Remove lazy discovery from workflow/next by ijjk · Pull Request #2545 · vercel/workflow

ijjk · 2026-06-20T17:42:29Z

Summary

Remove lazy discovery from workflow/next so the integration has one build mode to optimize and maintain.

The remaining eager build path does not depend on Next.js deferred entries, which means workflow/next no longer needs a minimum Next.js version for lazy discovery support.

Changes

Remove the deferred/lazy discovery builder path.
Remove workflows.lazyDiscovery and WORKFLOW_NEXT_LAZY_DISCOVERY handling.
Remove socket-based loader discovery plumbing.
Update tests, CI matrix wiring, and docs for the single build mode.

Testing

pnpm --filter @workflow/next build
pnpm vitest run packages/core/e2e/utils.test.ts packages/next/src/index.test.ts
node scripts/create-test-matrix.mjs > /tmp/workflow-test-matrix.json

changeset-bot · 2026-06-20T17:42:33Z

🦋 Changeset detected

Latest commit: 0984752

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

This PR includes changesets to release 16 packages

Name	Type
@workflow/next	Major
@workflow/builders	Patch
workflow	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/world-testing	Patch
@workflow/nuxt	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 · 2026-06-20T17:42:34Z

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

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	Jun 21, 2026 2:59am
example-nextjs-workflow-webpack	Ready	Preview, Comment	Jun 21, 2026 2:59am
example-workflow	Ready	Preview, Comment	Jun 21, 2026 2:59am
workbench-astro-workflow	Ready	Preview, Comment	Jun 21, 2026 2:59am
workbench-express-workflow	Ready	Preview, Comment	Jun 21, 2026 2:59am
workbench-fastify-workflow	Ready	Preview, Comment	Jun 21, 2026 2:59am
workbench-hono-workflow	Ready	Preview, Comment	Jun 21, 2026 2:59am
workbench-nitro-workflow	Ready	Preview, Comment	Jun 21, 2026 2:59am
workbench-nuxt-workflow	Ready	Preview, Comment	Jun 21, 2026 2:59am
workbench-sveltekit-workflow	Ready	Preview, Comment	Jun 21, 2026 2:59am
workbench-tanstack-start-workflow	Ready	Preview, Comment	Jun 21, 2026 2:59am
workbench-vite-workflow	Ready	Preview, Comment	Jun 21, 2026 2:59am
workflow-docs	Building	Preview, Comment, Open in v0	Jun 21, 2026 2:59am
workflow-swc-playground	Ready	Preview, Comment	Jun 21, 2026 2:59am
workflow-tarballs	Ready	Preview, Comment	Jun 21, 2026 2:59am
workflow-web	Ready	Preview, Comment	Jun 21, 2026 2:59am

github-actions · 2026-06-20T17:42:43Z

📊 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	0.031s (-23.8% 🟢)	1.005s (~)	0.973s	10	1.00x
💻 Local	Nitro	0.042s (+3.2%)	1.007s (~)	0.964s	10	1.35x
💻 Local	Next.js (Turbopack)	0.046s (-3.3%)	1.006s (~)	0.959s	10	1.48x
🐘 Postgres	Next.js (Turbopack)	0.053s (-7.9% 🟢)	1.012s (~)	0.959s	10	1.70x
🐘 Postgres	Express	0.058s (-6.8% 🟢)	1.012s (~)	0.954s	10	1.83x
🐘 Postgres	Nitro	0.061s (-3.9%)	1.011s (~)	0.951s	10	1.94x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	0.290s (-27.0% 🟢)	2.711s (+11.2% 🔺)	2.421s	10	1.00x
▲ Vercel	Nitro	0.340s (-12.8% 🟢)	2.699s (+6.8% 🔺)	2.359s	10	1.17x
▲ Vercel	Next.js (Turbopack)	0.373s (+15.2% 🔺)	2.800s (~)	2.428s	10	1.28x

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

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	1.083s (-1.6%)	2.006s (~)	0.923s	10	1.00x
💻 Local	Next.js (Turbopack)	1.087s (~)	2.006s (~)	0.919s	10	1.00x
💻 Local	Nitro	1.091s (~)	2.006s (~)	0.915s	10	1.01x
🐘 Postgres	Next.js (Turbopack)	1.099s (~)	2.010s (~)	0.911s	10	1.02x
🐘 Postgres	Nitro	1.106s (~)	2.010s (~)	0.904s	10	1.02x
🐘 Postgres	Express	1.107s (~)	2.010s (~)	0.903s	10	1.02x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.669s (+9.7% 🔺)	3.386s (-5.1% 🟢)	1.717s	10	1.00x
▲ Vercel	Next.js (Turbopack)	1.781s (+12.8% 🔺)	3.900s (+5.0%)	2.119s	10	1.07x
▲ Vercel	Nitro	1.904s (+23.6% 🔺)	3.856s (+9.8% 🔺)	1.952s	10	1.14x

