitro	1.127s (~)	2.006s (~)	0.879s	10	1.03x
💻 Local	Express	1.134s (+0.8%)	2.005s (~)	0.872s	10	1.04x
🐘 Postgres	Next.js (Turbopack)	1.136s	2.011s	0.874s	10	1.04x
🐘 Postgres	Nitro	1.153s (+1.2%)	2.011s (~)	0.858s	10	1.05x
🐘 Postgres	Express	1.157s (+0.9%)	2.008s (~)	0.851s	10	1.06x

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	10.636s	11.023s	0.387s	3	1.00x
🐘 Postgres	Next.js (Turbopack)	10.885s	11.019s	0.134s	3	1.02x
🐘 Postgres	Nitro	10.911s (~)	11.022s (~)	0.111s	3	1.03x
🐘 Postgres	Express	10.924s (~)	11.016s (~)	0.093s	3	1.03x
💻 Local	Nitro	10.934s (~)	11.024s (~)	0.090s	3	1.03x
💻 Local	Express	10.941s (~)	11.023s (~)	0.082s	3	1.03x

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	14.300s	15.029s	0.729s	4	1.00x
🐘 Postgres	Next.js (Turbopack)	14.421s	15.019s	0.597s	4	1.01x
🐘 Postgres	Express	14.498s (-0.6%)	15.018s (~)	0.520s	4	1.01x
🐘 Postgres	Nitro	14.570s (~)	15.023s (~)	0.453s	4	1.02x
💻 Local	Nitro	14.964s (-0.7%)	15.031s (-6.2% 🟢)	0.067s	4	1.05x
💻 Local	Express	14.977s (~)	15.029s (~)	0.053s	4	1.05x

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	13.879s	14.309s	0.430s	7	1.00x
🐘 Postgres	Express	13.951s (~)	14.453s (-1.0%)	0.502s	7	1.01x
🐘 Postgres	Nitro	14.006s (~)	14.453s (+1.0%)	0.447s	7	1.01x
💻 Local	Next.js (Turbopack)	15.028s	15.530s	0.502s	6	1.08x
💻 Local	Express	16.410s (-1.2%)	17.031s (~)	0.621s	6	1.18x
💻 Local	Nitro	16.413s (-2.2%)	17.031s (~)	0.619s	6	1.18x

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.226s	2.010s	0.784s	15	1.00x
🐘 Postgres	Express	1.259s (~)	2.011s (~)	0.752s	15	1.03x
🐘 Postgres	Nitro	1.285s (+0.8%)	2.010s (~)	0.725s	15	1.05x
💻 Local	Next.js (Turbopack)	1.480s	2.006s	0.526s	15	1.21x
💻 Local	Express	1.504s (+1.0%)	2.006s (~)	0.501s	15	1.23x
💻 Local	Nitro	1.506s (-7.7% 🟢)	2.006s (-3.3%)	0.500s	15	1.23x

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.313s (-2.0%)	3.009s (~)	0.695s	10	1.00x
🐘 Postgres	Nitro	2.371s (+0.8%)	3.008s (~)	0.637s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	2.387s	3.009s	0.622s	10	1.03x
💻 Local	Next.js (Turbopack)	2.617s	3.008s	0.391s	10	1.13x
💻 Local	Express	2.788s (-5.6% 🟢)	3.109s (-10.0% 🟢)	0.320s	10	1.21x
💻 Local	Nitro	2.822s (-10.2% 🟢)	3.207s (-17.4% 🟢)	0.386s	10	1.22x

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.462s (-0.7%)	4.010s (~)	0.548s	8	1.00x
🐘 Postgres	Nitro	3.494s (~)	4.011s (~)	0.517s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	3.653s	4.012s	0.358s	8	1.06x
💻 Local	Next.js (Turbopack)	6.818s	7.215s	0.397s	5	1.97x
💻 Local	Nitro	7.789s (-6.7% 🟢)	8.518s (-5.6% 🟢)	0.729s	4	2.25x
💻 Local	Express	7.846s (-5.9% 🟢)	8.520s (-5.6% 🟢)	0.674s	4	2.27x

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.223s	2.010s	0.787s	15	1.00x
🐘 Postgres	Nitro	1.253s (~)	2.008s (~)	0.755s	15	1.02x
🐘 Postgres	Express	1.281s (+1.9%)	2.008s (~)	0.727s	15	1.05x
💻 Local	Express	1.481s (-21.8% 🟢)	2.006s (-15.1% 🟢)	0.525s	15	1.21x
💻 Local	Next.js (Turbopack)	1.500s	2.006s	0.506s	15	1.23x
💻 Local	Nitro	1.534s (-17.8% 🟢)	2.006s (-14.3% 🟢)	0.472s	15	1.25x

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.343s (~)	3.008s (~)	0.665s	10	1.00x
🐘 Postgres	Nitro	2.356s (+0.7%)	3.011s (~)	0.655s	10	1.01x
🐘 Postgres	Next.js (Turbopack)	2.397s	3.009s	0.612s	10	1.02x
💻 Local	Next.js (Turbopack)	2.792s	3.007s	0.214s	10	1.19x
💻 Local	Express	2.856s (-8.8% 🟢)	3.007s (-20.1% 🟢)	0.151s	10	1.22x
💻 Local	Nitro	2.971s (-3.1%)	3.452s (-11.2% 🟢)	0.481s	9	1.27x

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.465s (-1.0%)	4.011s (~)	0.546s	8	1.00x
🐘 Postgres	Nitro	3.505s (+0.7%)	4.010s (~)	0.505s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	3.621s	4.010s	0.389s	8	1.05x
💻 Local	Next.js (Turbopack)	7.059s	7.770s	0.710s	4	2.04x
💻 Local	Nitro	8.118s (-11.2% 🟢)	8.522s (-15.0% 🟢)	0.404s	4	2.34x
💻 Local	Express	8.395s (-4.6%)	9.021s (-2.7%)	0.626s	4	2.42x

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.699s	1.004s	0.305s	60	1.00x
🐘 Postgres	Next.js (Turbopack)	0.763s	1.006s	0.243s	60	1.09x
🐘 Postgres	Express	0.800s (-4.7%)	1.006s (-1.7%)	0.206s	60	1.14x
🐘 Postgres	Nitro	0.837s (+2.0%)	1.006s (~)	0.170s	60	1.20x
💻 Local	Nitro	1.011s (+3.1%)	1.505s (+37.6% 🔺)	0.494s	40	1.45x
💻 Local	Express	1.038s (+5.5% 🔺)	2.006s (+86.4% 🔺)	0.967s	30	1.49x

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.893s (-4.2%)	2.052s (-9.1% 🟢)	0.159s	44	1.00x
🐘 Postgres	Next.js (Turbopack)	1.954s	2.174s	0.220s	42	1.03x
🐘 Postgres	Nitro	2.047s (+6.2% 🔺)	2.656s (+26.4% 🔺)	0.608s	34	1.08x
💻 Local	Next.js (Turbopack)	2.311s	3.008s	0.697s	30	1.22x
💻 Local	Nitro	3.029s (~)	3.729s (-0.8%)	0.700s	25	1.60x
💻 Local	Express	3.052s (+1.2%)	3.922s (+9.4% 🔺)	0.870s	23	1.61x

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	3.781s	4.010s	0.229s	30	1.00x
🐘 Postgres	Express	3.873s (-2.9%)	4.147s (-5.1% 🟢)	0.274s	29	1.02x
🐘 Postgres	Nitro	4.061s (-1.0%)	4.665s (+1.3%)	0.604s	26	1.07x
💻 Local	Next.js (Turbopack)	7.373s	8.016s	0.643s	15	1.95x
💻 Local	Nitro	9.010s (-3.1%)	9.479s (-5.4% 🟢)	0.468s	13	2.38x
💻 Local	Express	9.018s (-2.1%)	9.402s (-6.1% 🟢)	0.385s	13	2.38x

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.254s	1.007s	0.753s	60	1.00x
🐘 Postgres	Express	0.283s (~)	1.007s (~)	0.724s	60	1.11x
🐘 Postgres	Nitro	0.284s (~)	1.007s (~)	0.723s	60	1.12x
💻 Local	Express	0.566s (+1.0%)	1.004s (~)	0.438s	60	2.23x
💻 Local	Nitro	0.572s (-5.3% 🟢)	1.004s (-1.7%)	0.432s	60	2.25x
💻 Local	Next.js (Turbopack)	0.628s	1.094s	0.466s	56	2.47x

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.480s	1.006s	0.526s	90	1.00x
🐘 Postgres	Express	0.503s (-1.3%)	1.007s (~)	0.504s	90	1.05x
🐘 Postgres	Nitro	0.523s (+5.3% 🔺)	1.007s (~)	0.484s	90	1.09x
💻 Local	Nitro	2.352s (-7.3% 🟢)	3.009s (~)	0.657s	30	4.89x
💻 Local	Express	2.366s (-5.8% 🟢)	3.009s (~)	0.642s	30	4.93x
💻 Local	Next.js (Turbopack)	2.498s	3.008s	0.510s	30	5.20x

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.763s	1.006s	0.244s	120	1.00x
🐘 Postgres	Express	0.808s (-1.4%)	1.016s (~)	0.209s	119	1.06x
🐘 Postgres	Nitro	0.809s (+2.4%)	1.009s (~)	0.200s	119	1.06x
💻 Local	Next.js (Turbopack)	9.578s	10.271s	0.693s	12	12.56x
💻 Local	Express	10.413s (-6.9% 🟢)	11.031s (-7.6% 🟢)	0.618s	11	13.66x
💻 Local	Nitro	10.453s (-6.6% 🟢)	11.029s (-5.4% 🟢)	0.576s	11	13.71x

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.146s	1.003s	0.010s	1.016s	0.870s	10	1.00x
🐘 Postgres	Next.js (Turbopack)	0.197s	1.000s	0.002s	1.010s	0.813s	10	1.35x
💻 Local	Nitro	0.205s (-4.0%)	1.004s (~)	0.010s (-23.2% 🟢)	1.016s (~)	0.811s	10	1.41x
💻 Local	Express	0.206s (+3.5%)	1.004s (~)	0.010s (-17.4% 🟢)	1.016s (~)	0.810s	10	1.41x
🐘 Postgres	Express	0.208s (+1.4%)	0.991s (-0.8%)	0.001s (-18.8% 🟢)	1.009s (~)	0.801s	10	1.42x
🐘 Postgres	Nitro	0.217s (+5.7% 🔺)	0.996s (~)	0.001s (-13.3% 🟢)	1.010s (~)	0.794s	10	1.48x

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.590s	1.010s	0.009s	1.023s	0.432s	59	1.00x
🐘 Postgres	Next.js (Turbopack)	0.610s	1.009s	0.006s	1.024s	0.413s	59	1.03x
🐘 Postgres	Express	0.613s (-2.7%)	1.021s (+1.4%)	0.004s (-2.3%)	1.038s (+1.5%)	0.425s	58	1.04x
🐘 Postgres	Nitro	0.627s (~)	1.021s (+1.4%)	0.004s (+2.1%)	1.040s (+1.7%)	0.413s	58	1.06x
💻 Local	Nitro	0.761s (-9.2% 🟢)	1.013s (~)	0.009s (~)	1.024s (-8.2% 🟢)	0.263s	59	1.29x
💻 Local	Express	0.768s (+1.4%)	1.013s (-1.6%)	0.009s (-4.2%)	1.024s (-1.6%)	0.256s	59	1.30x

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.906s	1.133s	0.000s	1.142s	0.235s	53	1.00x
🐘 Postgres	Express	0.952s (-0.9%)	1.169s (-8.5% 🟢)	0.000s (-100.0% 🟢)	1.184s (-9.4% 🟢)	0.232s	51	1.05x
🐘 Postgres	Nitro	0.969s (~)	1.293s (+3.6%)	0.000s (+2.1%)	1.306s (+3.8%)	0.337s	47	1.07x
💻 Local	Next.js (Turbopack)	1.221s	2.018s	0.000s	2.020s	0.799s	30	1.35x
💻 Local	Nitro	1.229s (+0.5%)	2.021s (~)	0.000s (+233.3% 🔺)	2.023s (~)	0.794s	30	1.36x
💻 Local	Express	1.230s (~)	2.021s (~)	0.000s (+10.0% 🔺)	2.023s (~)	0.793s	30	1.36x

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.703s (-3.9%)	2.097s (-3.7%)	0.000s (NaN%)	2.112s (-3.9%)	0.409s	29	1.00x
🐘 Postgres	Nitro	1.814s (+1.3%)	2.140s (~)	0.000s (-100.0% 🟢)	2.153s (-1.0%)	0.339s	28	1.07x
🐘 Postgres	Next.js (Turbopack)	1.857s	2.182s	0.000s	2.189s	0.332s	28	1.09x
💻 Local	Express	3.321s (-4.2%)	3.973s (-1.5%)	0.001s (-29.7% 🟢)	3.977s (-1.5%)	0.656s	16	1.95x
💻 Local	Nitro	3.495s (+3.2%)	4.033s (~)	0.001s (+25.0% 🔺)	4.037s (~)	0.542s	15	2.05x
💻 Local	Next.js (Turbopack)	3.598s	4.097s	0.001s	4.101s	0.503s	15	2.11x

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Next.js (Turbopack)	16/21
🐘 Postgres	Next.js (Turbopack)	15/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	18/21
Next.js (Turbopack)	🐘 Postgres	14/21
Nitro	🐘 Postgres	18/21

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)

📋 View full workflow run

github-actions · 2026-04-27T18:20:47Z

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Skipped	Total
✅ ▲ Vercel Production	978	67	1045
✅ 💻 Local Development	1054	86	1140
✅ 📦 Local Production	1054	86	1140
✅ 🐘 Local Postgres	1054	86	1140
✅ 🪟 Windows	95	0	95
✅ 📋 Other	267	18	285
Total	4502	343	4845

Details by Category

✅ ▲ Vercel Production

App	Passed	Skipped
✅ astro	88	7
✅ example	88	7
✅ express	88	7
✅ fastify	88	7
✅ hono	88	7
✅ nextjs-turbopack	93	2
✅ nextjs-webpack	93	2
✅ nitro	88	7
✅ nuxt	88	7
✅ sveltekit	88	7
✅ vite	88	7

✅ 💻 Local Development

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	95	0	0

✅ 📋 Other

App	Passed	Skipped
✅ e2e-local-dev-nest-stable	89	6
✅ e2e-local-postgres-nest-stable	89	6
✅ e2e-local-prod-nest-stable	89	6

📋 View full workflow run

VaguelySerious · 2026-04-27T19:09:17Z

seems to fail CI e2e tests btw

VaguelySerious

AI review: no blocking issues

ijjk · 2026-04-27T19:30:09Z

Checked the failures. They look unrelated to this change: the Next canary jobs fail during install because @next/env@16.3.0-canary.3 is not available while canary points at 16.3.0-canary.2, and the docs smoke failure is a Vercel API 403 invalidToken. Stable Next jobs passed.

janory · 2026-04-28T07:56:57Z

+ return this.resolvePath(
+ '.vercel/output/diagnostics/workflows-manifest.json'
+ );


We should only ever write to this dir, if it's a prebuilt build. Is it what the if condition checks?

