[worlds] [runtime] Change serialized stream ID gen from v4 UUIDs to ULIDs and fix stream list endpoint - #625

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VaguelySerious merged 9 commits into
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peter/stream-name-change
Dec 17, 2025
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[worlds] [runtime] Change serialized stream ID gen from v4 UUIDs to ULIDs and fix stream list endpoint#625
VaguelySerious merged 9 commits into
mainfrom
peter/stream-name-change

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@VaguelySeriousVaguelySerious commented Dec 16, 2025•
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Streams list in local/postgres world now shows all streams, including ones passed as step input/outputs, and those streams are now guaranteed to be ULIDs instead of UUIDv4.

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🦋 Changeset detected

Latest commit: fbdd2d9

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

This PR includes changesets to release 14 packages
NameType
@workflow/world-postgresPatch
@workflow/world-localPatch
@workflow/corePatch
@workflow/cliPatch
@workflow/buildersPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/web-sharedPatch
workflowPatch
@workflow/world-testingPatch
@workflow/astroPatch
@workflow/sveltekitPatch
@workflow/nuxtPatch
@workflow/aiPatch

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

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VaguelySerious marked this pull request as draft December 16, 2025 12:59
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📊 Benchmark Results

📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.

workflow with no steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.032s (-30.0% 🟢)1.007s (~)0.976s101.00x
🌐 StarterNext.js (Turbopack)0.039s (+34.5% 🔺)1.014s (~)0.975s101.24x
🌐 RedisNext.js (Turbopack)0.041s (-3.5%)1.017s (~)0.977s101.30x
💻 LocalNitro0.041s (-10.2% 🟢)1.006s (~)0.965s101.31x
💻 LocalNext.js (Turbopack)0.043s (+5.1% 🔺)1.019s (~)0.975s101.37x
🌐 MongoDBNext.js (Turbopack)0.064s (-32.2% 🟢)1.015s (~)0.950s102.04x
🌐 TursoNext.js (Turbopack)0.098s (-13.5% 🟢)1.014s (~)0.916s103.10x
🐘 PostgresNext.js (Turbopack)0.122s (-8.3% 🟢)1.020s (~)0.898s103.88x
🐘 PostgresNitro0.219s (-30.5% 🟢)1.012s (~)0.793s106.95x
🐘 PostgresExpress0.341s (+28.3% 🔺)1.013s (-0.8%)0.672s1010.83x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Next.js (Turbopack)0.662s (-21.3% 🟢)1.600s (-4.9%)0.939s101.00x
▲ VercelExpress0.677s (-7.6% 🟢)1.627s (-3.8%)0.950s101.02x
▲ VercelNitro0.696s (+23.1% 🔺)1.696s (+22.6% 🔺)1.000s101.05x

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

workflow with 1 step

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.076s (-3.4%)2.007s (~)0.931s101.00x
💻 LocalNext.js (Turbopack)1.097s (~)2.012s (~)0.915s101.02x
🌐 StarterNext.js (Turbopack)1.097s (+2.4%)2.009s (~)0.912s101.02x
🌐 RedisNext.js (Turbopack)1.100s (~)2.012s (~)0.912s101.02x
💻 LocalNitro1.111s (-0.6%)2.007s (~)0.896s101.03x
🌐 TursoNext.js (Turbopack)1.295s (~)2.013s (~)0.717s101.20x
🌐 MongoDBNext.js (Turbopack)1.306s (~)2.015s (~)0.709s101.21x
🐘 PostgresExpress1.696s (-20.5% 🟢)2.013s (-33.2% 🟢)0.317s101.58x
🐘 PostgresNext.js (Turbopack)1.714s (-30.1% 🟢)2.016s (-33.2% 🟢)0.301s101.59x
🐘 PostgresNitro2.119s (-2.5%)3.015s (~)0.896s101.97x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.661s (+1.0%)3.795s (+7.8% 🔺)1.134s101.00x
▲ VercelExpress2.916s (+16.6% 🔺)3.760s (+6.6% 🔺)0.844s101.10x
▲ VercelNext.js (Turbopack)2.929s (+9.3% 🔺)4.306s (+20.9% 🔺)1.377s101.10x

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

workflow with 10 sequential steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express10.514s (-2.7%)11.014s (~)0.500s51.00x
🌐 StarterNext.js (Turbopack)10.593s (+1.3%)11.012s (~)0.418s51.01x
🌐 RedisNext.js (Turbopack)10.666s (~)11.018s (~)0.352s51.01x
💻 LocalNext.js (Turbopack)10.687s (~)11.018s (~)0.331s51.02x
💻 LocalNitro10.788s (~)11.014s (~)0.227s51.03x
🌐 TursoNext.js (Turbopack)12.222s (~)13.024s (~)0.802s51.16x
🌐 MongoDBNext.js (Turbopack)12.295s (~)13.036s (~)0.740s51.17x
🐘 PostgresNext.js (Turbopack)14.916s (-9.6% 🟢)15.237s (-10.6% 🟢)0.321s51.42x
🐘 PostgresExpress15.313s (-25.2% 🟢)16.033s (-23.8% 🟢)0.720s51.46x
🐘 PostgresNitro15.414s (-0.8%)16.029s (-1.3%)0.615s51.47x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro22.885s (+9.5% 🔺)23.772s (+10.1% 🔺)0.888s51.00x
▲ VercelNext.js (Turbopack)23.020s (+8.9% 🔺)23.654s (+8.3% 🔺)0.634s51.01x
▲ VercelExpress23.701s (+16.0% 🔺)24.812s (+17.2% 🔺)1.111s51.04x

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

workflow with 10 parallel steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.312s (-7.5% 🟢)2.007s (~)0.695s51.00x
🌐 RedisNext.js (Turbopack)1.332s (-0.7%)2.010s (~)0.678s51.02x
💻 LocalNext.js (Turbopack)1.352s (~)2.011s (~)0.659s51.03x
🌐 StarterNext.js (Turbopack)1.353s (+3.0%)2.008s (~)0.655s51.03x
💻 LocalNitro1.406s (+0.8%)2.007s (~)0.601s51.07x
🐘 PostgresNext.js (Turbopack)1.667s (-7.7% 🟢)2.215s (~)0.547s51.27x
🌐 MongoDBNext.js (Turbopack)2.154s (+1.4%)3.015s (~)0.861s51.64x
🌐 TursoNext.js (Turbopack)2.191s (~)3.014s (~)0.823s51.67x
🐘 PostgresNitro2.293s (+3.1%)2.812s (+16.7% 🔺)0.520s51.75x
🐘 PostgresExpress2.299s (-10.6% 🟢)2.613s (-13.3% 🟢)0.313s51.75x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express4.133s (+12.2% 🔺)5.071s (+13.6% 🔺)0.938s51.00x
▲ VercelNitro4.226s (+10.4% 🔺)5.078s (+10.7% 🔺)0.852s51.02x
▲ VercelNext.js (Turbopack)4.313s (+10.0% 🔺)4.955s (+8.5% 🔺)0.642s51.04x

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

stress test: Promise.all with 100 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🌐 Starter🥇 Next.js (Turbopack)6.535s (+6.1% 🔺)6.795s (+7.4% 🔺)0.260s51.00x
🌐 RedisNext.js (Turbopack)7.835s (-7.2% 🟢)8.487s (-6.5% 🟢)0.652s41.20x
🐘 PostgresNitro8.742s (-0.8%)9.001s (-2.1%)0.259s41.34x
🐘 PostgresNext.js (Turbopack)8.863s (-2.4%)9.065s (-4.5%)0.202s41.36x
🐘 PostgresExpress9.121s (-1.7%)9.238s (-4.6%)0.117s41.40x
💻 LocalExpress11.331s (-15.8% 🟢)11.588s (-14.9% 🟢)0.257s31.73x
💻 LocalNitro13.695s (~)13.758s (-1.4%)0.063s32.10x
💻 LocalNext.js (Turbopack)14.160s (-9.0% 🟢)14.411s (-9.2% 🟢)0.251s32.17x
🌐 TursoNext.js (Turbopack)20.078s (+0.6%)20.541s (~)0.463s23.07x
🌐 MongoDBNext.js (Turbopack)20.161s (+0.6%)20.534s (~)0.373s23.08x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express18.706s (-18.0% 🟢)19.760s (-17.2% 🟢)1.055s21.00x
▲ VercelNitro20.640s (-7.0% 🟢)21.929s (-6.1% 🟢)1.288s21.10x
▲ VercelNext.js (Turbopack)21.221s (~)21.875s (+0.9%)0.655s21.13x

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

stress test: Promise.race with 100 concurrent steps

💻 Local Development

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🌐 Starter🥇 Next.js (Turbopack)6.760s (+10.5% 🔺)7.026s (+9.4% 🔺)0.266s51.00x
🌐 RedisNext.js (Turbopack)8.263s (-3.3%)8.363s (-7.5% 🟢)0.100s41.22x
🐘 PostgresNext.js (Turbopack)9.402s (+4.0%)9.637s (+2.7%)0.236s41.39x
🐘 PostgresExpress9.465s (-6.8% 🟢)9.901s (-4.9%)0.436s41.40x
🐘 PostgresNitro9.855s (+9.0% 🔺)10.093s (+8.1% 🔺)0.238s31.46x
💻 LocalExpress13.269s (-12.9% 🟢)13.420s (-13.3% 🟢)0.151s31.96x
💻 LocalNitro14.137s (-13.2% 🟢)14.235s (-13.1% 🟢)0.097s32.09x
💻 LocalNext.js (Turbopack)16.087s (-6.4% 🟢)16.396s (-6.5% 🟢)0.309s22.38x
🌐 MongoDBNext.js (Turbopack)20.058s (~)20.571s (~)0.514s22.97x
🌐 TursoNext.js (Turbopack)20.312s (+1.1%)20.532s (~)0.220s23.00x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro18.537s (-6.2% 🟢)19.617s (-4.2%)1.080s21.00x
▲ VercelExpress20.478s (-2.7%)21.249s (-4.7%)0.771s21.10x
▲ VercelNext.js (Turbopack)21.982s (+5.5% 🔺)22.633s (+5.4% 🔺)0.651s21.19x

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

Stream Benchmarks(includes TTFB metrics)
workflow with stream

💻 Local Development

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.106s (-41.8% 🟢)0.999s (+0.6%)0.012s (-26.8% 🟢)1.018s (-0.5%)0.913s101.00x
🌐 StarterNext.js (Turbopack)0.127s (+34.3% 🔺)1.005s (~)0.000s (NaN%)1.010s (~)0.883s101.20x
💻 LocalNext.js (Turbopack)0.139s (-3.4%)1.002s (~)0.016s (+1.2%)1.026s (~)0.888s101.31x
🌐 RedisNext.js (Turbopack)0.142s (-1.7%)1.004s (~)0.000s (-100.0% 🟢)1.014s (~)0.872s101.34x
💻 LocalNitro0.176s (-2.4%)0.993s (~)0.014s (~)1.021s (~)0.844s101.67x
🌐 TursoNext.js (Turbopack)0.491s (-0.9%)0.964s (+1.0%)0.000s (+Infinity% 🔺)1.014s (~)0.522s104.65x
🌐 MongoDBNext.js (Turbopack)0.515s (+5.0% 🔺)0.938s (-1.9%)0.000s (~)1.014s (~)0.499s104.87x
🐘 PostgresNext.js (Turbopack)0.842s (-3.2%)1.430s (+45.9% 🔺)0.000s (-100.0% 🟢)1.516s (+35.9% 🔺)0.675s107.95x
🐘 PostgresNitro1.151s (-10.7% 🟢)1.892s (+15.0% 🔺)0.000s (-100.0% 🟢)2.013s (+5.3% 🔺)0.863s1010.88x
🐘 PostgresExpress1.263s (-42.8% 🟢)1.779s (-37.3% 🟢)0.000s (NaN%)2.013s (-33.3% 🟢)0.750s1011.94x

▲ Production (Vercel)

WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express2.833s (+8.4% 🔺)3.271s (+5.6% 🔺)0.548s (+83.7% 🔺)4.307s (+14.4% 🔺)1.474s101.00x
▲ VercelNitro2.871s (-35.0% 🟢)3.275s (-29.0% 🟢)0.424s (-42.8% 🟢)4.168s (-29.8% 🟢)1.297s101.01x
▲ VercelNext.js (Turbopack)3.182s (-47.8% 🟢)3.888s (-31.8% 🟢)1.409s (+232.0% 🔺)5.767s (-21.3% 🟢)2.586s101.12x

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

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World🥇 Fastest FrameworkWins
💻 LocalExpress7/7
🐘 PostgresNext.js (Turbopack)5/7
▲ VercelNitro3/7
Fastest World by Framework

Winner determined by most benchmark wins

Framework🥇 Fastest WorldWins
Express💻 Local5/7
Next.js (Turbopack)🌐 Starter5/7
Nitro💻 Local5/7
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
  • 🌐 Starter: Community world (local development)
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)

📋 View full workflow run

@github-actions

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🧪 E2E Test Results

❌ Some tests failed

Summary

PassedFailedSkippedTotal
❌ ▲ Vercel Production278811297
✅ 💻 Local Development26208270
❌ 📦 Local Production26118270
✅ 🐘 Local Postgres26208270
✅ 🪟 Windows270027
❌ 🌍 Community Worlds109110120
Total119920351254

❌ Failed Tests

▲ Vercel Production (8 failed)

nextjs-turbopack (8 failed):

  • addTenWorkflow
  • addTenWorkflow
  • retryAttemptCounterWorkflow
  • crossFileErrorWorkflow - stack traces work across imported modules
  • hookCleanupTestWorkflow - hook token reuse after workflow completion
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars)
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step
📦 Local Production (1 failed)

hono-stable (1 failed):

  • webhookWorkflow
🌍 Community Worlds (11 failed)

mongodb (1 failed):

  • webhookWorkflow

redis (1 failed):

  • webhookWorkflow

starter (8 failed):

  • addTenWorkflow
  • addTenWorkflow
  • retryAttemptCounterWorkflow
  • crossFileErrorWorkflow - stack traces work across imported modules
  • hookCleanupTestWorkflow - hook token reuse after workflow completion
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars)
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step

turso (1 failed):

  • webhookWorkflow

Details by Category

❌ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro2601
✅ example2601
✅ express2601
✅ fastify2601
✅ hono2601
❌ nextjs-turbopack1881
✅ nextjs-webpack2601
✅ nitro2601
✅ nuxt2601
✅ sveltekit2601
✅ vite2601
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
✅ hono-stable2601
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
❌ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
❌ hono-stable2511
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
✅ hono-stable2601
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack2700
❌ 🌍 Community Worlds
AppPassedFailedSkipped
✅ mongodb-dev300
❌ mongodb2610
✅ redis-dev300
❌ redis2610
✅ starter-dev300
❌ starter1980
✅ turso-dev300
❌ turso2610

📋 View full workflow run

❌ Some E2E test jobs failed:

  • Vercel Prod: failure
  • Local Dev: success
  • Local Prod: failure
  • Local Postgres: success
  • Windows: success

Check the workflow run for details.

vercel[bot]
vercelBot reviewed Dec 16, 2025
View reviewed changes
Comment threadpackages/world-local/src/streamer.ts
TooTallNate
TooTallNate reviewed Dec 17, 2025
View reviewed changes
Comment threadpackages/core/src/vm/index.ts Outdated
return array;
}

(g as any).stableUlid = createStableUlid(rng);

@TooTallNateTooTallNateDec 17, 2025

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I don't love this… could we perhaps move this into the Symbol.for('WORKFLOW_CONTEXT') object instead, or maybe its own separate symbol?