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

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	10.403s (-1.1%)	11.021s (~)	0.618s	3	1.00x
💻 Local	Next.js (Turbopack)	10.506s (~)	11.022s (~)	0.517s	3	1.01x
💻 Local	Nitro	10.515s (~)	11.023s (~)	0.508s	3	1.01x
🐘 Postgres	Nitro	10.524s (~)	11.020s (~)	0.496s	3	1.01x
🐘 Postgres	Next.js (Turbopack)	10.528s (~)	11.017s (~)	0.489s	3	1.01x
🐘 Postgres	Express	10.557s (~)	11.019s (~)	0.462s	3	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	14.212s (+7.8% 🔺)	16.056s (+4.4%)	1.844s	2	1.00x
▲ Vercel	Nitro	14.501s (+13.0% 🔺)	16.588s (+8.7% 🔺)	2.087s	2	1.02x
▲ Vercel	Express	14.664s (+12.0% 🔺)	16.394s (+7.8% 🔺)	1.730s	2	1.03x

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

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	13.524s (-3.4%)	14.027s (-1.4%)	0.503s	5	1.00x
💻 Local	Next.js (Turbopack)	13.708s (~)	14.027s (~)	0.319s	5	1.01x
💻 Local	Nitro	13.726s (~)	14.027s (~)	0.301s	5	1.01x
🐘 Postgres	Nitro	13.799s (-0.8%)	14.021s (~)	0.221s	5	1.02x
🐘 Postgres	Next.js (Turbopack)	13.859s (~)	14.019s (~)	0.160s	5	1.02x
🐘 Postgres	Express	13.911s (+0.9%)	14.020s (~)	0.109s	5	1.03x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	23.106s (+7.5% 🔺)	25.551s (+8.8% 🔺)	2.445s	3	1.00x
▲ Vercel	Express	23.222s (+15.2% 🔺)	25.508s (+13.8% 🔺)	2.286s	3	1.01x
▲ Vercel	Next.js (Turbopack)	23.433s (+17.5% 🔺)	25.535s (+15.0% 🔺)	2.101s	3	1.01x

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

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	11.815s (-6.2% 🟢)	12.021s (-7.7% 🟢)	0.206s	8	1.00x
💻 Local	Next.js (Turbopack)	12.262s (-1.6%)	13.025s (~)	0.763s	7	1.04x
💻 Local	Nitro	12.322s (~)	13.024s (~)	0.703s	7	1.04x
🐘 Postgres	Nitro	12.426s (~)	13.019s (~)	0.592s	7	1.05x
🐘 Postgres	Next.js (Turbopack)	12.515s (~)	13.016s (~)	0.501s	7	1.06x
🐘 Postgres	Express	12.542s (+0.7%)	13.305s (+2.2%)	0.762s	7	1.06x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	28.923s (+25.7% 🔺)	31.583s (+25.5% 🔺)	2.660s	3	1.00x
▲ Vercel	Next.js (Turbopack)	28.975s (+15.2% 🔺)	31.599s (+15.1% 🔺)	2.624s	3	1.00x
▲ Vercel	Nitro	30.866s (+24.8% 🔺)	33.336s (+24.9% 🔺)	2.470s	3	1.07x

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

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	1.166s (-5.2% 🟢)	2.005s (~)	0.839s	15	1.00x
🐘 Postgres	Next.js (Turbopack)	1.173s (+1.3%)	2.009s (~)	0.836s	15	1.01x
🐘 Postgres	Express	1.187s (-0.7%)	2.007s (~)	0.821s	15	1.02x
🐘 Postgres	Nitro	1.189s (~)	2.009s (~)	0.820s	15	1.02x
💻 Local	Next.js (Turbopack)	1.243s (-9.6% 🟢)	2.006s (~)	0.763s	15	1.07x
💻 Local	Nitro	1.244s (+3.5%)	2.006s (~)	0.762s	15	1.07x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	3.020s (+16.5% 🔺)	4.847s (+9.5% 🔺)	1.827s	7	1.00x
▲ Vercel	Express	3.275s (+21.6% 🔺)	5.067s (+13.7% 🔺)	1.792s	6	1.08x
▲ Vercel	Nitro	4.314s (+63.0% 🔺)	6.258s (+40.5% 🔺)	1.943s	5	1.43x

