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Backport #3879: fix(core): re-arm late-claimed hook deliveries - #3905

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Backport #3879: fix(core): re-arm late-claimed hook deliveries#3905
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Automated backport of #3879 to stable (backport job run).

AI recommendation: This is a pure correctness fix (patch changeset) for the delivery-barrier machinery in packages/core/src/private.ts, which exists verbatim on stable — including the unarmed buffered-hook barrier, the idle safety net, and the no-op arm() on an already-retired entry that lets a run suspend before a claimed hook payload reaches workflow code. The added async-deserialization-ordering regression exercises the defect through the ordinary hook API with no retained-VM machinery, so stable is exposed to the same lost/hung delivery even though the failure was found in a retained VM. Note that packages/core/src/retained-vm-loop.test.ts does not exist on stable (retained VM is main-only), so that test file should be dropped from the cherry-pick.

Merge conflicts were resolved by AI (opencode with anthropic/claude-opus-5). Please review the conflict resolution carefully before merging.

@github-actions
fix(core): re-arm late-claimed hook deliveries (#3879)
9145e4a
* fix(core): re-arm late-claimed hook deliveries
* refactor(core): clarify delivery barrier lifecycle
Signed-off-by: Nathan Colosimo <110621881+NathanColosimo@users.noreply.github.com>
@github-actions
github-actionsBot requested review from a team and ijjk as code ownersAugust 31, 2026 19:12
@github-actionsgithub-actionsBot mentioned this pull request Aug 31, 2026
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🦋 Changeset detected

Latest commit: 9145e4a

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

This PR includes changesets to release 16 packages
NameType
@workflow/corePatch
@workflow/buildersPatch
@workflow/cliPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/vitestPatch
@workflow/web-sharedPatch
@workflow/webPatch
workflowPatch
@workflow/world-testingPatch
@workflow/astroPatch
@workflow/nestPatch
@workflow/rollupPatch
@workflow/sveltekitPatch
@workflow/vitePatch
@workflow/nuxtPatch

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@vercel

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ProjectDeploymentActionsUpdated (UTC)
example-nextjs-workflow-turbopackReadyReadyPreview, v0Aug 31, 2026 7:17pm
example-nextjs-workflow-webpackReadyReadyPreview, v0Aug 31, 2026 7:17pm
example-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-astro-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-express-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-fastify-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-hono-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-nestjs-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
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workbench-tanstack-start-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-vite-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-docsReadyReadyPreview, v0Aug 31, 2026 7:17pm
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🧪 E2E Test Results

❌ Some tests failed

Summary

PassedFailedSkippedTotal
✅ ▲ Vercel Production10990781177
✅ 💻 Local Development11980861284
✅ 📦 Local Production11980861284
✅ 🐘 Local Postgres11980861284
✅ 🪟 Windows10700107
❌ 🌍 Community Worlds821069197
✅ 📋 Other606036642
Total54881063815975

❌ Failed Tests

🌍 Community Worlds (106 failed)

redis (21 failed):

  • hookWorkflow | wrun_01M1CTV89F40HCCQ711TYTKD1X
  • hookWorkflow is not resumable via public webhook endpoint | wrun_01M1CTVF3G418CEBDDP6675VZ6
  • parallelStepsThenWebhookWorkflow - no hook_conflict from same-tick replay race | wrun_01M1CTVRZWBEG68NQFHJC8S06D
  • sleepingWorkflow | wrun_01M1CTWR4HTMJDTCW0ZVVXPSJH
  • outputStreamWorkflow negative startIndex (reads from end)
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns correct index after stream completes
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns -1 before any chunks are written
  • outputStreamWorkflow - getTailIndex and getStreamChunks getStreamChunks returns same content as reading the stream
  • error handling serialization failures step-argument serialization failure is catchable in workflow code
  • error handling serialization failures uncaught step-argument serialization failure fails the run as USER_ERROR without redelivery retries
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01M1CV53B15HQJBNWJMAB46EAD
  • hookGetConflictWorkflow - awaiting hook.getConflict() registers hook without payload | wrun_01M1CV5HBGQJCQZ6B9H2MSSJM7
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps | wrun_01M1CV5SFB9K6Q7VDWJKC707JD
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_01M1CV674ZN48849G6CG8J278M
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data | wrun_01M1CV73TRW50GY0TT9WPFY1HT
  • hookAdoptOwnerResultWorkflow - duplicate adopts the owner result via conflict.returnValue | wrun_01M1CV7840A1M2Z10HPTKJPB7Z
  • hookSignalOwnerWorkflow - duplicate forwards its payload to the owner via resumeHook | wrun_01M1CV7EZV8GZXC34CEVV71C2V
  • hookSupersedeOwnerWorkflow - duplicate cancels the owner and claims the released token | wrun_01M1CV7KADCB0E96HR9KNWTQT1
  • resume-or-start route pattern - resumeHook retried after start() reaches the new run | wrun_01M1CV7WF63Z20FV095ZTRKGZR
  • pages router sleepingWorkflow via pages router
  • resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01M1CVDQQMQAJGFJE7FBPT63TT

turso (85 failed):