Why would we only want for prebuilt we always want this included in diagnostics for debugging same as the other stuff we output to the diagnostics for Next.js builds.

ijjk · 2026-04-27T18:20:37Z

Summary

write Next.js workflow diagnostics manifests to the configured Next dist dir under diagnostics/
keep .vercel/output/diagnostics as the fallback only for the Vercel Build Output API builder
update unit/e2e expectations and add a changeset

x-ref: slack thread

Tests

corepack pnpm --filter @workflow/builders build
corepack pnpm --filter @workflow/next build
corepack pnpm --filter @workflow/builders exec vitest run src/get-input-files.test.ts
corepack pnpm exec vitest run packages/next/src/index.test.ts
corepack pnpm changeset status
git diff --check

changeset-bot · 2026-04-27T18:20:41Z

🦋 Changeset detected

Latest commit: 5417b28

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

This PR includes changesets to release 17 packages

Name	Type
@workflow/builders	Patch
@workflow/next	Patch
@workflow/astro	Patch
@workflow/cli	Patch
@workflow/nest	Patch
@workflow/nitro	Patch
@workflow/rollup	Patch
@workflow/sveltekit	Patch
@workflow/vite	Patch
@workflow/vitest	Patch
workflow	Patch
@workflow/world-testing	Patch
@workflow/nuxt	Patch
@workflow/ai	Patch
@workflow/core	Patch
@workflow/web-shared	Patch
@workflow/web	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

vercel · 2026-04-27T18:20:43Z

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

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	Apr 28, 2026 9:04pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	Apr 28, 2026 9:04pm
example-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-astro-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-express-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-fastify-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-hono-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-nitro-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-nuxt-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-sveltekit-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-vite-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workflow-docs	Ready	Preview, Comment, Open in v0	Apr 28, 2026 9:04pm
workflow-swc-playground	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workflow-web	Ready	Preview, Comment	Apr 28, 2026 9:04pm

github-actions · 2026-04-27T18:20:47Z

📊 Benchmark Results

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

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	0.041s (-8.1% 🟢)	1.005s (~)	0.964s	10	1.00x
💻 Local	Next.js (Turbopack)	0.041s	1.005s	0.965s	10	1.00x
💻 Local	Nitro	0.044s (+1.4%)	1.005s (~)	0.961s	10	1.07x
🐘 Postgres	Next.js (Turbopack)	0.057s	1.009s	0.952s	10	1.41x
🐘 Postgres	Express	0.062s (+6.6% 🔺)	1.009s (~)	0.947s	10	1.52x
🐘 Postgres	Nitro	0.064s (-32.4% 🟢)	1.012s (-3.0%)	0.947s	10	1.58x

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	1.094s	2.006s	0.912s	10	1.00x
💻 Local	Nitro	1.127s (~)	2.006s (~)	0.879s	10	1.03x
💻 Local	Express	1.134s (+0.8%)	2.005s (~)	0.872s	10	1.04x
🐘 Postgres	Next.js (Turbopack)	1.136s	2.011s	0.874s	10	1.04x
🐘 Postgres	Nitro	1.153s (+1.2%)	2.011s (~)	0.858s	10	1.05x
🐘 Postgres	Express	1.157s (+0.9%)	2.008s (~)	0.851s	10	1.06x

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	10.636s	11.023s	0.387s	3	1.00x
🐘 Postgres	Next.js (Turbopack)	10.885s	11.019s	0.134s	3	1.02x
🐘 Postgres	Nitro	10.911s (~)	11.022s (~)	0.111s	3	1.03x
🐘 Postgres	Express	10.924s (~)	11.016s (~)	0.093s	3	1.03x
💻 Local	Nitro	10.934s (~)	11.024s (~)	0.090s	3	1.03x
💻 Local	Express	10.941s (~)	11.023s (~)	0.082s	3	1.03x

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	14.300s	15.029s	0.729s	4	1.00x
🐘 Postgres	Next.js (Turbopack)	14.421s	15.019s	0.597s	4	1.01x
🐘 Postgres	Express	14.498s (-0.6%)	15.018s (~)	0.520s	4	1.01x
🐘 Postgres	Nitro	14.570s (~)	15.023s (~)	0.453s	4	1.02x
💻 Local	Nitro	14.964s (-0.7%)	15.031s (-6.2% 🟢)	0.067s	4	1.05x
💻 Local	Express	14.977s (~)	15.029s (~)	0.053s	4	1.05x

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	13.879s	14.309s	0.430s	7	1.00x
🐘 Postgres	Express	13.951s (~)	14.453s (-1.0%)	0.502s	7	1.01x
🐘 Postgres	Nitro	14.006s (~)	14.453s (+1.0%)	0.447s	7	1.01x
💻 Local	Next.js (Turbopack)	15.028s	15.530s	0.502s	6	1.08x
💻 Local	Express	16.410s (-1.2%)	17.031s (~)	0.621s	6	1.18x
💻 Local	Nitro	16.413s (-2.2%)	17.031s (~)	0.619s	6	1.18x

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.226s	2.010s	0.784s	15	1.00x
🐘 Postgres	Express	1.259s (~)	2.011s (~)	0.752s	15	1.03x
🐘 Postgres	Nitro	1.285s (+0.8%)	2.010s (~)	0.725s	15	1.05x
💻 Local	Next.js (Turbopack)	1.480s	2.006s	0.526s	15	1.21x
💻 Local	Express	1.504s (+1.0%)	2.006s (~)	0.501s	15	1.23x
💻 Local	Nitro	1.506s (-7.7% 🟢)	2.006s (-3.3%)	0.500s	15	1.23x

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.313s (-2.0%)	3.009s (~)	0.695s	10	1.00x
🐘 Postgres	Nitro	2.371s (+0.8%)	3.008s (~)	0.637s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	2.387s	3.009s	0.622s	10	1.03x
💻 Local	Next.js (Turbopack)	2.617s	3.008s	0.391s	10	1.13x
💻 Local	Express	2.788s (-5.6% 🟢)	3.109s (-10.0% 🟢)	0.320s	10	1.21x
💻 Local	Nitro	2.822s (-10.2% 🟢)	3.207s (-17.4% 🟢)	0.386s	10	1.22x

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.462s (-0.7%)	4.010s (~)	0.548s	8	1.00x
🐘 Postgres	Nitro	3.494s (~)	4.011s (~)	0.517s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	3.653s	4.012s	0.358s	8	1.06x
💻 Local	Next.js (Turbopack)	6.818s	7.215s	0.397s	5	1.97x
💻 Local	Nitro	7.789s (-6.7% 🟢)	8.518s (-5.6% 🟢)	0.729s	4	2.25x
💻 Local	Express	7.846s (-5.9% 🟢)	8.520s (-5.6% 🟢)	0.674s	4	2.27x

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.223s	2.010s	0.787s	15	1.00x
🐘 Postgres	Nitro	1.253s (~)	2.008s (~)	0.755s	15	1.02x
🐘 Postgres	Express	1.281s (+1.9%)	2.008s (~)	0.727s	15	1.05x
💻 Local	Express	1.481s (-21.8% 🟢)	2.006s (-15.1% 🟢)	0.525s	15	1.21x
💻 Local	Next.js (Turbopack)	1.500s	2.006s	0.506s	15	1.23x
💻 Local	Nitro	1.534s (-17.8% 🟢)	2.006s (-14.3% 🟢)	0.472s	15	1.25x

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.343s (~)	3.008s (~)	0.665s	10	1.00x
🐘 Postgres	Nitro	2.356s (+0.7%)	3.011s (~)	0.655s	10	1.01x
🐘 Postgres	Next.js (Turbopack)	2.397s	3.009s	0.612s	10	1.02x
💻 Local	Next.js (Turbopack)	2.792s	3.007s	0.214s	10	1.19x
💻 Local	Express	2.856s (-8.8% 🟢)	3.007s (-20.1% 🟢)	0.151s	10	1.22x
💻 Local	Nitro	2.971s (-3.1%)	3.452s (-11.2% 🟢)	0.481s	9	1.27x

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.465s (-1.0%)	4.011s (~)	0.546s	8	1.00x
🐘 Postgres	Nitro	3.505s (+0.7%)	4.010s (~)	0.505s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	3.621s	4.010s	0.389s	8	1.05x
💻 Local	Next.js (Turbopack)	7.059s	7.770s	0.710s	4	2.04x
💻 Local	Nitro	8.118s (-11.2% 🟢)	8.522s (-15.0% 🟢)	0.404s	4	2.34x
💻 Local	Express	8.395s (-4.6%)	9.021s (-2.7%)	0.626s	4	2.42x

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.699s	1.004s	0.305s	60	1.00x
🐘 Postgres	Next.js (Turbopack)	0.763s	1.006s	0.243s	60	1.09x
🐘 Postgres	Express	0.800s (-4.7%)	1.006s (-1.7%)	0.206s	60	1.14x
🐘 Postgres	Nitro	0.837s (+2.0%)	1.006s (~)	0.170s	60	1.20x
💻 Local	Nitro	1.011s (+3.1%)	1.505s (+37.6% 🔺)	0.494s	40	1.45x
💻 Local	Express	1.038s (+5.5% 🔺)	2.006s (+86.4% 🔺)	0.967s	30	1.49x

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.893s (-4.2%)	2.052s (-9.1% 🟢)	0.159s	44	1.00x
🐘 Postgres	Next.js (Turbopack)	1.954s	2.174s	0.220s	42	1.03x
🐘 Postgres	Nitro	2.047s (+6.2% 🔺)	2.656s (+26.4% 🔺)	0.608s	34	1.08x
💻 Local	Next.js (Turbopack)	2.311s	3.008s	0.697s	30	1.22x
💻 Local	Nitro	3.029s (~)	3.729s (-0.8%)	0.700s	25	1.60x
💻 Local	Express	3.052s (+1.2%)	3.922s (+9.4% 🔺)	0.870s	23	1.61x

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	3.781s	4.010s	0.229s	30	1.00x
🐘 Postgres	Express	3.873s (-2.9%)	4.147s (-5.1% 🟢)	0.274s	29	1.02x
🐘 Postgres	Nitro	4.061s (-1.0%)	4.665s (+1.3%)	0.604s	26	1.07x
💻 Local	Next.js (Turbopack)	7.373s	8.016s	0.643s	15	1.95x
💻 Local	Nitro	9.010s (-3.1%)	9.479s (-5.4% 🟢)	0.468s	13	2.38x
💻 Local	Express	9.018s (-2.1%)	9.402s (-6.1% 🟢)	0.385s	13	2.38x

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.254s	1.007s	0.753s	60	1.00x
🐘 Postgres	Express	0.283s (~)	1.007s (~)	0.724s	60	1.11x
🐘 Postgres	Nitro	0.284s (~)	1.007s (~)	0.723s	60	1.12x
💻 Local	Express	0.566s (+1.0%)	1.004s (~)	0.438s	60	2.23x
💻 Local	Nitro	0.572s (-5.3% 🟢)	1.004s (-1.7%)	0.432s	60	2.25x
💻 Local	Next.js (Turbopack)	0.628s	1.094s	0.466s	56	2.47x

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.480s	1.006s	0.526s	90	1.00x
🐘 Postgres	Express	0.503s (-1.3%)	1.007s (~)	0.504s	90	1.05x
🐘 Postgres	Nitro	0.523s (+5.3% 🔺)	1.007s (~)	0.484s	90	1.09x
💻 Local	Nitro	2.352s (-7.3% 🟢)	3.009s (~)	0.657s	30	4.89x
💻 Local	Express	2.366s (-5.8% 🟢)	3.009s (~)	0.642s	30	4.93x
💻 Local	Next.js (Turbopack)	2.498s	3.008s	0.510s	30	5.20x

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.763s	1.006s	0.244s	120	1.00x
🐘 Postgres	Express	0.808s (-1.4%)	1.016s (~)	0.209s	119	1.06x
🐘 Postgres	Nitro	0.809s (+2.4%)	1.009s (~)	0.200s	119	1.06x
💻 Local	Next.js (Turbopack)	9.578s	10.271s	0.693s	12	12.56x
💻 Local	Express	10.413s (-6.9% 🟢)	11.031s (-7.6% 🟢)	0.618s	11	13.66x
💻 Local	Nitro	10.453s (-6.6% 🟢)	11.029s (-5.4% 🟢)	0.576s	11	13.71x

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.146s	1.003s	0.010s	1.016s	0.870s	10	1.00x
🐘 Postgres	Next.js (Turbopack)	0.197s	1.000s	0.002s	1.010s	0.813s	10	1.35x
💻 Local	Nitro	0.205s (-4.0%)	1.004s (~)	0.010s (-23.2% 🟢)	1.016s (~)	0.811s	10	1.41x
💻 Local	Express	0.206s (+3.5%)	1.004s (~)	0.010s (-17.4% 🟢)	1.016s (~)	0.810s	10	1.41x
🐘 Postgres	Express	0.208s (+1.4%)	0.991s (-0.8%)	0.001s (-18.8% 🟢)	1.009s (~)	0.801s	10	1.42x
🐘 Postgres	Nitro	0.217s (+5.7% 🔺)	0.996s (~)	0.001s (-13.3% 🟢)	1.010s (~)	0.794s	10	1.48x

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.590s	1.010s	0.009s	1.023s	0.432s	59	1.00x
🐘 Postgres	Next.js (Turbopack)	0.610s	1.009s	0.006s	1.024s	0.413s	59	1.03x
🐘 Postgres	Express	0.613s (-2.7%)	1.021s (+1.4%)	0.004s (-2.3%)	1.038s (+1.5%)	0.425s	58	1.04x
🐘 Postgres	Nitro	0.627s (~)	1.021s (+1.4%)	0.004s (+2.1%)	1.040s (+1.7%)	0.413s	58	1.06x
💻 Local	Nitro	0.761s (-9.2% 🟢)	1.013s (~)	0.009s (~)	1.024s (-8.2% 🟢)	0.263s	59	1.29x
💻 Local	Express	0.768s (+1.4%)	1.013s (-1.6%)	0.009s (-4.2%)	1.024s (-1.6%)	0.256s	59	1.30x

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.906s	1.133s	0.000s	1.142s	0.235s	53	1.00x
🐘 Postgres	Express	0.952s (-0.9%)	1.169s (-8.5% 🟢)	0.000s (-100.0% 🟢)	1.184s (-9.4% 🟢)	0.232s	51	1.05x
🐘 Postgres	Nitro	0.969s (~)	1.293s (+3.6%)	0.000s (+2.1%)	1.306s (+3.8%)	0.337s	47	1.07x
💻 Local	Next.js (Turbopack)	1.221s	2.018s	0.000s	2.020s	0.799s	30	1.35x
💻 Local	Nitro	1.229s (+0.5%)	2.021s (~)	0.000s (+233.3% 🔺)	2.023s (~)	0.794s	30	1.36x
💻 Local	Express	1.230s (~)	2.021s (~)	0.000s (+10.0% 🔺)	2.023s (~)	0.793s	30	1.36x

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.703s (-3.9%)	2.097s (-3.7%)	0.000s (NaN%)	2.112s (-3.9%)	0.409s	29	1.00x
🐘 Postgres	Nitro	1.814s (+1.3%)	2.140s (~)	0.000s (-100.0% 🟢)	2.153s (-1.0%)	0.339s	28	1.07x
🐘 Postgres	Next.js (Turbopack)	1.857s	2.182s	0.000s	2.189s	0.332s	28	1.09x
💻 Local	Express	3.321s (-4.2%)	3.973s (-1.5%)	0.001s (-29.7% 🟢)	3.977s (-1.5%)	0.656s	16	1.95x
💻 Local	Nitro	3.495s (+3.2%)	4.033s (~)	0.001s (+25.0% 🔺)	4.037s (~)	0.542s	15	2.05x
💻 Local	Next.js (Turbopack)	3.598s	4.097s	0.001s	4.101s	0.503s	15	2.11x

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Next.js (Turbopack)	16/21
🐘 Postgres	Next.js (Turbopack)	15/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	18/21
Next.js (Turbopack)	🐘 Postgres	14/21
Nitro	🐘 Postgres	18/21

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)

📋 View full workflow run

github-actions · 2026-04-27T18:20:47Z

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Skipped	Total
✅ ▲ Vercel Production	978	67	1045
✅ 💻 Local Development	1054	86	1140
✅ 📦 Local Production	1054	86	1140
✅ 🐘 Local Postgres	1054	86	1140
✅ 🪟 Windows	95	0	95
✅ 📋 Other	267	18	285
Total	4502	343	4845

Details by Category

✅ ▲ Vercel Production

App	Passed	Skipped
✅ astro	88	7
✅ example	88	7
✅ express	88	7
✅ fastify	88	7
✅ hono	88	7
✅ nextjs-turbopack	93	2
✅ nextjs-webpack	93	2
✅ nitro	88	7
✅ nuxt	88	7
✅ sveltekit	88	7
✅ vite	88	7

✅ 💻 Local Development

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	95	0	0

✅ 📋 Other

App	Passed	Skipped
✅ e2e-local-dev-nest-stable	89	6
✅ e2e-local-postgres-nest-stable	89	6
✅ e2e-local-prod-nest-stable	89	6

📋 View full workflow run

VaguelySerious · 2026-04-27T19:09:17Z

seems to fail CI e2e tests btw

VaguelySerious

AI review: no blocking issues

ijjk · 2026-04-27T19:30:09Z

Checked the failures. They look unrelated to this change: the Next canary jobs fail during install because @next/env@16.3.0-canary.3 is not available while canary points at 16.3.0-canary.2, and the docs smoke failure is a Vercel API 403 invalidToken. Stable Next jobs passed.

janory · 2026-04-28T07:56:57Z

+ return this.resolvePath(
+ '.vercel/output/diagnostics/workflows-manifest.json'
+ );


We should only ever write to this dir, if it's a prebuilt build. Is it what the if condition checks?

