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Fail fast on incompatible workflow worlds#2659

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nathanc/align-world-runtime-versions
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Fail fast on incompatible workflow worlds#2659
NathanColosimo wants to merge 1 commit into
mainfrom
nathanc/align-world-runtime-versions

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@NathanColosimo

@NathanColosimo NathanColosimo commented Jun 26, 2026

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Summary

  • require configured Worlds to declare the same specVersion as the runtime
  • make World.specVersion required and update its JSDoc for the strict equality contract
  • reject missing, older, and newer world specVersion values before runtime work starts
  • remove the extra test helper churn and keep only explicit valid test worlds

Tests

  • pnpm --filter @workflow/core... build
  • pnpm vitest run src
  • focused affected Vitest files
  • biome check / git diff --check
  • autoreview clean

@changeset-bot

changeset-bot Bot commented Jun 26, 2026

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🦋 Changeset detected

Latest commit: 35f5c4f

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

This PR includes changesets to release 20 packages
Name Type
@workflow/core Patch
@workflow/world Patch
@workflow/builders Patch
@workflow/cli Patch
@workflow/next Patch
@workflow/nitro Patch
@workflow/vitest Patch
@workflow/web-shared Patch
@workflow/web Patch
workflow Patch
@workflow/world-testing Patch
@workflow/world-local Patch
@workflow/world-postgres Patch
@workflow/world-vercel Patch
@workflow/astro Patch
@workflow/nest Patch
@workflow/rollup Patch
@workflow/sveltekit Patch
@workflow/vite Patch
@workflow/nuxt Patch

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

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

@vercel

vercel Bot commented Jun 26, 2026

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

Project Deployment Actions Updated (UTC)
example-nextjs-workflow-turbopack Ready Ready Preview, Comment Jun 26, 2026 10:19pm
example-nextjs-workflow-webpack Ready Ready Preview, Comment Jun 26, 2026 10:19pm
example-workflow Ready Ready Preview, Comment Jun 26, 2026 10:19pm
workbench-astro-workflow Ready Ready Preview, Comment Jun 26, 2026 10:19pm
workbench-express-workflow Ready Ready Preview, Comment Jun 26, 2026 10:19pm
workbench-fastify-workflow Ready Ready Preview, Comment Jun 26, 2026 10:19pm
workbench-hono-workflow Ready Ready Preview, Comment Jun 26, 2026 10:19pm
workbench-nitro-workflow Ready Ready Preview, Comment Jun 26, 2026 10:19pm
workbench-nuxt-workflow Ready Ready Preview, Comment Jun 26, 2026 10:19pm
workbench-sveltekit-workflow Ready Ready Preview, Comment Jun 26, 2026 10:19pm
workbench-tanstack-start-workflow Ready Ready Preview, Comment Jun 26, 2026 10:19pm
workbench-vite-workflow Ready Ready Preview, Comment Jun 26, 2026 10:19pm
workflow-docs Ready Ready Preview, Comment, Open in v0 Jun 26, 2026 10:19pm
workflow-swc-playground Ready Ready Preview, Comment Jun 26, 2026 10:19pm
workflow-tarballs Ready Ready Preview, Comment Jun 26, 2026 10:19pm
workflow-web Ready Ready Preview, Comment Jun 26, 2026 10:19pm

