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fix(next): skip eager discovery in deferred build mode#1646

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ijjk merged 9 commits intomainfrom
ijjk/fix-deferred-build
Apr 9, 2026
Merged

fix(next): skip eager discovery in deferred build mode#1646
ijjk merged 9 commits intomainfrom
ijjk/fix-deferred-build

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@ijjk ijjk commented Apr 7, 2026 •
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Summary

  • remove deferred builder bootstrap call that eagerly discovers workflow entries via input-graph scanning
  • keep deferred mode discovery loader/socket-driven (plus onBeforeDeferredEntries handling)
  • add local-build coverage to assert deferred Next builds do not log eager discovery
  • add a patch changeset for @workflow/next

x-ref: #1159 (comment)

Validation

  • pnpm vitest run packages/next/src/index.test.ts
  • APP_NAME=nextjs-turbopack pnpm vitest run packages/core/e2e/local-build.test.ts
  • APP_NAME=nextjs-webpack pnpm vitest run packages/core/e2e/local-build.test.ts

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changeset-bot bot commented Apr 7, 2026 •
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🦋 Changeset detected

Latest commit: ed317bd

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

This PR includes changesets to release 16 packages
Name Type
@workflow/next Patch
workflow Patch
@workflow/ai Patch
@workflow/world-testing Patch
@workflow/core Patch
@workflow/builders Patch
@workflow/cli Patch
@workflow/nitro Patch
@workflow/vitest Patch
@workflow/web-shared Patch
@workflow/astro Patch
@workflow/nest Patch
@workflow/rollup Patch
@workflow/sveltekit Patch
@workflow/vite Patch
@workflow/nuxt Patch

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

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

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📊 Benchmark Results

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

workflow with no steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
💻 Local 🥇 Nitro 0.043s (+15.6% 🔺) 1.005s (~) 0.962s 10 1.00x
💻 Local Express 0.044s (+3.7%) 1.005s (~) 0.961s 10 1.03x
💻 Local Next.js (Turbopack) 0.050s 1.006s 0.956s 10 1.16x
🐘 Postgres Next.js (Turbopack) 0.058s 1.009s 0.952s 10 1.34x
🐘 Postgres Express 0.059s (-11.8% 🟢) 1.009s (~) 0.951s 10 1.36x
🐘 Postgres Nitro 0.064s (+1.1%) 1.011s (~) 0.947s 10 1.48x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Next.js (Turbopack) 0.241s (-45.7% 🟢) 2.146s (-3.4%) 1.905s 10 1.00x
▲ Vercel Express 0.255s (+5.4% 🔺) 2.074s (-2.3%) 1.819s 10 1.06x
▲ Vercel Nitro ⚠️ missing - - - -

🔍 Observability: Next.js (Turbopack) | Express

workflow with 1 step

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
💻 Local 🥇 Next.js (Turbopack) 1.128s 2.006s 0.878s 10 1.00x
💻 Local Nitro 1.133s (+2.8%) 2.006s (~) 0.873s 10 1.00x
💻 Local Express 1.135s (~) 2.006s (~) 0.871s 10 1.01x
🐘 Postgres Next.js (Turbopack) 1.145s 2.010s 0.865s 10 1.01x
🐘 Postgres Nitro 1.152s (~) 2.009s (~) 0.856s 10 1.02x
🐘 Postgres Express 1.155s (+0.9%) 2.010s (~) 0.855s 10 1.02x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 2.033s (+8.7% 🔺) 3.764s (-2.1%) 1.731s 10 1.00x
▲ Vercel Next.js (Turbopack) 2.086s (+0.7%) 4.000s (+8.3% 🔺) 1.913s 10 1.03x
▲ Vercel Nitro ⚠️ missing - - - -

🔍 Observability: Express | Next.js (Turbopack)

workflow with 10 sequential steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 10.834s 11.020s 0.186s 3 1.00x
💻 Local Next.js (Turbopack) 10.840s 11.024s 0.184s 3 1.00x
🐘 Postgres Nitro 10.874s (~) 11.021s (~) 0.147s 3 1.00x
🐘 Postgres Express 10.883s (~) 11.023s (~) 0.140s 3 1.00x
💻 Local Nitro 10.921s (+2.3%) 11.023s (~) 0.102s 3 1.01x
💻 Local Express 10.964s (~) 11.024s (~) 0.060s 3 1.01x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 16.389s (-2.1%) 18.368s (-1.9%) 1.979s 2 1.00x
▲ Vercel Next.js (Turbopack) 16.582s (-6.7% 🟢) 18.282s (-3.5%) 1.700s 2 1.01x
▲ Vercel Nitro ⚠️ missing - - - -