@VaguelySerious
VaguelySerious merged commit 712f6f8 into mainDec 17, 2025
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@VaguelySerious
VaguelySerious deleted the peter/stream-name-change branch December 17, 2025 19:44
@vercel-release-botvercel-release-bot mentioned this pull request Dec 17, 2025
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[worlds] [runtime] Change serialized stream ID gen from v4 UUIDs to ULIDs and fix stream list endpoint - #625
Merged
VaguelySerious merged 9 commits into
mainfrom 
peter/stream-name-change
Dec 17, 2025
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[worlds] [runtime] Change serialized stream ID gen from v4 UUIDs to ULIDs and fix stream list endpoint#625
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Streams list in local/postgres world now shows all streams, including ones passed as step input/outputs, and those streams are now guaranteed to be ULIDs instead of UUIDv4.
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🦋 Changeset detected
Latest commit: fbdd2d9
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 14 packages
NameType
@workflow/world-postgresPatch
@workflow/world-localPatch
@workflow/corePatch
@workflow/cliPatch
@workflow/buildersPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/web-sharedPatch
workflowPatch
@workflow/world-testingPatch
@workflow/astroPatch
@workflow/sveltekitPatch
@workflow/nuxtPatch
@workflow/aiPatch
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
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📊 Benchmark Results
📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.
workflow with no steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.032s (-30.0% 🟢)1.007s (~)0.976s101.00x
🌐 StarterNext.js (Turbopack)0.039s (+34.5% 🔺)1.014s (~)0.975s101.24x
🌐 RedisNext.js (Turbopack)0.041s (-3.5%)1.017s (~)0.977s101.30x
💻 LocalNitro0.041s (-10.2% 🟢)1.006s (~)0.965s101.31x
💻 LocalNext.js (Turbopack)0.043s (+5.1% 🔺)1.019s (~)0.975s101.37x
🌐 MongoDBNext.js (Turbopack)0.064s (-32.2% 🟢)1.015s (~)0.950s102.04x
🌐 TursoNext.js (Turbopack)0.098s (-13.5% 🟢)1.014s (~)0.916s103.10x
🐘 PostgresNext.js (Turbopack)0.122s (-8.3% 🟢)1.020s (~)0.898s103.88x
🐘 PostgresNitro0.219s (-30.5% 🟢)1.012s (~)0.793s106.95x
🐘 PostgresExpress0.341s (+28.3% 🔺)1.013s (-0.8%)0.672s1010.83x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Next.js (Turbopack)0.662s (-21.3% 🟢)1.600s (-4.9%)0.939s101.00x
▲ VercelExpress0.677s (-7.6% 🟢)1.627s (-3.8%)0.950s101.02x
▲ VercelNitro0.696s (+23.1% 🔺)1.696s (+22.6% 🔺)1.000s101.05x
🔍 Observability: Next.js (Turbopack) | Express | Nitro
workflow with 1 step
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.076s (-3.4%)2.007s (~)0.931s101.00x
💻 LocalNext.js (Turbopack)1.097s (~)2.012s (~)0.915s101.02x
🌐 StarterNext.js (Turbopack)1.097s (+2.4%)2.009s (~)0.912s101.02x
🌐 RedisNext.js (Turbopack)1.100s (~)2.012s (~)0.912s101.02x
💻 LocalNitro1.111s (-0.6%)2.007s (~)0.896s101.03x
🌐 TursoNext.js (Turbopack)1.295s (~)2.013s (~)0.717s101.20x
🌐 MongoDBNext.js (Turbopack)1.306s (~)2.015s (~)0.709s101.21x
🐘 PostgresExpress1.696s (-20.5% 🟢)2.013s (-33.2% 🟢)0.317s101.58x
🐘 PostgresNext.js (Turbopack)1.714s (-30.1% 🟢)2.016s (-33.2% 🟢)0.301s101.59x
🐘 PostgresNitro2.119s (-2.5%)3.015s (~)0.896s101.97x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.661s (+1.0%)3.795s (+7.8% 🔺)1.134s101.00x
▲ VercelExpress2.916s (+16.6% 🔺)3.760s (+6.6% 🔺)0.844s101.10x
▲ VercelNext.js (Turbopack)2.929s (+9.3% 🔺)4.306s (+20.9% 🔺)1.377s101.10x
🔍 Observability: Nitro | Express | Next.js (Turbopack)
workflow with 10 sequential steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express10.514s (-2.7%)11.014s (~)0.500s51.00x
🌐 StarterNext.js (Turbopack)10.593s (+1.3%)11.012s (~)0.418s51.01x
🌐 RedisNext.js (Turbopack)10.666s (~)11.018s (~)0.352s51.01x
💻 LocalNext.js (Turbopack)10.687s (~)11.018s (~)0.331s51.02x
💻 LocalNitro10.788s (~)11.014s (~)0.227s51.03x
🌐 TursoNext.js (Turbopack)12.222s (~)13.024s (~)0.802s51.16x
🌐 MongoDBNext.js (Turbopack)12.295s (~)13.036s (~)0.740s51.17x
🐘 PostgresNext.js (Turbopack)14.916s (-9.6% 🟢)15.237s (-10.6% 🟢)0.321s51.42x
🐘 PostgresExpress15.313s (-25.2% 🟢)16.033s (-23.8% 🟢)0.720s51.46x
🐘 PostgresNitro15.414s (-0.8%)16.029s (-1.3%)0.615s51.47x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro22.885s (+9.5% 🔺)23.772s (+10.1% 🔺)0.888s51.00x
▲ VercelNext.js (Turbopack)23.020s (+8.9% 🔺)23.654s (+8.3% 🔺)0.634s51.01x
▲ VercelExpress23.701s (+16.0% 🔺)24.812s (+17.2% 🔺)1.111s51.04x
🔍 Observability: Nitro | Next.js (Turbopack) | Express
workflow with 10 parallel steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.312s (-7.5% 🟢)2.007s (~)0.695s51.00x
🌐 RedisNext.js (Turbopack)1.332s (-0.7%)2.010s (~)0.678s51.02x
💻 LocalNext.js (Turbopack)1.352s (~)2.011s (~)0.659s51.03x
🌐 StarterNext.js (Turbopack)1.353s (+3.0%)2.008s (~)0.655s51.03x
💻 LocalNitro1.406s (+0.8%)2.007s (~)0.601s51.07x
🐘 PostgresNext.js (Turbopack)1.667s (-7.7% 🟢)2.215s (~)0.547s51.27x
🌐 MongoDBNext.js (Turbopack)2.154s (+1.4%)3.015s (~)0.861s51.64x
🌐 TursoNext.js (Turbopack)2.191s (~)3.014s (~)0.823s51.67x
🐘 PostgresNitro2.293s (+3.1%)2.812s (+16.7% 🔺)0.520s51.75x
🐘 PostgresExpress2.299s (-10.6% 🟢)2.613s (-13.3% 🟢)0.313s51.75x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express4.133s (+12.2% 🔺)5.071s (+13.6% 🔺)0.938s51.00x
▲ VercelNitro4.226s (+10.4% 🔺)5.078s (+10.7% 🔺)0.852s51.02x
▲ VercelNext.js (Turbopack)4.313s (+10.0% 🔺)4.955s (+8.5% 🔺)0.642s51.04x
🔍 Observability: Express | Nitro | Next.js (Turbopack)
stress test: Promise.all with 100 concurrent steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🌐 Starter🥇 Next.js (Turbopack)6.535s (+6.1% 🔺)6.795s (+7.4% 🔺)0.260s51.00x
🌐 RedisNext.js (Turbopack)7.835s (-7.2% 🟢)8.487s (-6.5% 🟢)0.652s41.20x
🐘 PostgresNitro8.742s (-0.8%)9.001s (-2.1%)0.259s41.34x
🐘 PostgresNext.js (Turbopack)8.863s (-2.4%)9.065s (-4.5%)0.202s41.36x
🐘 PostgresExpress9.121s (-1.7%)9.238s (-4.6%)0.117s41.40x
💻 LocalExpress11.331s (-15.8% 🟢)11.588s (-14.9% 🟢)0.257s31.73x
💻 LocalNitro13.695s (~)13.758s (-1.4%)0.063s32.10x
💻 LocalNext.js (Turbopack)14.160s (-9.0% 🟢)14.411s (-9.2% 🟢)0.251s32.17x
🌐 TursoNext.js (Turbopack)20.078s (+0.6%)20.541s (~)0.463s23.07x
🌐 MongoDBNext.js (Turbopack)20.161s (+0.6%)20.534s (~)0.373s23.08x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express18.706s (-18.0% 🟢)19.760s (-17.2% 🟢)1.055s21.00x
▲ VercelNitro20.640s (-7.0% 🟢)21.929s (-6.1% 🟢)1.288s21.10x
▲ VercelNext.js (Turbopack)21.221s (~)21.875s (+0.9%)0.655s21.13x
🔍 Observability: Express | Nitro | Next.js (Turbopack)
stress test: Promise.race with 100 concurrent steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🌐 Starter🥇 Next.js (Turbopack)6.760s (+10.5% 🔺)7.026s (+9.4% 🔺)0.266s51.00x
🌐 RedisNext.js (Turbopack)8.263s (-3.3%)8.363s (-7.5% 🟢)0.100s41.22x
🐘 PostgresNext.js (Turbopack)9.402s (+4.0%)9.637s (+2.7%)0.236s41.39x
🐘 PostgresExpress9.465s (-6.8% 🟢)9.901s (-4.9%)0.436s41.40x
🐘 PostgresNitro9.855s (+9.0% 🔺)10.093s (+8.1% 🔺)0.238s31.46x
💻 LocalExpress13.269s (-12.9% 🟢)13.420s (-13.3% 🟢)0.151s31.96x
💻 LocalNitro14.137s (-13.2% 🟢)14.235s (-13.1% 🟢)0.097s32.09x
💻 LocalNext.js (Turbopack)16.087s (-6.4% 🟢)16.396s (-6.5% 🟢)0.309s22.38x
🌐 MongoDBNext.js (Turbopack)20.058s (~)20.571s (~)0.514s22.97x
🌐 TursoNext.js (Turbopack)20.312s (+1.1%)20.532s (~)0.220s23.00x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro18.537s (-6.2% 🟢)19.617s (-4.2%)1.080s21.00x
▲ VercelExpress20.478s (-2.7%)21.249s (-4.7%)0.771s21.10x
▲ VercelNext.js (Turbopack)21.982s (+5.5% 🔺)22.633s (+5.4% 🔺)0.651s21.19x
🔍 Observability: Nitro | Express | Next.js (Turbopack)
Stream Benchmarks(includes TTFB metrics)
workflow with stream
💻 Local Development
WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.106s (-41.8% 🟢)0.999s (+0.6%)0.012s (-26.8% 🟢)1.018s (-0.5%)0.913s101.00x
🌐 StarterNext.js (Turbopack)0.127s (+34.3% 🔺)1.005s (~)0.000s (NaN%)1.010s (~)0.883s101.20x
💻 LocalNext.js (Turbopack)0.139s (-3.4%)1.002s (~)0.016s (+1.2%)1.026s (~)0.888s101.31x
🌐 RedisNext.js (Turbopack)0.142s (-1.7%)1.004s (~)0.000s (-100.0% 🟢)1.014s (~)0.872s101.34x
💻 LocalNitro0.176s (-2.4%)0.993s (~)0.014s (~)1.021s (~)0.844s101.67x
🌐 TursoNext.js (Turbopack)0.491s (-0.9%)0.964s (+1.0%)0.000s (+Infinity% 🔺)1.014s (~)0.522s104.65x
🌐 MongoDBNext.js (Turbopack)0.515s (+5.0% 🔺)0.938s (-1.9%)0.000s (~)1.014s (~)0.499s104.87x
🐘 PostgresNext.js (Turbopack)0.842s (-3.2%)1.430s (+45.9% 🔺)0.000s (-100.0% 🟢)1.516s (+35.9% 🔺)0.675s107.95x
🐘 PostgresNitro1.151s (-10.7% 🟢)1.892s (+15.0% 🔺)0.000s (-100.0% 🟢)2.013s (+5.3% 🔺)0.863s1010.88x
🐘 PostgresExpress1.263s (-42.8% 🟢)1.779s (-37.3% 🟢)0.000s (NaN%)2.013s (-33.3% 🟢)0.750s1011.94x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express2.833s (+8.4% 🔺)3.271s (+5.6% 🔺)0.548s (+83.7% 🔺)4.307s (+14.4% 🔺)1.474s101.00x
▲ VercelNitro2.871s (-35.0% 🟢)3.275s (-29.0% 🟢)0.424s (-42.8% 🟢)4.168s (-29.8% 🟢)1.297s101.01x
▲ VercelNext.js (Turbopack)3.182s (-47.8% 🟢)3.888s (-31.8% 🟢)1.409s (+232.0% 🔺)5.767s (-21.3% 🟢)2.586s101.12x
🔍 Observability: Express | Nitro | Next.js (Turbopack)
Summary
Fastest Framework by World
Winner determined by most benchmark wins
World🥇 Fastest FrameworkWins
💻 LocalExpress7/7
🐘 PostgresNext.js (Turbopack)5/7
▲ VercelNitro3/7
Fastest World by Framework
Winner determined by most benchmark wins
Framework🥇 Fastest WorldWins
Express💻 Local5/7
Next.js (Turbopack)🌐 Starter5/7
Nitro💻 Local5/7
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
  • 🌐 Starter: Community world (local development)
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
📋 View full workflow run
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🧪 E2E Test Results
❌ Some tests failed
Summary
PassedFailedSkippedTotal
❌ ▲ Vercel Production278811297
✅ 💻 Local Development26208270
❌ 📦 Local Production26118270
✅ 🐘 Local Postgres26208270
✅ 🪟 Windows270027
❌ 🌍 Community Worlds109110120
Total119920351254
❌ Failed Tests
▲ Vercel Production (8 failed)
nextjs-turbopack (8 failed):
  • addTenWorkflow
  • addTenWorkflow
  • retryAttemptCounterWorkflow
  • crossFileErrorWorkflow - stack traces work across imported modules
  • hookCleanupTestWorkflow - hook token reuse after workflow completion
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars)
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step
📦 Local Production (1 failed)
hono-stable (1 failed):
  • webhookWorkflow
🌍 Community Worlds (11 failed)
mongodb (1 failed):
  • webhookWorkflow
redis (1 failed):
  • webhookWorkflow
starter (8 failed):
  • addTenWorkflow
  • addTenWorkflow
  • retryAttemptCounterWorkflow
  • crossFileErrorWorkflow - stack traces work across imported modules
  • hookCleanupTestWorkflow - hook token reuse after workflow completion
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars)
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step
turso (1 failed):
  • webhookWorkflow
Details by Category
❌ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro2601
✅ example2601
✅ express2601
✅ fastify2601
✅ hono2601
❌ nextjs-turbopack1881
✅ nextjs-webpack2601
✅ nitro2601
✅ nuxt2601
✅ sveltekit2601
✅ vite2601
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
✅ hono-stable2601
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
❌ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
❌ hono-stable2511
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
✅ hono-stable2601
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack2700
❌ 🌍 Community Worlds
AppPassedFailedSkipped
✅ mongodb-dev300
❌ mongodb2610
✅ redis-dev300
❌ redis2610
✅ starter-dev300
❌ starter1980
✅ turso-dev300
❌ turso2610
📋 View full workflow run
❌ Some E2E test jobs failed:
  • Vercel Prod: failure
  • Local Dev: success
  • Local Prod: failure
  • Local Postgres: success
  • Windows: success
Check the workflow run for details.
vercel[bot]
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Dec 16, 2025
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Comment threadpackages/world-local/src/streamer.ts
TooTallNate
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Dec 17, 2025
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Comment threadpackages/core/src/vm/index.ts
Outdated

 return array;
 }

 (g as any).stableUlid = createStableUlid(rng);
@TooTallNateTooTallNateDec 17, 2025

