[TooTallNate]

Summary

Follow-up to #3971: add runtime coverage for class names after the registration IIFE transform, complementing the existing golden-output fixtures.

• Execute original and freshly transformed JavaScript in Node for both step and workflow modes, exercising classes with step methods and classes with custom serialization.
• Assert inferred and explicit .name values and property descriptors across variable declarations, multiple declarators, parentheses, deferred assignment, object literal keys, and anonymous argument/array/conditional positions.
• Check that this.name is already correct during static initialization of a variable-inferred class, and that the serialization registry contains the exact returned constructor.

This is test-only and includes a one-sentence empty changeset, with no package release; it does not address the separate member-assignment naming discrepancy.

CI

No CI wiring is needed. The existing Linux and Windows unit-test jobs in .github/workflows/tests.yml run Turbo tests, which invoke the @workflow/swc-plugin test script (cargo test -p swc_workflow). Cargo automatically discovers transform/tests/class_names.rs and its two tests.

The shared setup action installs Node 22 for the subprocess assertions, and the Turbo test task has caching disabled.

Verification

• pnpm turbo test --filter=@workflow/swc-plugin: all 181 tests pass, including both new runtime tests.
• cargo test -p swc_workflow --test class_names: passes after the pre-commit hook.
• rustfmt --check --edition 2024 packages/swc-plugin-workflow/transform/tests/class_names.rs: passes.
• Changeset validation passes and reports no package bump for this PR.

[vercel]

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

Project	Deployment	Actions	Updated
example-nextjs-workflow-turbopack	Ready	Preview, v0	Sep 8, 2026 6:50pm UTC
example-nextjs-workflow-webpack	Ready	Preview, v0	Sep 8, 2026 6:50pm UTC
example-workflow	Ready	Preview, v0	Sep 8, 2026 6:50pm UTC
workbench-astro-workflow	Ready	Preview, v0	Sep 8, 2026 6:50pm UTC
workbench-express-workflow	Ready	Preview, v0	Sep 8, 2026 6:50pm UTC
workbench-fastify-workflow	Ready	Preview, v0	Sep 8, 2026 6:50pm UTC
workbench-hono-workflow	Ready	Preview, v0	Sep 8, 2026 6:50pm UTC
workbench-nestjs-workflow	Ready	Preview, v0	Sep 8, 2026 6:50pm UTC
workbench-nitro-workflow	Ready	Preview, v0	Sep 8, 2026 6:50pm UTC
workbench-nuxt-workflow	Ready	Preview, v0	Sep 8, 2026 6:50pm UTC
workbench-python-workflow	Ready	Preview, v0	Sep 8, 2026 6:50pm UTC
workbench-sveltekit-workflow	Ready	Preview, v0	Sep 8, 2026 6:50pm UTC
workbench-tanstack-start-workflow	Ready	Preview, v0	Sep 8, 2026 6:50pm UTC
workbench-vite-workflow	Ready	Preview, v0	Sep 8, 2026 6:50pm UTC
workflow-docs	Ready	Preview, v0	Sep 8, 2026 6:50pm UTC
workflow-swc-playground	Ready	Preview, v0	Sep 8, 2026 6:50pm UTC
workflow-tarballs	Ready	Preview, v0	Sep 8, 2026 6:50pm UTC
workflow-web	Ready	Preview, v0	Sep 8, 2026 6:50pm UTC

[changeset-bot]

🦋 Changeset detected

Latest commit: 3c4e4fc

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

This PR includes changesets to release 0 packages

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

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

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

[github-actions]