🔍 Observability: Express | Next.js (Turbopack)

workflow with 25 sequential steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 14.468s 15.019s 0.551s 4 1.00x
🐘 Postgres Express 14.542s (~) 15.020s (~) 0.478s 4 1.01x
🐘 Postgres Nitro 14.553s (~) 15.022s (~) 0.469s 4 1.01x
💻 Local Next.js (Turbopack) 14.668s 15.029s 0.362s 4 1.01x
💻 Local Nitro 14.964s (+5.2% 🔺) 15.029s (~) 0.065s 4 1.03x
💻 Local Express 15.056s (~) 15.281s (-4.7%) 0.225s 4 1.04x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 31.512s (+4.5%) 33.725s (+4.6%) 2.213s 2 1.00x
▲ Vercel Next.js (Turbopack) 33.758s (-0.5%) 35.717s (-0.7%) 1.959s 2 1.07x
▲ Vercel Nitro ⚠️ missing - - - -

🔍 Observability: Express | Next.js (Turbopack)

workflow with 50 sequential steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 13.725s 14.020s 0.295s 7 1.00x
🐘 Postgres Express 13.979s (-0.8%) 14.453s (-1.9%) 0.473s 7 1.02x
🐘 Postgres Nitro 14.030s (+1.2%) 14.593s (+4.1%) 0.563s 7 1.02x
💻 Local Next.js (Turbopack) 15.994s 16.530s 0.536s 6 1.17x
💻 Local Nitro 16.449s (+10.2% 🔺) 17.031s (+13.3% 🔺) 0.582s 6 1.20x
💻 Local Express 16.766s (-1.0%) 17.031s (~) 0.265s 6 1.22x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 52.527s (~) 54.042s (-1.3%) 1.515s 2 1.00x
▲ Vercel Next.js (Turbopack) 55.452s (+1.3%) 57.626s (+1.0%) 2.175s 2 1.06x
▲ Vercel Nitro ⚠️ missing - - - -

🔍 Observability: Express | Next.js (Turbopack)

Promise.all with 10 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 1.237s 2.009s 0.772s 15 1.00x
🐘 Postgres Express 1.271s (~) 2.010s (~) 0.738s 15 1.03x
🐘 Postgres Nitro 1.272s (~) 2.010s (~) 0.738s 15 1.03x
💻 Local Nitro 1.481s (-0.9%) 2.005s (~) 0.524s 15 1.20x
💻 Local Express 1.487s (-2.7%) 2.006s (~) 0.519s 15 1.20x
💻 Local Next.js (Turbopack) 1.581s 2.006s 0.425s 15 1.28x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Next.js (Turbopack) 2.462s (+3.7%) 4.292s (+10.9% 🔺) 1.830s 7 1.00x
▲ Vercel Express 2.501s (+5.4% 🔺) 4.333s (+4.9%) 1.832s 7 1.02x
▲ Vercel Nitro ⚠️ missing - - - -

🔍 Observability: Next.js (Turbopack) | Express

Promise.all with 25 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 2.327s (~) 3.009s (~) 0.682s 10 1.00x
🐘 Postgres Nitro 2.336s (-1.0%) 3.009s (~) 0.673s 10 1.00x
🐘 Postgres Next.js (Turbopack) 2.410s 3.010s 0.600s 10 1.04x
💻 Local Nitro 2.800s (+2.7%) 3.108s (-3.1%) 0.307s 10 1.20x
💻 Local Express 2.816s (-11.6% 🟢) 3.208s (-20.0% 🟢) 0.393s 10 1.21x
💻 Local Next.js (Turbopack) 2.854s 3.342s 0.488s 9 1.23x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 2.817s (+6.4% 🔺) 4.368s (+6.5% 🔺) 1.551s 7 1.00x
▲ Vercel Next.js (Turbopack) 3.211s (+6.2% 🔺) 5.132s (+16.5% 🔺) 1.921s 6 1.14x
▲ Vercel Nitro ⚠️ missing - - - -

🔍 Observability: Express | Next.js (Turbopack)

Promise.all with 50 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Nitro 3.446s (-1.6%) 4.008s (~) 0.562s 8 1.00x
🐘 Postgres Express 3.471s (-0.9%) 4.010s (~) 0.540s 8 1.01x
🐘 Postgres Next.js (Turbopack) 3.643s 4.009s 0.366s 8 1.06x
💻 Local Nitro 7.572s (-2.2%) 8.021s (-5.8% 🟢) 0.449s 4 2.20x
💻 Local Next.js (Turbopack) 7.585s 8.272s 0.687s 4 2.20x
💻 Local Express 8.070s (-3.3%) 8.522s (-5.6% 🟢) 0.452s 4 2.34x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 3.032s (+2.9%) 4.893s (+3.8%) 1.861s 7 1.00x
▲ Vercel Next.js (Turbopack) 3.452s (+13.7% 🔺) 5.198s (+12.8% 🔺) 1.746s 6 1.14x
▲ Vercel Nitro ⚠️ missing - - - -

🔍 Observability: Express | Next.js (Turbopack)