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I don't love this… could we perhaps move this into the Symbol.for('WORKFLOW_CONTEXT') object instead, or maybe its own separate symbol?
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[worlds] [runtime] Change serialized stream ID gen from v4 UUIDs to ULIDs and fix stream list endpoint - #625
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VaguelySerious merged 9 commits into
mainfrom 
peter/stream-name-change
Dec 17, 2025
Merged
[worlds] [runtime] Change serialized stream ID gen from v4 UUIDs to ULIDs and fix stream list endpoint#625
VaguelySerious merged 9 commits into
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peter/stream-name-change
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@VaguelySerious
@VaguelySeriousVaguelySerious
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Streams list in local/postgres world now shows all streams, including ones passed as step input/outputs, and those streams are now guaranteed to be ULIDs instead of UUIDv4.
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🦋 Changeset detected
Latest commit: fbdd2d9
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 14 packages
NameType
@workflow/world-postgresPatch
@workflow/world-localPatch
@workflow/corePatch
@workflow/cliPatch
@workflow/buildersPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/web-sharedPatch
workflowPatch
@workflow/world-testingPatch
@workflow/astroPatch
@workflow/sveltekitPatch
@workflow/nuxtPatch
@workflow/aiPatch
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📊 Benchmark Results
📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.
workflow with no steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.032s (-30.0% 🟢)1.007s (~)0.976s101.00x
🌐 StarterNext.js (Turbopack)0.039s (+34.5% 🔺)1.014s (~)0.975s101.24x
🌐 RedisNext.js (Turbopack)0.041s (-3.5%)1.017s (~)0.977s101.30x
💻 LocalNitro0.041s (-10.2% 🟢)1.006s (~)0.965s101.31x
💻 LocalNext.js (Turbopack)0.043s (+5.1% 🔺)1.019s (~)0.975s101.37x
🌐 MongoDBNext.js (Turbopack)0.064s (-32.2% 🟢)1.015s (~)0.950s102.04x
🌐 TursoNext.js (Turbopack)0.098s (-13.5% 🟢)1.014s (~)0.916s103.10x
🐘 PostgresNext.js (Turbopack)0.122s (-8.3% 🟢)1.020s (~)0.898s103.88x
🐘 PostgresNitro0.219s (-30.5% 🟢)1.012s (~)0.793s106.95x
🐘 PostgresExpress0.341s (+28.3% 🔺)1.013s (-0.8%)0.672s1010.83x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Next.js (Turbopack)0.662s (-21.3% 🟢)1.600s (-4.9%)0.939s101.00x
▲ VercelExpress0.677s (-7.6% 🟢)1.627s (-3.8%)0.950s101.02x
▲ VercelNitro0.696s (+23.1% 🔺)1.696s (+22.6% 🔺)1.000s101.05x
🔍 Observability: Next.js (Turbopack) | Express | Nitro
workflow with 1 step
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.076s (-3.4%)2.007s (~)0.931s101.00x
💻 LocalNext.js (Turbopack)1.097s (~)2.012s (~)0.915s101.02x
🌐 StarterNext.js (Turbopack)1.097s (+2.4%)2.009s (~)0.912s101.02x
🌐 RedisNext.js (Turbopack)1.100s (~)2.012s (~)0.912s101.02x
💻 LocalNitro1.111s (-0.6%)2.007s (~)0.896s101.03x
🌐 TursoNext.js (Turbopack)1.295s (~)2.013s (~)0.717s101.20x
🌐 MongoDBNext.js (Turbopack)1.306s (~)2.015s (~)0.709s101.21x
🐘 PostgresExpress1.696s (-20.5% 🟢)2.013s (-33.2% 🟢)0.317s101.58x
🐘 PostgresNext.js (Turbopack)1.714s (-30.1% 🟢)2.016s (-33.2% 🟢)0.301s101.59x
🐘 PostgresNitro2.119s (-2.5%)3.015s (~)0.896s101.97x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.661s (+1.0%)3.795s (+7.8% 🔺)1.134s101.00x
▲ VercelExpress2.916s (+16.6% 🔺)3.760s (+6.6% 🔺)0.844s101.10x
▲ VercelNext.js (Turbopack)2.929s (+9.3% 🔺)4.306s (+20.9% 🔺)1.377s101.10x
🔍 Observability: Nitro | Express | Next.js (Turbopack)
workflow with 10 sequential steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express10.514s (-2.7%)11.014s (~)0.500s51.00x
🌐 StarterNext.js (Turbopack)10.593s (+1.3%)11.012s (~)0.418s51.01x
🌐 RedisNext.js (Turbopack)10.666s (~)11.018s (~)0.352s51.01x
💻 LocalNext.js (Turbopack)10.687s (~)11.018s (~)0.331s51.02x
💻 LocalNitro10.788s (~)11.014s (~)0.227s51.03x
🌐 TursoNext.js (Turbopack)12.222s (~)13.024s (~)0.802s51.16x
🌐 MongoDBNext.js (Turbopack)12.295s (~)13.036s (~)0.740s51.17x
🐘 PostgresNext.js (Turbopack)14.916s (-9.6% 🟢)15.237s (-10.6% 🟢)0.321s51.42x
🐘 PostgresExpress15.313s (-25.2% 🟢)16.033s (-23.8% 🟢)0.720s51.46x
🐘 PostgresNitro15.414s (-0.8%)16.029s (-1.3%)0.615s51.47x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro22.885s (+9.5% 🔺)23.772s (+10.1% 🔺)0.888s51.00x
▲ VercelNext.js (Turbopack)23.020s (+8.9% 🔺)23.654s (+8.3% 🔺)0.634s51.01x
▲ VercelExpress23.701s (+16.0% 🔺)24.812s (+17.2% 🔺)1.111s51.04x
🔍 Observability: Nitro | Next.js (Turbopack) | Express
workflow with 10 parallel steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.312s (-7.5% 🟢)2.007s (~)0.695s51.00x
🌐 RedisNext.js (Turbopack)1.332s (-0.7%)2.010s (~)0.678s51.02x
💻 LocalNext.js (Turbopack)1.352s (~)2.011s (~)0.659s51.03x
🌐 StarterNext.js (Turbopack)1.353s (+3.0%)2.008s (~)0.655s51.03x
💻 LocalNitro1.406s (+0.8%)2.007s (~)0.601s51.07x
🐘 PostgresNext.js (Turbopack)1.667s (-7.7% 🟢)2.215s (~)0.547s51.27x
🌐 MongoDBNext.js (Turbopack)2.154s (+1.4%)3.015s (~)0.861s51.64x
🌐 TursoNext.js (Turbopack)2.191s (~)3.014s (~)0.823s51.67x
🐘 PostgresNitro2.293s (+3.1%)2.812s (+16.7% 🔺)0.520s51.75x
🐘 PostgresExpress2.299s (-10.6% 🟢)2.613s (-13.3% 🟢)0.313s51.75x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express4.133s (+12.2% 🔺)5.071s (+13.6% 🔺)0.938s51.00x
▲ VercelNitro4.226s (+10.4% 🔺)5.078s (+10.7% 🔺)0.852s51.02x
▲ VercelNext.js (Turbopack)4.313s (+10.0% 🔺)4.955s (+8.5% 🔺)0.642s51.04x
🔍 Observability: Express | Nitro | Next.js (Turbopack)
stress test: Promise.all with 100 concurrent steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🌐 Starter🥇 Next.js (Turbopack)6.535s (+6.1% 🔺)6.795s (+7.4% 🔺)0.260s51.00x
🌐 RedisNext.js (Turbopack)7.835s (-7.2% 🟢)8.487s (-6.5% 🟢)0.652s41.20x
🐘 PostgresNitro8.742s (-0.8%)9.001s (-2.1%)0.259s41.34x
🐘 PostgresNext.js (Turbopack)8.863s (-2.4%)9.065s (-4.5%)0.202s41.36x
🐘 PostgresExpress9.121s (-1.7%)9.238s (-4.6%)0.117s41.40x
💻 LocalExpress11.331s (-15.8% 🟢)11.588s (-14.9% 🟢)0.257s31.73x
💻 LocalNitro13.695s (~)13.758s (-1.4%)0.063s32.10x
💻 LocalNext.js (Turbopack)14.160s (-9.0% 🟢)14.411s (-9.2% 🟢)0.251s32.17x
🌐 TursoNext.js (Turbopack)20.078s (+0.6%)20.541s (~)0.463s23.07x
🌐 MongoDBNext.js (Turbopack)20.161s (+0.6%)20.534s (~)0.373s23.08x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express18.706s (-18.0% 🟢)19.760s (-17.2% 🟢)1.055s21.00x
▲ VercelNitro20.640s (-7.0% 🟢)21.929s (-6.1% 🟢)1.288s21.10x
▲ VercelNext.js (Turbopack)21.221s (~)21.875s (+0.9%)0.655s21.13x
🔍 Observability: Express | Nitro | Next.js (Turbopack)
stress test: Promise.race with 100 concurrent steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🌐 Starter🥇 Next.js (Turbopack)6.760s (+10.5% 🔺)7.026s (+9.4% 🔺)0.266s51.00x
🌐 RedisNext.js (Turbopack)8.263s (-3.3%)8.363s (-7.5% 🟢)0.100s41.22x
🐘 PostgresNext.js (Turbopack)9.402s (+4.0%)9.637s (+2.7%)0.236s41.39x
🐘 PostgresExpress9.465s (-6.8% 🟢)9.901s (-4.9%)0.436s41.40x
🐘 PostgresNitro9.855s (+9.0% 🔺)10.093s (+8.1% 🔺)0.238s31.46x
💻 LocalExpress13.269s (-12.9% 🟢)13.420s (-13.3% 🟢)0.151s31.96x
💻 LocalNitro14.137s (-13.2% 🟢)14.235s (-13.1% 🟢)0.097s32.09x
💻 LocalNext.js (Turbopack)16.087s (-6.4% 🟢)16.396s (-6.5% 🟢)0.309s22.38x
🌐 MongoDBNext.js (Turbopack)20.058s (~)20.571s (~)0.514s22.97x
🌐 TursoNext.js (Turbopack)20.312s (+1.1%)20.532s (~)0.220s23.00x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro18.537s (-6.2% 🟢)19.617s (-4.2%)1.080s21.00x
▲ VercelExpress20.478s (-2.7%)21.249s (-4.7%)0.771s21.10x
▲ VercelNext.js (Turbopack)21.982s (+5.5% 🔺)22.633s (+5.4% 🔺)0.651s21.19x
🔍 Observability: Nitro | Express | Next.js (Turbopack)
Stream Benchmarks(includes TTFB metrics)
workflow with stream
💻 Local Development
WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.106s (-41.8% 🟢)0.999s (+0.6%)0.012s (-26.8% 🟢)1.018s (-0.5%)0.913s101.00x
🌐 StarterNext.js (Turbopack)0.127s (+34.3% 🔺)1.005s (~)0.000s (NaN%)1.010s (~)0.883s101.20x
💻 LocalNext.js (Turbopack)0.139s (-3.4%)1.002s (~)0.016s (+1.2%)1.026s (~)0.888s101.31x
🌐 RedisNext.js (Turbopack)0.142s (-1.7%)1.004s (~)0.000s (-100.0% 🟢)1.014s (~)0.872s101.34x
💻 LocalNitro0.176s (-2.4%)0.993s (~)0.014s (~)1.021s (~)0.844s101.67x
🌐 TursoNext.js (Turbopack)0.491s (-0.9%)0.964s (+1.0%)0.000s (+Infinity% 🔺)1.014s (~)0.522s104.65x
🌐 MongoDBNext.js (Turbopack)0.515s (+5.0% 🔺)0.938s (-1.9%)0.000s (~)1.014s (~)0.499s104.87x
🐘 PostgresNext.js (Turbopack)0.842s (-3.2%)1.430s (+45.9% 🔺)0.000s (-100.0% 🟢)1.516s (+35.9% 🔺)0.675s107.95x
🐘 PostgresNitro1.151s (-10.7% 🟢)1.892s (+15.0% 🔺)0.000s (-100.0% 🟢)2.013s (+5.3% 🔺)0.863s1010.88x
🐘 PostgresExpress1.263s (-42.8% 🟢)1.779s (-37.3% 🟢)0.000s (NaN%)2.013s (-33.3% 🟢)0.750s1011.94x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express2.833s (+8.4% 🔺)3.271s (+5.6% 🔺)0.548s (+83.7% 🔺)4.307s (+14.4% 🔺)1.474s101.00x
▲ VercelNitro2.871s (-35.0% 🟢)3.275s (-29.0% 🟢)0.424s (-42.8% 🟢)4.168s (-29.8% 🟢)1.297s101.01x
▲ VercelNext.js (Turbopack)3.182s (-47.8% 🟢)3.888s (-31.8% 🟢)1.409s (+232.0% 🔺)5.767s (-21.3% 🟢)2.586s101.12x
🔍 Observability: Express | Nitro | Next.js (Turbopack)
Summary
Fastest Framework by World
Winner determined by most benchmark wins
World🥇 Fastest FrameworkWins
💻 LocalExpress7/7
🐘 PostgresNext.js (Turbopack)5/7
▲ VercelNitro3/7
Fastest World by Framework
Winner determined by most benchmark wins
Framework🥇 Fastest WorldWins
Express💻 Local5/7
Next.js (Turbopack)🌐 Starter5/7
Nitro💻 Local5/7
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
  • 🌐 Starter: Community world (local development)
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
📋 View full workflow run
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🧪 E2E Test Results
❌ Some tests failed
Summary
PassedFailedSkippedTotal
❌ ▲ Vercel Production278811297
✅ 💻 Local Development26208270
❌ 📦 Local Production26118270
✅ 🐘 Local Postgres26208270
✅ 🪟 Windows270027
❌ 🌍 Community Worlds109110120
Total119920351254
❌ Failed Tests
▲ Vercel Production (8 failed)
nextjs-turbopack (8 failed):
  • addTenWorkflow
  • addTenWorkflow
  • retryAttemptCounterWorkflow
  • crossFileErrorWorkflow - stack traces work across imported modules
  • hookCleanupTestWorkflow - hook token reuse after workflow completion
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars)
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step
📦 Local Production (1 failed)
hono-stable (1 failed):
  • webhookWorkflow
🌍 Community Worlds (11 failed)
mongodb (1 failed):
  • webhookWorkflow
redis (1 failed):
  • webhookWorkflow
starter (8 failed):
  • addTenWorkflow
  • addTenWorkflow
  • retryAttemptCounterWorkflow
  • crossFileErrorWorkflow - stack traces work across imported modules
  • hookCleanupTestWorkflow - hook token reuse after workflow completion
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars)
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step
turso (1 failed):
  • webhookWorkflow
Details by Category
❌ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro2601
✅ example2601
✅ express2601
✅ fastify2601
✅ hono2601
❌ nextjs-turbopack1881
✅ nextjs-webpack2601
✅ nitro2601
✅ nuxt2601
✅ sveltekit2601
✅ vite2601
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
✅ hono-stable2601
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
❌ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
❌ hono-stable2511
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
✅ hono-stable2601
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack2700
❌ 🌍 Community Worlds
AppPassedFailedSkipped
✅ mongodb-dev300
❌ mongodb2610
✅ redis-dev300
❌ redis2610
✅ starter-dev300
❌ starter1980
✅ turso-dev300
❌ turso2610
📋 View full workflow run
❌ Some E2E test jobs failed:
  • Vercel Prod: failure
  • Local Dev: success
  • Local Prod: failure
  • Local Postgres: success
  • Windows: success
Check the workflow run for details.
vercel[bot]
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Dec 16, 2025
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Comment threadpackages/world-local/src/streamer.ts
TooTallNate
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reviewed
Dec 17, 2025
View reviewed changes
Comment threadpackages/core/src/vm/index.ts
Outdated

 return array;
 }

 (g as any).stableUlid = createStableUlid(rng);
@TooTallNateTooTallNateDec 17, 2025