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🧪 E2E Test Results

All tests passed

Summary

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

Details by Category

✅ ▲ Vercel Production
App Passed Failed Skipped
✅ astro 125 0 27
✅ example 125 0 27
✅ express 125 0 27
✅ fastify 125 0 27
✅ hono 125 0 27
✅ nextjs-turbopack 149 0 3
✅ nextjs-webpack 149 0 3
✅ nitro 125 0 27
✅ nuxt 125 0 27
✅ sveltekit 144 0 8
✅ vite 125 0 27
✅ 💻 Local Development
App Passed Failed Skipped
✅ astro-stable 127 0 25
✅ express-stable 127 0 25
✅ fastify-stable 127 0 25
✅ hono-stable 127 0 25
✅ nextjs-turbopack-canary 133 0 19
✅ nextjs-turbopack-stable 152 0 0
✅ nextjs-webpack-canary 133 0 19
✅ nextjs-webpack-stable 152 0 0
✅ nitro-stable 127 0 25
✅ nuxt-stable 127 0 25
✅ sveltekit-stable 146 0 6
✅ vite-stable 127 0 25
✅ 📦 Local Production
App Passed Failed Skipped
✅ astro-stable 127 0 25
✅ express-stable 127 0 25
✅ fastify-stable 127 0 25
✅ hono-stable 127 0 25
✅ nextjs-turbopack-canary 133 0 19
✅ nextjs-turbopack-stable 152 0 0
✅ nextjs-webpack-canary 133 0 19
✅ nextjs-webpack-stable 152 0 0
✅ nitro-stable 127 0 25
✅ nuxt-stable 127 0 25
✅ sveltekit-stable 146 0 6
✅ vite-stable 127 0 25
✅ 🐘 Local Postgres
App Passed Failed Skipped
✅ astro-stable 126 0 26
✅ express-stable 126 0 26
✅ fastify-stable 126 0 26
✅ hono-stable 126 0 26
✅ nextjs-turbopack-canary 132 0 20
✅ nextjs-turbopack-stable 151 0 1
✅ nextjs-webpack-canary 132 0 20
✅ nextjs-webpack-stable 151 0 1
✅ nitro-stable 126 0 26
✅ nuxt-stable 126 0 26
✅ sveltekit-stable 145 0 7
✅ vite-stable 126 0 26
✅ 🪟 Windows
App Passed Failed Skipped
✅ nextjs-turbopack 152 0 0
✅ 📋 Other
App Passed Failed Skipped
✅ e2e-local-dev-nest-stable 127 0 25
✅ e2e-local-dev-tanstack-start- 127 0 25
✅ e2e-local-postgres-nest-stable 126 0 26
✅ e2e-local-postgres-tanstack-start- 126 0 26
✅ e2e-local-prod-nest-stable 127 0 25
✅ e2e-local-prod-tanstack-start- 127 0 25
✅ e2e-vercel-prod-tanstack-start 125 0 27

📋 View full workflow run

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📊 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 0.047s (+34.3% 🔺) 1.007s (~) 0.960s 10 1.00x
💻 Local Express 0.049s (-1.4%) 1.006s (~) 0.958s 10 1.03x
💻 Local Next.js (Turbopack) 0.051s (+1.0%) 1.006s (~) 0.955s 10 1.08x
🐘 Postgres Next.js (Turbopack) 0.058s (-50.8% 🟢) 1.012s (-3.9%) 0.954s 10 1.23x
🐘 Postgres Nitro 0.068s (-4.2%) 1.013s (~) 0.945s 10 1.44x
🐘 Postgres Express 0.070s (+11.9% 🔺) 1.012s (~) 0.941s 10 1.50x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 0.272s (+29.5% 🔺) 2.060s (+37.8% 🔺) 1.788s 10 1.00x
▲ Vercel Nitro 0.283s (+43.2% 🔺) 2.143s (+25.5% 🔺) 1.860s 10 1.04x
▲ Vercel Next.js (Turbopack) 0.509s (-7.2% 🟢) 2.349s (+15.5% 🔺) 1.840s 10 1.87x

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

workflow with 1 step

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
💻 Local 🥇 Nitro 1.081s (+1.4%) 2.006s (~) 0.925s 10 1.00x
💻 Local Express 1.087s (+0.5%) 2.006s (~) 0.919s 10 1.01x
💻 Local Next.js (Turbopack) 1.089s (+0.5%) 2.006s (~) 0.918s 10 1.01x
🐘 Postgres Nitro 1.097s (~) 2.011s (~) 0.914s 10 1.01x
🐘 Postgres Express 1.100s (~) 2.011s (~) 0.911s 10 1.02x
🐘 Postgres Next.js (Turbopack) 1.102s (+1.8%) 2.009s (-0.5%) 0.907s 10 1.02x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 1.540s (+11.5% 🔺) 3.307s (+6.4% 🔺) 1.767s 10 1.00x
▲ Vercel Express 1.607s (+14.3% 🔺) 3.266s (+15.3% 🔺) 1.659s 10 1.04x
▲ Vercel Next.js (Turbopack) 2.473s (+15.1% 🔺) 4.203s (+18.4% 🔺) 1.730s 10 1.61x