Why would we only want for prebuilt we always want this included in diagnostics for debugging same as the other stuff we output to the diagnostics for Next.js builds.

ijjk · 2026-04-27T18:20:37Z

Summary

write Next.js workflow diagnostics manifests to the configured Next dist dir under diagnostics/
keep .vercel/output/diagnostics as the fallback only for the Vercel Build Output API builder
update unit/e2e expectations and add a changeset

x-ref: slack thread

Tests

corepack pnpm --filter @workflow/builders build
corepack pnpm --filter @workflow/next build
corepack pnpm --filter @workflow/builders exec vitest run src/get-input-files.test.ts
corepack pnpm exec vitest run packages/next/src/index.test.ts
corepack pnpm changeset status
git diff --check

changeset-bot · 2026-04-27T18:20:41Z

🦋 Changeset detected

Latest commit: 5417b28

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

This PR includes changesets to release 17 packages

Name	Type
@workflow/builders	Patch
@workflow/next	Patch
@workflow/astro	Patch
@workflow/cli	Patch
@workflow/nest	Patch
@workflow/nitro	Patch
@workflow/rollup	Patch
@workflow/sveltekit	Patch
@workflow/vite	Patch
@workflow/vitest	Patch
workflow	Patch
@workflow/world-testing	Patch
@workflow/nuxt	Patch
@workflow/ai	Patch
@workflow/core	Patch
@workflow/web-shared	Patch
@workflow/web	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

vercel · 2026-04-27T18:20:43Z

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

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	Apr 28, 2026 9:04pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	Apr 28, 2026 9:04pm
example-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-astro-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-express-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-fastify-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-hono-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-nitro-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-nuxt-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-sveltekit-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-vite-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workflow-docs	Ready	Preview, Comment, Open in v0	Apr 28, 2026 9:04pm
workflow-swc-playground	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workflow-web	Ready	Preview, Comment	Apr 28, 2026 9:04pm

github-actions · 2026-04-27T18:20:47Z

📊 Benchmark Results

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

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	0.041s (-8.1% 🟢)	1.005s (~)	0.964s	10	1.00x
💻 Local	Next.js (Turbopack)	0.041s	1.005s	0.965s	10	1.00x
💻 Local	Nitro	0.044s (+1.4%)	1.005s (~)	0.961s	10	1.07x
🐘 Postgres	Next.js (Turbopack)	0.057s	1.009s	0.952s	10	1.41x
🐘 Postgres	Express	0.062s (+6.6% 🔺)	1.009s (~)	0.947s	10	1.52x
🐘 Postgres	Nitro	0.064s (-32.4% 🟢)	1.012s (-3.0%)	0.947s	10	1.58x

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	1.094s	2.006s	0.912s	10	1.00x
💻 Local	Nitro	1.127s (~)	2.006s (~)	0.879s	10	1.03x
💻 Local	Express	1.134s (+0.8%)	2.005s (~)	0.872s	10	1.04x
🐘 Postgres	Next.js (Turbopack)	1.136s	2.011s	0.874s	10	1.04x
🐘 Postgres	Nitro	1.153s (+1.2%)	2.011s (~)	0.858s	10	1.05x
🐘 Postgres	Express	1.157s (+0.9%)	2.008s (~)	0.851s	10	1.06x

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	10.636s	11.023s	0.387s	3	1.00x
🐘 Postgres	Next.js (Turbopack)	10.885s	11.019s	0.134s	3	1.02x
🐘 Postgres	Nitro	10.911s (~)	11.022s (~)	0.111s	3	1.03x
🐘 Postgres	Express	10.924s (~)	11.016s (~)	0.093s	3	1.03x
💻 Local	Nitro	10.934s (~)	11.024s (~)	0.090s	3	1.03x
💻 Local	Express	10.941s (~)	11.023s (~)	0.082s	3	1.03x

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	14.300s	15.029s	0.729s	4	1.00x
🐘 Postgres	Next.js (Turbopack)	14.421s	15.019s	0.597s	4	1.01x
🐘 Postgres	Express	14.498s (-0.6%)	15.018s (~)	0.520s	4	1.01x
🐘 Postgres	Nitro	14.570s (~)	15.023s (~)	0.453s	4	1.02x
💻 Local	Nitro	14.964s (-0.7%)	15.031s (-6.2% 🟢)	0.067s	4	1.05x
💻 Local	Express	14.977s (~)	15.029s (~)	0.053s	4	1.05x

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	13.879s	14.309s	0.430s	7	1.00x
🐘 Postgres	Express	13.951s (~)	14.453s (-1.0%)	0.502s	7	1.01x
🐘 Postgres	Nitro	14.006s (~)	14.453s (+1.0%)	0.447s	7	1.01x
💻 Local	Next.js (Turbopack)	15.028s	15.530s	0.502s	6	1.08x
💻 Local	Express	16.410s (-1.2%)	17.031s (~)	0.621s	6	1.18x
💻 Local	Nitro	16.413s (-2.2%)	17.031s (~)	0.619s	6	1.18x

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.226s	2.010s	0.784s	15	1.00x
🐘 Postgres	Express	1.259s (~)	2.011s (~)	0.752s	15	1.03x
🐘 Postgres	Nitro	1.285s (+0.8%)	2.010s (~)	0.725s	15	1.05x
💻 Local	Next.js (Turbopack)	1.480s	2.006s	0.526s	15	1.21x
💻 Local	Express	1.504s (+1.0%)	2.006s (~)	0.501s	15	1.23x
💻 Local	Nitro	1.506s (-7.7% 🟢)	2.006s (-3.3%)	0.500s	15	1.23x

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.313s (-2.0%)	3.009s (~)	0.695s	10	1.00x
🐘 Postgres	Nitro	2.371s (+0.8%)	3.008s (~)	0.637s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	2.387s	3.009s	0.622s	10	1.03x
💻 Local	Next.js (Turbopack)	2.617s	3.008s	0.391s	10	1.13x
💻 Local	Express	2.788s (-5.6% 🟢)	3.109s (-10.0% 🟢)	0.320s	10	1.21x
💻 Local	Nitro	2.822s (-10.2% 🟢)	3.207s (-17.4% 🟢)	0.386s	10	1.22x

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.462s (-0.7%)	4.010s (~)	0.548s	8	1.00x
🐘 Postgres	Nitro	3.494s (~)	4.011s (~)	0.517s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	3.653s	4.012s	0.358s	8	1.06x
💻 Local	Next.js (Turbopack)	6.818s	7.215s	0.397s	5	1.97x
💻 Local	Nitro	7.789s (-6.7% 🟢)	8.518s (-5.6% 🟢)	0.729s	4	2.25x
💻 Local	Express	7.846s (-5.9% 🟢)	8.520s (-5.6% 🟢)	0.674s	4	2.27x

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.223s	2.010s	0.787s	15	1.00x
🐘 Postgres	Nitro	1.253s (~)	2.008s (~)	0.755s	15	1.02x
🐘 Postgres	Express	1.281s (+1.9%)	2.008s (~)	0.727s	15	1.05x
💻 Local	Express	1.481s (-21.8% 🟢)	2.006s (-15.1% 🟢)	0.525s	15	1.21x
💻 Local	Next.js (Turbopack)	1.500s	2.006s	0.506s	15	1.23x
💻 Local	Nitro	1.534s (-17.8% 🟢)	2.006s (-14.3% 🟢)	0.472s	15	1.25x

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.343s (~)	3.008s (~)	0.665s	10	1.00x
🐘 Postgres	Nitro	2.356s (+0.7%)	3.011s (~)	0.655s	10	1.01x
🐘 Postgres	Next.js (Turbopack)	2.397s	3.009s	0.612s	10	1.02x
💻 Local	Next.js (Turbopack)	2.792s	3.007s	0.214s	10	1.19x
💻 Local	Express	2.856s (-8.8% 🟢)	3.007s (-20.1% 🟢)	0.151s	10	1.22x
💻 Local	Nitro	2.971s (-3.1%)	3.452s (-11.2% 🟢)	0.481s	9	1.27x

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.465s (-1.0%)	4.011s (~)	0.546s	8	1.00x
🐘 Postgres	Nitro	3.505s (+0.7%)	4.010s (~)	0.505s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	3.621s	4.010s	0.389s	8	1.05x
💻 Local	Next.js (Turbopack)	7.059s	7.770s	0.710s	4	2.04x
💻 Local	Nitro	8.118s (-11.2% 🟢)	8.522s (-15.0% 🟢)	0.404s	4	2.34x
💻 Local	Express	8.395s (-4.6%)	9.021s (-2.7%)	0.626s	4	2.42x

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.699s	1.004s	0.305s	60	1.00x
🐘 Postgres	Next.js (Turbopack)	0.763s	1.006s	0.243s	60	1.09x
🐘 Postgres	Express	0.800s (-4.7%)	1.006s (-1.7%)	0.206s	60	1.14x
🐘 Postgres	Nitro	0.837s (+2.0%)	1.006s (~)	0.170s	60	1.20x
💻 Local	Nitro	1.011s (+3.1%)	1.505s (+37.6% 🔺)	0.494s	40	1.45x
💻 Local	Express	1.038s (+5.5% 🔺)	2.006s (+86.4% 🔺)	0.967s	30	1.49x

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.893s (-4.2%)	2.052s (-9.1% 🟢)	0.159s	44	1.00x
🐘 Postgres	Next.js (Turbopack)	1.954s	2.174s	0.220s	42	1.03x
🐘 Postgres	Nitro	2.047s (+6.2% 🔺)	2.656s (+26.4% 🔺)	0.608s	34	1.08x
💻 Local	Next.js (Turbopack)	2.311s	3.008s	0.697s	30	1.22x
💻 Local	Nitro	3.029s (~)	3.729s (-0.8%)	0.700s	25	1.60x
💻 Local	Express	3.052s (+1.2%)	3.922s (+9.4% 🔺)	0.870s	23	1.61x

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	3.781s	4.010s	0.229s	30	1.00x
🐘 Postgres	Express	3.873s (-2.9%)	4.147s (-5.1% 🟢)	0.274s	29	1.02x
🐘 Postgres	Nitro	4.061s (-1.0%)	4.665s (+1.3%)	0.604s	26	1.07x
💻 Local	Next.js (Turbopack)	7.373s	8.016s	0.643s	15	1.95x
💻 Local	Nitro	9.010s (-3.1%)	9.479s (-5.4% 🟢)	0.468s	13	2.38x
💻 Local	Express	9.018s (-2.1%)	9.402s (-6.1% 🟢)	0.385s	13	2.38x

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.254s	1.007s	0.753s	60	1.00x
🐘 Postgres	Express	0.283s (~)	1.007s (~)	0.724s	60	1.11x
🐘 Postgres	Nitro	0.284s (~)	1.007s (~)	0.723s	60	1.12x
💻 Local	Express	0.566s (+1.0%)	1.004s (~)	0.438s	60	2.23x
💻 Local	Nitro	0.572s (-5.3% 🟢)	1.004s (-1.7%)	0.432s	60	2.25x
💻 Local	Next.js (Turbopack)	0.628s	1.094s	0.466s	56	2.47x

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.480s	1.006s	0.526s	90	1.00x
🐘 Postgres	Express	0.503s (-1.3%)	1.007s (~)	0.504s	90	1.05x
🐘 Postgres	Nitro	0.523s (+5.3% 🔺)	1.007s (~)	0.484s	90	1.09x
💻 Local	Nitro	2.352s (-7.3% 🟢)	3.009s (~)	0.657s	30	4.89x
💻 Local	Express	2.366s (-5.8% 🟢)	3.009s (~)	0.642s	30	4.93x
💻 Local	Next.js (Turbopack)	2.498s	3.008s	0.510s	30	5.20x

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.763s	1.006s	0.244s	120	1.00x
🐘 Postgres	Express	0.808s (-1.4%)	1.016s (~)	0.209s	119	1.06x
🐘 Postgres	Nitro	0.809s (+2.4%)	1.009s (~)	0.200s	119	1.06x
💻 Local	Next.js (Turbopack)	9.578s	10.271s	0.693s	12	12.56x
💻 Local	Express	10.413s (-6.9% 🟢)	11.031s (-7.6% 🟢)	0.618s	11	13.66x
💻 Local	Nitro	10.453s (-6.6% 🟢)	11.029s (-5.4% 🟢)	0.576s	11	13.71x

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.146s	1.003s	0.010s	1.016s	0.870s	10	1.00x
🐘 Postgres	Next.js (Turbopack)	0.197s	1.000s	0.002s	1.010s	0.813s	10	1.35x
💻 Local	Nitro	0.205s (-4.0%)	1.004s (~)	0.010s (-23.2% 🟢)	1.016s (~)	0.811s	10	1.41x
💻 Local	Express	0.206s (+3.5%)	1.004s (~)	0.010s (-17.4% 🟢)	1.016s (~)	0.810s	10	1.41x
🐘 Postgres	Express	0.208s (+1.4%)	0.991s (-0.8%)	0.001s (-18.8% 🟢)	1.009s (~)	0.801s	10	1.42x
🐘 Postgres	Nitro	0.217s (+5.7% 🔺)	0.996s (~)	0.001s (-13.3% 🟢)	1.010s (~)	0.794s	10	1.48x