  • addTenWorkflow | wrun_01M1CTTA4X1RHBEBFJFP0XW290
  • addTenWorkflow | wrun_01M1CTTA4X1RHBEBFJFP0XW290
  • deploymentId: 'latest' is a no-op in non-Vercel worlds
  • wellKnownAgentWorkflow (.well-known/agent) | wrun_01M1CTTGZPYD8D1M1SGBYKYW4G
  • should work with react rendering in step
  • promiseAllWorkflow | wrun_01M1CTTHD8X5EW9HS4S9GEQ2MJ
  • promiseRaceWorkflow | wrun_01M1CTTPDYJRZ97TSZQRAZZ0VV
  • promiseAnyWorkflow | wrun_01M1CTTRYZ3ET8MCMNE56S5KQH
  • importedStepOnlyWorkflow | wrun_01M1CTTVSFNVD0333BX5GD6SHF
  • readableStreamWorkflow | wrun_01M1CTTVAHX0Q1VWPAAK0MHRPS
  • hookWorkflow | wrun_01M1CTV89F40HCCQ711TYTKD1X
  • hookWorkflow is not resumable via public webhook endpoint | wrun_01M1CTVF3G418CEBDDP6675VZ6
  • webhookWorkflow | wrun_01M1CTVM3H0P6NBCF4RJ96CVRA
  • parallelStepsThenWebhookWorkflow - no hook_conflict from same-tick replay race | wrun_01M1CTVRZWBEG68NQFHJC8S06D
  • sleepingWorkflow | wrun_01M1CTWR4HTMJDTCW0ZVVXPSJH
  • parallelSleepWorkflow | wrun_01M1CTX84ZAV42GM449B1FYT2R
  • sleepWinsRaceWorkflow | wrun_01M1CTXBRN6KR3AFASTKEJ67Q4
  • stepWinsRaceWorkflow | wrun_01M1CTXFEGKH62EB6F3BKTWJT2
  • nullByteWorkflow | wrun_01M1CTXJZQBKSTQE2AH6E22YSR
  • workflowAndStepMetadataWorkflow | wrun_01M1CTXNCK1NJG649SQSGWWK73
  • outputStreamWorkflow no startIndex (reads all chunks)
  • outputStreamWorkflow positive startIndex (skips first chunk)
  • outputStreamWorkflow negative startIndex (reads from end)
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns correct index after stream completes
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns -1 before any chunks are written
  • outputStreamWorkflow - getTailIndex and getStreamChunks getStreamChunks returns same content as reading the stream
  • outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_01M1CTZY2AFJCCJ6BV61WTHTQ9
  • writableForwardedFromWorkflowWorkflow | wrun_01M1CV0AW9T5022NVPTEYZXZ4F
  • writableForwardedFromStepWorkflow | wrun_01M1CV0E0AH938BDRG6XYM46B2
  • fetchWorkflow | wrun_01M1CV0GXS83RD8JVDW34WHPMH
  • promiseRaceStressTestWorkflow | wrun_01M1CV0MDJXNKHY0YWKJ0RH1VR
  • 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 serialization failures step-argument serialization failure is catchable in workflow code
  • error handling serialization failures uncaught step-argument serialization failure fails the run as USER_ERROR without redelivery retries
  • 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_01M1CV4N8WHK9A39B0QXR4828N
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01M1CV53B15HQJBNWJMAB46EAD
  • hookGetConflictWorkflow - awaiting hook.getConflict() registers hook without payload | wrun_01M1CV5HBGQJCQZ6B9H2MSSJM7
  • 'hookGetConflictWithPriorStepWorkflow' - hook.getConflict() does not block step execution | wrun_01M1CV5M2JQ5JP1V95Y0XF1C60
  • 'hookGetConflictWithParallelStepWorkfl…' - hook.getConflict() does not block step execution | wrun_01M1CV5PP8TGMTASZN1FTDRPMP
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps | wrun_01M1CV5SFB9K6Q7VDWJKC707JD
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_01M1CV674ZN48849G6CG8J278M
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data | wrun_01M1CV73TRW50GY0TT9WPFY1HT
  • hookAdoptOwnerResultWorkflow - duplicate adopts the owner result via conflict.returnValue | wrun_01M1CV7840A1M2Z10HPTKJPB7Z
  • hookSignalOwnerWorkflow - duplicate forwards its payload to the owner via resumeHook | wrun_01M1CV7EZV8GZXC34CEVV71C2V
  • hookSupersedeOwnerWorkflow - duplicate cancels the owner and claims the released token | wrun_01M1CV7KADCB0E96HR9KNWTQT1
  • resume-or-start route pattern - resumeHook retried after start() reaches the new run | wrun_01M1CV7WF63Z20FV095ZTRKGZR
  • hookDisposeTestWorkflow - hook token reuse after explicit disposal while workflow still running | wrun_01M1CV83N1CJ54BQ83R1EX6AFY
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars) | wrun_01M1CV8M08DXY5819TG7RMJAT2
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument | wrun_01M1CV8Y7JMBH3MX1XT7HGDPVC
  • closureVariableWorkflow - nested step functions with closure variables | wrun_01M1CV94J8GXC2XNAK6NZAGM1T
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step | wrun_01M1CV96WXD5N02VNRNVSE7PF4
  • 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_01M1CV9QSR19RPC42E3P96RBXN
  • Calculator.calculate - static workflow method using static step methods from another class | wrun_01M1CV9YQEY72NTQJGAR813AC5
  • AllInOneService.processNumber - static workflow method using sibling static step methods | wrun_01M1CVA4VJ1NV5S3Q4RGD1G161
  • ChainableService.processWithThis - static step methods using this to reference the class | wrun_01M1CVAAWENCXZDM9GEFEJQKD4
  • thisSerializationWorkflow - step function invoked with .call() and .apply() | wrun_01M1CVAJ6E397ZJZQSXKNEAEYW
  • customSerializationWorkflow - custom class serialization with WORKFLOW_SERIALIZE/WORKFLOW_DESERIALIZE | wrun_01M1CVASJ48AXFCJZGV5Z10EHS
  • instanceMethodStepWorkflow - instance methods with "use step" directive | wrun_01M1CVB141FVW96K1HKNAC1PDN
  • crossContextSerdeWorkflow - classes defined in step code are deserializable in workflow context | wrun_01M1CVBDFE0EFX5MS0K99WC42X
  • stepFunctionAsStartArgWorkflow - step function reference passed as start() argument | wrun_01M1CVBNZR5XDCFMVK00JZZ5MK
  • cancelRun - cancelling a running workflow | wrun_01M1CVBXAM3Q7CWZQYM7P5MM3V
  • cancelRun via CLI - cancelling a running workflow | wrun_01M1CVC2FGT0X78QG1WPA922DH
  • 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_01M1CVCARYF6RMDW9ZB2AHWFPB
  • hookWithSleepFinalStepWorkflow - step only on final payload | wrun_01M1CVCQ3510E0FBQQQXZB7QJ3
  • sleepInLoopWorkflow - sleep inside loop with steps actually delays each iteration | wrun_01M1CVD0N32V3V0AJTA45VJ4KW
  • sleepWithSequentialStepsWorkflow - sequential steps work with concurrent sleep (control) | wrun_01M1CVDBM40MXAM6SDPZBCW8V0
  • importMetaUrlWorkflow - import.meta.url is available in step bundles | wrun_01M1CVDJVYDQ2BKNNQQ48DNFKD
  • metadataFromHelperWorkflow - getWorkflowMetadata/getStepMetadata work from module-level helper (#1577) | wrun_01M1CVDNA6CJH9YV3V18A902Y8
  • resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01M1CVDQQMQAJGFJE7FBPT63TT

Details by Category

✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro9908
✅ example9908
✅ express9908
✅ fastify9908
✅ hono9908
✅ nextjs-turbopack10403
✅ nextjs-webpack10403
✅ nitro9908
✅ nuxt9908
✅ sveltekit9908
✅ vite9908
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack10700
❌ 🌍 Community Worlds
AppPassedFailedSkipped
✅ mongodb-dev403
✅ redis-dev403
❌ redis67210
✅ turso-dev403
❌ turso3850
✅ 📋 Other
AppPassedFailedSkipped
✅ e2e-local-dev-nest-stable10106
✅ e2e-local-dev-tanstack-start-stable10106
✅ e2e-local-postgres-nest-stable10106
✅ e2e-local-postgres-tanstack-start-stable10106
✅ e2e-local-prod-nest-stable10106
✅ e2e-local-prod-tanstack-start-stable10106

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@pranaygp

pranaygp commented Aug 31, 2026

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closing since this only manifested in v5 in retained VM replays, but is't an issue in v4 even if it's "technically" a bug