📊 Workflow Benchmarks

commit 3c4e4fc · Tue, 08 Sep 2026 19:10:06 GMT · run logs

Backend: vercel · app: nextjs-turbopack

Metric	Scenario	Best (ms)	P75 (ms)	P90 (ms)	P99 (ms)	Samples
TTFS	step	174 (-12%)	1226 🔴 (+15%) 🔻	1323 🔴 (+21%) 🔻	1435 🔴 (+20%) 🔻	30
TTFS	stream	185 (+5.1%)	1285 🔴 (+27%) 🔻	1308 🔴 (+28%) 🔻	1348 🔴 (+30%) 🔻	30
TTFS	hook + stream	1426 (+33%) 🔻	1540 🔴 (+30%) 🔻	1558 🔴 (+22%) 🔻	1766 🔴 (-11%)	30
Fan-out TTFS	Promise.all(100 steps)	490 (-18%) 💚	1817 (+5.5%)	1875 (+7.1%)	1956 (+6.5%)	10
Fan-out TTLS	Promise.all(100 steps)	1929 (+22%) 🔻	3492 (-8.4%)	3698 (-6.5%)	7073 (-35%) 💚	10
STSO	1020 steps (inline)	104 (+1.0%)	157 (+11%)	200 (+20%) 🔻	353 (+16%) 🔻	1019
WO	1020 steps	155530 (+5.5%)	155530 (+5.5%)	155530 (+5.5%)	155530 (+5.5%)	1
CRTT	first chunk (pooled)	65 (±0%)	99 (-26%) 💚	131 (-27%) 💚	244 (-11%)	28

Streams

Scenario	CRTT 1st	p75	p90	p99	CDV max	iters
paced control (100/s, 60B)	86.5 (-1%)	143 (-8%)	237 (+7%)	476 (+20%)	131 (-17%)	10
size sweep (100/s, 160B-12KB)	82 (-15%)	144 (-46%)	196 (-61%)	370 (-61%)	117 (-52%)	10
replay gateway-gpt-5.4-nano-2000t (1x)	96 (-7%)	141 (-21%)	224 (-34%)	528 (-21%)	411 (+26%)	3
replay eve-gpt-5.6-sol-2000t (1x)	97.5 (-41%)	142 (-6%)	186 (-7%)	479 (+16%)	394 (+1%)	2
replay eve-gpt-5.6-sol-2000t (2x)	103 (-26%)	268 (+8%)	463 (+32%)	1000 (+98%)	388 (+5%)	3

📈 STSO distribution vs main (inline / queue-hop histograms)

1020 steps (inline)

Cumulative STSO time: main 147324ms → this run 154231ms (Δ +6907ms, +5%)

  100-150 ms  ███████████████████┃████  main 819  this 697  -122
  150-200 ms  █████┃                    main 159  this 219   +60
  200-250 ms  █┃                        main  23  this  56   +33
  250-300 ms  ┃                         main   7  this  23   +16
  300-350 ms  ┃                         main   4  this  13    +9
  350-400 ms  ┃                         main   2  this   4    +2
  400-450 ms  ┃                         main   1  this   0    -1
  450-500 ms  ┃                         main   2  this   3    +1
  500-550 ms  ┃                         main   1  this   2    +1
  600-650 ms  ┃                         main   0  this   1    +1
  650-700 ms  ┃                         main   0  this   1    +1
3750-3800 ms  ┃                         main   1  this   0    -1

📈 CRTT drill-down vs main (RTT distributions & profiles)

variant  RTT 1ms→5s+             avg         p50         p90          p99     n
control  ······▄█▁▁···   121.9 (-5%)  110 (-10%)   237 (+7%)   476 (+20%)  3000
sweep    ······▄█▁····  121.9 (-32%)  112 (-18%)  196 (-61%)   370 (-61%)  3000
gw 1x    ·····▁▆█▂▁···  126.2 (-15%)  109 (-13%)  224 (-34%)   528 (-21%)  5295
eve 1x   ·····▁▆█▁▁···   122.5 (-7%)   106 (-9%)   186 (-7%)   479 (+16%)  5186
eve 2x   ·····▁▁█▆▁▁··  221.9 (+16%)   183 (+8%)  463 (+32%)  1000 (+98%)  7779