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.590s	1.010s	0.009s	1.023s	0.432s	59	1.00x
🐘 Postgres	Next.js (Turbopack)	0.610s	1.009s	0.006s	1.024s	0.413s	59	1.03x
🐘 Postgres	Express	0.613s (-2.7%)	1.021s (+1.4%)	0.004s (-2.3%)	1.038s (+1.5%)	0.425s	58	1.04x
🐘 Postgres	Nitro	0.627s (~)	1.021s (+1.4%)	0.004s (+2.1%)	1.040s (+1.7%)	0.413s	58	1.06x
💻 Local	Nitro	0.761s (-9.2% 🟢)	1.013s (~)	0.009s (~)	1.024s (-8.2% 🟢)	0.263s	59	1.29x
💻 Local	Express	0.768s (+1.4%)	1.013s (-1.6%)	0.009s (-4.2%)	1.024s (-1.6%)	0.256s	59	1.30x

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.906s	1.133s	0.000s	1.142s	0.235s	53	1.00x
🐘 Postgres	Express	0.952s (-0.9%)	1.169s (-8.5% 🟢)	0.000s (-100.0% 🟢)	1.184s (-9.4% 🟢)	0.232s	51	1.05x
🐘 Postgres	Nitro	0.969s (~)	1.293s (+3.6%)	0.000s (+2.1%)	1.306s (+3.8%)	0.337s	47	1.07x
💻 Local	Next.js (Turbopack)	1.221s	2.018s	0.000s	2.020s	0.799s	30	1.35x
💻 Local	Nitro	1.229s (+0.5%)	2.021s (~)	0.000s (+233.3% 🔺)	2.023s (~)	0.794s	30	1.36x
💻 Local	Express	1.230s (~)	2.021s (~)	0.000s (+10.0% 🔺)	2.023s (~)	0.793s	30	1.36x

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.703s (-3.9%)	2.097s (-3.7%)	0.000s (NaN%)	2.112s (-3.9%)	0.409s	29	1.00x
🐘 Postgres	Nitro	1.814s (+1.3%)	2.140s (~)	0.000s (-100.0% 🟢)	2.153s (-1.0%)	0.339s	28	1.07x
🐘 Postgres	Next.js (Turbopack)	1.857s	2.182s	0.000s	2.189s	0.332s	28	1.09x
💻 Local	Express	3.321s (-4.2%)	3.973s (-1.5%)	0.001s (-29.7% 🟢)	3.977s (-1.5%)	0.656s	16	1.95x
💻 Local	Nitro	3.495s (+3.2%)	4.033s (~)	0.001s (+25.0% 🔺)	4.037s (~)	0.542s	15	2.05x
💻 Local	Next.js (Turbopack)	3.598s	4.097s	0.001s	4.101s	0.503s	15	2.11x

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Next.js (Turbopack)	16/21
🐘 Postgres	Next.js (Turbopack)	15/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	18/21
Next.js (Turbopack)	🐘 Postgres	14/21
Nitro	🐘 Postgres	18/21

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)

📋 View full workflow run

github-actions · 2026-04-27T18:20:47Z

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Skipped	Total
✅ ▲ Vercel Production	978	67	1045
✅ 💻 Local Development	1054	86	1140
✅ 📦 Local Production	1054	86	1140
✅ 🐘 Local Postgres	1054	86	1140
✅ 🪟 Windows	95	0	95
✅ 📋 Other	267	18	285
Total	4502	343	4845

Details by Category

✅ ▲ Vercel Production

App	Passed	Skipped
✅ astro	88	7
✅ example	88	7
✅ express	88	7
✅ fastify	88	7
✅ hono	88	7
✅ nextjs-turbopack	93	2
✅ nextjs-webpack	93	2
✅ nitro	88	7
✅ nuxt	88	7
✅ sveltekit	88	7
✅ vite	88	7

✅ 💻 Local Development

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	95	0	0

✅ 📋 Other

App	Passed	Skipped
✅ e2e-local-dev-nest-stable	89	6
✅ e2e-local-postgres-nest-stable	89	6
✅ e2e-local-prod-nest-stable	89	6

📋 View full workflow run

VaguelySerious · 2026-04-27T19:09:17Z

seems to fail CI e2e tests btw

VaguelySerious

AI review: no blocking issues

ijjk · 2026-04-27T19:30:09Z

Checked the failures. They look unrelated to this change: the Next canary jobs fail during install because @next/env@16.3.0-canary.3 is not available while canary points at 16.3.0-canary.2, and the docs smoke failure is a Vercel API 403 invalidToken. Stable Next jobs passed.

janory · 2026-04-28T07:56:57Z

+ return this.resolvePath(
+ '.vercel/output/diagnostics/workflows-manifest.json'
+ );


We should only ever write to this dir, if it's a prebuilt build. Is it what the if condition checks?

Why would we only want for prebuilt we always want this included in diagnostics for debugging same as the other stuff we output to the diagnostics for Next.js builds.

ijjk · 2026-04-27T18:20:37Z

Summary

write Next.js workflow diagnostics manifests to the configured Next dist dir under diagnostics/
keep .vercel/output/diagnostics as the fallback only for the Vercel Build Output API builder
update unit/e2e expectations and add a changeset

x-ref: slack thread

Tests

corepack pnpm --filter @workflow/builders build
corepack pnpm --filter @workflow/next build
corepack pnpm --filter @workflow/builders exec vitest run src/get-input-files.test.ts
corepack pnpm exec vitest run packages/next/src/index.test.ts
corepack pnpm changeset status
git diff --check

changeset-bot · 2026-04-27T18:20:41Z

🦋 Changeset detected

Latest commit: 5417b28

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

This PR includes changesets to release 17 packages

Name	Type
@workflow/builders	Patch
@workflow/next	Patch
@workflow/astro	Patch
@workflow/cli	Patch
@workflow/nest	Patch
@workflow/nitro	Patch
@workflow/rollup	Patch
@workflow/sveltekit	Patch
@workflow/vite	Patch
@workflow/vitest	Patch
workflow	Patch
@workflow/world-testing	Patch
@workflow/nuxt	Patch
@workflow/ai	Patch
@workflow/core	Patch
@workflow/web-shared	Patch
@workflow/web	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

vercel · 2026-04-27T18:20:43Z

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

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	Apr 28, 2026 9:04pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	Apr 28, 2026 9:04pm
example-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-astro-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-express-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-fastify-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-hono-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-nitro-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-nuxt-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-sveltekit-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-vite-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workflow-docs	Ready	Preview, Comment, Open in v0	Apr 28, 2026 9:04pm
workflow-swc-playground	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workflow-web	Ready	Preview, Comment	Apr 28, 2026 9:04pm

github-actions · 2026-04-27T18:20:47Z

📊 Benchmark Results

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

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	0.041s (-8.1% 🟢)	1.005s (~)	0.964s	10	1.00x
💻 Local	Next.js (Turbopack)	0.041s	1.005s	0.965s	10	1.00x
💻 Local	Nitro	0.044s (+1.4%)	1.005s (~)	0.961s	10	1.07x
🐘 Postgres	Next.js (Turbopack)	0.057s	1.009s	0.952s	10	1.41x
🐘 Postgres	Express	0.062s (+6.6% 🔺)	1.009s (~)	0.947s	10	1.52x
🐘 Postgres	Nitro	0.064s (-32.4% 🟢)	1.012s (-3.0%)	0.947s	10	1.58x

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	1.094s	2.006s	0.912s	10	1.00x
💻 Local	Nitro	1.127s (~)	2.006s (~)	0.879s	10	1.03x
💻 Local	Express	1.134s (+0.8%)	2.005s (~)	0.872s	10	1.04x
🐘 Postgres	Next.js (Turbopack)	1.136s	2.011s	0.874s	10	1.04x
🐘 Postgres	Nitro	1.153s (+1.2%)	2.011s (~)	0.858s	10	1.05x
🐘 Postgres	Express	1.157s (+0.9%)	2.008s (~)	0.851s	10	1.06x

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	10.636s	11.023s	0.387s	3	1.00x
🐘 Postgres	Next.js (Turbopack)	10.885s	11.019s	0.134s	3	1.02x
🐘 Postgres	Nitro	10.911s (~)	11.022s (~)	0.111s	3	1.03x
🐘 Postgres	Express	10.924s (~)	11.016s (~)	0.093s	3	1.03x
💻 Local	Nitro	10.934s (~)	11.024s (~)	0.090s	3	1.03x
💻 Local	Express	10.941s (~)	11.023s (~)	0.082s	3	1.03x

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	14.300s	15.029s	0.729s	4	1.00x
🐘 Postgres	Next.js (Turbopack)	14.421s	15.019s	0.597s	4	1.01x
🐘 Postgres	Express	14.498s (-0.6%)	15.018s (~)	0.520s	4	1.01x
🐘 Postgres	Nitro	14.570s (~)	15.023s (~)	0.453s	4	1.02x
💻 Local	Nitro	14.964s (-0.7%)	15.031s (-6.2% 🟢)	0.067s	4	1.05x
💻 Local	Express	14.977s (~)	15.029s (~)	0.053s	4	1.05x

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	13.879s	14.309s	0.430s	7	1.00x
🐘 Postgres	Express	13.951s (~)	14.453s (-1.0%)	0.502s	7	1.01x
🐘 Postgres	Nitro	14.006s (~)	14.453s (+1.0%)	0.447s	7	1.01x
💻 Local	Next.js (Turbopack)	15.028s	15.530s	0.502s	6	1.08x
💻 Local	Express	16.410s (-1.2%)	17.031s (~)	0.621s	6	1.18x
💻 Local	Nitro	16.413s (-2.2%)	17.031s (~)	0.619s	6	1.18x

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.226s	2.010s	0.784s	15	1.00x
🐘 Postgres	Express	1.259s (~)	2.011s (~)	0.752s	15	1.03x
🐘 Postgres	Nitro	1.285s (+0.8%)	2.010s (~)	0.725s	15	1.05x
💻 Local	Next.js (Turbopack)	1.480s	2.006s	0.526s	15	1.21x
💻 Local	Express	1.504s (+1.0%)	2.006s (~)	0.501s	15	1.23x
💻 Local	Nitro	1.506s (-7.7% 🟢)	2.006s (-3.3%)	0.500s	15	1.23x

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.313s (-2.0%)	3.009s (~)	0.695s	10	1.00x
🐘 Postgres	Nitro	2.371s (+0.8%)	3.008s (~)	0.637s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	2.387s	3.009s	0.622s	10	1.03x
💻 Local	Next.js (Turbopack)	2.617s	3.008s	0.391s	10	1.13x
💻 Local	Express	2.788s (-5.6% 🟢)	3.109s (-10.0% 🟢)	0.320s	10	1.21x
💻 Local	Nitro	2.822s (-10.2% 🟢)	3.207s (-17.4% 🟢)	0.386s	10	1.22x

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.462s (-0.7%)	4.010s (~)	0.548s	8	1.00x
🐘 Postgres	Nitro	3.494s (~)	4.011s (~)	0.517s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	3.653s	4.012s	0.358s	8	1.06x
💻 Local	Next.js (Turbopack)	6.818s	7.215s	0.397s	5	1.97x
💻 Local	Nitro	7.789s (-6.7% 🟢)	8.518s (-5.6% 🟢)	0.729s	4	2.25x
💻 Local	Express	7.846s (-5.9% 🟢)	8.520s (-5.6% 🟢)	0.674s	4	2.27x

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.223s	2.010s	0.787s	15	1.00x
🐘 Postgres	Nitro	1.253s (~)	2.008s (~)	0.755s	15	1.02x
🐘 Postgres	Express	1.281s (+1.9%)	2.008s (~)	0.727s	15	1.05x
💻 Local	Express	1.481s (-21.8% 🟢)	2.006s (-15.1% 🟢)	0.525s	15	1.21x
💻 Local	Next.js (Turbopack)	1.500s	2.006s	0.506s	15	1.23x
💻 Local	Nitro	1.534s (-17.8% 🟢)	2.006s (-14.3% 🟢)	0.472s	15	1.25x

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.343s (~)	3.008s (~)	0.665s	10	1.00x
🐘 Postgres	Nitro	2.356s (+0.7%)	3.011s (~)	0.655s	10	1.01x
🐘 Postgres	Next.js (Turbopack)	2.397s	3.009s	0.612s	10	1.02x
💻 Local	Next.js (Turbopack)	2.792s	3.007s	0.214s	10	1.19x
💻 Local	Express	2.856s (-8.8% 🟢)	3.007s (-20.1% 🟢)	0.151s	10	1.22x
💻 Local	Nitro	2.971s (-3.1%)	3.452s (-11.2% 🟢)	0.481s	9	1.27x

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.465s (-1.0%)	4.011s (~)	0.546s	8	1.00x
🐘 Postgres	Nitro	3.505s (+0.7%)	4.010s (~)	0.505s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	3.621s	4.010s	0.389s	8	1.05x
💻 Local	Next.js (Turbopack)	7.059s	7.770s	0.710s	4	2.04x
💻 Local	Nitro	8.118s (-11.2% 🟢)	8.522s (-15.0% 🟢)	0.404s	4	2.34x
💻 Local	Express	8.395s (-4.6%)	9.021s (-2.7%)	0.626s	4	2.42x

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.699s	1.004s	0.305s	60	1.00x
🐘 Postgres	Next.js (Turbopack)	0.763s	1.006s	0.243s	60	1.09x
🐘 Postgres	Express	0.800s (-4.7%)	1.006s (-1.7%)	0.206s	60	1.14x
🐘 Postgres	Nitro	0.837s (+2.0%)	1.006s (~)	0.170s	60	1.20x
💻 Local	Nitro	1.011s (+3.1%)	1.505s (+37.6% 🔺)	0.494s	40	1.45x
💻 Local	Express	1.038s (+5.5% 🔺)	2.006s (+86.4% 🔺)	0.967s	30	1.49x

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.893s (-4.2%)	2.052s (-9.1% 🟢)	0.159s	44	1.00x
🐘 Postgres	Next.js (Turbopack)	1.954s	2.174s	0.220s	42	1.03x
🐘 Postgres	Nitro	2.047s (+6.2% 🔺)	2.656s (+26.4% 🔺)	0.608s	34	1.08x
💻 Local	Next.js (Turbopack)	2.311s	3.008s	0.697s	30	1.22x
💻 Local	Nitro	3.029s (~)	3.729s (-0.8%)	0.700s	25	1.60x
💻 Local	Express	3.052s (+1.2%)	3.922s (+9.4% 🔺)	0.870s	23	1.61x

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	3.781s	4.010s	0.229s	30	1.00x
🐘 Postgres	Express	3.873s (-2.9%)	4.147s (-5.1% 🟢)	0.274s	29	1.02x
🐘 Postgres	Nitro	4.061s (-1.0%)	4.665s (+1.3%)	0.604s	26	1.07x
💻 Local	Next.js (Turbopack)	7.373s	8.016s	0.643s	15	1.95x
💻 Local	Nitro	9.010s (-3.1%)	9.479s (-5.4% 🟢)	0.468s	13	2.38x
💻 Local	Express	9.018s (-2.1%)	9.402s (-6.1% 🟢)	0.385s	13	2.38x

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.254s	1.007s	0.753s	60	1.00x
🐘 Postgres	Express	0.283s (~)	1.007s (~)	0.724s	60	1.11x
🐘 Postgres	Nitro	0.284s (~)	1.007s (~)	0.723s	60	1.12x
💻 Local	Express	0.566s (+1.0%)	1.004s (~)	0.438s	60	2.23x
💻 Local	Nitro	0.572s (-5.3% 🟢)	1.004s (-1.7%)	0.432s	60	2.25x
💻 Local	Next.js (Turbopack)	0.628s	1.094s	0.466s	56	2.47x

