fix(vitest): derive workflow cwd from project root by NathanColosimo · Pull Request #2726 · vercel/workflow

NathanColosimo · 2026-06-30T21:56:57Z

Summary

derive @workflow/vitest cwd from the Vitest/Vite project root when available
keep explicit cwd/rootDir/dataDir/outDir overrides intact
keep generated bundle transform excludes in sync with the resolved outDir
update v4/v5 Vitest API docs and add a patch changeset

Fixes part of #2716.

Tests

pnpm --filter @workflow/vitest test
pnpm turbo build --filter @workflow/vitest
pnpm biome check packages/vitest/src/index.ts packages/vitest/src/options.ts packages/vitest/src/global-setup.ts packages/vitest/src/index.test.ts docs/content/docs/v4/api-reference/vitest/index.mdx docs/content/docs/v5/api-reference/vitest/index.mdx .changeset/fresh-lamps-heal.md

Docs Preview

Page	Preview
v4 Vitest API Reference	https://workflow-docs-git-codex-2716-vitest-root.vercel.sh/docs/api-reference/vitest
v5 Vitest API Reference	https://workflow-docs-git-codex-2716-vitest-root.vercel.sh/v5/docs/api-reference/vitest

vercel · 2026-06-30T21:57:02Z

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changeset-bot · 2026-06-30T21:57:04Z

🦋 Changeset detected

Latest commit: 7d7ffa3

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

This PR includes changesets to release 1 package

Name	Type
@workflow/vitest	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 · 2026-06-30T21:57:16Z

📊 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	🥇 Nitro	0.043s (-1.8%)	1.006s (~)	0.962s	10	1.00x
💻 Local	Express	0.045s (-1.7%)	1.005s (~)	0.960s	10	1.05x
💻 Local	Next.js (Turbopack)	0.058s (+7.8% 🔺)	1.008s (~)	0.950s	10	1.34x
🐘 Postgres	Express	0.062s (-14.8% 🟢)	1.012s (~)	0.950s	10	1.44x
🐘 Postgres	Nitro	0.067s (+6.7% 🔺)	1.012s (~)	0.945s	10	1.55x
🐘 Postgres	Next.js (Turbopack)	0.068s (-38.4% 🟢)	1.020s (-1.9%)	0.952s	10	1.57x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	0.244s (+20.8% 🔺)	2.080s (+5.2% 🔺)	1.835s	10	1.00x
▲ Vercel	Next.js (Turbopack)	0.261s (-43.6% 🟢)	1.581s (-38.4% 🟢)	1.320s	10	1.07x
▲ Vercel	Nitro	0.279s (-23.7% 🟢)	1.650s (-9.9% 🟢)	1.371s	10	1.14x

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

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.079s (~)	2.007s (~)	0.928s	10	1.00x
💻 Local	Express	1.081s (~)	2.006s (~)	0.925s	10	1.00x
🐘 Postgres	Express	1.090s (-0.7%)	2.010s (~)	0.920s	10	1.01x
🐘 Postgres	Nitro	1.098s (+0.5%)	2.010s (~)	0.912s	10	1.02x
💻 Local	Next.js (Turbopack)	1.101s (+1.9%)	2.008s (~)	0.906s	10	1.02x
🐘 Postgres	Next.js (Turbopack)	1.138s (+3.3%)	2.037s (+1.3%)	0.899s	10	1.05x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.375s (+0.9%)	2.767s (+5.1% 🔺)	1.392s	10	1.00x
▲ Vercel	Nitro	1.444s (+7.3% 🔺)	2.758s (-2.5%)	1.314s	10	1.05x
▲ Vercel	Next.js (Turbopack)	2.555s (+13.8% 🔺)	3.988s (+4.5%)	1.433s	10	1.86x

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

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	10.434s (~)	11.013s (~)	0.579s	3	1.00x
💻 Local	Nitro	10.439s (~)	11.022s (~)	0.583s	3	1.00x
💻 Local	Express	10.443s (~)	11.022s (~)	0.579s	3	1.00x
🐘 Postgres	Nitro	10.499s (~)	11.022s (~)	0.522s	3	1.01x
💻 Local	Next.js (Turbopack)	10.558s (+0.8%)	11.027s (~)	0.468s	3	1.01x
🐘 Postgres	Next.js (Turbopack)	10.592s (+1.9%)	11.015s (~)	0.423s	3	1.02x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	11.532s (-3.1%)	12.982s (-5.0% 🟢)	1.451s	3	1.00x
▲ Vercel	Express	11.591s (-3.9%)	13.593s (~)	2.002s	3	1.01x
▲ Vercel	Next.js (Turbopack)	12.999s (+2.6%)	15.192s (+3.1%)	2.193s	2	1.13x

