fix(next): derive workflow project root by NathanColosimo · Pull Request #2729 · vercel/workflow

NathanColosimo · 2026-06-30T22:37:52Z

Summary

Derives the Workflow Next builder projectRoot from the same root sources Next uses for tracing: explicit outputFileTracingRoot, then turbopack.root, then workspace/lockfile markers. workingDir and moduleSpecifierRoot stay scoped to the Next app directory so module specifiers remain stable.

Part of #2716.

Tests

pnpm --filter @workflow/next test
pnpm turbo build --filter @workflow/next
pnpm biome check packages/next/src/index.ts packages/next/src/index.test.ts .changeset/next-root-detection.md

vercel · 2026-06-30T22:37:57Z

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Project	Deployment	Actions	Updated (UTC)
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changeset-bot · 2026-06-30T22:37:58Z

🦋 Changeset detected

Latest commit: 2b0ae70

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

github-actions · 2026-06-30T22:38:09Z

🧪 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

github-actions · 2026-06-30T22:38:10Z

📊 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	0.045s (-1.7%)	1.007s (~)	0.961s	10	1.00x
💻 Local	Nitro	0.049s (+10.0% 🔺)	1.007s (~)	0.959s	10	1.07x
💻 Local	Next.js (Turbopack)	0.051s (-5.8% 🟢)	1.006s (~)	0.955s	10	1.12x
🐘 Postgres	Next.js (Turbopack)	0.060s (-45.9% 🟢)	1.013s (-2.6%)	0.953s	10	1.32x
🐘 Postgres	Express	0.062s (-15.6% 🟢)	1.012s (~)	0.950s	10	1.36x
🐘 Postgres	Nitro	0.065s (+3.8%)	1.011s (~)	0.945s	10	1.44x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	0.224s (-38.7% 🟢)	1.411s (-22.9% 🟢)	1.188s	10	1.00x
▲ Vercel	Express	0.248s (+22.7% 🔺)	2.318s (+17.3% 🔺)	2.070s	10	1.11x
▲ Vercel	Next.js (Turbopack)	0.305s (-34.0% 🟢)	1.895s (-26.2% 🟢)	1.590s	10	1.36x

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

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Next.js (Turbopack)	1.080s (~)	2.006s (~)	0.926s	10	1.00x
💻 Local	Express	1.081s (~)	2.006s (~)	0.925s	10	1.00x
💻 Local	Nitro	1.084s (~)	2.006s (~)	0.922s	10	1.00x
🐘 Postgres	Next.js (Turbopack)	1.093s (-0.8%)	2.009s (~)	0.915s	10	1.01x
🐘 Postgres	Express	1.095s (~)	2.011s (~)	0.916s	10	1.01x
🐘 Postgres	Nitro	1.103s (+1.0%)	2.010s (~)	0.906s	10	1.02x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.432s (+5.1% 🔺)	2.972s (+12.9% 🔺)	1.540s	10	1.00x
▲ Vercel	Nitro	1.442s (+7.2% 🔺)	2.745s (-2.9%)	1.303s	10	1.01x
▲ Vercel	Next.js (Turbopack)	2.537s (+13.0% 🔺)	3.650s (-4.4%)	1.112s	10	1.77x

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

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	10.435s (-0.5%)	11.023s (~)	0.589s	3	1.00x
🐘 Postgres	Express	10.444s (~)	11.020s (~)	0.576s	3	1.00x
💻 Local	Nitro	10.479s (+0.5%)	11.022s (~)	0.543s	3	1.00x
🐘 Postgres	Next.js (Turbopack)	10.495s (+0.9%)	11.017s (~)	0.522s	3	1.01x
💻 Local	Next.js (Turbopack)	10.512s (~)	11.023s (~)	0.511s	3	1.01x
🐘 Postgres	Nitro	10.526s (+0.6%)	11.019s (~)	0.493s	3	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	11.794s (-0.9%)	13.626s (~)	1.832s	3	1.00x
▲ Vercel	Express	11.947s (-0.9%)	14.110s (+3.5%)	2.163s	3	1.01x
▲ Vercel	Next.js (Turbopack)	13.066s (+3.1%)	14.571s (-1.1%)	1.505s	3	1.11x