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.480s	1.006s	0.526s	90	1.00x
🐘 Postgres	Express	0.503s (-1.3%)	1.007s (~)	0.504s	90	1.05x
🐘 Postgres	Nitro	0.523s (+5.3% 🔺)	1.007s (~)	0.484s	90	1.09x
💻 Local	Nitro	2.352s (-7.3% 🟢)	3.009s (~)	0.657s	30	4.89x
💻 Local	Express	2.366s (-5.8% 🟢)	3.009s (~)	0.642s	30	4.93x
💻 Local	Next.js (Turbopack)	2.498s	3.008s	0.510s	30	5.20x

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.763s	1.006s	0.244s	120	1.00x
🐘 Postgres	Express	0.808s (-1.4%)	1.016s (~)	0.209s	119	1.06x
🐘 Postgres	Nitro	0.809s (+2.4%)	1.009s (~)	0.200s	119	1.06x
💻 Local	Next.js (Turbopack)	9.578s	10.271s	0.693s	12	12.56x
💻 Local	Express	10.413s (-6.9% 🟢)	11.031s (-7.6% 🟢)	0.618s	11	13.66x
💻 Local	Nitro	10.453s (-6.6% 🟢)	11.029s (-5.4% 🟢)	0.576s	11	13.71x

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.146s	1.003s	0.010s	1.016s	0.870s	10	1.00x
🐘 Postgres	Next.js (Turbopack)	0.197s	1.000s	0.002s	1.010s	0.813s	10	1.35x
💻 Local	Nitro	0.205s (-4.0%)	1.004s (~)	0.010s (-23.2% 🟢)	1.016s (~)	0.811s	10	1.41x
💻 Local	Express	0.206s (+3.5%)	1.004s (~)	0.010s (-17.4% 🟢)	1.016s (~)	0.810s	10	1.41x
🐘 Postgres	Express	0.208s (+1.4%)	0.991s (-0.8%)	0.001s (-18.8% 🟢)	1.009s (~)	0.801s	10	1.42x
🐘 Postgres	Nitro	0.217s (+5.7% 🔺)	0.996s (~)	0.001s (-13.3% 🟢)	1.010s (~)	0.794s	10	1.48x

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.590s	1.010s	0.009s	1.023s	0.432s	59	1.00x
🐘 Postgres	Next.js (Turbopack)	0.610s	1.009s	0.006s	1.024s	0.413s	59	1.03x
🐘 Postgres	Express	0.613s (-2.7%)	1.021s (+1.4%)	0.004s (-2.3%)	1.038s (+1.5%)	0.425s	58	1.04x
🐘 Postgres	Nitro	0.627s (~)	1.021s (+1.4%)	0.004s (+2.1%)	1.040s (+1.7%)	0.413s	58	1.06x
💻 Local	Nitro	0.761s (-9.2% 🟢)	1.013s (~)	0.009s (~)	1.024s (-8.2% 🟢)	0.263s	59	1.29x
💻 Local	Express	0.768s (+1.4%)	1.013s (-1.6%)	0.009s (-4.2%)	1.024s (-1.6%)	0.256s	59	1.30x

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.906s	1.133s	0.000s	1.142s	0.235s	53	1.00x
🐘 Postgres	Express	0.952s (-0.9%)	1.169s (-8.5% 🟢)	0.000s (-100.0% 🟢)	1.184s (-9.4% 🟢)	0.232s	51	1.05x
🐘 Postgres	Nitro	0.969s (~)	1.293s (+3.6%)	0.000s (+2.1%)	1.306s (+3.8%)	0.337s	47	1.07x
💻 Local	Next.js (Turbopack)	1.221s	2.018s	0.000s	2.020s	0.799s	30	1.35x
💻 Local	Nitro	1.229s (+0.5%)	2.021s (~)	0.000s (+233.3% 🔺)	2.023s (~)	0.794s	30	1.36x
💻 Local	Express	1.230s (~)	2.021s (~)	0.000s (+10.0% 🔺)	2.023s (~)	0.793s	30	1.36x

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.703s (-3.9%)	2.097s (-3.7%)	0.000s (NaN%)	2.112s (-3.9%)	0.409s	29	1.00x
🐘 Postgres	Nitro	1.814s (+1.3%)	2.140s (~)	0.000s (-100.0% 🟢)	2.153s (-1.0%)	0.339s	28	1.07x
🐘 Postgres	Next.js (Turbopack)	1.857s	2.182s	0.000s	2.189s	0.332s	28	1.09x
💻 Local	Express	3.321s (-4.2%)	3.973s (-1.5%)	0.001s (-29.7% 🟢)	3.977s (-1.5%)	0.656s	16	1.95x
💻 Local	Nitro	3.495s (+3.2%)	4.033s (~)	0.001s (+25.0% 🔺)	4.037s (~)	0.542s	15	2.05x
💻 Local	Next.js (Turbopack)	3.598s	4.097s	0.001s	4.101s	0.503s	15	2.11x

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Next.js (Turbopack)	16/21
🐘 Postgres	Next.js (Turbopack)	15/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	18/21
Next.js (Turbopack)	🐘 Postgres	14/21
Nitro	🐘 Postgres	18/21

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)

📋 View full workflow run

github-actions · 2026-04-27T18:20:47Z

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Skipped	Total
✅ ▲ Vercel Production	978	67	1045
✅ 💻 Local Development	1054	86	1140
✅ 📦 Local Production	1054	86	1140
✅ 🐘 Local Postgres	1054	86	1140
✅ 🪟 Windows	95	0	95
✅ 📋 Other	267	18	285
Total	4502	343	4845

Details by Category

✅ ▲ Vercel Production

App	Passed	Skipped
✅ astro	88	7
✅ example	88	7
✅ express	88	7
✅ fastify	88	7
✅ hono	88	7
✅ nextjs-turbopack	93	2
✅ nextjs-webpack	93	2
✅ nitro	88	7
✅ nuxt	88	7
✅ sveltekit	88	7
✅ vite	88	7

✅ 💻 Local Development

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	95	0	0

✅ 📋 Other

App	Passed	Skipped
✅ e2e-local-dev-nest-stable	89	6
✅ e2e-local-postgres-nest-stable	89	6
✅ e2e-local-prod-nest-stable	89	6

📋 View full workflow run

VaguelySerious · 2026-04-27T19:09:17Z

seems to fail CI e2e tests btw

VaguelySerious

AI review: no blocking issues

ijjk · 2026-04-27T19:30:09Z

Checked the failures. They look unrelated to this change: the Next canary jobs fail during install because @next/env@16.3.0-canary.3 is not available while canary points at 16.3.0-canary.2, and the docs smoke failure is a Vercel API 403 invalidToken. Stable Next jobs passed.

janory · 2026-04-28T07:56:57Z

+ return this.resolvePath(
+ '.vercel/output/diagnostics/workflows-manifest.json'
+ );


We should only ever write to this dir, if it's a prebuilt build. Is it what the if condition checks?

Why would we only want for prebuilt we always want this included in diagnostics for debugging same as the other stuff we output to the diagnostics for Next.js builds.

ijjk · 2026-04-27T18:20:37Z

Summary

write Next.js workflow diagnostics manifests to the configured Next dist dir under diagnostics/
keep .vercel/output/diagnostics as the fallback only for the Vercel Build Output API builder
update unit/e2e expectations and add a changeset

x-ref: slack thread

Tests

corepack pnpm --filter @workflow/builders build
corepack pnpm --filter @workflow/next build
corepack pnpm --filter @workflow/builders exec vitest run src/get-input-files.test.ts
corepack pnpm exec vitest run packages/next/src/index.test.ts
corepack pnpm changeset status
git diff --check

changeset-bot · 2026-04-27T18:20:41Z

🦋 Changeset detected

Latest commit: 5417b28

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

This PR includes changesets to release 17 packages

Name	Type
@workflow/builders	Patch
@workflow/next	Patch
@workflow/astro	Patch
@workflow/cli	Patch
@workflow/nest	Patch
@workflow/nitro	Patch
@workflow/rollup	Patch
@workflow/sveltekit	Patch
@workflow/vite	Patch
@workflow/vitest	Patch
workflow	Patch
@workflow/world-testing	Patch
@workflow/nuxt	Patch
@workflow/ai	Patch
@workflow/core	Patch
@workflow/web-shared	Patch
@workflow/web	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

vercel · 2026-04-27T18:20:43Z

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

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	Apr 28, 2026 9:04pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	Apr 28, 2026 9:04pm
example-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-astro-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-express-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-fastify-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-hono-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-nitro-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-nuxt-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-sveltekit-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-vite-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workflow-docs	Ready	Preview, Comment, Open in v0	Apr 28, 2026 9:04pm
workflow-swc-playground	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workflow-web	Ready	Preview, Comment	Apr 28, 2026 9:04pm

github-actions · 2026-04-27T18:20:47Z

📊 Benchmark Results

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

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	0.041s (-8.1% 🟢)	1.005s (~)	0.964s	10	1.00x
💻 Local	Next.js (Turbopack)	0.041s	1.005s	0.965s	10	1.00x
💻 Local	Nitro	0.044s (+1.4%)	1.005s (~)	0.961s	10	1.07x
🐘 Postgres	Next.js (Turbopack)	0.057s	1.009s	0.952s	10	1.41x
🐘 Postgres	Express	0.062s (+6.6% 🔺)	1.009s (~)	0.947s	10	1.52x
🐘 Postgres	Nitro	0.064s (-32.4% 🟢)	1.012s (-3.0%)	0.947s	10	1.58x

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	1.094s	2.006s	0.912s	10	1.00x
💻 Local	Nitro	1.127s (~)	2.006s (~)	0.879s	10	1.03x
💻 Local	Express	1.134s (+0.8%)	2.005s (~)	0.872s	10	1.04x
🐘 Postgres	Next.js (Turbopack)	1.136s	2.011s	0.874s	10	1.04x
🐘 Postgres	Nitro	1.153s (+1.2%)	2.011s (~)	0.858s	10	1.05x
🐘 Postgres	Express	1.157s (+0.9%)	2.008s (~)	0.851s	10	1.06x

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	10.636s	11.023s	0.387s	3	1.00x
🐘 Postgres	Next.js (Turbopack)	10.885s	11.019s	0.134s	3	1.02x
🐘 Postgres	Nitro	10.911s (~)	11.022s (~)	0.111s	3	1.03x
🐘 Postgres	Express	10.924s (~)	11.016s (~)	0.093s	3	1.03x
💻 Local	Nitro	10.934s (~)	11.024s (~)	0.090s	3	1.03x
💻 Local	Express	10.941s (~)	11.023s (~)	0.082s	3	1.03x

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	14.300s	15.029s	0.729s	4	1.00x
🐘 Postgres	Next.js (Turbopack)	14.421s	15.019s	0.597s	4	1.01x
🐘 Postgres	Express	14.498s (-0.6%)	15.018s (~)	0.520s	4	1.01x
🐘 Postgres	Nitro	14.570s (~)	15.023s (~)	0.453s	4	1.02x
💻 Local	Nitro	14.964s (-0.7%)	15.031s (-6.2% 🟢)	0.067s	4	1.05x
💻 Local	Express	14.977s (~)	15.029s (~)	0.053s	4	1.05x

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	13.879s	14.309s	0.430s	7	1.00x
🐘 Postgres	Express	13.951s (~)	14.453s (-1.0%)	0.502s	7	1.01x
🐘 Postgres	Nitro	14.006s (~)	14.453s (+1.0%)	0.447s	7	1.01x
💻 Local	Next.js (Turbopack)	15.028s	15.530s	0.502s	6	1.08x
💻 Local	Express	16.410s (-1.2%)	17.031s (~)	0.621s	6	1.18x
💻 Local	Nitro	16.413s (-2.2%)	17.031s (~)	0.619s	6	1.18x

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.226s	2.010s	0.784s	15	1.00x
🐘 Postgres	Express	1.259s (~)	2.011s (~)	0.752s	15	1.03x
🐘 Postgres	Nitro	1.285s (+0.8%)	2.010s (~)	0.725s	15	1.05x
💻 Local	Next.js (Turbopack)	1.480s	2.006s	0.526s	15	1.21x
💻 Local	Express	1.504s (+1.0%)	2.006s (~)	0.501s	15	1.23x
💻 Local	Nitro	1.506s (-7.7% 🟢)	2.006s (-3.3%)	0.500s	15	1.23x

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.313s (-2.0%)	3.009s (~)	0.695s	10	1.00x
🐘 Postgres	Nitro	2.371s (+0.8%)	3.008s (~)	0.637s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	2.387s	3.009s	0.622s	10	1.03x
💻 Local	Next.js (Turbopack)	2.617s	3.008s	0.391s	10	1.13x
💻 Local	Express	2.788s (-5.6% 🟢)	3.109s (-10.0% 🟢)	0.320s	10	1.21x
💻 Local	Nitro	2.822s (-10.2% 🟢)	3.207s (-17.4% 🟢)	0.386s	10	1.22x

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.462s (-0.7%)	4.010s (~)	0.548s	8	1.00x
🐘 Postgres	Nitro	3.494s (~)	4.011s (~)	0.517s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	3.653s	4.012s	0.358s	8	1.06x
💻 Local	Next.js (Turbopack)	6.818s	7.215s	0.397s	5	1.97x
💻 Local	Nitro	7.789s (-6.7% 🟢)	8.518s (-5.6% 🟢)	0.729s	4	2.25x
💻 Local	Express	7.846s (-5.9% 🟢)	8.520s (-5.6% 🟢)	0.674s	4	2.27x

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.223s	2.010s	0.787s	15	1.00x
🐘 Postgres	Nitro	1.253s (~)	2.008s (~)	0.755s	15	1.02x
🐘 Postgres	Express	1.281s (+1.9%)	2.008s (~)	0.727s	15	1.05x
💻 Local	Express	1.481s (-21.8% 🟢)	2.006s (-15.1% 🟢)	0.525s	15	1.21x
💻 Local	Next.js (Turbopack)	1.500s	2.006s	0.506s	15	1.23x
💻 Local	Nitro	1.534s (-17.8% 🟢)	2.006s (-14.3% 🟢)	0.472s	15	1.25x

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.343s (~)	3.008s (~)	0.665s	10	1.00x
🐘 Postgres	Nitro	2.356s (+0.7%)	3.011s (~)	0.655s	10	1.01x
🐘 Postgres	Next.js (Turbopack)	2.397s	3.009s	0.612s	10	1.02x
💻 Local	Next.js (Turbopack)	2.792s	3.007s	0.214s	10	1.19x
💻 Local	Express	2.856s (-8.8% 🟢)	3.007s (-20.1% 🟢)	0.151s	10	1.22x
💻 Local	Nitro	2.971s (-3.1%)	3.452s (-11.2% 🟢)	0.481s	9	1.27x

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.465s (-1.0%)	4.011s (~)	0.546s	8	1.00x
🐘 Postgres	Nitro	3.505s (+0.7%)	4.010s (~)	0.505s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	3.621s	4.010s	0.389s	8	1.05x
💻 Local	Next.js (Turbopack)	7.059s	7.770s	0.710s	4	2.04x
💻 Local	Nitro	8.118s (-11.2% 🟢)	8.522s (-15.0% 🟢)	0.404s	4	2.34x
💻 Local	Express	8.395s (-4.6%)	9.021s (-2.7%)	0.626s	4	2.42x