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Backport #3879: fix(core): re-arm late-claimed hook deliveries by github-actions[bot] · Pull Request #3905 · vercel/workflow · GitHub
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Backport #3879: fix(core): re-arm late-claimed hook deliveries - #3905
Closed
github-actions[bot] wants to merge 1 commit into
stablefrom 
backport/pr-3879-to-stable
Closed
Backport #3879: fix(core): re-arm late-claimed hook deliveries#3905
github-actions[bot] wants to merge 1 commit into
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backport/pr-3879-to-stable
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@github-actions
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Automated backport of #3879 to stable (backport job run).
AI recommendation: This is a pure correctness fix (patch changeset) for the delivery-barrier machinery in packages/core/src/private.ts, which exists verbatim on stable — including the unarmed buffered-hook barrier, the idle safety net, and the no-op arm() on an already-retired entry that lets a run suspend before a claimed hook payload reaches workflow code. The added async-deserialization-ordering regression exercises the defect through the ordinary hook API with no retained-VM machinery, so stable is exposed to the same lost/hung delivery even though the failure was found in a retained VM. Note that packages/core/src/retained-vm-loop.test.ts does not exist on stable (retained VM is main-only), so that test file should be dropped from the cherry-pick.
Merge conflicts were resolved by AI (opencode with anthropic/claude-opus-5). Please review the conflict resolution carefully before merging.
@github-actions
fix(core): re-arm late-claimed hook deliveries (#3879)
9145e4a
* fix(core): re-arm late-claimed hook deliveries
* refactor(core): clarify delivery barrier lifecycle
Signed-off-by: Nathan Colosimo <110621881+NathanColosimo@users.noreply.github.com>
@github-actions
github-actionsBot
requested review from
a team and ijjk
as code ownersAugust 31, 2026 19:12
@github-actionsgithub-actionsBot
mentioned this pull request
Aug 31, 2026
 Merged

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Aug 31, 2026

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🦋 Changeset detected
Latest commit: 9145e4a
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 16 packages
NameType
@workflow/corePatch
@workflow/buildersPatch
@workflow/cliPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/vitestPatch
@workflow/web-sharedPatch
@workflow/webPatch
workflowPatch
@workflow/world-testingPatch
@workflow/astroPatch
@workflow/nestPatch
@workflow/rollupPatch
@workflow/sveltekitPatch
@workflow/vitePatch
@workflow/nuxtPatch
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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Aug 31, 2026•

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The latest updates on your projects. Learn more about Vercel for GitHub.
ProjectDeploymentActionsUpdated (UTC)
example-nextjs-workflow-turbopackReadyReadyPreview, v0Aug 31, 2026 7:17pm
example-nextjs-workflow-webpackReadyReadyPreview, v0Aug 31, 2026 7:17pm
example-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-astro-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-express-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-fastify-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-hono-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-nestjs-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-nitro-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-nuxt-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-python-workflowErrorErrorv0Aug 31, 2026 7:17pm
workbench-sveltekit-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-tanstack-start-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-vite-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-docsReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-swc-playgroundReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-tarballsReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-webReadyReadyPreview, v0Aug 31, 2026 7:17pm
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Aug 31, 2026•