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I don't love this… could we perhaps move this into the Symbol.for('WORKFLOW_CONTEXT') object instead, or maybe its own separate symbol?
@VaguelySerious
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December 17, 2025 19:44
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
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var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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[worlds] [runtime] Change serialized stream ID gen from v4 UUIDs to ULIDs and fix stream list endpoint - #625
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[worlds] [runtime] Change serialized stream ID gen from v4 UUIDs to ULIDs and fix stream list endpoint#625
VaguelySerious merged 9 commits into
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Streams list in local/postgres world now shows all streams, including ones passed as step input/outputs, and those streams are now guaranteed to be ULIDs instead of UUIDv4.
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🦋 Changeset detected
Latest commit: fbdd2d9
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 14 packages
NameType
@workflow/world-postgresPatch
@workflow/world-localPatch
@workflow/corePatch
@workflow/cliPatch
@workflow/buildersPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/web-sharedPatch
workflowPatch
@workflow/world-testingPatch
@workflow/astroPatch
@workflow/sveltekitPatch
@workflow/nuxtPatch
@workflow/aiPatch
Not sure what this means? Click here to learn what changesets are.
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📊 Benchmark Results
📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.
workflow with no steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.032s (-30.0% 🟢)1.007s (~)0.976s101.00x
🌐 StarterNext.js (Turbopack)0.039s (+34.5% 🔺)1.014s (~)0.975s101.24x
🌐 RedisNext.js (Turbopack)0.041s (-3.5%)1.017s (~)0.977s101.30x
💻 LocalNitro0.041s (-10.2% 🟢)1.006s (~)0.965s101.31x
💻 LocalNext.js (Turbopack)0.043s (+5.1% 🔺)1.019s (~)0.975s101.37x
🌐 MongoDBNext.js (Turbopack)0.064s (-32.2% 🟢)1.015s (~)0.950s102.04x
🌐 TursoNext.js (Turbopack)0.098s (-13.5% 🟢)1.014s (~)0.916s103.10x
🐘 PostgresNext.js (Turbopack)0.122s (-8.3% 🟢)1.020s (~)0.898s103.88x
🐘 PostgresNitro0.219s (-30.5% 🟢)1.012s (~)0.793s106.95x
🐘 PostgresExpress0.341s (+28.3% 🔺)1.013s (-0.8%)0.672s1010.83x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Next.js (Turbopack)0.662s (-21.3% 🟢)1.600s (-4.9%)0.939s101.00x
▲ VercelExpress0.677s (-7.6% 🟢)1.627s (-3.8%)0.950s101.02x
▲ VercelNitro0.696s (+23.1% 🔺)1.696s (+22.6% 🔺)1.000s101.05x
🔍 Observability: Next.js (Turbopack) | Express | Nitro
workflow with 1 step
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.076s (-3.4%)2.007s (~)0.931s101.00x
💻 LocalNext.js (Turbopack)1.097s (~)2.012s (~)0.915s101.02x
🌐 StarterNext.js (Turbopack)1.097s (+2.4%)2.009s (~)0.912s101.02x
🌐 RedisNext.js (Turbopack)1.100s (~)2.012s (~)0.912s101.02x
💻 LocalNitro1.111s (-0.6%)2.007s (~)0.896s101.03x
🌐 TursoNext.js (Turbopack)1.295s (~)2.013s (~)0.717s101.20x
🌐 MongoDBNext.js (Turbopack)1.306s (~)2.015s (~)0.709s101.21x
🐘 PostgresExpress1.696s (-20.5% 🟢)2.013s (-33.2% 🟢)0.317s101.58x
🐘 PostgresNext.js (Turbopack)1.714s (-30.1% 🟢)2.016s (-33.2% 🟢)0.301s101.59x
🐘 PostgresNitro2.119s (-2.5%)3.015s (~)0.896s101.97x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.661s (+1.0%)3.795s (+7.8% 🔺)1.134s101.00x
▲ VercelExpress2.916s (+16.6% 🔺)3.760s (+6.6% 🔺)0.844s101.10x
▲ VercelNext.js (Turbopack)2.929s (+9.3% 🔺)4.306s (+20.9% 🔺)1.377s101.10x
🔍 Observability: Nitro | Express | Next.js (Turbopack)
workflow with 10 sequential steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express10.514s (-2.7%)11.014s (~)0.500s51.00x
🌐 StarterNext.js (Turbopack)10.593s (+1.3%)11.012s (~)0.418s51.01x
🌐 RedisNext.js (Turbopack)10.666s (~)11.018s (~)0.352s51.01x
💻 LocalNext.js (Turbopack)10.687s (~)11.018s (~)0.331s51.02x
💻 LocalNitro10.788s (~)11.014s (~)0.227s51.03x
🌐 TursoNext.js (Turbopack)12.222s (~)13.024s (~)0.802s51.16x
🌐 MongoDBNext.js (Turbopack)12.295s (~)13.036s (~)0.740s51.17x
🐘 PostgresNext.js (Turbopack)14.916s (-9.6% 🟢)15.237s (-10.6% 🟢)0.321s51.42x
🐘 PostgresExpress15.313s (-25.2% 🟢)16.033s (-23.8% 🟢)0.720s51.46x
🐘 PostgresNitro15.414s (-0.8%)16.029s (-1.3%)0.615s51.47x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro22.885s (+9.5% 🔺)23.772s (+10.1% 🔺)0.888s51.00x
▲ VercelNext.js (Turbopack)23.020s (+8.9% 🔺)23.654s (+8.3% 🔺)0.634s51.01x
▲ VercelExpress23.701s (+16.0% 🔺)24.812s (+17.2% 🔺)1.111s51.04x
🔍 Observability: Nitro | Next.js (Turbopack) | Express
workflow with 10 parallel steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.312s (-7.5% 🟢)2.007s (~)0.695s51.00x
🌐 RedisNext.js (Turbopack)1.332s (-0.7%)2.010s (~)0.678s51.02x
💻 LocalNext.js (Turbopack)1.352s (~)2.011s (~)0.659s51.03x
🌐 StarterNext.js (Turbopack)1.353s (+3.0%)2.008s (~)0.655s51.03x
💻 LocalNitro1.406s (+0.8%)2.007s (~)0.601s51.07x
🐘 PostgresNext.js (Turbopack)1.667s (-7.7% 🟢)2.215s (~)0.547s51.27x
🌐 MongoDBNext.js (Turbopack)2.154s (+1.4%)3.015s (~)0.861s51.64x
🌐 TursoNext.js (Turbopack)2.191s (~)3.014s (~)0.823s51.67x
🐘 PostgresNitro2.293s (+3.1%)2.812s (+16.7% 🔺)0.520s51.75x
🐘 PostgresExpress2.299s (-10.6% 🟢)2.613s (-13.3% 🟢)0.313s51.75x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express4.133s (+12.2% 🔺)5.071s (+13.6% 🔺)0.938s51.00x
▲ VercelNitro4.226s (+10.4% 🔺)5.078s (+10.7% 🔺)0.852s51.02x
▲ VercelNext.js (Turbopack)4.313s (+10.0% 🔺)4.955s (+8.5% 🔺)0.642s51.04x
🔍 Observability: Express | Nitro | Next.js (Turbopack)
stress test: Promise.all with 100 concurrent steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🌐 Starter🥇 Next.js (Turbopack)6.535s (+6.1% 🔺)6.795s (+7.4% 🔺)0.260s51.00x
🌐 RedisNext.js (Turbopack)7.835s (-7.2% 🟢)8.487s (-6.5% 🟢)0.652s41.20x
🐘 PostgresNitro8.742s (-0.8%)9.001s (-2.1%)0.259s41.34x
🐘 PostgresNext.js (Turbopack)8.863s (-2.4%)9.065s (-4.5%)0.202s41.36x
🐘 PostgresExpress9.121s (-1.7%)9.238s (-4.6%)0.117s41.40x
💻 LocalExpress11.331s (-15.8% 🟢)11.588s (-14.9% 🟢)0.257s31.73x
💻 LocalNitro13.695s (~)13.758s (-1.4%)0.063s32.10x
💻 LocalNext.js (Turbopack)14.160s (-9.0% 🟢)14.411s (-9.2% 🟢)0.251s32.17x
🌐 TursoNext.js (Turbopack)20.078s (+0.6%)20.541s (~)0.463s23.07x
🌐 MongoDBNext.js (Turbopack)20.161s (+0.6%)20.534s (~)0.373s23.08x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express18.706s (-18.0% 🟢)19.760s (-17.2% 🟢)1.055s21.00x
▲ VercelNitro20.640s (-7.0% 🟢)21.929s (-6.1% 🟢)1.288s21.10x
▲ VercelNext.js (Turbopack)21.221s (~)21.875s (+0.9%)0.655s21.13x
🔍 Observability: Express | Nitro | Next.js (Turbopack)
stress test: Promise.race with 100 concurrent steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🌐 Starter🥇 Next.js (Turbopack)6.760s (+10.5% 🔺)7.026s (+9.4% 🔺)0.266s51.00x
🌐 RedisNext.js (Turbopack)8.263s (-3.3%)8.363s (-7.5% 🟢)0.100s41.22x
🐘 PostgresNext.js (Turbopack)9.402s (+4.0%)9.637s (+2.7%)0.236s41.39x
🐘 PostgresExpress9.465s (-6.8% 🟢)9.901s (-4.9%)0.436s41.40x
🐘 PostgresNitro9.855s (+9.0% 🔺)10.093s (+8.1% 🔺)0.238s31.46x
💻 LocalExpress13.269s (-12.9% 🟢)13.420s (-13.3% 🟢)0.151s31.96x
💻 LocalNitro14.137s (-13.2% 🟢)14.235s (-13.1% 🟢)0.097s32.09x
💻 LocalNext.js (Turbopack)16.087s (-6.4% 🟢)16.396s (-6.5% 🟢)0.309s22.38x
🌐 MongoDBNext.js (Turbopack)20.058s (~)20.571s (~)0.514s22.97x
🌐 TursoNext.js (Turbopack)20.312s (+1.1%)20.532s (~)0.220s23.00x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro18.537s (-6.2% 🟢)19.617s (-4.2%)1.080s21.00x
▲ VercelExpress20.478s (-2.7%)21.249s (-4.7%)0.771s21.10x
▲ VercelNext.js (Turbopack)21.982s (+5.5% 🔺)22.633s (+5.4% 🔺)0.651s21.19x
🔍 Observability: Nitro | Express | Next.js (Turbopack)
Stream Benchmarks(includes TTFB metrics)
workflow with stream
💻 Local Development
WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.106s (-41.8% 🟢)0.999s (+0.6%)0.012s (-26.8% 🟢)1.018s (-0.5%)0.913s101.00x
🌐 StarterNext.js (Turbopack)0.127s (+34.3% 🔺)1.005s (~)0.000s (NaN%)1.010s (~)0.883s101.20x
💻 LocalNext.js (Turbopack)0.139s (-3.4%)1.002s (~)0.016s (+1.2%)1.026s (~)0.888s101.31x
🌐 RedisNext.js (Turbopack)0.142s (-1.7%)1.004s (~)0.000s (-100.0% 🟢)1.014s (~)0.872s101.34x
💻 LocalNitro0.176s (-2.4%)0.993s (~)0.014s (~)1.021s (~)0.844s101.67x
🌐 TursoNext.js (Turbopack)0.491s (-0.9%)0.964s (+1.0%)0.000s (+Infinity% 🔺)1.014s (~)0.522s104.65x
🌐 MongoDBNext.js (Turbopack)0.515s (+5.0% 🔺)0.938s (-1.9%)0.000s (~)1.014s (~)0.499s104.87x
🐘 PostgresNext.js (Turbopack)0.842s (-3.2%)1.430s (+45.9% 🔺)0.000s (-100.0% 🟢)1.516s (+35.9% 🔺)0.675s107.95x
🐘 PostgresNitro1.151s (-10.7% 🟢)1.892s (+15.0% 🔺)0.000s (-100.0% 🟢)2.013s (+5.3% 🔺)0.863s1010.88x
🐘 PostgresExpress1.263s (-42.8% 🟢)1.779s (-37.3% 🟢)0.000s (NaN%)2.013s (-33.3% 🟢)0.750s1011.94x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express2.833s (+8.4% 🔺)3.271s (+5.6% 🔺)0.548s (+83.7% 🔺)4.307s (+14.4% 🔺)1.474s101.00x
▲ VercelNitro2.871s (-35.0% 🟢)3.275s (-29.0% 🟢)0.424s (-42.8% 🟢)4.168s (-29.8% 🟢)1.297s101.01x
▲ VercelNext.js (Turbopack)3.182s (-47.8% 🟢)3.888s (-31.8% 🟢)1.409s (+232.0% 🔺)5.767s (-21.3% 🟢)2.586s101.12x
🔍 Observability: Express | Nitro | Next.js (Turbopack)
Summary
Fastest Framework by World
Winner determined by most benchmark wins
World🥇 Fastest FrameworkWins
💻 LocalExpress7/7
🐘 PostgresNext.js (Turbopack)5/7
▲ VercelNitro3/7
Fastest World by Framework
Winner determined by most benchmark wins
Framework🥇 Fastest WorldWins
Express💻 Local5/7
Next.js (Turbopack)🌐 Starter5/7
Nitro💻 Local5/7
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
  • 🌐 Starter: Community world (local development)
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
📋 View full workflow run
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🧪 E2E Test Results
❌ Some tests failed
Summary
PassedFailedSkippedTotal
❌ ▲ Vercel Production278811297
✅ 💻 Local Development26208270
❌ 📦 Local Production26118270
✅ 🐘 Local Postgres26208270
✅ 🪟 Windows270027
❌ 🌍 Community Worlds109110120
Total119920351254
❌ Failed Tests
▲ Vercel Production (8 failed)
nextjs-turbopack (8 failed):
  • addTenWorkflow
  • addTenWorkflow
  • retryAttemptCounterWorkflow
  • crossFileErrorWorkflow - stack traces work across imported modules
  • hookCleanupTestWorkflow - hook token reuse after workflow completion
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars)
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step
📦 Local Production (1 failed)
hono-stable (1 failed):
  • webhookWorkflow
🌍 Community Worlds (11 failed)
mongodb (1 failed):
  • webhookWorkflow
redis (1 failed):
  • webhookWorkflow
starter (8 failed):
  • addTenWorkflow
  • addTenWorkflow
  • retryAttemptCounterWorkflow
  • crossFileErrorWorkflow - stack traces work across imported modules
  • hookCleanupTestWorkflow - hook token reuse after workflow completion
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars)
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step
turso (1 failed):
  • webhookWorkflow
Details by Category
❌ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro2601
✅ example2601
✅ express2601
✅ fastify2601
✅ hono2601
❌ nextjs-turbopack1881
✅ nextjs-webpack2601
✅ nitro2601
✅ nuxt2601
✅ sveltekit2601
✅ vite2601
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
✅ hono-stable2601
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
❌ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
❌ hono-stable2511
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
✅ hono-stable2601
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack2700
❌ 🌍 Community Worlds
AppPassedFailedSkipped
✅ mongodb-dev300
❌ mongodb2610
✅ redis-dev300
❌ redis2610
✅ starter-dev300
❌ starter1980
✅ turso-dev300
❌ turso2610
📋 View full workflow run
❌ Some E2E test jobs failed:
  • Vercel Prod: failure
  • Local Dev: success
  • Local Prod: failure
  • Local Postgres: success
  • Windows: success
Check the workflow run for details.
vercel[bot]
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Dec 16, 2025
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Comment threadpackages/world-local/src/streamer.ts
TooTallNate
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reviewed
Dec 17, 2025
View reviewed changes
Comment threadpackages/core/src/vm/index.ts
Outdated

 return array;
 }

 (g as any).stableUlid = createStableUlid(rng);
@TooTallNateTooTallNateDec 17, 2025

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I don't love this… could we perhaps move this into the Symbol.for('WORKFLOW_CONTEXT') object instead, or maybe its own separate symbol?
@VaguelySerious
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merged commit 712f6f8
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December 17, 2025 19:44
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