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

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.259s (+0.6%)	2.074s (+3.4%)	0.816s	15	1.00x
🐘 Postgres	Express	1.265s (-3.3%)	2.007s (-3.3%)	0.742s	15	1.01x
🐘 Postgres	Nitro	1.308s (+3.1%)	2.008s (~)	0.700s	15	1.04x
💻 Local	Express	1.796s (-11.7% 🟢)	2.314s (-7.7% 🟢)	0.517s	13	1.43x
💻 Local	Next.js (Turbopack)	2.014s (-14.1% 🟢)	2.469s (-15.4% 🟢)	0.455s	13	1.60x
💻 Local	Nitro	2.058s (+2.1%)	2.591s (+3.4%)	0.534s	12	1.63x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	3.921s (+23.1% 🔺)	5.887s (+14.8% 🔺)	1.966s	6	1.00x
▲ Vercel	Nitro	4.109s (+65.2% 🔺)	5.700s (+40.5% 🔺)	1.591s	6	1.05x
▲ Vercel	Express	4.425s (+56.1% 🔺)	6.297s (+37.1% 🔺)	1.872s	5	1.13x

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

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.405s (-15.2% 🟢)	3.454s (-8.2% 🟢)	2.049s	9	1.00x
🐘 Postgres	Nitro	1.446s (~)	3.568s (-3.0%)	2.122s	9	1.03x
🐘 Postgres	Next.js (Turbopack)	1.467s (-1.0%)	3.760s (-3.2%)	2.293s	8	1.04x
💻 Local	Express	4.382s (-24.1% 🟢)	5.013s (-21.9% 🟢)	0.630s	6	3.12x
💻 Local	Nitro	5.669s (+26.5% 🔺)	6.015s (+20.0% 🔺)	0.345s	5	4.03x
💻 Local	Next.js (Turbopack)	5.837s (-12.7% 🟢)	6.614s (-10.8% 🟢)	0.777s	5	4.15x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	4.719s (+53.6% 🔺)	7.181s (+45.6% 🔺)	2.463s	5	1.00x
▲ Vercel	Nitro	4.884s (+58.9% 🔺)	6.856s (+39.5% 🔺)	1.972s	5	1.04x
▲ Vercel	Next.js (Turbopack)	5.796s (+65.5% 🔺)	8.234s (+51.5% 🔺)	2.438s	4	1.23x

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

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.163s (-0.9%)	2.007s (~)	0.845s	15	1.00x
🐘 Postgres	Express	1.191s (~)	2.008s (~)	0.816s	15	1.02x
💻 Local	Express	1.198s (-2.6%)	2.005s (~)	0.807s	15	1.03x
🐘 Postgres	Nitro	1.209s (+0.8%)	2.008s (~)	0.799s	15	1.04x
💻 Local	Nitro	1.223s (-0.5%)	2.006s (~)	0.783s	15	1.05x
💻 Local	Next.js (Turbopack)	1.313s (-2.8%)	2.006s (~)	0.692s	15	1.13x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.813s (+39.0% 🔺)	4.802s (+23.0% 🔺)	1.989s	7	1.00x
▲ Vercel	Nitro	2.887s (+33.2% 🔺)	4.537s (+17.0% 🔺)	1.650s	7	1.03x
▲ Vercel	Next.js (Turbopack)	3.010s (+40.7% 🔺)	4.819s (+18.8% 🔺)	1.809s	7	1.07x

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

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.250s (-1.1%)	2.151s (+3.7%)	0.900s	14	1.00x
🐘 Postgres	Express	1.268s (-2.1%)	2.008s (~)	0.740s	15	1.01x
🐘 Postgres	Nitro	1.293s (+1.4%)	2.009s (~)	0.716s	15	1.03x
💻 Local	Express	1.870s (-8.2% 🟢)	2.314s (-15.5% 🟢)	0.444s	13	1.50x
💻 Local	Nitro	1.975s (-1.8%)	2.507s (+8.3% 🔺)	0.533s	12	1.58x
💻 Local	Next.js (Turbopack)	2.395s (-1.0%)	2.917s (~)	0.522s	11	1.92x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.741s (+36.4% 🔺)	5.523s (+28.6% 🔺)	1.782s	6	1.00x
▲ Vercel	Next.js (Turbopack)	3.906s (+46.6% 🔺)	6.065s (+45.7% 🔺)	2.160s	5	1.04x
▲ Vercel	Express	3.995s (+54.8% 🔺)	5.596s (+28.7% 🔺)	1.600s	6	1.07x

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

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.456s (+1.8%)	3.761s (~)	2.304s	8	1.00x
🐘 Postgres	Next.js (Turbopack)	1.457s (-0.8%)	3.885s (~)	2.428s	8	1.00x
🐘 Postgres	Nitro	1.474s (+1.2%)	4.012s (+6.7% 🔺)	2.538s	8	1.01x
💻 Local	Express	4.406s (-26.1% 🟢)	5.012s (-26.4% 🟢)	0.607s	6	3.02x
💻 Local	Nitro	5.626s (+13.8% 🔺)	6.016s (+9.1% 🔺)	0.390s	5	3.86x
💻 Local	Next.js (Turbopack)	5.780s (-14.9% 🟢)	6.416s (-14.6% 🟢)	0.636s	5	3.97x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.355s (-1.1%)	6.703s (+2.0%)	2.348s	5	1.00x
▲ Vercel	Next.js (Turbopack)	4.383s (+32.6% 🔺)	6.950s (+32.2% 🔺)	2.568s	5	1.01x
▲ Vercel	Express	4.440s (+4.4%)	6.274s (+3.0%)	1.834s	5	1.02x

