[tarballs] Build workspace deps before packing by VaguelySerious · Pull Request #1908 · vercel/workflow

VaguelySerious · 2026-05-04T05:13:00Z

Summary

The tarballs Vercel project's vercel.json sets

"buildCommand": "pnpm --filter tarballs build"

which only runs the tarballs package's build script (node scripts/pack.ts) and does not trigger turbo's dependsOn: ["^build"] chain. As a result every preview tarball gets packed with an empty dist/ directory — only bin/, package.json, README.md, and docs/ make it in. Downstream installs then fail with errors like:

Cannot find module '/.../node_modules/workflow/dist/next.cjs'

The old docs-based pipeline did not hit this because Vercel detected docs as a Next.js framework, ran turbo for it (which fans out via ^build), and pack.ts was wired as a prebuild step that ran after workspace deps were already built. Splitting tarballs out of docs in #1893 dropped that side-effect.

The fix is one line: switch the build command to

"buildCommand": "pnpm turbo build --filter=tarballs"

so turbo evaluates the build task for tarballs, fans out via ^build to compile every workspace dependency first, and only then runs tarballs#build (pack.ts) against the populated dist/ directories.

Test plan

pnpm turbo build --filter=tarballs locally — output tarballs contain the full dist/ tree (verified package/dist/next.cjs is present in tarballs/public/workflow.tgz).
Preview deployment for this branch produces tarballs that resolve workflow/next correctly when installed in a downstream Next.js app.
CI checks pass.

🤖 Generated with Claude Code

The standalone tarballs project's vercel.json sets "buildCommand": "pnpm --filter tarballs build", which only runs the tarballs package's build script (node scripts/pack.ts) and does not trigger turbo's `dependsOn: ["^build"]` chain. Every workspace package gets packed with an empty dist/ directory, so downstream installs fail with errors like "Cannot find module '<pkg>/dist/next.cjs'". The previous docs-based pipeline didn't hit this because Vercel detected docs as a Next.js framework, ran turbo for it, and pack.ts was wired as a prebuild step that ran after deps were already built. Switch the buildCommand to `pnpm turbo build --filter=tarballs` so turbo evaluates the build task for tarballs, fans out via ^build to compile every workspace dependency first, and only then runs tarballs#build (pack.ts) against the populated dist/ directories. Verified locally: a fresh build now produces tarballs containing the full dist/ tree (including dist/next.cjs). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

vercel · 2026-05-04T05:13:01Z

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

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	May 4, 2026 5:16am
example-nextjs-workflow-webpack	Ready	Preview, Comment	May 4, 2026 5:16am
example-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-astro-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-express-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-fastify-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-hono-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-nitro-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-nuxt-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-sveltekit-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-tanstack-start-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-vite-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workflow-docs	Ready	Preview, Comment, Open in v0	May 4, 2026 5:16am
workflow-swc-playground	Ready	Preview, Comment	May 4, 2026 5:16am
workflow-tarballs	Ready	Preview, Comment	May 4, 2026 5:16am
workflow-web	Ready	Preview, Comment	May 4, 2026 5:16am

changeset-bot · 2026-05-04T05:13:05Z

🦋 Changeset detected

Latest commit: 881c6f9

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

This PR includes changesets to release 0 packages

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

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 · 2026-05-04T05:13:11Z

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Skipped	Total
✅ ▲ Vercel Production	1011	67	1078
✅ 💻 Local Development	1090	86	1176
✅ 📦 Local Production	1090	86	1176
✅ 🐘 Local Postgres	1090	86	1176
✅ 🪟 Windows	98	0	98
✅ 📋 Other	552	36	588
Total	4931	361	5292

Details by Category

✅ ▲ Vercel Production

App	Passed	Skipped
✅ astro	91	7
✅ example	91	7
✅ express	91	7
✅ fastify	91	7
✅ hono	91	7
✅ nextjs-turbopack	96	2
✅ nextjs-webpack	96	2
✅ nitro	91	7
✅ nuxt	91	7
✅ sveltekit	91	7
✅ vite	91	7

✅ 💻 Local Development

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	98	0	0

✅ 📋 Other

App	Passed	Skipped
✅ e2e-local-dev-nest-stable	92	6
✅ e2e-local-dev-tanstack-start-stable	92	6
✅ e2e-local-postgres-nest-stable	92	6
✅ e2e-local-postgres-tanstack-start-stable	92	6
✅ e2e-local-prod-nest-stable	92	6
✅ e2e-local-prod-tanstack-start-stable	92	6

📋 View full workflow run

github-actions · 2026-05-04T05:13:16Z

📊 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	0.041s (-4.4%)	1.006s (~)	0.965s	10	1.00x
💻 Local	Express	0.045s (+1.6%)	1.005s (~)	0.960s	10	1.09x
🐘 Postgres	Nitro	0.058s (-38.8% 🟢)	1.010s (-3.2%)	0.952s	10	1.42x
🐘 Postgres	Express	0.063s (+9.3% 🔺)	1.009s (~)	0.946s	10	1.54x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	0.265s (-35.4% 🟢)	2.640s (+5.2% 🔺)	2.375s	10	1.00x
▲ Vercel	Express	0.292s (+24.0% 🔺)	2.562s (+20.0% 🔺)	2.270s	10	1.10x

🔍 Observability: Nitro | Express

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.129s (~)	2.006s (~)	0.877s	10	1.00x
💻 Local	Express	1.139s (+1.2%)	2.006s (~)	0.867s	10	1.01x
🐘 Postgres	Express	1.139s (-0.6%)	2.008s (~)	0.869s	10	1.01x
🐘 Postgres	Nitro	1.143s (~)	2.010s (~)	0.866s	10	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.923s (-50.6% 🟢)	3.880s (-34.3% 🟢)	1.957s	10	1.00x
▲ Vercel	Express	1.950s (+4.0%)	3.611s (-5.2% 🟢)	1.661s	10	1.01x

🔍 Observability: Nitro | Express

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	10.902s (-0.6%)	11.022s (~)	0.120s	3	1.00x
🐘 Postgres	Nitro	10.924s (~)	11.023s (~)	0.099s	3	1.00x
💻 Local	Nitro	10.938s (~)	11.024s (~)	0.086s	3	1.00x
💻 Local	Express	10.971s (~)	11.358s (+3.0%)	0.388s	3	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	17.794s (-25.0% 🟢)	19.925s (-20.7% 🟢)	2.132s	2	1.00x
▲ Vercel	Express	20.665s (+21.7% 🔺)	22.483s (+12.3% 🔺)	1.818s	2	1.16x

🔍 Observability: Nitro | Express

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	14.543s (~)	15.023s (~)	0.480s	4	1.00x
🐘 Postgres	Nitro	14.614s (~)	15.022s (~)	0.409s	4	1.00x
💻 Local	Nitro	15.052s (~)	15.780s (-1.6%)	0.728s	4	1.04x
💻 Local	Express	15.053s (+0.5%)	15.781s (+5.0%)	0.728s	4	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	34.782s (-46.0% 🟢)	36.761s (-44.8% 🟢)	1.980s	2	1.00x
▲ Vercel	Express	37.878s (-24.7% 🟢)	40.056s (-23.8% 🟢)	2.178s	2	1.09x

🔍 Observability: Nitro | Express

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	13.905s (-0.7%)	14.165s (-2.9%)	0.260s	7	1.00x
🐘 Postgres	Nitro	14.197s (+1.6%)	15.024s (+5.0%)	0.828s	6	1.02x
💻 Local	Nitro	16.877s (+0.6%)	17.198s (+1.0%)	0.321s	6	1.21x
💻 Local	Express	16.948s (+2.1%)	17.030s (~)	0.082s	6	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	54.672s (-54.9% 🟢)	56.262s (-54.5% 🟢)	1.590s	2	1.00x
▲ Vercel	Nitro	57.739s (-86.3% 🟢)	59.801s (-85.9% 🟢)	2.063s	2	1.06x

🔍 Observability: Express | Nitro

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.252s (-1.7%)	2.008s (~)	0.755s	15	1.00x
🐘 Postgres	Express	1.267s (~)	2.009s (~)	0.743s	15	1.01x
💻 Local	Express	1.511s (+1.5%)	2.005s (~)	0.494s	15	1.21x
💻 Local	Nitro	1.530s (-6.2% 🟢)	2.006s (-3.3%)	0.476s	15	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.831s (-1.0%)	4.302s (-7.0% 🟢)	1.470s	7	1.00x
▲ Vercel	Nitro	3.266s (+15.9% 🔺)	4.773s (+10.4% 🔺)	1.507s	7	1.15x

🔍 Observability: Express | Nitro

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.331s (-1.3%)	3.009s (~)	0.678s	10	1.00x
🐘 Postgres	Nitro	2.356s (~)	3.010s (~)	0.654s	10	1.01x
💻 Local	Nitro	3.070s (-2.4%)	3.885s (~)	0.815s	8	1.32x
💻 Local	Express	3.072s (+4.0%)	3.889s (+12.6% 🔺)	0.817s	8	1.32x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.526s (-30.2% 🟢)	4.140s (-19.0% 🟢)	1.614s	8	1.00x
▲ Vercel	Nitro	3.790s (-6.5% 🟢)	5.260s (-11.2% 🟢)	1.470s	6	1.50x

🔍 Observability: Express | Nitro

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	3.473s (~)	4.008s (~)	0.535s	8	1.00x
🐘 Postgres	Express	3.520s (+1.0%)	4.012s (~)	0.492s	8	1.01x
💻 Local	Express	8.370s (~)	9.022s (~)	0.652s	4	2.41x
💻 Local	Nitro	8.495s (+1.7%)	9.026s (~)	0.531s	4	2.45x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.833s (-19.6% 🟢)	4.761s (-14.0% 🟢)	1.928s	7	1.00x
▲ Vercel	Express	3.479s (-18.0% 🟢)	5.061s (-17.4% 🟢)	1.583s	6	1.23x

🔍 Observability: Nitro | Express

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.258s (~)	2.010s (~)	0.751s	15	1.00x
🐘 Postgres	Express	1.281s (+1.9%)	2.008s (~)	0.727s	15	1.02x
💻 Local	Express	1.548s (-18.3% 🟢)	2.007s (-15.1% 🟢)	0.459s	15	1.23x
💻 Local	Nitro	1.569s (-15.9% 🟢)	2.007s (-14.3% 🟢)	0.437s	15	1.25x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.983s (-23.2% 🟢)	3.597s (-17.3% 🟢)	1.614s	9	1.00x
▲ Vercel	Nitro	2.025s (-17.7% 🟢)	3.788s (-9.2% 🟢)	1.763s	8	1.02x

🔍 Observability: Express | Nitro

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.327s (-0.5%)	3.009s (~)	0.682s	10	1.00x
🐘 Postgres	Express	2.331s (~)	3.010s (~)	0.679s	10	1.00x
💻 Local	Nitro	3.050s (~)	3.885s (~)	0.835s	8	1.31x
💻 Local	Express	3.241s (+3.5%)	3.884s (+3.2%)	0.643s	8	1.39x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.370s (-26.7% 🟢)	4.172s (-17.8% 🟢)	1.801s	8	1.00x
▲ Vercel	Express	2.377s (-25.6% 🟢)	3.815s (-20.4% 🟢)	1.439s	8	1.00x

🔍 Observability: Nitro | Express

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.466s (-0.9%)	4.011s (~)	0.545s	8	1.00x
🐘 Postgres	Nitro	3.470s (~)	4.011s (~)	0.541s	8	1.00x
💻 Local	Nitro	9.426s (+3.1%)	9.772s (-2.5%)	0.346s	4	2.72x
💻 Local	Express	9.546s (+8.5% 🔺)	10.021s (+8.1% 🔺)	0.475s	3	2.75x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.719s (-57.6% 🟢)	4.485s (-45.2% 🟢)	1.766s	7	1.00x
▲ Vercel	Nitro	2.729s (-46.4% 🟢)	4.372s (-35.9% 🟢)	1.643s	7	1.00x

🔍 Observability: Express | Nitro

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.828s (+0.9%)	1.006s (~)	0.179s	60	1.00x
🐘 Postgres	Express	0.828s (-1.3%)	1.006s (-1.7%)	0.178s	60	1.00x
💻 Local	Nitro	1.015s (+3.5%)	1.700s (+55.4% 🔺)	0.685s	36	1.23x
💻 Local	Express	1.139s (+15.7% 🔺)	1.584s (+47.3% 🔺)	0.446s	38	1.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	9.922s (-55.0% 🟢)	11.725s (-51.2% 🟢)	1.803s	6	1.00x
▲ Vercel	Express	10.164s (-46.6% 🟢)	11.834s (-44.5% 🟢)	1.671s	6	1.02x

🔍 Observability: Nitro | Express

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.966s (-0.5%)	2.227s (-1.4%)	0.261s	41	1.00x
🐘 Postgres	Nitro	1.999s (+3.7%)	2.494s (+18.7% 🔺)	0.495s	37	1.02x
💻 Local	Nitro	3.118s (+2.7%)	4.010s (+6.7% 🔺)	0.892s	23	1.59x
💻 Local	Express	3.120s (+3.4%)	3.966s (+10.6% 🔺)	0.846s	23	1.59x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	28.179s (-28.6% 🟢)	30.159s (-27.0% 🟢)	1.980s	3	1.00x
▲ Vercel	Express	29.648s (-14.1% 🟢)	31.610s (-14.1% 🟢)	1.962s	3	1.05x

🔍 Observability: Nitro | Express

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	4.042s (-1.5%)	4.566s (-0.8%)	0.524s	27	1.00x
🐘 Postgres	Express	4.045s (+1.4%)	4.703s (+7.6% 🔺)	0.658s	26	1.00x
💻 Local	Express	9.340s (+1.4%)	10.019s (~)	0.678s	12	2.31x
💻 Local	Nitro	9.427s (+1.4%)	10.019s (~)	0.592s	12	2.33x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	85.866s (-34.0% 🟢)	88.100s (-33.3% 🟢)	2.234s	2	1.00x
▲ Vercel	Nitro	86.845s (-10.4% 🟢)	88.977s (-9.6% 🟢)	2.132s	2	1.01x

🔍 Observability: Express | Nitro

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.275s (-3.0%)	1.007s (~)	0.732s	60	1.00x
🐘 Postgres	Express	0.283s (~)	1.007s (~)	0.724s	60	1.03x
💻 Local	Express	0.611s (+9.0% 🔺)	1.005s (~)	0.394s	60	2.22x
💻 Local	Nitro	0.643s (+6.4% 🔺)	1.005s (-1.6%)	0.362s	60	2.34x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.416s (-14.8% 🟢)	3.025s (-9.7% 🟢)	1.610s	20	1.00x
▲ Vercel	Express	1.589s (-18.7% 🟢)	3.252s (-10.6% 🟢)	1.664s	19	1.12x

🔍 Observability: Nitro | Express

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.484s (-2.6%)	1.007s (~)	0.523s	90	1.00x
🐘 Postgres	Express	0.491s (-3.8%)	1.006s (~)	0.516s	90	1.01x
💻 Local	Express	2.545s (+1.3%)	3.009s (~)	0.464s	30	5.26x
💻 Local	Nitro	2.600s (+2.4%)	3.009s (~)	0.409s	30	5.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.744s (-14.9% 🟢)	4.352s (-9.7% 🟢)	1.608s	21	1.00x
▲ Vercel	Express	3.035s (~)	4.735s (-1.5%)	1.700s	20	1.11x

🔍 Observability: Nitro | Express

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.790s (~)	1.007s (~)	0.217s	120	1.00x
🐘 Postgres	Express	0.814s (-0.6%)	1.009s (-0.8%)	0.196s	119	1.03x
💻 Local	Express	11.272s (+0.7%)	11.937s (~)	0.665s	11	14.26x
💻 Local	Nitro	11.480s (+2.6%)	12.028s (+3.1%)	0.548s	10	14.52x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	6.569s (-11.5% 🟢)	8.049s (-12.9% 🟢)	1.481s	15	1.00x
▲ Vercel	Nitro	6.888s (-10.8% 🟢)	8.727s (-7.2% 🟢)	1.839s	14	1.05x

🔍 Observability: Express | Nitro

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.204s (-0.7%)	1.002s (~)	0.001s (-6.7% 🟢)	1.010s (~)	0.806s	10	1.00x
💻 Local	Nitro	0.207s (-3.1%)	1.004s (~)	0.012s (-4.0%)	1.019s (~)	0.812s	10	1.02x
💻 Local	Express	0.209s (+5.0% 🔺)	1.004s (~)	0.012s (+0.8%)	1.019s (~)	0.809s	10	1.03x
🐘 Postgres	Express	0.211s (+3.0%)	0.993s (-0.6%)	0.002s (-6.3% 🟢)	1.009s (~)	0.798s	10	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.468s (-61.7% 🟢)	2.820s (-46.6% 🟢)	1.891s (+154.8% 🔺)	5.170s (-20.3% 🟢)	3.703s	10	1.00x
▲ Vercel	Express	1.540s (-38.5% 🟢)	3.100s (-24.2% 🟢)	1.519s (+58.1% 🔺)	5.100s (-8.8% 🟢)	3.560s	10	1.05x

🔍 Observability: Nitro | Express

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.606s (-2.8%)	1.004s (~)	0.004s (-3.7%)	1.022s (~)	0.415s	59	1.00x
🐘 Postgres	Express	0.635s (+0.8%)	1.005s (~)	0.004s (+6.6% 🔺)	1.023s (~)	0.388s	59	1.05x
💻 Local	Nitro	0.775s (-7.6% 🟢)	1.012s (~)	0.011s (+13.1% 🔺)	1.025s (-8.2% 🟢)	0.249s	59	1.28x
💻 Local	Express	0.861s (+13.7% 🔺)	1.014s (-1.5%)	0.010s (+4.7%)	1.118s (+7.5% 🔺)	0.257s	54	1.42x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	4.106s (-36.9% 🟢)	5.531s (-31.0% 🟢)	0.226s (-44.7% 🟢)	6.155s (-30.3% 🟢)	2.049s	10	1.00x
▲ Vercel	Nitro	4.401s (-85.1% 🟢)	6.039s (-80.4% 🟢)	0.233s (+108.0% 🔺)	6.716s (-78.9% 🟢)	2.315s	10	1.07x

🔍 Observability: Express | Nitro

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.922s (-4.8%)	1.104s (-11.5% 🟢)	0.000s (+77.8% 🔺)	1.132s (-10.0% 🟢)	0.210s	54	1.00x
🐘 Postgres	Express	0.973s (+1.3%)	1.328s (+3.9%)	0.000s (-100.0% 🟢)	1.358s (+3.9%)	0.385s	45	1.06x
💻 Local	Express	1.247s (+1.8%)	2.023s (~)	0.000s (+20.0% 🔺)	2.025s (~)	0.778s	30	1.35x
💻 Local	Nitro	1.266s (+3.6%)	2.023s (~)	0.000s (+100.0% 🔺)	2.025s (~)	0.758s	30	1.37x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.102s (-17.1% 🟢)	4.665s (-8.6% 🟢)	0.000s (-54.2% 🟢)	5.097s (-7.8% 🟢)	1.995s	12	1.00x
▲ Vercel	Nitro	3.496s (+14.6% 🔺)	5.240s (+19.3% 🔺)	0.000s (+18.2% 🔺)	5.691s (+18.3% 🔺)	2.194s	11	1.13x

🔍 Observability: Express | Nitro

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.726s (-3.6%)	2.067s (-3.5%)	0.000s (-100.0% 🟢)	2.094s (-3.7%)	0.367s	29	1.00x
🐘 Postgres	Express	1.769s (~)	2.100s (-3.6%)	0.000s (+Infinity% 🔺)	2.114s (-3.8%)	0.345s	29	1.02x
💻 Local	Express	2.971s (-14.3% 🟢)	3.422s (-15.2% 🟢)	0.000s (-65.3% 🟢)	3.424s (-15.2% 🟢)	0.453s	18	1.72x
💻 Local	Nitro	3.021s (-10.8% 🟢)	3.533s (-12.4% 🟢)	0.000s (-16.7% 🟢)	3.536s (-12.4% 🟢)	0.515s	18	1.75x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.775s (+16.6% 🔺)	6.453s (+20.1% 🔺)	0.000s (-100.0% 🟢)	6.877s (+18.7% 🔺)	2.102s	9	1.00x
▲ Vercel	Express	48.263s (+952.1% 🔺)	49.393s (+720.2% 🔺)	0.000s (+Infinity% 🔺)	49.959s (+673.7% 🔺)	1.696s	7	10.11x

🔍 Observability: Nitro | Express

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	12/21
🐘 Postgres	Nitro	14/21
▲ Vercel	Nitro	12/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	16/21
Nitro	🐘 Postgres	17/21

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

#1908) (#1909)

)

…ovements * origin/main: web: configure vercelPreset() for Vercel deployments (#1815) [core] Combine flow+step bundle and process steps eagerly (#1338) [world-vercel] Revert stream close control framing (#1891) [tarballs] Use turbo to build workspace deps before packing (#1908) # Conflicts: # tarballs/vercel.json

…ignal * origin/main: [core] Skip inline step execution when suspension also has a wait (#1924) [errors] Replace chalk import in @workfow/errors with inline ANSI shim (#1915) Fix compatibility with Zod 4.4.x (#1902) Serialize `run_failed`/`step_failed` errors through serialization pipeline (#1851) tarballs: redesign preview tarballs index page (#1911) Remove extra changeset (#1922) Add stable Next.js eager and lazy test coverage (#1747) Enforce per-(run, correlation) uniqueness for entity-creating events in world-postgres (#1878) fix(world-vercel): add default request timeout to workflow-server HTTP calls (#1807) Allow disabling step sourcemap with new `sourcemap` option in builders (#1842) [ci] Enable Vercel-prod e2e for tanstack-start (#1904) web: configure vercelPreset() for Vercel deployments (#1815) [core] Combine flow+step bundle and process steps eagerly (#1338) [world-vercel] Revert stream close control framing (#1891) [tarballs] Use turbo to build workspace deps before packing (#1908) # Conflicts: # packages/core/src/runtime/step-handler.test.ts # packages/core/src/runtime/step-handler.ts # packages/core/src/runtime/suspension-handler.ts # packages/core/src/step.test.ts # packages/world-local/src/storage/events-storage.ts # packages/world-postgres/src/drizzle/migrations/meta/_journal.json

VaguelySerious · 2026-05-04T05:13:00Z

Summary

The tarballs Vercel project's vercel.json sets

"buildCommand": "pnpm --filter tarballs build"

which only runs the tarballs package's build script (node scripts/pack.ts) and does not trigger turbo's dependsOn: ["^build"] chain. As a result every preview tarball gets packed with an empty dist/ directory — only bin/, package.json, README.md, and docs/ make it in. Downstream installs then fail with errors like:

Cannot find module '/.../node_modules/workflow/dist/next.cjs'

The old docs-based pipeline did not hit this because Vercel detected docs as a Next.js framework, ran turbo for it (which fans out via ^build), and pack.ts was wired as a prebuild step that ran after workspace deps were already built. Splitting tarballs out of docs in #1893 dropped that side-effect.