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[worlds] [runtime] Change serialized stream ID gen from v4 UUIDs to ULIDs and fix stream list endpoint - #625
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VaguelySerious merged 9 commits into
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[worlds] [runtime] Change serialized stream ID gen from v4 UUIDs to ULIDs and fix stream list endpoint#625
VaguelySerious merged 9 commits into
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peter/stream-name-change
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Streams list in local/postgres world now shows all streams, including ones passed as step input/outputs, and those streams are now guaranteed to be ULIDs instead of UUIDv4.
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🦋 Changeset detected
Latest commit: fbdd2d9
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 14 packages
NameType
@workflow/world-postgresPatch
@workflow/world-localPatch
@workflow/corePatch
@workflow/cliPatch
@workflow/buildersPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/web-sharedPatch
workflowPatch
@workflow/world-testingPatch
@workflow/astroPatch
@workflow/sveltekitPatch
@workflow/nuxtPatch
@workflow/aiPatch
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
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📊 Benchmark Results
📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.
workflow with no steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.032s (-30.0% 🟢)1.007s (~)0.976s101.00x
🌐 StarterNext.js (Turbopack)0.039s (+34.5% 🔺)1.014s (~)0.975s101.24x
🌐 RedisNext.js (Turbopack)0.041s (-3.5%)1.017s (~)0.977s101.30x
💻 LocalNitro0.041s (-10.2% 🟢)1.006s (~)0.965s101.31x
💻 LocalNext.js (Turbopack)0.043s (+5.1% 🔺)1.019s (~)0.975s101.37x
🌐 MongoDBNext.js (Turbopack)0.064s (-32.2% 🟢)1.015s (~)0.950s102.04x
🌐 TursoNext.js (Turbopack)0.098s (-13.5% 🟢)1.014s (~)0.916s103.10x
🐘 PostgresNext.js (Turbopack)0.122s (-8.3% 🟢)1.020s (~)0.898s103.88x
🐘 PostgresNitro0.219s (-30.5% 🟢)1.012s (~)0.793s106.95x
🐘 PostgresExpress0.341s (+28.3% 🔺)1.013s (-0.8%)0.672s1010.83x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Next.js (Turbopack)0.662s (-21.3% 🟢)1.600s (-4.9%)0.939s101.00x
▲ VercelExpress0.677s (-7.6% 🟢)1.627s (-3.8%)0.950s101.02x
▲ VercelNitro0.696s (+23.1% 🔺)1.696s (+22.6% 🔺)1.000s101.05x
🔍 Observability: Next.js (Turbopack) | Express | Nitro
workflow with 1 step
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.076s (-3.4%)2.007s (~)0.931s101.00x
💻 LocalNext.js (Turbopack)1.097s (~)2.012s (~)0.915s101.02x
🌐 StarterNext.js (Turbopack)1.097s (+2.4%)2.009s (~)0.912s101.02x
🌐 RedisNext.js (Turbopack)1.100s (~)2.012s (~)0.912s101.02x
💻 LocalNitro1.111s (-0.6%)2.007s (~)0.896s101.03x
🌐 TursoNext.js (Turbopack)1.295s (~)2.013s (~)0.717s101.20x
🌐 MongoDBNext.js (Turbopack)1.306s (~)2.015s (~)0.709s101.21x
🐘 PostgresExpress1.696s (-20.5% 🟢)2.013s (-33.2% 🟢)0.317s101.58x
🐘 PostgresNext.js (Turbopack)1.714s (-30.1% 🟢)2.016s (-33.2% 🟢)0.301s101.59x
🐘 PostgresNitro2.119s (-2.5%)3.015s (~)0.896s101.97x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.661s (+1.0%)3.795s (+7.8% 🔺)1.134s101.00x
▲ VercelExpress2.916s (+16.6% 🔺)3.760s (+6.6% 🔺)0.844s101.10x
▲ VercelNext.js (Turbopack)2.929s (+9.3% 🔺)4.306s (+20.9% 🔺)1.377s101.10x
🔍 Observability: Nitro | Express | Next.js (Turbopack)
workflow with 10 sequential steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express10.514s (-2.7%)11.014s (~)0.500s51.00x
🌐 StarterNext.js (Turbopack)10.593s (+1.3%)11.012s (~)0.418s51.01x
🌐 RedisNext.js (Turbopack)10.666s (~)11.018s (~)0.352s51.01x
💻 LocalNext.js (Turbopack)10.687s (~)11.018s (~)0.331s51.02x
💻 LocalNitro10.788s (~)11.014s (~)0.227s51.03x
🌐 TursoNext.js (Turbopack)12.222s (~)13.024s (~)0.802s51.16x
🌐 MongoDBNext.js (Turbopack)12.295s (~)13.036s (~)0.740s51.17x
🐘 PostgresNext.js (Turbopack)14.916s (-9.6% 🟢)15.237s (-10.6% 🟢)0.321s51.42x
🐘 PostgresExpress15.313s (-25.2% 🟢)16.033s (-23.8% 🟢)0.720s51.46x
🐘 PostgresNitro15.414s (-0.8%)16.029s (-1.3%)0.615s51.47x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro22.885s (+9.5% 🔺)23.772s (+10.1% 🔺)0.888s51.00x
▲ VercelNext.js (Turbopack)23.020s (+8.9% 🔺)23.654s (+8.3% 🔺)0.634s51.01x
▲ VercelExpress23.701s (+16.0% 🔺)24.812s (+17.2% 🔺)1.111s51.04x
🔍 Observability: Nitro | Next.js (Turbopack) | Express
workflow with 10 parallel steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.312s (-7.5% 🟢)2.007s (~)0.695s51.00x
🌐 RedisNext.js (Turbopack)1.332s (-0.7%)2.010s (~)0.678s51.02x
💻 LocalNext.js (Turbopack)1.352s (~)2.011s (~)0.659s51.03x
🌐 StarterNext.js (Turbopack)1.353s (+3.0%)2.008s (~)0.655s51.03x
💻 LocalNitro1.406s (+0.8%)2.007s (~)0.601s51.07x
🐘 PostgresNext.js (Turbopack)1.667s (-7.7% 🟢)2.215s (~)0.547s51.27x
🌐 MongoDBNext.js (Turbopack)2.154s (+1.4%)3.015s (~)0.861s51.64x
🌐 TursoNext.js (Turbopack)2.191s (~)3.014s (~)0.823s51.67x
🐘 PostgresNitro2.293s (+3.1%)2.812s (+16.7% 🔺)0.520s51.75x
🐘 PostgresExpress2.299s (-10.6% 🟢)2.613s (-13.3% 🟢)0.313s51.75x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express4.133s (+12.2% 🔺)5.071s (+13.6% 🔺)0.938s51.00x
▲ VercelNitro4.226s (+10.4% 🔺)5.078s (+10.7% 🔺)0.852s51.02x
▲ VercelNext.js (Turbopack)4.313s (+10.0% 🔺)4.955s (+8.5% 🔺)0.642s51.04x
🔍 Observability: Express | Nitro | Next.js (Turbopack)
stress test: Promise.all with 100 concurrent steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🌐 Starter🥇 Next.js (Turbopack)6.535s (+6.1% 🔺)6.795s (+7.4% 🔺)0.260s51.00x
🌐 RedisNext.js (Turbopack)7.835s (-7.2% 🟢)8.487s (-6.5% 🟢)0.652s41.20x
🐘 PostgresNitro8.742s (-0.8%)9.001s (-2.1%)0.259s41.34x
🐘 PostgresNext.js (Turbopack)8.863s (-2.4%)9.065s (-4.5%)0.202s41.36x
🐘 PostgresExpress9.121s (-1.7%)9.238s (-4.6%)0.117s41.40x
💻 LocalExpress11.331s (-15.8% 🟢)11.588s (-14.9% 🟢)0.257s31.73x
💻 LocalNitro13.695s (~)13.758s (-1.4%)0.063s32.10x
💻 LocalNext.js (Turbopack)14.160s (-9.0% 🟢)14.411s (-9.2% 🟢)0.251s32.17x
🌐 TursoNext.js (Turbopack)20.078s (+0.6%)20.541s (~)0.463s23.07x
🌐 MongoDBNext.js (Turbopack)20.161s (+0.6%)20.534s (~)0.373s23.08x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express18.706s (-18.0% 🟢)19.760s (-17.2% 🟢)1.055s21.00x
▲ VercelNitro20.640s (-7.0% 🟢)21.929s (-6.1% 🟢)1.288s21.10x
▲ VercelNext.js (Turbopack)21.221s (~)21.875s (+0.9%)0.655s21.13x
🔍 Observability: Express | Nitro | Next.js (Turbopack)
stress test: Promise.race with 100 concurrent steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🌐 Starter🥇 Next.js (Turbopack)6.760s (+10.5% 🔺)7.026s (+9.4% 🔺)0.266s51.00x
🌐 RedisNext.js (Turbopack)8.263s (-3.3%)8.363s (-7.5% 🟢)0.100s41.22x
🐘 PostgresNext.js (Turbopack)9.402s (+4.0%)9.637s (+2.7%)0.236s41.39x
🐘 PostgresExpress9.465s (-6.8% 🟢)9.901s (-4.9%)0.436s41.40x
🐘 PostgresNitro9.855s (+9.0% 🔺)10.093s (+8.1% 🔺)0.238s31.46x
💻 LocalExpress13.269s (-12.9% 🟢)13.420s (-13.3% 🟢)0.151s31.96x
💻 LocalNitro14.137s (-13.2% 🟢)14.235s (-13.1% 🟢)0.097s32.09x
💻 LocalNext.js (Turbopack)16.087s (-6.4% 🟢)16.396s (-6.5% 🟢)0.309s22.38x
🌐 MongoDBNext.js (Turbopack)20.058s (~)20.571s (~)0.514s22.97x
🌐 TursoNext.js (Turbopack)20.312s (+1.1%)20.532s (~)0.220s23.00x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro18.537s (-6.2% 🟢)19.617s (-4.2%)1.080s21.00x
▲ VercelExpress20.478s (-2.7%)21.249s (-4.7%)0.771s21.10x
▲ VercelNext.js (Turbopack)21.982s (+5.5% 🔺)22.633s (+5.4% 🔺)0.651s21.19x
🔍 Observability: Nitro | Express | Next.js (Turbopack)
Stream Benchmarks(includes TTFB metrics)
workflow with stream
💻 Local Development
WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.106s (-41.8% 🟢)0.999s (+0.6%)0.012s (-26.8% 🟢)1.018s (-0.5%)0.913s101.00x
🌐 StarterNext.js (Turbopack)0.127s (+34.3% 🔺)1.005s (~)0.000s (NaN%)1.010s (~)0.883s101.20x
💻 LocalNext.js (Turbopack)0.139s (-3.4%)1.002s (~)0.016s (+1.2%)1.026s (~)0.888s101.31x
🌐 RedisNext.js (Turbopack)0.142s (-1.7%)1.004s (~)0.000s (-100.0% 🟢)1.014s (~)0.872s101.34x
💻 LocalNitro0.176s (-2.4%)0.993s (~)0.014s (~)1.021s (~)0.844s101.67x
🌐 TursoNext.js (Turbopack)0.491s (-0.9%)0.964s (+1.0%)0.000s (+Infinity% 🔺)1.014s (~)0.522s104.65x
🌐 MongoDBNext.js (Turbopack)0.515s (+5.0% 🔺)0.938s (-1.9%)0.000s (~)1.014s (~)0.499s104.87x
🐘 PostgresNext.js (Turbopack)0.842s (-3.2%)1.430s (+45.9% 🔺)0.000s (-100.0% 🟢)1.516s (+35.9% 🔺)0.675s107.95x
🐘 PostgresNitro1.151s (-10.7% 🟢)1.892s (+15.0% 🔺)0.000s (-100.0% 🟢)2.013s (+5.3% 🔺)0.863s1010.88x
🐘 PostgresExpress1.263s (-42.8% 🟢)1.779s (-37.3% 🟢)0.000s (NaN%)2.013s (-33.3% 🟢)0.750s1011.94x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express2.833s (+8.4% 🔺)3.271s (+5.6% 🔺)0.548s (+83.7% 🔺)4.307s (+14.4% 🔺)1.474s101.00x
▲ VercelNitro2.871s (-35.0% 🟢)3.275s (-29.0% 🟢)0.424s (-42.8% 🟢)4.168s (-29.8% 🟢)1.297s101.01x
▲ VercelNext.js (Turbopack)3.182s (-47.8% 🟢)3.888s (-31.8% 🟢)1.409s (+232.0% 🔺)5.767s (-21.3% 🟢)2.586s101.12x
🔍 Observability: Express | Nitro | Next.js (Turbopack)
Summary
Fastest Framework by World
Winner determined by most benchmark wins
World🥇 Fastest FrameworkWins
💻 LocalExpress7/7
🐘 PostgresNext.js (Turbopack)5/7
▲ VercelNitro3/7
Fastest World by Framework
Winner determined by most benchmark wins
Framework🥇 Fastest WorldWins
Express💻 Local5/7
Next.js (Turbopack)🌐 Starter5/7
Nitro💻 Local5/7
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
  • 🌐 Starter: Community world (local development)
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
📋 View full workflow run
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🧪 E2E Test Results
❌ Some tests failed
Summary
PassedFailedSkippedTotal
❌ ▲ Vercel Production278811297
✅ 💻 Local Development26208270
❌ 📦 Local Production26118270
✅ 🐘 Local Postgres26208270
✅ 🪟 Windows270027
❌ 🌍 Community Worlds109110120
Total119920351254
❌ Failed Tests
▲ Vercel Production (8 failed)
nextjs-turbopack (8 failed):
  • addTenWorkflow
  • addTenWorkflow
  • retryAttemptCounterWorkflow
  • crossFileErrorWorkflow - stack traces work across imported modules
  • hookCleanupTestWorkflow - hook token reuse after workflow completion
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars)
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step
📦 Local Production (1 failed)
hono-stable (1 failed):
  • webhookWorkflow
🌍 Community Worlds (11 failed)
mongodb (1 failed):
  • webhookWorkflow
redis (1 failed):
  • webhookWorkflow
starter (8 failed):
  • addTenWorkflow
  • addTenWorkflow
  • retryAttemptCounterWorkflow
  • crossFileErrorWorkflow - stack traces work across imported modules
  • hookCleanupTestWorkflow - hook token reuse after workflow completion
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars)
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step
turso (1 failed):
  • webhookWorkflow
Details by Category
❌ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro2601
✅ example2601
✅ express2601
✅ fastify2601
✅ hono2601
❌ nextjs-turbopack1881
✅ nextjs-webpack2601
✅ nitro2601
✅ nuxt2601
✅ sveltekit2601
✅ vite2601
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
✅ hono-stable2601
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
❌ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
❌ hono-stable2511
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
✅ hono-stable2601
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack2700
❌ 🌍 Community Worlds
AppPassedFailedSkipped
✅ mongodb-dev300
❌ mongodb2610
✅ redis-dev300
❌ redis2610
✅ starter-dev300
❌ starter1980
✅ turso-dev300
❌ turso2610
📋 View full workflow run
❌ Some E2E test jobs failed:
  • Vercel Prod: failure
  • Local Dev: success
  • Local Prod: failure
  • Local Postgres: success
  • Windows: success
Check the workflow run for details.
vercel[bot]
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reviewed
Dec 16, 2025
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Comment threadpackages/world-local/src/streamer.ts
TooTallNate
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reviewed
Dec 17, 2025
View reviewed changes
Comment threadpackages/core/src/vm/index.ts
Outdated

 return array;
 }

 (g as any).stableUlid = createStableUlid(rng);
@TooTallNateTooTallNateDec 17, 2025