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.699s	1.004s	0.305s	60	1.00x
🐘 Postgres	Next.js (Turbopack)	0.763s	1.006s	0.243s	60	1.09x
🐘 Postgres	Express	0.800s (-4.7%)	1.006s (-1.7%)	0.206s	60	1.14x
🐘 Postgres	Nitro	0.837s (+2.0%)	1.006s (~)	0.170s	60	1.20x
💻 Local	Nitro	1.011s (+3.1%)	1.505s (+37.6% 🔺)	0.494s	40	1.45x
💻 Local	Express	1.038s (+5.5% 🔺)	2.006s (+86.4% 🔺)	0.967s	30	1.49x

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.893s (-4.2%)	2.052s (-9.1% 🟢)	0.159s	44	1.00x
🐘 Postgres	Next.js (Turbopack)	1.954s	2.174s	0.220s	42	1.03x
🐘 Postgres	Nitro	2.047s (+6.2% 🔺)	2.656s (+26.4% 🔺)	0.608s	34	1.08x
💻 Local	Next.js (Turbopack)	2.311s	3.008s	0.697s	30	1.22x
💻 Local	Nitro	3.029s (~)	3.729s (-0.8%)	0.700s	25	1.60x
💻 Local	Express	3.052s (+1.2%)	3.922s (+9.4% 🔺)	0.870s	23	1.61x

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	3.781s	4.010s	0.229s	30	1.00x
🐘 Postgres	Express	3.873s (-2.9%)	4.147s (-5.1% 🟢)	0.274s	29	1.02x
🐘 Postgres	Nitro	4.061s (-1.0%)	4.665s (+1.3%)	0.604s	26	1.07x
💻 Local	Next.js (Turbopack)	7.373s	8.016s	0.643s	15	1.95x
💻 Local	Nitro	9.010s (-3.1%)	9.479s (-5.4% 🟢)	0.468s	13	2.38x
💻 Local	Express	9.018s (-2.1%)	9.402s (-6.1% 🟢)	0.385s	13	2.38x

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.254s	1.007s	0.753s	60	1.00x
🐘 Postgres	Express	0.283s (~)	1.007s (~)	0.724s	60	1.11x
🐘 Postgres	Nitro	0.284s (~)	1.007s (~)	0.723s	60	1.12x
💻 Local	Express	0.566s (+1.0%)	1.004s (~)	0.438s	60	2.23x
💻 Local	Nitro	0.572s (-5.3% 🟢)	1.004s (-1.7%)	0.432s	60	2.25x
💻 Local	Next.js (Turbopack)	0.628s	1.094s	0.466s	56	2.47x

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.480s	1.006s	0.526s	90	1.00x
🐘 Postgres	Express	0.503s (-1.3%)	1.007s (~)	0.504s	90	1.05x
🐘 Postgres	Nitro	0.523s (+5.3% 🔺)	1.007s (~)	0.484s	90	1.09x
💻 Local	Nitro	2.352s (-7.3% 🟢)	3.009s (~)	0.657s	30	4.89x
💻 Local	Express	2.366s (-5.8% 🟢)	3.009s (~)	0.642s	30	4.93x
💻 Local	Next.js (Turbopack)	2.498s	3.008s	0.510s	30	5.20x

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.763s	1.006s	0.244s	120	1.00x
🐘 Postgres	Express	0.808s (-1.4%)	1.016s (~)	0.209s	119	1.06x
🐘 Postgres	Nitro	0.809s (+2.4%)	1.009s (~)	0.200s	119	1.06x
💻 Local	Next.js (Turbopack)	9.578s	10.271s	0.693s	12	12.56x
💻 Local	Express	10.413s (-6.9% 🟢)	11.031s (-7.6% 🟢)	0.618s	11	13.66x
💻 Local	Nitro	10.453s (-6.6% 🟢)	11.029s (-5.4% 🟢)	0.576s	11	13.71x

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.146s	1.003s	0.010s	1.016s	0.870s	10	1.00x
🐘 Postgres	Next.js (Turbopack)	0.197s	1.000s	0.002s	1.010s	0.813s	10	1.35x
💻 Local	Nitro	0.205s (-4.0%)	1.004s (~)	0.010s (-23.2% 🟢)	1.016s (~)	0.811s	10	1.41x
💻 Local	Express	0.206s (+3.5%)	1.004s (~)	0.010s (-17.4% 🟢)	1.016s (~)	0.810s	10	1.41x
🐘 Postgres	Express	0.208s (+1.4%)	0.991s (-0.8%)	0.001s (-18.8% 🟢)	1.009s (~)	0.801s	10	1.42x
🐘 Postgres	Nitro	0.217s (+5.7% 🔺)	0.996s (~)	0.001s (-13.3% 🟢)	1.010s (~)	0.794s	10	1.48x

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.590s	1.010s	0.009s	1.023s	0.432s	59	1.00x
🐘 Postgres	Next.js (Turbopack)	0.610s	1.009s	0.006s	1.024s	0.413s	59	1.03x
🐘 Postgres	Express	0.613s (-2.7%)	1.021s (+1.4%)	0.004s (-2.3%)	1.038s (+1.5%)	0.425s	58	1.04x
🐘 Postgres	Nitro	0.627s (~)	1.021s (+1.4%)	0.004s (+2.1%)	1.040s (+1.7%)	0.413s	58	1.06x
💻 Local	Nitro	0.761s (-9.2% 🟢)	1.013s (~)	0.009s (~)	1.024s (-8.2% 🟢)	0.263s	59	1.29x
💻 Local	Express	0.768s (+1.4%)	1.013s (-1.6%)	0.009s (-4.2%)	1.024s (-1.6%)	0.256s	59	1.30x

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.906s	1.133s	0.000s	1.142s	0.235s	53	1.00x
🐘 Postgres	Express	0.952s (-0.9%)	1.169s (-8.5% 🟢)	0.000s (-100.0% 🟢)	1.184s (-9.4% 🟢)	0.232s	51	1.05x
🐘 Postgres	Nitro	0.969s (~)	1.293s (+3.6%)	0.000s (+2.1%)	1.306s (+3.8%)	0.337s	47	1.07x
💻 Local	Next.js (Turbopack)	1.221s	2.018s	0.000s	2.020s	0.799s	30	1.35x
💻 Local	Nitro	1.229s (+0.5%)	2.021s (~)	0.000s (+233.3% 🔺)	2.023s (~)	0.794s	30	1.36x
💻 Local	Express	1.230s (~)	2.021s (~)	0.000s (+10.0% 🔺)	2.023s (~)	0.793s	30	1.36x

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.703s (-3.9%)	2.097s (-3.7%)	0.000s (NaN%)	2.112s (-3.9%)	0.409s	29	1.00x
🐘 Postgres	Nitro	1.814s (+1.3%)	2.140s (~)	0.000s (-100.0% 🟢)	2.153s (-1.0%)	0.339s	28	1.07x
🐘 Postgres	Next.js (Turbopack)	1.857s	2.182s	0.000s	2.189s	0.332s	28	1.09x
💻 Local	Express	3.321s (-4.2%)	3.973s (-1.5%)	0.001s (-29.7% 🟢)	3.977s (-1.5%)	0.656s	16	1.95x
💻 Local	Nitro	3.495s (+3.2%)	4.033s (~)	0.001s (+25.0% 🔺)	4.037s (~)	0.542s	15	2.05x
💻 Local	Next.js (Turbopack)	3.598s	4.097s	0.001s	4.101s	0.503s	15	2.11x

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Next.js (Turbopack)	16/21
🐘 Postgres	Next.js (Turbopack)	15/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	18/21
Next.js (Turbopack)	🐘 Postgres	14/21
Nitro	🐘 Postgres	18/21

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)

📋 View full workflow run

github-actions · 2026-04-27T18:20:47Z

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Skipped	Total
✅ ▲ Vercel Production	978	67	1045
✅ 💻 Local Development	1054	86	1140
✅ 📦 Local Production	1054	86	1140
✅ 🐘 Local Postgres	1054	86	1140
✅ 🪟 Windows	95	0	95
✅ 📋 Other	267	18	285
Total	4502	343	4845

Details by Category

✅ ▲ Vercel Production

App	Passed	Skipped
✅ astro	88	7
✅ example	88	7
✅ express	88	7
✅ fastify	88	7
✅ hono	88	7
✅ nextjs-turbopack	93	2
✅ nextjs-webpack	93	2
✅ nitro	88	7
✅ nuxt	88	7
✅ sveltekit	88	7
✅ vite	88	7

✅ 💻 Local Development

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	95	0	0

✅ 📋 Other

App	Passed	Skipped
✅ e2e-local-dev-nest-stable	89	6
✅ e2e-local-postgres-nest-stable	89	6
✅ e2e-local-prod-nest-stable	89	6

📋 View full workflow run

VaguelySerious · 2026-04-27T19:09:17Z

seems to fail CI e2e tests btw

VaguelySerious

AI review: no blocking issues

ijjk · 2026-04-27T19:30:09Z

Checked the failures. They look unrelated to this change: the Next canary jobs fail during install because @next/env@16.3.0-canary.3 is not available while canary points at 16.3.0-canary.2, and the docs smoke failure is a Vercel API 403 invalidToken. Stable Next jobs passed.

janory · 2026-04-28T07:56:57Z

+ return this.resolvePath(
+ '.vercel/output/diagnostics/workflows-manifest.json'
+ );


We should only ever write to this dir, if it's a prebuilt build. Is it what the if condition checks?

Why would we only want for prebuilt we always want this included in diagnostics for debugging same as the other stuff we output to the diagnostics for Next.js builds.

ijjk · 2026-04-27T18:20:37Z

Summary

write Next.js workflow diagnostics manifests to the configured Next dist dir under diagnostics/
keep .vercel/output/diagnostics as the fallback only for the Vercel Build Output API builder
update unit/e2e expectations and add a changeset

x-ref: slack thread

Tests

corepack pnpm --filter @workflow/builders build
corepack pnpm --filter @workflow/next build
corepack pnpm --filter @workflow/builders exec vitest run src/get-input-files.test.ts
corepack pnpm exec vitest run packages/next/src/index.test.ts
corepack pnpm changeset status
git diff --check

changeset-bot · 2026-04-27T18:20:41Z

🦋 Changeset detected

Latest commit: 5417b28

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

This PR includes changesets to release 17 packages

Name	Type
@workflow/builders	Patch
@workflow/next	Patch
@workflow/astro	Patch
@workflow/cli	Patch
@workflow/nest	Patch
@workflow/nitro	Patch
@workflow/rollup	Patch
@workflow/sveltekit	Patch
@workflow/vite	Patch
@workflow/vitest	Patch
workflow	Patch
@workflow/world-testing	Patch
@workflow/nuxt	Patch
@workflow/ai	Patch
@workflow/core	Patch
@workflow/web-shared	Patch
@workflow/web	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

vercel · 2026-04-27T18:20:43Z

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

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	Apr 28, 2026 9:04pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	Apr 28, 2026 9:04pm
example-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-astro-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-express-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-fastify-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-hono-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-nitro-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-nuxt-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-sveltekit-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-vite-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workflow-docs	Ready	Preview, Comment, Open in v0	Apr 28, 2026 9:04pm
workflow-swc-playground	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workflow-web	Ready	Preview, Comment	Apr 28, 2026 9:04pm

github-actions · 2026-04-27T18:20:47Z

📊 Benchmark Results

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

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	0.041s (-8.1% 🟢)	1.005s (~)	0.964s	10	1.00x
💻 Local	Next.js (Turbopack)	0.041s	1.005s	0.965s	10	1.00x
💻 Local	Nitro	0.044s (+1.4%)	1.005s (~)	0.961s	10	1.07x
🐘 Postgres	Next.js (Turbopack)	0.057s	1.009s	0.952s	10	1.41x
🐘 Postgres	Express	0.062s (+6.6% 🔺)	1.009s (~)	0.947s	10	1.52x
🐘 Postgres	Nitro	0.064s (-32.4% 🟢)	1.012s (-3.0%)	0.947s	10	1.58x

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	1.094s	2.006s	0.912s	10	1.00x
💻 Local	Nitro	1.127s (~)	2.006s (~)	0.879s	10	1.03x
💻 Local	Express	1.134s (+0.8%)	2.005s (~)	0.872s	10	1.04x
🐘 Postgres	Next.js (Turbopack)	1.136s	2.011s	0.874s	10	1.04x
🐘 Postgres	Nitro	1.153s (+1.2%)	2.011s (~)	0.858s	10	1.05x
🐘 Postgres	Express	1.157s (+0.9%)	2.008s (~)	0.851s	10	1.06x

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	10.636s	11.023s	0.387s	3	1.00x
🐘 Postgres	Next.js (Turbopack)	10.885s	11.019s	0.134s	3	1.02x
🐘 Postgres	Nitro	10.911s (~)	11.022s (~)	0.111s	3	1.03x
🐘 Postgres	Express	10.924s (~)	11.016s (~)	0.093s	3	1.03x
💻 Local	Nitro	10.934s (~)	11.024s (~)	0.090s	3	1.03x
💻 Local	Express	10.941s (~)	11.023s (~)	0.082s	3	1.03x

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	14.300s	15.029s	0.729s	4	1.00x
🐘 Postgres	Next.js (Turbopack)	14.421s	15.019s	0.597s	4	1.01x
🐘 Postgres	Express	14.498s (-0.6%)	15.018s (~)	0.520s	4	1.01x
🐘 Postgres	Nitro	14.570s (~)	15.023s (~)	0.453s	4	1.02x
💻 Local	Nitro	14.964s (-0.7%)	15.031s (-6.2% 🟢)	0.067s	4	1.05x
💻 Local	Express	14.977s (~)	15.029s (~)	0.053s	4	1.05x

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	13.879s	14.309s	0.430s	7	1.00x
🐘 Postgres	Express	13.951s (~)	14.453s (-1.0%)	0.502s	7	1.01x
🐘 Postgres	Nitro	14.006s (~)	14.453s (+1.0%)	0.447s	7	1.01x
💻 Local	Next.js (Turbopack)	15.028s	15.530s	0.502s	6	1.08x
💻 Local	Express	16.410s (-1.2%)	17.031s (~)	0.621s	6	1.18x
💻 Local	Nitro	16.413s (-2.2%)	17.031s (~)	0.619s	6	1.18x

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.226s	2.010s	0.784s	15	1.00x
🐘 Postgres	Express	1.259s (~)	2.011s (~)	0.752s	15	1.03x
🐘 Postgres	Nitro	1.285s (+0.8%)	2.010s (~)	0.725s	15	1.05x
💻 Local	Next.js (Turbopack)	1.480s	2.006s	0.526s	15	1.21x
💻 Local	Express	1.504s (+1.0%)	2.006s (~)	0.501s	15	1.23x
💻 Local	Nitro	1.506s (-7.7% 🟢)	2.006s (-3.3%)	0.500s	15	1.23x

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.313s (-2.0%)	3.009s (~)	0.695s	10	1.00x
🐘 Postgres	Nitro	2.371s (+0.8%)	3.008s (~)	0.637s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	2.387s	3.009s	0.622s	10	1.03x
💻 Local	Next.js (Turbopack)	2.617s	3.008s	0.391s	10	1.13x
💻 Local	Express	2.788s (-5.6% 🟢)	3.109s (-10.0% 🟢)	0.320s	10	1.21x
💻 Local	Nitro	2.822s (-10.2% 🟢)	3.207s (-17.4% 🟢)	0.386s	10	1.22x

