Remove SvelteKit prepare lifecycle hook by NathanColosimo · Pull Request #2821 · vercel/workflow

NathanColosimo · 2026-07-08T17:41:54Z

Problem

SvelteKit 2.62+ loads the Vite config during svelte-kit sync. Because the workbench ran sync from prepare, pnpm install imported the Workflow plugin and started compilation before workspace build artifacts such as the SWC wasm were available, causing CI installs to hang.

Solution

Remove the redundant prepare hook. SvelteKit still synchronizes during dev and build, and the check script runs svelte-kit sync explicitly.

Verification

pnpm install --frozen-lockfile
pnpm --dir workbench/sveltekit check
pnpm --dir workbench/sveltekit build

changeset-bot · 2026-07-08T17:42:00Z

⚠️ No Changeset found

Latest commit: 91b4893

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

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vercel · 2026-07-08T17:42:07Z

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

Project	Deployment	Actions	Updated (UTC)
example-nextjs-workflow-turbopack	Ready	Preview, Comment	Jul 8, 2026 6:12pm
example-nextjs-workflow-webpack	Ready	Preview, Comment	Jul 8, 2026 6:12pm
example-workflow	Ready	Preview, Comment	Jul 8, 2026 6:12pm
workbench-astro-workflow	Ready	Preview, Comment	Jul 8, 2026 6:12pm
workbench-express-workflow	Ready	Preview, Comment	Jul 8, 2026 6:12pm
workbench-fastify-workflow	Ready	Preview, Comment	Jul 8, 2026 6:12pm
workbench-hono-workflow	Ready	Preview, Comment	Jul 8, 2026 6:12pm
workbench-nitro-workflow	Ready	Preview, Comment	Jul 8, 2026 6:12pm
workbench-nuxt-workflow	Ready	Preview, Comment	Jul 8, 2026 6:12pm
workbench-sveltekit-workflow	Ready	Preview, Comment	Jul 8, 2026 6:12pm
workbench-tanstack-start-workflow	Ready	Preview, Comment	Jul 8, 2026 6:12pm
workbench-vite-workflow	Ready	Preview, Comment	Jul 8, 2026 6:12pm
workflow-docs	Ready	Preview, Comment, Open in v0	Jul 8, 2026 6:12pm
workflow-swc-playground	Ready	Preview, Comment	Jul 8, 2026 6:12pm
workflow-tarballs	Ready	Preview, Comment	Jul 8, 2026 6:12pm
workflow-web	Ready	Preview, Comment	Jul 8, 2026 6:12pm

github-actions · 2026-07-08T17:42:11Z

🧪 E2E Test Results

✅ All tests passed

Summary

	Passed	Skipped	Total
✅ ▲ Vercel Production	1453	230	1683
✅ 💻 Local Development	1617	219	1836
✅ 📦 Local Production	1617	219	1836
✅ 🐘 Local Postgres	1617	219	1836
✅ 🪟 Windows	153	0	153
✅ 📋 Other	894	177	1071
Total	7351	1064	8415

Details by Category

✅ ▲ Vercel Production

App	Passed	Skipped
✅ astro	126	27
✅ example	126	27
✅ express	126	27
✅ fastify	126	27
✅ hono	126	27
✅ nextjs-turbopack	150	3
✅ nextjs-webpack	150	3
✅ nitro	126	27
✅ nuxt	126	27
✅ sveltekit	145	8
✅ vite	126	27

✅ 💻 Local Development

App	Passed	Skipped
✅ astro-stable	128	25
✅ express-stable	128	25
✅ fastify-stable	128	25
✅ hono-stable	128	25
✅ nextjs-turbopack-canary	134	19
✅ nextjs-turbopack-stable	153	0
✅ nextjs-webpack-canary	134	19
✅ nextjs-webpack-stable	153	0
✅ nitro-stable	128	25
✅ nuxt-stable	128	25
✅ sveltekit-stable	147	6
✅ vite-stable	128	25

✅ 📦 Local Production

App	Passed	Skipped
✅ astro-stable	128	25
✅ express-stable	128	25
✅ fastify-stable	128	25
✅ hono-stable	128	25
✅ nextjs-turbopack-canary	134	19
✅ nextjs-turbopack-stable	153	0
✅ nextjs-webpack-canary	134	19
✅ nextjs-webpack-stable	153	0
✅ nitro-stable	128	25
✅ nuxt-stable	128	25
✅ sveltekit-stable	147	6
✅ vite-stable	128	25