The fix is one line: switch the build command to

"buildCommand": "pnpm turbo build --filter=tarballs"

so turbo evaluates the build task for tarballs, fans out via ^build to compile every workspace dependency first, and only then runs tarballs#build (pack.ts) against the populated dist/ directories.

Test plan

pnpm turbo build --filter=tarballs locally — output tarballs contain the full dist/ tree (verified package/dist/next.cjs is present in tarballs/public/workflow.tgz).
Preview deployment for this branch produces tarballs that resolve workflow/next correctly when installed in a downstream Next.js app.
CI checks pass.

🤖 Generated with Claude Code

The standalone tarballs project's vercel.json sets "buildCommand": "pnpm --filter tarballs build", which only runs the tarballs package's build script (node scripts/pack.ts) and does not trigger turbo's `dependsOn: ["^build"]` chain. Every workspace package gets packed with an empty dist/ directory, so downstream installs fail with errors like "Cannot find module '<pkg>/dist/next.cjs'". The previous docs-based pipeline didn't hit this because Vercel detected docs as a Next.js framework, ran turbo for it, and pack.ts was wired as a prebuild step that ran after deps were already built. Switch the buildCommand to `pnpm turbo build --filter=tarballs` so turbo evaluates the build task for tarballs, fans out via ^build to compile every workspace dependency first, and only then runs tarballs#build (pack.ts) against the populated dist/ directories. Verified locally: a fresh build now produces tarballs containing the full dist/ tree (including dist/next.cjs). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

vercel · 2026-05-04T05:13:01Z

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

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	May 4, 2026 5:16am
example-nextjs-workflow-webpack	Ready	Preview, Comment	May 4, 2026 5:16am
example-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-astro-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-express-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-fastify-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-hono-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-nitro-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-nuxt-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-sveltekit-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-tanstack-start-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-vite-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workflow-docs	Ready	Preview, Comment, Open in v0	May 4, 2026 5:16am
workflow-swc-playground	Ready	Preview, Comment	May 4, 2026 5:16am
workflow-tarballs	Ready	Preview, Comment	May 4, 2026 5:16am
workflow-web	Ready	Preview, Comment	May 4, 2026 5:16am

changeset-bot · 2026-05-04T05:13:05Z

🦋 Changeset detected

Latest commit: 881c6f9

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

This PR includes changesets to release 0 packages

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

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 · 2026-05-04T05:13:11Z

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Skipped	Total
✅ ▲ Vercel Production	1011	67	1078
✅ 💻 Local Development	1090	86	1176
✅ 📦 Local Production	1090	86	1176
✅ 🐘 Local Postgres	1090	86	1176
✅ 🪟 Windows	98	0	98
✅ 📋 Other	552	36	588
Total	4931	361	5292

Details by Category

✅ ▲ Vercel Production

App	Passed	Skipped
✅ astro	91	7
✅ example	91	7
✅ express	91	7
✅ fastify	91	7
✅ hono	91	7
✅ nextjs-turbopack	96	2
✅ nextjs-webpack	96	2
✅ nitro	91	7
✅ nuxt	91	7
✅ sveltekit	91	7
✅ vite	91	7

✅ 💻 Local Development

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	98	0	0

✅ 📋 Other

App	Passed	Skipped
✅ e2e-local-dev-nest-stable	92	6
✅ e2e-local-dev-tanstack-start-stable	92	6
✅ e2e-local-postgres-nest-stable	92	6
✅ e2e-local-postgres-tanstack-start-stable	92	6
✅ e2e-local-prod-nest-stable	92	6
✅ e2e-local-prod-tanstack-start-stable	92	6

📋 View full workflow run

github-actions · 2026-05-04T05:13:16Z

📊 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	0.041s (-4.4%)	1.006s (~)	0.965s	10	1.00x
💻 Local	Express	0.045s (+1.6%)	1.005s (~)	0.960s	10	1.09x
🐘 Postgres	Nitro	0.058s (-38.8% 🟢)	1.010s (-3.2%)	0.952s	10	1.42x
🐘 Postgres	Express	0.063s (+9.3% 🔺)	1.009s (~)	0.946s	10	1.54x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	0.265s (-35.4% 🟢)	2.640s (+5.2% 🔺)	2.375s	10	1.00x
▲ Vercel	Express	0.292s (+24.0% 🔺)	2.562s (+20.0% 🔺)	2.270s	10	1.10x

🔍 Observability: Nitro | Express

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.129s (~)	2.006s (~)	0.877s	10	1.00x
💻 Local	Express	1.139s (+1.2%)	2.006s (~)	0.867s	10	1.01x
🐘 Postgres	Express	1.139s (-0.6%)	2.008s (~)	0.869s	10	1.01x
🐘 Postgres	Nitro	1.143s (~)	2.010s (~)	0.866s	10	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.923s (-50.6% 🟢)	3.880s (-34.3% 🟢)	1.957s	10	1.00x
▲ Vercel	Express	1.950s (+4.0%)	3.611s (-5.2% 🟢)	1.661s	10	1.01x

🔍 Observability: Nitro | Express

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	10.902s (-0.6%)	11.022s (~)	0.120s	3	1.00x
🐘 Postgres	Nitro	10.924s (~)	11.023s (~)	0.099s	3	1.00x
💻 Local	Nitro	10.938s (~)	11.024s (~)	0.086s	3	1.00x
💻 Local	Express	10.971s (~)	11.358s (+3.0%)	0.388s	3	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	17.794s (-25.0% 🟢)	19.925s (-20.7% 🟢)	2.132s	2	1.00x
▲ Vercel	Express	20.665s (+21.7% 🔺)	22.483s (+12.3% 🔺)	1.818s	2	1.16x

🔍 Observability: Nitro | Express

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	14.543s (~)	15.023s (~)	0.480s	4	1.00x
🐘 Postgres	Nitro	14.614s (~)	15.022s (~)	0.409s	4	1.00x
💻 Local	Nitro	15.052s (~)	15.780s (-1.6%)	0.728s	4	1.04x
💻 Local	Express	15.053s (+0.5%)	15.781s (+5.0%)	0.728s	4	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	34.782s (-46.0% 🟢)	36.761s (-44.8% 🟢)	1.980s	2	1.00x
▲ Vercel	Express	37.878s (-24.7% 🟢)	40.056s (-23.8% 🟢)	2.178s	2	1.09x

🔍 Observability: Nitro | Express

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	13.905s (-0.7%)	14.165s (-2.9%)	0.260s	7	1.00x
🐘 Postgres	Nitro	14.197s (+1.6%)	15.024s (+5.0%)	0.828s	6	1.02x
💻 Local	Nitro	16.877s (+0.6%)	17.198s (+1.0%)	0.321s	6	1.21x
💻 Local	Express	16.948s (+2.1%)	17.030s (~)	0.082s	6	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	54.672s (-54.9% 🟢)	56.262s (-54.5% 🟢)	1.590s	2	1.00x
▲ Vercel	Nitro	57.739s (-86.3% 🟢)	59.801s (-85.9% 🟢)	2.063s	2	1.06x

🔍 Observability: Express | Nitro

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.252s (-1.7%)	2.008s (~)	0.755s	15	1.00x
🐘 Postgres	Express	1.267s (~)	2.009s (~)	0.743s	15	1.01x
💻 Local	Express	1.511s (+1.5%)	2.005s (~)	0.494s	15	1.21x
💻 Local	Nitro	1.530s (-6.2% 🟢)	2.006s (-3.3%)	0.476s	15	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.831s (-1.0%)	4.302s (-7.0% 🟢)	1.470s	7	1.00x
▲ Vercel	Nitro	3.266s (+15.9% 🔺)	4.773s (+10.4% 🔺)	1.507s	7	1.15x

🔍 Observability: Express | Nitro

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.331s (-1.3%)	3.009s (~)	0.678s	10	1.00x
🐘 Postgres	Nitro	2.356s (~)	3.010s (~)	0.654s	10	1.01x
💻 Local	Nitro	3.070s (-2.4%)	3.885s (~)	0.815s	8	1.32x
💻 Local	Express	3.072s (+4.0%)	3.889s (+12.6% 🔺)	0.817s	8	1.32x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.526s (-30.2% 🟢)	4.140s (-19.0% 🟢)	1.614s	8	1.00x
▲ Vercel	Nitro	3.790s (-6.5% 🟢)	5.260s (-11.2% 🟢)	1.470s	6	1.50x

🔍 Observability: Express | Nitro

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	3.473s (~)	4.008s (~)	0.535s	8	1.00x
🐘 Postgres	Express	3.520s (+1.0%)	4.012s (~)	0.492s	8	1.01x
💻 Local	Express	8.370s (~)	9.022s (~)	0.652s	4	2.41x
💻 Local	Nitro	8.495s (+1.7%)	9.026s (~)	0.531s	4	2.45x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.833s (-19.6% 🟢)	4.761s (-14.0% 🟢)	1.928s	7	1.00x
▲ Vercel	Express	3.479s (-18.0% 🟢)	5.061s (-17.4% 🟢)	1.583s	6	1.23x

🔍 Observability: Nitro | Express

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.258s (~)	2.010s (~)	0.751s	15	1.00x
🐘 Postgres	Express	1.281s (+1.9%)	2.008s (~)	0.727s	15	1.02x
💻 Local	Express	1.548s (-18.3% 🟢)	2.007s (-15.1% 🟢)	0.459s	15	1.23x
💻 Local	Nitro	1.569s (-15.9% 🟢)	2.007s (-14.3% 🟢)	0.437s	15	1.25x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.983s (-23.2% 🟢)	3.597s (-17.3% 🟢)	1.614s	9	1.00x
▲ Vercel	Nitro	2.025s (-17.7% 🟢)	3.788s (-9.2% 🟢)	1.763s	8	1.02x

🔍 Observability: Express | Nitro

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.327s (-0.5%)	3.009s (~)	0.682s	10	1.00x
🐘 Postgres	Express	2.331s (~)	3.010s (~)	0.679s	10	1.00x
💻 Local	Nitro	3.050s (~)	3.885s (~)	0.835s	8	1.31x
💻 Local	Express	3.241s (+3.5%)	3.884s (+3.2%)	0.643s	8	1.39x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.370s (-26.7% 🟢)	4.172s (-17.8% 🟢)	1.801s	8	1.00x
▲ Vercel	Express	2.377s (-25.6% 🟢)	3.815s (-20.4% 🟢)	1.439s	8	1.00x

🔍 Observability: Nitro | Express

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.466s (-0.9%)	4.011s (~)	0.545s	8	1.00x
🐘 Postgres	Nitro	3.470s (~)	4.011s (~)	0.541s	8	1.00x
💻 Local	Nitro	9.426s (+3.1%)	9.772s (-2.5%)	0.346s	4	2.72x
💻 Local	Express	9.546s (+8.5% 🔺)	10.021s (+8.1% 🔺)	0.475s	3	2.75x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.719s (-57.6% 🟢)	4.485s (-45.2% 🟢)	1.766s	7	1.00x
▲ Vercel	Nitro	2.729s (-46.4% 🟢)	4.372s (-35.9% 🟢)	1.643s	7	1.00x

🔍 Observability: Express | Nitro

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.828s (+0.9%)	1.006s (~)	0.179s	60	1.00x
🐘 Postgres	Express	0.828s (-1.3%)	1.006s (-1.7%)	0.178s	60	1.00x
💻 Local	Nitro	1.015s (+3.5%)	1.700s (+55.4% 🔺)	0.685s	36	1.23x
💻 Local	Express	1.139s (+15.7% 🔺)	1.584s (+47.3% 🔺)	0.446s	38	1.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	9.922s (-55.0% 🟢)	11.725s (-51.2% 🟢)	1.803s	6	1.00x
▲ Vercel	Express	10.164s (-46.6% 🟢)	11.834s (-44.5% 🟢)	1.671s	6	1.02x

🔍 Observability: Nitro | Express

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.966s (-0.5%)	2.227s (-1.4%)	0.261s	41	1.00x
🐘 Postgres	Nitro	1.999s (+3.7%)	2.494s (+18.7% 🔺)	0.495s	37	1.02x
💻 Local	Nitro	3.118s (+2.7%)	4.010s (+6.7% 🔺)	0.892s	23	1.59x
💻 Local	Express	3.120s (+3.4%)	3.966s (+10.6% 🔺)	0.846s	23	1.59x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	28.179s (-28.6% 🟢)	30.159s (-27.0% 🟢)	1.980s	3	1.00x
▲ Vercel	Express	29.648s (-14.1% 🟢)	31.610s (-14.1% 🟢)	1.962s	3	1.05x

🔍 Observability: Nitro | Express

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	4.042s (-1.5%)	4.566s (-0.8%)	0.524s	27	1.00x
🐘 Postgres	Express	4.045s (+1.4%)	4.703s (+7.6% 🔺)	0.658s	26	1.00x
💻 Local	Express	9.340s (+1.4%)	10.019s (~)	0.678s	12	2.31x
💻 Local	Nitro	9.427s (+1.4%)	10.019s (~)	0.592s	12	2.33x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	85.866s (-34.0% 🟢)	88.100s (-33.3% 🟢)	2.234s	2	1.00x
▲ Vercel	Nitro	86.845s (-10.4% 🟢)	88.977s (-9.6% 🟢)	2.132s	2	1.01x

🔍 Observability: Express | Nitro

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.275s (-3.0%)	1.007s (~)	0.732s	60	1.00x
🐘 Postgres	Express	0.283s (~)	1.007s (~)	0.724s	60	1.03x
💻 Local	Express	0.611s (+9.0% 🔺)	1.005s (~)	0.394s	60	2.22x
💻 Local	Nitro	0.643s (+6.4% 🔺)	1.005s (-1.6%)	0.362s	60	2.34x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.416s (-14.8% 🟢)	3.025s (-9.7% 🟢)	1.610s	20	1.00x
▲ Vercel	Express	1.589s (-18.7% 🟢)	3.252s (-10.6% 🟢)	1.664s	19	1.12x

🔍 Observability: Nitro | Express

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.484s (-2.6%)	1.007s (~)	0.523s	90	1.00x
🐘 Postgres	Express	0.491s (-3.8%)	1.006s (~)	0.516s	90	1.01x
💻 Local	Express	2.545s (+1.3%)	3.009s (~)	0.464s	30	5.26x
💻 Local	Nitro	2.600s (+2.4%)	3.009s (~)	0.409s	30	5.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.744s (-14.9% 🟢)	4.352s (-9.7% 🟢)	1.608s	21	1.00x
▲ Vercel	Express	3.035s (~)	4.735s (-1.5%)	1.700s	20	1.11x

🔍 Observability: Nitro | Express

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.790s (~)	1.007s (~)	0.217s	120	1.00x
🐘 Postgres	Express	0.814s (-0.6%)	1.009s (-0.8%)	0.196s	119	1.03x
💻 Local	Express	11.272s (+0.7%)	11.937s (~)	0.665s	11	14.26x
💻 Local	Nitro	11.480s (+2.6%)	12.028s (+3.1%)	0.548s	10	14.52x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	6.569s (-11.5% 🟢)	8.049s (-12.9% 🟢)	1.481s	15	1.00x
▲ Vercel	Nitro	6.888s (-10.8% 🟢)	8.727s (-7.2% 🟢)	1.839s	14	1.05x

🔍 Observability: Express | Nitro

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.204s (-0.7%)	1.002s (~)	0.001s (-6.7% 🟢)	1.010s (~)	0.806s	10	1.00x
💻 Local	Nitro	0.207s (-3.1%)	1.004s (~)	0.012s (-4.0%)	1.019s (~)	0.812s	10	1.02x
💻 Local	Express	0.209s (+5.0% 🔺)	1.004s (~)	0.012s (+0.8%)	1.019s (~)	0.809s	10	1.03x
🐘 Postgres	Express	0.211s (+3.0%)	0.993s (-0.6%)	0.002s (-6.3% 🟢)	1.009s (~)	0.798s	10	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.468s (-61.7% 🟢)	2.820s (-46.6% 🟢)	1.891s (+154.8% 🔺)	5.170s (-20.3% 🟢)	3.703s	10	1.00x
▲ Vercel	Express	1.540s (-38.5% 🟢)	3.100s (-24.2% 🟢)	1.519s (+58.1% 🔺)	5.100s (-8.8% 🟢)	3.560s	10	1.05x

🔍 Observability: Nitro | Express

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.606s (-2.8%)	1.004s (~)	0.004s (-3.7%)	1.022s (~)	0.415s	59	1.00x
🐘 Postgres	Express	0.635s (+0.8%)	1.005s (~)	0.004s (+6.6% 🔺)	1.023s (~)	0.388s	59	1.05x
💻 Local	Nitro	0.775s (-7.6% 🟢)	1.012s (~)	0.011s (+13.1% 🔺)	1.025s (-8.2% 🟢)	0.249s	59	1.28x
💻 Local	Express	0.861s (+13.7% 🔺)	1.014s (-1.5%)	0.010s (+4.7%)	1.118s (+7.5% 🔺)	0.257s	54	1.42x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	4.106s (-36.9% 🟢)	5.531s (-31.0% 🟢)	0.226s (-44.7% 🟢)	6.155s (-30.3% 🟢)	2.049s	10	1.00x
▲ Vercel	Nitro	4.401s (-85.1% 🟢)	6.039s (-80.4% 🟢)	0.233s (+108.0% 🔺)	6.716s (-78.9% 🟢)	2.315s	10	1.07x

🔍 Observability: Express | Nitro

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.922s (-4.8%)	1.104s (-11.5% 🟢)	0.000s (+77.8% 🔺)	1.132s (-10.0% 🟢)	0.210s	54	1.00x
🐘 Postgres	Express	0.973s (+1.3%)	1.328s (+3.9%)	0.000s (-100.0% 🟢)	1.358s (+3.9%)	0.385s	45	1.06x
💻 Local	Express	1.247s (+1.8%)	2.023s (~)	0.000s (+20.0% 🔺)	2.025s (~)	0.778s	30	1.35x
💻 Local	Nitro	1.266s (+3.6%)	2.023s (~)	0.000s (+100.0% 🔺)	2.025s (~)	0.758s	30	1.37x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.102s (-17.1% 🟢)	4.665s (-8.6% 🟢)	0.000s (-54.2% 🟢)	5.097s (-7.8% 🟢)	1.995s	12	1.00x
▲ Vercel	Nitro	3.496s (+14.6% 🔺)	5.240s (+19.3% 🔺)	0.000s (+18.2% 🔺)	5.691s (+18.3% 🔺)	2.194s	11	1.13x

🔍 Observability: Express | Nitro

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.726s (-3.6%)	2.067s (-3.5%)	0.000s (-100.0% 🟢)	2.094s (-3.7%)	0.367s	29	1.00x
🐘 Postgres	Express	1.769s (~)	2.100s (-3.6%)	0.000s (+Infinity% 🔺)	2.114s (-3.8%)	0.345s	29	1.02x
💻 Local	Express	2.971s (-14.3% 🟢)	3.422s (-15.2% 🟢)	0.000s (-65.3% 🟢)	3.424s (-15.2% 🟢)	0.453s	18	1.72x
💻 Local	Nitro	3.021s (-10.8% 🟢)	3.533s (-12.4% 🟢)	0.000s (-16.7% 🟢)	3.536s (-12.4% 🟢)	0.515s	18	1.75x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.775s (+16.6% 🔺)	6.453s (+20.1% 🔺)	0.000s (-100.0% 🟢)	6.877s (+18.7% 🔺)	2.102s	9	1.00x
▲ Vercel	Express	48.263s (+952.1% 🔺)	49.393s (+720.2% 🔺)	0.000s (+Infinity% 🔺)	49.959s (+673.7% 🔺)	1.696s	7	10.11x

🔍 Observability: Nitro | Express

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	12/21
🐘 Postgres	Nitro	14/21
▲ Vercel	Nitro	12/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	16/21
Nitro	🐘 Postgres	17/21

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

#1908) (#1909)

)

…ovements * origin/main: web: configure vercelPreset() for Vercel deployments (#1815) [core] Combine flow+step bundle and process steps eagerly (#1338) [world-vercel] Revert stream close control framing (#1891) [tarballs] Use turbo to build workspace deps before packing (#1908) # Conflicts: # tarballs/vercel.json

…ignal * origin/main: [core] Skip inline step execution when suspension also has a wait (#1924) [errors] Replace chalk import in @workfow/errors with inline ANSI shim (#1915) Fix compatibility with Zod 4.4.x (#1902) Serialize `run_failed`/`step_failed` errors through serialization pipeline (#1851) tarballs: redesign preview tarballs index page (#1911) Remove extra changeset (#1922) Add stable Next.js eager and lazy test coverage (#1747) Enforce per-(run, correlation) uniqueness for entity-creating events in world-postgres (#1878) fix(world-vercel): add default request timeout to workflow-server HTTP calls (#1807) Allow disabling step sourcemap with new `sourcemap` option in builders (#1842) [ci] Enable Vercel-prod e2e for tanstack-start (#1904) web: configure vercelPreset() for Vercel deployments (#1815) [core] Combine flow+step bundle and process steps eagerly (#1338) [world-vercel] Revert stream close control framing (#1891) [tarballs] Use turbo to build workspace deps before packing (#1908) # Conflicts: # packages/core/src/runtime/step-handler.test.ts # packages/core/src/runtime/step-handler.ts # packages/core/src/runtime/suspension-handler.ts # packages/core/src/step.test.ts # packages/world-local/src/storage/events-storage.ts # packages/world-postgres/src/drizzle/migrations/meta/_journal.json

VaguelySerious · 2026-05-04T05:13:00Z

Summary

The tarballs Vercel project's vercel.json sets

"buildCommand": "pnpm --filter tarballs build"

which only runs the tarballs package's build script (node scripts/pack.ts) and does not trigger turbo's dependsOn: ["^build"] chain. As a result every preview tarball gets packed with an empty dist/ directory — only bin/, package.json, README.md, and docs/ make it in. Downstream installs then fail with errors like:

Cannot find module '/.../node_modules/workflow/dist/next.cjs'

The old docs-based pipeline did not hit this because Vercel detected docs as a Next.js framework, ran turbo for it (which fans out via ^build), and pack.ts was wired as a prebuild step that ran after workspace deps were already built. Splitting tarballs out of docs in #1893 dropped that side-effect.