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

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	0.450s (-26.3% 🟢)	1.004s (~)	0.554s	60	1.00x
🐘 Postgres	Express	0.525s (-8.9% 🟢)	1.006s (-1.7%)	0.481s	60	1.17x
🐘 Postgres	Next.js (Turbopack)	0.533s (-5.7% 🟢)	1.023s (~)	0.490s	59	1.19x
💻 Local	Next.js (Turbopack)	0.568s (-7.1% 🟢)	1.005s (-1.7%)	0.437s	60	1.26x
💻 Local	Nitro	0.578s (+1.3%)	1.022s (~)	0.444s	59	1.28x
🐘 Postgres	Nitro	0.601s (+7.0% 🔺)	1.023s (~)	0.422s	59	1.34x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.639s (+20.8% 🔺)	5.508s (+9.1% 🔺)	1.868s	11	1.00x
▲ Vercel	Express	4.121s (+20.1% 🔺)	6.085s (+12.1% 🔺)	1.964s	11	1.13x
▲ Vercel	Next.js (Turbopack)	4.246s (+2.8%)	5.798s (-7.1% 🟢)	1.551s	11	1.17x

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

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	1.213s (-22.2% 🟢)	2.007s (-1.1%)	0.794s	45	1.00x
🐘 Postgres	Express	1.219s (-8.0% 🟢)	2.007s (~)	0.788s	45	1.01x
🐘 Postgres	Next.js (Turbopack)	1.257s (-1.4%)	2.007s (~)	0.750s	45	1.04x
🐘 Postgres	Nitro	1.368s (+7.3% 🔺)	2.030s (+1.1%)	0.662s	45	1.13x
💻 Local	Next.js (Turbopack)	1.427s (-3.3%)	2.006s (~)	0.579s	45	1.18x
💻 Local	Nitro	1.451s (+4.9%)	2.006s (~)	0.554s	45	1.20x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	8.825s (+2.9%)	10.801s (+3.6%)	1.976s	9	1.00x
▲ Vercel	Nitro	9.255s (+21.3% 🔺)	11.296s (+18.9% 🔺)	2.040s	9	1.05x
▲ Vercel	Next.js (Turbopack)	9.495s (+16.0% 🔺)	11.458s (+14.6% 🔺)	1.963s	8	1.08x

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

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.456s (-6.8% 🟢)	3.059s (~)	0.602s	40	1.00x
🐘 Postgres	Next.js (Turbopack)	2.511s (-1.5%)	3.008s (~)	0.497s	40	1.02x
💻 Local	Express	2.580s (-20.7% 🟢)	3.007s (-25.0% 🟢)	0.427s	40	1.05x
🐘 Postgres	Nitro	2.682s (+1.1%)	3.059s (-2.5%)	0.377s	40	1.09x
💻 Local	Nitro	3.146s (+4.9%)	3.913s (+13.8% 🔺)	0.767s	31	1.28x
💻 Local	Next.js (Turbopack)	3.181s (-0.7%)	3.821s (-3.9%)	0.640s	32	1.30x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	18.298s (+9.6% 🔺)	20.700s (+8.8% 🔺)	2.402s	6	1.00x
▲ Vercel	Express	18.547s (+23.3% 🔺)	20.731s (+20.4% 🔺)	2.183s	6	1.01x
▲ Vercel	Next.js (Turbopack)	21.415s (+32.2% 🔺)	24.113s (+31.0% 🔺)	2.698s	5	1.17x

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

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.165s (-8.1% 🟢)	1.006s (~)	0.841s	60	1.00x
🐘 Postgres	Express	0.205s (-6.5% 🟢)	1.006s (~)	0.801s	60	1.24x
🐘 Postgres	Nitro	0.220s (+3.7%)	1.006s (~)	0.787s	60	1.34x
💻 Local	Express	0.295s (-13.6% 🟢)	1.004s (~)	0.709s	60	1.79x
💻 Local	Nitro	0.332s (-1.5%)	1.004s (~)	0.672s	60	2.02x
💻 Local	Next.js (Turbopack)	0.600s (-0.9%)	1.005s (~)	0.405s	60	3.65x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.468s (+16.0% 🔺)	3.359s (+13.6% 🔺)	1.891s	18	1.00x
▲ Vercel	Next.js (Turbopack)	1.658s (+26.0% 🔺)	3.432s (+15.4% 🔺)	1.774s	18	1.13x
▲ Vercel	Nitro	1.727s (+26.3% 🔺)	3.547s (+13.7% 🔺)	1.820s	17	1.18x