✅ 🐘 Local Postgres

App	Passed	Skipped
✅ astro-stable	128	25
✅ express-stable	128	25
✅ fastify-stable	128	25
✅ hono-stable	128	25
✅ nextjs-turbopack-canary	134	19
✅ nextjs-turbopack-stable	153	0
✅ nextjs-webpack-canary	134	19
✅ nextjs-webpack-stable	153	0
✅ nitro-stable	128	25
✅ nuxt-stable	128	25
✅ sveltekit-stable	147	6
✅ vite-stable	128	25

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack	153	0	0

✅ 📋 Other

App	Passed	Skipped
✅ e2e-local-dev-nest-stable	128	25
✅ e2e-local-dev-tanstack-start-	128	25
✅ e2e-local-postgres-nest-stable	128	25
✅ e2e-local-postgres-tanstack-start-	128	25
✅ e2e-local-prod-nest-stable	128	25
✅ e2e-local-prod-tanstack-start-	128	25
✅ e2e-vercel-prod-tanstack-start	126	27

📋 View full workflow run

github-actions · 2026-07-08T17:42:12Z

📊 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	🥇 Express	0.047s (+4.3%)	1.006s (~)	0.960s	10	1.00x
💻 Local	Nitro	0.049s (+5.2% 🔺)	1.006s (~)	0.958s	10	1.05x
💻 Local	Next.js (Turbopack)	0.054s (+1.7%)	1.006s (~)	0.952s	10	1.16x
🐘 Postgres	Nitro	0.065s (-0.8%)	1.014s (~)	0.949s	10	1.39x
🐘 Postgres	Express	⚠️ missing	-	-	-	-
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	0.211s (-6.1% 🟢)	2.041s (~)	1.830s	10	1.00x
▲ Vercel	Nitro	0.280s (+48.8% 🔺)	2.186s (+7.7% 🔺)	1.906s	10	1.32x
▲ Vercel	Next.js (Turbopack)	0.630s (+159.0% 🔺)	2.176s (-8.5% 🟢)	1.546s	10	2.98x

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

workflow with 1 step

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.088s (+0.9%)	2.007s (~)	0.919s	10	1.00x
💻 Local	Express	1.091s (+0.5%)	2.007s (~)	0.916s	10	1.00x
💻 Local	Next.js (Turbopack)	1.093s (~)	2.006s (~)	0.913s	10	1.00x
🐘 Postgres	Nitro	1.103s (~)	2.011s (~)	0.908s	10	1.01x
🐘 Postgres	Express	⚠️ missing	-	-	-	-
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.410s (+3.6%)	2.811s (-6.8% 🟢)	1.401s	10	1.00x
▲ Vercel	Express	1.439s (+1.5%)	2.811s (~)	1.372s	10	1.02x
▲ Vercel	Next.js (Turbopack)	2.386s (+1.7%)	3.936s (+9.6% 🔺)	1.550s	10	1.69x

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

workflow with 10 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	10.481s (~)	11.023s (~)	0.542s	3	1.00x
🐘 Postgres	Nitro	10.493s (~)	11.016s (~)	0.523s	3	1.00x
💻 Local	Nitro	10.494s (~)	11.024s (~)	0.530s	3	1.00x
💻 Local	Next.js (Turbopack)	10.504s (~)	11.024s (~)	0.520s	3	1.00x
🐘 Postgres	Express	⚠️ missing	-	-	-	-
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	11.947s (+2.3%)	13.951s (~)	2.004s	3	1.00x
▲ Vercel	Nitro	12.048s (+3.1%)	14.003s (+10.3% 🔺)	1.955s	3	1.01x
▲ Vercel	Next.js (Turbopack)	13.088s (+1.3%)	15.184s (+7.1% 🔺)	2.097s	2	1.10x