The fix is one line: switch the build command to

"buildCommand": "pnpm turbo build --filter=tarballs"

so turbo evaluates the build task for tarballs, fans out via ^build to compile every workspace dependency first, and only then runs tarballs#build (pack.ts) against the populated dist/ directories.

Test plan

pnpm turbo build --filter=tarballs locally — output tarballs contain the full dist/ tree (verified package/dist/next.cjs is present in tarballs/public/workflow.tgz).
Preview deployment for this branch produces tarballs that resolve workflow/next correctly when installed in a downstream Next.js app.
CI checks pass.

🤖 Generated with Claude Code

The standalone tarballs project's vercel.json sets "buildCommand": "pnpm --filter tarballs build", which only runs the tarballs package's build script (node scripts/pack.ts) and does not trigger turbo's `dependsOn: ["^build"]` chain. Every workspace package gets packed with an empty dist/ directory, so downstream installs fail with errors like "Cannot find module '<pkg>/dist/next.cjs'". The previous docs-based pipeline didn't hit this because Vercel detected docs as a Next.js framework, ran turbo for it, and pack.ts was wired as a prebuild step that ran after deps were already built. Switch the buildCommand to `pnpm turbo build --filter=tarballs` so turbo evaluates the build task for tarballs, fans out via ^build to compile every workspace dependency first, and only then runs tarballs#build (pack.ts) against the populated dist/ directories. Verified locally: a fresh build now produces tarballs containing the full dist/ tree (including dist/next.cjs). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

vercel · 2026-05-04T05:13:01Z

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

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	May 4, 2026 5:16am
example-nextjs-workflow-webpack	Ready	Preview, Comment	May 4, 2026 5:16am
example-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-astro-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-express-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-fastify-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-hono-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-nitro-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-nuxt-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-sveltekit-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-tanstack-start-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-vite-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workflow-docs	Ready	Preview, Comment, Open in v0	May 4, 2026 5:16am
workflow-swc-playground	Ready	Preview, Comment	May 4, 2026 5:16am
workflow-tarballs	Ready	Preview, Comment	May 4, 2026 5:16am
workflow-web	Ready	Preview, Comment	May 4, 2026 5:16am

changeset-bot · 2026-05-04T05:13:05Z

🦋 Changeset detected

Latest commit: 881c6f9

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

This PR includes changesets to release 0 packages

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

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 · 2026-05-04T05:13:11Z

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Skipped	Total
✅ ▲ Vercel Production	1011	67	1078
✅ 💻 Local Development	1090	86	1176
✅ 📦 Local Production	1090	86	1176
✅ 🐘 Local Postgres	1090	86	1176
✅ 🪟 Windows	98	0	98
✅ 📋 Other	552	36	588
Total	4931	361	5292

Details by Category

✅ ▲ Vercel Production

App	Passed	Skipped
✅ astro	91	7
✅ example	91	7
✅ express	91	7
✅ fastify	91	7
✅ hono	91	7
✅ nextjs-turbopack	96	2
✅ nextjs-webpack	96	2
✅ nitro	91	7
✅ nuxt	91	7
✅ sveltekit	91	7
✅ vite	91	7

✅ 💻 Local Development

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	98	0	0

✅ 📋 Other

App	Passed	Skipped
✅ e2e-local-dev-nest-stable	92	6
✅ e2e-local-dev-tanstack-start-stable	92	6
✅ e2e-local-postgres-nest-stable	92	6
✅ e2e-local-postgres-tanstack-start-stable	92	6
✅ e2e-local-prod-nest-stable	92	6
✅ e2e-local-prod-tanstack-start-stable	92	6

📋 View full workflow run

github-actions · 2026-05-04T05:13:16Z

📊 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	0.041s (-4.4%)	1.006s (~)	0.965s	10	1.00x
💻 Local	Express	0.045s (+1.6%)	1.005s (~)	0.960s	10	1.09x
🐘 Postgres	Nitro	0.058s (-38.8% 🟢)	1.010s (-3.2%)	0.952s	10	1.42x
🐘 Postgres	Express	0.063s (+9.3% 🔺)	1.009s (~)	0.946s	10	1.54x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	0.265s (-35.4% 🟢)	2.640s (+5.2% 🔺)	2.375s	10	1.00x
▲ Vercel	Express	0.292s (+24.0% 🔺)	2.562s (+20.0% 🔺)	2.270s	10	1.10x

🔍 Observability: Nitro | Express

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.129s (~)	2.006s (~)	0.877s	10	1.00x
💻 Local	Express	1.139s (+1.2%)	2.006s (~)	0.867s	10	1.01x
🐘 Postgres	Express	1.139s (-0.6%)	2.008s (~)	0.869s	10	1.01x
🐘 Postgres	Nitro	1.143s (~)	2.010s (~)	0.866s	10	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.923s (-50.6% 🟢)	3.880s (-34.3% 🟢)	1.957s	10	1.00x
▲ Vercel	Express	1.950s (+4.0%)	3.611s (-5.2% 🟢)	1.661s	10	1.01x

🔍 Observability: Nitro | Express

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	10.902s (-0.6%)	11.022s (~)	0.120s	3	1.00x
🐘 Postgres	Nitro	10.924s (~)	11.023s (~)	0.099s	3	1.00x
💻 Local	Nitro	10.938s (~)	11.024s (~)	0.086s	3	1.00x
💻 Local	Express	10.971s (~)	11.358s (+3.0%)	0.388s	3	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	17.794s (-25.0% 🟢)	19.925s (-20.7% 🟢)	2.132s	2	1.00x
▲ Vercel	Express	20.665s (+21.7% 🔺)	22.483s (+12.3% 🔺)	1.818s	2	1.16x

🔍 Observability: Nitro | Express

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	14.543s (~)	15.023s (~)	0.480s	4	1.00x
🐘 Postgres	Nitro	14.614s (~)	15.022s (~)	0.409s	4	1.00x
💻 Local	Nitro	15.052s (~)	15.780s (-1.6%)	0.728s	4	1.04x
💻 Local	Express	15.053s (+0.5%)	15.781s (+5.0%)	0.728s	4	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	34.782s (-46.0% 🟢)	36.761s (-44.8% 🟢)	1.980s	2	1.00x
▲ Vercel	Express	37.878s (-24.7% 🟢)	40.056s (-23.8% 🟢)	2.178s	2	1.09x

🔍 Observability: Nitro | Express

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	13.905s (-0.7%)	14.165s (-2.9%)	0.260s	7	1.00x
🐘 Postgres	Nitro	14.197s (+1.6%)	15.024s (+5.0%)	0.828s	6	1.02x
💻 Local	Nitro	16.877s (+0.6%)	17.198s (+1.0%)	0.321s	6	1.21x
💻 Local	Express	16.948s (+2.1%)	17.030s (~)	0.082s	6	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	54.672s (-54.9% 🟢)	56.262s (-54.5% 🟢)	1.590s	2	1.00x
▲ Vercel	Nitro	57.739s (-86.3% 🟢)	59.801s (-85.9% 🟢)	2.063s	2	1.06x

🔍 Observability: Express | Nitro

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.252s (-1.7%)	2.008s (~)	0.755s	15	1.00x
🐘 Postgres	Express	1.267s (~)	2.009s (~)	0.743s	15	1.01x
💻 Local	Express	1.511s (+1.5%)	2.005s (~)	0.494s	15	1.21x
💻 Local	Nitro	1.530s (-6.2% 🟢)	2.006s (-3.3%)	0.476s	15	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.831s (-1.0%)	4.302s (-7.0% 🟢)	1.470s	7	1.00x
▲ Vercel	Nitro	3.266s (+15.9% 🔺)	4.773s (+10.4% 🔺)	1.507s	7	1.15x

🔍 Observability: Express | Nitro

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.331s (-1.3%)	3.009s (~)	0.678s	10	1.00x
🐘 Postgres	Nitro	2.356s (~)	3.010s (~)	0.654s	10	1.01x
💻 Local	Nitro	3.070s (-2.4%)	3.885s (~)	0.815s	8	1.32x
💻 Local	Express	3.072s (+4.0%)	3.889s (+12.6% 🔺)	0.817s	8	1.32x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.526s (-30.2% 🟢)	4.140s (-19.0% 🟢)	1.614s	8	1.00x
▲ Vercel	Nitro	3.790s (-6.5% 🟢)	5.260s (-11.2% 🟢)	1.470s	6	1.50x

🔍 Observability: Express | Nitro

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	3.473s (~)	4.008s (~)	0.535s	8	1.00x
🐘 Postgres	Express	3.520s (+1.0%)	4.012s (~)	0.492s	8	1.01x
💻 Local	Express	8.370s (~)	9.022s (~)	0.652s	4	2.41x
💻 Local	Nitro	8.495s (+1.7%)	9.026s (~)	0.531s	4	2.45x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.833s (-19.6% 🟢)	4.761s (-14.0% 🟢)	1.928s	7	1.00x
▲ Vercel	Express	3.479s (-18.0% 🟢)	5.061s (-17.4% 🟢)	1.583s	6	1.23x

🔍 Observability: Nitro | Express

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.258s (~)	2.010s (~)	0.751s	15	1.00x
🐘 Postgres	Express	1.281s (+1.9%)	2.008s (~)	0.727s	15	1.02x
💻 Local	Express	1.548s (-18.3% 🟢)	2.007s (-15.1% 🟢)	0.459s	15	1.23x
💻 Local	Nitro	1.569s (-15.9% 🟢)	2.007s (-14.3% 🟢)	0.437s	15	1.25x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.983s (-23.2% 🟢)	3.597s (-17.3% 🟢)	1.614s	9	1.00x
▲ Vercel	Nitro	2.025s (-17.7% 🟢)	3.788s (-9.2% 🟢)	1.763s	8	1.02x

🔍 Observability: Express | Nitro

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.327s (-0.5%)	3.009s (~)	0.682s	10	1.00x
🐘 Postgres	Express	2.331s (~)	3.010s (~)	0.679s	10	1.00x
💻 Local	Nitro	3.050s (~)	3.885s (~)	0.835s	8	1.31x
💻 Local	Express	3.241s (+3.5%)	3.884s (+3.2%)	0.643s	8	1.39x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.370s (-26.7% 🟢)	4.172s (-17.8% 🟢)	1.801s	8	1.00x
▲ Vercel	Express	2.377s (-25.6% 🟢)	3.815s (-20.4% 🟢)	1.439s	8	1.00x

🔍 Observability: Nitro | Express

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.466s (-0.9%)	4.011s (~)	0.545s	8	1.00x
🐘 Postgres	Nitro	3.470s (~)	4.011s (~)	0.541s	8	1.00x
💻 Local	Nitro	9.426s (+3.1%)	9.772s (-2.5%)	0.346s	4	2.72x
💻 Local	Express	9.546s (+8.5% 🔺)	10.021s (+8.1% 🔺)	0.475s	3	2.75x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.719s (-57.6% 🟢)	4.485s (-45.2% 🟢)	1.766s	7	1.00x
▲ Vercel	Nitro	2.729s (-46.4% 🟢)	4.372s (-35.9% 🟢)	1.643s	7	1.00x

🔍 Observability: Express | Nitro

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.828s (+0.9%)	1.006s (~)	0.179s	60	1.00x
🐘 Postgres	Express	0.828s (-1.3%)	1.006s (-1.7%)	0.178s	60	1.00x
💻 Local	Nitro	1.015s (+3.5%)	1.700s (+55.4% 🔺)	0.685s	36	1.23x
💻 Local	Express	1.139s (+15.7% 🔺)	1.584s (+47.3% 🔺)	0.446s	38	1.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	9.922s (-55.0% 🟢)	11.725s (-51.2% 🟢)	1.803s	6	1.00x
▲ Vercel	Express	10.164s (-46.6% 🟢)	11.834s (-44.5% 🟢)	1.671s	6	1.02x

🔍 Observability: Nitro | Express

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.966s (-0.5%)	2.227s (-1.4%)	0.261s	41	1.00x
🐘 Postgres	Nitro	1.999s (+3.7%)	2.494s (+18.7% 🔺)	0.495s	37	1.02x
💻 Local	Nitro	3.118s (+2.7%)	4.010s (+6.7% 🔺)	0.892s	23	1.59x
💻 Local	Express	3.120s (+3.4%)	3.966s (+10.6% 🔺)	0.846s	23	1.59x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	28.179s (-28.6% 🟢)	30.159s (-27.0% 🟢)	1.980s	3	1.00x
▲ Vercel	Express	29.648s (-14.1% 🟢)	31.610s (-14.1% 🟢)	1.962s	3	1.05x

🔍 Observability: Nitro | Express

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	4.042s (-1.5%)	4.566s (-0.8%)	0.524s	27	1.00x
🐘 Postgres	Express	4.045s (+1.4%)	4.703s (+7.6% 🔺)	0.658s	26	1.00x
💻 Local	Express	9.340s (+1.4%)	10.019s (~)	0.678s	12	2.31x
💻 Local	Nitro	9.427s (+1.4%)	10.019s (~)	0.592s	12	2.33x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	85.866s (-34.0% 🟢)	88.100s (-33.3% 🟢)	2.234s	2	1.00x
▲ Vercel	Nitro	86.845s (-10.4% 🟢)	88.977s (-9.6% 🟢)	2.132s	2	1.01x

🔍 Observability: Express | Nitro

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.275s (-3.0%)	1.007s (~)	0.732s	60	1.00x
🐘 Postgres	Express	0.283s (~)	1.007s (~)	0.724s	60	1.03x
💻 Local	Express	0.611s (+9.0% 🔺)	1.005s (~)	0.394s	60	2.22x
💻 Local	Nitro	0.643s (+6.4% 🔺)	1.005s (-1.6%)	0.362s	60	2.34x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.416s (-14.8% 🟢)	3.025s (-9.7% 🟢)	1.610s	20	1.00x
▲ Vercel	Express	1.589s (-18.7% 🟢)	3.252s (-10.6% 🟢)	1.664s	19	1.12x

🔍 Observability: Nitro | Express

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.484s (-2.6%)	1.007s (~)	0.523s	90	1.00x
🐘 Postgres	Express	0.491s (-3.8%)	1.006s (~)	0.516s	90	1.01x
💻 Local	Express	2.545s (+1.3%)	3.009s (~)	0.464s	30	5.26x
💻 Local	Nitro	2.600s (+2.4%)	3.009s (~)	0.409s	30	5.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.744s (-14.9% 🟢)	4.352s (-9.7% 🟢)	1.608s	21	1.00x
▲ Vercel	Express	3.035s (~)	4.735s (-1.5%)	1.700s	20	1.11x

🔍 Observability: Nitro | Express

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.790s (~)	1.007s (~)	0.217s	120	1.00x
🐘 Postgres	Express	0.814s (-0.6%)	1.009s (-0.8%)	0.196s	119	1.03x
💻 Local	Express	11.272s (+0.7%)	11.937s (~)	0.665s	11	14.26x
💻 Local	Nitro	11.480s (+2.6%)	12.028s (+3.1%)	0.548s	10	14.52x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	6.569s (-11.5% 🟢)	8.049s (-12.9% 🟢)	1.481s	15	1.00x
▲ Vercel	Nitro	6.888s (-10.8% 🟢)	8.727s (-7.2% 🟢)	1.839s	14	1.05x

🔍 Observability: Express | Nitro

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.204s (-0.7%)	1.002s (~)	0.001s (-6.7% 🟢)	1.010s (~)	0.806s	10	1.00x
💻 Local	Nitro	0.207s (-3.1%)	1.004s (~)	0.012s (-4.0%)	1.019s (~)	0.812s	10	1.02x
💻 Local	Express	0.209s (+5.0% 🔺)	1.004s (~)	0.012s (+0.8%)	1.019s (~)	0.809s	10	1.03x
🐘 Postgres	Express	0.211s (+3.0%)	0.993s (-0.6%)	0.002s (-6.3% 🟢)	1.009s (~)	0.798s	10	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.468s (-61.7% 🟢)	2.820s (-46.6% 🟢)	1.891s (+154.8% 🔺)	5.170s (-20.3% 🟢)	3.703s	10	1.00x
▲ Vercel	Express	1.540s (-38.5% 🟢)	3.100s (-24.2% 🟢)	1.519s (+58.1% 🔺)	5.100s (-8.8% 🟢)	3.560s	10	1.05x

🔍 Observability: Nitro | Express

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.606s (-2.8%)	1.004s (~)	0.004s (-3.7%)	1.022s (~)	0.415s	59	1.00x
🐘 Postgres	Express	0.635s (+0.8%)	1.005s (~)	0.004s (+6.6% 🔺)	1.023s (~)	0.388s	59	1.05x
💻 Local	Nitro	0.775s (-7.6% 🟢)	1.012s (~)	0.011s (+13.1% 🔺)	1.025s (-8.2% 🟢)	0.249s	59	1.28x
💻 Local	Express	0.861s (+13.7% 🔺)	1.014s (-1.5%)	0.010s (+4.7%)	1.118s (+7.5% 🔺)	0.257s	54	1.42x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	4.106s (-36.9% 🟢)	5.531s (-31.0% 🟢)	0.226s (-44.7% 🟢)	6.155s (-30.3% 🟢)	2.049s	10	1.00x
▲ Vercel	Nitro	4.401s (-85.1% 🟢)	6.039s (-80.4% 🟢)	0.233s (+108.0% 🔺)	6.716s (-78.9% 🟢)	2.315s	10	1.07x

🔍 Observability: Express | Nitro

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.922s (-4.8%)	1.104s (-11.5% 🟢)	0.000s (+77.8% 🔺)	1.132s (-10.0% 🟢)	0.210s	54	1.00x
🐘 Postgres	Express	0.973s (+1.3%)	1.328s (+3.9%)	0.000s (-100.0% 🟢)	1.358s (+3.9%)	0.385s	45	1.06x
💻 Local	Express	1.247s (+1.8%)	2.023s (~)	0.000s (+20.0% 🔺)	2.025s (~)	0.778s	30	1.35x
💻 Local	Nitro	1.266s (+3.6%)	2.023s (~)	0.000s (+100.0% 🔺)	2.025s (~)	0.758s	30	1.37x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.102s (-17.1% 🟢)	4.665s (-8.6% 🟢)	0.000s (-54.2% 🟢)	5.097s (-7.8% 🟢)	1.995s	12	1.00x
▲ Vercel	Nitro	3.496s (+14.6% 🔺)	5.240s (+19.3% 🔺)	0.000s (+18.2% 🔺)	5.691s (+18.3% 🔺)	2.194s	11	1.13x

🔍 Observability: Express | Nitro

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.726s (-3.6%)	2.067s (-3.5%)	0.000s (-100.0% 🟢)	2.094s (-3.7%)	0.367s	29	1.00x
🐘 Postgres	Express	1.769s (~)	2.100s (-3.6%)	0.000s (+Infinity% 🔺)	2.114s (-3.8%)	0.345s	29	1.02x
💻 Local	Express	2.971s (-14.3% 🟢)	3.422s (-15.2% 🟢)	0.000s (-65.3% 🟢)	3.424s (-15.2% 🟢)	0.453s	18	1.72x
💻 Local	Nitro	3.021s (-10.8% 🟢)	3.533s (-12.4% 🟢)	0.000s (-16.7% 🟢)	3.536s (-12.4% 🟢)	0.515s	18	1.75x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.775s (+16.6% 🔺)	6.453s (+20.1% 🔺)	0.000s (-100.0% 🟢)	6.877s (+18.7% 🔺)	2.102s	9	1.00x
▲ Vercel	Express	48.263s (+952.1% 🔺)	49.393s (+720.2% 🔺)	0.000s (+Infinity% 🔺)	49.959s (+673.7% 🔺)	1.696s	7	10.11x

🔍 Observability: Nitro | Express

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	12/21
🐘 Postgres	Nitro	14/21
▲ Vercel	Nitro	12/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	16/21
Nitro	🐘 Postgres	17/21

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

#1908) (#1909)

)

…ovements * origin/main: web: configure vercelPreset() for Vercel deployments (#1815) [core] Combine flow+step bundle and process steps eagerly (#1338) [world-vercel] Revert stream close control framing (#1891) [tarballs] Use turbo to build workspace deps before packing (#1908) # Conflicts: # tarballs/vercel.json

…ignal * origin/main: [core] Skip inline step execution when suspension also has a wait (#1924) [errors] Replace chalk import in @workfow/errors with inline ANSI shim (#1915) Fix compatibility with Zod 4.4.x (#1902) Serialize `run_failed`/`step_failed` errors through serialization pipeline (#1851) tarballs: redesign preview tarballs index page (#1911) Remove extra changeset (#1922) Add stable Next.js eager and lazy test coverage (#1747) Enforce per-(run, correlation) uniqueness for entity-creating events in world-postgres (#1878) fix(world-vercel): add default request timeout to workflow-server HTTP calls (#1807) Allow disabling step sourcemap with new `sourcemap` option in builders (#1842) [ci] Enable Vercel-prod e2e for tanstack-start (#1904) web: configure vercelPreset() for Vercel deployments (#1815) [core] Combine flow+step bundle and process steps eagerly (#1338) [world-vercel] Revert stream close control framing (#1891) [tarballs] Use turbo to build workspace deps before packing (#1908) # Conflicts: # packages/core/src/runtime/step-handler.test.ts # packages/core/src/runtime/step-handler.ts # packages/core/src/runtime/suspension-handler.ts # packages/core/src/step.test.ts # packages/world-local/src/storage/events-storage.ts # packages/world-postgres/src/drizzle/migrations/meta/_journal.json

VaguelySerious · 2026-05-04T05:13:00Z

Summary

The tarballs Vercel project's vercel.json sets

"buildCommand": "pnpm --filter tarballs build"

which only runs the tarballs package's build script (node scripts/pack.ts) and does not trigger turbo's dependsOn: ["^build"] chain. As a result every preview tarball gets packed with an empty dist/ directory — only bin/, package.json, README.md, and docs/ make it in. Downstream installs then fail with errors like:

Cannot find module '/.../node_modules/workflow/dist/next.cjs'

The old docs-based pipeline did not hit this because Vercel detected docs as a Next.js framework, ran turbo for it (which fans out via ^build), and pack.ts was wired as a prebuild step that ran after workspace deps were already built. Splitting tarballs out of docs in #1893 dropped that side-effect.