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

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.264s (-1.5%)	1.017s (+1.1%)	0.753s	89	1.00x
🐘 Postgres	Express	0.306s (-4.8%)	1.006s (~)	0.700s	90	1.16x
🐘 Postgres	Nitro	0.353s (+9.4% 🔺)	1.018s (+1.2%)	0.665s	89	1.34x
💻 Local	Express	1.565s (-20.0% 🟢)	2.052s (-16.9% 🟢)	0.487s	44	5.93x
💻 Local	Nitro	1.940s (-4.2%)	2.377s (-3.7%)	0.437s	38	7.35x
💻 Local	Next.js (Turbopack)	2.602s (-2.4%)	3.182s (+3.5%)	0.580s	29	9.86x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.670s (+57.5% 🔺)	4.768s (+32.8% 🔺)	2.098s	19	1.00x
▲ Vercel	Express	2.934s (+72.9% 🔺)	4.752s (+34.4% 🔺)	1.818s	20	1.10x
▲ Vercel	Next.js (Turbopack)	3.500s (+56.1% 🔺)	5.412s (+29.2% 🔺)	1.912s	17	1.31x

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

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.480s (~)	3.087s (+1.7%)	2.607s	39	1.00x
🐘 Postgres	Express	0.531s (+7.7% 🔺)	1.078s (+6.3% 🔺)	0.547s	112	1.11x
🐘 Postgres	Nitro	0.536s (+2.2%)	1.050s (~)	0.514s	115	1.12x
💻 Local	Express	7.925s (-19.0% 🟢)	8.491s (-20.0% 🟢)	0.567s	15	16.52x
💻 Local	Next.js (Turbopack)	9.793s (-2.7%)	10.863s (-2.3%)	1.071s	12	20.41x
💻 Local	Nitro	10.117s (+8.1% 🔺)	10.697s (+5.8% 🔺)	0.581s	12	21.09x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.208s (+45.6% 🔺)	5.334s (+29.8% 🔺)	2.126s	23	1.00x
▲ Vercel	Express	3.762s (+55.1% 🔺)	6.147s (+40.5% 🔺)	2.385s	20	1.17x
▲ Vercel	Next.js (Turbopack)	5.437s (+53.4% 🔺)	7.705s (+42.2% 🔺)	2.268s	16	1.69x

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

Stream Benchmarks (includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	1.131s (-3.6%)	2.003s (~)	0.008s (-31.7% 🟢)	2.014s (~)	0.883s	10	1.00x
💻 Local	Next.js (Turbopack)	1.142s (-1.0%)	2.003s (~)	0.010s (-16.9% 🟢)	2.017s (~)	0.875s	10	1.01x
🐘 Postgres	Next.js (Turbopack)	1.151s (-1.7%)	2.000s (~)	0.001s (-16.7% 🟢)	2.010s (~)	0.859s	10	1.02x
🐘 Postgres	Express	1.158s (-1.7%)	2.000s (~)	0.001s (-28.6% 🟢)	2.010s (~)	0.852s	10	1.02x
💻 Local	Nitro	1.168s (+1.6%)	2.005s (~)	0.012s (+33.7% 🔺)	2.019s (~)	0.852s	10	1.03x
🐘 Postgres	Nitro	1.168s (~)	1.995s (~)	0.002s (-15.8% 🟢)	2.011s (~)	0.843s	10	1.03x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Next.js (Turbopack)	2.276s (+7.9% 🔺)	3.426s (+1.3%)	2.068s (+24.6% 🔺)	5.982s (+8.0% 🔺)	3.706s	10	1.00x
▲ Vercel	Express	2.372s (+5.0% 🔺)	3.631s (+6.5% 🔺)	2.161s (-20.2% 🟢)	6.302s (-7.5% 🟢)	3.930s	10	1.04x
▲ Vercel	Nitro	2.420s (+12.3% 🔺)	3.510s (+2.9%)	3.165s (+98.9% 🔺)	7.139s (+27.9% 🔺)	4.719s	10	1.06x