Promise.race with 10 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 1.222s 2.008s 0.786s 15 1.00x
🐘 Postgres Nitro 1.251s (-0.6%) 2.008s (~) 0.758s 15 1.02x
🐘 Postgres Express 1.261s (-2.7%) 2.009s (~) 0.749s 15 1.03x
💻 Local Express 1.506s (-3.7%) 2.005s (~) 0.499s 15 1.23x
💻 Local Next.js (Turbopack) 1.523s 2.006s 0.483s 15 1.25x
💻 Local Nitro 1.525s (+1.3%) 2.006s (~) 0.481s 15 1.25x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Next.js (Turbopack) 1.962s (-9.4% 🟢) 3.772s (+5.3% 🔺) 1.810s 8 1.00x
▲ Vercel Express 2.136s (+10.9% 🔺) 4.008s (+7.9% 🔺) 1.873s 8 1.09x
▲ Vercel Nitro ⚠️ missing - - - -

🔍 Observability: Next.js (Turbopack) | Express

Promise.race with 25 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Nitro 2.307s (-1.2%) 3.009s (~) 0.702s 10 1.00x
🐘 Postgres Express 2.329s (-2.1%) 3.011s (~) 0.681s 10 1.01x
🐘 Postgres Next.js (Turbopack) 2.399s 3.008s 0.610s 10 1.04x
💻 Local Nitro 2.929s (-16.2% 🟢) 3.341s (-16.7% 🟢) 0.412s 9 1.27x
💻 Local Next.js (Turbopack) 2.939s 3.454s 0.515s 9 1.27x
💻 Local Express 3.079s (-2.9%) 3.676s (-5.4% 🟢) 0.597s 9 1.33x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Next.js (Turbopack) 2.512s (+1.3%) 4.083s (+5.5% 🔺) 1.570s 8 1.00x
▲ Vercel Express 2.540s (-3.0%) 3.929s (-11.0% 🟢) 1.389s 8 1.01x
▲ Vercel Nitro ⚠️ missing - - - -

🔍 Observability: Next.js (Turbopack) | Express

Promise.race with 50 concurrent steps

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Nitro 3.462s (~) 4.009s (~) 0.547s 8 1.00x
🐘 Postgres Express 3.483s (~) 4.009s (~) 0.526s 8 1.01x
🐘 Postgres Next.js (Turbopack) 3.645s 4.012s 0.367s 8 1.05x
💻 Local Express 7.744s (-24.2% 🟢) 8.523s (-22.7% 🟢) 0.779s 4 2.24x
💻 Local Nitro 8.456s (-0.5%) 9.024s (~) 0.568s 4 2.44x
💻 Local Next.js (Turbopack) 9.403s 10.022s 0.619s 3 2.72x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Next.js (Turbopack) 3.099s (-10.5% 🟢) 4.917s (+2.1%) 1.818s 7 1.00x
▲ Vercel Express 3.247s (+10.7% 🔺) 5.692s (+35.1% 🔺) 2.445s 6 1.05x
▲ Vercel Nitro ⚠️ missing - - - -

🔍 Observability: Next.js (Turbopack) | Express

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 0.772s 1.006s 0.234s 60 1.00x
💻 Local Next.js (Turbopack) 0.835s 1.021s 0.187s 59 1.08x
🐘 Postgres Express 0.841s (-2.7%) 1.040s (+3.3%) 0.200s 58 1.09x
🐘 Postgres Nitro 0.852s (+1.9%) 1.023s (~) 0.171s 59 1.10x
💻 Local Express 1.030s (+1.6%) 1.912s (+12.5% 🔺) 0.882s 32 1.33x
💻 Local Nitro 1.033s (+40.2% 🔺) 1.941s (+93.3% 🔺) 0.908s 31 1.34x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Next.js (Turbopack) 9.614s (+7.6% 🔺) 11.444s (+7.3% 🔺) 1.830s 6 1.00x
▲ Vercel Express 9.862s (+7.3% 🔺) 11.628s (+5.9% 🔺) 1.766s 6 1.03x
▲ Vercel Nitro ⚠️ missing - - - -

🔍 Observability: Next.js (Turbopack) | Express

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 1.888s 2.075s 0.187s 44 1.00x
🐘 Postgres Express 1.959s (-9.2% 🟢) 2.257s (-24.2% 🟢) 0.299s 40 1.04x
🐘 Postgres Nitro 2.003s (+3.1%) 2.468s (+17.5% 🔺) 0.465s 37 1.06x
💻 Local Next.js (Turbopack) 2.662s 3.008s 0.346s 30 1.41x
💻 Local Nitro 3.046s (+18.6% 🔺) 3.759s (+18.2% 🔺) 0.713s 24 1.61x
💻 Local Express 3.053s (-1.2%) 3.759s (-6.3% 🟢) 0.706s 24 1.62x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 28.965s (+3.5%) 31.471s (+5.1% 🔺) 2.506s 3 1.00x
▲ Vercel Next.js (Turbopack) 29.604s (+3.4%) 31.700s (+4.4%) 2.096s 3 1.02x
▲ Vercel Nitro ⚠️ missing - - - -

🔍 Observability: Express | Next.js (Turbopack)