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

workflow with 10 sequential steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
💻 Local 🥇 Nitro 10.458s (~) 11.022s (~) 0.564s 3 1.00x
💻 Local Express 10.463s (~) 11.024s (~) 0.561s 3 1.00x
🐘 Postgres Express 10.466s (~) 11.012s (~) 0.546s 3 1.00x
🐘 Postgres Next.js (Turbopack) 10.490s (-2.1%) 11.015s (~) 0.525s 3 1.00x
💻 Local Next.js (Turbopack) 10.508s (~) 11.023s (~) 0.515s 3 1.00x
🐘 Postgres Nitro 10.522s (~) 11.016s (~) 0.494s 3 1.01x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 11.833s (~) 14.059s (+6.0% 🔺) 2.226s 3 1.00x
▲ Vercel Express 12.104s (+2.9%) 13.737s (-1.1%) 1.632s 3 1.02x
▲ Vercel Next.js (Turbopack) 13.482s (+6.6% 🔺) 15.118s (+9.0% 🔺) 1.636s 3 1.14x

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

workflow with 25 sequential steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
💻 Local 🥇 Nitro 13.642s (+1.1%) 14.028s (~) 0.386s 5 1.00x
🐘 Postgres Nitro 13.645s (-0.6%) 14.018s (~) 0.373s 5 1.00x
💻 Local Express 13.659s (~) 14.028s (~) 0.370s 5 1.00x
🐘 Postgres Express 13.706s (~) 14.020s (~) 0.314s 5 1.00x
💻 Local Next.js (Turbopack) 13.807s (+0.7%) 14.026s (~) 0.219s 5 1.01x
🐘 Postgres Next.js (Turbopack) 13.817s (+1.2%) 14.017s (~) 0.200s 5 1.01x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 17.238s (+1.0%) 19.252s (+1.7%) 2.014s 4 1.00x
▲ Vercel Nitro 18.060s (-2.9%) 20.291s (-1.4%) 2.231s 3 1.05x
▲ Vercel Next.js (Turbopack) 18.526s (+1.4%) 19.945s (-1.3%) 1.419s 4 1.07x

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

workflow with 50 sequential steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Nitro 12.177s (-0.9%) 13.019s (~) 0.842s 7 1.00x
💻 Local Nitro 12.198s (+3.4%) 13.025s (+8.3% 🔺) 0.827s 7 1.00x
💻 Local Express 12.224s (-1.0%) 13.026s (~) 0.802s 7 1.00x
💻 Local Next.js (Turbopack) 12.245s (-1.0%) 13.025s (~) 0.780s 7 1.01x
🐘 Postgres Express 12.269s (+1.3%) 13.022s (+1.2%) 0.753s 7 1.01x
🐘 Postgres Next.js (Turbopack) 12.278s (-0.8%) 13.016s (~) 0.738s 7 1.01x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 20.469s (+13.3% 🔺) 21.884s (+8.3% 🔺) 1.415s 5 1.00x
▲ Vercel Nitro 21.113s (+18.4% 🔺) 23.227s (+19.1% 🔺) 2.114s 4 1.03x
▲ Vercel Next.js (Turbopack) 23.248s (+18.5% 🔺) 24.890s (+18.5% 🔺) 1.642s 4 1.14x

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

Promise.all with 10 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Nitro 1.173s (-2.4%) 2.007s (~) 0.834s 15 1.00x
🐘 Postgres Express 1.177s (~) 2.007s (~) 0.831s 15 1.00x
🐘 Postgres Next.js (Turbopack) 1.185s (-12.7% 🟢) 2.008s (-1.2%) 0.823s 15 1.01x
💻 Local Next.js (Turbopack) 1.435s (+2.4%) 2.006s (~) 0.571s 15 1.22x
💻 Local Express 1.469s (+3.4%) 2.007s (~) 0.538s 15 1.25x
💻 Local Nitro 1.472s (+13.7% 🔺) 2.007s (~) 0.534s 15 1.26x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 2.320s (+21.3% 🔺) 3.580s (-5.8% 🟢) 1.261s 9 1.00x
▲ Vercel Nitro 2.960s (+34.8% 🔺) 4.802s (+32.2% 🔺) 1.842s 7 1.28x
▲ Vercel Next.js (Turbopack) 3.912s (+16.2% 🔺) 5.443s (+13.2% 🔺) 1.531s 6 1.69x