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

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	1.459s (-7.9% 🟢)	2.007s (~)	0.011s (-13.7% 🟢)	2.020s (~)	0.560s	30	1.00x
💻 Local	Nitro	1.582s (~)	2.010s (~)	0.011s (-9.6% 🟢)	2.025s (~)	0.443s	30	1.08x
🐘 Postgres	Next.js (Turbopack)	1.593s (~)	2.013s (~)	0.005s (+8.1% 🔺)	2.028s (~)	0.435s	30	1.09x
💻 Local	Next.js (Turbopack)	1.595s (-1.5%)	2.009s (~)	0.012s (-2.9%)	2.026s (~)	0.432s	30	1.09x
🐘 Postgres	Express	1.611s (+1.6%)	2.005s (~)	0.005s (+6.0% 🔺)	2.028s (~)	0.417s	30	1.10x
🐘 Postgres	Nitro	1.655s (+0.8%)	2.005s (-1.6%)	0.005s (+4.7%)	2.028s (-1.5%)	0.373s	30	1.13x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	6.263s (+2.1%)	7.880s (~)	0.262s (-7.7% 🟢)	8.596s (-0.9%)	2.333s	8	1.00x
▲ Vercel	Nitro	6.325s (+10.5% 🔺)	7.847s (+3.6%)	0.214s (-30.8% 🟢)	8.567s (+1.7%)	2.242s	8	1.01x
▲ Vercel	Next.js (Turbopack)	6.740s (+13.5% 🔺)	8.110s (+6.7% 🔺)	0.308s (-6.6% 🟢)	8.894s (+5.1% 🔺)	2.154s	7	1.08x

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

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.725s (-5.1% 🟢)	1.009s (-5.1% 🟢)	0.000s (+Infinity% 🔺)	1.037s (-3.9%)	0.313s	59	1.00x
🐘 Postgres	Next.js (Turbopack)	0.788s (+3.5%)	1.111s (+2.1%)	0.000s (+322.2% 🔺)	1.127s (+2.8%)	0.339s	54	1.09x
🐘 Postgres	Nitro	0.793s (+3.2%)	1.104s (~)	0.000s (~)	1.119s (~)	0.326s	54	1.09x
💻 Local	Express	1.127s (-14.8% 🟢)	1.859s (-7.6% 🟢)	0.000s (-66.9% 🟢)	1.862s (-7.6% 🟢)	0.735s	33	1.56x
💻 Local	Nitro	1.346s (-1.4%)	2.013s (~)	0.001s (+25.0% 🔺)	2.016s (~)	0.669s	30	1.86x
💻 Local	Next.js (Turbopack)	1.497s (+3.4%)	2.013s (~)	0.000s (-33.3% 🟢)	2.017s (~)	0.520s	30	2.07x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.755s (-21.0% 🟢)	5.013s (-24.0% 🟢)	0.000s (NaN%)	5.479s (-23.1% 🟢)	1.725s	12	1.00x
▲ Vercel	Next.js (Turbopack)	3.952s (-6.6% 🟢)	5.373s (-13.5% 🟢)	0.000s (-90.4% 🟢)	5.881s (-13.6% 🟢)	1.929s	11	1.05x
▲ Vercel	Express	3.994s (+18.3% 🔺)	5.243s (+3.9%)	0.007s (+3850.0% 🔺)	5.806s (+4.4%)	1.812s	11	1.06x

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

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.611s (+5.3% 🔺)	2.175s (+3.5%)	0.000s (-100.0% 🟢)	2.189s (+1.7%)	0.578s	28	1.00x
🐘 Postgres	Next.js (Turbopack)	1.834s (-3.9%)	2.440s (-4.1%)	0.000s (+Infinity% 🔺)	2.448s (-4.0%)	0.615s	25	1.14x
🐘 Postgres	Nitro	1.886s (+14.0% 🔺)	2.381s (+7.5% 🔺)	0.000s (+107.7% 🔺)	2.396s (+7.4% 🔺)	0.509s	26	1.17x
💻 Local	Express	2.611s (-28.3% 🟢)	3.024s (-28.5% 🟢)	0.001s (-25.0% 🟢)	3.030s (-28.4% 🟢)	0.419s	20	1.62x
💻 Local	Nitro	3.451s (-1.4%)	4.162s (+5.1% 🔺)	0.001s (-11.1% 🟢)	4.166s (+4.8%)	0.715s	15	2.14x
💻 Local	Next.js (Turbopack)	4.281s (+3.9%)	4.721s (+2.6%)	0.001s (-40.2% 🟢)	4.725s (+2.5%)	0.445s	13	2.66x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.794s (-15.8% 🟢)	6.293s (-11.9% 🟢)	0.000s (-100.0% 🟢)	6.815s (-11.7% 🟢)	2.021s	9	1.00x
▲ Vercel	Next.js (Turbopack)	5.566s (+5.1% 🔺)	7.160s (+5.5% 🔺)	0.000s (NaN%)	7.700s (+5.2% 🔺)	2.134s	8	1.16x
▲ Vercel	Express	⚠️ missing	-	-	-	-	-

🔍 Observability: Nitro | Next.js (Turbopack)

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Express	21/21
🐘 Postgres	Next.js (Turbopack)	11/21
▲ Vercel	Nitro	9/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	11/21
Next.js (Turbopack)	🐘 Postgres	15/21
Nitro	🐘 Postgres	13/21