The fix is one line: switch the build command to

"buildCommand": "pnpm turbo build --filter=tarballs"

so turbo evaluates the build task for tarballs, fans out via ^build to compile every workspace dependency first, and only then runs tarballs#build (pack.ts) against the populated dist/ directories.

Test plan

pnpm turbo build --filter=tarballs locally — output tarballs contain the full dist/ tree (verified package/dist/next.cjs is present in tarballs/public/workflow.tgz).
Preview deployment for this branch produces tarballs that resolve workflow/next correctly when installed in a downstream Next.js app.
CI checks pass.

🤖 Generated with Claude Code

The standalone tarballs project's vercel.json sets "buildCommand": "pnpm --filter tarballs build", which only runs the tarballs package's build script (node scripts/pack.ts) and does not trigger turbo's `dependsOn: ["^build"]` chain. Every workspace package gets packed with an empty dist/ directory, so downstream installs fail with errors like "Cannot find module '<pkg>/dist/next.cjs'". The previous docs-based pipeline didn't hit this because Vercel detected docs as a Next.js framework, ran turbo for it, and pack.ts was wired as a prebuild step that ran after deps were already built. Switch the buildCommand to `pnpm turbo build --filter=tarballs` so turbo evaluates the build task for tarballs, fans out via ^build to compile every workspace dependency first, and only then runs tarballs#build (pack.ts) against the populated dist/ directories. Verified locally: a fresh build now produces tarballs containing the full dist/ tree (including dist/next.cjs). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

vercel · 2026-05-04T05:13:01Z

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

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	May 4, 2026 5:16am
example-nextjs-workflow-webpack	Ready	Preview, Comment	May 4, 2026 5:16am
example-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-astro-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-express-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-fastify-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-hono-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-nitro-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-nuxt-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-sveltekit-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-tanstack-start-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-vite-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workflow-docs	Ready	Preview, Comment, Open in v0	May 4, 2026 5:16am
workflow-swc-playground	Ready	Preview, Comment	May 4, 2026 5:16am
workflow-tarballs	Ready	Preview, Comment	May 4, 2026 5:16am
workflow-web	Ready	Preview, Comment	May 4, 2026 5:16am

changeset-bot · 2026-05-04T05:13:05Z

🦋 Changeset detected

Latest commit: 881c6f9

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

This PR includes changesets to release 0 packages

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

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 · 2026-05-04T05:13:11Z

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Skipped	Total
✅ ▲ Vercel Production	1011	67	1078
✅ 💻 Local Development	1090	86	1176
✅ 📦 Local Production	1090	86	1176
✅ 🐘 Local Postgres	1090	86	1176
✅ 🪟 Windows	98	0	98
✅ 📋 Other	552	36	588
Total	4931	361	5292

Details by Category

✅ ▲ Vercel Production

App	Passed	Skipped
✅ astro	91	7
✅ example	91	7
✅ express	91	7
✅ fastify	91	7
✅ hono	91	7
✅ nextjs-turbopack	96	2
✅ nextjs-webpack	96	2
✅ nitro	91	7
✅ nuxt	91	7
✅ sveltekit	91	7
✅ vite	91	7

✅ 💻 Local Development

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	98	0	0

✅ 📋 Other

App	Passed	Skipped
✅ e2e-local-dev-nest-stable	92	6
✅ e2e-local-dev-tanstack-start-stable	92	6
✅ e2e-local-postgres-nest-stable	92	6
✅ e2e-local-postgres-tanstack-start-stable	92	6
✅ e2e-local-prod-nest-stable	92	6
✅ e2e-local-prod-tanstack-start-stable	92	6

📋 View full workflow run

github-actions · 2026-05-04T05:13:16Z

📊 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	0.041s (-4.4%)	1.006s (~)	0.965s	10	1.00x
💻 Local	Express	0.045s (+1.6%)	1.005s (~)	0.960s	10	1.09x
🐘 Postgres	Nitro	0.058s (-38.8% 🟢)	1.010s (-3.2%)	0.952s	10	1.42x
🐘 Postgres	Express	0.063s (+9.3% 🔺)	1.009s (~)	0.946s	10	1.54x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	0.265s (-35.4% 🟢)	2.640s (+5.2% 🔺)	2.375s	10	1.00x
▲ Vercel	Express	0.292s (+24.0% 🔺)	2.562s (+20.0% 🔺)	2.270s	10	1.10x

🔍 Observability: Nitro | Express

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.129s (~)	2.006s (~)	0.877s	10	1.00x
💻 Local	Express	1.139s (+1.2%)	2.006s (~)	0.867s	10	1.01x
🐘 Postgres	Express	1.139s (-0.6%)	2.008s (~)	0.869s	10	1.01x
🐘 Postgres	Nitro	1.143s (~)	2.010s (~)	0.866s	10	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.923s (-50.6% 🟢)	3.880s (-34.3% 🟢)	1.957s	10	1.00x
▲ Vercel	Express	1.950s (+4.0%)	3.611s (-5.2% 🟢)	1.661s	10	1.01x

🔍 Observability: Nitro | Express

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	10.902s (-0.6%)	11.022s (~)	0.120s	3	1.00x
🐘 Postgres	Nitro	10.924s (~)	11.023s (~)	0.099s	3	1.00x
💻 Local	Nitro	10.938s (~)	11.024s (~)	0.086s	3	1.00x
💻 Local	Express	10.971s (~)	11.358s (+3.0%)	0.388s	3	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	17.794s (-25.0% 🟢)	19.925s (-20.7% 🟢)	2.132s	2	1.00x
▲ Vercel	Express	20.665s (+21.7% 🔺)	22.483s (+12.3% 🔺)	1.818s	2	1.16x

🔍 Observability: Nitro | Express

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	14.543s (~)	15.023s (~)	0.480s	4	1.00x
🐘 Postgres	Nitro	14.614s (~)	15.022s (~)	0.409s	4	1.00x
💻 Local	Nitro	15.052s (~)	15.780s (-1.6%)	0.728s	4	1.04x
💻 Local	Express	15.053s (+0.5%)	15.781s (+5.0%)	0.728s	4	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	34.782s (-46.0% 🟢)	36.761s (-44.8% 🟢)	1.980s	2	1.00x
▲ Vercel	Express	37.878s (-24.7% 🟢)	40.056s (-23.8% 🟢)	2.178s	2	1.09x

🔍 Observability: Nitro | Express

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	13.905s (-0.7%)	14.165s (-2.9%)	0.260s	7	1.00x
🐘 Postgres	Nitro	14.197s (+1.6%)	15.024s (+5.0%)	0.828s	6	1.02x
💻 Local	Nitro	16.877s (+0.6%)	17.198s (+1.0%)	0.321s	6	1.21x
💻 Local	Express	16.948s (+2.1%)	17.030s (~)	0.082s	6	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	54.672s (-54.9% 🟢)	56.262s (-54.5% 🟢)	1.590s	2	1.00x
▲ Vercel	Nitro	57.739s (-86.3% 🟢)	59.801s (-85.9% 🟢)	2.063s	2	1.06x

🔍 Observability: Express | Nitro

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.252s (-1.7%)	2.008s (~)	0.755s	15	1.00x
🐘 Postgres	Express	1.267s (~)	2.009s (~)	0.743s	15	1.01x
💻 Local	Express	1.511s (+1.5%)	2.005s (~)	0.494s	15	1.21x
💻 Local	Nitro	1.530s (-6.2% 🟢)	2.006s (-3.3%)	0.476s	15	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.831s (-1.0%)	4.302s (-7.0% 🟢)	1.470s	7	1.00x
▲ Vercel	Nitro	3.266s (+15.9% 🔺)	4.773s (+10.4% 🔺)	1.507s	7	1.15x

🔍 Observability: Express | Nitro

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.331s (-1.3%)	3.009s (~)	0.678s	10	1.00x
🐘 Postgres	Nitro	2.356s (~)	3.010s (~)	0.654s	10	1.01x
💻 Local	Nitro	3.070s (-2.4%)	3.885s (~)	0.815s	8	1.32x
💻 Local	Express	3.072s (+4.0%)	3.889s (+12.6% 🔺)	0.817s	8	1.32x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.526s (-30.2% 🟢)	4.140s (-19.0% 🟢)	1.614s	8	1.00x
▲ Vercel	Nitro	3.790s (-6.5% 🟢)	5.260s (-11.2% 🟢)	1.470s	6	1.50x

🔍 Observability: Express | Nitro

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	3.473s (~)	4.008s (~)	0.535s	8	1.00x
🐘 Postgres	Express	3.520s (+1.0%)	4.012s (~)	0.492s	8	1.01x
💻 Local	Express	8.370s (~)	9.022s (~)	0.652s	4	2.41x
💻 Local	Nitro	8.495s (+1.7%)	9.026s (~)	0.531s	4	2.45x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.833s (-19.6% 🟢)	4.761s (-14.0% 🟢)	1.928s	7	1.00x
▲ Vercel	Express	3.479s (-18.0% 🟢)	5.061s (-17.4% 🟢)	1.583s	6	1.23x

🔍 Observability: Nitro | Express

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.258s (~)	2.010s (~)	0.751s	15	1.00x
🐘 Postgres	Express	1.281s (+1.9%)	2.008s (~)	0.727s	15	1.02x
💻 Local	Express	1.548s (-18.3% 🟢)	2.007s (-15.1% 🟢)	0.459s	15	1.23x
💻 Local	Nitro	1.569s (-15.9% 🟢)	2.007s (-14.3% 🟢)	0.437s	15	1.25x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.983s (-23.2% 🟢)	3.597s (-17.3% 🟢)	1.614s	9	1.00x
▲ Vercel	Nitro	2.025s (-17.7% 🟢)	3.788s (-9.2% 🟢)	1.763s	8	1.02x

🔍 Observability: Express | Nitro

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.327s (-0.5%)	3.009s (~)	0.682s	10	1.00x
🐘 Postgres	Express	2.331s (~)	3.010s (~)	0.679s	10	1.00x
💻 Local	Nitro	3.050s (~)	3.885s (~)	0.835s	8	1.31x
💻 Local	Express	3.241s (+3.5%)	3.884s (+3.2%)	0.643s	8	1.39x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.370s (-26.7% 🟢)	4.172s (-17.8% 🟢)	1.801s	8	1.00x
▲ Vercel	Express	2.377s (-25.6% 🟢)	3.815s (-20.4% 🟢)	1.439s	8	1.00x

🔍 Observability: Nitro | Express

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.466s (-0.9%)	4.011s (~)	0.545s	8	1.00x
🐘 Postgres	Nitro	3.470s (~)	4.011s (~)	0.541s	8	1.00x
💻 Local	Nitro	9.426s (+3.1%)	9.772s (-2.5%)	0.346s	4	2.72x
💻 Local	Express	9.546s (+8.5% 🔺)	10.021s (+8.1% 🔺)	0.475s	3	2.75x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.719s (-57.6% 🟢)	4.485s (-45.2% 🟢)	1.766s	7	1.00x
▲ Vercel	Nitro	2.729s (-46.4% 🟢)	4.372s (-35.9% 🟢)	1.643s	7	1.00x

🔍 Observability: Express | Nitro

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.828s (+0.9%)	1.006s (~)	0.179s	60	1.00x
🐘 Postgres	Express	0.828s (-1.3%)	1.006s (-1.7%)	0.178s	60	1.00x
💻 Local	Nitro	1.015s (+3.5%)	1.700s (+55.4% 🔺)	0.685s	36	1.23x
💻 Local	Express	1.139s (+15.7% 🔺)	1.584s (+47.3% 🔺)	0.446s	38	1.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	9.922s (-55.0% 🟢)	11.725s (-51.2% 🟢)	1.803s	6	1.00x
▲ Vercel	Express	10.164s (-46.6% 🟢)	11.834s (-44.5% 🟢)	1.671s	6	1.02x

🔍 Observability: Nitro | Express

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.966s (-0.5%)	2.227s (-1.4%)	0.261s	41	1.00x
🐘 Postgres	Nitro	1.999s (+3.7%)	2.494s (+18.7% 🔺)	0.495s	37	1.02x
💻 Local	Nitro	3.118s (+2.7%)	4.010s (+6.7% 🔺)	0.892s	23	1.59x
💻 Local	Express	3.120s (+3.4%)	3.966s (+10.6% 🔺)	0.846s	23	1.59x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	28.179s (-28.6% 🟢)	30.159s (-27.0% 🟢)	1.980s	3	1.00x
▲ Vercel	Express	29.648s (-14.1% 🟢)	31.610s (-14.1% 🟢)	1.962s	3	1.05x

🔍 Observability: Nitro | Express

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	4.042s (-1.5%)	4.566s (-0.8%)	0.524s	27	1.00x
🐘 Postgres	Express	4.045s (+1.4%)	4.703s (+7.6% 🔺)	0.658s	26	1.00x
💻 Local	Express	9.340s (+1.4%)	10.019s (~)	0.678s	12	2.31x
💻 Local	Nitro	9.427s (+1.4%)	10.019s (~)	0.592s	12	2.33x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	85.866s (-34.0% 🟢)	88.100s (-33.3% 🟢)	2.234s	2	1.00x
▲ Vercel	Nitro	86.845s (-10.4% 🟢)	88.977s (-9.6% 🟢)	2.132s	2	1.01x

🔍 Observability: Express | Nitro

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.275s (-3.0%)	1.007s (~)	0.732s	60	1.00x
🐘 Postgres	Express	0.283s (~)	1.007s (~)	0.724s	60	1.03x
💻 Local	Express	0.611s (+9.0% 🔺)	1.005s (~)	0.394s	60	2.22x
💻 Local	Nitro	0.643s (+6.4% 🔺)	1.005s (-1.6%)	0.362s	60	2.34x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.416s (-14.8% 🟢)	3.025s (-9.7% 🟢)	1.610s	20	1.00x
▲ Vercel	Express	1.589s (-18.7% 🟢)	3.252s (-10.6% 🟢)	1.664s	19	1.12x

🔍 Observability: Nitro | Express

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.484s (-2.6%)	1.007s (~)	0.523s	90	1.00x
🐘 Postgres	Express	0.491s (-3.8%)	1.006s (~)	0.516s	90	1.01x
💻 Local	Express	2.545s (+1.3%)	3.009s (~)	0.464s	30	5.26x
💻 Local	Nitro	2.600s (+2.4%)	3.009s (~)	0.409s	30	5.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.744s (-14.9% 🟢)	4.352s (-9.7% 🟢)	1.608s	21	1.00x
▲ Vercel	Express	3.035s (~)	4.735s (-1.5%)	1.700s	20	1.11x

🔍 Observability: Nitro | Express

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.790s (~)	1.007s (~)	0.217s	120	1.00x
🐘 Postgres	Express	0.814s (-0.6%)	1.009s (-0.8%)	0.196s	119	1.03x
💻 Local	Express	11.272s (+0.7%)	11.937s (~)	0.665s	11	14.26x
💻 Local	Nitro	11.480s (+2.6%)	12.028s (+3.1%)	0.548s	10	14.52x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	6.569s (-11.5% 🟢)	8.049s (-12.9% 🟢)	1.481s	15	1.00x
▲ Vercel	Nitro	6.888s (-10.8% 🟢)	8.727s (-7.2% 🟢)	1.839s	14	1.05x

🔍 Observability: Express | Nitro

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.204s (-0.7%)	1.002s (~)	0.001s (-6.7% 🟢)	1.010s (~)	0.806s	10	1.00x
💻 Local	Nitro	0.207s (-3.1%)	1.004s (~)	0.012s (-4.0%)	1.019s (~)	0.812s	10	1.02x
💻 Local	Express	0.209s (+5.0% 🔺)	1.004s (~)	0.012s (+0.8%)	1.019s (~)	0.809s	10	1.03x
🐘 Postgres	Express	0.211s (+3.0%)	0.993s (-0.6%)	0.002s (-6.3% 🟢)	1.009s (~)	0.798s	10	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.468s (-61.7% 🟢)	2.820s (-46.6% 🟢)	1.891s (+154.8% 🔺)	5.170s (-20.3% 🟢)	3.703s	10	1.00x
▲ Vercel	Express	1.540s (-38.5% 🟢)	3.100s (-24.2% 🟢)	1.519s (+58.1% 🔺)	5.100s (-8.8% 🟢)	3.560s	10	1.05x

🔍 Observability: Nitro | Express

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.606s (-2.8%)	1.004s (~)	0.004s (-3.7%)	1.022s (~)	0.415s	59	1.00x
🐘 Postgres	Express	0.635s (+0.8%)	1.005s (~)	0.004s (+6.6% 🔺)	1.023s (~)	0.388s	59	1.05x
💻 Local	Nitro	0.775s (-7.6% 🟢)	1.012s (~)	0.011s (+13.1% 🔺)	1.025s (-8.2% 🟢)	0.249s	59	1.28x
💻 Local	Express	0.861s (+13.7% 🔺)	1.014s (-1.5%)	0.010s (+4.7%)	1.118s (+7.5% 🔺)	0.257s	54	1.42x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	4.106s (-36.9% 🟢)	5.531s (-31.0% 🟢)	0.226s (-44.7% 🟢)	6.155s (-30.3% 🟢)	2.049s	10	1.00x
▲ Vercel	Nitro	4.401s (-85.1% 🟢)	6.039s (-80.4% 🟢)	0.233s (+108.0% 🔺)	6.716s (-78.9% 🟢)	2.315s	10	1.07x

🔍 Observability: Express | Nitro

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.922s (-4.8%)	1.104s (-11.5% 🟢)	0.000s (+77.8% 🔺)	1.132s (-10.0% 🟢)	0.210s	54	1.00x
🐘 Postgres	Express	0.973s (+1.3%)	1.328s (+3.9%)	0.000s (-100.0% 🟢)	1.358s (+3.9%)	0.385s	45	1.06x
💻 Local	Express	1.247s (+1.8%)	2.023s (~)	0.000s (+20.0% 🔺)	2.025s (~)	0.778s	30	1.35x
💻 Local	Nitro	1.266s (+3.6%)	2.023s (~)	0.000s (+100.0% 🔺)	2.025s (~)	0.758s	30	1.37x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.102s (-17.1% 🟢)	4.665s (-8.6% 🟢)	0.000s (-54.2% 🟢)	5.097s (-7.8% 🟢)	1.995s	12	1.00x
▲ Vercel	Nitro	3.496s (+14.6% 🔺)	5.240s (+19.3% 🔺)	0.000s (+18.2% 🔺)	5.691s (+18.3% 🔺)	2.194s	11	1.13x

🔍 Observability: Express | Nitro

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.726s (-3.6%)	2.067s (-3.5%)	0.000s (-100.0% 🟢)	2.094s (-3.7%)	0.367s	29	1.00x
🐘 Postgres	Express	1.769s (~)	2.100s (-3.6%)	0.000s (+Infinity% 🔺)	2.114s (-3.8%)	0.345s	29	1.02x
💻 Local	Express	2.971s (-14.3% 🟢)	3.422s (-15.2% 🟢)	0.000s (-65.3% 🟢)	3.424s (-15.2% 🟢)	0.453s	18	1.72x
💻 Local	Nitro	3.021s (-10.8% 🟢)	3.533s (-12.4% 🟢)	0.000s (-16.7% 🟢)	3.536s (-12.4% 🟢)	0.515s	18	1.75x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.775s (+16.6% 🔺)	6.453s (+20.1% 🔺)	0.000s (-100.0% 🟢)	6.877s (+18.7% 🔺)	2.102s	9	1.00x
▲ Vercel	Express	48.263s (+952.1% 🔺)	49.393s (+720.2% 🔺)	0.000s (+Infinity% 🔺)	49.959s (+673.7% 🔺)	1.696s	7	10.11x

🔍 Observability: Nitro | Express

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	12/21
🐘 Postgres	Nitro	14/21
▲ Vercel	Nitro	12/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	16/21
Nitro	🐘 Postgres	17/21

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

#1908) (#1909)

)

…ovements * origin/main: web: configure vercelPreset() for Vercel deployments (#1815) [core] Combine flow+step bundle and process steps eagerly (#1338) [world-vercel] Revert stream close control framing (#1891) [tarballs] Use turbo to build workspace deps before packing (#1908) # Conflicts: # tarballs/vercel.json

…ignal * origin/main: [core] Skip inline step execution when suspension also has a wait (#1924) [errors] Replace chalk import in @workfow/errors with inline ANSI shim (#1915) Fix compatibility with Zod 4.4.x (#1902) Serialize `run_failed`/`step_failed` errors through serialization pipeline (#1851) tarballs: redesign preview tarballs index page (#1911) Remove extra changeset (#1922) Add stable Next.js eager and lazy test coverage (#1747) Enforce per-(run, correlation) uniqueness for entity-creating events in world-postgres (#1878) fix(world-vercel): add default request timeout to workflow-server HTTP calls (#1807) Allow disabling step sourcemap with new `sourcemap` option in builders (#1842) [ci] Enable Vercel-prod e2e for tanstack-start (#1904) web: configure vercelPreset() for Vercel deployments (#1815) [core] Combine flow+step bundle and process steps eagerly (#1338) [world-vercel] Revert stream close control framing (#1891) [tarballs] Use turbo to build workspace deps before packing (#1908) # Conflicts: # packages/core/src/runtime/step-handler.test.ts # packages/core/src/runtime/step-handler.ts # packages/core/src/runtime/suspension-handler.ts # packages/core/src/step.test.ts # packages/world-local/src/storage/events-storage.ts # packages/world-postgres/src/drizzle/migrations/meta/_journal.json

VaguelySerious · 2026-05-04T05:13:00Z

Summary

The tarballs Vercel project's vercel.json sets

"buildCommand": "pnpm --filter tarballs build"

which only runs the tarballs package's build script (node scripts/pack.ts) and does not trigger turbo's dependsOn: ["^build"] chain. As a result every preview tarball gets packed with an empty dist/ directory — only bin/, package.json, README.md, and docs/ make it in. Downstream installs then fail with errors like:

Cannot find module '/.../node_modules/workflow/dist/next.cjs'

The old docs-based pipeline did not hit this because Vercel detected docs as a Next.js framework, ran turbo for it (which fans out via ^build), and pack.ts was wired as a prebuild step that ran after workspace deps were already built. Splitting tarballs out of docs in #1893 dropped that side-effect.