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

Promise.all with 25 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 1.294s (~) 2.393s (-7.7% 🟢) 1.099s 13 1.00x
🐘 Postgres Next.js (Turbopack) 1.314s (-6.4% 🟢) 3.008s (~) 1.694s 10 1.02x
🐘 Postgres Nitro 1.334s (-2.2%) 2.510s (~) 1.176s 12 1.03x
💻 Local Express 2.297s (-16.9% 🟢) 3.110s (+3.3%) 0.813s 10 1.77x
💻 Local Nitro 2.518s (+4.4%) 3.209s (+6.4% 🔺) 0.691s 10 1.95x
💻 Local Next.js (Turbopack) 2.763s (+6.0% 🔺) 3.109s (+3.3%) 0.346s 10 2.14x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 2.766s (+10.3% 🔺) 4.682s (+27.2% 🔺) 1.916s 7 1.00x
▲ Vercel Express 3.144s (+13.2% 🔺) 4.530s (+1.1%) 1.385s 7 1.14x
▲ Vercel Next.js (Turbopack) 4.161s (+18.7% 🔺) 5.933s (+26.9% 🔺) 1.772s 6 1.50x

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

Promise.all with 50 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 1.637s (+3.4%) 4.012s (-3.0%) 2.375s 8 1.00x
🐘 Postgres Nitro 1.657s (~) 4.141s (-3.7%) 2.484s 8 1.01x
🐘 Postgres Next.js (Turbopack) 2.853s (~) 5.849s (+9.4% 🔺) 2.997s 6 1.74x
💻 Local Nitro 6.405s (+17.3% 🔺) 7.216s (+19.9% 🔺) 0.811s 5 3.91x
💻 Local Express 7.304s (+16.0% 🔺) 8.017s (+17.6% 🔺) 0.713s 4 4.46x
💻 Local Next.js (Turbopack) 7.924s (+6.9% 🔺) 8.770s (+3.0%) 0.846s 4 4.84x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 3.263s (+15.6% 🔺) 5.162s (+9.0% 🔺) 1.899s 6 1.00x
▲ Vercel Express 3.865s (+25.2% 🔺) 5.462s (+14.7% 🔺) 1.597s 6 1.18x
▲ Vercel Next.js (Turbopack) 6.057s (+19.6% 🔺) 7.590s (+16.7% 🔺) 1.533s 4 1.86x

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

Promise.race with 10 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Nitro 1.183s (-1.1%) 2.007s (~) 0.824s 15 1.00x
🐘 Postgres Next.js (Turbopack) 1.187s (-8.5% 🟢) 2.008s (-1.0%) 0.821s 15 1.00x
🐘 Postgres Express 1.189s (-18.8% 🟢) 2.007s (-9.7% 🟢) 0.818s 15 1.01x
💻 Local Express 1.395s (-3.3%) 2.007s (~) 0.612s 15 1.18x
💻 Local Next.js (Turbopack) 1.415s (-12.8% 🟢) 2.007s (-3.2%) 0.592s 15 1.20x
💻 Local Nitro 1.444s (+21.9% 🔺) 2.007s (~) 0.563s 15 1.22x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 2.517s (+24.6% 🔺) 3.959s (+2.5%) 1.442s 8 1.00x
▲ Vercel Nitro 2.837s (+39.7% 🔺) 4.625s (+34.3% 🔺) 1.788s 7 1.13x
▲ Vercel Next.js (Turbopack) 3.485s (+16.6% 🔺) 4.749s (+5.7% 🔺) 1.264s 7 1.38x

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

Promise.race with 25 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 1.297s (-2.2%) 2.223s (-4.1%) 0.925s 14 1.00x
🐘 Postgres Next.js (Turbopack) 1.299s (-8.2% 🟢) 3.009s (+8.2% 🔺) 1.709s 10 1.00x
🐘 Postgres Nitro 1.345s (+2.2%) 2.316s (-7.7% 🟢) 0.972s 13 1.04x
💻 Local Express 2.344s (-12.0% 🟢) 3.009s (+3.1%) 0.665s 10 1.81x
💻 Local Nitro 2.386s (~) 3.009s (~) 0.623s 10 1.84x
💻 Local Next.js (Turbopack) 2.600s (+7.1% 🔺) 3.109s (~) 0.509s 10 2.00x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 2.713s (+24.7% 🔺) 4.216s (+9.8% 🔺) 1.503s 8 1.00x
▲ Vercel Nitro 3.032s (+28.7% 🔺) 4.707s (+29.5% 🔺) 1.676s 7 1.12x
▲ Vercel Next.js (Turbopack) 4.244s (+21.4% 🔺) 5.787s (+18.5% 🔺) 1.542s 6 1.56x