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 3.791s 4.010s 0.219s 30 1.00x
🐘 Postgres Express 4.087s (-5.3% 🟢) 4.891s (-2.4%) 0.804s 25 1.08x
🐘 Postgres Nitro 4.113s (+3.1%) 4.852s (+12.9% 🔺) 0.739s 25 1.09x
💻 Local Next.js (Turbopack) 8.546s 9.017s 0.471s 14 2.25x
💻 Local Nitro 8.873s (+15.0% 🔺) 9.231s (+12.4% 🔺) 0.358s 14 2.34x
💻 Local Express 9.338s (+1.4%) 9.787s (-2.3%) 0.449s 13 2.46x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 74.489s (-5.0% 🟢) 75.907s (-5.4% 🟢) 1.418s 2 1.00x
▲ Vercel Next.js (Turbopack) 78.319s (+1.8%) 79.913s (+1.5%) 1.595s 2 1.05x
▲ Vercel Nitro ⚠️ missing - - - -

🔍 Observability: Express | Next.js (Turbopack)

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 0.244s 1.007s 0.763s 60 1.00x
🐘 Postgres Nitro 0.282s (~) 1.007s (~) 0.725s 60 1.16x
🐘 Postgres Express 0.284s (-3.9%) 1.007s (~) 0.723s 60 1.17x
💻 Local Next.js (Turbopack) 0.535s 1.004s 0.469s 60 2.20x
💻 Local Nitro 0.572s (-13.8% 🟢) 1.004s (~) 0.432s 60 2.35x
💻 Local Express 0.586s (-1.8%) 1.022s (~) 0.436s 59 2.40x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 1.499s (-1.5%) 3.087s (~) 1.588s 20 1.00x
▲ Vercel Next.js (Turbopack) 1.687s (+16.4% 🔺) 3.180s (+5.7% 🔺) 1.493s 19 1.13x
▲ Vercel Nitro ⚠️ missing - - - -

🔍 Observability: Express | Next.js (Turbopack)

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 0.480s 1.006s 0.526s 90 1.00x
🐘 Postgres Nitro 0.481s (-1.5%) 1.007s (~) 0.526s 90 1.00x
🐘 Postgres Express 0.494s (-6.0% 🟢) 1.006s (~) 0.513s 90 1.03x
💻 Local Nitro 2.320s (-15.6% 🟢) 3.008s (-5.5% 🟢) 0.688s 30 4.83x
💻 Local Next.js (Turbopack) 2.519s 3.009s 0.490s 30 5.25x
💻 Local Express 2.537s (+1.0%) 3.176s (+5.6% 🔺) 0.639s 30 5.28x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 2.617s (-4.4%) 4.320s (-0.7%) 1.703s 21 1.00x
▲ Vercel Next.js (Turbopack) 3.065s (-8.9% 🟢) 4.598s (-4.8%) 1.533s 20 1.17x
▲ Vercel Nitro ⚠️ missing - - - -

🔍 Observability: Express | Next.js (Turbopack)

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 0.768s 1.006s 0.238s 120 1.00x
🐘 Postgres Nitro 0.783s (~) 1.007s (~) 0.224s 120 1.02x
🐘 Postgres Express 0.785s (-6.6% 🟢) 1.008s (-1.1%) 0.223s 120 1.02x
💻 Local Nitro 10.305s (-7.5% 🟢) 10.937s (-7.7% 🟢) 0.632s 11 13.42x
💻 Local Express 10.646s (-3.2%) 11.210s (-3.9%) 0.564s 11 13.86x
💻 Local Next.js (Turbopack) 10.703s 11.299s 0.596s 11 13.94x

▲ Production (Vercel)

World Framework Workflow Time Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 6.560s (-4.2%) 8.402s (-3.4%) 1.842s 15 1.00x
▲ Vercel Next.js (Turbopack) 21.686s (+199.6% 🔺) 23.323s (+170.7% 🔺) 1.638s 9 3.31x
▲ Vercel Nitro ⚠️ missing - - - -

🔍 Observability: Express | Next.js (Turbopack)

Stream Benchmarks (includes TTFB metrics)
workflow with stream

💻 Local Development

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
💻 Local 🥇 Next.js (Turbopack) 0.180s 1.003s 0.014s 1.020s 0.840s 10 1.00x
🐘 Postgres Express 0.193s (-10.3% 🟢) 0.996s (~) 0.001s (-17.6% 🟢) 1.010s (~) 0.817s 10 1.07x
🐘 Postgres Next.js (Turbopack) 0.196s 1.001s 0.002s 1.011s 0.816s 10 1.09x
🐘 Postgres Nitro 0.205s (+2.9%) 1.002s (~) 0.001s (-43.8% 🟢) 1.008s (~) 0.803s 10 1.14x
💻 Local Nitro 0.205s (+39.3% 🔺) 1.004s (~) 0.010s (+9.9% 🔺) 1.016s (~) 0.810s 10 1.14x
💻 Local Express 0.208s (~) 1.004s (~) 0.010s (-16.3% 🟢) 1.016s (~) 0.808s 10 1.16x

▲ Production (Vercel)