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🧪 E2E Test Results
❌ Some tests failed
Summary
PassedFailedSkippedTotal
✅ ▲ Vercel Production10990781177
✅ 💻 Local Development11980861284
✅ 📦 Local Production11980861284
✅ 🐘 Local Postgres11980861284
✅ 🪟 Windows10700107
❌ 🌍 Community Worlds821069197
✅ 📋 Other606036642
Total54881063815975
❌ Failed Tests
🌍 Community Worlds (106 failed)
redis (21 failed):
  • hookWorkflow | wrun_01M1CTV89F40HCCQ711TYTKD1X
  • hookWorkflow is not resumable via public webhook endpoint | wrun_01M1CTVF3G418CEBDDP6675VZ6
  • parallelStepsThenWebhookWorkflow - no hook_conflict from same-tick replay race | wrun_01M1CTVRZWBEG68NQFHJC8S06D
  • sleepingWorkflow | wrun_01M1CTWR4HTMJDTCW0ZVVXPSJH
  • outputStreamWorkflow negative startIndex (reads from end)
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns correct index after stream completes
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns -1 before any chunks are written
  • outputStreamWorkflow - getTailIndex and getStreamChunks getStreamChunks returns same content as reading the stream
  • error handling serialization failures step-argument serialization failure is catchable in workflow code
  • error handling serialization failures uncaught step-argument serialization failure fails the run as USER_ERROR without redelivery retries
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01M1CV53B15HQJBNWJMAB46EAD
  • hookGetConflictWorkflow - awaiting hook.getConflict() registers hook without payload | wrun_01M1CV5HBGQJCQZ6B9H2MSSJM7
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps | wrun_01M1CV5SFB9K6Q7VDWJKC707JD
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_01M1CV674ZN48849G6CG8J278M
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data | wrun_01M1CV73TRW50GY0TT9WPFY1HT
  • hookAdoptOwnerResultWorkflow - duplicate adopts the owner result via conflict.returnValue | wrun_01M1CV7840A1M2Z10HPTKJPB7Z
  • hookSignalOwnerWorkflow - duplicate forwards its payload to the owner via resumeHook | wrun_01M1CV7EZV8GZXC34CEVV71C2V
  • hookSupersedeOwnerWorkflow - duplicate cancels the owner and claims the released token | wrun_01M1CV7KADCB0E96HR9KNWTQT1
  • resume-or-start route pattern - resumeHook retried after start() reaches the new run | wrun_01M1CV7WF63Z20FV095ZTRKGZR
  • pages router sleepingWorkflow via pages router
  • resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01M1CVDQQMQAJGFJE7FBPT63TT
turso (85 failed):
  • addTenWorkflow | wrun_01M1CTTA4X1RHBEBFJFP0XW290
  • addTenWorkflow | wrun_01M1CTTA4X1RHBEBFJFP0XW290
  • deploymentId: 'latest' is a no-op in non-Vercel worlds
  • wellKnownAgentWorkflow (.well-known/agent) | wrun_01M1CTTGZPYD8D1M1SGBYKYW4G
  • should work with react rendering in step
  • promiseAllWorkflow | wrun_01M1CTTHD8X5EW9HS4S9GEQ2MJ
  • promiseRaceWorkflow | wrun_01M1CTTPDYJRZ97TSZQRAZZ0VV
  • promiseAnyWorkflow | wrun_01M1CTTRYZ3ET8MCMNE56S5KQH
  • importedStepOnlyWorkflow | wrun_01M1CTTVSFNVD0333BX5GD6SHF
  • readableStreamWorkflow | wrun_01M1CTTVAHX0Q1VWPAAK0MHRPS
  • hookWorkflow | wrun_01M1CTV89F40HCCQ711TYTKD1X
  • hookWorkflow is not resumable via public webhook endpoint | wrun_01M1CTVF3G418CEBDDP6675VZ6
  • webhookWorkflow | wrun_01M1CTVM3H0P6NBCF4RJ96CVRA
  • parallelStepsThenWebhookWorkflow - no hook_conflict from same-tick replay race | wrun_01M1CTVRZWBEG68NQFHJC8S06D
  • sleepingWorkflow | wrun_01M1CTWR4HTMJDTCW0ZVVXPSJH
  • parallelSleepWorkflow | wrun_01M1CTX84ZAV42GM449B1FYT2R
  • sleepWinsRaceWorkflow | wrun_01M1CTXBRN6KR3AFASTKEJ67Q4
  • stepWinsRaceWorkflow | wrun_01M1CTXFEGKH62EB6F3BKTWJT2
  • nullByteWorkflow | wrun_01M1CTXJZQBKSTQE2AH6E22YSR
  • workflowAndStepMetadataWorkflow | wrun_01M1CTXNCK1NJG649SQSGWWK73
  • outputStreamWorkflow no startIndex (reads all chunks)
  • outputStreamWorkflow positive startIndex (skips first chunk)
  • outputStreamWorkflow negative startIndex (reads from end)
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns correct index after stream completes
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns -1 before any chunks are written
  • outputStreamWorkflow - getTailIndex and getStreamChunks getStreamChunks returns same content as reading the stream
  • outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_01M1CTZY2AFJCCJ6BV61WTHTQ9
  • writableForwardedFromWorkflowWorkflow | wrun_01M1CV0AW9T5022NVPTEYZXZ4F
  • writableForwardedFromStepWorkflow | wrun_01M1CV0E0AH938BDRG6XYM46B2
  • fetchWorkflow | wrun_01M1CV0GXS83RD8JVDW34WHPMH
  • promiseRaceStressTestWorkflow | wrun_01M1CV0MDJXNKHY0YWKJ0RH1VR
  • 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 serialization failures step-argument serialization failure is catchable in workflow code
  • error handling serialization failures uncaught step-argument serialization failure fails the run as USER_ERROR without redelivery retries
  • 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_01M1CV4N8WHK9A39B0QXR4828N
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01M1CV53B15HQJBNWJMAB46EAD
  • hookGetConflictWorkflow - awaiting hook.getConflict() registers hook without payload | wrun_01M1CV5HBGQJCQZ6B9H2MSSJM7
  • 'hookGetConflictWithPriorStepWorkflow' - hook.getConflict() does not block step execution | wrun_01M1CV5M2JQ5JP1V95Y0XF1C60
  • 'hookGetConflictWithParallelStepWorkfl…' - hook.getConflict() does not block step execution | wrun_01M1CV5PP8TGMTASZN1FTDRPMP
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps | wrun_01M1CV5SFB9K6Q7VDWJKC707JD
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_01M1CV674ZN48849G6CG8J278M
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data | wrun_01M1CV73TRW50GY0TT9WPFY1HT
  • hookAdoptOwnerResultWorkflow - duplicate adopts the owner result via conflict.returnValue | wrun_01M1CV7840A1M2Z10HPTKJPB7Z
  • hookSignalOwnerWorkflow - duplicate forwards its payload to the owner via resumeHook | wrun_01M1CV7EZV8GZXC34CEVV71C2V
  • hookSupersedeOwnerWorkflow - duplicate cancels the owner and claims the released token | wrun_01M1CV7KADCB0E96HR9KNWTQT1
  • resume-or-start route pattern - resumeHook retried after start() reaches the new run | wrun_01M1CV7WF63Z20FV095ZTRKGZR
  • hookDisposeTestWorkflow - hook token reuse after explicit disposal while workflow still running | wrun_01M1CV83N1CJ54BQ83R1EX6AFY
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars) | wrun_01M1CV8M08DXY5819TG7RMJAT2
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument | wrun_01M1CV8Y7JMBH3MX1XT7HGDPVC
  • closureVariableWorkflow - nested step functions with closure variables | wrun_01M1CV94J8GXC2XNAK6NZAGM1T
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step | wrun_01M1CV96WXD5N02VNRNVSE7PF4
  • 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_01M1CV9QSR19RPC42E3P96RBXN
  • Calculator.calculate - static workflow method using static step methods from another class | wrun_01M1CV9YQEY72NTQJGAR813AC5
  • AllInOneService.processNumber - static workflow method using sibling static step methods | wrun_01M1CVA4VJ1NV5S3Q4RGD1G161
  • ChainableService.processWithThis - static step methods using this to reference the class | wrun_01M1CVAAWENCXZDM9GEFEJQKD4
  • thisSerializationWorkflow - step function invoked with .call() and .apply() | wrun_01M1CVAJ6E397ZJZQSXKNEAEYW
  • customSerializationWorkflow - custom class serialization with WORKFLOW_SERIALIZE/WORKFLOW_DESERIALIZE | wrun_01M1CVASJ48AXFCJZGV5Z10EHS
  • instanceMethodStepWorkflow - instance methods with "use step" directive | wrun_01M1CVB141FVW96K1HKNAC1PDN
  • crossContextSerdeWorkflow - classes defined in step code are deserializable in workflow context | wrun_01M1CVBDFE0EFX5MS0K99WC42X
  • stepFunctionAsStartArgWorkflow - step function reference passed as start() argument | wrun_01M1CVBNZR5XDCFMVK00JZZ5MK
  • cancelRun - cancelling a running workflow | wrun_01M1CVBXAM3Q7CWZQYM7P5MM3V
  • cancelRun via CLI - cancelling a running workflow | wrun_01M1CVC2FGT0X78QG1WPA922DH
  • 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_01M1CVCARYF6RMDW9ZB2AHWFPB
  • hookWithSleepFinalStepWorkflow - step only on final payload | wrun_01M1CVCQ3510E0FBQQQXZB7QJ3
  • sleepInLoopWorkflow - sleep inside loop with steps actually delays each iteration | wrun_01M1CVD0N32V3V0AJTA45VJ4KW
  • sleepWithSequentialStepsWorkflow - sequential steps work with concurrent sleep (control) | wrun_01M1CVDBM40MXAM6SDPZBCW8V0
  • importMetaUrlWorkflow - import.meta.url is available in step bundles | wrun_01M1CVDJVYDQ2BKNNQQ48DNFKD
  • metadataFromHelperWorkflow - getWorkflowMetadata/getStepMetadata work from module-level helper (#1577) | wrun_01M1CVDNA6CJH9YV3V18A902Y8
  • resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01M1CVDQQMQAJGFJE7FBPT63TT
Details by Category
✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro9908
✅ example9908
✅ express9908
✅ fastify9908
✅ hono9908
✅ nextjs-turbopack10403
✅ nextjs-webpack10403
✅ nitro9908
✅ nuxt9908
✅ sveltekit9908
✅ vite9908
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack10700
❌ 🌍 Community Worlds
AppPassedFailedSkipped
✅ mongodb-dev403
✅ redis-dev403
❌ redis67210
✅ turso-dev403
❌ turso3850
✅ 📋 Other
AppPassedFailedSkipped
✅ e2e-local-dev-nest-stable10106
✅ e2e-local-dev-tanstack-start-stable10106
✅ e2e-local-postgres-nest-stable10106
✅ e2e-local-postgres-tanstack-start-stable10106
✅ e2e-local-prod-nest-stable10106
✅ e2e-local-prod-tanstack-start-stable10106
📋 View full workflow run
@pranaygp
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Aug 31, 2026