RTT over stream progress (avg per tenth of stream, bars scaled min→max):

control  ▆█▇▄▂▃▅█▅▁  110–132ms
sweep    ▇▃▄▄▅▇█▃▁▁  104–142ms
gw 1x    █▅▂▄▂▄▅▁▄▂  98–176ms
eve 1x   ▁▄▄▁▁▃█▄▆▆  106–147ms
eve 2x   ▂▁▁▁▂▃▃█▃▂  158–437ms

RTT by chunk size (avg per log size bin, ~160B → ~12KB serialized, bars scaled min→max):

sweep  ▂▇█▇▅▁▂  119–125ms

Delivery jitter over stream progress (avg positive CDV per tenth of stream, bars scaled min→max):

control  ▁▄▆▄▆▄██▇▁  33–40ms
sweep    ▁▂▄▆▆█▆▅▃▂  37–64ms
gw 1x    █▄▂▂▁▅▃▁▂▂  30–47ms
eve 1x   ▁▂▅▂▄▅█▃▆▆  20–29ms
eve 2x   █▄▂▃▄▅▄▇▁▇  24–40ms

ℹ️ Metric definitions & methodology

_{Streams: first-chunk RTT (the stream-open path, before any buffering/backpressure), CRTT percentiles, and worst delivery stall (CDV max). Cells are medians across iterations; per-run values in the artifacts. No 🔴/🟢 marks until targets attach.}

_{The collapsed STSO distribution section above buckets every step gap, split inline (same warm process — pure framework overhead) vs queue-hop (fresh process — dispatch, reinit, replay). █ = main, ┃ = this run, ░ = fill.}

_{The collapsed CRTT drill-down: per-variant RTT histograms (fixed log bins, · = empty) and mean RTT/positive-CDV profile lines over stream progress and chunk size. Histograms, avgs, and profiles merge exactly across runs; p50–p99 are percentile-of-percentiles. Per-index rows live in the artifacts.}

_{Best/P75/P90/P99 deltas compare against the most recent benchmark run on main at the time of this run. 🔻 flags a delta worse than +15%, 💚 one better than −15%.}

_{Metrics — TTFS: time to first step body (in-deployment start() → first step body) · Fan-out TTFS: fan-out time to first step (in-deployment start() → first of the parallel step bodies to complete) · Fan-out TTLS: fan-out time to last step (in-deployment start() → last of the parallel step bodies to complete, i.e. when the Promise.all resolves) · STSO: step-to-step overhead (gap between consecutive step bodies) · WO: workflow overhead (whole-run time outside step bodies, in-deployment anchored) · CRTT: chunk round-trip time (per-chunk write → read latency, one clock domain: deployment → stream backend → same deployment) · CDV: chunk delay variation / delivery jitter (inter-arrival gap minus inter-write gap per seq-adjacent pair; skew-free; the row is each run's MAX positive value, so one stall moves it)}