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

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	13.573s (~)	14.026s (~)	0.454s	5	1.00x
🐘 Postgres	Express	13.592s (~)	14.020s (~)	0.428s	5	1.00x
🐘 Postgres	Nitro	13.651s (~)	14.019s (~)	0.368s	5	1.01x
💻 Local	Express	13.682s (~)	14.026s (~)	0.344s	5	1.01x
🐘 Postgres	Next.js (Turbopack)	13.870s (+1.6%)	14.427s (+2.8%)	0.557s	5	1.02x
💻 Local	Next.js (Turbopack)	13.936s (+2.0%)	14.029s (~)	0.093s	5	1.03x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	16.131s (-3.8%)	17.935s (-2.7%)	1.804s	4	1.00x
▲ Vercel	Express	16.272s (-1.0%)	18.233s (-2.6%)	1.961s	4	1.01x
▲ Vercel	Next.js (Turbopack)	17.860s (+3.8%)	19.682s (+1.9%)	1.823s	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
💻 Local	🥇 Nitro	12.078s (~)	13.024s (~)	0.946s	7	1.00x
🐘 Postgres	Nitro	12.195s (~)	13.019s (~)	0.824s	7	1.01x
🐘 Postgres	Next.js (Turbopack)	12.198s (-1.9%)	12.647s (-2.1%)	0.450s	8	1.01x
🐘 Postgres	Express	12.342s (-1.1%)	13.020s (~)	0.678s	7	1.02x
💻 Local	Express	12.480s (+2.5%)	13.168s (+1.1%)	0.687s	7	1.03x
💻 Local	Next.js (Turbopack)	12.772s (+4.9%)	13.028s (~)	0.256s	7	1.06x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	17.282s (~)	18.988s (~)	1.706s	5	1.00x
▲ Vercel	Express	17.392s (-1.3%)	18.800s (-2.7%)	1.408s	5	1.01x
▲ Vercel	Next.js (Turbopack)	19.829s (~)	21.540s (-1.5%)	1.711s	5	1.15x

🔍 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	🥇 Express	1.177s (~)	2.008s (~)	0.831s	15	1.00x
🐘 Postgres	Nitro	1.183s (-1.6%)	2.008s (~)	0.825s	15	1.01x
💻 Local	Express	1.379s (-0.9%)	2.006s (~)	0.627s	15	1.17x
🐘 Postgres	Next.js (Turbopack)	1.387s (+9.0% 🔺)	2.017s (-1.1%)	0.630s	15	1.18x
💻 Local	Nitro	1.404s (~)	2.006s (~)	0.602s	15	1.19x
💻 Local	Next.js (Turbopack)	1.465s (+3.0%)	2.008s (~)	0.542s	15	1.24x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.077s (-5.1% 🟢)	3.536s (-6.9% 🟢)	1.460s	9	1.00x
▲ Vercel	Express	2.667s (+35.1% 🔺)	4.019s (+7.7% 🔺)	1.351s	8	1.28x
▲ Vercel	Next.js (Turbopack)	3.932s (+18.6% 🔺)	5.543s (+8.2% 🔺)	1.612s	6	1.89x

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

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.305s (-3.7%)	2.222s (-4.0%)	0.918s	14	1.00x
🐘 Postgres	Nitro	1.385s (+4.7%)	2.592s (-8.3% 🟢)	1.208s	12	1.06x
🐘 Postgres	Next.js (Turbopack)	1.475s (+10.8% 🔺)	2.604s (+5.0% 🔺)	1.129s	12	1.13x
💻 Local	Nitro	2.269s (-10.0% 🟢)	3.009s (-3.2%)	0.740s	10	1.74x
💻 Local	Express	2.331s (-9.7% 🟢)	3.009s (~)	0.677s	10	1.79x
💻 Local	Next.js (Turbopack)	2.574s (-6.1% 🟢)	3.011s (-3.2%)	0.437s	10	1.97x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.746s (+3.6%)	4.719s (+17.3% 🔺)	1.973s	7	1.00x
▲ Vercel	Nitro	2.952s (+23.5% 🔺)	4.131s (+7.9% 🔺)	1.179s	8	1.08x
▲ Vercel	Next.js (Turbopack)	4.164s (+14.8% 🔺)	5.743s (-0.6%)	1.579s	6	1.52x