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I don't love this… could we perhaps move this into the Symbol.for('WORKFLOW_CONTEXT') object instead, or maybe its own separate symbol?
@VaguelySerious
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merged commit 712f6f8
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December 17, 2025 19:44
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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[worlds] [runtime] Change serialized stream ID gen from v4 UUIDs to ULIDs and fix stream list endpoint - #625
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VaguelySerious merged 9 commits into
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peter/stream-name-change
Dec 17, 2025
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[worlds] [runtime] Change serialized stream ID gen from v4 UUIDs to ULIDs and fix stream list endpoint#625
VaguelySerious merged 9 commits into
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peter/stream-name-change
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Streams list in local/postgres world now shows all streams, including ones passed as step input/outputs, and those streams are now guaranteed to be ULIDs instead of UUIDv4.
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🦋 Changeset detected
Latest commit: fbdd2d9
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 14 packages
NameType
@workflow/world-postgresPatch
@workflow/world-localPatch
@workflow/corePatch
@workflow/cliPatch
@workflow/buildersPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/web-sharedPatch
workflowPatch
@workflow/world-testingPatch
@workflow/astroPatch
@workflow/sveltekitPatch
@workflow/nuxtPatch
@workflow/aiPatch
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
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📊 Benchmark Results
📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.
workflow with no steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.032s (-30.0% 🟢)1.007s (~)0.976s101.00x
🌐 StarterNext.js (Turbopack)0.039s (+34.5% 🔺)1.014s (~)0.975s101.24x
🌐 RedisNext.js (Turbopack)0.041s (-3.5%)1.017s (~)0.977s101.30x
💻 LocalNitro0.041s (-10.2% 🟢)1.006s (~)0.965s101.31x
💻 LocalNext.js (Turbopack)0.043s (+5.1% 🔺)1.019s (~)0.975s101.37x
🌐 MongoDBNext.js (Turbopack)0.064s (-32.2% 🟢)1.015s (~)0.950s102.04x
🌐 TursoNext.js (Turbopack)0.098s (-13.5% 🟢)1.014s (~)0.916s103.10x
🐘 PostgresNext.js (Turbopack)0.122s (-8.3% 🟢)1.020s (~)0.898s103.88x
🐘 PostgresNitro0.219s (-30.5% 🟢)1.012s (~)0.793s106.95x
🐘 PostgresExpress0.341s (+28.3% 🔺)1.013s (-0.8%)0.672s1010.83x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Next.js (Turbopack)0.662s (-21.3% 🟢)1.600s (-4.9%)0.939s101.00x
▲ VercelExpress0.677s (-7.6% 🟢)1.627s (-3.8%)0.950s101.02x
▲ VercelNitro0.696s (+23.1% 🔺)1.696s (+22.6% 🔺)1.000s101.05x
🔍 Observability: Next.js (Turbopack) | Express | Nitro
workflow with 1 step
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.076s (-3.4%)2.007s (~)0.931s101.00x
💻 LocalNext.js (Turbopack)1.097s (~)2.012s (~)0.915s101.02x
🌐 StarterNext.js (Turbopack)1.097s (+2.4%)2.009s (~)0.912s101.02x
🌐 RedisNext.js (Turbopack)1.100s (~)2.012s (~)0.912s101.02x
💻 LocalNitro1.111s (-0.6%)2.007s (~)0.896s101.03x
🌐 TursoNext.js (Turbopack)1.295s (~)2.013s (~)0.717s101.20x
🌐 MongoDBNext.js (Turbopack)1.306s (~)2.015s (~)0.709s101.21x
🐘 PostgresExpress1.696s (-20.5% 🟢)2.013s (-33.2% 🟢)0.317s101.58x
🐘 PostgresNext.js (Turbopack)1.714s (-30.1% 🟢)2.016s (-33.2% 🟢)0.301s101.59x
🐘 PostgresNitro2.119s (-2.5%)3.015s (~)0.896s101.97x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.661s (+1.0%)3.795s (+7.8% 🔺)1.134s101.00x
▲ VercelExpress2.916s (+16.6% 🔺)3.760s (+6.6% 🔺)0.844s101.10x
▲ VercelNext.js (Turbopack)2.929s (+9.3% 🔺)4.306s (+20.9% 🔺)1.377s101.10x
🔍 Observability: Nitro | Express | Next.js (Turbopack)
workflow with 10 sequential steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express10.514s (-2.7%)11.014s (~)0.500s51.00x
🌐 StarterNext.js (Turbopack)10.593s (+1.3%)11.012s (~)0.418s51.01x
🌐 RedisNext.js (Turbopack)10.666s (~)11.018s (~)0.352s51.01x
💻 LocalNext.js (Turbopack)10.687s (~)11.018s (~)0.331s51.02x
💻 LocalNitro10.788s (~)11.014s (~)0.227s51.03x
🌐 TursoNext.js (Turbopack)12.222s (~)13.024s (~)0.802s51.16x
🌐 MongoDBNext.js (Turbopack)12.295s (~)13.036s (~)0.740s51.17x
🐘 PostgresNext.js (Turbopack)14.916s (-9.6% 🟢)15.237s (-10.6% 🟢)0.321s51.42x
🐘 PostgresExpress15.313s (-25.2% 🟢)16.033s (-23.8% 🟢)0.720s51.46x
🐘 PostgresNitro15.414s (-0.8%)16.029s (-1.3%)0.615s51.47x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro22.885s (+9.5% 🔺)23.772s (+10.1% 🔺)0.888s51.00x
▲ VercelNext.js (Turbopack)23.020s (+8.9% 🔺)23.654s (+8.3% 🔺)0.634s51.01x
▲ VercelExpress23.701s (+16.0% 🔺)24.812s (+17.2% 🔺)1.111s51.04x
🔍 Observability: Nitro | Next.js (Turbopack) | Express
workflow with 10 parallel steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.312s (-7.5% 🟢)2.007s (~)0.695s51.00x
🌐 RedisNext.js (Turbopack)1.332s (-0.7%)2.010s (~)0.678s51.02x
💻 LocalNext.js (Turbopack)1.352s (~)2.011s (~)0.659s51.03x
🌐 StarterNext.js (Turbopack)1.353s (+3.0%)2.008s (~)0.655s51.03x
💻 LocalNitro1.406s (+0.8%)2.007s (~)0.601s51.07x
🐘 PostgresNext.js (Turbopack)1.667s (-7.7% 🟢)2.215s (~)0.547s51.27x
🌐 MongoDBNext.js (Turbopack)2.154s (+1.4%)3.015s (~)0.861s51.64x
🌐 TursoNext.js (Turbopack)2.191s (~)3.014s (~)0.823s51.67x
🐘 PostgresNitro2.293s (+3.1%)2.812s (+16.7% 🔺)0.520s51.75x
🐘 PostgresExpress2.299s (-10.6% 🟢)2.613s (-13.3% 🟢)0.313s51.75x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express4.133s (+12.2% 🔺)5.071s (+13.6% 🔺)0.938s51.00x
▲ VercelNitro4.226s (+10.4% 🔺)5.078s (+10.7% 🔺)0.852s51.02x
▲ VercelNext.js (Turbopack)4.313s (+10.0% 🔺)4.955s (+8.5% 🔺)0.642s51.04x
🔍 Observability: Express | Nitro | Next.js (Turbopack)
stress test: Promise.all with 100 concurrent steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🌐 Starter🥇 Next.js (Turbopack)6.535s (+6.1% 🔺)6.795s (+7.4% 🔺)0.260s51.00x
🌐 RedisNext.js (Turbopack)7.835s (-7.2% 🟢)8.487s (-6.5% 🟢)0.652s41.20x
🐘 PostgresNitro8.742s (-0.8%)9.001s (-2.1%)0.259s41.34x
🐘 PostgresNext.js (Turbopack)8.863s (-2.4%)9.065s (-4.5%)0.202s41.36x
🐘 PostgresExpress9.121s (-1.7%)9.238s (-4.6%)0.117s41.40x
💻 LocalExpress11.331s (-15.8% 🟢)11.588s (-14.9% 🟢)0.257s31.73x
💻 LocalNitro13.695s (~)13.758s (-1.4%)0.063s32.10x
💻 LocalNext.js (Turbopack)14.160s (-9.0% 🟢)14.411s (-9.2% 🟢)0.251s32.17x
🌐 TursoNext.js (Turbopack)20.078s (+0.6%)20.541s (~)0.463s23.07x
🌐 MongoDBNext.js (Turbopack)20.161s (+0.6%)20.534s (~)0.373s23.08x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express18.706s (-18.0% 🟢)19.760s (-17.2% 🟢)1.055s21.00x
▲ VercelNitro20.640s (-7.0% 🟢)21.929s (-6.1% 🟢)1.288s21.10x
▲ VercelNext.js (Turbopack)21.221s (~)21.875s (+0.9%)0.655s21.13x
🔍 Observability: Express | Nitro | Next.js (Turbopack)
stress test: Promise.race with 100 concurrent steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🌐 Starter🥇 Next.js (Turbopack)6.760s (+10.5% 🔺)7.026s (+9.4% 🔺)0.266s51.00x
🌐 RedisNext.js (Turbopack)8.263s (-3.3%)8.363s (-7.5% 🟢)0.100s41.22x
🐘 PostgresNext.js (Turbopack)9.402s (+4.0%)9.637s (+2.7%)0.236s41.39x
🐘 PostgresExpress9.465s (-6.8% 🟢)9.901s (-4.9%)0.436s41.40x
🐘 PostgresNitro9.855s (+9.0% 🔺)10.093s (+8.1% 🔺)0.238s31.46x
💻 LocalExpress13.269s (-12.9% 🟢)13.420s (-13.3% 🟢)0.151s31.96x
💻 LocalNitro14.137s (-13.2% 🟢)14.235s (-13.1% 🟢)0.097s32.09x
💻 LocalNext.js (Turbopack)16.087s (-6.4% 🟢)16.396s (-6.5% 🟢)0.309s22.38x
🌐 MongoDBNext.js (Turbopack)20.058s (~)20.571s (~)0.514s22.97x
🌐 TursoNext.js (Turbopack)20.312s (+1.1%)20.532s (~)0.220s23.00x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro18.537s (-6.2% 🟢)19.617s (-4.2%)1.080s21.00x
▲ VercelExpress20.478s (-2.7%)21.249s (-4.7%)0.771s21.10x
▲ VercelNext.js (Turbopack)21.982s (+5.5% 🔺)22.633s (+5.4% 🔺)0.651s21.19x
🔍 Observability: Nitro | Express | Next.js (Turbopack)
Stream Benchmarks(includes TTFB metrics)
workflow with stream
💻 Local Development
WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.106s (-41.8% 🟢)0.999s (+0.6%)0.012s (-26.8% 🟢)1.018s (-0.5%)0.913s101.00x
🌐 StarterNext.js (Turbopack)0.127s (+34.3% 🔺)1.005s (~)0.000s (NaN%)1.010s (~)0.883s101.20x
💻 LocalNext.js (Turbopack)0.139s (-3.4%)1.002s (~)0.016s (+1.2%)1.026s (~)0.888s101.31x
🌐 RedisNext.js (Turbopack)0.142s (-1.7%)1.004s (~)0.000s (-100.0% 🟢)1.014s (~)0.872s101.34x
💻 LocalNitro0.176s (-2.4%)0.993s (~)0.014s (~)1.021s (~)0.844s101.67x
🌐 TursoNext.js (Turbopack)0.491s (-0.9%)0.964s (+1.0%)0.000s (+Infinity% 🔺)1.014s (~)0.522s104.65x
🌐 MongoDBNext.js (Turbopack)0.515s (+5.0% 🔺)0.938s (-1.9%)0.000s (~)1.014s (~)0.499s104.87x
🐘 PostgresNext.js (Turbopack)0.842s (-3.2%)1.430s (+45.9% 🔺)0.000s (-100.0% 🟢)1.516s (+35.9% 🔺)0.675s107.95x
🐘 PostgresNitro1.151s (-10.7% 🟢)1.892s (+15.0% 🔺)0.000s (-100.0% 🟢)2.013s (+5.3% 🔺)0.863s1010.88x
🐘 PostgresExpress1.263s (-42.8% 🟢)1.779s (-37.3% 🟢)0.000s (NaN%)2.013s (-33.3% 🟢)0.750s1011.94x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express2.833s (+8.4% 🔺)3.271s (+5.6% 🔺)0.548s (+83.7% 🔺)4.307s (+14.4% 🔺)1.474s101.00x
▲ VercelNitro2.871s (-35.0% 🟢)3.275s (-29.0% 🟢)0.424s (-42.8% 🟢)4.168s (-29.8% 🟢)1.297s101.01x
▲ VercelNext.js (Turbopack)3.182s (-47.8% 🟢)3.888s (-31.8% 🟢)1.409s (+232.0% 🔺)5.767s (-21.3% 🟢)2.586s101.12x
🔍 Observability: Express | Nitro | Next.js (Turbopack)
Summary
Fastest Framework by World
Winner determined by most benchmark wins
World🥇 Fastest FrameworkWins
💻 LocalExpress7/7
🐘 PostgresNext.js (Turbopack)5/7
▲ VercelNitro3/7
Fastest World by Framework
Winner determined by most benchmark wins
Framework🥇 Fastest WorldWins
Express💻 Local5/7
Next.js (Turbopack)🌐 Starter5/7
Nitro💻 Local5/7
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
  • 🌐 Starter: Community world (local development)
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
📋 View full workflow run
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🧪 E2E Test Results
❌ Some tests failed
Summary
PassedFailedSkippedTotal
❌ ▲ Vercel Production278811297
✅ 💻 Local Development26208270
❌ 📦 Local Production26118270
✅ 🐘 Local Postgres26208270
✅ 🪟 Windows270027
❌ 🌍 Community Worlds109110120
Total119920351254
❌ Failed Tests
▲ Vercel Production (8 failed)
nextjs-turbopack (8 failed):
  • addTenWorkflow
  • addTenWorkflow
  • retryAttemptCounterWorkflow
  • crossFileErrorWorkflow - stack traces work across imported modules
  • hookCleanupTestWorkflow - hook token reuse after workflow completion
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars)
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step
📦 Local Production (1 failed)
hono-stable (1 failed):
  • webhookWorkflow
🌍 Community Worlds (11 failed)
mongodb (1 failed):
  • webhookWorkflow
redis (1 failed):
  • webhookWorkflow
starter (8 failed):
  • addTenWorkflow
  • addTenWorkflow
  • retryAttemptCounterWorkflow
  • crossFileErrorWorkflow - stack traces work across imported modules
  • hookCleanupTestWorkflow - hook token reuse after workflow completion
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars)
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step
turso (1 failed):
  • webhookWorkflow
Details by Category
❌ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro2601
✅ example2601
✅ express2601
✅ fastify2601
✅ hono2601
❌ nextjs-turbopack1881
✅ nextjs-webpack2601
✅ nitro2601
✅ nuxt2601
✅ sveltekit2601
✅ vite2601
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
✅ hono-stable2601
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
❌ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
❌ hono-stable2511
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
✅ hono-stable2601
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack2700
❌ 🌍 Community Worlds
AppPassedFailedSkipped
✅ mongodb-dev300
❌ mongodb2610
✅ redis-dev300
❌ redis2610
✅ starter-dev300
❌ starter1980
✅ turso-dev300
❌ turso2610
📋 View full workflow run
❌ Some E2E test jobs failed:
  • Vercel Prod: failure
  • Local Dev: success
  • Local Prod: failure
  • Local Postgres: success
  • Windows: success
Check the workflow run for details.
vercel[bot]
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Dec 16, 2025
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Comment threadpackages/world-local/src/streamer.ts
TooTallNate
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reviewed
Dec 17, 2025
View reviewed changes
Comment threadpackages/core/src/vm/index.ts
Outdated

 return array;
 }

 (g as any).stableUlid = createStableUlid(rng);
@TooTallNateTooTallNateDec 17, 2025