_{Scenarios — step: one trivial no-op step, no stream; no hooks, so the run stays in turbo mode (in-process fast path) · stream: one streaming step; no hooks, so the run stays in turbo mode (in-process fast path) · hook + stream: registers a hook before one step, which exits turbo mode (dispatch path) · 1020 steps: 1020 trivial sequential steps; STSO is measured between consecutive steps in the given step ranges, and WO is the whole-run overhead outside step bodies · Promise.all(100 steps): 100 trivial no-op steps started together in a single Promise.all; Fan-out TTFS is the first of them to complete and Fan-out TTLS the last, both from the in-deployment clientStart, so their gap is the spread the runtime adds across the fan-out · paced control (100/s, 60B): the control: 300 tiny (~60B) deltas metronome-paced at 100/s — zero workload structure, so it reads the transport floor and flush cadence, and disambiguates transport-wide vs workload-specific when a replay row moves · size sweep (100/s, 160B-12KB): same pacing as the control with deltas padded in rotation across seven log-spaced sizes (~160B–12KB) — rotation decouples size from stream position, so it isolates whether chunk size causes latency · replay gateway-gpt-5.4-nano-2000t (1x): raw provider SSE cadence captured at the AI gateway boundary (gpt-5.4-nano, the most popular gateway model; per-token deltas p50 208B = the modal production chunk size), replayed exactly as measured — the typical customer's workload; its CDV is the typical customer's real delivery jitter · replay eve-gpt-5.6-sol-2000t (1x): a captured eve turn (gpt-5.6-sol, the most-used demanding eve model; ~2000 output tokens = production p50 turn length) replayed exactly as measured — eve's envelope protocol re-ships the cumulative message so sizes ramp 142B→13KB; the demanding outlier tenant's reality · replay eve-gpt-5.6-sol-2000t (2x): the same eve capture at 2x — the headroom/stress row; real fast-tier models emit the same chunk sizes at proportionally higher rate, so time compression is a faithful speed model · first chunk (pooled): every run's seq-0 RTT pooled across all stream scenarios — the first chunk precedes any workload differentiation, so pooling samples one shared stream-open path with exact percentiles}

_{Replay cadences (semantic sha256) — eve-gpt-5.6-sol-2000t eaf22f5946e7c61f3c65c7006d550df180cfabd4e706254a09f22aec0cfb420d · gateway-gpt-5.4-nano-2000t 6f24ac518b6b83ff1d0e85a5fe78230db192716d66a7fc6b2fe022752001d041}

_{🔴 marks a percentile over its target (within target is left unmarked). Targets (p75/p90/p99, ms) — TTFS 200/300/600}

_{All timestamps are deployment-side; runs are triggered in-deployment, so the CI runner and api.vercel.com sit outside every measured window. TTFS = start() → first step body (includes dispatch + any cold start); Fan-out TTFS/TTLS = first/last step completion of one Promise.all from the same anchor (the gap is the runtime’s fan-out spread); STSO/WO between step bodies; CRTT inside the workflow (excludes the api.vercel.com read path).}

_{Cold starts stay in the numbers (real bursty-workload latency, inflates P75+); Best is the warm floor.}

[github-actions]

🧪 E2E Test Results

✅ All tests passed

⚠️ Flaky E2E Tests (passed on retry)

These tests failed at least once and passed on a retry. A recurring entry here is a real race worth investigating.

• abortReasonWorkflow: abort reason preserved across boundaries (fastify)
• getterStepWorkflow - getter functions with "use step" directive (astro)
• positive startIndex (skips first chunk) (python)
• promiseAllWorkflow (nextjs-webpack)
• promiseAllWorkflow (nitro)
• setAttributesInsideStepWorkflow: step-body calls append attributed native events (nextjs-turbopack)
• utf8StreamWorkflow (vite)

🛠 Infra Events (absorbed by the harness)

Platform anomalies the e2e harness detected and worked around (e.g. a run the queue never picked up, replaced by a fresh run). Clustered timestamps indicate a backend blip; a steady drip indicates a platform issue worth escalating.

• cold-start-warmup · suite warmup (tanstack-start) · at 18:51:46Z · abandoned wrun_01M215RFW1VMTJZW2AKWZE0R0Q
• run-pickup-stall · hookCleanupTestWorkflow - hook token reuse after workflow completion (nextjs-webpack) · at 18:55:46Z · abandoned wrun_01M21606CZ2Q2STBMA5V8EJ0PH

E2E Test Summary

Summary

	Passed	Failed	Skipped	Total
✅ ▲ Vercel Production	3636	0	684	4320
✅ 💻 Local Development	3922	0	558	4480
✅ 📦 Local Production	3922	0	558	4480
✅ 🐘 Local Postgres	3922	0	558	4480
✅ 🪟 Windows	320	0	0	320
✅ 🌐 Cross-language Conformance	68	0	73	141
✅ vercel-http-transport	817	0	143	960
✅ vercel-multi-region	27	0	0	27
✅ vercel-ws-transport	553	0	87	640
Total	17187	0	2661	19848