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 1.543s (+4.3%) 2.707s (-10.5% 🟢) 0.566s (+86.7% 🔺) 3.693s (-1.9%) 2.150s 10 1.00x
▲ Vercel Next.js (Turbopack) 1.603s (-1.8%) 3.009s (+1.2%) 0.381s (-11.4% 🟢) 3.803s (~) 2.200s 10 1.04x
▲ Vercel Nitro ⚠️ missing - - - - -

🔍 Observability: Express | Next.js (Turbopack)

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 0.610s 1.009s 0.005s 1.023s 0.413s 59 1.00x
🐘 Postgres Express 0.620s (-4.1%) 1.003s (~) 0.005s (+1.0%) 1.022s (~) 0.402s 59 1.02x
🐘 Postgres Nitro 0.626s (+3.5%) 1.003s (~) 0.004s (~) 1.021s (~) 0.395s 59 1.03x
💻 Local Next.js (Turbopack) 0.660s 1.011s 0.009s 1.022s 0.363s 59 1.08x
💻 Local Express 0.763s (+3.7%) 1.013s (~) 0.009s (-2.7%) 1.024s (~) 0.261s 59 1.25x
💻 Local Nitro 0.831s (+25.7% 🔺) 1.012s (~) 0.009s (-20.1% 🟢) 1.115s (+8.7% 🔺) 0.284s 54 1.36x

▲ Production (Vercel)

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 4.186s (-0.9%) 5.732s (-2.0%) 0.324s (+47.3% 🔺) 6.521s (~) 2.335s 10 1.00x
▲ Vercel Next.js (Turbopack) 4.265s (+3.8%) 5.776s (+3.5%) 0.250s (-65.5% 🟢) 6.473s (-3.1%) 2.208s 10 1.02x
▲ Vercel Nitro ⚠️ missing - - - - -

🔍 Observability: Express | Next.js (Turbopack)

10 parallel streams (1MB each)

💻 Local Development

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Next.js (Turbopack) 0.914s 1.163s 0.000s 1.178s 0.264s 51 1.00x
🐘 Postgres Express 0.948s (-4.5%) 1.169s (-12.4% 🟢) 0.000s (+29.4% 🔺) 1.184s (-13.6% 🟢) 0.236s 51 1.04x
🐘 Postgres Nitro 0.948s (~) 1.086s (-5.3% 🟢) 0.000s (-68.5% 🟢) 1.109s (-4.5%) 0.161s 55 1.04x
💻 Local Nitro 1.197s (-9.7% 🟢) 2.020s (~) 0.000s (-58.8% 🟢) 2.022s (~) 0.825s 30 1.31x
💻 Local Express 1.252s (-1.8%) 2.022s (~) 0.000s (~) 2.025s (~) 0.773s 30 1.37x
💻 Local Next.js (Turbopack) 1.274s 2.020s 0.000s 2.024s 0.749s 30 1.39x

▲ Production (Vercel)

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 2.592s (-1.9%) 3.648s (-1.8%) 0.000s (-50.0% 🟢) 4.075s (-1.6%) 1.483s 15 1.00x
▲ Vercel Next.js (Turbopack) 3.585s (+10.2% 🔺) 4.824s (+10.0% 🔺) 0.000s (-63.9% 🟢) 5.310s (+11.3% 🔺) 1.725s 12 1.38x
▲ Vercel Nitro ⚠️ missing - - - - -

🔍 Observability: Express | Next.js (Turbopack)

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

💻 Local Development

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
🐘 Postgres 🥇 Express 1.786s (~) 2.221s (+3.7%) 0.000s (+Infinity% 🔺) 2.234s (+3.8%) 0.448s 27 1.00x
🐘 Postgres Nitro 1.799s (+0.9%) 2.100s (~) 0.000s (-100.0% 🟢) 2.162s (+2.4%) 0.363s 29 1.01x
🐘 Postgres Next.js (Turbopack) 1.835s 2.182s 0.000s 2.199s 0.365s 28 1.03x
💻 Local Nitro 3.430s (-13.1% 🟢) 4.100s (-9.6% 🟢) 0.000s (-49.1% 🟢) 4.102s (-9.6% 🟢) 0.672s 15 1.92x
💻 Local Express 3.588s (-2.0%) 4.101s (-1.6%) 0.000s (-45.5% 🟢) 4.104s (-1.6%) 0.516s 15 2.01x
💻 Local Next.js (Turbopack) 3.664s 4.166s 0.000s 4.171s 0.507s 15 2.05x

▲ Production (Vercel)

World Framework Workflow Time TTFB Slurp Wall Time Overhead Samples vs Fastest
▲ Vercel 🥇 Express 3.571s (+5.2% 🔺) 4.869s (~) 0.000s (-66.7% 🟢) 5.294s (~) 1.724s 12 1.00x
▲ Vercel Next.js (Turbopack) 3.956s (-9.1% 🟢) 5.217s (-6.5% 🟢) 0.000s (-66.7% 🟢) 5.733s (-4.1%) 1.777s 11 1.11x
▲ Vercel Nitro ⚠️ missing - - - - -

🔍 Observability: Express | Next.js (Turbopack)

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World 🥇 Fastest Framework Wins
💻 Local Next.js (Turbopack) 10/21
🐘 Postgres Next.js (Turbopack) 15/21
▲ Vercel Express 15/21
Fastest World by Framework