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

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	13.524s (-0.8%)	14.017s (~)	0.492s	5	1.00x
💻 Local	Express	13.607s (-0.9%)	14.026s (~)	0.419s	5	1.01x
💻 Local	Next.js (Turbopack)	13.631s (~)	14.027s (~)	0.396s	5	1.01x
💻 Local	Nitro	13.670s (+0.8%)	14.029s (~)	0.359s	5	1.01x
🐘 Postgres	Next.js (Turbopack)	13.735s (+0.6%)	14.020s (~)	0.286s	5	1.02x
🐘 Postgres	Nitro	13.796s (+0.9%)	14.020s (~)	0.224s	5	1.02x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	16.044s (-4.3%)	18.094s (-1.8%)	2.050s	4	1.00x
▲ Vercel	Express	16.112s (-1.9%)	18.175s (-2.9%)	2.063s	4	1.00x
▲ Vercel	Next.js (Turbopack)	17.819s (+3.6%)	19.847s (+2.8%)	2.028s	4	1.11x

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

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	12.098s (-3.1%)	12.876s (-1.1%)	0.777s	7	1.00x
🐘 Postgres	Nitro	12.173s (~)	13.020s (~)	0.847s	7	1.01x
💻 Local	Nitro	12.227s (+1.0%)	13.027s (~)	0.800s	7	1.01x
💻 Local	Next.js (Turbopack)	12.274s (+0.8%)	13.025s (~)	0.751s	7	1.01x
🐘 Postgres	Next.js (Turbopack)	12.308s (-1.0%)	13.019s (+0.8%)	0.711s	7	1.02x
💻 Local	Express	12.334s (+1.3%)	13.026s (~)	0.692s	7	1.02x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	17.486s (+0.7%)	19.281s (+1.7%)	1.795s	5	1.00x
▲ Vercel	Express	17.648s (~)	19.931s (+3.1%)	2.282s	5	1.01x
▲ Vercel	Next.js (Turbopack)	19.805s (~)	21.245s (-2.9%)	1.439s	5	1.13x

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

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.174s (-2.4%)	2.008s (~)	0.834s	15	1.00x
🐘 Postgres	Express	1.190s (+0.6%)	2.008s (~)	0.818s	15	1.01x
🐘 Postgres	Next.js (Turbopack)	1.204s (-5.4% 🟢)	2.008s (-1.6%)	0.804s	15	1.03x
💻 Local	Nitro	1.372s (-2.0%)	2.006s (~)	0.634s	15	1.17x
💻 Local	Express	1.393s (~)	2.007s (~)	0.614s	15	1.19x
💻 Local	Next.js (Turbopack)	1.402s (-1.5%)	2.007s (~)	0.605s	15	1.19x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.678s (+35.7% 🔺)	4.426s (+18.6% 🔺)	1.748s	7	1.00x
▲ Vercel	Nitro	3.067s (+40.2% 🔺)	4.660s (+22.7% 🔺)	1.592s	7	1.15x
▲ Vercel	Next.js (Turbopack)	3.650s (+10.1% 🔺)	5.079s (-0.8%)	1.429s	7	1.36x