Details by Category

✅ ▲ Vercel Production

App	Passed	Failed	Skipped
✅ astro-node	132	0	28
✅ astro-quickjs	132	0	28
✅ example-node	132	0	28
✅ example-quickjs	132	0	28
✅ express-node	132	0	28
✅ express-quickjs	132	0	28
✅ fastify-node	132	0	28
✅ fastify-quickjs	132	0	28
✅ hono-node	132	0	28
✅ hono-quickjs	132	0	28
✅ nest-node	132	0	28
✅ nest-quickjs	132	0	28
✅ nextjs-turbopack-node	157	0	3
✅ nextjs-turbopack-quickjs	157	0	3
✅ nextjs-webpack-node	157	0	3
✅ nextjs-webpack-quickjs	157	0	3
✅ nitro-node	132	0	28
✅ nitro-quickjs	132	0	28
✅ nuxt-node	132	0	28
✅ nuxt-quickjs	132	0	28
✅ python-node	66	0	94
✅ sveltekit-node	151	0	9
✅ sveltekit-quickjs	151	0	9
✅ tanstack-start-node	132	0	28
✅ tanstack-start-quickjs	132	0	28
✅ vite-node	132	0	28
✅ vite-quickjs	132	0	28

✅ 💻 Local Development

App	Passed	Failed	Skipped
✅ astro-stable-node	134	0	26
✅ astro-stable-quickjs	134	0	26
✅ express-stable-node	134	0	26
✅ express-stable-quickjs	134	0	26
✅ fastify-stable-node	134	0	26
✅ fastify-stable-quickjs	134	0	26
✅ hono-stable-node	134	0	26
✅ hono-stable-quickjs	134	0	26
✅ nest-stable-node	134	0	26
✅ nest-stable-quickjs	134	0	26
✅ nextjs-turbopack-canary-node	141	0	19
✅ nextjs-turbopack-canary-quickjs	141	0	19
✅ nextjs-turbopack-stable-node	160	0	0
✅ nextjs-turbopack-stable-quickjs	160	0	0
✅ nextjs-webpack-canary-node	141	0	19
✅ nextjs-webpack-canary-quickjs	141	0	19
✅ nextjs-webpack-stable-node	160	0	0
✅ nextjs-webpack-stable-quickjs	160	0	0
✅ nitro-stable-node	134	0	26
✅ nitro-stable-quickjs	134	0	26
✅ nuxt-stable-node	134	0	26
✅ nuxt-stable-quickjs	134	0	26
✅ sveltekit-stable-node	153	0	7
✅ sveltekit-stable-quickjs	153	0	7
✅ tanstack-start-node	134	0	26
✅ tanstack-start-quickjs	134	0	26
✅ vite-stable-node	134	0	26
✅ vite-stable-quickjs	134	0	26

✅ 📦 Local Production

App	Passed	Failed	Skipped
✅ astro-stable-node	134	0	26
✅ astro-stable-quickjs	134	0	26
✅ express-stable-node	134	0	26
✅ express-stable-quickjs	134	0	26
✅ fastify-stable-node	134	0	26
✅ fastify-stable-quickjs	134	0	26
✅ hono-stable-node	134	0	26
✅ hono-stable-quickjs	134	0	26
✅ nest-stable-node	134	0	26
✅ nest-stable-quickjs	134	0	26
✅ nextjs-turbopack-canary-node	141	0	19
✅ nextjs-turbopack-canary-quickjs	141	0	19
✅ nextjs-turbopack-stable-node	160	0	0
✅ nextjs-turbopack-stable-quickjs	160	0	0
✅ nextjs-webpack-canary-node	141	0	19
✅ nextjs-webpack-canary-quickjs	141	0	19
✅ nextjs-webpack-stable-node	160	0	0
✅ nextjs-webpack-stable-quickjs	160	0	0
✅ nitro-stable-node	134	0	26
✅ nitro-stable-quickjs	134	0	26
✅ nuxt-stable-node	134	0	26
✅ nuxt-stable-quickjs	134	0	26
✅ sveltekit-stable-node	153	0	7
✅ sveltekit-stable-quickjs	153	0	7
✅ tanstack-start-node	134	0	26
✅ tanstack-start-quickjs	134	0	26
✅ vite-stable-node	134	0	26
✅ vite-stable-quickjs	134	0	26