Winner determined by most benchmark wins

Framework 🥇 Fastest World Wins
Express 🐘 Postgres 17/21
Next.js (Turbopack) 🐘 Postgres 16/21
Nitro 🐘 Postgres 19/21
Column Definitions
  • Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
  • TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
  • Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
  • Wall Time: Total testbench time (trigger workflow + poll for result)
  • Overhead: Testbench overhead (Wall Time - Workflow Time)
  • Samples: Number of benchmark iterations run
  • vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

  • 💻 Local: In-memory filesystem world (local development)
  • 🐘 Postgres: PostgreSQL database world (local development)
  • ▲ Vercel: Vercel production/preview deployment
  • 🌐 Turso: Community world (local development)
  • 🌐 MongoDB: Community world (local development)
  • 🌐 Redis: Community world (local development)
  • 🌐 Jazz: Community world (local development)

📋 View full workflow run

❌ Some benchmark jobs failed:

  • Local: success
  • Postgres: success
  • Vercel: failure

Check the workflow run for details.

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🧪 E2E Test Results

❌ Some tests failed

Summary

Passed Failed Skipped Total
✅ ▲ Vercel Production 912 0 67 979
✅ 💻 Local Development 886 0 182 1068
✅ 📦 Local Production 886 0 182 1068
✅ 🐘 Local Postgres 886 0 182 1068
✅ 🪟 Windows 81 0 8 89
❌ 🌍 Community Worlds 131 73 24 228
✅ 📋 Other 225 0 42 267
Total 4007 73 687 4767

❌ Failed Tests

🌍 Community Worlds (73 failed)

mongodb (7 failed):

  • hookWorkflow is not resumable via public webhook endpoint | wrun_01KNT0HZ9B6Y98BJEM64R71N80
  • webhookWorkflow | wrun_01KNT0J80CG55VGZFNPMPB3Y0W
  • fetchWorkflow | wrun_01KNT0P3TZK9FCV7AGEMXT7ZHP
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01KNT0TC7WYX13KERZP85SV5AX
  • health check (queue-based) - workflow and step endpoints respond to health check messages
  • health check (CLI) - workflow health command reports healthy endpoints
  • resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01KNT10QBXXAGYHJMPMX29EBMC

redis (7 failed):

  • hookWorkflow is not resumable via public webhook endpoint | wrun_01KNT0HZ9B6Y98BJEM64R71N80
  • webhookWorkflow | wrun_01KNT0J80CG55VGZFNPMPB3Y0W
  • fetchWorkflow | wrun_01KNT0P3TZK9FCV7AGEMXT7ZHP
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01KNT0TC7WYX13KERZP85SV5AX
  • health check (queue-based) - workflow and step endpoints respond to health check messages
  • health check (CLI) - workflow health command reports healthy endpoints
  • resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01KNT10QBXXAGYHJMPMX29EBMC

turso (59 failed):