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

Promise.race with 50 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Nitro 1.615s (-3.1%) 4.439s (+3.1%) 2.824s 7 1.00x
🐘 Postgres Express 1.632s (+3.2%) 4.137s (~) 2.505s 8 1.01x
🐘 Postgres Next.js (Turbopack) 3.338s (+21.6% 🔺) 5.848s (+12.0% 🔺) 2.510s 6 2.07x
💻 Local Next.js (Turbopack) 5.967s (-22.4% 🟢) 6.614s (-24.6% 🟢) 0.647s 5 3.69x
💻 Local Express 6.577s (+7.1% 🔺) 7.216s (+5.8% 🔺) 0.638s 5 4.07x
💻 Local Nitro 6.773s (+24.7% 🔺) 7.215s (+12.4% 🔺) 0.442s 5 4.19x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 3.311s (+18.5% 🔺) 5.213s (+10.5% 🔺) 1.902s 6 1.00x
▲ Vercel Express 3.416s (+18.1% 🔺) 4.922s (+1.7%) 1.506s 7 1.03x
▲ Vercel Next.js (Turbopack) 4.575s (+15.5% 🔺) 6.275s (+14.5% 🔺) 1.700s 5 1.38x

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

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 0.541s (-13.4% 🟢) 1.006s (-6.3% 🟢) 0.466s 60 1.00x
🐘 Postgres Nitro 0.568s (-1.3%) 1.023s (~) 0.456s 59 1.05x
🐘 Postgres Express 0.575s (+12.0% 🔺) 1.024s (+1.7%) 0.449s 59 1.06x
💻 Local Nitro 0.584s (+31.0% 🔺) 1.005s (~) 0.421s 60 1.08x
💻 Local Next.js (Turbopack) 0.604s (-8.0% 🟢) 1.005s (-1.6%) 0.401s 60 1.12x
💻 Local Express 0.606s (+6.2% 🔺) 1.005s (~) 0.399s 60 1.12x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 3.567s (+39.0% 🔺) 5.098s (+26.8% 🔺) 1.530s 12 1.00x
▲ Vercel Nitro 3.707s (+33.4% 🔺) 5.656s (+19.3% 🔺) 1.949s 11 1.04x
▲ Vercel Next.js (Turbopack) 5.183s (+35.0% 🔺) 6.841s (+26.2% 🔺) 1.659s 9 1.45x

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

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Nitro 1.331s (-4.0%) 2.030s (+1.1%) 0.698s 45 1.00x
🐘 Postgres Next.js (Turbopack) 1.335s (-22.3% 🟢) 2.007s (-13.8% 🟢) 0.672s 45 1.00x
🐘 Postgres Express 1.390s (+10.5% 🔺) 2.053s (+1.1%) 0.663s 44 1.04x
💻 Local Nitro 1.494s (+44.2% 🔺) 2.007s (+38.3% 🔺) 0.513s 45 1.12x
💻 Local Express 1.522s (+8.9% 🔺) 2.028s (+1.1%) 0.506s 45 1.14x
💻 Local Next.js (Turbopack) 1.538s (+0.9%) 2.029s (+1.1%) 0.491s 45 1.16x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 9.046s (+31.0% 🔺) 10.885s (+24.6% 🔺) 1.839s 9 1.00x
▲ Vercel Nitro 9.434s (+54.1% 🔺) 11.665s (+56.8% 🔺) 2.231s 8 1.04x
▲ Vercel Next.js (Turbopack) 10.090s (+18.7% 🔺) 11.910s (+16.3% 🔺) 1.820s 8 1.12x