✅ 🐘 Local Postgres

App	Passed	Failed	Skipped
✅ astro-stable-node	134	0	26
✅ astro-stable-quickjs	134	0	26
✅ express-stable-node	134	0	26
✅ express-stable-quickjs	134	0	26
✅ fastify-stable-node	134	0	26
✅ fastify-stable-quickjs	134	0	26
✅ hono-stable-node	134	0	26
✅ hono-stable-quickjs	134	0	26
✅ nest-stable-node	134	0	26
✅ nest-stable-quickjs	134	0	26
✅ nextjs-turbopack-canary-node	141	0	19
✅ nextjs-turbopack-canary-quickjs	141	0	19
✅ nextjs-turbopack-stable-node	160	0	0
✅ nextjs-turbopack-stable-quickjs	160	0	0
✅ nextjs-webpack-canary-node	141	0	19
✅ nextjs-webpack-canary-quickjs	141	0	19
✅ nextjs-webpack-stable-node	160	0	0
✅ nextjs-webpack-stable-quickjs	160	0	0
✅ nitro-stable-node	134	0	26
✅ nitro-stable-quickjs	134	0	26
✅ nuxt-stable-node	134	0	26
✅ nuxt-stable-quickjs	134	0	26
✅ sveltekit-stable-node	153	0	7
✅ sveltekit-stable-quickjs	153	0	7
✅ tanstack-start-node	134	0	26
✅ tanstack-start-quickjs	134	0	26
✅ vite-stable-node	134	0	26
✅ vite-stable-quickjs	134	0	26

✅ 🪟 Windows

App	Passed	Failed	Skipped
✅ nextjs-turbopack-node	160	0	0
✅ nextjs-turbopack-quickjs	160	0	0

✅ 🌐 Cross-language Conformance

App	Passed	Failed	Skipped
✅ python	68	0	73

✅ vercel-http-transport

App	Passed	Failed	Skipped
✅ example	132	0	28
✅ express	132	0	28
✅ hono	132	0	28
✅ nextjs-turbopack	157	0	3
✅ nitro	132	0	28
✅ vite	132	0	28

✅ vercel-multi-region

App	Passed	Failed	Skipped
✅ nextjs-turbopack	27	0	0

✅ vercel-ws-transport

App	Passed	Failed	Skipped
✅ example	132	0	28
✅ express	132	0	28
✅ nextjs-turbopack	157	0	3
✅ vite	132	0	28

---

📋 View full workflow run

[Copilot]

🟢 Approval recommended

The PR is test-only, scoped to SWC plugin runtime coverage, and does not change production code paths.

Pull request overview

Adds runtime (Node-executed) regression coverage to the SWC plugin transform tests to ensure class-expression name inference and class registration identity remain correct after transformation in both Step and Workflow modes.

Changes:

• Introduces class_names.rs runtime tests that execute both original and transformed JavaScript in Node and assert .name/descriptor correctness across multiple class-expression binding shapes.
• Extends the runtime assertions to also verify classId presence and that the workflow class registry maps each classId back to the exact constructor.
• Adds an empty (no-release) changeset documenting the test-only addition.

File summaries

File	Description
packages/swc-plugin-workflow/transform/tests/class_names.rs	Adds Node-executed runtime tests for class name preservation and class-registry identity in both transform modes.
.changeset/swc-class-name-runtime-tests.md	Documents the test-only change with a no-release changeset entry.