  • addTenWorkflow | wrun_01KNT0GRM7Y4V1G45JEP06DWPJ
  • addTenWorkflow | wrun_01KNT0GRM7Y4V1G45JEP06DWPJ
  • wellKnownAgentWorkflow (.well-known/agent) | wrun_01KNT0J6PM369QK0KN896NBBN2
  • should work with react rendering in step
  • promiseAllWorkflow | wrun_01KNT0GZ545ZTNR9MQX3WDX0DE
  • promiseRaceWorkflow | wrun_01KNT0H5RYER344E1RFFB0FHRD
  • promiseAnyWorkflow | wrun_01KNT0H7TF7AQV1G6QQ7S4XATS
  • importedStepOnlyWorkflow | wrun_01KNT0JJ3T16V3R6SHMY70AQGC
  • hookWorkflow | wrun_01KNT0HKSVANESFEH01PK6YNN9
  • hookWorkflow is not resumable via public webhook endpoint | wrun_01KNT0HZ9B6Y98BJEM64R71N80
  • webhookWorkflow | wrun_01KNT0J80CG55VGZFNPMPB3Y0W
  • sleepingWorkflow | wrun_01KNT0JE595NBHPBGFQYWQW1YM
  • parallelSleepWorkflow | wrun_01KNT0JVDF1RFJFDJZKBQ6JR8J
  • nullByteWorkflow | wrun_01KNT0JYMTTH2YW8G70FG58C12
  • workflowAndStepMetadataWorkflow | wrun_01KNT0K0XAJZ4334X1A4G6KNDF
  • fetchWorkflow | wrun_01KNT0P3TZK9FCV7AGEMXT7ZHP
  • promiseRaceStressTestWorkflow | wrun_01KNT0P72D23118YH962Q7TJ5G
  • error handling error propagation workflow errors nested function calls preserve message and stack trace
  • error handling error propagation workflow errors cross-file imports preserve message and stack trace
  • error handling error propagation step errors basic step error preserves message and stack trace
  • error handling error propagation step errors cross-file step error preserves message and function names in stack
  • error handling retry behavior regular Error retries until success
  • error handling retry behavior FatalError fails immediately without retries
  • error handling retry behavior RetryableError respects custom retryAfter delay
  • error handling retry behavior maxRetries=0 disables retries
  • error handling catchability FatalError can be caught and detected with FatalError.is()
  • error handling not registered WorkflowNotRegisteredError fails the run when workflow does not exist
  • error handling not registered StepNotRegisteredError fails the step but workflow can catch it
  • error handling not registered StepNotRegisteredError fails the run when not caught in workflow
  • hookCleanupTestWorkflow - hook token reuse after workflow completion | wrun_01KNT0SR3GGS30J7XJHXET60TR
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01KNT0TC7WYX13KERZP85SV5AX
  • hookDisposeTestWorkflow - hook token reuse after explicit disposal while workflow still running | wrun_01KNT0V1C6V8161X80W1KAR437
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars) | wrun_01KNT0VPAJCK6DNR6TT4P50Z0Q
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument | wrun_01KNT0W34F0XPRJFQZ11NJGEVW
  • closureVariableWorkflow - nested step functions with closure variables | wrun_01KNT0W8PQPYTTRQKE2PHWC10F
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step | wrun_01KNT0WAP8NN3VWC5KMZ2BY23H
  • health check (queue-based) - workflow and step endpoints respond to health check messages
  • health check (CLI) - workflow health command reports healthy endpoints
  • pathsAliasWorkflow - TypeScript path aliases resolve correctly | wrun_01KNT0WRPAREX1C27WYJ1KWNBF
  • Calculator.calculate - static workflow method using static step methods from another class | wrun_01KNT0WYHHK5YE6PYHFE9VS85N
  • AllInOneService.processNumber - static workflow method using sibling static step methods | wrun_01KNT0X539RPCP0ETF1Z3NGXEE
  • ChainableService.processWithThis - static step methods using this to reference the class | wrun_01KNT0XBTAE2XX6TH309T4YXQ0
  • thisSerializationWorkflow - step function invoked with .call() and .apply() | wrun_01KNT0XJJNBRPJYDPS9H6VRZS7
  • customSerializationWorkflow - custom class serialization with WORKFLOW_SERIALIZE/WORKFLOW_DESERIALIZE | wrun_01KNT0XRYMD7KYT8H0KJ7GJ9TX
  • instanceMethodStepWorkflow - instance methods with "use step" directive | wrun_01KNT0XZC5ZQ6QJPDR1Y6D6574
  • crossContextSerdeWorkflow - classes defined in step code are deserializable in workflow context | wrun_01KNT0YA7KQRMF3K687N17GSVA
  • stepFunctionAsStartArgWorkflow - step function reference passed as start() argument | wrun_01KNT0YHW43ZVP6TQZRKSM34MD
  • cancelRun - cancelling a running workflow | wrun_01KNT0YSHSDYVB0N6K04VCGVNW
  • cancelRun via CLI - cancelling a running workflow | wrun_01KNT0Z2HT99G685XM4FESC7HW
  • pages router addTenWorkflow via pages router
  • pages router promiseAllWorkflow via pages router
  • pages router sleepingWorkflow via pages router
  • hookWithSleepWorkflow - hook payloads delivered correctly with concurrent sleep | wrun_01KNT0ZEETG0N23WXRQQ3934NC
  • sleepInLoopWorkflow - sleep inside loop with steps actually delays each iteration | wrun_01KNT102DT2EXK24ETV9VNV308
  • sleepWithSequentialStepsWorkflow - sequential steps work with concurrent sleep (control) | wrun_01KNT10CKGZWCDN64460YDRX5G
  • importMetaUrlWorkflow - import.meta.url is available in step bundles | wrun_01KNT10K9HHHRDNJCP8XGMWM8N
  • metadataFromHelperWorkflow - getWorkflowMetadata/getStepMetadata work from module-level helper (#1577) | wrun_01KNT10NAA9HEZ9GTCXHMBAVP2
  • resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01KNT10QBXXAGYHJMPMX29EBMC
  • getterStepWorkflow - getter functions with "use step" directive | wrun_01KNT10TKP7ZKK257SQ1E1003Q