🔍 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	🥇 Express	1.574s (-0.9%)	4.137s (+3.1%)	2.562s	8	1.00x
🐘 Postgres	Nitro	1.630s (+2.6%)	4.012s (~)	2.383s	8	1.04x
🐘 Postgres	Next.js (Turbopack)	2.252s (+23.7% 🔺)	4.596s (-6.0% 🟢)	2.344s	7	1.43x
💻 Local	Express	3.450s (-48.2% 🟢)	4.726s (-36.3% 🟢)	1.276s	7	2.19x
💻 Local	Nitro	4.250s (-30.9% 🟢)	4.871s (-28.6% 🟢)	0.620s	7	2.70x
💻 Local	Next.js (Turbopack)	5.384s (-31.3% 🟢)	6.019s (-24.9% 🟢)	0.635s	5	3.42x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.675s (+1.1%)	4.251s (+0.5%)	1.576s	8	1.00x
▲ Vercel	Express	2.809s (+4.8%)	4.717s (+8.8% 🔺)	1.907s	7	1.05x
▲ Vercel	Next.js (Turbopack)	4.286s (+3.3%)	5.808s (-4.9%)	1.522s	6	1.60x

🔍 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	🥇 Express	1.166s (-1.2%)	2.008s (~)	0.842s	15	1.00x
🐘 Postgres	Nitro	1.184s (+1.0%)	2.008s (~)	0.823s	15	1.02x
🐘 Postgres	Next.js (Turbopack)	1.281s (+8.3% 🔺)	2.011s (~)	0.730s	15	1.10x
💻 Local	Nitro	1.423s (+3.8%)	2.007s (~)	0.584s	15	1.22x
💻 Local	Express	1.469s (+1.6%)	2.006s (~)	0.537s	15	1.26x
💻 Local	Next.js (Turbopack)	1.562s (+9.3% 🔺)	2.008s (~)	0.446s	15	1.34x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.888s (~)	3.537s (-4.7%)	1.650s	9	1.00x
▲ Vercel	Nitro	1.991s (+3.9%)	3.509s (-0.7%)	1.518s	9	1.05x
▲ Vercel	Next.js (Turbopack)	3.152s (+2.4%)	4.831s (-2.1%)	1.679s	7	1.67x

🔍 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	🥇 Express	1.289s (-1.4%)	2.393s (-3.2%)	1.104s	13	1.00x
🐘 Postgres	Nitro	1.324s (+0.8%)	2.509s (-3.2%)	1.185s	12	1.03x
🐘 Postgres	Next.js (Turbopack)	1.449s (+3.1%)	2.756s (+8.8% 🔺)	1.307s	11	1.12x
💻 Local	Express	2.371s (-10.1% 🟢)	2.918s (-3.0%)	0.547s	11	1.84x
💻 Local	Nitro	2.387s (-12.8% 🟢)	3.009s (-10.0% 🟢)	0.622s	10	1.85x
💻 Local	Next.js (Turbopack)	2.785s (+4.3%)	3.010s (-6.2% 🟢)	0.225s	10	2.16x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.192s (-12.6% 🟢)	3.570s (-9.6% 🟢)	1.378s	9	1.00x
▲ Vercel	Nitro	2.233s (-3.7%)	3.670s (-2.9%)	1.437s	9	1.02x
▲ Vercel	Next.js (Turbopack)	3.567s (+4.7%)	4.895s (-7.1% 🟢)	1.328s	7	1.63x