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

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	1.328s (~)	3.008s (+21.3% 🔺)	1.680s	10	1.00x
🐘 Postgres	Nitro	1.373s (+3.8%)	2.316s (-18.1% 🟢)	0.943s	13	1.03x
🐘 Postgres	Express	1.393s (+2.8%)	2.736s (+18.1% 🔺)	1.343s	11	1.05x
💻 Local	Next.js (Turbopack)	2.311s (-15.7% 🟢)	2.918s (-6.1% 🟢)	0.607s	11	1.74x
💻 Local	Nitro	2.321s (-7.9% 🟢)	3.009s (-3.2%)	0.688s	10	1.75x
💻 Local	Express	2.362s (-8.5% 🟢)	3.008s (~)	0.646s	10	1.78x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.486s (-6.2% 🟢)	3.989s (-0.9%)	1.503s	8	1.00x
▲ Vercel	Nitro	2.581s (+8.0% 🔺)	3.828s (~)	1.247s	8	1.04x
▲ Vercel	Next.js (Turbopack)	4.039s (+11.3% 🔺)	5.225s (-9.6% 🟢)	1.186s	6	1.62x

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

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.560s (-1.8%)	4.011s (~)	2.451s	8	1.00x
🐘 Postgres	Express	1.629s (+2.5%)	4.018s (~)	2.388s	8	1.04x
🐘 Postgres	Next.js (Turbopack)	3.087s (+69.6% 🔺)	6.214s (+27.0% 🔺)	3.126s	5	1.98x
💻 Local	Next.js (Turbopack)	3.123s (-60.1% 🟢)	4.585s (-42.8% 🟢)	1.462s	7	2.00x
💻 Local	Express	3.811s (-42.8% 🟢)	5.014s (-32.4% 🟢)	1.203s	7	2.44x
💻 Local	Nitro	4.537s (-26.2% 🟢)	5.180s (-24.0% 🟢)	0.643s	6	2.91x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.990s (+13.1% 🔺)	4.476s (+5.8% 🔺)	1.485s	7	1.00x
▲ Vercel	Express	3.258s (+21.5% 🔺)	4.952s (+14.2% 🔺)	1.694s	7	1.09x
▲ Vercel	Next.js (Turbopack)	4.456s (+7.4% 🔺)	5.918s (-3.1%)	1.462s	6	1.49x

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

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.174s (~)	2.007s (~)	0.833s	15	1.00x
🐘 Postgres	Next.js (Turbopack)	1.183s (~)	2.008s (~)	0.824s	15	1.01x
🐘 Postgres	Express	1.189s (+0.8%)	2.007s (~)	0.818s	15	1.01x
💻 Local	Nitro	1.420s (+3.6%)	2.007s (~)	0.587s	15	1.21x
💻 Local	Next.js (Turbopack)	1.427s (~)	2.007s (~)	0.580s	15	1.22x
💻 Local	Express	1.474s (+2.0%)	2.007s (~)	0.532s	15	1.26x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.056s (+8.6% 🔺)	3.952s (+6.4% 🔺)	1.896s	8	1.00x
▲ Vercel	Nitro	2.057s (+7.3% 🔺)	3.513s (-0.6%)	1.456s	9	1.00x
▲ Vercel	Next.js (Turbopack)	3.277s (+6.5% 🔺)	4.772s (-3.3%)	1.495s	7	1.59x

🔍 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)	1.328s (-5.5% 🟢)	3.008s (+18.8% 🔺)	1.680s	10	1.00x
🐘 Postgres	Express	1.339s (+2.4%)	2.510s (+1.6%)	1.171s	12	1.01x
🐘 Postgres	Nitro	1.363s (+3.8%)	2.223s (-14.3% 🟢)	0.860s	14	1.03x
💻 Local	Next.js (Turbopack)	2.472s (-7.4% 🟢)	3.009s (-6.3% 🟢)	0.536s	10	1.86x
💻 Local	Nitro	2.485s (-9.2% 🟢)	3.009s (-10.0% 🟢)	0.524s	10	1.87x
💻 Local	Express	2.672s (+1.3%)	3.109s (+3.3%)	0.436s	10	2.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.263s (-2.4%)	3.525s (-6.7% 🟢)	1.262s	9	1.00x
▲ Vercel	Express	2.423s (-3.3%)	4.103s (+3.9%)	1.680s	8	1.07x
▲ Vercel	Next.js (Turbopack)	3.510s (+3.0%)	4.821s (-8.5% 🟢)	1.311s	7	1.55x