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closing since this only manifested in v5 in retained VM replays, but is't an issue in v4 even if it's "technically" a bug
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Backport #3879: fix(core): re-arm late-claimed hook deliveries by github-actions[bot] · Pull Request #3905 · vercel/workflow · GitHub
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Backport #3879: fix(core): re-arm late-claimed hook deliveries - #3905
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Backport #3879: fix(core): re-arm late-claimed hook deliveries#3905
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Aug 31, 2026

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Automated backport of #3879 to stable (backport job run).
AI recommendation: This is a pure correctness fix (patch changeset) for the delivery-barrier machinery in packages/core/src/private.ts, which exists verbatim on stable — including the unarmed buffered-hook barrier, the idle safety net, and the no-op arm() on an already-retired entry that lets a run suspend before a claimed hook payload reaches workflow code. The added async-deserialization-ordering regression exercises the defect through the ordinary hook API with no retained-VM machinery, so stable is exposed to the same lost/hung delivery even though the failure was found in a retained VM. Note that packages/core/src/retained-vm-loop.test.ts does not exist on stable (retained VM is main-only), so that test file should be dropped from the cherry-pick.
Merge conflicts were resolved by AI (opencode with anthropic/claude-opus-5). Please review the conflict resolution carefully before merging.
@github-actions
fix(core): re-arm late-claimed hook deliveries (#3879)
9145e4a
* fix(core): re-arm late-claimed hook deliveries
* refactor(core): clarify delivery barrier lifecycle
Signed-off-by: Nathan Colosimo <110621881+NathanColosimo@users.noreply.github.com>
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🦋 Changeset detected
Latest commit: 9145e4a
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 16 packages
NameType
@workflow/corePatch
@workflow/buildersPatch
@workflow/cliPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/vitestPatch
@workflow/web-sharedPatch
@workflow/webPatch
workflowPatch
@workflow/world-testingPatch
@workflow/astroPatch
@workflow/nestPatch
@workflow/rollupPatch
@workflow/sveltekitPatch
@workflow/vitePatch
@workflow/nuxtPatch
Not sure what this means? Click here to learn what changesets are.
Click here if you're a maintainer who wants to add another changeset to this PR
@vercel
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The latest updates on your projects. Learn more about Vercel for GitHub.
ProjectDeploymentActionsUpdated (UTC)
example-nextjs-workflow-turbopackReadyReadyPreview, v0Aug 31, 2026 7:17pm
example-nextjs-workflow-webpackReadyReadyPreview, v0Aug 31, 2026 7:17pm
example-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-astro-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-express-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-fastify-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-hono-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-nestjs-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-nitro-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-nuxt-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-python-workflowErrorErrorv0Aug 31, 2026 7:17pm
workbench-sveltekit-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-tanstack-start-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-vite-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-docsReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-swc-playgroundReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-tarballsReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-webReadyReadyPreview, v0Aug 31, 2026 7:17pm
@github-actions
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Aug 31, 2026•