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

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.605s (+0.8%)	4.010s (-3.0%)	2.405s	8	1.00x
🐘 Postgres	Nitro	1.605s (-2.4%)	4.011s (-6.7% 🟢)	2.406s	8	1.00x
🐘 Postgres	Next.js (Turbopack)	2.396s (-8.1% 🟢)	5.026s (-3.9%)	2.630s	6	1.49x
💻 Local	Nitro	5.192s (-19.4% 🟢)	6.014s (-18.9% 🟢)	0.821s	5	3.24x
💻 Local	Express	5.526s (-12.8% 🟢)	6.214s (-8.8% 🟢)	0.688s	5	3.44x
💻 Local	Next.js (Turbopack)	6.359s (~)	7.220s (~)	0.861s	5	3.96x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.630s (-7.4% 🟢)	4.229s (-3.6%)	1.600s	8	1.00x
▲ Vercel	Express	2.873s (+1.5%)	4.324s (-5.1% 🟢)	1.451s	8	1.09x
▲ Vercel	Next.js (Turbopack)	4.156s (-5.0% 🟢)	6.087s (-1.4%)	1.931s	5	1.58x

🔍 Observability: Nitro | Express | 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	0.529s (-4.3%)	1.023s (+1.7%)	0.495s	59	1.00x
💻 Local	Nitro	0.548s (-9.2% 🟢)	1.005s (-3.3%)	0.457s	60	1.04x
🐘 Postgres	Nitro	0.553s (-1.9%)	1.023s (~)	0.470s	59	1.05x
🐘 Postgres	Next.js (Turbopack)	0.560s (-7.7% 🟢)	1.069s (+1.7%)	0.509s	57	1.06x
💻 Local	Express	0.570s (+3.3%)	1.005s (~)	0.434s	60	1.08x
💻 Local	Next.js (Turbopack)	0.744s (+12.5% 🔺)	1.006s (-4.9%)	0.263s	60	1.41x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.477s (-10.0% 🟢)	3.683s (-17.3% 🟢)	1.206s	17	1.00x
▲ Vercel	Express	2.498s (-7.2% 🟢)	3.928s (-8.4% 🟢)	1.429s	16	1.01x
▲ Vercel	Next.js (Turbopack)	3.851s (+6.7% 🔺)	5.398s (~)	1.547s	12	1.55x

🔍 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	1.246s (-7.8% 🟢)	2.007s (-1.1%)	0.761s	45	1.00x
🐘 Postgres	Nitro	1.336s (+1.8%)	2.030s (-1.1%)	0.694s	45	1.07x
💻 Local	Nitro	1.371s (-4.1%)	2.006s (~)	0.635s	45	1.10x
🐘 Postgres	Next.js (Turbopack)	1.401s (-5.9% 🟢)	2.109s (-1.3%)	0.709s	43	1.12x
💻 Local	Express	1.442s (+3.0%)	2.006s (~)	0.563s	45	1.16x
💻 Local	Next.js (Turbopack)	1.869s (+25.5% 🔺)	2.077s (+3.5%)	0.208s	44	1.50x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	5.666s (-8.0% 🟢)	7.120s (-9.3% 🟢)	1.454s	13	1.00x
▲ Vercel	Nitro	5.742s (-6.4% 🟢)	7.178s (-5.3% 🟢)	1.437s	13	1.01x
▲ Vercel	Next.js (Turbopack)	8.156s (+2.8%)	9.860s (+0.7%)	1.704s	10	1.44x

🔍 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	2.436s (-7.4% 🟢)	3.059s (-0.8%)	0.623s	40	1.00x
🐘 Postgres	Nitro	2.643s (+1.5%)	3.058s (+0.8%)	0.415s	40	1.09x
💻 Local	Nitro	2.968s (-6.6% 🟢)	3.342s (-15.3% 🟢)	0.374s	36	1.22x
💻 Local	Express	3.243s (+8.6% 🔺)	3.944s (+13.8% 🔺)	0.702s	31	1.33x
🐘 Postgres	Next.js (Turbopack)	3.600s (+22.2% 🔺)	4.057s (+17.6% 🔺)	0.458s	30	1.48x
💻 Local	Next.js (Turbopack)	3.889s (+21.5% 🔺)	4.218s (+5.2% 🔺)	0.328s	29	1.60x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	10.984s (-6.2% 🟢)	12.908s (-3.6%)	1.924s	10	1.00x
▲ Vercel	Nitro	11.091s (-6.4% 🟢)	12.687s (-5.4% 🟢)	1.597s	10	1.01x
▲ Vercel	Next.js (Turbopack)	16.550s (-1.9%)	18.619s (~)	2.070s	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	🥇 Express	0.202s (-9.2% 🟢)	1.006s (~)	0.804s	60	1.00x
🐘 Postgres	Nitro	0.212s (-1.1%)	1.006s (~)	0.794s	60	1.05x
🐘 Postgres	Next.js (Turbopack)	0.224s (-3.3%)	1.015s (~)	0.791s	60	1.11x
💻 Local	Express	0.505s (+12.2% 🔺)	1.004s (~)	0.500s	60	2.50x
💻 Local	Nitro	0.534s (+24.3% 🔺)	1.005s (~)	0.470s	60	2.65x
💻 Local	Next.js (Turbopack)	0.738s (+17.3% 🔺)	1.006s (~)	0.268s	60	3.66x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.066s (+4.0%)	2.338s (-4.1%)	1.272s	26	1.00x
▲ Vercel	Express	1.108s (+19.0% 🔺)	2.411s (-2.7%)	1.303s	25	1.04x
▲ Vercel	Next.js (Turbopack)	2.282s (+15.1% 🔺)	3.719s (-3.3%)	1.436s	17	2.14x