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

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.594s (~)	4.136s (~)	2.542s	8	1.00x
🐘 Postgres	Nitro	1.629s (-1.0%)	4.584s (+6.6% 🔺)	2.955s	7	1.02x
🐘 Postgres	Next.js (Turbopack)	2.991s (+14.7% 🔺)	5.847s (+11.8% 🔺)	2.856s	6	1.88x
💻 Local	Next.js (Turbopack)	5.442s (-14.5% 🟢)	6.215s (-13.9% 🟢)	0.773s	5	3.41x
💻 Local	Express	5.576s (-12.0% 🟢)	6.216s (-8.8% 🟢)	0.640s	5	3.50x
💻 Local	Nitro	5.579s (-13.4% 🟢)	6.214s (-16.2% 🟢)	0.635s	5	3.50x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.574s (-9.0% 🟢)	4.152s (-8.9% 🟢)	1.578s	8	1.00x
▲ Vercel	Nitro	2.622s (-7.6% 🟢)	4.005s (-8.7% 🟢)	1.383s	8	1.02x
▲ Vercel	Next.js (Turbopack)	4.313s (-1.5%)	6.085s (-1.4%)	1.772s	5	1.68x

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

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.521s (-5.6% 🟢)	1.006s (~)	0.484s	60	1.00x
🐘 Postgres	Nitro	0.561s (-0.5%)	1.023s (~)	0.462s	59	1.08x
💻 Local	Express	0.563s (+2.0%)	1.005s (~)	0.442s	60	1.08x
🐘 Postgres	Next.js (Turbopack)	0.566s (-6.8% 🟢)	1.023s (-2.7%)	0.458s	59	1.09x
💻 Local	Nitro	0.602s (~)	1.005s (-3.3%)	0.404s	60	1.15x
💻 Local	Next.js (Turbopack)	0.643s (-2.8%)	1.022s (-3.4%)	0.379s	59	1.23x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.418s (-12.1% 🟢)	3.651s (-18.1% 🟢)	1.233s	17	1.00x
▲ Vercel	Express	2.464s (-8.5% 🟢)	4.096s (-4.5%)	1.632s	15	1.02x
▲ Vercel	Next.js (Turbopack)	3.969s (+9.9% 🔺)	5.836s (+8.5% 🔺)	1.868s	11	1.64x

🔍 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
🐘 Postgres	🥇 Express	1.214s (-10.2% 🟢)	2.008s (-1.1%)	0.794s	45	1.00x
🐘 Postgres	Nitro	1.312s (~)	2.007s (-2.2%)	0.696s	45	1.08x
🐘 Postgres	Next.js (Turbopack)	1.335s (-10.3% 🟢)	2.030s (-5.0% 🟢)	0.694s	45	1.10x
💻 Local	Express	1.442s (+3.0%)	2.006s (~)	0.564s	45	1.19x
💻 Local	Nitro	1.526s (+6.7% 🔺)	2.006s (~)	0.481s	45	1.26x
💻 Local	Next.js (Turbopack)	1.624s (+9.1% 🔺)	2.052s (+2.3%)	0.428s	44	1.34x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.657s (-7.8% 🟢)	7.219s (-4.8%)	1.562s	13	1.00x
▲ Vercel	Express	5.816s (-5.6% 🟢)	7.550s (-3.8%)	1.733s	12	1.03x
▲ Vercel	Next.js (Turbopack)	8.149s (+2.7%)	9.538s (-2.6%)	1.389s	10	1.44x