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I don't love this… could we perhaps move this into the Symbol.for('WORKFLOW_CONTEXT') object instead, or maybe its own separate symbol?
@VaguelySerious
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el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
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unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
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}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
[worlds] [runtime] Change serialized stream ID gen from v4 UUIDs to ULIDs and fix stream list endpoint - #625
Merged
VaguelySerious merged 9 commits into
mainfrom 
peter/stream-name-change
Dec 17, 2025
Merged
[worlds] [runtime] Change serialized stream ID gen from v4 UUIDs to ULIDs and fix stream list endpoint#625
VaguelySerious merged 9 commits into
mainfrom 
peter/stream-name-change
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Streams list in local/postgres world now shows all streams, including ones passed as step input/outputs, and those streams are now guaranteed to be ULIDs instead of UUIDv4.
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🦋 Changeset detected
Latest commit: fbdd2d9
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 14 packages
NameType
@workflow/world-postgresPatch
@workflow/world-localPatch
@workflow/corePatch
@workflow/cliPatch
@workflow/buildersPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/web-sharedPatch
workflowPatch
@workflow/world-testingPatch
@workflow/astroPatch
@workflow/sveltekitPatch
@workflow/nuxtPatch
@workflow/aiPatch
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
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ProjectDeploymentReviewUpdated (UTC)
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📊 Benchmark Results
📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.
workflow with no steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.032s (-30.0% 🟢)1.007s (~)0.976s101.00x
🌐 StarterNext.js (Turbopack)0.039s (+34.5% 🔺)1.014s (~)0.975s101.24x
🌐 RedisNext.js (Turbopack)0.041s (-3.5%)1.017s (~)0.977s101.30x
💻 LocalNitro0.041s (-10.2% 🟢)1.006s (~)0.965s101.31x
💻 LocalNext.js (Turbopack)0.043s (+5.1% 🔺)1.019s (~)0.975s101.37x
🌐 MongoDBNext.js (Turbopack)0.064s (-32.2% 🟢)1.015s (~)0.950s102.04x
🌐 TursoNext.js (Turbopack)0.098s (-13.5% 🟢)1.014s (~)0.916s103.10x
🐘 PostgresNext.js (Turbopack)0.122s (-8.3% 🟢)1.020s (~)0.898s103.88x
🐘 PostgresNitro0.219s (-30.5% 🟢)1.012s (~)0.793s106.95x
🐘 PostgresExpress0.341s (+28.3% 🔺)1.013s (-0.8%)0.672s1010.83x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Next.js (Turbopack)0.662s (-21.3% 🟢)1.600s (-4.9%)0.939s101.00x
▲ VercelExpress0.677s (-7.6% 🟢)1.627s (-3.8%)0.950s101.02x
▲ VercelNitro0.696s (+23.1% 🔺)1.696s (+22.6% 🔺)1.000s101.05x
🔍 Observability: Next.js (Turbopack) | Express | Nitro
workflow with 1 step
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.076s (-3.4%)2.007s (~)0.931s101.00x
💻 LocalNext.js (Turbopack)1.097s (~)2.012s (~)0.915s101.02x
🌐 StarterNext.js (Turbopack)1.097s (+2.4%)2.009s (~)0.912s101.02x
🌐 RedisNext.js (Turbopack)1.100s (~)2.012s (~)0.912s101.02x
💻 LocalNitro1.111s (-0.6%)2.007s (~)0.896s101.03x
🌐 TursoNext.js (Turbopack)1.295s (~)2.013s (~)0.717s101.20x
🌐 MongoDBNext.js (Turbopack)1.306s (~)2.015s (~)0.709s101.21x
🐘 PostgresExpress1.696s (-20.5% 🟢)2.013s (-33.2% 🟢)0.317s101.58x
🐘 PostgresNext.js (Turbopack)1.714s (-30.1% 🟢)2.016s (-33.2% 🟢)0.301s101.59x
🐘 PostgresNitro2.119s (-2.5%)3.015s (~)0.896s101.97x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.661s (+1.0%)3.795s (+7.8% 🔺)1.134s101.00x
▲ VercelExpress2.916s (+16.6% 🔺)3.760s (+6.6% 🔺)0.844s101.10x
▲ VercelNext.js (Turbopack)2.929s (+9.3% 🔺)4.306s (+20.9% 🔺)1.377s101.10x
🔍 Observability: Nitro | Express | Next.js (Turbopack)
workflow with 10 sequential steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express10.514s (-2.7%)11.014s (~)0.500s51.00x
🌐 StarterNext.js (Turbopack)10.593s (+1.3%)11.012s (~)0.418s51.01x
🌐 RedisNext.js (Turbopack)10.666s (~)11.018s (~)0.352s51.01x
💻 LocalNext.js (Turbopack)10.687s (~)11.018s (~)0.331s51.02x
💻 LocalNitro10.788s (~)11.014s (~)0.227s51.03x
🌐 TursoNext.js (Turbopack)12.222s (~)13.024s (~)0.802s51.16x
🌐 MongoDBNext.js (Turbopack)12.295s (~)13.036s (~)0.740s51.17x
🐘 PostgresNext.js (Turbopack)14.916s (-9.6% 🟢)15.237s (-10.6% 🟢)0.321s51.42x
🐘 PostgresExpress15.313s (-25.2% 🟢)16.033s (-23.8% 🟢)0.720s51.46x
🐘 PostgresNitro15.414s (-0.8%)16.029s (-1.3%)0.615s51.47x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro22.885s (+9.5% 🔺)23.772s (+10.1% 🔺)0.888s51.00x
▲ VercelNext.js (Turbopack)23.020s (+8.9% 🔺)23.654s (+8.3% 🔺)0.634s51.01x
▲ VercelExpress23.701s (+16.0% 🔺)24.812s (+17.2% 🔺)1.111s51.04x
🔍 Observability: Nitro | Next.js (Turbopack) | Express
workflow with 10 parallel steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.312s (-7.5% 🟢)2.007s (~)0.695s51.00x
🌐 RedisNext.js (Turbopack)1.332s (-0.7%)2.010s (~)0.678s51.02x
💻 LocalNext.js (Turbopack)1.352s (~)2.011s (~)0.659s51.03x
🌐 StarterNext.js (Turbopack)1.353s (+3.0%)2.008s (~)0.655s51.03x
💻 LocalNitro1.406s (+0.8%)2.007s (~)0.601s51.07x
🐘 PostgresNext.js (Turbopack)1.667s (-7.7% 🟢)2.215s (~)0.547s51.27x
🌐 MongoDBNext.js (Turbopack)2.154s (+1.4%)3.015s (~)0.861s51.64x
🌐 TursoNext.js (Turbopack)2.191s (~)3.014s (~)0.823s51.67x
🐘 PostgresNitro2.293s (+3.1%)2.812s (+16.7% 🔺)0.520s51.75x
🐘 PostgresExpress2.299s (-10.6% 🟢)2.613s (-13.3% 🟢)0.313s51.75x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express4.133s (+12.2% 🔺)5.071s (+13.6% 🔺)0.938s51.00x
▲ VercelNitro4.226s (+10.4% 🔺)5.078s (+10.7% 🔺)0.852s51.02x
▲ VercelNext.js (Turbopack)4.313s (+10.0% 🔺)4.955s (+8.5% 🔺)0.642s51.04x
🔍 Observability: Express | Nitro | Next.js (Turbopack)
stress test: Promise.all with 100 concurrent steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🌐 Starter🥇 Next.js (Turbopack)6.535s (+6.1% 🔺)6.795s (+7.4% 🔺)0.260s51.00x
🌐 RedisNext.js (Turbopack)7.835s (-7.2% 🟢)8.487s (-6.5% 🟢)0.652s41.20x
🐘 PostgresNitro8.742s (-0.8%)9.001s (-2.1%)0.259s41.34x
🐘 PostgresNext.js (Turbopack)8.863s (-2.4%)9.065s (-4.5%)0.202s41.36x
🐘 PostgresExpress9.121s (-1.7%)9.238s (-4.6%)0.117s41.40x
💻 LocalExpress11.331s (-15.8% 🟢)11.588s (-14.9% 🟢)0.257s31.73x
💻 LocalNitro13.695s (~)13.758s (-1.4%)0.063s32.10x
💻 LocalNext.js (Turbopack)14.160s (-9.0% 🟢)14.411s (-9.2% 🟢)0.251s32.17x
🌐 TursoNext.js (Turbopack)20.078s (+0.6%)20.541s (~)0.463s23.07x
🌐 MongoDBNext.js (Turbopack)20.161s (+0.6%)20.534s (~)0.373s23.08x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express18.706s (-18.0% 🟢)19.760s (-17.2% 🟢)1.055s21.00x
▲ VercelNitro20.640s (-7.0% 🟢)21.929s (-6.1% 🟢)1.288s21.10x
▲ VercelNext.js (Turbopack)21.221s (~)21.875s (+0.9%)0.655s21.13x
🔍 Observability: Express | Nitro | Next.js (Turbopack)
stress test: Promise.race with 100 concurrent steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🌐 Starter🥇 Next.js (Turbopack)6.760s (+10.5% 🔺)7.026s (+9.4% 🔺)0.266s51.00x
🌐 RedisNext.js (Turbopack)8.263s (-3.3%)8.363s (-7.5% 🟢)0.100s41.22x
🐘 PostgresNext.js (Turbopack)9.402s (+4.0%)9.637s (+2.7%)0.236s41.39x
🐘 PostgresExpress9.465s (-6.8% 🟢)9.901s (-4.9%)0.436s41.40x
🐘 PostgresNitro9.855s (+9.0% 🔺)10.093s (+8.1% 🔺)0.238s31.46x
💻 LocalExpress13.269s (-12.9% 🟢)13.420s (-13.3% 🟢)0.151s31.96x
💻 LocalNitro14.137s (-13.2% 🟢)14.235s (-13.1% 🟢)0.097s32.09x
💻 LocalNext.js (Turbopack)16.087s (-6.4% 🟢)16.396s (-6.5% 🟢)0.309s22.38x
🌐 MongoDBNext.js (Turbopack)20.058s (~)20.571s (~)0.514s22.97x
🌐 TursoNext.js (Turbopack)20.312s (+1.1%)20.532s (~)0.220s23.00x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro18.537s (-6.2% 🟢)19.617s (-4.2%)1.080s21.00x
▲ VercelExpress20.478s (-2.7%)21.249s (-4.7%)0.771s21.10x
▲ VercelNext.js (Turbopack)21.982s (+5.5% 🔺)22.633s (+5.4% 🔺)0.651s21.19x
🔍 Observability: Nitro | Express | Next.js (Turbopack)
Stream Benchmarks(includes TTFB metrics)
workflow with stream
💻 Local Development
WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.106s (-41.8% 🟢)0.999s (+0.6%)0.012s (-26.8% 🟢)1.018s (-0.5%)0.913s101.00x
🌐 StarterNext.js (Turbopack)0.127s (+34.3% 🔺)1.005s (~)0.000s (NaN%)1.010s (~)0.883s101.20x
💻 LocalNext.js (Turbopack)0.139s (-3.4%)1.002s (~)0.016s (+1.2%)1.026s (~)0.888s101.31x
🌐 RedisNext.js (Turbopack)0.142s (-1.7%)1.004s (~)0.000s (-100.0% 🟢)1.014s (~)0.872s101.34x
💻 LocalNitro0.176s (-2.4%)0.993s (~)0.014s (~)1.021s (~)0.844s101.67x
🌐 TursoNext.js (Turbopack)0.491s (-0.9%)0.964s (+1.0%)0.000s (+Infinity% 🔺)1.014s (~)0.522s104.65x
🌐 MongoDBNext.js (Turbopack)0.515s (+5.0% 🔺)0.938s (-1.9%)0.000s (~)1.014s (~)0.499s104.87x
🐘 PostgresNext.js (Turbopack)0.842s (-3.2%)1.430s (+45.9% 🔺)0.000s (-100.0% 🟢)1.516s (+35.9% 🔺)0.675s107.95x
🐘 PostgresNitro1.151s (-10.7% 🟢)1.892s (+15.0% 🔺)0.000s (-100.0% 🟢)2.013s (+5.3% 🔺)0.863s1010.88x
🐘 PostgresExpress1.263s (-42.8% 🟢)1.779s (-37.3% 🟢)0.000s (NaN%)2.013s (-33.3% 🟢)0.750s1011.94x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express2.833s (+8.4% 🔺)3.271s (+5.6% 🔺)0.548s (+83.7% 🔺)4.307s (+14.4% 🔺)1.474s101.00x
▲ VercelNitro2.871s (-35.0% 🟢)3.275s (-29.0% 🟢)0.424s (-42.8% 🟢)4.168s (-29.8% 🟢)1.297s101.01x
▲ VercelNext.js (Turbopack)3.182s (-47.8% 🟢)3.888s (-31.8% 🟢)1.409s (+232.0% 🔺)5.767s (-21.3% 🟢)2.586s101.12x
🔍 Observability: Express | Nitro | Next.js (Turbopack)
Summary
Fastest Framework by World
Winner determined by most benchmark wins
World🥇 Fastest FrameworkWins
💻 LocalExpress7/7
🐘 PostgresNext.js (Turbopack)5/7
▲ VercelNitro3/7
Fastest World by Framework
Winner determined by most benchmark wins
Framework🥇 Fastest WorldWins
Express💻 Local5/7
Next.js (Turbopack)🌐 Starter5/7
Nitro💻 Local5/7
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
  • 🌐 Starter: Community world (local development)
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
📋 View full workflow run
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🧪 E2E Test Results
❌ Some tests failed
Summary
PassedFailedSkippedTotal
❌ ▲ Vercel Production278811297
✅ 💻 Local Development26208270
❌ 📦 Local Production26118270
✅ 🐘 Local Postgres26208270
✅ 🪟 Windows270027
❌ 🌍 Community Worlds109110120
Total119920351254
❌ Failed Tests
▲ Vercel Production (8 failed)
nextjs-turbopack (8 failed):
  • addTenWorkflow
  • addTenWorkflow
  • retryAttemptCounterWorkflow
  • crossFileErrorWorkflow - stack traces work across imported modules
  • hookCleanupTestWorkflow - hook token reuse after workflow completion
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars)
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step
📦 Local Production (1 failed)
hono-stable (1 failed):
  • webhookWorkflow
🌍 Community Worlds (11 failed)
mongodb (1 failed):
  • webhookWorkflow
redis (1 failed):
  • webhookWorkflow
starter (8 failed):
  • addTenWorkflow
  • addTenWorkflow
  • retryAttemptCounterWorkflow
  • crossFileErrorWorkflow - stack traces work across imported modules
  • hookCleanupTestWorkflow - hook token reuse after workflow completion
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars)
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step
turso (1 failed):
  • webhookWorkflow
Details by Category
❌ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro2601
✅ example2601
✅ express2601
✅ fastify2601
✅ hono2601
❌ nextjs-turbopack1881
✅ nextjs-webpack2601
✅ nitro2601
✅ nuxt2601
✅ sveltekit2601
✅ vite2601
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
✅ hono-stable2601
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
❌ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
❌ hono-stable2511
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
✅ hono-stable2601
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack2700
❌ 🌍 Community Worlds
AppPassedFailedSkipped
✅ mongodb-dev300
❌ mongodb2610
✅ redis-dev300
❌ redis2610
✅ starter-dev300
❌ starter1980
✅ turso-dev300
❌ turso2610
📋 View full workflow run
❌ Some E2E test jobs failed:
  • Vercel Prod: failure
  • Local Dev: success
  • Local Prod: failure
  • Local Postgres: success
  • Windows: success
Check the workflow run for details.
vercel[bot]
vercelBot
reviewed
Dec 16, 2025
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Comment threadpackages/world-local/src/streamer.ts
TooTallNate
TooTallNate
reviewed
Dec 17, 2025
View reviewed changes
Comment threadpackages/core/src/vm/index.ts
Outdated

 return array;
 }

 (g as any).stableUlid = createStableUlid(rng);
@TooTallNateTooTallNateDec 17, 2025

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I don't love this… could we perhaps move this into the Symbol.for('WORKFLOW_CONTEXT') object instead, or maybe its own separate symbol?
@VaguelySerious
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merged commit 712f6f8
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deleted the

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December 17, 2025 19:44
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Dec 17, 2025
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@VaguelySerious@TooTallNate