🔍 Observability: Nitro | Express | 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)	0.300s (-5.7% 🟢)	1.012s (-0.9%)	0.712s	89	1.00x
🐘 Postgres	Express	0.325s (-2.6%)	1.017s (+1.1%)	0.693s	89	1.08x
🐘 Postgres	Nitro	0.334s (-0.7%)	1.006s (~)	0.672s	90	1.11x
💻 Local	Nitro	2.388s (+24.1% 🔺)	3.008s (+19.9% 🔺)	0.620s	30	7.96x
💻 Local	Express	2.452s (+12.7% 🔺)	3.009s (+8.8% 🔺)	0.557s	30	8.17x
💻 Local	Next.js (Turbopack)	3.123s (+6.7% 🔺)	3.889s (+15.1% 🔺)	0.766s	24	10.41x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.595s (+12.1% 🔺)	2.875s (-4.3%)	1.280s	32	1.00x
▲ Vercel	Nitro	1.703s (+5.2% 🔺)	2.975s (-1.0%)	1.273s	31	1.07x
▲ Vercel	Next.js (Turbopack)	2.788s (+11.8% 🔺)	4.550s (+10.8% 🔺)	1.762s	20	1.75x

🔍 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	🥇 Express	0.492s (-9.4% 🟢)	1.068s (-4.4%)	0.576s	113	1.00x
🐘 Postgres	Nitro	0.533s (-2.9%)	1.150s (+1.9%)	0.616s	105	1.08x
🐘 Postgres	Next.js (Turbopack)	0.633s (+26.5% 🔺)	2.470s (-1.8%)	1.837s	49	1.29x
💻 Local	Express	5.157s (-44.2% 🟢)	8.223s (-21.3% 🟢)	3.066s	15	10.47x
💻 Local	Nitro	5.234s (-45.8% 🟢)	8.022s (-25.6% 🟢)	2.788s	15	10.63x
💻 Local	Next.js (Turbopack)	7.296s (-32.4% 🟢)	10.698s (-9.0% 🟢)	3.402s	12	14.82x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.868s (+5.1% 🔺)	3.601s (-1.6%)	1.733s	34	1.00x
▲ Vercel	Nitro	2.028s (+21.0% 🔺)	3.650s (+5.8% 🔺)	1.622s	33	1.09x
▲ Vercel	Next.js (Turbopack)	4.223s (+4.0%)	5.943s (+1.3%)	1.719s	21	2.26x

🔍 Observability: Express | Nitro | 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	🥇 Nitro	1.136s (-1.8%)	2.004s (~)	0.010s (-2.8%)	2.017s (~)	0.881s	10	1.00x
🐘 Postgres	Express	1.148s (~)	1.999s (~)	0.001s (+8.3% 🔺)	2.010s (~)	0.862s	10	1.01x
💻 Local	Express	1.153s (+1.1%)	2.005s (~)	0.012s (+10.4% 🔺)	2.019s (~)	0.866s	10	1.02x
🐘 Postgres	Nitro	1.167s (-1.7%)	1.995s (~)	0.001s (~)	2.011s (~)	0.844s	10	1.03x
💻 Local	Next.js (Turbopack)	1.168s (+2.5%)	1.961s (~)	0.013s (+12.5% 🔺)	2.022s (~)	0.855s	10	1.03x
🐘 Postgres	Next.js (Turbopack)	1.201s (-1.7%)	1.986s (~)	0.001s (~)	2.015s (~)	0.815s	10	1.06x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.867s (-2.3%)	8.415s (+170.4% 🔺)	0.273s (-83.3% 🟢)	9.153s (+77.2% 🔺)	7.286s	10	1.00x
▲ Vercel	Express	1.941s (-4.8%)	8.504s (+153.6% 🔺)	0.254s (-81.6% 🟢)	9.218s (+76.1% 🔺)	7.277s	10	1.04x
▲ Vercel	Next.js (Turbopack)	3.600s (+12.1% 🔺)	8.960s (+124.2% 🔺)	0.635s (-23.1% 🟢)	11.249s (+84.0% 🔺)	7.649s	10	1.93x