🔍 Observability: Nitro | Express | 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	2.506s (-4.7%)	3.086s (~)	0.580s	39	1.00x
🐘 Postgres	Nitro	2.603s (~)	3.058s (+0.8%)	0.455s	40	1.04x
🐘 Postgres	Next.js (Turbopack)	2.621s (-11.0% 🟢)	3.034s (-12.1% 🟢)	0.413s	40	1.05x
💻 Local	Express	3.253s (+8.9% 🔺)	3.977s (+14.8% 🔺)	0.724s	31	1.30x
💻 Local	Next.js (Turbopack)	3.335s (+4.2%)	4.009s (~)	0.674s	30	1.33x
💻 Local	Nitro	3.345s (+5.3% 🔺)	4.010s (+1.6%)	0.665s	30	1.33x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	11.093s (-5.2% 🟢)	13.189s (-1.5%)	2.096s	10	1.00x
▲ Vercel	Nitro	11.197s (-5.5% 🟢)	13.153s (-1.9%)	1.956s	10	1.01x
▲ Vercel	Next.js (Turbopack)	16.697s (-1.0%)	18.378s (-1.8%)	1.681s	7	1.51x

🔍 Observability: Express | Nitro | 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)	0.179s (-22.7% 🟢)	1.006s (~)	0.827s	60	1.00x
🐘 Postgres	Express	0.203s (-8.6% 🟢)	1.006s (~)	0.803s	60	1.13x
🐘 Postgres	Nitro	0.221s (+3.0%)	1.006s (~)	0.785s	60	1.23x
💻 Local	Express	0.524s (+16.5% 🔺)	1.005s (~)	0.481s	60	2.93x
💻 Local	Nitro	0.569s (+32.5% 🔺)	1.022s (+1.7%)	0.453s	59	3.18x
💻 Local	Next.js (Turbopack)	0.626s (~)	1.022s (+1.7%)	0.396s	59	3.50x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	0.986s (+5.9% 🔺)	2.656s (+7.2% 🔺)	1.670s	23	1.00x
▲ Vercel	Nitro	1.055s (+2.9%)	2.431s (~)	1.375s	25	1.07x
▲ Vercel	Next.js (Turbopack)	2.556s (+28.9% 🔺)	3.969s (+3.2%)	1.413s	16	2.59x

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

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Next.js (Turbopack)	0.280s (-11.9% 🟢)	1.017s (~)	0.737s	89	1.00x
🐘 Postgres	Express	0.314s (-5.9% 🟢)	1.006s (~)	0.693s	90	1.12x
🐘 Postgres	Nitro	0.327s (-2.8%)	1.006s (~)	0.679s	90	1.17x
💻 Local	Nitro	2.524s (+31.2% 🔺)	3.009s (+19.9% 🔺)	0.485s	30	9.01x
💻 Local	Express	2.575s (+18.4% 🔺)	3.011s (+8.8% 🔺)	0.436s	30	9.19x
💻 Local	Next.js (Turbopack)	2.623s (-10.4% 🟢)	3.075s (-9.0% 🟢)	0.451s	30	9.36x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.478s (+3.8%)	3.069s (+2.1%)	1.591s	30	1.00x
▲ Vercel	Nitro	1.728s (+6.8% 🔺)	3.228s (+7.4% 🔺)	1.500s	30	1.17x
▲ Vercel	Next.js (Turbopack)	3.007s (+20.6% 🔺)	4.586s (+11.6% 🔺)	1.579s	20	2.03x

🔍 Observability: Express | Nitro | 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)	0.509s (+1.9%)	3.059s (+21.6% 🔺)	2.549s	40	1.00x
🐘 Postgres	Nitro	0.524s (-4.5%)	1.078s (-4.5%)	0.553s	112	1.03x
🐘 Postgres	Express	0.547s (+0.7%)	1.139s (+1.9%)	0.592s	106	1.07x
💻 Local	Express	5.586s (-39.6% 🟢)	8.560s (-18.0% 🟢)	2.974s	15	10.96x
💻 Local	Nitro	5.919s (-38.7% 🟢)	8.959s (-16.9% 🟢)	3.041s	15	11.62x
💻 Local	Next.js (Turbopack)	6.204s (-42.6% 🟢)	8.882s (-24.4% 🟢)	2.678s	14	12.18x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.848s (+10.2% 🔺)	3.531s (+2.3%)	1.683s	34	1.00x
▲ Vercel	Express	1.958s (+10.2% 🔺)	3.690s (+0.8%)	1.732s	33	1.06x
▲ Vercel	Next.js (Turbopack)	3.964s (-2.4%)	5.503s (-6.2% 🟢)	1.539s	22	2.14x