Review details

• Files reviewed: 2/2 changed files
• Comments generated: 0
• Review effort level: Lite

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[github-actions]

Sim World

Simulated world deterministic testing for races. Traces

🟠 world-sim scenario book — 1 fail of 41 total

fence=per-spec

scenario	outcome	events	virt	replay	violations
✅ smoke-no-steps	completed	3	0ms	ok	0
✅ smoke-one-step	completed	6	0ms	ok	0
✅ hook-at-step-started	completed	12	0ms	ok	0
✅ hook-at-step-completed	completed	12	0ms	ok	0
✅ hook-at-hook-created	completed	12	0ms	ok	0
✅ deadline-hook-wins	completed	7	1.0h	ok	0
✅ deadline-expires	completed	7	1.0h	ok	0
✅ long-sleep	completed	11	30.0d	ok	0
✅ hook-never-arrives	stalled	3	0ms	skipped	0
✅ step-retries-twice	completed	10	2.0s	ok	0
✅ parallel-steps	completed	9	0ms	ok	0
✅ hook-on-execution-state	completed	12	0ms	ok	0
✅ peek-hook-before-branch	completed	12	0ms	ok	0
✅ peek-hook-after-branch	completed	12	0ms	ok	0
✅ peek-hook-at-registration	completed	12	0ms	ok	0
✅ race-hook-before-probe	completed	12	0ms	ok	0
✅ race-hook-after-probe	completed	12	0ms	ok	0
✅ race-duplicate-delivery	completed	13	0ms	ok	0
✅ attr-hook-before-step	completed	11	0ms	ok	0
✅ attr-hook-after-step	completed	11	0ms	ok	0
✅ attr-from-step-body	completed	13	0ms	ok	0
✅ fork-hook-after-timeout	completed	14	1.0m	ok	0
✅ fork-hook-before-timeout	completed	14	1.0m	ok	0
✅ count-hook-after-timeout	completed	17	1.0m	ok	0
✅ count-hook-before-timeout	completed	20	1.0m	ok	0
✅ stale-read-step-count-fork	completed	20	1.0m	ok	0
✅ stale-read-equal-step-counts	completed	14	1.0m	ok	0
✅ step-vs-step-fork	completed	12	0ms	ok	0
✅ step-vs-step-fork-fenced	completed	12	0ms	ok	0
✅ fence-catches-benign-direction	completed	12	5ms	ok	0
✅ in-flight-before-decision	completed	17	1.0m	ok	0
❌ in-flight-before-decision-counted	completed	17	1.0m	ok	0
✅ in-flight-after-decision	completed	19	2.0m	ok	0
✅ stale-read-step-count-fork-fenced	completed	20	1.0m	ok	0
✅ fork-hook-wins	completed	13	1.0m	ok	0
✅ fork-timeout-wins	completed	13	1.0m	ok	0
✅ unclaimed-payload-under-fork	completed	17	1.0m	ok	0
✅ claimed-payload-under-fork	completed	17	1.0m	ok	0
✅ writers-independent-step-bodies	completed	12	0ms	ok	0
✅ writers-scripted-tempo	completed	12	0ms	ok	0
✅ cancel-mid-step	cancelled	7	0ms	skipped	0

Full trace: world-sim.txt

[github-actions]

Framework	Flow route	Step reg.	Framework output
hono	201.6 KiB (±0)	40.8 KiB (±0)	1.77 MiB (±0)
nextjs-turbopack	207.0 KiB (±0)	439 B (±0)	768.7 KiB (±0)

About these numbers

Sizes are gzip; parentheses show the change against main.
Flow route and Step reg. gate this job, on raw bytes rather than the gzip shown, at max(2%, 50.0 KiB). Framework output is informational.

3c4e4fc · run

[github-actions]

Backport PR opened against stable: #4086. (backport job run)