🔍 Observability: Nitro | Express | 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	1.531s (-3.5%)	2.004s (-1.6%)	0.005s (+6.6% 🔺)	2.026s (-1.6%)	0.495s	30	1.00x
💻 Local	Nitro	1.532s (-1.8%)	2.010s (~)	0.013s (-2.3%)	2.026s (~)	0.494s	30	1.00x
🐘 Postgres	Nitro	1.565s (~)	2.002s (~)	0.005s (-9.8% 🟢)	2.026s (~)	0.460s	30	1.02x
💻 Local	Express	1.579s (+2.5%)	2.039s (+1.5%)	0.012s (-12.9% 🟢)	2.058s (+1.7%)	0.480s	30	1.03x
💻 Local	Next.js (Turbopack)	1.738s (+10.1% 🔺)	1.961s (~)	0.015s (+28.8% 🔺)	2.030s (~)	0.292s	30	1.13x
🐘 Postgres	Next.js (Turbopack)	2.165s (+14.6% 🔺)	2.503s (+10.6% 🔺)	0.004s (-43.8% 🟢)	2.529s (+9.9% 🔺)	0.364s	24	1.41x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.435s (-4.1%)	7.187s (+3.2%)	0.059s (-79.3% 🟢)	7.670s (~)	2.235s	8	1.00x
▲ Vercel	Express	5.435s (-3.6%)	6.859s (-4.3%)	0.142s (-30.3% 🟢)	7.424s (-6.3% 🟢)	1.988s	9	1.00x
▲ Vercel	Next.js (Turbopack)	9.661s (+2.5%)	10.988s (+2.2%)	0.093s (-63.9% 🟢)	12.052s (+1.9%)	2.392s	5	1.78x

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

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	0.749s (-3.8%)	1.046s (-1.3%)	0.000s (+Infinity% 🔺)	1.060s (-1.8%)	0.311s	57	1.00x
🐘 Postgres	Nitro	0.818s (+6.2% 🔺)	1.103s (~)	0.000s (-80.0% 🟢)	1.120s (~)	0.302s	54	1.09x
🐘 Postgres	Next.js (Turbopack)	1.247s (-9.4% 🟢)	1.732s (-11.7% 🟢)	0.000s (+Infinity% 🔺)	1.773s (-11.5% 🟢)	0.526s	34	1.67x
💻 Local	Express	1.279s (~)	1.947s (-3.2%)	0.000s (-51.6% 🟢)	1.950s (-3.2%)	0.671s	31	1.71x
💻 Local	Nitro	1.307s (+0.7%)	1.919s (-4.7%)	0.000s (-6.3% 🟢)	1.922s (-4.7%)	0.615s	32	1.75x
💻 Local	Next.js (Turbopack)	1.577s (+14.1% 🔺)	2.006s (+1.4%)	0.000s (+40.0% 🔺)	2.054s (+1.9%)	0.478s	30	2.11x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.795s (-2.9%)	4.321s (~)	0.000s (+Infinity% 🔺)	4.755s (-1.4%)	1.960s	13	1.00x
▲ Vercel	Nitro	2.849s (-98.5% 🟢)	4.309s (-97.7% 🟢)	0.000s (+Infinity% 🔺)	4.748s (-97.4% 🟢)	1.900s	13	1.02x
▲ Vercel	Next.js (Turbopack)	5.025s (+18.6% 🔺)	6.025s (+11.0% 🔺)	0.000s (NaN%)	6.883s (+11.0% 🔺)	1.858s	9	1.80x