Column Definitions

Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
Wall Time: Total testbench time (trigger workflow + poll for result)
Overhead: Testbench overhead (Wall Time - Workflow Time)
Samples: Number of benchmark iterations run
vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

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

📋 View full workflow run

github-actions · 2026-06-20T17:42:44Z

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Skipped	Total
✅ ▲ Vercel Production	1442	230	1672
✅ 💻 Local Development	1605	219	1824
✅ 📦 Local Production	1605	219	1824
✅ 🐘 Local Postgres	1593	231	1824
✅ 🪟 Windows	152	0	152
✅ 📋 Other	885	179	1064
Total	7282	1078	8360

Details by Category

✅ ▲ Vercel Production

App	Passed	Skipped
✅ astro	125	27
✅ example	125	27
✅ express	125	27
✅ fastify	125	27
✅ hono	125	27
✅ nextjs-turbopack	149	3
✅ nextjs-webpack	149	3
✅ nitro	125	27
✅ nuxt	125	27
✅ sveltekit	144	8
✅ vite	125	27

✅ 💻 Local Development

App	Passed	Skipped
✅ astro-stable	127	25
✅ express-stable	127	25
✅ fastify-stable	127	25
✅ hono-stable	127	25
✅ nextjs-turbopack-canary	133	19
✅ nextjs-turbopack-stable	152	0
✅ nextjs-webpack-canary	133	19
✅ nextjs-webpack-stable	152	0
✅ nitro-stable	127	25
✅ nuxt-stable	127	25
✅ sveltekit-stable	146	6
✅ vite-stable	127	25

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	127	25
✅ express-stable	127	25
✅ fastify-stable	127	25
✅ hono-stable	127	25
✅ nextjs-turbopack-canary	133	19
✅ nextjs-turbopack-stable	152	0
✅ nextjs-webpack-canary	133	19
✅ nextjs-webpack-stable	152	0
✅ nitro-stable	127	25
✅ nuxt-stable	127	25
✅ sveltekit-stable	146	6
✅ vite-stable	127	25

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	126	26
✅ express-stable	126	26
✅ fastify-stable	126	26
✅ hono-stable	126	26
✅ nextjs-turbopack-canary	132	20
✅ nextjs-turbopack-stable	151	1
✅ nextjs-webpack-canary	132	20
✅ nextjs-webpack-stable	151	1
✅ nitro-stable	126	26
✅ nuxt-stable	126	26
✅ sveltekit-stable	145	7
✅ vite-stable	126	26

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	152	0	0

✅ 📋 Other

App	Passed	Skipped
✅ e2e-local-dev-nest-stable	127	25
✅ e2e-local-dev-tanstack-start-	127	25
✅ e2e-local-postgres-nest-stable	126	26
✅ e2e-local-postgres-tanstack-start-	126	26
✅ e2e-local-prod-nest-stable	127	25
✅ e2e-local-prod-tanstack-start-	127	25
✅ e2e-vercel-prod-tanstack-start	125	27

📋 View full workflow run

vercel Bot deployed to Preview – workflow-web June 20, 2026 17:43 View deployment

vercel Bot deployed to Preview – workflow-tarballs June 20, 2026 17:44 View deployment

vercel Bot deployed to Preview – workbench-express-workflow June 20, 2026 17:44 View deployment

vercel Bot deployed to Preview – workbench-hono-workflow June 20, 2026 17:44 View deployment

vercel Bot deployed to Preview – workbench-fastify-workflow June 20, 2026 17:44 View deployment

vercel Bot deployed to Preview – workbench-nitro-workflow June 20, 2026 17:44 View deployment

vercel Bot deployed to Preview – workbench-vite-workflow June 20, 2026 17:44 View deployment

vercel Bot deployed to Preview – workbench-sveltekit-workflow June 20, 2026 17:44 View deployment

vercel Bot deployed to Preview – example-workflow June 20, 2026 17:44 View deployment

vercel Bot deployed to Preview – workbench-tanstack-start-workflow June 20, 2026 17:44 View deployment

vercel Bot deployed to Preview – workbench-astro-workflow June 20, 2026 17:44 View deployment

vercel Bot deployed to Preview – workbench-nuxt-workflow June 20, 2026 17:44 View deployment

vercel Bot deployed to Preview – example-nextjs-workflow-turbopack June 20, 2026 17:44 View deployment

vercel Bot deployed to Preview – example-nextjs-workflow-webpack June 20, 2026 17:45 View deployment

vercel Bot deployed to Preview – workflow-docs June 20, 2026 17:45 View deployment

vercel Bot deployed to Preview – workflow-swc-playground June 20, 2026 17:46 View deployment

ijjk force-pushed the ijjk/remove-next-lazy-discovery branch from 36ae8a0 to 2577057 Compare June 20, 2026 17:49