The fix is one line: switch the build command to

"buildCommand": "pnpm turbo build --filter=tarballs"

so turbo evaluates the build task for tarballs, fans out via ^build to compile every workspace dependency first, and only then runs tarballs#build (pack.ts) against the populated dist/ directories.

Test plan

pnpm turbo build --filter=tarballs locally — output tarballs contain the full dist/ tree (verified package/dist/next.cjs is present in tarballs/public/workflow.tgz).
Preview deployment for this branch produces tarballs that resolve workflow/next correctly when installed in a downstream Next.js app.
CI checks pass.

🤖 Generated with Claude Code

The standalone tarballs project's vercel.json sets "buildCommand": "pnpm --filter tarballs build", which only runs the tarballs package's build script (node scripts/pack.ts) and does not trigger turbo's `dependsOn: ["^build"]` chain. Every workspace package gets packed with an empty dist/ directory, so downstream installs fail with errors like "Cannot find module '<pkg>/dist/next.cjs'". The previous docs-based pipeline didn't hit this because Vercel detected docs as a Next.js framework, ran turbo for it, and pack.ts was wired as a prebuild step that ran after deps were already built. Switch the buildCommand to `pnpm turbo build --filter=tarballs` so turbo evaluates the build task for tarballs, fans out via ^build to compile every workspace dependency first, and only then runs tarballs#build (pack.ts) against the populated dist/ directories. Verified locally: a fresh build now produces tarballs containing the full dist/ tree (including dist/next.cjs). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

vercel · 2026-05-04T05:13:01Z

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

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	May 4, 2026 5:16am
example-nextjs-workflow-webpack	Ready	Preview, Comment	May 4, 2026 5:16am
example-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-astro-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-express-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-fastify-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-hono-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-nitro-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-nuxt-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-sveltekit-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-tanstack-start-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-vite-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workflow-docs	Ready	Preview, Comment, Open in v0	May 4, 2026 5:16am
workflow-swc-playground	Ready	Preview, Comment	May 4, 2026 5:16am
workflow-tarballs	Ready	Preview, Comment	May 4, 2026 5:16am
workflow-web	Ready	Preview, Comment	May 4, 2026 5:16am

changeset-bot · 2026-05-04T05:13:05Z

🦋 Changeset detected

Latest commit: 881c6f9

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

This PR includes changesets to release 0 packages

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

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 · 2026-05-04T05:13:11Z

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Skipped	Total
✅ ▲ Vercel Production	1011	67	1078
✅ 💻 Local Development	1090	86	1176
✅ 📦 Local Production	1090	86	1176
✅ 🐘 Local Postgres	1090	86	1176
✅ 🪟 Windows	98	0	98
✅ 📋 Other	552	36	588
Total	4931	361	5292

Details by Category

✅ ▲ Vercel Production

App	Passed	Skipped
✅ astro	91	7
✅ example	91	7
✅ express	91	7
✅ fastify	91	7
✅ hono	91	7
✅ nextjs-turbopack	96	2
✅ nextjs-webpack	96	2
✅ nitro	91	7
✅ nuxt	91	7
✅ sveltekit	91	7
✅ vite	91	7

✅ 💻 Local Development

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	98	0	0

✅ 📋 Other

App	Passed	Skipped
✅ e2e-local-dev-nest-stable	92	6
✅ e2e-local-dev-tanstack-start-stable	92	6
✅ e2e-local-postgres-nest-stable	92	6
✅ e2e-local-postgres-tanstack-start-stable	92	6
✅ e2e-local-prod-nest-stable	92	6
✅ e2e-local-prod-tanstack-start-stable	92	6

📋 View full workflow run

github-actions · 2026-05-04T05:13:16Z

📊 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	0.041s (-4.4%)	1.006s (~)	0.965s	10	1.00x
💻 Local	Express	0.045s (+1.6%)	1.005s (~)	0.960s	10	1.09x
🐘 Postgres	Nitro	0.058s (-38.8% 🟢)	1.010s (-3.2%)	0.952s	10	1.42x
🐘 Postgres	Express	0.063s (+9.3% 🔺)	1.009s (~)	0.946s	10	1.54x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	0.265s (-35.4% 🟢)	2.640s (+5.2% 🔺)	2.375s	10	1.00x
▲ Vercel	Express	0.292s (+24.0% 🔺)	2.562s (+20.0% 🔺)	2.270s	10	1.10x

🔍 Observability: Nitro | Express

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.129s (~)	2.006s (~)	0.877s	10	1.00x
💻 Local	Express	1.139s (+1.2%)	2.006s (~)	0.867s	10	1.01x
🐘 Postgres	Express	1.139s (-0.6%)	2.008s (~)	0.869s	10	1.01x
🐘 Postgres	Nitro	1.143s (~)	2.010s (~)	0.866s	10	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.923s (-50.6% 🟢)	3.880s (-34.3% 🟢)	1.957s	10	1.00x
▲ Vercel	Express	1.950s (+4.0%)	3.611s (-5.2% 🟢)	1.661s	10	1.01x

🔍 Observability: Nitro | Express

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	10.902s (-0.6%)	11.022s (~)	0.120s	3	1.00x
🐘 Postgres	Nitro	10.924s (~)	11.023s (~)	0.099s	3	1.00x
💻 Local	Nitro	10.938s (~)	11.024s (~)	0.086s	3	1.00x
💻 Local	Express	10.971s (~)	11.358s (+3.0%)	0.388s	3	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	17.794s (-25.0% 🟢)	19.925s (-20.7% 🟢)	2.132s	2	1.00x
▲ Vercel	Express	20.665s (+21.7% 🔺)	22.483s (+12.3% 🔺)	1.818s	2	1.16x

🔍 Observability: Nitro | Express

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	14.543s (~)	15.023s (~)	0.480s	4	1.00x
🐘 Postgres	Nitro	14.614s (~)	15.022s (~)	0.409s	4	1.00x
💻 Local	Nitro	15.052s (~)	15.780s (-1.6%)	0.728s	4	1.04x
💻 Local	Express	15.053s (+0.5%)	15.781s (+5.0%)	0.728s	4	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	34.782s (-46.0% 🟢)	36.761s (-44.8% 🟢)	1.980s	2	1.00x
▲ Vercel	Express	37.878s (-24.7% 🟢)	40.056s (-23.8% 🟢)	2.178s	2	1.09x

🔍 Observability: Nitro | Express

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	13.905s (-0.7%)	14.165s (-2.9%)	0.260s	7	1.00x
🐘 Postgres	Nitro	14.197s (+1.6%)	15.024s (+5.0%)	0.828s	6	1.02x
💻 Local	Nitro	16.877s (+0.6%)	17.198s (+1.0%)	0.321s	6	1.21x
💻 Local	Express	16.948s (+2.1%)	17.030s (~)	0.082s	6	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	54.672s (-54.9% 🟢)	56.262s (-54.5% 🟢)	1.590s	2	1.00x
▲ Vercel	Nitro	57.739s (-86.3% 🟢)	59.801s (-85.9% 🟢)	2.063s	2	1.06x

🔍 Observability: Express | Nitro

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.252s (-1.7%)	2.008s (~)	0.755s	15	1.00x
🐘 Postgres	Express	1.267s (~)	2.009s (~)	0.743s	15	1.01x
💻 Local	Express	1.511s (+1.5%)	2.005s (~)	0.494s	15	1.21x
💻 Local	Nitro	1.530s (-6.2% 🟢)	2.006s (-3.3%)	0.476s	15	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.831s (-1.0%)	4.302s (-7.0% 🟢)	1.470s	7	1.00x
▲ Vercel	Nitro	3.266s (+15.9% 🔺)	4.773s (+10.4% 🔺)	1.507s	7	1.15x

🔍 Observability: Express | Nitro

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.331s (-1.3%)	3.009s (~)	0.678s	10	1.00x
🐘 Postgres	Nitro	2.356s (~)	3.010s (~)	0.654s	10	1.01x
💻 Local	Nitro	3.070s (-2.4%)	3.885s (~)	0.815s	8	1.32x
💻 Local	Express	3.072s (+4.0%)	3.889s (+12.6% 🔺)	0.817s	8	1.32x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.526s (-30.2% 🟢)	4.140s (-19.0% 🟢)	1.614s	8	1.00x
▲ Vercel	Nitro	3.790s (-6.5% 🟢)	5.260s (-11.2% 🟢)	1.470s	6	1.50x

🔍 Observability: Express | Nitro

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	3.473s (~)	4.008s (~)	0.535s	8	1.00x
🐘 Postgres	Express	3.520s (+1.0%)	4.012s (~)	0.492s	8	1.01x
💻 Local	Express	8.370s (~)	9.022s (~)	0.652s	4	2.41x
💻 Local	Nitro	8.495s (+1.7%)	9.026s (~)	0.531s	4	2.45x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.833s (-19.6% 🟢)	4.761s (-14.0% 🟢)	1.928s	7	1.00x
▲ Vercel	Express	3.479s (-18.0% 🟢)	5.061s (-17.4% 🟢)	1.583s	6	1.23x

🔍 Observability: Nitro | Express

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.258s (~)	2.010s (~)	0.751s	15	1.00x
🐘 Postgres	Express	1.281s (+1.9%)	2.008s (~)	0.727s	15	1.02x
💻 Local	Express	1.548s (-18.3% 🟢)	2.007s (-15.1% 🟢)	0.459s	15	1.23x
💻 Local	Nitro	1.569s (-15.9% 🟢)	2.007s (-14.3% 🟢)	0.437s	15	1.25x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.983s (-23.2% 🟢)	3.597s (-17.3% 🟢)	1.614s	9	1.00x
▲ Vercel	Nitro	2.025s (-17.7% 🟢)	3.788s (-9.2% 🟢)	1.763s	8	1.02x

🔍 Observability: Express | Nitro

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.327s (-0.5%)	3.009s (~)	0.682s	10	1.00x
🐘 Postgres	Express	2.331s (~)	3.010s (~)	0.679s	10	1.00x
💻 Local	Nitro	3.050s (~)	3.885s (~)	0.835s	8	1.31x
💻 Local	Express	3.241s (+3.5%)	3.884s (+3.2%)	0.643s	8	1.39x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.370s (-26.7% 🟢)	4.172s (-17.8% 🟢)	1.801s	8	1.00x
▲ Vercel	Express	2.377s (-25.6% 🟢)	3.815s (-20.4% 🟢)	1.439s	8	1.00x

🔍 Observability: Nitro | Express

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.466s (-0.9%)	4.011s (~)	0.545s	8	1.00x
🐘 Postgres	Nitro	3.470s (~)	4.011s (~)	0.541s	8	1.00x
💻 Local	Nitro	9.426s (+3.1%)	9.772s (-2.5%)	0.346s	4	2.72x
💻 Local	Express	9.546s (+8.5% 🔺)	10.021s (+8.1% 🔺)	0.475s	3	2.75x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.719s (-57.6% 🟢)	4.485s (-45.2% 🟢)	1.766s	7	1.00x
▲ Vercel	Nitro	2.729s (-46.4% 🟢)	4.372s (-35.9% 🟢)	1.643s	7	1.00x

🔍 Observability: Express | Nitro

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.828s (+0.9%)	1.006s (~)	0.179s	60	1.00x
🐘 Postgres	Express	0.828s (-1.3%)	1.006s (-1.7%)	0.178s	60	1.00x
💻 Local	Nitro	1.015s (+3.5%)	1.700s (+55.4% 🔺)	0.685s	36	1.23x
💻 Local	Express	1.139s (+15.7% 🔺)	1.584s (+47.3% 🔺)	0.446s	38	1.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	9.922s (-55.0% 🟢)	11.725s (-51.2% 🟢)	1.803s	6	1.00x
▲ Vercel	Express	10.164s (-46.6% 🟢)	11.834s (-44.5% 🟢)	1.671s	6	1.02x

🔍 Observability: Nitro | Express

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.966s (-0.5%)	2.227s (-1.4%)	0.261s	41	1.00x
🐘 Postgres	Nitro	1.999s (+3.7%)	2.494s (+18.7% 🔺)	0.495s	37	1.02x
💻 Local	Nitro	3.118s (+2.7%)	4.010s (+6.7% 🔺)	0.892s	23	1.59x
💻 Local	Express	3.120s (+3.4%)	3.966s (+10.6% 🔺)	0.846s	23	1.59x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	28.179s (-28.6% 🟢)	30.159s (-27.0% 🟢)	1.980s	3	1.00x
▲ Vercel	Express	29.648s (-14.1% 🟢)	31.610s (-14.1% 🟢)	1.962s	3	1.05x

🔍 Observability: Nitro | Express

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	4.042s (-1.5%)	4.566s (-0.8%)	0.524s	27	1.00x
🐘 Postgres	Express	4.045s (+1.4%)	4.703s (+7.6% 🔺)	0.658s	26	1.00x
💻 Local	Express	9.340s (+1.4%)	10.019s (~)	0.678s	12	2.31x
💻 Local	Nitro	9.427s (+1.4%)	10.019s (~)	0.592s	12	2.33x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	85.866s (-34.0% 🟢)	88.100s (-33.3% 🟢)	2.234s	2	1.00x
▲ Vercel	Nitro	86.845s (-10.4% 🟢)	88.977s (-9.6% 🟢)	2.132s	2	1.01x

🔍 Observability: Express | Nitro

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.275s (-3.0%)	1.007s (~)	0.732s	60	1.00x
🐘 Postgres	Express	0.283s (~)	1.007s (~)	0.724s	60	1.03x
💻 Local	Express	0.611s (+9.0% 🔺)	1.005s (~)	0.394s	60	2.22x
💻 Local	Nitro	0.643s (+6.4% 🔺)	1.005s (-1.6%)	0.362s	60	2.34x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.416s (-14.8% 🟢)	3.025s (-9.7% 🟢)	1.610s	20	1.00x
▲ Vercel	Express	1.589s (-18.7% 🟢)	3.252s (-10.6% 🟢)	1.664s	19	1.12x

🔍 Observability: Nitro | Express

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.484s (-2.6%)	1.007s (~)	0.523s	90	1.00x
🐘 Postgres	Express	0.491s (-3.8%)	1.006s (~)	0.516s	90	1.01x
💻 Local	Express	2.545s (+1.3%)	3.009s (~)	0.464s	30	5.26x
💻 Local	Nitro	2.600s (+2.4%)	3.009s (~)	0.409s	30	5.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.744s (-14.9% 🟢)	4.352s (-9.7% 🟢)	1.608s	21	1.00x
▲ Vercel	Express	3.035s (~)	4.735s (-1.5%)	1.700s	20	1.11x

🔍 Observability: Nitro | Express

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.790s (~)	1.007s (~)	0.217s	120	1.00x
🐘 Postgres	Express	0.814s (-0.6%)	1.009s (-0.8%)	0.196s	119	1.03x
💻 Local	Express	11.272s (+0.7%)	11.937s (~)	0.665s	11	14.26x
💻 Local	Nitro	11.480s (+2.6%)	12.028s (+3.1%)	0.548s	10	14.52x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	6.569s (-11.5% 🟢)	8.049s (-12.9% 🟢)	1.481s	15	1.00x
▲ Vercel	Nitro	6.888s (-10.8% 🟢)	8.727s (-7.2% 🟢)	1.839s	14	1.05x

🔍 Observability: Express | Nitro

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.204s (-0.7%)	1.002s (~)	0.001s (-6.7% 🟢)	1.010s (~)	0.806s	10	1.00x
💻 Local	Nitro	0.207s (-3.1%)	1.004s (~)	0.012s (-4.0%)	1.019s (~)	0.812s	10	1.02x
💻 Local	Express	0.209s (+5.0% 🔺)	1.004s (~)	0.012s (+0.8%)	1.019s (~)	0.809s	10	1.03x
🐘 Postgres	Express	0.211s (+3.0%)	0.993s (-0.6%)	0.002s (-6.3% 🟢)	1.009s (~)	0.798s	10	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.468s (-61.7% 🟢)	2.820s (-46.6% 🟢)	1.891s (+154.8% 🔺)	5.170s (-20.3% 🟢)	3.703s	10	1.00x
▲ Vercel	Express	1.540s (-38.5% 🟢)	3.100s (-24.2% 🟢)	1.519s (+58.1% 🔺)	5.100s (-8.8% 🟢)	3.560s	10	1.05x

🔍 Observability: Nitro | Express

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.606s (-2.8%)	1.004s (~)	0.004s (-3.7%)	1.022s (~)	0.415s	59	1.00x
🐘 Postgres	Express	0.635s (+0.8%)	1.005s (~)	0.004s (+6.6% 🔺)	1.023s (~)	0.388s	59	1.05x
💻 Local	Nitro	0.775s (-7.6% 🟢)	1.012s (~)	0.011s (+13.1% 🔺)	1.025s (-8.2% 🟢)	0.249s	59	1.28x
💻 Local	Express	0.861s (+13.7% 🔺)	1.014s (-1.5%)	0.010s (+4.7%)	1.118s (+7.5% 🔺)	0.257s	54	1.42x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	4.106s (-36.9% 🟢)	5.531s (-31.0% 🟢)	0.226s (-44.7% 🟢)	6.155s (-30.3% 🟢)	2.049s	10	1.00x
▲ Vercel	Nitro	4.401s (-85.1% 🟢)	6.039s (-80.4% 🟢)	0.233s (+108.0% 🔺)	6.716s (-78.9% 🟢)	2.315s	10	1.07x

🔍 Observability: Express | Nitro

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.922s (-4.8%)	1.104s (-11.5% 🟢)	0.000s (+77.8% 🔺)	1.132s (-10.0% 🟢)	0.210s	54	1.00x
🐘 Postgres	Express	0.973s (+1.3%)	1.328s (+3.9%)	0.000s (-100.0% 🟢)	1.358s (+3.9%)	0.385s	45	1.06x
💻 Local	Express	1.247s (+1.8%)	2.023s (~)	0.000s (+20.0% 🔺)	2.025s (~)	0.778s	30	1.35x
💻 Local	Nitro	1.266s (+3.6%)	2.023s (~)	0.000s (+100.0% 🔺)	2.025s (~)	0.758s	30	1.37x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.102s (-17.1% 🟢)	4.665s (-8.6% 🟢)	0.000s (-54.2% 🟢)	5.097s (-7.8% 🟢)	1.995s	12	1.00x
▲ Vercel	Nitro	3.496s (+14.6% 🔺)	5.240s (+19.3% 🔺)	0.000s (+18.2% 🔺)	5.691s (+18.3% 🔺)	2.194s	11	1.13x

🔍 Observability: Express | Nitro

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.726s (-3.6%)	2.067s (-3.5%)	0.000s (-100.0% 🟢)	2.094s (-3.7%)	0.367s	29	1.00x
🐘 Postgres	Express	1.769s (~)	2.100s (-3.6%)	0.000s (+Infinity% 🔺)	2.114s (-3.8%)	0.345s	29	1.02x
💻 Local	Express	2.971s (-14.3% 🟢)	3.422s (-15.2% 🟢)	0.000s (-65.3% 🟢)	3.424s (-15.2% 🟢)	0.453s	18	1.72x
💻 Local	Nitro	3.021s (-10.8% 🟢)	3.533s (-12.4% 🟢)	0.000s (-16.7% 🟢)	3.536s (-12.4% 🟢)	0.515s	18	1.75x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.775s (+16.6% 🔺)	6.453s (+20.1% 🔺)	0.000s (-100.0% 🟢)	6.877s (+18.7% 🔺)	2.102s	9	1.00x
▲ Vercel	Express	48.263s (+952.1% 🔺)	49.393s (+720.2% 🔺)	0.000s (+Infinity% 🔺)	49.959s (+673.7% 🔺)	1.696s	7	10.11x

🔍 Observability: Nitro | Express

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	12/21
🐘 Postgres	Nitro	14/21
▲ Vercel	Nitro	12/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	16/21
Nitro	🐘 Postgres	17/21

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

#1908) (#1909)

)

…ovements * origin/main: web: configure vercelPreset() for Vercel deployments (#1815) [core] Combine flow+step bundle and process steps eagerly (#1338) [world-vercel] Revert stream close control framing (#1891) [tarballs] Use turbo to build workspace deps before packing (#1908) # Conflicts: # tarballs/vercel.json

…ignal * origin/main: [core] Skip inline step execution when suspension also has a wait (#1924) [errors] Replace chalk import in @workfow/errors with inline ANSI shim (#1915) Fix compatibility with Zod 4.4.x (#1902) Serialize `run_failed`/`step_failed` errors through serialization pipeline (#1851) tarballs: redesign preview tarballs index page (#1911) Remove extra changeset (#1922) Add stable Next.js eager and lazy test coverage (#1747) Enforce per-(run, correlation) uniqueness for entity-creating events in world-postgres (#1878) fix(world-vercel): add default request timeout to workflow-server HTTP calls (#1807) Allow disabling step sourcemap with new `sourcemap` option in builders (#1842) [ci] Enable Vercel-prod e2e for tanstack-start (#1904) web: configure vercelPreset() for Vercel deployments (#1815) [core] Combine flow+step bundle and process steps eagerly (#1338) [world-vercel] Revert stream close control framing (#1891) [tarballs] Use turbo to build workspace deps before packing (#1908) # Conflicts: # packages/core/src/runtime/step-handler.test.ts # packages/core/src/runtime/step-handler.ts # packages/core/src/runtime/suspension-handler.ts # packages/core/src/step.test.ts # packages/world-local/src/storage/events-storage.ts # packages/world-postgres/src/drizzle/migrations/meta/_journal.json

VaguelySerious · 2026-05-04T05:13:00Z

Summary

The tarballs Vercel project's vercel.json sets

"buildCommand": "pnpm --filter tarballs build"

which only runs the tarballs package's build script (node scripts/pack.ts) and does not trigger turbo's dependsOn: ["^build"] chain. As a result every preview tarball gets packed with an empty dist/ directory — only bin/, package.json, README.md, and docs/ make it in. Downstream installs then fail with errors like:

Cannot find module '/.../node_modules/workflow/dist/next.cjs'

The old docs-based pipeline did not hit this because Vercel detected docs as a Next.js framework, ran turbo for it (which fans out via ^build), and pack.ts was wired as a prebuild step that ran after workspace deps were already built. Splitting tarballs out of docs in #1893 dropped that side-effect.