🔍 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	🥇 Next.js (Turbopack)	1.139s (~)	1.968s (~)	0.013s (+5.0%)	2.020s (~)	0.881s	10	1.00x
🐘 Postgres	Express	1.147s (-0.5%)	1.999s (~)	0.001s (-8.3% 🟢)	2.010s (~)	0.863s	10	1.01x
💻 Local	Nitro	1.157s (~)	2.005s (~)	0.012s (+13.1% 🔺)	2.019s (~)	0.863s	10	1.02x
💻 Local	Express	1.157s (+1.4%)	2.005s (~)	0.010s (-1.9%)	2.018s (~)	0.861s	10	1.02x
🐘 Postgres	Nitro	1.159s (-2.4%)	1.997s (~)	0.002s (+25.0% 🔺)	2.011s (~)	0.852s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	1.161s (-5.0%)	2.000s (+0.6%)	0.001s (+44.4% 🔺)	2.011s (~)	0.850s	10	1.02x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.897s (-6.9% 🟢)	8.703s (+159.5% 🔺)	0.250s (-82.0% 🟢)	9.483s (+81.1% 🔺)	7.585s	10	1.00x
▲ Vercel	Nitro	2.332s (+22.0% 🔺)	8.739s (+180.9% 🔺)	0.192s (-88.3% 🟢)	9.389s (+81.7% 🔺)	7.057s	10	1.23x
▲ Vercel	Next.js (Turbopack)	3.639s (+13.4% 🔺)	8.388s (+109.9% 🔺)	0.280s (-66.1% 🟢)	10.302s (+68.5% 🔺)	6.663s	10	1.92x

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

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.533s (-3.4%)	2.002s (-1.7%)	0.005s (+5.9% 🔺)	2.027s (-1.6%)	0.494s	30	1.00x
🐘 Postgres	Next.js (Turbopack)	1.571s (-16.9% 🟢)	2.009s (-11.3% 🟢)	0.005s (-35.5% 🟢)	2.024s (-12.1% 🟢)	0.453s	30	1.02x
💻 Local	Nitro	1.585s (+1.7%)	2.009s (~)	0.012s (-5.6% 🟢)	2.025s (~)	0.439s	30	1.03x
💻 Local	Express	1.586s (+3.0%)	2.044s (+1.8%)	0.013s (-2.2%)	2.061s (+1.8%)	0.475s	30	1.03x
💻 Local	Next.js (Turbopack)	1.614s (+2.3%)	1.969s (~)	0.013s (+15.3% 🔺)	2.026s (~)	0.411s	30	1.05x
🐘 Postgres	Nitro	1.631s (+3.7%)	2.040s (+1.6%)	0.005s (-9.2% 🟢)	2.059s (+1.6%)	0.428s	30	1.06x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	5.377s (-4.7%)	7.399s (+3.3%)	0.225s (+10.4% 🔺)	8.118s (+2.5%)	2.741s	8	1.00x
▲ Vercel	Nitro	5.516s (-2.6%)	7.078s (+1.6%)	0.174s (-38.7% 🟢)	7.692s (~)	2.176s	8	1.03x
▲ Vercel	Next.js (Turbopack)	9.618s (+2.0%)	10.632s (-1.1%)	0.157s (-38.7% 🟢)	11.415s (-3.5%)	1.797s	6	1.79x