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

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Nitro 2.530s (-12.6% 🟢) 3.008s (-7.5% 🟢) 0.479s 40 1.00x
🐘 Postgres Next.js (Turbopack) 2.660s (-13.9% 🟢) 3.034s (-15.8% 🟢) 0.374s 40 1.05x
🐘 Postgres Express 2.690s (+12.6% 🔺) 3.086s (+1.7%) 0.396s 39 1.06x
💻 Local Nitro 3.162s (+42.6% 🔺) 3.945s (+39.7% 🔺) 0.782s 31 1.25x
💻 Local Next.js (Turbopack) 3.308s (-0.9%) 4.009s (~) 0.701s 30 1.31x
💻 Local Express 3.315s (+8.9% 🔺) 4.010s (+11.5% 🔺) 0.695s 30 1.31x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 16.843s (+25.9% 🔺) 19.116s (+27.0% 🔺) 2.273s 7 1.00x
▲ Vercel Express 16.926s (+28.6% 🔺) 18.637s (+19.1% 🔺) 1.711s 7 1.00x
▲ Vercel Next.js (Turbopack) 22.283s (+15.8% 🔺) 23.884s (+15.2% 🔺) 1.601s 6 1.32x

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

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 0.174s (-32.5% 🟢) 1.006s (-0.9%) 0.832s 60 1.00x
🐘 Postgres Nitro 0.205s (-10.4% 🟢) 1.006s (~) 0.801s 60 1.18x
🐘 Postgres Express 0.223s (+9.9% 🔺) 1.007s (~) 0.784s 60 1.28x
💻 Local Express 0.446s (-4.3%) 1.004s (~) 0.558s 60 2.56x
💻 Local Nitro 0.474s (+25.9% 🔺) 1.005s (~) 0.531s 60 2.71x
💻 Local Next.js (Turbopack) 0.652s (+5.6% 🔺) 1.039s (+3.4%) 0.387s 58 3.74x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 1.437s (+33.5% 🔺) 3.449s (+39.8% 🔺) 2.012s 18 1.00x
▲ Vercel Express 1.461s (+44.9% 🔺) 3.013s (+12.6% 🔺) 1.553s 20 1.02x
▲ Vercel Next.js (Turbopack) 2.607s (+27.8% 🔺) 4.050s (+21.2% 🔺) 1.443s 16 1.81x

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

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 0.281s (-47.5% 🟢) 1.006s (-11.2% 🟢) 0.725s 90 1.00x
🐘 Postgres Nitro 0.328s (-7.7% 🟢) 1.018s (+1.1%) 0.690s 89 1.17x
🐘 Postgres Express 0.339s (+10.5% 🔺) 1.006s (~) 0.667s 90 1.21x
💻 Local Nitro 2.172s (+46.1% 🔺) 2.821s (+37.4% 🔺) 0.649s 32 7.72x
💻 Local Express 2.330s (+2.5%) 2.945s (+3.2%) 0.615s 31 8.29x
💻 Local Next.js (Turbopack) 2.783s (~) 3.224s (-3.5%) 0.441s 28 9.90x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 1.884s (+28.1% 🔺) 3.534s (+9.9% 🔺) 1.651s 26 1.00x
▲ Vercel Nitro 2.485s (+90.7% 🔺) 4.256s (+59.2% 🔺) 1.771s 22 1.32x
▲ Vercel Next.js (Turbopack) 3.617s (+42.1% 🔺) 5.371s (+42.8% 🔺) 1.754s 17 1.92x

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

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 0.514s (-41.4% 🟢) 2.960s (+17.1% 🔺) 2.447s 41 1.00x
🐘 Postgres Nitro 0.520s (-6.3% 🟢) 1.068s (-3.6%) 0.548s 115 1.01x
🐘 Postgres Express 0.542s (+5.0%) 1.108s (+5.5% 🔺) 0.565s 109 1.06x
💻 Local Next.js (Turbopack) 10.155s (-4.9%) 11.118s (-4.7%) 0.963s 11 19.77x
💻 Local Nitro 10.189s (+37.0% 🔺) 11.211s (+35.3% 🔺) 1.023s 11 19.84x
💻 Local Express 10.206s (+8.7% 🔺) 11.026s (+3.9%) 0.820s 11 19.87x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 2.556s (+28.5% 🔺) 4.252s (+8.4% 🔺) 1.695s 29 1.00x
▲ Vercel Nitro 2.803s (+54.0% 🔺) 4.730s (+30.6% 🔺) 1.927s 26 1.10x
▲ Vercel Next.js (Turbopack) 4.774s (+27.4% 🔺) 6.674s (+27.9% 🔺) 1.900s 18 1.87x