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

workflow with 25 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	13.697s (~)	14.028s (~)	0.331s	5	1.00x
💻 Local	Next.js (Turbopack)	13.765s (~)	14.027s (~)	0.262s	5	1.00x
💻 Local	Nitro	13.802s (+0.7%)	14.029s (~)	0.227s	5	1.01x
🐘 Postgres	Nitro	13.844s (+1.0%)	14.017s (~)	0.173s	5	1.01x
🐘 Postgres	Express	⚠️ missing	-	-	-	-
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	16.730s (~)	18.757s (-1.0%)	2.028s	4	1.00x
▲ Vercel	Nitro	17.329s (+7.1% 🔺)	19.500s (+11.8% 🔺)	2.172s	4	1.04x
▲ Vercel	Next.js (Turbopack)	17.915s (~)	20.062s (+1.5%)	2.147s	4	1.07x

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

workflow with 50 sequential steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Express	12.290s (+0.6%)	13.026s (~)	0.736s	7	1.00x
💻 Local	Nitro	12.321s (+0.8%)	13.026s (~)	0.705s	7	1.00x
🐘 Postgres	Nitro	12.329s (~)	13.018s (~)	0.688s	7	1.00x
💻 Local	Next.js (Turbopack)	12.374s (+1.1%)	13.025s (~)	0.651s	7	1.01x
🐘 Postgres	Express	⚠️ missing	-	-	-	-
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	17.712s (+2.4%)	19.860s (+3.5%)	2.148s	5	1.00x
▲ Vercel	Nitro	18.356s (+7.5% 🔺)	20.602s (+9.7% 🔺)	2.246s	5	1.04x
▲ Vercel	Next.js (Turbopack)	20.467s (+3.9%)	22.487s (+3.7%)	2.020s	5	1.16x

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

Promise.all with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.188s (~)	2.007s (~)	0.820s	15	1.00x
💻 Local	Nitro	1.416s (+0.6%)	2.007s (~)	0.591s	15	1.19x
💻 Local	Next.js (Turbopack)	1.442s (+2.5%)	2.006s (~)	0.564s	15	1.21x
💻 Local	Express	1.443s (~)	2.007s (~)	0.563s	15	1.22x
🐘 Postgres	Express	⚠️ missing	-	-	-	-
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.468s (+7.9% 🔺)	4.345s (+20.6% 🔺)	1.878s	7	1.00x
▲ Vercel	Express	2.518s (+10.8% 🔺)	4.190s (+7.4% 🔺)	1.672s	8	1.02x
▲ Vercel	Next.js (Turbopack)	6.258s (+113.0% 🔺)	7.975s (+71.9% 🔺)	1.718s	4	2.54x

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

Promise.all with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.342s (-4.1%)	2.509s (+1.6%)	1.168s	12	1.00x
💻 Local	Next.js (Turbopack)	2.298s (-7.7% 🟢)	3.009s (-3.2%)	0.711s	10	1.71x
💻 Local	Nitro	2.350s (+1.3%)	3.009s (~)	0.658s	10	1.75x
💻 Local	Express	2.539s (-4.4%)	3.110s (~)	0.571s	10	1.89x
🐘 Postgres	Express	⚠️ missing	-	-	-	-
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.426s (-4.1%)	4.063s (+14.2% 🔺)	1.637s	8	1.00x
▲ Vercel	Express	2.914s (+11.8% 🔺)	4.792s (+16.4% 🔺)	1.878s	7	1.20x
▲ Vercel	Next.js (Turbopack)	5.001s (+50.2% 🔺)	6.964s (+41.9% 🔺)	1.963s	5	2.06x

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

Promise.all with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.605s (-1.4%)	4.137s (~)	2.532s	8	1.00x
💻 Local	Next.js (Turbopack)	3.976s (-15.4% 🟢)	5.014s (-9.1% 🟢)	1.038s	6	2.48x
💻 Local	Nitro	4.164s (-3.0%)	5.182s (+6.4% 🔺)	1.018s	6	2.59x
💻 Local	Express	4.173s (-5.5% 🟢)	5.180s (~)	1.007s	6	2.60x
🐘 Postgres	Express	⚠️ missing	-	-	-	-
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.851s (+0.8%)	4.577s (+1.5%)	1.726s	7	1.00x
▲ Vercel	Express	3.675s (+25.9% 🔺)	5.450s (+24.1% 🔺)	1.775s	6	1.29x
▲ Vercel	Next.js (Turbopack)	4.680s (+18.4% 🔺)	6.613s (+14.6% 🔺)	1.933s	5	1.64x