The fix is one line: switch the build command to

"buildCommand": "pnpm turbo build --filter=tarballs"

so turbo evaluates the build task for tarballs, fans out via ^build to compile every workspace dependency first, and only then runs tarballs#build (pack.ts) against the populated dist/ directories.

Test plan

pnpm turbo build --filter=tarballs locally — output tarballs contain the full dist/ tree (verified package/dist/next.cjs is present in tarballs/public/workflow.tgz).
Preview deployment for this branch produces tarballs that resolve workflow/next correctly when installed in a downstream Next.js app.
CI checks pass.

🤖 Generated with Claude Code

The standalone tarballs project's vercel.json sets "buildCommand": "pnpm --filter tarballs build", which only runs the tarballs package's build script (node scripts/pack.ts) and does not trigger turbo's `dependsOn: ["^build"]` chain. Every workspace package gets packed with an empty dist/ directory, so downstream installs fail with errors like "Cannot find module '<pkg>/dist/next.cjs'". The previous docs-based pipeline didn't hit this because Vercel detected docs as a Next.js framework, ran turbo for it, and pack.ts was wired as a prebuild step that ran after deps were already built. Switch the buildCommand to `pnpm turbo build --filter=tarballs` so turbo evaluates the build task for tarballs, fans out via ^build to compile every workspace dependency first, and only then runs tarballs#build (pack.ts) against the populated dist/ directories. Verified locally: a fresh build now produces tarballs containing the full dist/ tree (including dist/next.cjs). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

vercel · 2026-05-04T05:13:01Z

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

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	May 4, 2026 5:16am
example-nextjs-workflow-webpack	Ready	Preview, Comment	May 4, 2026 5:16am
example-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-astro-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-express-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-fastify-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-hono-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-nitro-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-nuxt-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-sveltekit-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-tanstack-start-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-vite-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workflow-docs	Ready	Preview, Comment, Open in v0	May 4, 2026 5:16am
workflow-swc-playground	Ready	Preview, Comment	May 4, 2026 5:16am
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changeset-bot · 2026-05-04T05:13:05Z

🦋 Changeset detected

Latest commit: 881c6f9

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

This PR includes changesets to release 0 packages

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

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github-actions · 2026-05-04T05:13:11Z

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Skipped	Total
✅ ▲ Vercel Production	1011	67	1078
✅ 💻 Local Development	1090	86	1176
✅ 📦 Local Production	1090	86	1176
✅ 🐘 Local Postgres	1090	86	1176
✅ 🪟 Windows	98	0	98
✅ 📋 Other	552	36	588
Total	4931	361	5292

Details by Category

✅ ▲ Vercel Production

App	Passed	Skipped
✅ astro	91	7
✅ example	91	7
✅ express	91	7
✅ fastify	91	7
✅ hono	91	7
✅ nextjs-turbopack	96	2
✅ nextjs-webpack	96	2
✅ nitro	91	7
✅ nuxt	91	7
✅ sveltekit	91	7
✅ vite	91	7

✅ 💻 Local Development

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	98	0	0

✅ 📋 Other

App	Passed	Skipped
✅ e2e-local-dev-nest-stable	92	6
✅ e2e-local-dev-tanstack-start-stable	92	6
✅ e2e-local-postgres-nest-stable	92	6
✅ e2e-local-postgres-tanstack-start-stable	92	6
✅ e2e-local-prod-nest-stable	92	6
✅ e2e-local-prod-tanstack-start-stable	92	6

📋 View full workflow run

github-actions · 2026-05-04T05:13:16Z

📊 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	0.041s (-4.4%)	1.006s (~)	0.965s	10	1.00x
💻 Local	Express	0.045s (+1.6%)	1.005s (~)	0.960s	10	1.09x
🐘 Postgres	Nitro	0.058s (-38.8% 🟢)	1.010s (-3.2%)	0.952s	10	1.42x
🐘 Postgres	Express	0.063s (+9.3% 🔺)	1.009s (~)	0.946s	10	1.54x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	0.265s (-35.4% 🟢)	2.640s (+5.2% 🔺)	2.375s	10	1.00x
▲ Vercel	Express	0.292s (+24.0% 🔺)	2.562s (+20.0% 🔺)	2.270s	10	1.10x

🔍 Observability: Nitro | Express

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.129s (~)	2.006s (~)	0.877s	10	1.00x
💻 Local	Express	1.139s (+1.2%)	2.006s (~)	0.867s	10	1.01x
🐘 Postgres	Express	1.139s (-0.6%)	2.008s (~)	0.869s	10	1.01x
🐘 Postgres	Nitro	1.143s (~)	2.010s (~)	0.866s	10	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.923s (-50.6% 🟢)	3.880s (-34.3% 🟢)	1.957s	10	1.00x
▲ Vercel	Express	1.950s (+4.0%)	3.611s (-5.2% 🟢)	1.661s	10	1.01x

🔍 Observability: Nitro | Express

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	10.902s (-0.6%)	11.022s (~)	0.120s	3	1.00x
🐘 Postgres	Nitro	10.924s (~)	11.023s (~)	0.099s	3	1.00x
💻 Local	Nitro	10.938s (~)	11.024s (~)	0.086s	3	1.00x
💻 Local	Express	10.971s (~)	11.358s (+3.0%)	0.388s	3	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	17.794s (-25.0% 🟢)	19.925s (-20.7% 🟢)	2.132s	2	1.00x
▲ Vercel	Express	20.665s (+21.7% 🔺)	22.483s (+12.3% 🔺)	1.818s	2	1.16x

🔍 Observability: Nitro | Express

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	14.543s (~)	15.023s (~)	0.480s	4	1.00x
🐘 Postgres	Nitro	14.614s (~)	15.022s (~)	0.409s	4	1.00x
💻 Local	Nitro	15.052s (~)	15.780s (-1.6%)	0.728s	4	1.04x
💻 Local	Express	15.053s (+0.5%)	15.781s (+5.0%)	0.728s	4	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	34.782s (-46.0% 🟢)	36.761s (-44.8% 🟢)	1.980s	2	1.00x
▲ Vercel	Express	37.878s (-24.7% 🟢)	40.056s (-23.8% 🟢)	2.178s	2	1.09x

🔍 Observability: Nitro | Express

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	13.905s (-0.7%)	14.165s (-2.9%)	0.260s	7	1.00x
🐘 Postgres	Nitro	14.197s (+1.6%)	15.024s (+5.0%)	0.828s	6	1.02x
💻 Local	Nitro	16.877s (+0.6%)	17.198s (+1.0%)	0.321s	6	1.21x
💻 Local	Express	16.948s (+2.1%)	17.030s (~)	0.082s	6	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	54.672s (-54.9% 🟢)	56.262s (-54.5% 🟢)	1.590s	2	1.00x
▲ Vercel	Nitro	57.739s (-86.3% 🟢)	59.801s (-85.9% 🟢)	2.063s	2	1.06x

🔍 Observability: Express | Nitro

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.252s (-1.7%)	2.008s (~)	0.755s	15	1.00x
🐘 Postgres	Express	1.267s (~)	2.009s (~)	0.743s	15	1.01x
💻 Local	Express	1.511s (+1.5%)	2.005s (~)	0.494s	15	1.21x
💻 Local	Nitro	1.530s (-6.2% 🟢)	2.006s (-3.3%)	0.476s	15	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.831s (-1.0%)	4.302s (-7.0% 🟢)	1.470s	7	1.00x
▲ Vercel	Nitro	3.266s (+15.9% 🔺)	4.773s (+10.4% 🔺)	1.507s	7	1.15x

🔍 Observability: Express | Nitro

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.331s (-1.3%)	3.009s (~)	0.678s	10	1.00x
🐘 Postgres	Nitro	2.356s (~)	3.010s (~)	0.654s	10	1.01x
💻 Local	Nitro	3.070s (-2.4%)	3.885s (~)	0.815s	8	1.32x
💻 Local	Express	3.072s (+4.0%)	3.889s (+12.6% 🔺)	0.817s	8	1.32x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.526s (-30.2% 🟢)	4.140s (-19.0% 🟢)	1.614s	8	1.00x
▲ Vercel	Nitro	3.790s (-6.5% 🟢)	5.260s (-11.2% 🟢)	1.470s	6	1.50x

🔍 Observability: Express | Nitro

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	3.473s (~)	4.008s (~)	0.535s	8	1.00x
🐘 Postgres	Express	3.520s (+1.0%)	4.012s (~)	0.492s	8	1.01x
💻 Local	Express	8.370s (~)	9.022s (~)	0.652s	4	2.41x
💻 Local	Nitro	8.495s (+1.7%)	9.026s (~)	0.531s	4	2.45x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.833s (-19.6% 🟢)	4.761s (-14.0% 🟢)	1.928s	7	1.00x
▲ Vercel	Express	3.479s (-18.0% 🟢)	5.061s (-17.4% 🟢)	1.583s	6	1.23x

🔍 Observability: Nitro | Express

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.258s (~)	2.010s (~)	0.751s	15	1.00x
🐘 Postgres	Express	1.281s (+1.9%)	2.008s (~)	0.727s	15	1.02x
💻 Local	Express	1.548s (-18.3% 🟢)	2.007s (-15.1% 🟢)	0.459s	15	1.23x
💻 Local	Nitro	1.569s (-15.9% 🟢)	2.007s (-14.3% 🟢)	0.437s	15	1.25x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.983s (-23.2% 🟢)	3.597s (-17.3% 🟢)	1.614s	9	1.00x
▲ Vercel	Nitro	2.025s (-17.7% 🟢)	3.788s (-9.2% 🟢)	1.763s	8	1.02x

🔍 Observability: Express | Nitro

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.327s (-0.5%)	3.009s (~)	0.682s	10	1.00x
🐘 Postgres	Express	2.331s (~)	3.010s (~)	0.679s	10	1.00x
💻 Local	Nitro	3.050s (~)	3.885s (~)	0.835s	8	1.31x
💻 Local	Express	3.241s (+3.5%)	3.884s (+3.2%)	0.643s	8	1.39x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.370s (-26.7% 🟢)	4.172s (-17.8% 🟢)	1.801s	8	1.00x
▲ Vercel	Express	2.377s (-25.6% 🟢)	3.815s (-20.4% 🟢)	1.439s	8	1.00x

🔍 Observability: Nitro | Express

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.466s (-0.9%)	4.011s (~)	0.545s	8	1.00x
🐘 Postgres	Nitro	3.470s (~)	4.011s (~)	0.541s	8	1.00x
💻 Local	Nitro	9.426s (+3.1%)	9.772s (-2.5%)	0.346s	4	2.72x
💻 Local	Express	9.546s (+8.5% 🔺)	10.021s (+8.1% 🔺)	0.475s	3	2.75x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.719s (-57.6% 🟢)	4.485s (-45.2% 🟢)	1.766s	7	1.00x
▲ Vercel	Nitro	2.729s (-46.4% 🟢)	4.372s (-35.9% 🟢)	1.643s	7	1.00x

🔍 Observability: Express | Nitro

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.828s (+0.9%)	1.006s (~)	0.179s	60	1.00x
🐘 Postgres	Express	0.828s (-1.3%)	1.006s (-1.7%)	0.178s	60	1.00x
💻 Local	Nitro	1.015s (+3.5%)	1.700s (+55.4% 🔺)	0.685s	36	1.23x
💻 Local	Express	1.139s (+15.7% 🔺)	1.584s (+47.3% 🔺)	0.446s	38	1.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	9.922s (-55.0% 🟢)	11.725s (-51.2% 🟢)	1.803s	6	1.00x
▲ Vercel	Express	10.164s (-46.6% 🟢)	11.834s (-44.5% 🟢)	1.671s	6	1.02x

🔍 Observability: Nitro | Express

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.966s (-0.5%)	2.227s (-1.4%)	0.261s	41	1.00x
🐘 Postgres	Nitro	1.999s (+3.7%)	2.494s (+18.7% 🔺)	0.495s	37	1.02x
💻 Local	Nitro	3.118s (+2.7%)	4.010s (+6.7% 🔺)	0.892s	23	1.59x
💻 Local	Express	3.120s (+3.4%)	3.966s (+10.6% 🔺)	0.846s	23	1.59x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	28.179s (-28.6% 🟢)	30.159s (-27.0% 🟢)	1.980s	3	1.00x
▲ Vercel	Express	29.648s (-14.1% 🟢)	31.610s (-14.1% 🟢)	1.962s	3	1.05x

🔍 Observability: Nitro | Express

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	4.042s (-1.5%)	4.566s (-0.8%)	0.524s	27	1.00x
🐘 Postgres	Express	4.045s (+1.4%)	4.703s (+7.6% 🔺)	0.658s	26	1.00x
💻 Local	Express	9.340s (+1.4%)	10.019s (~)	0.678s	12	2.31x
💻 Local	Nitro	9.427s (+1.4%)	10.019s (~)	0.592s	12	2.33x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	85.866s (-34.0% 🟢)	88.100s (-33.3% 🟢)	2.234s	2	1.00x
▲ Vercel	Nitro	86.845s (-10.4% 🟢)	88.977s (-9.6% 🟢)	2.132s	2	1.01x

🔍 Observability: Express | Nitro

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.275s (-3.0%)	1.007s (~)	0.732s	60	1.00x
🐘 Postgres	Express	0.283s (~)	1.007s (~)	0.724s	60	1.03x
💻 Local	Express	0.611s (+9.0% 🔺)	1.005s (~)	0.394s	60	2.22x
💻 Local	Nitro	0.643s (+6.4% 🔺)	1.005s (-1.6%)	0.362s	60	2.34x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.416s (-14.8% 🟢)	3.025s (-9.7% 🟢)	1.610s	20	1.00x
▲ Vercel	Express	1.589s (-18.7% 🟢)	3.252s (-10.6% 🟢)	1.664s	19	1.12x

🔍 Observability: Nitro | Express

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.484s (-2.6%)	1.007s (~)	0.523s	90	1.00x
🐘 Postgres	Express	0.491s (-3.8%)	1.006s (~)	0.516s	90	1.01x
💻 Local	Express	2.545s (+1.3%)	3.009s (~)	0.464s	30	5.26x
💻 Local	Nitro	2.600s (+2.4%)	3.009s (~)	0.409s	30	5.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.744s (-14.9% 🟢)	4.352s (-9.7% 🟢)	1.608s	21	1.00x
▲ Vercel	Express	3.035s (~)	4.735s (-1.5%)	1.700s	20	1.11x

🔍 Observability: Nitro | Express

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.790s (~)	1.007s (~)	0.217s	120	1.00x
🐘 Postgres	Express	0.814s (-0.6%)	1.009s (-0.8%)	0.196s	119	1.03x
💻 Local	Express	11.272s (+0.7%)	11.937s (~)	0.665s	11	14.26x
💻 Local	Nitro	11.480s (+2.6%)	12.028s (+3.1%)	0.548s	10	14.52x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	6.569s (-11.5% 🟢)	8.049s (-12.9% 🟢)	1.481s	15	1.00x
▲ Vercel	Nitro	6.888s (-10.8% 🟢)	8.727s (-7.2% 🟢)	1.839s	14	1.05x

🔍 Observability: Express | Nitro

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.204s (-0.7%)	1.002s (~)	0.001s (-6.7% 🟢)	1.010s (~)	0.806s	10	1.00x
💻 Local	Nitro	0.207s (-3.1%)	1.004s (~)	0.012s (-4.0%)	1.019s (~)	0.812s	10	1.02x
💻 Local	Express	0.209s (+5.0% 🔺)	1.004s (~)	0.012s (+0.8%)	1.019s (~)	0.809s	10	1.03x
🐘 Postgres	Express	0.211s (+3.0%)	0.993s (-0.6%)	0.002s (-6.3% 🟢)	1.009s (~)	0.798s	10	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.468s (-61.7% 🟢)	2.820s (-46.6% 🟢)	1.891s (+154.8% 🔺)	5.170s (-20.3% 🟢)	3.703s	10	1.00x
▲ Vercel	Express	1.540s (-38.5% 🟢)	3.100s (-24.2% 🟢)	1.519s (+58.1% 🔺)	5.100s (-8.8% 🟢)	3.560s	10	1.05x

🔍 Observability: Nitro | Express

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.606s (-2.8%)	1.004s (~)	0.004s (-3.7%)	1.022s (~)	0.415s	59	1.00x
🐘 Postgres	Express	0.635s (+0.8%)	1.005s (~)	0.004s (+6.6% 🔺)	1.023s (~)	0.388s	59	1.05x
💻 Local	Nitro	0.775s (-7.6% 🟢)	1.012s (~)	0.011s (+13.1% 🔺)	1.025s (-8.2% 🟢)	0.249s	59	1.28x
💻 Local	Express	0.861s (+13.7% 🔺)	1.014s (-1.5%)	0.010s (+4.7%)	1.118s (+7.5% 🔺)	0.257s	54	1.42x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	4.106s (-36.9% 🟢)	5.531s (-31.0% 🟢)	0.226s (-44.7% 🟢)	6.155s (-30.3% 🟢)	2.049s	10	1.00x
▲ Vercel	Nitro	4.401s (-85.1% 🟢)	6.039s (-80.4% 🟢)	0.233s (+108.0% 🔺)	6.716s (-78.9% 🟢)	2.315s	10	1.07x

🔍 Observability: Express | Nitro

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.922s (-4.8%)	1.104s (-11.5% 🟢)	0.000s (+77.8% 🔺)	1.132s (-10.0% 🟢)	0.210s	54	1.00x
🐘 Postgres	Express	0.973s (+1.3%)	1.328s (+3.9%)	0.000s (-100.0% 🟢)	1.358s (+3.9%)	0.385s	45	1.06x
💻 Local	Express	1.247s (+1.8%)	2.023s (~)	0.000s (+20.0% 🔺)	2.025s (~)	0.778s	30	1.35x
💻 Local	Nitro	1.266s (+3.6%)	2.023s (~)	0.000s (+100.0% 🔺)	2.025s (~)	0.758s	30	1.37x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.102s (-17.1% 🟢)	4.665s (-8.6% 🟢)	0.000s (-54.2% 🟢)	5.097s (-7.8% 🟢)	1.995s	12	1.00x
▲ Vercel	Nitro	3.496s (+14.6% 🔺)	5.240s (+19.3% 🔺)	0.000s (+18.2% 🔺)	5.691s (+18.3% 🔺)	2.194s	11	1.13x

🔍 Observability: Express | Nitro

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.726s (-3.6%)	2.067s (-3.5%)	0.000s (-100.0% 🟢)	2.094s (-3.7%)	0.367s	29	1.00x
🐘 Postgres	Express	1.769s (~)	2.100s (-3.6%)	0.000s (+Infinity% 🔺)	2.114s (-3.8%)	0.345s	29	1.02x
💻 Local	Express	2.971s (-14.3% 🟢)	3.422s (-15.2% 🟢)	0.000s (-65.3% 🟢)	3.424s (-15.2% 🟢)	0.453s	18	1.72x
💻 Local	Nitro	3.021s (-10.8% 🟢)	3.533s (-12.4% 🟢)	0.000s (-16.7% 🟢)	3.536s (-12.4% 🟢)	0.515s	18	1.75x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.775s (+16.6% 🔺)	6.453s (+20.1% 🔺)	0.000s (-100.0% 🟢)	6.877s (+18.7% 🔺)	2.102s	9	1.00x
▲ Vercel	Express	48.263s (+952.1% 🔺)	49.393s (+720.2% 🔺)	0.000s (+Infinity% 🔺)	49.959s (+673.7% 🔺)	1.696s	7	10.11x

🔍 Observability: Nitro | Express

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	12/21
🐘 Postgres	Nitro	14/21
▲ Vercel	Nitro	12/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	16/21
Nitro	🐘 Postgres	17/21

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

#1908) (#1909)

)

…ovements * origin/main: web: configure vercelPreset() for Vercel deployments (#1815) [core] Combine flow+step bundle and process steps eagerly (#1338) [world-vercel] Revert stream close control framing (#1891) [tarballs] Use turbo to build workspace deps before packing (#1908) # Conflicts: # tarballs/vercel.json

…ignal * origin/main: [core] Skip inline step execution when suspension also has a wait (#1924) [errors] Replace chalk import in @workfow/errors with inline ANSI shim (#1915) Fix compatibility with Zod 4.4.x (#1902) Serialize `run_failed`/`step_failed` errors through serialization pipeline (#1851) tarballs: redesign preview tarballs index page (#1911) Remove extra changeset (#1922) Add stable Next.js eager and lazy test coverage (#1747) Enforce per-(run, correlation) uniqueness for entity-creating events in world-postgres (#1878) fix(world-vercel): add default request timeout to workflow-server HTTP calls (#1807) Allow disabling step sourcemap with new `sourcemap` option in builders (#1842) [ci] Enable Vercel-prod e2e for tanstack-start (#1904) web: configure vercelPreset() for Vercel deployments (#1815) [core] Combine flow+step bundle and process steps eagerly (#1338) [world-vercel] Revert stream close control framing (#1891) [tarballs] Use turbo to build workspace deps before packing (#1908) # Conflicts: # packages/core/src/runtime/step-handler.test.ts # packages/core/src/runtime/step-handler.ts # packages/core/src/runtime/suspension-handler.ts # packages/core/src/step.test.ts # packages/world-local/src/storage/events-storage.ts # packages/world-postgres/src/drizzle/migrations/meta/_journal.json

VaguelySerious · 2026-05-04T05:13:00Z

Summary

The tarballs Vercel project's vercel.json sets

"buildCommand": "pnpm --filter tarballs build"

which only runs the tarballs package's build script (node scripts/pack.ts) and does not trigger turbo's dependsOn: ["^build"] chain. As a result every preview tarball gets packed with an empty dist/ directory — only bin/, package.json, README.md, and docs/ make it in. Downstream installs then fail with errors like:

Cannot find module '/.../node_modules/workflow/dist/next.cjs'

The old docs-based pipeline did not hit this because Vercel detected docs as a Next.js framework, ran turbo for it (which fans out via ^build), and pack.ts was wired as a prebuild step that ran after workspace deps were already built. Splitting tarballs out of docs in #1893 dropped that side-effect.

The fix is one line: switch the build command to

"buildCommand": "pnpm turbo build --filter=tarballs"

so turbo evaluates the build task for tarballs, fans out via ^build to compile every workspace dependency first, and only then runs tarballs#build (pack.ts) against the populated dist/ directories.