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

Stream Benchmarks (includes TTFB metrics)
workflow with stream

💻 Local Development

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
💻 Local 🥇 Next.js (Turbopack) 1.142s (~) 1.967s (~) 0.013s (+23.8% 🔺) 2.020s (~) 0.878s 10 1.00x
💻 Local Nitro 1.157s (+4.1%) 2.004s (~) 0.013s (-61.6% 🟢) 2.020s (-1.1%) 0.863s 10 1.01x
🐘 Postgres Express 1.159s (~) 1.999s (~) 0.001s (+55.6% 🔺) 2.010s (~) 0.852s 10 1.01x
🐘 Postgres Nitro 1.160s (-1.4%) 1.998s (~) 0.001s (~) 2.011s (~) 0.851s 10 1.02x
🐘 Postgres Next.js (Turbopack) 1.164s (-10.7% 🟢) 2.000s (~) 0.001s (-91.6% 🟢) 2.011s (-1.4%) 0.847s 10 1.02x
💻 Local Express 1.167s (+1.6%) 2.005s (~) 0.013s (+15.5% 🔺) 2.021s (~) 0.854s 10 1.02x

▲ Production (Vercel)

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 2.258s (+16.4% 🔺) 3.322s (-1.7%) 3.546s (+134.6% 🔺) 7.328s (+36.1% 🔺) 5.070s 10 1.00x
▲ Vercel Nitro 2.267s (+18.8% 🔺) 3.561s (+16.4% 🔺) 2.346s (+55.9% 🔺) 6.508s (+29.4% 🔺) 4.241s 10 1.00x
▲ Vercel Next.js (Turbopack) 4.341s (+29.8% 🔺) 4.292s (+17.8% 🔺) 2.201s (+58.4% 🔺) 8.213s (+29.4% 🔺) 3.872s 10 1.92x

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

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
💻 Local 🥇 Nitro 1.558s (+10.4% 🔺) 2.010s (~) 0.013s (-32.1% 🟢) 2.026s (~) 0.468s 30 1.00x
💻 Local Express 1.558s (~) 2.010s (~) 0.013s (-11.6% 🟢) 2.026s (~) 0.468s 30 1.00x
🐘 Postgres Nitro 1.581s (-3.2%) 2.006s (~) 0.005s (+2.5%) 2.026s (~) 0.445s 30 1.02x
🐘 Postgres Next.js (Turbopack) 1.593s (-19.2% 🟢) 2.011s (-16.0% 🟢) 0.005s (+19.6% 🔺) 2.027s (-16.2% 🟢) 0.433s 30 1.02x
🐘 Postgres Express 1.604s (+4.1%) 2.004s (~) 0.005s (-6.8% 🟢) 2.026s (~) 0.422s 30 1.03x
💻 Local Next.js (Turbopack) 1.610s (~) 1.969s (~) 0.013s (-1.3%) 2.026s (~) 0.416s 30 1.03x

▲ Production (Vercel)

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 6.168s (+7.2% 🔺) 7.489s (+1.8%) 0.334s (+31.2% 🔺) 8.424s (+3.8%) 2.256s 8 1.00x
▲ Vercel Nitro 6.912s (+23.8% 🔺) 8.500s (+26.8% 🔺) 0.190s (-13.0% 🟢) 9.333s (+26.0% 🔺) 2.421s 7 1.12x
▲ Vercel Next.js (Turbopack) 10.843s (+16.6% 🔺) 11.869s (+17.8% 🔺) 0.260s (-2.5%) 12.947s (+15.1% 🔺) 2.104s 5 1.76x

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

10 parallel streams (1MB each)

💻 Local Development

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 0.767s (+3.9%) 1.045s (+1.6%) 0.000s (+Infinity% 🔺) 1.072s (+1.7%) 0.306s 57 1.00x
🐘 Postgres Nitro 0.802s (-3.6%) 1.064s (-3.4%) 0.000s (-3.6%) 1.079s (-3.6%) 0.277s 56 1.05x
🐘 Postgres Next.js (Turbopack) 0.966s (-11.6% 🟢) 1.331s (-19.8% 🟢) 0.000s (+Infinity% 🔺) 1.357s (-19.3% 🟢) 0.391s 45 1.26x
💻 Local Nitro 1.238s (+29.6% 🔺) 1.981s (+50.7% 🔺) 0.000s (-50.5% 🟢) 1.984s (+50.5% 🔺) 0.745s 31 1.62x
💻 Local Express 1.306s (-2.0%) 2.014s (~) 0.000s (-69.6% 🟢) 2.016s (~) 0.710s 30 1.70x
💻 Local Next.js (Turbopack) 1.410s (-3.3%) 1.978s (~) 0.000s (+233.3% 🔺) 2.016s (~) 0.606s 30 1.84x