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🧪 E2E Test Results
❌ Some tests failed
Summary
PassedFailedSkippedTotal
✅ ▲ Vercel Production10990781177
✅ 💻 Local Development11980861284
✅ 📦 Local Production11980861284
✅ 🐘 Local Postgres11980861284
✅ 🪟 Windows10700107
❌ 🌍 Community Worlds821069197
✅ 📋 Other606036642
Total54881063815975
❌ Failed Tests
🌍 Community Worlds (106 failed)
redis (21 failed):
  • hookWorkflow | wrun_01M1CTV89F40HCCQ711TYTKD1X
  • hookWorkflow is not resumable via public webhook endpoint | wrun_01M1CTVF3G418CEBDDP6675VZ6
  • parallelStepsThenWebhookWorkflow - no hook_conflict from same-tick replay race | wrun_01M1CTVRZWBEG68NQFHJC8S06D
  • sleepingWorkflow | wrun_01M1CTWR4HTMJDTCW0ZVVXPSJH
  • outputStreamWorkflow negative startIndex (reads from end)
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns correct index after stream completes
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns -1 before any chunks are written
  • outputStreamWorkflow - getTailIndex and getStreamChunks getStreamChunks returns same content as reading the stream
  • error handling serialization failures step-argument serialization failure is catchable in workflow code
  • error handling serialization failures uncaught step-argument serialization failure fails the run as USER_ERROR without redelivery retries
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01M1CV53B15HQJBNWJMAB46EAD
  • hookGetConflictWorkflow - awaiting hook.getConflict() registers hook without payload | wrun_01M1CV5HBGQJCQZ6B9H2MSSJM7
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps | wrun_01M1CV5SFB9K6Q7VDWJKC707JD
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_01M1CV674ZN48849G6CG8J278M
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data | wrun_01M1CV73TRW50GY0TT9WPFY1HT
  • hookAdoptOwnerResultWorkflow - duplicate adopts the owner result via conflict.returnValue | wrun_01M1CV7840A1M2Z10HPTKJPB7Z
  • hookSignalOwnerWorkflow - duplicate forwards its payload to the owner via resumeHook | wrun_01M1CV7EZV8GZXC34CEVV71C2V
  • hookSupersedeOwnerWorkflow - duplicate cancels the owner and claims the released token | wrun_01M1CV7KADCB0E96HR9KNWTQT1
  • resume-or-start route pattern - resumeHook retried after start() reaches the new run | wrun_01M1CV7WF63Z20FV095ZTRKGZR
  • pages router sleepingWorkflow via pages router
  • resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01M1CVDQQMQAJGFJE7FBPT63TT
turso (85 failed):
  • addTenWorkflow | wrun_01M1CTTA4X1RHBEBFJFP0XW290
  • addTenWorkflow | wrun_01M1CTTA4X1RHBEBFJFP0XW290
  • deploymentId: 'latest' is a no-op in non-Vercel worlds
  • wellKnownAgentWorkflow (.well-known/agent) | wrun_01M1CTTGZPYD8D1M1SGBYKYW4G
  • should work with react rendering in step
  • promiseAllWorkflow | wrun_01M1CTTHD8X5EW9HS4S9GEQ2MJ
  • promiseRaceWorkflow | wrun_01M1CTTPDYJRZ97TSZQRAZZ0VV
  • promiseAnyWorkflow | wrun_01M1CTTRYZ3ET8MCMNE56S5KQH
  • importedStepOnlyWorkflow | wrun_01M1CTTVSFNVD0333BX5GD6SHF
  • readableStreamWorkflow | wrun_01M1CTTVAHX0Q1VWPAAK0MHRPS
  • hookWorkflow | wrun_01M1CTV89F40HCCQ711TYTKD1X
  • hookWorkflow is not resumable via public webhook endpoint | wrun_01M1CTVF3G418CEBDDP6675VZ6
  • webhookWorkflow | wrun_01M1CTVM3H0P6NBCF4RJ96CVRA
  • parallelStepsThenWebhookWorkflow - no hook_conflict from same-tick replay race | wrun_01M1CTVRZWBEG68NQFHJC8S06D
  • sleepingWorkflow | wrun_01M1CTWR4HTMJDTCW0ZVVXPSJH
  • parallelSleepWorkflow | wrun_01M1CTX84ZAV42GM449B1FYT2R
  • sleepWinsRaceWorkflow | wrun_01M1CTXBRN6KR3AFASTKEJ67Q4
  • stepWinsRaceWorkflow | wrun_01M1CTXFEGKH62EB6F3BKTWJT2
  • nullByteWorkflow | wrun_01M1CTXJZQBKSTQE2AH6E22YSR
  • workflowAndStepMetadataWorkflow | wrun_01M1CTXNCK1NJG649SQSGWWK73
  • outputStreamWorkflow no startIndex (reads all chunks)
  • outputStreamWorkflow positive startIndex (skips first chunk)
  • outputStreamWorkflow negative startIndex (reads from end)
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns correct index after stream completes
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns -1 before any chunks are written
  • outputStreamWorkflow - getTailIndex and getStreamChunks getStreamChunks returns same content as reading the stream
  • outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_01M1CTZY2AFJCCJ6BV61WTHTQ9
  • writableForwardedFromWorkflowWorkflow | wrun_01M1CV0AW9T5022NVPTEYZXZ4F
  • writableForwardedFromStepWorkflow | wrun_01M1CV0E0AH938BDRG6XYM46B2
  • fetchWorkflow | wrun_01M1CV0GXS83RD8JVDW34WHPMH
  • promiseRaceStressTestWorkflow | wrun_01M1CV0MDJXNKHY0YWKJ0RH1VR
  • 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 serialization failures step-argument serialization failure is catchable in workflow code
  • error handling serialization failures uncaught step-argument serialization failure fails the run as USER_ERROR without redelivery retries
  • 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_01M1CV4N8WHK9A39B0QXR4828N
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01M1CV53B15HQJBNWJMAB46EAD
  • hookGetConflictWorkflow - awaiting hook.getConflict() registers hook without payload | wrun_01M1CV5HBGQJCQZ6B9H2MSSJM7
  • 'hookGetConflictWithPriorStepWorkflow' - hook.getConflict() does not block step execution | wrun_01M1CV5M2JQ5JP1V95Y0XF1C60
  • 'hookGetConflictWithParallelStepWorkfl…' - hook.getConflict() does not block step execution | wrun_01M1CV5PP8TGMTASZN1FTDRPMP
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps | wrun_01M1CV5SFB9K6Q7VDWJKC707JD
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_01M1CV674ZN48849G6CG8J278M
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data | wrun_01M1CV73TRW50GY0TT9WPFY1HT
  • hookAdoptOwnerResultWorkflow - duplicate adopts the owner result via conflict.returnValue | wrun_01M1CV7840A1M2Z10HPTKJPB7Z
  • hookSignalOwnerWorkflow - duplicate forwards its payload to the owner via resumeHook | wrun_01M1CV7EZV8GZXC34CEVV71C2V
  • hookSupersedeOwnerWorkflow - duplicate cancels the owner and claims the released token | wrun_01M1CV7KADCB0E96HR9KNWTQT1
  • resume-or-start route pattern - resumeHook retried after start() reaches the new run | wrun_01M1CV7WF63Z20FV095ZTRKGZR
  • hookDisposeTestWorkflow - hook token reuse after explicit disposal while workflow still running | wrun_01M1CV83N1CJ54BQ83R1EX6AFY
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars) | wrun_01M1CV8M08DXY5819TG7RMJAT2
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument | wrun_01M1CV8Y7JMBH3MX1XT7HGDPVC
  • closureVariableWorkflow - nested step functions with closure variables | wrun_01M1CV94J8GXC2XNAK6NZAGM1T
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step | wrun_01M1CV96WXD5N02VNRNVSE7PF4
  • 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_01M1CV9QSR19RPC42E3P96RBXN
  • Calculator.calculate - static workflow method using static step methods from another class | wrun_01M1CV9YQEY72NTQJGAR813AC5
  • AllInOneService.processNumber - static workflow method using sibling static step methods | wrun_01M1CVA4VJ1NV5S3Q4RGD1G161
  • ChainableService.processWithThis - static step methods using this to reference the class | wrun_01M1CVAAWENCXZDM9GEFEJQKD4
  • thisSerializationWorkflow - step function invoked with .call() and .apply() | wrun_01M1CVAJ6E397ZJZQSXKNEAEYW