Test plan

pnpm turbo build --filter=tarballs locally — output tarballs contain the full dist/ tree (verified package/dist/next.cjs is present in tarballs/public/workflow.tgz).
Preview deployment for this branch produces tarballs that resolve workflow/next correctly when installed in a downstream Next.js app.
CI checks pass.

🤖 Generated with Claude Code

The standalone tarballs project's vercel.json sets "buildCommand": "pnpm --filter tarballs build", which only runs the tarballs package's build script (node scripts/pack.ts) and does not trigger turbo's `dependsOn: ["^build"]` chain. Every workspace package gets packed with an empty dist/ directory, so downstream installs fail with errors like "Cannot find module '<pkg>/dist/next.cjs'". The previous docs-based pipeline didn't hit this because Vercel detected docs as a Next.js framework, ran turbo for it, and pack.ts was wired as a prebuild step that ran after deps were already built. Switch the buildCommand to `pnpm turbo build --filter=tarballs` so turbo evaluates the build task for tarballs, fans out via ^build to compile every workspace dependency first, and only then runs tarballs#build (pack.ts) against the populated dist/ directories. Verified locally: a fresh build now produces tarballs containing the full dist/ tree (including dist/next.cjs). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

vercel · 2026-05-04T05:13:01Z

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

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	May 4, 2026 5:16am
example-nextjs-workflow-webpack	Ready	Preview, Comment	May 4, 2026 5:16am
example-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-astro-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-express-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-fastify-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-hono-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-nitro-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-nuxt-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-sveltekit-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-tanstack-start-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-vite-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workflow-docs	Ready	Preview, Comment, Open in v0	May 4, 2026 5:16am
workflow-swc-playground	Ready	Preview, Comment	May 4, 2026 5:16am
workflow-tarballs	Ready	Preview, Comment	May 4, 2026 5:16am
workflow-web	Ready	Preview, Comment	May 4, 2026 5:16am

changeset-bot · 2026-05-04T05:13:05Z

🦋 Changeset detected

Latest commit: 881c6f9

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

This PR includes changesets to release 0 packages

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

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 · 2026-05-04T05:13:11Z

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Skipped	Total
✅ ▲ Vercel Production	1011	67	1078
✅ 💻 Local Development	1090	86	1176
✅ 📦 Local Production	1090	86	1176
✅ 🐘 Local Postgres	1090	86	1176
✅ 🪟 Windows	98	0	98
✅ 📋 Other	552	36	588
Total	4931	361	5292

Details by Category

✅ ▲ Vercel Production

App	Passed	Skipped
✅ astro	91	7
✅ example	91	7
✅ express	91	7
✅ fastify	91	7
✅ hono	91	7
✅ nextjs-turbopack	96	2
✅ nextjs-webpack	96	2
✅ nitro	91	7
✅ nuxt	91	7
✅ sveltekit	91	7
✅ vite	91	7

✅ 💻 Local Development

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	98	0	0

✅ 📋 Other

App	Passed	Skipped
✅ e2e-local-dev-nest-stable	92	6
✅ e2e-local-dev-tanstack-start-stable	92	6
✅ e2e-local-postgres-nest-stable	92	6
✅ e2e-local-postgres-tanstack-start-stable	92	6
✅ e2e-local-prod-nest-stable	92	6
✅ e2e-local-prod-tanstack-start-stable	92	6

📋 View full workflow run

github-actions · 2026-05-04T05:13:16Z

📊 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	0.041s (-4.4%)	1.006s (~)	0.965s	10	1.00x
💻 Local	Express	0.045s (+1.6%)	1.005s (~)	0.960s	10	1.09x
🐘 Postgres	Nitro	0.058s (-38.8% 🟢)	1.010s (-3.2%)	0.952s	10	1.42x
🐘 Postgres	Express	0.063s (+9.3% 🔺)	1.009s (~)	0.946s	10	1.54x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	0.265s (-35.4% 🟢)	2.640s (+5.2% 🔺)	2.375s	10	1.00x
▲ Vercel	Express	0.292s (+24.0% 🔺)	2.562s (+20.0% 🔺)	2.270s	10	1.10x

🔍 Observability: Nitro | Express

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.129s (~)	2.006s (~)	0.877s	10	1.00x
💻 Local	Express	1.139s (+1.2%)	2.006s (~)	0.867s	10	1.01x
🐘 Postgres	Express	1.139s (-0.6%)	2.008s (~)	0.869s	10	1.01x
🐘 Postgres	Nitro	1.143s (~)	2.010s (~)	0.866s	10	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.923s (-50.6% 🟢)	3.880s (-34.3% 🟢)	1.957s	10	1.00x
▲ Vercel	Express	1.950s (+4.0%)	3.611s (-5.2% 🟢)	1.661s	10	1.01x

🔍 Observability: Nitro | Express

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	10.902s (-0.6%)	11.022s (~)	0.120s	3	1.00x
🐘 Postgres	Nitro	10.924s (~)	11.023s (~)	0.099s	3	1.00x
💻 Local	Nitro	10.938s (~)	11.024s (~)	0.086s	3	1.00x
💻 Local	Express	10.971s (~)	11.358s (+3.0%)	0.388s	3	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	17.794s (-25.0% 🟢)	19.925s (-20.7% 🟢)	2.132s	2	1.00x
▲ Vercel	Express	20.665s (+21.7% 🔺)	22.483s (+12.3% 🔺)	1.818s	2	1.16x

🔍 Observability: Nitro | Express

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	14.543s (~)	15.023s (~)	0.480s	4	1.00x
🐘 Postgres	Nitro	14.614s (~)	15.022s (~)	0.409s	4	1.00x
💻 Local	Nitro	15.052s (~)	15.780s (-1.6%)	0.728s	4	1.04x
💻 Local	Express	15.053s (+0.5%)	15.781s (+5.0%)	0.728s	4	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	34.782s (-46.0% 🟢)	36.761s (-44.8% 🟢)	1.980s	2	1.00x
▲ Vercel	Express	37.878s (-24.7% 🟢)	40.056s (-23.8% 🟢)	2.178s	2	1.09x

🔍 Observability: Nitro | Express

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	13.905s (-0.7%)	14.165s (-2.9%)	0.260s	7	1.00x
🐘 Postgres	Nitro	14.197s (+1.6%)	15.024s (+5.0%)	0.828s	6	1.02x
💻 Local	Nitro	16.877s (+0.6%)	17.198s (+1.0%)	0.321s	6	1.21x
💻 Local	Express	16.948s (+2.1%)	17.030s (~)	0.082s	6	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	54.672s (-54.9% 🟢)	56.262s (-54.5% 🟢)	1.590s	2	1.00x
▲ Vercel	Nitro	57.739s (-86.3% 🟢)	59.801s (-85.9% 🟢)	2.063s	2	1.06x

🔍 Observability: Express | Nitro

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.252s (-1.7%)	2.008s (~)	0.755s	15	1.00x
🐘 Postgres	Express	1.267s (~)	2.009s (~)	0.743s	15	1.01x
💻 Local	Express	1.511s (+1.5%)	2.005s (~)	0.494s	15	1.21x
💻 Local	Nitro	1.530s (-6.2% 🟢)	2.006s (-3.3%)	0.476s	15	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.831s (-1.0%)	4.302s (-7.0% 🟢)	1.470s	7	1.00x
▲ Vercel	Nitro	3.266s (+15.9% 🔺)	4.773s (+10.4% 🔺)	1.507s	7	1.15x

🔍 Observability: Express | Nitro

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.331s (-1.3%)	3.009s (~)	0.678s	10	1.00x
🐘 Postgres	Nitro	2.356s (~)	3.010s (~)	0.654s	10	1.01x
💻 Local	Nitro	3.070s (-2.4%)	3.885s (~)	0.815s	8	1.32x
💻 Local	Express	3.072s (+4.0%)	3.889s (+12.6% 🔺)	0.817s	8	1.32x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.526s (-30.2% 🟢)	4.140s (-19.0% 🟢)	1.614s	8	1.00x
▲ Vercel	Nitro	3.790s (-6.5% 🟢)	5.260s (-11.2% 🟢)	1.470s	6	1.50x

🔍 Observability: Express | Nitro

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	3.473s (~)	4.008s (~)	0.535s	8	1.00x
🐘 Postgres	Express	3.520s (+1.0%)	4.012s (~)	0.492s	8	1.01x
💻 Local	Express	8.370s (~)	9.022s (~)	0.652s	4	2.41x
💻 Local	Nitro	8.495s (+1.7%)	9.026s (~)	0.531s	4	2.45x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.833s (-19.6% 🟢)	4.761s (-14.0% 🟢)	1.928s	7	1.00x
▲ Vercel	Express	3.479s (-18.0% 🟢)	5.061s (-17.4% 🟢)	1.583s	6	1.23x

🔍 Observability: Nitro | Express

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.258s (~)	2.010s (~)	0.751s	15	1.00x
🐘 Postgres	Express	1.281s (+1.9%)	2.008s (~)	0.727s	15	1.02x
💻 Local	Express	1.548s (-18.3% 🟢)	2.007s (-15.1% 🟢)	0.459s	15	1.23x
💻 Local	Nitro	1.569s (-15.9% 🟢)	2.007s (-14.3% 🟢)	0.437s	15	1.25x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.983s (-23.2% 🟢)	3.597s (-17.3% 🟢)	1.614s	9	1.00x
▲ Vercel	Nitro	2.025s (-17.7% 🟢)	3.788s (-9.2% 🟢)	1.763s	8	1.02x

🔍 Observability: Express | Nitro

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.327s (-0.5%)	3.009s (~)	0.682s	10	1.00x
🐘 Postgres	Express	2.331s (~)	3.010s (~)	0.679s	10	1.00x
💻 Local	Nitro	3.050s (~)	3.885s (~)	0.835s	8	1.31x
💻 Local	Express	3.241s (+3.5%)	3.884s (+3.2%)	0.643s	8	1.39x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.370s (-26.7% 🟢)	4.172s (-17.8% 🟢)	1.801s	8	1.00x
▲ Vercel	Express	2.377s (-25.6% 🟢)	3.815s (-20.4% 🟢)	1.439s	8	1.00x

🔍 Observability: Nitro | Express

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.466s (-0.9%)	4.011s (~)	0.545s	8	1.00x
🐘 Postgres	Nitro	3.470s (~)	4.011s (~)	0.541s	8	1.00x
💻 Local	Nitro	9.426s (+3.1%)	9.772s (-2.5%)	0.346s	4	2.72x
💻 Local	Express	9.546s (+8.5% 🔺)	10.021s (+8.1% 🔺)	0.475s	3	2.75x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.719s (-57.6% 🟢)	4.485s (-45.2% 🟢)	1.766s	7	1.00x
▲ Vercel	Nitro	2.729s (-46.4% 🟢)	4.372s (-35.9% 🟢)	1.643s	7	1.00x

🔍 Observability: Express | Nitro

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.828s (+0.9%)	1.006s (~)	0.179s	60	1.00x
🐘 Postgres	Express	0.828s (-1.3%)	1.006s (-1.7%)	0.178s	60	1.00x
💻 Local	Nitro	1.015s (+3.5%)	1.700s (+55.4% 🔺)	0.685s	36	1.23x
💻 Local	Express	1.139s (+15.7% 🔺)	1.584s (+47.3% 🔺)	0.446s	38	1.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	9.922s (-55.0% 🟢)	11.725s (-51.2% 🟢)	1.803s	6	1.00x
▲ Vercel	Express	10.164s (-46.6% 🟢)	11.834s (-44.5% 🟢)	1.671s	6	1.02x

🔍 Observability: Nitro | Express

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.966s (-0.5%)	2.227s (-1.4%)	0.261s	41	1.00x
🐘 Postgres	Nitro	1.999s (+3.7%)	2.494s (+18.7% 🔺)	0.495s	37	1.02x
💻 Local	Nitro	3.118s (+2.7%)	4.010s (+6.7% 🔺)	0.892s	23	1.59x
💻 Local	Express	3.120s (+3.4%)	3.966s (+10.6% 🔺)	0.846s	23	1.59x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	28.179s (-28.6% 🟢)	30.159s (-27.0% 🟢)	1.980s	3	1.00x
▲ Vercel	Express	29.648s (-14.1% 🟢)	31.610s (-14.1% 🟢)	1.962s	3	1.05x

🔍 Observability: Nitro | Express

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	4.042s (-1.5%)	4.566s (-0.8%)	0.524s	27	1.00x
🐘 Postgres	Express	4.045s (+1.4%)	4.703s (+7.6% 🔺)	0.658s	26	1.00x
💻 Local	Express	9.340s (+1.4%)	10.019s (~)	0.678s	12	2.31x
💻 Local	Nitro	9.427s (+1.4%)	10.019s (~)	0.592s	12	2.33x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	85.866s (-34.0% 🟢)	88.100s (-33.3% 🟢)	2.234s	2	1.00x
▲ Vercel	Nitro	86.845s (-10.4% 🟢)	88.977s (-9.6% 🟢)	2.132s	2	1.01x

🔍 Observability: Express | Nitro

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.275s (-3.0%)	1.007s (~)	0.732s	60	1.00x
🐘 Postgres	Express	0.283s (~)	1.007s (~)	0.724s	60	1.03x
💻 Local	Express	0.611s (+9.0% 🔺)	1.005s (~)	0.394s	60	2.22x
💻 Local	Nitro	0.643s (+6.4% 🔺)	1.005s (-1.6%)	0.362s	60	2.34x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.416s (-14.8% 🟢)	3.025s (-9.7% 🟢)	1.610s	20	1.00x
▲ Vercel	Express	1.589s (-18.7% 🟢)	3.252s (-10.6% 🟢)	1.664s	19	1.12x

🔍 Observability: Nitro | Express

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.484s (-2.6%)	1.007s (~)	0.523s	90	1.00x
🐘 Postgres	Express	0.491s (-3.8%)	1.006s (~)	0.516s	90	1.01x
💻 Local	Express	2.545s (+1.3%)	3.009s (~)	0.464s	30	5.26x
💻 Local	Nitro	2.600s (+2.4%)	3.009s (~)	0.409s	30	5.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.744s (-14.9% 🟢)	4.352s (-9.7% 🟢)	1.608s	21	1.00x
▲ Vercel	Express	3.035s (~)	4.735s (-1.5%)	1.700s	20	1.11x

🔍 Observability: Nitro | Express

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.790s (~)	1.007s (~)	0.217s	120	1.00x
🐘 Postgres	Express	0.814s (-0.6%)	1.009s (-0.8%)	0.196s	119	1.03x
💻 Local	Express	11.272s (+0.7%)	11.937s (~)	0.665s	11	14.26x
💻 Local	Nitro	11.480s (+2.6%)	12.028s (+3.1%)	0.548s	10	14.52x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	6.569s (-11.5% 🟢)	8.049s (-12.9% 🟢)	1.481s	15	1.00x
▲ Vercel	Nitro	6.888s (-10.8% 🟢)	8.727s (-7.2% 🟢)	1.839s	14	1.05x

🔍 Observability: Express | Nitro

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.204s (-0.7%)	1.002s (~)	0.001s (-6.7% 🟢)	1.010s (~)	0.806s	10	1.00x
💻 Local	Nitro	0.207s (-3.1%)	1.004s (~)	0.012s (-4.0%)	1.019s (~)	0.812s	10	1.02x
💻 Local	Express	0.209s (+5.0% 🔺)	1.004s (~)	0.012s (+0.8%)	1.019s (~)	0.809s	10	1.03x
🐘 Postgres	Express	0.211s (+3.0%)	0.993s (-0.6%)	0.002s (-6.3% 🟢)	1.009s (~)	0.798s	10	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.468s (-61.7% 🟢)	2.820s (-46.6% 🟢)	1.891s (+154.8% 🔺)	5.170s (-20.3% 🟢)	3.703s	10	1.00x
▲ Vercel	Express	1.540s (-38.5% 🟢)	3.100s (-24.2% 🟢)	1.519s (+58.1% 🔺)	5.100s (-8.8% 🟢)	3.560s	10	1.05x

🔍 Observability: Nitro | Express

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.606s (-2.8%)	1.004s (~)	0.004s (-3.7%)	1.022s (~)	0.415s	59	1.00x
🐘 Postgres	Express	0.635s (+0.8%)	1.005s (~)	0.004s (+6.6% 🔺)	1.023s (~)	0.388s	59	1.05x
💻 Local	Nitro	0.775s (-7.6% 🟢)	1.012s (~)	0.011s (+13.1% 🔺)	1.025s (-8.2% 🟢)	0.249s	59	1.28x
💻 Local	Express	0.861s (+13.7% 🔺)	1.014s (-1.5%)	0.010s (+4.7%)	1.118s (+7.5% 🔺)	0.257s	54	1.42x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	4.106s (-36.9% 🟢)	5.531s (-31.0% 🟢)	0.226s (-44.7% 🟢)	6.155s (-30.3% 🟢)	2.049s	10	1.00x
▲ Vercel	Nitro	4.401s (-85.1% 🟢)	6.039s (-80.4% 🟢)	0.233s (+108.0% 🔺)	6.716s (-78.9% 🟢)	2.315s	10	1.07x

🔍 Observability: Express | Nitro

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.922s (-4.8%)	1.104s (-11.5% 🟢)	0.000s (+77.8% 🔺)	1.132s (-10.0% 🟢)	0.210s	54	1.00x
🐘 Postgres	Express	0.973s (+1.3%)	1.328s (+3.9%)	0.000s (-100.0% 🟢)	1.358s (+3.9%)	0.385s	45	1.06x
💻 Local	Express	1.247s (+1.8%)	2.023s (~)	0.000s (+20.0% 🔺)	2.025s (~)	0.778s	30	1.35x
💻 Local	Nitro	1.266s (+3.6%)	2.023s (~)	0.000s (+100.0% 🔺)	2.025s (~)	0.758s	30	1.37x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.102s (-17.1% 🟢)	4.665s (-8.6% 🟢)	0.000s (-54.2% 🟢)	5.097s (-7.8% 🟢)	1.995s	12	1.00x
▲ Vercel	Nitro	3.496s (+14.6% 🔺)	5.240s (+19.3% 🔺)	0.000s (+18.2% 🔺)	5.691s (+18.3% 🔺)	2.194s	11	1.13x

🔍 Observability: Express | Nitro

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.726s (-3.6%)	2.067s (-3.5%)	0.000s (-100.0% 🟢)	2.094s (-3.7%)	0.367s	29	1.00x
🐘 Postgres	Express	1.769s (~)	2.100s (-3.6%)	0.000s (+Infinity% 🔺)	2.114s (-3.8%)	0.345s	29	1.02x
💻 Local	Express	2.971s (-14.3% 🟢)	3.422s (-15.2% 🟢)	0.000s (-65.3% 🟢)	3.424s (-15.2% 🟢)	0.453s	18	1.72x
💻 Local	Nitro	3.021s (-10.8% 🟢)	3.533s (-12.4% 🟢)	0.000s (-16.7% 🟢)	3.536s (-12.4% 🟢)	0.515s	18	1.75x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.775s (+16.6% 🔺)	6.453s (+20.1% 🔺)	0.000s (-100.0% 🟢)	6.877s (+18.7% 🔺)	2.102s	9	1.00x
▲ Vercel	Express	48.263s (+952.1% 🔺)	49.393s (+720.2% 🔺)	0.000s (+Infinity% 🔺)	49.959s (+673.7% 🔺)	1.696s	7	10.11x

🔍 Observability: Nitro | Express

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	12/21
🐘 Postgres	Nitro	14/21
▲ Vercel	Nitro	12/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	16/21
Nitro	🐘 Postgres	17/21

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

#1908) (#1909)

)

…ovements * origin/main: web: configure vercelPreset() for Vercel deployments (#1815) [core] Combine flow+step bundle and process steps eagerly (#1338) [world-vercel] Revert stream close control framing (#1891) [tarballs] Use turbo to build workspace deps before packing (#1908) # Conflicts: # tarballs/vercel.json

…ignal * origin/main: [core] Skip inline step execution when suspension also has a wait (#1924) [errors] Replace chalk import in @workfow/errors with inline ANSI shim (#1915) Fix compatibility with Zod 4.4.x (#1902) Serialize `run_failed`/`step_failed` errors through serialization pipeline (#1851) tarballs: redesign preview tarballs index page (#1911) Remove extra changeset (#1922) Add stable Next.js eager and lazy test coverage (#1747) Enforce per-(run, correlation) uniqueness for entity-creating events in world-postgres (#1878) fix(world-vercel): add default request timeout to workflow-server HTTP calls (#1807) Allow disabling step sourcemap with new `sourcemap` option in builders (#1842) [ci] Enable Vercel-prod e2e for tanstack-start (#1904) web: configure vercelPreset() for Vercel deployments (#1815) [core] Combine flow+step bundle and process steps eagerly (#1338) [world-vercel] Revert stream close control framing (#1891) [tarballs] Use turbo to build workspace deps before packing (#1908) # Conflicts: # packages/core/src/runtime/step-handler.test.ts # packages/core/src/runtime/step-handler.ts # packages/core/src/runtime/suspension-handler.ts # packages/core/src/step.test.ts # packages/world-local/src/storage/events-storage.ts # packages/world-postgres/src/drizzle/migrations/meta/_journal.json

VaguelySerious · 2026-05-04T05:13:00Z

Summary

The tarballs Vercel project's vercel.json sets

"buildCommand": "pnpm --filter tarballs build"

which only runs the tarballs package's build script (node scripts/pack.ts) and does not trigger turbo's dependsOn: ["^build"] chain. As a result every preview tarball gets packed with an empty dist/ directory — only bin/, package.json, README.md, and docs/ make it in. Downstream installs then fail with errors like:

Cannot find module '/.../node_modules/workflow/dist/next.cjs'

The old docs-based pipeline did not hit this because Vercel detected docs as a Next.js framework, ran turbo for it (which fans out via ^build), and pack.ts was wired as a prebuild step that ran after workspace deps were already built. Splitting tarballs out of docs in #1893 dropped that side-effect.

The fix is one line: switch the build command to

"buildCommand": "pnpm turbo build --filter=tarballs"

so turbo evaluates the build task for tarballs, fans out via ^build to compile every workspace dependency first, and only then runs tarballs#build (pack.ts) against the populated dist/ directories.