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.462s (-0.7%)	4.010s (~)	0.548s	8	1.00x
🐘 Postgres	Nitro	3.494s (~)	4.011s (~)	0.517s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	3.653s	4.012s	0.358s	8	1.06x
💻 Local	Next.js (Turbopack)	6.818s	7.215s	0.397s	5	1.97x
💻 Local	Nitro	7.789s (-6.7% 🟢)	8.518s (-5.6% 🟢)	0.729s	4	2.25x
💻 Local	Express	7.846s (-5.9% 🟢)	8.520s (-5.6% 🟢)	0.674s	4	2.27x

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.223s	2.010s	0.787s	15	1.00x
🐘 Postgres	Nitro	1.253s (~)	2.008s (~)	0.755s	15	1.02x
🐘 Postgres	Express	1.281s (+1.9%)	2.008s (~)	0.727s	15	1.05x
💻 Local	Express	1.481s (-21.8% 🟢)	2.006s (-15.1% 🟢)	0.525s	15	1.21x
💻 Local	Next.js (Turbopack)	1.500s	2.006s	0.506s	15	1.23x
💻 Local	Nitro	1.534s (-17.8% 🟢)	2.006s (-14.3% 🟢)	0.472s	15	1.25x

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.343s (~)	3.008s (~)	0.665s	10	1.00x
🐘 Postgres	Nitro	2.356s (+0.7%)	3.011s (~)	0.655s	10	1.01x
🐘 Postgres	Next.js (Turbopack)	2.397s	3.009s	0.612s	10	1.02x
💻 Local	Next.js (Turbopack)	2.792s	3.007s	0.214s	10	1.19x
💻 Local	Express	2.856s (-8.8% 🟢)	3.007s (-20.1% 🟢)	0.151s	10	1.22x
💻 Local	Nitro	2.971s (-3.1%)	3.452s (-11.2% 🟢)	0.481s	9	1.27x

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.465s (-1.0%)	4.011s (~)	0.546s	8	1.00x
🐘 Postgres	Nitro	3.505s (+0.7%)	4.010s (~)	0.505s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	3.621s	4.010s	0.389s	8	1.05x
💻 Local	Next.js (Turbopack)	7.059s	7.770s	0.710s	4	2.04x
💻 Local	Nitro	8.118s (-11.2% 🟢)	8.522s (-15.0% 🟢)	0.404s	4	2.34x
💻 Local	Express	8.395s (-4.6%)	9.021s (-2.7%)	0.626s	4	2.42x

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.699s	1.004s	0.305s	60	1.00x
🐘 Postgres	Next.js (Turbopack)	0.763s	1.006s	0.243s	60	1.09x
🐘 Postgres	Express	0.800s (-4.7%)	1.006s (-1.7%)	0.206s	60	1.14x
🐘 Postgres	Nitro	0.837s (+2.0%)	1.006s (~)	0.170s	60	1.20x
💻 Local	Nitro	1.011s (+3.1%)	1.505s (+37.6% 🔺)	0.494s	40	1.45x
💻 Local	Express	1.038s (+5.5% 🔺)	2.006s (+86.4% 🔺)	0.967s	30	1.49x

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.893s (-4.2%)	2.052s (-9.1% 🟢)	0.159s	44	1.00x
🐘 Postgres	Next.js (Turbopack)	1.954s	2.174s	0.220s	42	1.03x
🐘 Postgres	Nitro	2.047s (+6.2% 🔺)	2.656s (+26.4% 🔺)	0.608s	34	1.08x
💻 Local	Next.js (Turbopack)	2.311s	3.008s	0.697s	30	1.22x
💻 Local	Nitro	3.029s (~)	3.729s (-0.8%)	0.700s	25	1.60x
💻 Local	Express	3.052s (+1.2%)	3.922s (+9.4% 🔺)	0.870s	23	1.61x

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	3.781s	4.010s	0.229s	30	1.00x
🐘 Postgres	Express	3.873s (-2.9%)	4.147s (-5.1% 🟢)	0.274s	29	1.02x
🐘 Postgres	Nitro	4.061s (-1.0%)	4.665s (+1.3%)	0.604s	26	1.07x
💻 Local	Next.js (Turbopack)	7.373s	8.016s	0.643s	15	1.95x
💻 Local	Nitro	9.010s (-3.1%)	9.479s (-5.4% 🟢)	0.468s	13	2.38x
💻 Local	Express	9.018s (-2.1%)	9.402s (-6.1% 🟢)	0.385s	13	2.38x

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.254s	1.007s	0.753s	60	1.00x
🐘 Postgres	Express	0.283s (~)	1.007s (~)	0.724s	60	1.11x
🐘 Postgres	Nitro	0.284s (~)	1.007s (~)	0.723s	60	1.12x
💻 Local	Express	0.566s (+1.0%)	1.004s (~)	0.438s	60	2.23x
💻 Local	Nitro	0.572s (-5.3% 🟢)	1.004s (-1.7%)	0.432s	60	2.25x
💻 Local	Next.js (Turbopack)	0.628s	1.094s	0.466s	56	2.47x

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.480s	1.006s	0.526s	90	1.00x
🐘 Postgres	Express	0.503s (-1.3%)	1.007s (~)	0.504s	90	1.05x
🐘 Postgres	Nitro	0.523s (+5.3% 🔺)	1.007s (~)	0.484s	90	1.09x
💻 Local	Nitro	2.352s (-7.3% 🟢)	3.009s (~)	0.657s	30	4.89x
💻 Local	Express	2.366s (-5.8% 🟢)	3.009s (~)	0.642s	30	4.93x
💻 Local	Next.js (Turbopack)	2.498s	3.008s	0.510s	30	5.20x

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.763s	1.006s	0.244s	120	1.00x
🐘 Postgres	Express	0.808s (-1.4%)	1.016s (~)	0.209s	119	1.06x
🐘 Postgres	Nitro	0.809s (+2.4%)	1.009s (~)	0.200s	119	1.06x
💻 Local	Next.js (Turbopack)	9.578s	10.271s	0.693s	12	12.56x
💻 Local	Express	10.413s (-6.9% 🟢)	11.031s (-7.6% 🟢)	0.618s	11	13.66x
💻 Local	Nitro	10.453s (-6.6% 🟢)	11.029s (-5.4% 🟢)	0.576s	11	13.71x

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.146s	1.003s	0.010s	1.016s	0.870s	10	1.00x
🐘 Postgres	Next.js (Turbopack)	0.197s	1.000s	0.002s	1.010s	0.813s	10	1.35x
💻 Local	Nitro	0.205s (-4.0%)	1.004s (~)	0.010s (-23.2% 🟢)	1.016s (~)	0.811s	10	1.41x
💻 Local	Express	0.206s (+3.5%)	1.004s (~)	0.010s (-17.4% 🟢)	1.016s (~)	0.810s	10	1.41x
🐘 Postgres	Express	0.208s (+1.4%)	0.991s (-0.8%)	0.001s (-18.8% 🟢)	1.009s (~)	0.801s	10	1.42x
🐘 Postgres	Nitro	0.217s (+5.7% 🔺)	0.996s (~)	0.001s (-13.3% 🟢)	1.010s (~)	0.794s	10	1.48x

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.590s	1.010s	0.009s	1.023s	0.432s	59	1.00x
🐘 Postgres	Next.js (Turbopack)	0.610s	1.009s	0.006s	1.024s	0.413s	59	1.03x
🐘 Postgres	Express	0.613s (-2.7%)	1.021s (+1.4%)	0.004s (-2.3%)	1.038s (+1.5%)	0.425s	58	1.04x
🐘 Postgres	Nitro	0.627s (~)	1.021s (+1.4%)	0.004s (+2.1%)	1.040s (+1.7%)	0.413s	58	1.06x
💻 Local	Nitro	0.761s (-9.2% 🟢)	1.013s (~)	0.009s (~)	1.024s (-8.2% 🟢)	0.263s	59	1.29x
💻 Local	Express	0.768s (+1.4%)	1.013s (-1.6%)	0.009s (-4.2%)	1.024s (-1.6%)	0.256s	59	1.30x

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.906s	1.133s	0.000s	1.142s	0.235s	53	1.00x
🐘 Postgres	Express	0.952s (-0.9%)	1.169s (-8.5% 🟢)	0.000s (-100.0% 🟢)	1.184s (-9.4% 🟢)	0.232s	51	1.05x
🐘 Postgres	Nitro	0.969s (~)	1.293s (+3.6%)	0.000s (+2.1%)	1.306s (+3.8%)	0.337s	47	1.07x
💻 Local	Next.js (Turbopack)	1.221s	2.018s	0.000s	2.020s	0.799s	30	1.35x
💻 Local	Nitro	1.229s (+0.5%)	2.021s (~)	0.000s (+233.3% 🔺)	2.023s (~)	0.794s	30	1.36x
💻 Local	Express	1.230s (~)	2.021s (~)	0.000s (+10.0% 🔺)	2.023s (~)	0.793s	30	1.36x

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.703s (-3.9%)	2.097s (-3.7%)	0.000s (NaN%)	2.112s (-3.9%)	0.409s	29	1.00x
🐘 Postgres	Nitro	1.814s (+1.3%)	2.140s (~)	0.000s (-100.0% 🟢)	2.153s (-1.0%)	0.339s	28	1.07x
🐘 Postgres	Next.js (Turbopack)	1.857s	2.182s	0.000s	2.189s	0.332s	28	1.09x
💻 Local	Express	3.321s (-4.2%)	3.973s (-1.5%)	0.001s (-29.7% 🟢)	3.977s (-1.5%)	0.656s	16	1.95x
💻 Local	Nitro	3.495s (+3.2%)	4.033s (~)	0.001s (+25.0% 🔺)	4.037s (~)	0.542s	15	2.05x
💻 Local	Next.js (Turbopack)	3.598s	4.097s	0.001s	4.101s	0.503s	15	2.11x

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Next.js (Turbopack)	16/21
🐘 Postgres	Next.js (Turbopack)	15/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	18/21
Next.js (Turbopack)	🐘 Postgres	14/21
Nitro	🐘 Postgres	18/21

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)

📋 View full workflow run

github-actions · 2026-04-27T18:20:47Z

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Skipped	Total
✅ ▲ Vercel Production	978	67	1045
✅ 💻 Local Development	1054	86	1140
✅ 📦 Local Production	1054	86	1140
✅ 🐘 Local Postgres	1054	86	1140
✅ 🪟 Windows	95	0	95
✅ 📋 Other	267	18	285
Total	4502	343	4845

Details by Category

✅ ▲ Vercel Production

App	Passed	Skipped
✅ astro	88	7
✅ example	88	7
✅ express	88	7
✅ fastify	88	7
✅ hono	88	7
✅ nextjs-turbopack	93	2
✅ nextjs-webpack	93	2
✅ nitro	88	7
✅ nuxt	88	7
✅ sveltekit	88	7
✅ vite	88	7

✅ 💻 Local Development

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	95	0	0

✅ 📋 Other

App	Passed	Skipped
✅ e2e-local-dev-nest-stable	89	6
✅ e2e-local-postgres-nest-stable	89	6
✅ e2e-local-prod-nest-stable	89	6

📋 View full workflow run

VaguelySerious · 2026-04-27T19:09:17Z

seems to fail CI e2e tests btw

VaguelySerious

AI review: no blocking issues

ijjk · 2026-04-27T19:30:09Z

Checked the failures. They look unrelated to this change: the Next canary jobs fail during install because @next/env@16.3.0-canary.3 is not available while canary points at 16.3.0-canary.2, and the docs smoke failure is a Vercel API 403 invalidToken. Stable Next jobs passed.

janory · 2026-04-28T07:56:57Z

+ return this.resolvePath(
+ '.vercel/output/diagnostics/workflows-manifest.json'
+ );


We should only ever write to this dir, if it's a prebuilt build. Is it what the if condition checks?

Why would we only want for prebuilt we always want this included in diagnostics for debugging same as the other stuff we output to the diagnostics for Next.js builds.

ijjk · 2026-04-27T18:20:37Z

Summary

write Next.js workflow diagnostics manifests to the configured Next dist dir under diagnostics/
keep .vercel/output/diagnostics as the fallback only for the Vercel Build Output API builder
update unit/e2e expectations and add a changeset

x-ref: slack thread

Tests

corepack pnpm --filter @workflow/builders build
corepack pnpm --filter @workflow/next build
corepack pnpm --filter @workflow/builders exec vitest run src/get-input-files.test.ts
corepack pnpm exec vitest run packages/next/src/index.test.ts
corepack pnpm changeset status
git diff --check

changeset-bot · 2026-04-27T18:20:41Z

🦋 Changeset detected

Latest commit: 5417b28

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

This PR includes changesets to release 17 packages

Name	Type
@workflow/builders	Patch
@workflow/next	Patch
@workflow/astro	Patch
@workflow/cli	Patch
@workflow/nest	Patch
@workflow/nitro	Patch
@workflow/rollup	Patch
@workflow/sveltekit	Patch
@workflow/vite	Patch
@workflow/vitest	Patch
workflow	Patch
@workflow/world-testing	Patch
@workflow/nuxt	Patch
@workflow/ai	Patch
@workflow/core	Patch
@workflow/web-shared	Patch
@workflow/web	Patch

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

vercel · 2026-04-27T18:20:43Z

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

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	Apr 28, 2026 9:04pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	Apr 28, 2026 9:04pm
example-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-astro-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-express-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-fastify-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-hono-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-nitro-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-nuxt-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-sveltekit-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workbench-vite-workflow	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workflow-docs	Ready	Preview, Comment, Open in v0	Apr 28, 2026 9:04pm
workflow-swc-playground	Ready	Preview, Comment	Apr 28, 2026 9:04pm
workflow-web	Ready	Preview, Comment	Apr 28, 2026 9:04pm

github-actions · 2026-04-27T18:20:47Z

📊 Benchmark Results

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

workflow with no steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	0.041s (-8.1% 🟢)	1.005s (~)	0.964s	10	1.00x
💻 Local	Next.js (Turbopack)	0.041s	1.005s	0.965s	10	1.00x
💻 Local	Nitro	0.044s (+1.4%)	1.005s (~)	0.961s	10	1.07x
🐘 Postgres	Next.js (Turbopack)	0.057s	1.009s	0.952s	10	1.41x
🐘 Postgres	Express	0.062s (+6.6% 🔺)	1.009s (~)	0.947s	10	1.52x
🐘 Postgres	Nitro	0.064s (-32.4% 🟢)	1.012s (-3.0%)	0.947s	10	1.58x

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	1.094s	2.006s	0.912s	10	1.00x
💻 Local	Nitro	1.127s (~)	2.006s (~)	0.879s	10	1.03x
💻 Local	Express	1.134s (+0.8%)	2.005s (~)	0.872s	10	1.04x
🐘 Postgres	Next.js (Turbopack)	1.136s	2.011s	0.874s	10	1.04x
🐘 Postgres	Nitro	1.153s (+1.2%)	2.011s (~)	0.858s	10	1.05x
🐘 Postgres	Express	1.157s (+0.9%)	2.008s (~)	0.851s	10	1.06x

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	10.636s	11.023s	0.387s	3	1.00x
🐘 Postgres	Next.js (Turbopack)	10.885s	11.019s	0.134s	3	1.02x
🐘 Postgres	Nitro	10.911s (~)	11.022s (~)	0.111s	3	1.03x
🐘 Postgres	Express	10.924s (~)	11.016s (~)	0.093s	3	1.03x
💻 Local	Nitro	10.934s (~)	11.024s (~)	0.090s	3	1.03x
💻 Local	Express	10.941s (~)	11.023s (~)	0.082s	3	1.03x