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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[worlds] [runtime] Change serialized stream ID gen from v4 UUIDs to ULIDs and fix stream list endpoint - #625
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[worlds] [runtime] Change serialized stream ID gen from v4 UUIDs to ULIDs and fix stream list endpoint#625
VaguelySerious merged 9 commits into
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Streams list in local/postgres world now shows all streams, including ones passed as step input/outputs, and those streams are now guaranteed to be ULIDs instead of UUIDv4.
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🦋 Changeset detected
Latest commit: fbdd2d9
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 14 packages
NameType
@workflow/world-postgresPatch
@workflow/world-localPatch
@workflow/corePatch
@workflow/cliPatch
@workflow/buildersPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/web-sharedPatch
workflowPatch
@workflow/world-testingPatch
@workflow/astroPatch
@workflow/sveltekitPatch
@workflow/nuxtPatch
@workflow/aiPatch
Not sure what this means? Click here to learn what changesets are.
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📊 Benchmark Results
📈 Comparing against baseline from main branch. Green 🟢 = faster, Red 🔺 = slower.
workflow with no steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.032s (-30.0% 🟢)1.007s (~)0.976s101.00x
🌐 StarterNext.js (Turbopack)0.039s (+34.5% 🔺)1.014s (~)0.975s101.24x
🌐 RedisNext.js (Turbopack)0.041s (-3.5%)1.017s (~)0.977s101.30x
💻 LocalNitro0.041s (-10.2% 🟢)1.006s (~)0.965s101.31x
💻 LocalNext.js (Turbopack)0.043s (+5.1% 🔺)1.019s (~)0.975s101.37x
🌐 MongoDBNext.js (Turbopack)0.064s (-32.2% 🟢)1.015s (~)0.950s102.04x
🌐 TursoNext.js (Turbopack)0.098s (-13.5% 🟢)1.014s (~)0.916s103.10x
🐘 PostgresNext.js (Turbopack)0.122s (-8.3% 🟢)1.020s (~)0.898s103.88x
🐘 PostgresNitro0.219s (-30.5% 🟢)1.012s (~)0.793s106.95x
🐘 PostgresExpress0.341s (+28.3% 🔺)1.013s (-0.8%)0.672s1010.83x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Next.js (Turbopack)0.662s (-21.3% 🟢)1.600s (-4.9%)0.939s101.00x
▲ VercelExpress0.677s (-7.6% 🟢)1.627s (-3.8%)0.950s101.02x
▲ VercelNitro0.696s (+23.1% 🔺)1.696s (+22.6% 🔺)1.000s101.05x
🔍 Observability: Next.js (Turbopack) | Express | Nitro
workflow with 1 step
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.076s (-3.4%)2.007s (~)0.931s101.00x
💻 LocalNext.js (Turbopack)1.097s (~)2.012s (~)0.915s101.02x
🌐 StarterNext.js (Turbopack)1.097s (+2.4%)2.009s (~)0.912s101.02x
🌐 RedisNext.js (Turbopack)1.100s (~)2.012s (~)0.912s101.02x
💻 LocalNitro1.111s (-0.6%)2.007s (~)0.896s101.03x
🌐 TursoNext.js (Turbopack)1.295s (~)2.013s (~)0.717s101.20x
🌐 MongoDBNext.js (Turbopack)1.306s (~)2.015s (~)0.709s101.21x
🐘 PostgresExpress1.696s (-20.5% 🟢)2.013s (-33.2% 🟢)0.317s101.58x
🐘 PostgresNext.js (Turbopack)1.714s (-30.1% 🟢)2.016s (-33.2% 🟢)0.301s101.59x
🐘 PostgresNitro2.119s (-2.5%)3.015s (~)0.896s101.97x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro2.661s (+1.0%)3.795s (+7.8% 🔺)1.134s101.00x
▲ VercelExpress2.916s (+16.6% 🔺)3.760s (+6.6% 🔺)0.844s101.10x
▲ VercelNext.js (Turbopack)2.929s (+9.3% 🔺)4.306s (+20.9% 🔺)1.377s101.10x
🔍 Observability: Nitro | Express | Next.js (Turbopack)
workflow with 10 sequential steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express10.514s (-2.7%)11.014s (~)0.500s51.00x
🌐 StarterNext.js (Turbopack)10.593s (+1.3%)11.012s (~)0.418s51.01x
🌐 RedisNext.js (Turbopack)10.666s (~)11.018s (~)0.352s51.01x
💻 LocalNext.js (Turbopack)10.687s (~)11.018s (~)0.331s51.02x
💻 LocalNitro10.788s (~)11.014s (~)0.227s51.03x
🌐 TursoNext.js (Turbopack)12.222s (~)13.024s (~)0.802s51.16x
🌐 MongoDBNext.js (Turbopack)12.295s (~)13.036s (~)0.740s51.17x
🐘 PostgresNext.js (Turbopack)14.916s (-9.6% 🟢)15.237s (-10.6% 🟢)0.321s51.42x
🐘 PostgresExpress15.313s (-25.2% 🟢)16.033s (-23.8% 🟢)0.720s51.46x
🐘 PostgresNitro15.414s (-0.8%)16.029s (-1.3%)0.615s51.47x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro22.885s (+9.5% 🔺)23.772s (+10.1% 🔺)0.888s51.00x
▲ VercelNext.js (Turbopack)23.020s (+8.9% 🔺)23.654s (+8.3% 🔺)0.634s51.01x
▲ VercelExpress23.701s (+16.0% 🔺)24.812s (+17.2% 🔺)1.111s51.04x
🔍 Observability: Nitro | Next.js (Turbopack) | Express
workflow with 10 parallel steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express1.312s (-7.5% 🟢)2.007s (~)0.695s51.00x
🌐 RedisNext.js (Turbopack)1.332s (-0.7%)2.010s (~)0.678s51.02x
💻 LocalNext.js (Turbopack)1.352s (~)2.011s (~)0.659s51.03x
🌐 StarterNext.js (Turbopack)1.353s (+3.0%)2.008s (~)0.655s51.03x
💻 LocalNitro1.406s (+0.8%)2.007s (~)0.601s51.07x
🐘 PostgresNext.js (Turbopack)1.667s (-7.7% 🟢)2.215s (~)0.547s51.27x
🌐 MongoDBNext.js (Turbopack)2.154s (+1.4%)3.015s (~)0.861s51.64x
🌐 TursoNext.js (Turbopack)2.191s (~)3.014s (~)0.823s51.67x
🐘 PostgresNitro2.293s (+3.1%)2.812s (+16.7% 🔺)0.520s51.75x
🐘 PostgresExpress2.299s (-10.6% 🟢)2.613s (-13.3% 🟢)0.313s51.75x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express4.133s (+12.2% 🔺)5.071s (+13.6% 🔺)0.938s51.00x
▲ VercelNitro4.226s (+10.4% 🔺)5.078s (+10.7% 🔺)0.852s51.02x
▲ VercelNext.js (Turbopack)4.313s (+10.0% 🔺)4.955s (+8.5% 🔺)0.642s51.04x
🔍 Observability: Express | Nitro | Next.js (Turbopack)
stress test: Promise.all with 100 concurrent steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🌐 Starter🥇 Next.js (Turbopack)6.535s (+6.1% 🔺)6.795s (+7.4% 🔺)0.260s51.00x
🌐 RedisNext.js (Turbopack)7.835s (-7.2% 🟢)8.487s (-6.5% 🟢)0.652s41.20x
🐘 PostgresNitro8.742s (-0.8%)9.001s (-2.1%)0.259s41.34x
🐘 PostgresNext.js (Turbopack)8.863s (-2.4%)9.065s (-4.5%)0.202s41.36x
🐘 PostgresExpress9.121s (-1.7%)9.238s (-4.6%)0.117s41.40x
💻 LocalExpress11.331s (-15.8% 🟢)11.588s (-14.9% 🟢)0.257s31.73x
💻 LocalNitro13.695s (~)13.758s (-1.4%)0.063s32.10x
💻 LocalNext.js (Turbopack)14.160s (-9.0% 🟢)14.411s (-9.2% 🟢)0.251s32.17x
🌐 TursoNext.js (Turbopack)20.078s (+0.6%)20.541s (~)0.463s23.07x
🌐 MongoDBNext.js (Turbopack)20.161s (+0.6%)20.534s (~)0.373s23.08x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express18.706s (-18.0% 🟢)19.760s (-17.2% 🟢)1.055s21.00x
▲ VercelNitro20.640s (-7.0% 🟢)21.929s (-6.1% 🟢)1.288s21.10x
▲ VercelNext.js (Turbopack)21.221s (~)21.875s (+0.9%)0.655s21.13x
🔍 Observability: Express | Nitro | Next.js (Turbopack)
stress test: Promise.race with 100 concurrent steps
💻 Local Development
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
🌐 Starter🥇 Next.js (Turbopack)6.760s (+10.5% 🔺)7.026s (+9.4% 🔺)0.266s51.00x
🌐 RedisNext.js (Turbopack)8.263s (-3.3%)8.363s (-7.5% 🟢)0.100s41.22x
🐘 PostgresNext.js (Turbopack)9.402s (+4.0%)9.637s (+2.7%)0.236s41.39x
🐘 PostgresExpress9.465s (-6.8% 🟢)9.901s (-4.9%)0.436s41.40x
🐘 PostgresNitro9.855s (+9.0% 🔺)10.093s (+8.1% 🔺)0.238s31.46x
💻 LocalExpress13.269s (-12.9% 🟢)13.420s (-13.3% 🟢)0.151s31.96x
💻 LocalNitro14.137s (-13.2% 🟢)14.235s (-13.1% 🟢)0.097s32.09x
💻 LocalNext.js (Turbopack)16.087s (-6.4% 🟢)16.396s (-6.5% 🟢)0.309s22.38x
🌐 MongoDBNext.js (Turbopack)20.058s (~)20.571s (~)0.514s22.97x
🌐 TursoNext.js (Turbopack)20.312s (+1.1%)20.532s (~)0.220s23.00x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Nitro18.537s (-6.2% 🟢)19.617s (-4.2%)1.080s21.00x
▲ VercelExpress20.478s (-2.7%)21.249s (-4.7%)0.771s21.10x
▲ VercelNext.js (Turbopack)21.982s (+5.5% 🔺)22.633s (+5.4% 🔺)0.651s21.19x
🔍 Observability: Nitro | Express | Next.js (Turbopack)
Stream Benchmarks(includes TTFB metrics)
workflow with stream
💻 Local Development
WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
💻 Local🥇 Express0.106s (-41.8% 🟢)0.999s (+0.6%)0.012s (-26.8% 🟢)1.018s (-0.5%)0.913s101.00x
🌐 StarterNext.js (Turbopack)0.127s (+34.3% 🔺)1.005s (~)0.000s (NaN%)1.010s (~)0.883s101.20x
💻 LocalNext.js (Turbopack)0.139s (-3.4%)1.002s (~)0.016s (+1.2%)1.026s (~)0.888s101.31x
🌐 RedisNext.js (Turbopack)0.142s (-1.7%)1.004s (~)0.000s (-100.0% 🟢)1.014s (~)0.872s101.34x
💻 LocalNitro0.176s (-2.4%)0.993s (~)0.014s (~)1.021s (~)0.844s101.67x
🌐 TursoNext.js (Turbopack)0.491s (-0.9%)0.964s (+1.0%)0.000s (+Infinity% 🔺)1.014s (~)0.522s104.65x
🌐 MongoDBNext.js (Turbopack)0.515s (+5.0% 🔺)0.938s (-1.9%)0.000s (~)1.014s (~)0.499s104.87x
🐘 PostgresNext.js (Turbopack)0.842s (-3.2%)1.430s (+45.9% 🔺)0.000s (-100.0% 🟢)1.516s (+35.9% 🔺)0.675s107.95x
🐘 PostgresNitro1.151s (-10.7% 🟢)1.892s (+15.0% 🔺)0.000s (-100.0% 🟢)2.013s (+5.3% 🔺)0.863s1010.88x
🐘 PostgresExpress1.263s (-42.8% 🟢)1.779s (-37.3% 🟢)0.000s (NaN%)2.013s (-33.3% 🟢)0.750s1011.94x
▲ Production (Vercel)
WorldFrameworkWorkflow TimeTTFBSlurpWall TimeOverheadSamplesvs Fastest
▲ Vercel🥇 Express2.833s (+8.4% 🔺)3.271s (+5.6% 🔺)0.548s (+83.7% 🔺)4.307s (+14.4% 🔺)1.474s101.00x
▲ VercelNitro2.871s (-35.0% 🟢)3.275s (-29.0% 🟢)0.424s (-42.8% 🟢)4.168s (-29.8% 🟢)1.297s101.01x
▲ VercelNext.js (Turbopack)3.182s (-47.8% 🟢)3.888s (-31.8% 🟢)1.409s (+232.0% 🔺)5.767s (-21.3% 🟢)2.586s101.12x
🔍 Observability: Express | Nitro | Next.js (Turbopack)
Summary
Fastest Framework by World
Winner determined by most benchmark wins
World🥇 Fastest FrameworkWins
💻 LocalExpress7/7
🐘 PostgresNext.js (Turbopack)5/7
▲ VercelNitro3/7
Fastest World by Framework
Winner determined by most benchmark wins
Framework🥇 Fastest WorldWins
Express💻 Local5/7
Next.js (Turbopack)🌐 Starter5/7
Nitro💻 Local5/7
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
  • 🌐 Starter: Community world (local development)
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)
📋 View full workflow run
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🧪 E2E Test Results
❌ Some tests failed
Summary
PassedFailedSkippedTotal
❌ ▲ Vercel Production278811297
✅ 💻 Local Development26208270
❌ 📦 Local Production26118270
✅ 🐘 Local Postgres26208270
✅ 🪟 Windows270027
❌ 🌍 Community Worlds109110120
Total119920351254
❌ Failed Tests
▲ Vercel Production (8 failed)
nextjs-turbopack (8 failed):
  • addTenWorkflow
  • addTenWorkflow
  • retryAttemptCounterWorkflow
  • crossFileErrorWorkflow - stack traces work across imported modules
  • hookCleanupTestWorkflow - hook token reuse after workflow completion
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars)
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step
📦 Local Production (1 failed)
hono-stable (1 failed):
  • webhookWorkflow
🌍 Community Worlds (11 failed)
mongodb (1 failed):
  • webhookWorkflow
redis (1 failed):
  • webhookWorkflow
starter (8 failed):
  • addTenWorkflow
  • addTenWorkflow
  • retryAttemptCounterWorkflow
  • crossFileErrorWorkflow - stack traces work across imported modules
  • hookCleanupTestWorkflow - hook token reuse after workflow completion
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars)
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step
turso (1 failed):
  • webhookWorkflow
Details by Category
❌ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro2601
✅ example2601
✅ express2601
✅ fastify2601
✅ hono2601
❌ nextjs-turbopack1881
✅ nextjs-webpack2601
✅ nitro2601
✅ nuxt2601
✅ sveltekit2601
✅ vite2601
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
✅ hono-stable2601
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
❌ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
❌ hono-stable2511
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable2601
✅ express-stable2601
✅ fastify-stable2601
✅ hono-stable2601
✅ nextjs-turbopack-stable2700
✅ nextjs-webpack-stable2700
✅ nitro-stable2601
✅ nuxt-stable2601
✅ sveltekit-stable2601
✅ vite-stable2601
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack2700
❌ 🌍 Community Worlds
AppPassedFailedSkipped
✅ mongodb-dev300
❌ mongodb2610
✅ redis-dev300
❌ redis2610
✅ starter-dev300
❌ starter1980
✅ turso-dev300
❌ turso2610
📋 View full workflow run
❌ Some E2E test jobs failed:
  • Vercel Prod: failure
  • Local Dev: success
  • Local Prod: failure
  • Local Postgres: success
  • Windows: success
Check the workflow run for details.
vercel[bot]
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Dec 16, 2025
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Comment threadpackages/world-local/src/streamer.ts
TooTallNate
TooTallNate
reviewed
Dec 17, 2025
View reviewed changes
Comment threadpackages/core/src/vm/index.ts
Outdated

 return array;
 }

 (g as any).stableUlid = createStableUlid(rng);
@TooTallNateTooTallNateDec 17, 2025

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I don't love this… could we perhaps move this into the Symbol.for('WORKFLOW_CONTEXT') object instead, or maybe its own separate symbol?
@VaguelySerious
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December 17, 2025 19:44
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