Test plan

pnpm turbo build --filter=tarballs locally — output tarballs contain the full dist/ tree (verified package/dist/next.cjs is present in tarballs/public/workflow.tgz).
Preview deployment for this branch produces tarballs that resolve workflow/next correctly when installed in a downstream Next.js app.
CI checks pass.

🤖 Generated with Claude Code

The standalone tarballs project's vercel.json sets "buildCommand": "pnpm --filter tarballs build", which only runs the tarballs package's build script (node scripts/pack.ts) and does not trigger turbo's `dependsOn: ["^build"]` chain. Every workspace package gets packed with an empty dist/ directory, so downstream installs fail with errors like "Cannot find module '<pkg>/dist/next.cjs'". The previous docs-based pipeline didn't hit this because Vercel detected docs as a Next.js framework, ran turbo for it, and pack.ts was wired as a prebuild step that ran after deps were already built. Switch the buildCommand to `pnpm turbo build --filter=tarballs` so turbo evaluates the build task for tarballs, fans out via ^build to compile every workspace dependency first, and only then runs tarballs#build (pack.ts) against the populated dist/ directories. Verified locally: a fresh build now produces tarballs containing the full dist/ tree (including dist/next.cjs). Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

vercel · 2026-05-04T05:13:01Z

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

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	May 4, 2026 5:16am
example-nextjs-workflow-webpack	Ready	Preview, Comment	May 4, 2026 5:16am
example-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-astro-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-express-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-fastify-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-hono-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-nitro-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-nuxt-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-sveltekit-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-tanstack-start-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workbench-vite-workflow	Ready	Preview, Comment	May 4, 2026 5:16am
workflow-docs	Ready	Preview, Comment, Open in v0	May 4, 2026 5:16am
workflow-swc-playground	Ready	Preview, Comment	May 4, 2026 5:16am
workflow-tarballs	Ready	Preview, Comment	May 4, 2026 5:16am
workflow-web	Ready	Preview, Comment	May 4, 2026 5:16am

changeset-bot · 2026-05-04T05:13:05Z

🦋 Changeset detected

Latest commit: 881c6f9

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

This PR includes changesets to release 0 packages

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

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 · 2026-05-04T05:13:11Z

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Skipped	Total
✅ ▲ Vercel Production	1011	67	1078
✅ 💻 Local Development	1090	86	1176
✅ 📦 Local Production	1090	86	1176
✅ 🐘 Local Postgres	1090	86	1176
✅ 🪟 Windows	98	0	98
✅ 📋 Other	552	36	588
Total	4931	361	5292

Details by Category

✅ ▲ Vercel Production

App	Passed	Skipped
✅ astro	91	7
✅ example	91	7
✅ express	91	7
✅ fastify	91	7
✅ hono	91	7
✅ nextjs-turbopack	96	2
✅ nextjs-webpack	96	2
✅ nitro	91	7
✅ nuxt	91	7
✅ sveltekit	91	7
✅ vite	91	7

✅ 💻 Local Development

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	92	6
✅ express-stable	92	6
✅ fastify-stable	92	6
✅ hono-stable	92	6
✅ nextjs-turbopack-canary	79	19
✅ nextjs-turbopack-stable	98	0
✅ nextjs-webpack-canary	79	19
✅ nextjs-webpack-stable	98	0
✅ nitro-stable	92	6
✅ nuxt-stable	92	6
✅ sveltekit-stable	92	6
✅ vite-stable	92	6

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	98	0	0

✅ 📋 Other

App	Passed	Skipped
✅ e2e-local-dev-nest-stable	92	6
✅ e2e-local-dev-tanstack-start-stable	92	6
✅ e2e-local-postgres-nest-stable	92	6
✅ e2e-local-postgres-tanstack-start-stable	92	6
✅ e2e-local-prod-nest-stable	92	6
✅ e2e-local-prod-tanstack-start-stable	92	6

📋 View full workflow run

github-actions · 2026-05-04T05:13:16Z

📊 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	0.041s (-4.4%)	1.006s (~)	0.965s	10	1.00x
💻 Local	Express	0.045s (+1.6%)	1.005s (~)	0.960s	10	1.09x
🐘 Postgres	Nitro	0.058s (-38.8% 🟢)	1.010s (-3.2%)	0.952s	10	1.42x
🐘 Postgres	Express	0.063s (+9.3% 🔺)	1.009s (~)	0.946s	10	1.54x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	0.265s (-35.4% 🟢)	2.640s (+5.2% 🔺)	2.375s	10	1.00x
▲ Vercel	Express	0.292s (+24.0% 🔺)	2.562s (+20.0% 🔺)	2.270s	10	1.10x

🔍 Observability: Nitro | Express

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.129s (~)	2.006s (~)	0.877s	10	1.00x
💻 Local	Express	1.139s (+1.2%)	2.006s (~)	0.867s	10	1.01x
🐘 Postgres	Express	1.139s (-0.6%)	2.008s (~)	0.869s	10	1.01x
🐘 Postgres	Nitro	1.143s (~)	2.010s (~)	0.866s	10	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.923s (-50.6% 🟢)	3.880s (-34.3% 🟢)	1.957s	10	1.00x
▲ Vercel	Express	1.950s (+4.0%)	3.611s (-5.2% 🟢)	1.661s	10	1.01x

🔍 Observability: Nitro | Express

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	10.902s (-0.6%)	11.022s (~)	0.120s	3	1.00x
🐘 Postgres	Nitro	10.924s (~)	11.023s (~)	0.099s	3	1.00x
💻 Local	Nitro	10.938s (~)	11.024s (~)	0.086s	3	1.00x
💻 Local	Express	10.971s (~)	11.358s (+3.0%)	0.388s	3	1.01x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	17.794s (-25.0% 🟢)	19.925s (-20.7% 🟢)	2.132s	2	1.00x
▲ Vercel	Express	20.665s (+21.7% 🔺)	22.483s (+12.3% 🔺)	1.818s	2	1.16x

🔍 Observability: Nitro | Express

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	14.543s (~)	15.023s (~)	0.480s	4	1.00x
🐘 Postgres	Nitro	14.614s (~)	15.022s (~)	0.409s	4	1.00x
💻 Local	Nitro	15.052s (~)	15.780s (-1.6%)	0.728s	4	1.04x
💻 Local	Express	15.053s (+0.5%)	15.781s (+5.0%)	0.728s	4	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	34.782s (-46.0% 🟢)	36.761s (-44.8% 🟢)	1.980s	2	1.00x
▲ Vercel	Express	37.878s (-24.7% 🟢)	40.056s (-23.8% 🟢)	2.178s	2	1.09x

🔍 Observability: Nitro | Express

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	13.905s (-0.7%)	14.165s (-2.9%)	0.260s	7	1.00x
🐘 Postgres	Nitro	14.197s (+1.6%)	15.024s (+5.0%)	0.828s	6	1.02x
💻 Local	Nitro	16.877s (+0.6%)	17.198s (+1.0%)	0.321s	6	1.21x
💻 Local	Express	16.948s (+2.1%)	17.030s (~)	0.082s	6	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	54.672s (-54.9% 🟢)	56.262s (-54.5% 🟢)	1.590s	2	1.00x
▲ Vercel	Nitro	57.739s (-86.3% 🟢)	59.801s (-85.9% 🟢)	2.063s	2	1.06x

🔍 Observability: Express | Nitro

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.252s (-1.7%)	2.008s (~)	0.755s	15	1.00x
🐘 Postgres	Express	1.267s (~)	2.009s (~)	0.743s	15	1.01x
💻 Local	Express	1.511s (+1.5%)	2.005s (~)	0.494s	15	1.21x
💻 Local	Nitro	1.530s (-6.2% 🟢)	2.006s (-3.3%)	0.476s	15	1.22x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.831s (-1.0%)	4.302s (-7.0% 🟢)	1.470s	7	1.00x
▲ Vercel	Nitro	3.266s (+15.9% 🔺)	4.773s (+10.4% 🔺)	1.507s	7	1.15x

🔍 Observability: Express | Nitro

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	2.331s (-1.3%)	3.009s (~)	0.678s	10	1.00x
🐘 Postgres	Nitro	2.356s (~)	3.010s (~)	0.654s	10	1.01x
💻 Local	Nitro	3.070s (-2.4%)	3.885s (~)	0.815s	8	1.32x
💻 Local	Express	3.072s (+4.0%)	3.889s (+12.6% 🔺)	0.817s	8	1.32x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.526s (-30.2% 🟢)	4.140s (-19.0% 🟢)	1.614s	8	1.00x
▲ Vercel	Nitro	3.790s (-6.5% 🟢)	5.260s (-11.2% 🟢)	1.470s	6	1.50x

🔍 Observability: Express | Nitro

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	3.473s (~)	4.008s (~)	0.535s	8	1.00x
🐘 Postgres	Express	3.520s (+1.0%)	4.012s (~)	0.492s	8	1.01x
💻 Local	Express	8.370s (~)	9.022s (~)	0.652s	4	2.41x
💻 Local	Nitro	8.495s (+1.7%)	9.026s (~)	0.531s	4	2.45x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.833s (-19.6% 🟢)	4.761s (-14.0% 🟢)	1.928s	7	1.00x
▲ Vercel	Express	3.479s (-18.0% 🟢)	5.061s (-17.4% 🟢)	1.583s	6	1.23x

🔍 Observability: Nitro | Express

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.258s (~)	2.010s (~)	0.751s	15	1.00x
🐘 Postgres	Express	1.281s (+1.9%)	2.008s (~)	0.727s	15	1.02x
💻 Local	Express	1.548s (-18.3% 🟢)	2.007s (-15.1% 🟢)	0.459s	15	1.23x
💻 Local	Nitro	1.569s (-15.9% 🟢)	2.007s (-14.3% 🟢)	0.437s	15	1.25x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.983s (-23.2% 🟢)	3.597s (-17.3% 🟢)	1.614s	9	1.00x
▲ Vercel	Nitro	2.025s (-17.7% 🟢)	3.788s (-9.2% 🟢)	1.763s	8	1.02x

🔍 Observability: Express | Nitro

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.327s (-0.5%)	3.009s (~)	0.682s	10	1.00x
🐘 Postgres	Express	2.331s (~)	3.010s (~)	0.679s	10	1.00x
💻 Local	Nitro	3.050s (~)	3.885s (~)	0.835s	8	1.31x
💻 Local	Express	3.241s (+3.5%)	3.884s (+3.2%)	0.643s	8	1.39x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.370s (-26.7% 🟢)	4.172s (-17.8% 🟢)	1.801s	8	1.00x
▲ Vercel	Express	2.377s (-25.6% 🟢)	3.815s (-20.4% 🟢)	1.439s	8	1.00x

🔍 Observability: Nitro | Express

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	3.466s (-0.9%)	4.011s (~)	0.545s	8	1.00x
🐘 Postgres	Nitro	3.470s (~)	4.011s (~)	0.541s	8	1.00x
💻 Local	Nitro	9.426s (+3.1%)	9.772s (-2.5%)	0.346s	4	2.72x
💻 Local	Express	9.546s (+8.5% 🔺)	10.021s (+8.1% 🔺)	0.475s	3	2.75x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	2.719s (-57.6% 🟢)	4.485s (-45.2% 🟢)	1.766s	7	1.00x
▲ Vercel	Nitro	2.729s (-46.4% 🟢)	4.372s (-35.9% 🟢)	1.643s	7	1.00x

🔍 Observability: Express | Nitro

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.828s (+0.9%)	1.006s (~)	0.179s	60	1.00x
🐘 Postgres	Express	0.828s (-1.3%)	1.006s (-1.7%)	0.178s	60	1.00x
💻 Local	Nitro	1.015s (+3.5%)	1.700s (+55.4% 🔺)	0.685s	36	1.23x
💻 Local	Express	1.139s (+15.7% 🔺)	1.584s (+47.3% 🔺)	0.446s	38	1.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	9.922s (-55.0% 🟢)	11.725s (-51.2% 🟢)	1.803s	6	1.00x
▲ Vercel	Express	10.164s (-46.6% 🟢)	11.834s (-44.5% 🟢)	1.671s	6	1.02x

🔍 Observability: Nitro | Express

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Express	1.966s (-0.5%)	2.227s (-1.4%)	0.261s	41	1.00x
🐘 Postgres	Nitro	1.999s (+3.7%)	2.494s (+18.7% 🔺)	0.495s	37	1.02x
💻 Local	Nitro	3.118s (+2.7%)	4.010s (+6.7% 🔺)	0.892s	23	1.59x
💻 Local	Express	3.120s (+3.4%)	3.966s (+10.6% 🔺)	0.846s	23	1.59x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	28.179s (-28.6% 🟢)	30.159s (-27.0% 🟢)	1.980s	3	1.00x
▲ Vercel	Express	29.648s (-14.1% 🟢)	31.610s (-14.1% 🟢)	1.962s	3	1.05x

🔍 Observability: Nitro | Express

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	4.042s (-1.5%)	4.566s (-0.8%)	0.524s	27	1.00x
🐘 Postgres	Express	4.045s (+1.4%)	4.703s (+7.6% 🔺)	0.658s	26	1.00x
💻 Local	Express	9.340s (+1.4%)	10.019s (~)	0.678s	12	2.31x
💻 Local	Nitro	9.427s (+1.4%)	10.019s (~)	0.592s	12	2.33x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	85.866s (-34.0% 🟢)	88.100s (-33.3% 🟢)	2.234s	2	1.00x
▲ Vercel	Nitro	86.845s (-10.4% 🟢)	88.977s (-9.6% 🟢)	2.132s	2	1.01x

🔍 Observability: Express | Nitro

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.275s (-3.0%)	1.007s (~)	0.732s	60	1.00x
🐘 Postgres	Express	0.283s (~)	1.007s (~)	0.724s	60	1.03x
💻 Local	Express	0.611s (+9.0% 🔺)	1.005s (~)	0.394s	60	2.22x
💻 Local	Nitro	0.643s (+6.4% 🔺)	1.005s (-1.6%)	0.362s	60	2.34x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.416s (-14.8% 🟢)	3.025s (-9.7% 🟢)	1.610s	20	1.00x
▲ Vercel	Express	1.589s (-18.7% 🟢)	3.252s (-10.6% 🟢)	1.664s	19	1.12x

🔍 Observability: Nitro | Express

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.484s (-2.6%)	1.007s (~)	0.523s	90	1.00x
🐘 Postgres	Express	0.491s (-3.8%)	1.006s (~)	0.516s	90	1.01x
💻 Local	Express	2.545s (+1.3%)	3.009s (~)	0.464s	30	5.26x
💻 Local	Nitro	2.600s (+2.4%)	3.009s (~)	0.409s	30	5.38x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.744s (-14.9% 🟢)	4.352s (-9.7% 🟢)	1.608s	21	1.00x
▲ Vercel	Express	3.035s (~)	4.735s (-1.5%)	1.700s	20	1.11x

🔍 Observability: Nitro | Express

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.790s (~)	1.007s (~)	0.217s	120	1.00x
🐘 Postgres	Express	0.814s (-0.6%)	1.009s (-0.8%)	0.196s	119	1.03x
💻 Local	Express	11.272s (+0.7%)	11.937s (~)	0.665s	11	14.26x
💻 Local	Nitro	11.480s (+2.6%)	12.028s (+3.1%)	0.548s	10	14.52x

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	6.569s (-11.5% 🟢)	8.049s (-12.9% 🟢)	1.481s	15	1.00x
▲ Vercel	Nitro	6.888s (-10.8% 🟢)	8.727s (-7.2% 🟢)	1.839s	14	1.05x

🔍 Observability: Express | Nitro

Stream Benchmarks(includes TTFB metrics)

workflow with stream

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.204s (-0.7%)	1.002s (~)	0.001s (-6.7% 🟢)	1.010s (~)	0.806s	10	1.00x
💻 Local	Nitro	0.207s (-3.1%)	1.004s (~)	0.012s (-4.0%)	1.019s (~)	0.812s	10	1.02x
💻 Local	Express	0.209s (+5.0% 🔺)	1.004s (~)	0.012s (+0.8%)	1.019s (~)	0.809s	10	1.03x
🐘 Postgres	Express	0.211s (+3.0%)	0.993s (-0.6%)	0.002s (-6.3% 🟢)	1.009s (~)	0.798s	10	1.04x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.468s (-61.7% 🟢)	2.820s (-46.6% 🟢)	1.891s (+154.8% 🔺)	5.170s (-20.3% 🟢)	3.703s	10	1.00x
▲ Vercel	Express	1.540s (-38.5% 🟢)	3.100s (-24.2% 🟢)	1.519s (+58.1% 🔺)	5.100s (-8.8% 🟢)	3.560s	10	1.05x

🔍 Observability: Nitro | Express

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.606s (-2.8%)	1.004s (~)	0.004s (-3.7%)	1.022s (~)	0.415s	59	1.00x
🐘 Postgres	Express	0.635s (+0.8%)	1.005s (~)	0.004s (+6.6% 🔺)	1.023s (~)	0.388s	59	1.05x
💻 Local	Nitro	0.775s (-7.6% 🟢)	1.012s (~)	0.011s (+13.1% 🔺)	1.025s (-8.2% 🟢)	0.249s	59	1.28x
💻 Local	Express	0.861s (+13.7% 🔺)	1.014s (-1.5%)	0.010s (+4.7%)	1.118s (+7.5% 🔺)	0.257s	54	1.42x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	4.106s (-36.9% 🟢)	5.531s (-31.0% 🟢)	0.226s (-44.7% 🟢)	6.155s (-30.3% 🟢)	2.049s	10	1.00x
▲ Vercel	Nitro	4.401s (-85.1% 🟢)	6.039s (-80.4% 🟢)	0.233s (+108.0% 🔺)	6.716s (-78.9% 🟢)	2.315s	10	1.07x

🔍 Observability: Express | Nitro

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.922s (-4.8%)	1.104s (-11.5% 🟢)	0.000s (+77.8% 🔺)	1.132s (-10.0% 🟢)	0.210s	54	1.00x
🐘 Postgres	Express	0.973s (+1.3%)	1.328s (+3.9%)	0.000s (-100.0% 🟢)	1.358s (+3.9%)	0.385s	45	1.06x
💻 Local	Express	1.247s (+1.8%)	2.023s (~)	0.000s (+20.0% 🔺)	2.025s (~)	0.778s	30	1.35x
💻 Local	Nitro	1.266s (+3.6%)	2.023s (~)	0.000s (+100.0% 🔺)	2.025s (~)	0.758s	30	1.37x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	3.102s (-17.1% 🟢)	4.665s (-8.6% 🟢)	0.000s (-54.2% 🟢)	5.097s (-7.8% 🟢)	1.995s	12	1.00x
▲ Vercel	Nitro	3.496s (+14.6% 🔺)	5.240s (+19.3% 🔺)	0.000s (+18.2% 🔺)	5.691s (+18.3% 🔺)	2.194s	11	1.13x

🔍 Observability: Express | Nitro

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

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.726s (-3.6%)	2.067s (-3.5%)	0.000s (-100.0% 🟢)	2.094s (-3.7%)	0.367s	29	1.00x
🐘 Postgres	Express	1.769s (~)	2.100s (-3.6%)	0.000s (+Infinity% 🔺)	2.114s (-3.8%)	0.345s	29	1.02x
💻 Local	Express	2.971s (-14.3% 🟢)	3.422s (-15.2% 🟢)	0.000s (-65.3% 🟢)	3.424s (-15.2% 🟢)	0.453s	18	1.72x
💻 Local	Nitro	3.021s (-10.8% 🟢)	3.533s (-12.4% 🟢)	0.000s (-16.7% 🟢)	3.536s (-12.4% 🟢)	0.515s	18	1.75x

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	4.775s (+16.6% 🔺)	6.453s (+20.1% 🔺)	0.000s (-100.0% 🟢)	6.877s (+18.7% 🔺)	2.102s	9	1.00x
▲ Vercel	Express	48.263s (+952.1% 🔺)	49.393s (+720.2% 🔺)	0.000s (+Infinity% 🔺)	49.959s (+673.7% 🔺)	1.696s	7	10.11x

🔍 Observability: Nitro | Express

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Nitro	12/21
🐘 Postgres	Nitro	14/21
▲ Vercel	Nitro	12/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	🐘 Postgres	16/21
Nitro	🐘 Postgres	17/21

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

#1908) (#1909)

)

…ovements * origin/main: web: configure vercelPreset() for Vercel deployments (#1815) [core] Combine flow+step bundle and process steps eagerly (#1338) [world-vercel] Revert stream close control framing (#1891) [tarballs] Use turbo to build workspace deps before packing (#1908) # Conflicts: # tarballs/vercel.json

…ignal * origin/main: [core] Skip inline step execution when suspension also has a wait (#1924) [errors] Replace chalk import in @workfow/errors with inline ANSI shim (#1915) Fix compatibility with Zod 4.4.x (#1902) Serialize `run_failed`/`step_failed` errors through serialization pipeline (#1851) tarballs: redesign preview tarballs index page (#1911) Remove extra changeset (#1922) Add stable Next.js eager and lazy test coverage (#1747) Enforce per-(run, correlation) uniqueness for entity-creating events in world-postgres (#1878) fix(world-vercel): add default request timeout to workflow-server HTTP calls (#1807) Allow disabling step sourcemap with new `sourcemap` option in builders (#1842) [ci] Enable Vercel-prod e2e for tanstack-start (#1904) web: configure vercelPreset() for Vercel deployments (#1815) [core] Combine flow+step bundle and process steps eagerly (#1338) [world-vercel] Revert stream close control framing (#1891) [tarballs] Use turbo to build workspace deps before packing (#1908) # Conflicts: # packages/core/src/runtime/step-handler.test.ts # packages/core/src/runtime/step-handler.ts # packages/core/src/runtime/suspension-handler.ts # packages/core/src/step.test.ts # packages/world-local/src/storage/events-storage.ts # packages/world-postgres/src/drizzle/migrations/meta/_journal.json

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[backport] [tarballs] Build workspace deps before packing (#1908) #1909
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pranaygp approved these changes May 4, 2026
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VaguelySerious added a commit that referenced this pull request May 4, 2026
[backport] [tarballs] Use turbo to build workspace deps before packing (
d7eef0c
#1908) (#1909)

VaguelySerious merged commit ff336a0 into mainMay 4, 2026
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VaguelySerious deleted the peter/fix-tarballs-build branch May 4, 2026 06:12

ziyak97 pushed a commit to ziyak97/workflow that referenced this pull request May 4, 2026
[tarballs] Use turbo to build workspace deps before packing (vercel#1908
c1640b3
)