  • customSerializationWorkflow - custom class serialization with WORKFLOW_SERIALIZE/WORKFLOW_DESERIALIZE | wrun_01M1CVASJ48AXFCJZGV5Z10EHS
  • instanceMethodStepWorkflow - instance methods with "use step" directive | wrun_01M1CVB141FVW96K1HKNAC1PDN
  • crossContextSerdeWorkflow - classes defined in step code are deserializable in workflow context | wrun_01M1CVBDFE0EFX5MS0K99WC42X
  • stepFunctionAsStartArgWorkflow - step function reference passed as start() argument | wrun_01M1CVBNZR5XDCFMVK00JZZ5MK
  • cancelRun - cancelling a running workflow | wrun_01M1CVBXAM3Q7CWZQYM7P5MM3V
  • cancelRun via CLI - cancelling a running workflow | wrun_01M1CVC2FGT0X78QG1WPA922DH
  • 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_01M1CVCARYF6RMDW9ZB2AHWFPB
  • hookWithSleepFinalStepWorkflow - step only on final payload | wrun_01M1CVCQ3510E0FBQQQXZB7QJ3
  • sleepInLoopWorkflow - sleep inside loop with steps actually delays each iteration | wrun_01M1CVD0N32V3V0AJTA45VJ4KW
  • sleepWithSequentialStepsWorkflow - sequential steps work with concurrent sleep (control) | wrun_01M1CVDBM40MXAM6SDPZBCW8V0
  • importMetaUrlWorkflow - import.meta.url is available in step bundles | wrun_01M1CVDJVYDQ2BKNNQQ48DNFKD
  • metadataFromHelperWorkflow - getWorkflowMetadata/getStepMetadata work from module-level helper (#1577) | wrun_01M1CVDNA6CJH9YV3V18A902Y8
  • resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01M1CVDQQMQAJGFJE7FBPT63TT
Details by Category
✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro9908
✅ example9908
✅ express9908
✅ fastify9908
✅ hono9908
✅ nextjs-turbopack10403
✅ nextjs-webpack10403
✅ nitro9908
✅ nuxt9908
✅ sveltekit9908
✅ vite9908
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack10700
❌ 🌍 Community Worlds
AppPassedFailedSkipped
✅ mongodb-dev403
✅ redis-dev403
❌ redis67210
✅ turso-dev403
❌ turso3850
✅ 📋 Other
AppPassedFailedSkipped
✅ e2e-local-dev-nest-stable10106
✅ e2e-local-dev-tanstack-start-stable10106
✅ e2e-local-postgres-nest-stable10106
✅ e2e-local-postgres-tanstack-start-stable10106
✅ e2e-local-prod-nest-stable10106
✅ e2e-local-prod-tanstack-start-stable10106
📋 View full workflow run
@pranaygp
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closing since this only manifested in v5 in retained VM replays, but is't an issue in v4 even if it's "technically" a bug
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Backport #3879: fix(core): re-arm late-claimed hook deliveries by github-actions[bot] · Pull Request #3905 · vercel/workflow · GitHub
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Backport #3879: fix(core): re-arm late-claimed hook deliveries - #3905
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Automated backport of #3879 to stable (backport job run).
AI recommendation: This is a pure correctness fix (patch changeset) for the delivery-barrier machinery in packages/core/src/private.ts, which exists verbatim on stable — including the unarmed buffered-hook barrier, the idle safety net, and the no-op arm() on an already-retired entry that lets a run suspend before a claimed hook payload reaches workflow code. The added async-deserialization-ordering regression exercises the defect through the ordinary hook API with no retained-VM machinery, so stable is exposed to the same lost/hung delivery even though the failure was found in a retained VM. Note that packages/core/src/retained-vm-loop.test.ts does not exist on stable (retained VM is main-only), so that test file should be dropped from the cherry-pick.
Merge conflicts were resolved by AI (opencode with anthropic/claude-opus-5). Please review the conflict resolution carefully before merging.
@github-actions
fix(core): re-arm late-claimed hook deliveries (#3879)
9145e4a
* fix(core): re-arm late-claimed hook deliveries
* refactor(core): clarify delivery barrier lifecycle
Signed-off-by: Nathan Colosimo <110621881+NathanColosimo@users.noreply.github.com>
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🦋 Changeset detected
Latest commit: 9145e4a
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 16 packages
NameType
@workflow/corePatch
@workflow/buildersPatch
@workflow/cliPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/vitestPatch
@workflow/web-sharedPatch
@workflow/webPatch
workflowPatch
@workflow/world-testingPatch
@workflow/astroPatch
@workflow/nestPatch
@workflow/rollupPatch
@workflow/sveltekitPatch
@workflow/vitePatch
@workflow/nuxtPatch
Not sure what this means? Click here to learn what changesets are.
Click here if you're a maintainer who wants to add another changeset to this PR
@vercel
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The latest updates on your projects. Learn more about Vercel for GitHub.
ProjectDeploymentActionsUpdated (UTC)
example-nextjs-workflow-turbopackReadyReadyPreview, v0Aug 31, 2026 7:17pm
example-nextjs-workflow-webpackReadyReadyPreview, v0Aug 31, 2026 7:17pm
example-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-astro-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-express-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-fastify-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-hono-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-nestjs-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-nitro-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-nuxt-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-python-workflowErrorErrorv0Aug 31, 2026 7:17pm
workbench-sveltekit-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-tanstack-start-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-vite-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-docsReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-swc-playgroundReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-tarballsReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-webReadyReadyPreview, v0Aug 31, 2026 7:17pm
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🧪 E2E Test Results
❌ Some tests failed
Summary
PassedFailedSkippedTotal
✅ ▲ Vercel Production10990781177
✅ 💻 Local Development11980861284
✅ 📦 Local Production11980861284
✅ 🐘 Local Postgres11980861284
✅ 🪟 Windows10700107
❌ 🌍 Community Worlds821069197
✅ 📋 Other606036642
Total54881063815975
❌ Failed Tests
🌍 Community Worlds (106 failed)
redis (21 failed):
  • hookWorkflow | wrun_01M1CTV89F40HCCQ711TYTKD1X
  • hookWorkflow is not resumable via public webhook endpoint | wrun_01M1CTVF3G418CEBDDP6675VZ6
  • parallelStepsThenWebhookWorkflow - no hook_conflict from same-tick replay race | wrun_01M1CTVRZWBEG68NQFHJC8S06D
  • sleepingWorkflow | wrun_01M1CTWR4HTMJDTCW0ZVVXPSJH
  • outputStreamWorkflow negative startIndex (reads from end)
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns correct index after stream completes
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns -1 before any chunks are written
  • outputStreamWorkflow - getTailIndex and getStreamChunks getStreamChunks returns same content as reading the stream
  • error handling serialization failures step-argument serialization failure is catchable in workflow code
  • error handling serialization failures uncaught step-argument serialization failure fails the run as USER_ERROR without redelivery retries