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

Promise.race with 10 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.199s (~)	2.007s (~)	0.808s	15	1.00x
💻 Local	Express	1.450s (~)	2.007s (~)	0.557s	15	1.21x
💻 Local	Next.js (Turbopack)	1.461s (-2.6%)	2.007s (~)	0.546s	15	1.22x
💻 Local	Nitro	1.475s (+4.3%)	2.007s (~)	0.532s	15	1.23x
🐘 Postgres	Express	⚠️ missing	-	-	-	-
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.098s (+10.4% 🔺)	3.818s (+14.1% 🔺)	1.720s	8	1.00x
▲ Vercel	Express	2.134s (+10.4% 🔺)	3.913s (+7.0% 🔺)	1.779s	8	1.02x
▲ Vercel	Next.js (Turbopack)	3.277s (+10.2% 🔺)	5.159s (+9.7% 🔺)	1.882s	6	1.56x

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

Promise.race with 25 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.462s (+10.9% 🔺)	2.510s (+25.0% 🔺)	1.047s	12	1.00x
💻 Local	Nitro	2.472s (+1.2%)	3.008s (~)	0.537s	10	1.69x
💻 Local	Express	2.627s (+5.6% 🔺)	3.110s (+3.3%)	0.482s	10	1.80x
💻 Local	Next.js (Turbopack)	2.708s (-3.6%)	3.210s (-4.0%)	0.502s	10	1.85x
🐘 Postgres	Express	⚠️ missing	-	-	-	-
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.517s (+14.6% 🔺)	4.320s (+23.2% 🔺)	1.803s	7	1.00x
▲ Vercel	Express	2.677s (-13.7% 🟢)	4.575s (~)	1.898s	7	1.06x
▲ Vercel	Next.js (Turbopack)	3.861s (+22.4% 🔺)	5.332s (+17.5% 🔺)	1.471s	6	1.53x

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

Promise.race with 50 concurrent steps

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.668s (+2.0%)	4.589s (+6.7% 🔺)	2.921s	7	1.00x
💻 Local	Next.js (Turbopack)	5.890s (+9.0% 🔺)	6.215s (+3.4%)	0.326s	5	3.53x
💻 Local	Express	5.943s (+66.6% 🔺)	6.414s (+28.0% 🔺)	0.471s	5	3.56x
💻 Local	Nitro	6.046s (+9.5% 🔺)	6.620s (+10.0% 🔺)	0.574s	5	3.63x
🐘 Postgres	Express	⚠️ missing	-	-	-	-
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.455s (+35.6% 🔺)	5.558s (+46.0% 🔺)	2.103s	6	1.00x
▲ Vercel	Express	3.893s (+46.2% 🔺)	6.280s (+41.6% 🔺)	2.387s	6	1.13x
▲ Vercel	Next.js (Turbopack)	4.794s (+6.3% 🔺)	6.647s (+8.2% 🔺)	1.854s	5	1.39x

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

workflow with 10 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.582s (-3.2%)	1.023s (~)	0.441s	59	1.00x
💻 Local	Express	0.632s (+4.4%)	1.022s (+1.7%)	0.390s	59	1.09x
💻 Local	Next.js (Turbopack)	0.634s (+5.9% 🔺)	1.005s (~)	0.371s	60	1.09x
💻 Local	Nitro	0.651s (+11.5% 🔺)	1.005s (~)	0.354s	60	1.12x
🐘 Postgres	Express	⚠️ missing	-	-	-	-
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	2.619s (+0.5%)	4.361s (+8.7% 🔺)	1.742s	14	1.00x
▲ Vercel	Express	2.680s (+7.7% 🔺)	4.398s (+10.8% 🔺)	1.718s	14	1.02x
▲ Vercel	Next.js (Turbopack)	4.718s (+16.4% 🔺)	6.698s (+18.3% 🔺)	1.979s	10	1.80x