▲ Production (Vercel)

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 3.282s (+15.3% 🔺) 4.608s (+3.2%) 0.000s (+8.3% 🔺) 5.098s (+2.3%) 1.816s 12 1.00x
▲ Vercel Nitro 3.772s (+35.4% 🔺) 5.298s (+27.0% 🔺) 0.000s (NaN%) 5.934s (+27.9% 🔺) 2.162s 11 1.15x
▲ Vercel Next.js (Turbopack) 5.070s (+3.8%) 5.817s (+8.1% 🔺) 0.001s (+1011.1% 🔺) 6.731s (+5.3% 🔺) 1.661s 9 1.54x

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

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

💻 Local Development

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Nitro 1.692s (-2.8%) 2.327s (~) 0.000s (-100.0% 🟢) 2.347s (~) 0.655s 27 1.00x
🐘 Postgres Express 1.771s (+7.6% 🔺) 2.392s (+6.2% 🔺) 0.000s (+8.0% 🔺) 2.435s (+7.0% 🔺) 0.664s 25 1.05x
🐘 Postgres Next.js (Turbopack) 2.481s (-26.5% 🟢) 3.103s (-20.0% 🟢) 0.000s (+Infinity% 🔺) 3.110s (-20.7% 🟢) 0.629s 20 1.47x
💻 Local Nitro 3.456s (+58.3% 🔺) 4.094s (+57.1% 🔺) 0.001s (-20.0% 🟢) 4.097s (+56.9% 🔺) 0.641s 15 2.04x
💻 Local Next.js (Turbopack) 3.492s (-13.6% 🟢) 4.057s (-9.7% 🟢) 0.001s (-21.0% 🟢) 4.098s (-9.6% 🟢) 0.606s 15 2.06x
💻 Local Express 3.705s (+10.3% 🔺) 4.313s (+10.6% 🔺) 0.001s (+6.7% 🔺) 4.316s (+10.5% 🔺) 0.611s 14 2.19x

▲ Production (Vercel)

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Nitro 5.107s (-6.7% 🟢) 6.533s (+6.9% 🔺) 0.000s (NaN%) 7.199s (+0.8%) 2.092s 9 1.00x
▲ Vercel Express 5.391s (+4.4%) 6.754s (+3.3%) 0.000s (+Infinity% 🔺) 7.288s (+2.9%) 1.897s 9 1.06x
▲ Vercel Next.js (Turbopack) 8.283s (+20.1% 🔺) 8.878s (+17.8% 🔺) 0.010s (+Infinity% 🔺) 10.084s (+17.3% 🔺) 1.801s 6 1.62x

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

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World 🥇 Fastest Framework Wins
💻 Local Nitro 13/21
🐘 Postgres Nitro 10/21
▲ Vercel Express 13/21
Fastest World by Framework

Winner determined by most benchmark wins

Framework 🥇 Fastest World Wins
Express 🐘 Postgres 15/21
Next.js (Turbopack) 🐘 Postgres 16/21
Nitro 🐘 Postgres 15/21
Column Definitions
  • Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
  • TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
  • Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
  • Wall Time: Total testbench time (trigger workflow + poll for result)
  • Overhead: Testbench overhead (Wall Time - Workflow Time)
  • Samples: Number of benchmark iterations run
  • vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

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

📋 View full workflow run

@NathanColosimo NathanColosimo force-pushed the nathanc/align-world-runtime-versions branch from 6fc811d to 0de82cf Compare June 26, 2026 20:25

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Additional Suggestion:

JSDoc for World.specVersion documents a removed graceful v2 fallback, contradicting the new strict-equality assertWorldSupportsRuntimeProtocol that throws when specVersion is undefined/older/newer.

Fix on Vercel

@NathanColosimo NathanColosimo force-pushed the nathanc/align-world-runtime-versions branch from 0de82cf to 35f5c4f Compare June 26, 2026 22:14
@NathanColosimo NathanColosimo marked this pull request as ready for review June 26, 2026 23:14
@NathanColosimo NathanColosimo requested review from a team and ijjk as code owners June 26, 2026 23:14
@NathanColosimo NathanColosimo enabled auto-merge (squash) June 26, 2026 23:14
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