Details by Category

✅ ▲ Vercel Production
App Passed Failed Skipped
✅ astro 82 0 7
✅ example 82 0 7
✅ express 82 0 7
✅ fastify 82 0 7
✅ hono 82 0 7
✅ nextjs-turbopack 87 0 2
✅ nextjs-webpack 87 0 2
✅ nitro 82 0 7
✅ nuxt 82 0 7
✅ sveltekit 82 0 7
✅ vite 82 0 7
✅ 💻 Local Development
App Passed Failed Skipped
✅ astro-stable 75 0 14
✅ express-stable 75 0 14
✅ fastify-stable 75 0 14
✅ hono-stable 75 0 14
✅ nextjs-turbopack-canary 62 0 27
✅ nextjs-turbopack-stable 81 0 8
✅ nextjs-webpack-canary 62 0 27
✅ nextjs-webpack-stable 81 0 8
✅ nitro-stable 75 0 14
✅ nuxt-stable 75 0 14
✅ sveltekit-stable 75 0 14
✅ vite-stable 75 0 14
✅ 📦 Local Production
App Passed Failed Skipped
✅ astro-stable 75 0 14
✅ express-stable 75 0 14
✅ fastify-stable 75 0 14
✅ hono-stable 75 0 14
✅ nextjs-turbopack-canary 62 0 27
✅ nextjs-turbopack-stable 81 0 8
✅ nextjs-webpack-canary 62 0 27
✅ nextjs-webpack-stable 81 0 8
✅ nitro-stable 75 0 14
✅ nuxt-stable 75 0 14
✅ sveltekit-stable 75 0 14
✅ vite-stable 75 0 14
✅ 🐘 Local Postgres
App Passed Failed Skipped
✅ astro-stable 75 0 14
✅ express-stable 75 0 14
✅ fastify-stable 75 0 14
✅ hono-stable 75 0 14
✅ nextjs-turbopack-canary 62 0 27
✅ nextjs-turbopack-stable 81 0 8
✅ nextjs-webpack-canary 62 0 27
✅ nextjs-webpack-stable 81 0 8
✅ nitro-stable 75 0 14
✅ nuxt-stable 75 0 14
✅ sveltekit-stable 75 0 14
✅ vite-stable 75 0 14
✅ 🪟 Windows
App Passed Failed Skipped
✅ nextjs-turbopack 81 0 8
❌ 🌍 Community Worlds
App Passed Failed Skipped
✅ mongodb-dev 6 0 0
❌ mongodb 55 7 8
✅ redis-dev 6 0 0
❌ redis 55 7 8
✅ turso-dev 6 0 0
❌ turso 3 59 8
✅ 📋 Other
App Passed Failed Skipped
✅ e2e-local-dev-nest-stable 75 0 14
✅ e2e-local-postgres-nest-stable 75 0 14
✅ e2e-local-prod-nest-stable 75 0 14

📋 View full workflow run

TooTallNate
TooTallNate requested changes Apr 9, 2026
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The core change is sound — removing eager input-graph discovery in deferred mode and relying entirely on loader/socket-driven discovery is the right direction. The route stub wait mechanism is well-designed. However, there are a couple of issues to address.

What I verified

Core removal: loadDiscoveredEntriesFromInputGraph() and the overridden getInputFiles() (which filtered to App/Pages Router entrypoints) are cleanly removed. The bootstrap() method no longer calls discovery — entries arrive via loader → socket → onFileDiscovered.

Route stub wait protocol: When the loader encounters a stub file (containing ROUTE_STUB_FILE_MARKER), it opens a dedicated socket, sends trigger-build, and waits for build-complete. This is correct:

  • createSocketConnection has a 1s connect timeout
  • waitForDeferredBuildComplete has a 120s timeout
  • ensureDeferredRouteStubBuildAndWait deduplicates concurrent waits via pendingDeferredRouteStubBuildPromise
  • The socket server's buildTriggered flag + immediate build-complete for late connectors prevents missed notifications

Loader deduplication: updateDiscoveredPatternState tracks per-file {hasWorkflow, hasStep, hasSerde} and only notifies the socket server when patterns change. This avoids unnecessary rebuild triggers during HMR when files are re-processed without pattern changes.

Manifest step resolution: collectManifestStepSourceFiles resolves relative step entries against multiple base dirs (projectRoot, workingDir, monorepo root). normalizeDiscoveredFilePath now uses realpathSync to resolve symlinks — important for pnpm monorepos.

Build ordering change: Steps build now happens after workflows build (buildWorkflowsFunction → buildStepsFunction), with the workflow manifest passed as additionalStepSourceManifest. This ensures transitive step files discovered by the workflow build are included in the steps bundle.

Blocking (2)

  1. Socket credential resolution order flipped — see inline comment
  2. getGeneratedRouteState uses file size as a heuristic — see inline comment

TooTallNate
TooTallNate approved these changes Apr 9, 2026
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Both blocking issues from my previous review are resolved in eb1fa370, plus all non-blocking suggestions were addressed in follow-up commits.

Original Issue Status Fix
Socket credential resolution order flipped (file ?? env) Fixed (eb1fa370) Restored to env ?? file — env vars checked first (always current), file-based fallback for workers
getGeneratedRouteState file size heuristic Fixed (eb1fa370) Replaced with bounded 4KB read() — always checks for ROUTE_STUB_FILE_MARKER but limits I/O. Better than my suggestion of reading the whole file
process.cwd() may differ from builder's workingDir Fixed (59763fd6) Checks WORKFLOW_PROJECT_ROOT first, falls back to process.cwd()
getManifestStepResolveBaseDirs Windows safety Fixed (d25f9fd4) Simplified to add every ancestor dir, normalizing via addResolveBaseDir helper

LGTM.

@workflow-devkit-release-bot workflow-devkit-release-bot bot mentioned this pull request Apr 9, 2026
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@TooTallNate TooTallNate mentioned this pull request Apr 11, 2026
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@ijjk @TooTallNate