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	14.300s	15.029s	0.729s	4	1.00x
🐘 Postgres	Next.js (Turbopack)	14.421s	15.019s	0.597s	4	1.01x
🐘 Postgres	Express	14.498s (-0.6%)	15.018s (~)	0.520s	4	1.01x
🐘 Postgres	Nitro	14.570s (~)	15.023s (~)	0.453s	4	1.02x
💻 Local	Nitro	14.964s (-0.7%)	15.031s (-6.2% 🟢)	0.067s	4	1.05x
💻 Local	Express	14.977s (~)	15.029s (~)	0.053s	4	1.05x

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	13.879s	14.309s	0.430s	7	1.00x
🐘 Postgres	Express	13.951s (~)	14.453s (-1.0%)	0.502s	7	1.01x
🐘 Postgres	Nitro	14.006s (~)	14.453s (+1.0%)	0.447s	7	1.01x
💻 Local	Next.js (Turbopack)	15.028s	15.530s	0.502s	6	1.08x
💻 Local	Express	16.410s (-1.2%)	17.031s (~)	0.621s	6	1.18x
💻 Local	Nitro	16.413s (-2.2%)	17.031s (~)	0.619s	6	1.18x

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.226s	2.010s	0.784s	15	1.00x
🐘 Postgres	Express	1.259s (~)	2.011s (~)	0.752s	15	1.03x
🐘 Postgres	Nitro	1.285s (+0.8%)	2.010s (~)	0.725s	15	1.05x
💻 Local	Next.js (Turbopack)	1.480s	2.006s	0.526s	15	1.21x
💻 Local	Express	1.504s (+1.0%)	2.006s (~)	0.501s	15	1.23x
💻 Local	Nitro	1.506s (-7.7% 🟢)	2.006s (-3.3%)	0.500s	15	1.23x

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.313s (-2.0%)	3.009s (~)	0.695s	10	1.00x
🐘 Postgres	Nitro	2.371s (+0.8%)	3.008s (~)	0.637s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	2.387s	3.009s	0.622s	10	1.03x
💻 Local	Next.js (Turbopack)	2.617s	3.008s	0.391s	10	1.13x
💻 Local	Express	2.788s (-5.6% 🟢)	3.109s (-10.0% 🟢)	0.320s	10	1.21x
💻 Local	Nitro	2.822s (-10.2% 🟢)	3.207s (-17.4% 🟢)	0.386s	10	1.22x

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.462s (-0.7%)	4.010s (~)	0.548s	8	1.00x
🐘 Postgres	Nitro	3.494s (~)	4.011s (~)	0.517s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	3.653s	4.012s	0.358s	8	1.06x
💻 Local	Next.js (Turbopack)	6.818s	7.215s	0.397s	5	1.97x
💻 Local	Nitro	7.789s (-6.7% 🟢)	8.518s (-5.6% 🟢)	0.729s	4	2.25x
💻 Local	Express	7.846s (-5.9% 🟢)	8.520s (-5.6% 🟢)	0.674s	4	2.27x

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.223s	2.010s	0.787s	15	1.00x
🐘 Postgres	Nitro	1.253s (~)	2.008s (~)	0.755s	15	1.02x
🐘 Postgres	Express	1.281s (+1.9%)	2.008s (~)	0.727s	15	1.05x
💻 Local	Express	1.481s (-21.8% 🟢)	2.006s (-15.1% 🟢)	0.525s	15	1.21x
💻 Local	Next.js (Turbopack)	1.500s	2.006s	0.506s	15	1.23x
💻 Local	Nitro	1.534s (-17.8% 🟢)	2.006s (-14.3% 🟢)	0.472s	15	1.25x

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.343s (~)	3.008s (~)	0.665s	10	1.00x
🐘 Postgres	Nitro	2.356s (+0.7%)	3.011s (~)	0.655s	10	1.01x
🐘 Postgres	Next.js (Turbopack)	2.397s	3.009s	0.612s	10	1.02x
💻 Local	Next.js (Turbopack)	2.792s	3.007s	0.214s	10	1.19x
💻 Local	Express	2.856s (-8.8% 🟢)	3.007s (-20.1% 🟢)	0.151s	10	1.22x
💻 Local	Nitro	2.971s (-3.1%)	3.452s (-11.2% 🟢)	0.481s	9	1.27x

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.465s (-1.0%)	4.011s (~)	0.546s	8	1.00x
🐘 Postgres	Nitro	3.505s (+0.7%)	4.010s (~)	0.505s	8	1.01x
🐘 Postgres	Next.js (Turbopack)	3.621s	4.010s	0.389s	8	1.05x
💻 Local	Next.js (Turbopack)	7.059s	7.770s	0.710s	4	2.04x
💻 Local	Nitro	8.118s (-11.2% 🟢)	8.522s (-15.0% 🟢)	0.404s	4	2.34x
💻 Local	Express	8.395s (-4.6%)	9.021s (-2.7%)	0.626s	4	2.42x

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.699s	1.004s	0.305s	60	1.00x
🐘 Postgres	Next.js (Turbopack)	0.763s	1.006s	0.243s	60	1.09x
🐘 Postgres	Express	0.800s (-4.7%)	1.006s (-1.7%)	0.206s	60	1.14x
🐘 Postgres	Nitro	0.837s (+2.0%)	1.006s (~)	0.170s	60	1.20x
💻 Local	Nitro	1.011s (+3.1%)	1.505s (+37.6% 🔺)	0.494s	40	1.45x
💻 Local	Express	1.038s (+5.5% 🔺)	2.006s (+86.4% 🔺)	0.967s	30	1.49x

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.893s (-4.2%)	2.052s (-9.1% 🟢)	0.159s	44	1.00x
🐘 Postgres	Next.js (Turbopack)	1.954s	2.174s	0.220s	42	1.03x
🐘 Postgres	Nitro	2.047s (+6.2% 🔺)	2.656s (+26.4% 🔺)	0.608s	34	1.08x
💻 Local	Next.js (Turbopack)	2.311s	3.008s	0.697s	30	1.22x
💻 Local	Nitro	3.029s (~)	3.729s (-0.8%)	0.700s	25	1.60x
💻 Local	Express	3.052s (+1.2%)	3.922s (+9.4% 🔺)	0.870s	23	1.61x

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	3.781s	4.010s	0.229s	30	1.00x
🐘 Postgres	Express	3.873s (-2.9%)	4.147s (-5.1% 🟢)	0.274s	29	1.02x
🐘 Postgres	Nitro	4.061s (-1.0%)	4.665s (+1.3%)	0.604s	26	1.07x
💻 Local	Next.js (Turbopack)	7.373s	8.016s	0.643s	15	1.95x
💻 Local	Nitro	9.010s (-3.1%)	9.479s (-5.4% 🟢)	0.468s	13	2.38x
💻 Local	Express	9.018s (-2.1%)	9.402s (-6.1% 🟢)	0.385s	13	2.38x

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.254s	1.007s	0.753s	60	1.00x
🐘 Postgres	Express	0.283s (~)	1.007s (~)	0.724s	60	1.11x
🐘 Postgres	Nitro	0.284s (~)	1.007s (~)	0.723s	60	1.12x
💻 Local	Express	0.566s (+1.0%)	1.004s (~)	0.438s	60	2.23x
💻 Local	Nitro	0.572s (-5.3% 🟢)	1.004s (-1.7%)	0.432s	60	2.25x
💻 Local	Next.js (Turbopack)	0.628s	1.094s	0.466s	56	2.47x

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.480s	1.006s	0.526s	90	1.00x
🐘 Postgres	Express	0.503s (-1.3%)	1.007s (~)	0.504s	90	1.05x
🐘 Postgres	Nitro	0.523s (+5.3% 🔺)	1.007s (~)	0.484s	90	1.09x
💻 Local	Nitro	2.352s (-7.3% 🟢)	3.009s (~)	0.657s	30	4.89x
💻 Local	Express	2.366s (-5.8% 🟢)	3.009s (~)	0.642s	30	4.93x
💻 Local	Next.js (Turbopack)	2.498s	3.008s	0.510s	30	5.20x

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.763s	1.006s	0.244s	120	1.00x
🐘 Postgres	Express	0.808s (-1.4%)	1.016s (~)	0.209s	119	1.06x
🐘 Postgres	Nitro	0.809s (+2.4%)	1.009s (~)	0.200s	119	1.06x
💻 Local	Next.js (Turbopack)	9.578s	10.271s	0.693s	12	12.56x
💻 Local	Express	10.413s (-6.9% 🟢)	11.031s (-7.6% 🟢)	0.618s	11	13.66x
💻 Local	Nitro	10.453s (-6.6% 🟢)	11.029s (-5.4% 🟢)	0.576s	11	13.71x

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.146s	1.003s	0.010s	1.016s	0.870s	10	1.00x
🐘 Postgres	Next.js (Turbopack)	0.197s	1.000s	0.002s	1.010s	0.813s	10	1.35x
💻 Local	Nitro	0.205s (-4.0%)	1.004s (~)	0.010s (-23.2% 🟢)	1.016s (~)	0.811s	10	1.41x
💻 Local	Express	0.206s (+3.5%)	1.004s (~)	0.010s (-17.4% 🟢)	1.016s (~)	0.810s	10	1.41x
🐘 Postgres	Express	0.208s (+1.4%)	0.991s (-0.8%)	0.001s (-18.8% 🟢)	1.009s (~)	0.801s	10	1.42x
🐘 Postgres	Nitro	0.217s (+5.7% 🔺)	0.996s (~)	0.001s (-13.3% 🟢)	1.010s (~)	0.794s	10	1.48x

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	0.590s	1.010s	0.009s	1.023s	0.432s	59	1.00x
🐘 Postgres	Next.js (Turbopack)	0.610s	1.009s	0.006s	1.024s	0.413s	59	1.03x
🐘 Postgres	Express	0.613s (-2.7%)	1.021s (+1.4%)	0.004s (-2.3%)	1.038s (+1.5%)	0.425s	58	1.04x
🐘 Postgres	Nitro	0.627s (~)	1.021s (+1.4%)	0.004s (+2.1%)	1.040s (+1.7%)	0.413s	58	1.06x
💻 Local	Nitro	0.761s (-9.2% 🟢)	1.013s (~)	0.009s (~)	1.024s (-8.2% 🟢)	0.263s	59	1.29x
💻 Local	Express	0.768s (+1.4%)	1.013s (-1.6%)	0.009s (-4.2%)	1.024s (-1.6%)	0.256s	59	1.30x

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.906s	1.133s	0.000s	1.142s	0.235s	53	1.00x
🐘 Postgres	Express	0.952s (-0.9%)	1.169s (-8.5% 🟢)	0.000s (-100.0% 🟢)	1.184s (-9.4% 🟢)	0.232s	51	1.05x
🐘 Postgres	Nitro	0.969s (~)	1.293s (+3.6%)	0.000s (+2.1%)	1.306s (+3.8%)	0.337s	47	1.07x
💻 Local	Next.js (Turbopack)	1.221s	2.018s	0.000s	2.020s	0.799s	30	1.35x
💻 Local	Nitro	1.229s (+0.5%)	2.021s (~)	0.000s (+233.3% 🔺)	2.023s (~)	0.794s	30	1.36x
💻 Local	Express	1.230s (~)	2.021s (~)	0.000s (+10.0% 🔺)	2.023s (~)	0.793s	30	1.36x

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.703s (-3.9%)	2.097s (-3.7%)	0.000s (NaN%)	2.112s (-3.9%)	0.409s	29	1.00x
🐘 Postgres	Nitro	1.814s (+1.3%)	2.140s (~)	0.000s (-100.0% 🟢)	2.153s (-1.0%)	0.339s	28	1.07x
🐘 Postgres	Next.js (Turbopack)	1.857s	2.182s	0.000s	2.189s	0.332s	28	1.09x
💻 Local	Express	3.321s (-4.2%)	3.973s (-1.5%)	0.001s (-29.7% 🟢)	3.977s (-1.5%)	0.656s	16	1.95x
💻 Local	Nitro	3.495s (+3.2%)	4.033s (~)	0.001s (+25.0% 🔺)	4.037s (~)	0.542s	15	2.05x
💻 Local	Next.js (Turbopack)	3.598s	4.097s	0.001s	4.101s	0.503s	15	2.11x

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Next.js (Turbopack)	16/21
🐘 Postgres	Next.js (Turbopack)	15/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	18/21
Next.js (Turbopack)	🐘 Postgres	14/21
Nitro	🐘 Postgres	18/21

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)

📋 View full workflow run

github-actions · 2026-04-27T18:20:47Z

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Skipped	Total
✅ ▲ Vercel Production	978	67	1045
✅ 💻 Local Development	1054	86	1140
✅ 📦 Local Production	1054	86	1140
✅ 🐘 Local Postgres	1054	86	1140
✅ 🪟 Windows	95	0	95
✅ 📋 Other	267	18	285
Total	4502	343	4845

Details by Category

✅ ▲ Vercel Production

App	Passed	Skipped
✅ astro	88	7
✅ example	88	7
✅ express	88	7
✅ fastify	88	7
✅ hono	88	7
✅ nextjs-turbopack	93	2
✅ nextjs-webpack	93	2
✅ nitro	88	7
✅ nuxt	88	7
✅ sveltekit	88	7
✅ vite	88	7

✅ 💻 Local Development

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	89	6
✅ express-stable	89	6
✅ fastify-stable	89	6
✅ hono-stable	89	6
✅ nextjs-turbopack-canary	76	19
✅ nextjs-turbopack-stable	95	0
✅ nextjs-webpack-canary	76	19
✅ nextjs-webpack-stable	95	0
✅ nitro-stable	89	6
✅ nuxt-stable	89	6
✅ sveltekit-stable	89	6
✅ vite-stable	89	6

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	95	0	0

✅ 📋 Other

App	Passed	Skipped
✅ e2e-local-dev-nest-stable	89	6
✅ e2e-local-postgres-nest-stable	89	6
✅ e2e-local-prod-nest-stable	89	6

📋 View full workflow run

VaguelySerious · 2026-04-27T19:09:17Z

seems to fail CI e2e tests btw

VaguelySerious

AI review: no blocking issues

ijjk · 2026-04-27T19:30:09Z

Checked the failures. They look unrelated to this change: the Next canary jobs fail during install because @next/env@16.3.0-canary.3 is not available while canary points at 16.3.0-canary.2, and the docs smoke failure is a Vercel API 403 invalidToken. Stable Next jobs passed.

janory · 2026-04-28T07:56:57Z

+ return this.resolvePath(
+ '.vercel/output/diagnostics/workflows-manifest.json'
+ );


We should only ever write to this dir, if it's a prebuilt build. Is it what the if condition checks?

Why would we only want for prebuilt we always want this included in diagnostics for debugging same as the other stuff we output to the diagnostics for Next.js builds.

Write Next diagnostics to dist dir
8144ea3

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ijjk marked this pull request as ready for review April 27, 2026 18:33

ijjk requested review from TooTallNate and VaguelySerious and removed request for TooTallNate April 27, 2026 18:33

VaguelySerious reviewed Apr 27, 2026
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Comment threadpackages/builders/src/types.ts Outdated
Comment threadpackages/core/e2e/local-build.test.ts

Simplify Next dist dir config access
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VaguelySerious approved these changes Apr 27, 2026
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janory reviewed Apr 28, 2026
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VaguelySerious mentioned this pull request Apr 28, 2026
[ai] Expose totalUsage and finishReason on DurableAgent stream result #1863
Merged
3 tasks

Merge branch 'main' into ijjk/diagnostics-folder
5417b28

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