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

workflow with 25 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	1.432s (+2.8%)	2.030s (~)	0.598s	45	1.00x
💻 Local	Express	1.554s (+4.1%)	2.007s (~)	0.452s	45	1.09x
💻 Local	Next.js (Turbopack)	1.591s (+1.1%)	2.006s (~)	0.415s	45	1.11x
💻 Local	Nitro	1.612s (+11.4% 🔺)	2.007s (~)	0.395s	45	1.13x
🐘 Postgres	Express	⚠️ missing	-	-	-	-
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	6.154s (+5.7% 🔺)	7.932s (+6.0% 🔺)	1.778s	12	1.00x
▲ Vercel	Nitro	6.364s (+9.0% 🔺)	8.147s (+10.4% 🔺)	1.783s	12	1.03x
▲ Vercel	Next.js (Turbopack)	9.697s (+17.5% 🔺)	11.486s (+19.8% 🔺)	1.789s	8	1.58x

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

workflow with 50 sequential data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	2.728s (-4.2%)	3.058s (-5.0% 🟢)	0.330s	40	1.00x
💻 Local	Express	3.457s (+3.7%)	4.076s (+1.7%)	0.620s	30	1.27x
💻 Local	Next.js (Turbopack)	3.470s (+1.1%)	4.010s (~)	0.540s	30	1.27x
💻 Local	Nitro	3.582s (+12.7% 🔺)	4.077s (+3.3%)	0.495s	30	1.31x
🐘 Postgres	Express	⚠️ missing	-	-	-	-
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	13.016s (+13.3% 🔺)	14.995s (+16.0% 🔺)	1.979s	9	1.00x
▲ Vercel	Express	13.782s (+17.9% 🔺)	16.010s (+15.7% 🔺)	2.227s	9	1.06x
▲ Vercel	Next.js (Turbopack)	17.450s (+1.8%)	19.654s (+5.1% 🔺)	2.204s	7	1.34x

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

workflow with 10 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.231s (+4.5%)	1.006s (~)	0.775s	60	1.00x
💻 Local	Nitro	0.555s (+8.3% 🔺)	1.005s (~)	0.450s	60	2.40x
💻 Local	Express	0.575s (+11.3% 🔺)	1.022s (+1.7%)	0.447s	59	2.49x
💻 Local	Next.js (Turbopack)	0.659s (+2.6%)	1.022s (~)	0.363s	59	2.85x
🐘 Postgres	Express	⚠️ missing	-	-	-	-
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.122s (+2.4%)	2.899s (+20.7% 🔺)	1.777s	21	1.00x
▲ Vercel	Express	1.187s (+5.4% 🔺)	2.756s (+4.9%)	1.569s	22	1.06x
▲ Vercel	Next.js (Turbopack)	2.459s (+25.6% 🔺)	3.888s (+15.8% 🔺)	1.429s	16	2.19x

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

workflow with 25 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.363s (+3.6%)	1.017s (+1.1%)	0.654s	89	1.00x
💻 Local	Express	2.528s (~)	3.010s (-1.1%)	0.482s	30	6.97x
💻 Local	Nitro	2.587s (+2.4%)	3.010s (~)	0.422s	30	7.13x
💻 Local	Next.js (Turbopack)	2.636s (-4.0%)	3.008s (-4.4%)	0.372s	30	7.27x
🐘 Postgres	Express	⚠️ missing	-	-	-	-
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	1.515s (+6.3% 🔺)	2.971s (-2.6%)	1.456s	31	1.00x
▲ Vercel	Nitro	1.920s (+45.1% 🔺)	3.763s (+51.1% 🔺)	1.842s	24	1.27x
▲ Vercel	Next.js (Turbopack)	3.201s (+23.6% 🔺)	5.192s (+27.9% 🔺)	1.991s	18	2.11x

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

workflow with 50 concurrent data payload steps (10KB)

💻 Local Development

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.593s (+3.5%)	1.207s (+12.0% 🔺)	0.613s	100	1.00x
💻 Local	Nitro	5.514s (-5.8% 🟢)	8.954s (+3.0%)	3.440s	14	9.29x
💻 Local	Express	5.711s (-4.5%)	8.559s (+0.8%)	2.848s	15	9.62x
💻 Local	Next.js (Turbopack)	6.180s (-3.9%)	9.097s (-1.6%)	2.917s	14	10.42x
🐘 Postgres	Express	⚠️ missing	-	-	-	-
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.937s (+16.3% 🔺)	3.979s (+12.4% 🔺)	2.042s	31	1.00x
▲ Vercel	Express	2.044s (+27.3% 🔺)	3.983s (+9.5% 🔺)	1.939s	31	1.05x
▲ Vercel	Next.js (Turbopack)	20.065s (+377.6% 🔺)	21.899s (+282.3% 🔺)	1.834s	19	10.36x