vercel Bot deployed to Preview – workflow-web June 20, 2026 17:51 View deployment

vercel Bot deployed to Preview – workbench-hono-workflow June 20, 2026 17:51 View deployment

vercel Bot deployed to Preview – workbench-express-workflow June 20, 2026 17:51 View deployment

vercel Bot deployed to Preview – workbench-fastify-workflow June 20, 2026 17:51 View deployment

vercel Bot deployed to Preview – workbench-nitro-workflow June 20, 2026 17:51 View deployment

vercel Bot deployed to Preview – workbench-sveltekit-workflow June 20, 2026 17:51 View deployment

vercel Bot deployed to Preview – workflow-tarballs June 20, 2026 17:51 View deployment

vercel Bot deployed to Preview – workbench-vite-workflow June 20, 2026 17:51 View deployment

vercel Bot deployed to Preview – workbench-astro-workflow June 20, 2026 17:51 View deployment

vercel Bot deployed to Preview – workbench-sveltekit-workflow June 20, 2026 18:00 View deployment

vercel Bot deployed to Preview – workbench-vite-workflow June 20, 2026 18:00 View deployment

vercel Bot deployed to Preview – workbench-tanstack-start-workflow June 20, 2026 18:00 View deployment

vercel Bot deployed to Preview – example-workflow June 20, 2026 18:00 View deployment

vercel Bot deployed to Preview – workbench-nuxt-workflow June 20, 2026 18:00 View deployment

vercel Bot deployed to Preview – example-nextjs-workflow-turbopack June 20, 2026 18:00 View deployment

vercel Bot deployed to Preview – example-nextjs-workflow-webpack June 20, 2026 18:00 View deployment

vercel Bot deployed to Preview – workflow-docs June 20, 2026 18:01 View deployment

vercel Bot deployed to Preview – workflow-swc-playground June 20, 2026 18:02 View deployment

ijjk force-pushed the ijjk/remove-next-lazy-discovery branch from 849f57a to a3a7c62 Compare June 20, 2026 18:30

vercel Bot deployed to Preview – workflow-web June 20, 2026 18:31 View deployment

vercel Bot deployed to Preview – workbench-hono-workflow June 20, 2026 18:32 View deployment

vercel Bot deployed to Preview – workbench-nitro-workflow June 20, 2026 18:32 View deployment

vercel Bot deployed to Preview – workbench-express-workflow June 20, 2026 18:32 View deployment

vercel Bot deployed to Preview – workflow-tarballs June 20, 2026 18:32 View deployment

vercel Bot deployed to Preview – workbench-fastify-workflow June 20, 2026 18:32 View deployment

vercel Bot deployed to Preview – workbench-vite-workflow June 20, 2026 18:32 View deployment

vercel Bot deployed to Preview – workbench-astro-workflow June 20, 2026 18:32 View deployment

vercel Bot deployed to Preview – workbench-sveltekit-workflow June 20, 2026 18:32 View deployment

vercel Bot deployed to Preview – example-workflow June 20, 2026 18:32 View deployment

vercel Bot deployed to Preview – workbench-tanstack-start-workflow June 20, 2026 18:32 View deployment

vercel Bot deployed to Preview – workbench-nuxt-workflow June 20, 2026 18:32 View deployment

vercel Bot deployed to Preview – example-nextjs-workflow-turbopack June 20, 2026 18:32 View deployment

vercel Bot deployed to Preview – workflow-docs June 20, 2026 18:33 View deployment

vercel Bot deployed to Preview – example-nextjs-workflow-webpack June 20, 2026 18:33 View deployment

vercel Bot deployed to Preview – workflow-swc-playground June 20, 2026 18:34 View deployment

ijjk force-pushed the ijjk/remove-next-lazy-discovery branch from a3a7c62 to cee9416 Compare June 20, 2026 19:07

vercel Bot deployed to Preview – workflow-web June 20, 2026 19:08 View deployment

vercel Bot deployed to Preview – workflow-tarballs June 20, 2026 19:09 View deployment

Remove lazy discovery from workflow/next

0984752

Conversation

ijjk commented Jun 20, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Summary

Changes

Testing

Uh oh!

changeset-bot Bot commented Jun 20, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

🦋 Changeset detected

Uh oh!

vercel Bot commented Jun 20, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

github-actions Bot commented Jun 20, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

📊 Benchmark Results

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

Summary

Uh oh!

github-actions Bot commented Jun 20, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

🧪 E2E Test Results

Summary

Details by Category

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

1 participant

ijjk commented Jun 20, 2026 •

edited

Loading

changeset-bot Bot commented Jun 20, 2026 •

edited

Loading

vercel Bot commented Jun 20, 2026 •

edited

Loading

github-actions Bot commented Jun 20, 2026 •

edited

Loading

github-actions Bot commented Jun 20, 2026 •

edited

Loading