🔍 Observability: Express | Nitro | 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	1.736s (~)	2.300s (+0.5%)	0.000s (+3.8%)	2.335s (+1.3%)	0.599s	26	1.00x
🐘 Postgres	Nitro	2.088s (+10.4% 🔺)	2.765s (+13.6% 🔺)	0.000s (-100.0% 🟢)	2.783s (+13.6% 🔺)	0.695s	22	1.20x
🐘 Postgres	Next.js (Turbopack)	2.413s (-14.6% 🟢)	2.854s (-15.0% 🟢)	0.000s (+Infinity% 🔺)	2.917s (-14.0% 🟢)	0.504s	21	1.39x
💻 Local	Nitro	3.140s (-14.8% 🟢)	3.672s (-14.9% 🟢)	0.000s (-35.9% 🟢)	3.676s (-14.9% 🟢)	0.536s	17	1.81x
💻 Local	Express	3.324s (-2.2%)	3.966s (-1.4%)	0.001s (-25.0% 🟢)	3.969s (-1.5%)	0.645s	16	1.91x
💻 Local	Next.js (Turbopack)	4.109s (+17.8% 🔺)	4.564s (+14.4% 🔺)	0.001s (-28.6% 🟢)	4.609s (+14.3% 🔺)	0.501s	14	2.37x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	4.097s (-5.2% 🟢)	5.636s (-0.8%)	0.000s (NaN%)	6.061s (-1.4%)	1.964s	10	1.00x
▲ Vercel	Nitro	4.225s (-2.8%)	5.652s (-4.0%)	0.000s (+Infinity% 🔺)	6.070s (-6.0% 🟢)	1.845s	10	1.03x
▲ Vercel	Next.js (Turbopack)	6.941s (~)	8.197s (+3.4%)	0.000s (+Infinity% 🔺)	9.076s (+2.7%)	2.135s	7	1.69x

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

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	15/21
🐘 Postgres	Express	19/21
▲ Vercel	Express	11/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	19/21
Next.js (Turbopack)	🐘 Postgres	16/21
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)
🌐 Platformatic: Community world (local development)

📋 View full workflow run

github-actions · 2026-06-30T21:57:17Z

🧪 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

fix(vitest): derive workflow cwd from project root

d0d60aa

vercel Bot deployed to Preview – example-nextjs-workflow-turbopack June 30, 2026 21:57 View deployment

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vercel Bot deployed to Preview – workbench-fastify-workflow June 30, 2026 21:57 View deployment

vercel Bot deployed to Preview – workflow-tarballs June 30, 2026 21:58 View deployment

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vercel Bot deployed to Preview – example-workflow June 30, 2026 21:58 View deployment

vercel Bot deployed to Preview – workbench-tanstack-start-workflow June 30, 2026 21:58 View deployment

vercel Bot deployed to Preview – workbench-vite-workflow June 30, 2026 21:58 View deployment

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vercel Bot deployed to Preview – example-nextjs-workflow-webpack June 30, 2026 21:58 View deployment

vercel Bot deployed to Preview – workflow-docs June 30, 2026 21:58 View deployment

vercel Bot deployed to Preview – workflow-swc-playground June 30, 2026 22:00 View deployment

chore(vitest): simplify project root options

7d7ffa3

vercel Bot deployed to Preview – example-nextjs-workflow-turbopack June 30, 2026 23:40 View deployment

vercel Bot deployed to Preview – workflow-web June 30, 2026 23:40 View deployment

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vercel Bot deployed to Preview – workbench-nitro-workflow June 30, 2026 23:40 View deployment

vercel Bot deployed to Preview – workflow-tarballs June 30, 2026 23:40 View deployment

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vercel Bot deployed to Preview – workbench-fastify-workflow June 30, 2026 23:41 View deployment

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vercel Bot deployed to Preview – workbench-sveltekit-workflow June 30, 2026 23:41 View deployment

vercel Bot deployed to Preview – example-workflow June 30, 2026 23:41 View deployment

vercel Bot deployed to Preview – workbench-nuxt-workflow June 30, 2026 23:41 View deployment

vercel Bot deployed to Preview – example-nextjs-workflow-webpack June 30, 2026 23:41 View deployment

vercel Bot deployed to Preview – workflow-docs June 30, 2026 23:42 View deployment

vercel Bot deployed to Preview – workflow-swc-playground June 30, 2026 23:43 View deployment

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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)

Summary

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