🔍 Observability: Nitro | 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)	1.151s (+1.0%)	1.962s (~)	0.012s (+17.5% 🔺)	2.019s (~)	0.868s	10	1.00x
💻 Local	Express	1.164s (~)	2.004s (~)	0.012s (+7.9% 🔺)	2.020s (~)	0.856s	10	1.01x
💻 Local	Nitro	1.164s (+0.8%)	2.004s (~)	0.012s (+16.2% 🔺)	2.019s (~)	0.855s	10	1.01x
🐘 Postgres	Nitro	1.166s (~)	1.995s (~)	0.001s (+16.7% 🔺)	2.013s (~)	0.847s	10	1.01x
🐘 Postgres	Express	⚠️ missing	-	-	-	-	-
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	1.993s (+4.5%)	3.849s (+30.0% 🔺)	5.380s (+192.5% 🔺)	9.769s (+87.1% 🔺)	7.776s	10	1.00x
▲ Vercel	Express	2.099s (+11.0% 🔺)	4.137s (+27.8% 🔺)	5.377s (+228.3% 🔺)	10.039s (+87.8% 🔺)	7.940s	10	1.05x
▲ Vercel	Next.js (Turbopack)	3.505s (+10.0% 🔺)	4.567s (+30.6% 🔺)	4.849s (+233.0% 🔺)	10.605s (+64.8% 🔺)	7.100s	10	1.76x

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

stream pipeline with 5 transform steps (1MB)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
💻 Local	🥇 Nitro	1.569s (-0.8%)	2.005s (-1.7%)	0.014s (+7.7% 🔺)	2.023s (-1.8%)	0.453s	30	1.00x
💻 Local	Express	1.572s (~)	2.005s (~)	0.013s (+6.2% 🔺)	2.022s (~)	0.450s	30	1.00x
🐘 Postgres	Nitro	1.585s (-2.8%)	2.001s (~)	0.005s (-0.6%)	2.025s (~)	0.441s	30	1.01x
💻 Local	Next.js (Turbopack)	1.589s (-0.8%)	1.965s (~)	0.013s (+3.0%)	2.021s (~)	0.433s	30	1.01x
🐘 Postgres	Express	⚠️ missing	-	-	-	-	-
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	5.540s (-2.6%)	8.553s (+29.7% 🔺)	0.086s (-63.2% 🟢)	9.157s (+23.5% 🔺)	3.617s	7	1.00x
▲ Vercel	Express	5.757s (+6.1% 🔺)	8.035s (+13.9% 🔺)	0.245s (+9.7% 🔺)	8.784s (+12.9% 🔺)	3.026s	7	1.04x
▲ Vercel	Next.js (Turbopack)	10.430s (+9.7% 🔺)	11.416s (+8.3% 🔺)	0.256s (+17.2% 🔺)	12.914s (+11.8% 🔺)	2.484s	5	1.88x

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

10 parallel streams (1MB each)

💻 Local Development

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
🐘 Postgres	🥇 Nitro	0.770s (-9.1% 🟢)	1.042s (-7.1% 🟢)	0.000s (+364.9% 🔺)	1.069s (-6.4% 🟢)	0.299s	57	1.00x
💻 Local	Next.js (Turbopack)	1.207s (-13.8% 🟢)	1.902s (-3.8%)	0.000s (-69.4% 🟢)	1.942s (-3.7%)	0.735s	31	1.57x
💻 Local	Express	1.247s (-8.0% 🟢)	1.822s (-5.0% 🟢)	0.000s (+9.1% 🔺)	1.825s (-5.0% 🟢)	0.578s	33	1.62x
💻 Local	Nitro	1.268s (-6.0% 🟢)	1.910s (-2.0%)	0.000s (+126.0% 🔺)	1.913s (-2.0%)	0.645s	32	1.65x
🐘 Postgres	Express	⚠️ missing	-	-	-	-	-
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Nitro	3.020s (-26.5% 🟢)	4.736s (-9.9% 🟢)	0.000s (+Infinity% 🔺)	5.199s (-9.1% 🟢)	2.179s	12	1.00x
▲ Vercel	Express	3.163s (-39.5% 🟢)	4.967s (-24.9% 🟢)	0.001s (+118.2% 🔺)	5.461s (-23.5% 🟢)	2.298s	11	1.05x
▲ Vercel	Next.js (Turbopack)	5.428s (+20.7% 🔺)	6.351s (+17.5% 🔺)	0.000s (NaN%)	7.672s (+24.3% 🔺)	2.244s	8	1.80x