🔍 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	0.772s (-0.9%)	1.045s (-1.5%)	0.000s (+Infinity% 🔺)	1.060s (-1.8%)	0.288s	57	1.00x
🐘 Postgres	Nitro	0.821s (+6.6% 🔺)	1.147s (+3.8%)	0.000s (-37.7% 🟢)	1.161s (+3.8%)	0.340s	52	1.06x
🐘 Postgres	Next.js (Turbopack)	0.876s (-36.4% 🟢)	1.250s (-36.3% 🟢)	0.000s (NaN%)	1.258s (-37.2% 🟢)	0.382s	48	1.14x
💻 Local	Next.js (Turbopack)	1.291s (-6.5% 🟢)	1.976s (~)	0.000s (-30.0% 🟢)	2.015s (~)	0.724s	30	1.67x
💻 Local	Express	1.382s (+8.5% 🔺)	1.949s (-3.2%)	0.001s (+29.0% 🔺)	1.952s (-3.1%)	0.571s	31	1.79x
💻 Local	Nitro	1.421s (+9.5% 🔺)	1.949s (-3.2%)	0.000s (+93.5% 🔺)	1.952s (-3.2%)	0.531s	31	1.84x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.863s (-98.4% 🟢)	4.437s (-97.6% 🟢)	0.000s (+Infinity% 🔺)	4.867s (-97.4% 🟢)	2.004s	13	1.00x
▲ Vercel	Express	2.923s (+1.5%)	4.637s (+7.0% 🔺)	0.000s (NaN%)	5.137s (+6.5% 🔺)	2.214s	12	1.02x
▲ Vercel	Next.js (Turbopack)	4.809s (+13.5% 🔺)	5.698s (+4.9%)	0.000s (NaN%)	6.671s (+7.6% 🔺)	1.862s	10	1.68x

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

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.810s (+4.7%)	2.391s (+4.5%)	0.000s (+116.0% 🔺)	2.409s (+4.5%)	0.599s	25	1.00x
🐘 Postgres	Nitro	1.832s (-3.1%)	2.477s (+1.8%)	0.000s (~)	2.502s (+2.1%)	0.670s	25	1.01x
🐘 Postgres	Next.js (Turbopack)	2.307s (-18.4% 🟢)	2.820s (-16.0% 🟢)	0.000s (NaN%)	2.827s (-16.7% 🟢)	0.520s	22	1.27x
💻 Local	Next.js (Turbopack)	3.394s (-2.6%)	4.126s (+3.4%)	0.001s (+13.3% 🔺)	4.163s (+3.2%)	0.769s	15	1.88x
💻 Local	Nitro	3.413s (-7.4% 🟢)	4.028s (-6.6% 🟢)	0.001s (-17.0% 🟢)	4.031s (-6.7% 🟢)	0.618s	15	1.89x
💻 Local	Express	3.471s (+2.2%)	3.965s (-1.4%)	0.001s (+3.1%)	3.969s (-1.5%)	0.497s	16	1.92x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.089s (-6.0% 🟢)	5.537s (-6.0% 🟢)	0.000s (NaN%)	5.941s (-8.0% 🟢)	1.852s	11	1.00x
▲ Vercel	Express	4.265s (-1.3%)	5.981s (+5.3% 🔺)	0.000s (NaN%)	6.476s (+5.4% 🔺)	2.211s	10	1.04x
▲ Vercel	Next.js (Turbopack)	6.662s (-4.0%)	7.647s (-3.5%)	0.000s (NaN%)	8.635s (-2.3%)	1.973s	7	1.63x

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

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Express	8/21
🐘 Postgres	Express	11/21
▲ Vercel	Nitro	11/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	18/21
Next.js (Turbopack)	🐘 Postgres	16/21
Nitro	🐘 Postgres	15/21

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)
🌐 Platformatic: Community world (local development)

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fix(next): derive workflow project root

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test(next): clean temp root after leaving app dir

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chore(next): simplify project root detection

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NathanColosimo mentioned this pull request Jun 30, 2026

fix(next): respect basePath for workflow URLs #2732

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🧪 E2E Test Results

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📊 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)

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