🔍 Observability: Nitro | 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	🥇 Nitro	1.626s (-8.7% 🟢)	2.216s (-8.3% 🟢)	0.000s (NaN%)	2.232s (-8.3% 🟢)	0.605s	27	1.00x
💻 Local	Express	3.000s (-9.7% 🟢)	3.655s (-6.4% 🟢)	0.000s (+119.6% 🔺)	3.658s (-6.4% 🟢)	0.658s	17	1.84x
💻 Local	Nitro	3.017s (-7.0% 🟢)	3.537s (-9.4% 🟢)	0.000s (-81.2% 🟢)	3.540s (-9.4% 🟢)	0.523s	17	1.86x
💻 Local	Next.js (Turbopack)	3.078s (-11.0% 🟢)	3.558s (-10.8% 🟢)	0.000s (-84.4% 🟢)	3.600s (-10.7% 🟢)	0.522s	17	1.89x
🐘 Postgres	Express	⚠️ missing	-	-	-	-	-
🐘 Postgres	Next.js (Turbopack)	⚠️ missing	-	-	-	-	-

▲ Production (Vercel)

World	Framework	Workflow Time	TTFB	Slurp	Wall Time	Overhead	Samples	vs Fastest
▲ Vercel	🥇 Express	4.674s (+4.1%)	6.379s (+12.0% 🔺)	0.000s (NaN%)	6.822s (+10.7% 🔺)	2.148s	9	1.00x
▲ Vercel	Nitro	4.937s (+13.5% 🔺)	6.368s (+21.3% 🔺)	0.000s (+Infinity% 🔺)	6.849s (+20.9% 🔺)	1.913s	9	1.06x
▲ Vercel	Next.js (Turbopack)	7.415s (+0.7%)	8.643s (+10.7% 🔺)	0.000s (+Infinity% 🔺)	9.521s (+6.4% 🔺)	2.106s	7	1.59x

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

Summary

Fastest Framework by World

Winner determined by most benchmark wins

World	🥇 Fastest Framework	Wins
💻 Local	Express	10/21
🐘 Postgres	Nitro	21/21
▲ Vercel	Nitro	14/21

Fastest World by Framework

Winner determined by most benchmark wins

Framework	🥇 Fastest World	Wins
Express	💻 Local	17/21
Next.js (Turbopack)	💻 Local	20/21
Nitro	🐘 Postgres	15/21

Column Definitions

Workflow Time: Runtime reported by workflow (completedAt - createdAt) - primary metric
TTFB: Time to First Byte - time from workflow start until first stream byte received (stream benchmarks only)
Slurp: Time from first byte to complete stream consumption (stream benchmarks only)
Wall Time: Total testbench time (trigger workflow + poll for result)
Overhead: Testbench overhead (Wall Time - Workflow Time)
Samples: Number of benchmark iterations run
vs Fastest: How much slower compared to the fastest configuration for this benchmark

Worlds:

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

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NathanColosimo changed the title ~~Skip SvelteKit prepare sync during CI installs~~ Remove SvelteKit prepare lifecycle hook Jul 8, 2026

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Remove SvelteKit prepare lifecycle hook

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🧪 E2E Test Results

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📊 Benchmark Results

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

💻 Local Development

▲ Production (Vercel)

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▲ Production (Vercel)

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▲ Production (Vercel)

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▲ Production (Vercel)

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▲ Production (Vercel)

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▲ Production (Vercel)

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▲ Production (Vercel)

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▲ Production (Vercel)

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▲ Production (Vercel)

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▲ Production (Vercel)

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▲ Production (Vercel)

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▲ Production (Vercel)

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▲ Production (Vercel)

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