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01M1CV53B15HQJBNWJMAB46EAD
  • hookGetConflictWorkflow - awaiting hook.getConflict() registers hook without payload | wrun_01M1CV5HBGQJCQZ6B9H2MSSJM7
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps | wrun_01M1CV5SFB9K6Q7VDWJKC707JD
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_01M1CV674ZN48849G6CG8J278M
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data | wrun_01M1CV73TRW50GY0TT9WPFY1HT
  • hookAdoptOwnerResultWorkflow - duplicate adopts the owner result via conflict.returnValue | wrun_01M1CV7840A1M2Z10HPTKJPB7Z
  • hookSignalOwnerWorkflow - duplicate forwards its payload to the owner via resumeHook | wrun_01M1CV7EZV8GZXC34CEVV71C2V
  • hookSupersedeOwnerWorkflow - duplicate cancels the owner and claims the released token | wrun_01M1CV7KADCB0E96HR9KNWTQT1
  • resume-or-start route pattern - resumeHook retried after start() reaches the new run | wrun_01M1CV7WF63Z20FV095ZTRKGZR
  • pages router sleepingWorkflow via pages router
  • resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01M1CVDQQMQAJGFJE7FBPT63TT
turso (85 failed):
  • addTenWorkflow | wrun_01M1CTTA4X1RHBEBFJFP0XW290
  • addTenWorkflow | wrun_01M1CTTA4X1RHBEBFJFP0XW290
  • deploymentId: 'latest' is a no-op in non-Vercel worlds
  • wellKnownAgentWorkflow (.well-known/agent) | wrun_01M1CTTGZPYD8D1M1SGBYKYW4G
  • should work with react rendering in step
  • promiseAllWorkflow | wrun_01M1CTTHD8X5EW9HS4S9GEQ2MJ
  • promiseRaceWorkflow | wrun_01M1CTTPDYJRZ97TSZQRAZZ0VV
  • promiseAnyWorkflow | wrun_01M1CTTRYZ3ET8MCMNE56S5KQH
  • importedStepOnlyWorkflow | wrun_01M1CTTVSFNVD0333BX5GD6SHF
  • readableStreamWorkflow | wrun_01M1CTTVAHX0Q1VWPAAK0MHRPS
  • hookWorkflow | wrun_01M1CTV89F40HCCQ711TYTKD1X
  • hookWorkflow is not resumable via public webhook endpoint | wrun_01M1CTVF3G418CEBDDP6675VZ6
  • webhookWorkflow | wrun_01M1CTVM3H0P6NBCF4RJ96CVRA
  • parallelStepsThenWebhookWorkflow - no hook_conflict from same-tick replay race | wrun_01M1CTVRZWBEG68NQFHJC8S06D
  • sleepingWorkflow | wrun_01M1CTWR4HTMJDTCW0ZVVXPSJH
  • parallelSleepWorkflow | wrun_01M1CTX84ZAV42GM449B1FYT2R
  • sleepWinsRaceWorkflow | wrun_01M1CTXBRN6KR3AFASTKEJ67Q4
  • stepWinsRaceWorkflow | wrun_01M1CTXFEGKH62EB6F3BKTWJT2
  • nullByteWorkflow | wrun_01M1CTXJZQBKSTQE2AH6E22YSR
  • workflowAndStepMetadataWorkflow | wrun_01M1CTXNCK1NJG649SQSGWWK73
  • outputStreamWorkflow no startIndex (reads all chunks)
  • outputStreamWorkflow positive startIndex (skips first chunk)
  • outputStreamWorkflow negative startIndex (reads from end)
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns correct index after stream completes
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns -1 before any chunks are written
  • outputStreamWorkflow - getTailIndex and getStreamChunks getStreamChunks returns same content as reading the stream
  • outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_01M1CTZY2AFJCCJ6BV61WTHTQ9
  • writableForwardedFromWorkflowWorkflow | wrun_01M1CV0AW9T5022NVPTEYZXZ4F
  • writableForwardedFromStepWorkflow | wrun_01M1CV0E0AH938BDRG6XYM46B2
  • fetchWorkflow | wrun_01M1CV0GXS83RD8JVDW34WHPMH
  • promiseRaceStressTestWorkflow | wrun_01M1CV0MDJXNKHY0YWKJ0RH1VR
  • 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 serialization failures step-argument serialization failure is catchable in workflow code
  • error handling serialization failures uncaught step-argument serialization failure fails the run as USER_ERROR without redelivery retries
  • 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_01M1CV4N8WHK9A39B0QXR4828N
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01M1CV53B15HQJBNWJMAB46EAD
  • hookGetConflictWorkflow - awaiting hook.getConflict() registers hook without payload | wrun_01M1CV5HBGQJCQZ6B9H2MSSJM7
  • 'hookGetConflictWithPriorStepWorkflow' - hook.getConflict() does not block step execution | wrun_01M1CV5M2JQ5JP1V95Y0XF1C60
  • 'hookGetConflictWithParallelStepWorkfl…' - hook.getConflict() does not block step execution | wrun_01M1CV5PP8TGMTASZN1FTDRPMP
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps | wrun_01M1CV5SFB9K6Q7VDWJKC707JD
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_01M1CV674ZN48849G6CG8J278M
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data | wrun_01M1CV73TRW50GY0TT9WPFY1HT
  • hookAdoptOwnerResultWorkflow - duplicate adopts the owner result via conflict.returnValue | wrun_01M1CV7840A1M2Z10HPTKJPB7Z
  • hookSignalOwnerWorkflow - duplicate forwards its payload to the owner via resumeHook | wrun_01M1CV7EZV8GZXC34CEVV71C2V
  • hookSupersedeOwnerWorkflow - duplicate cancels the owner and claims the released token | wrun_01M1CV7KADCB0E96HR9KNWTQT1
  • resume-or-start route pattern - resumeHook retried after start() reaches the new run | wrun_01M1CV7WF63Z20FV095ZTRKGZR
  • hookDisposeTestWorkflow - hook token reuse after explicit disposal while workflow still running | wrun_01M1CV83N1CJ54BQ83R1EX6AFY
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars) | wrun_01M1CV8M08DXY5819TG7RMJAT2
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument | wrun_01M1CV8Y7JMBH3MX1XT7HGDPVC
  • closureVariableWorkflow - nested step functions with closure variables | wrun_01M1CV94J8GXC2XNAK6NZAGM1T
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step | wrun_01M1CV96WXD5N02VNRNVSE7PF4
  • 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_01M1CV9QSR19RPC42E3P96RBXN
  • Calculator.calculate - static workflow method using static step methods from another class | wrun_01M1CV9YQEY72NTQJGAR813AC5
  • AllInOneService.processNumber - static workflow method using sibling static step methods | wrun_01M1CVA4VJ1NV5S3Q4RGD1G161
  • ChainableService.processWithThis - static step methods using this to reference the class | wrun_01M1CVAAWENCXZDM9GEFEJQKD4
  • thisSerializationWorkflow - step function invoked with .call() and .apply() | wrun_01M1CVAJ6E397ZJZQSXKNEAEYW
  • customSerializationWorkflow - custom class serialization with WORKFLOW_SERIALIZE/WORKFLOW_DESERIALIZE | wrun_01M1CVASJ48AXFCJZGV5Z10EHS
  • instanceMethodStepWorkflow - instance methods with "use step" directive | wrun_01M1CVB141FVW96K1HKNAC1PDN
  • crossContextSerdeWorkflow - classes defined in step code are deserializable in workflow context | wrun_01M1CVBDFE0EFX5MS0K99WC42X
  • stepFunctionAsStartArgWorkflow - step function reference passed as start() argument | wrun_01M1CVBNZR5XDCFMVK00JZZ5MK
  • cancelRun - cancelling a running workflow | wrun_01M1CVBXAM3Q7CWZQYM7P5MM3V
  • cancelRun via CLI - cancelling a running workflow | wrun_01M1CVC2FGT0X78QG1WPA922DH
  • 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_01M1CVCARYF6RMDW9ZB2AHWFPB
  • hookWithSleepFinalStepWorkflow - step only on final payload | wrun_01M1CVCQ3510E0FBQQQXZB7QJ3
  • sleepInLoopWorkflow - sleep inside loop with steps actually delays each iteration | wrun_01M1CVD0N32V3V0AJTA45VJ4KW
  • sleepWithSequentialStepsWorkflow - sequential steps work with concurrent sleep (control) | wrun_01M1CVDBM40MXAM6SDPZBCW8V0
  • importMetaUrlWorkflow - import.meta.url is available in step bundles | wrun_01M1CVDJVYDQ2BKNNQQ48DNFKD
  • metadataFromHelperWorkflow - getWorkflowMetadata/getStepMetadata work from module-level helper (#1577) | wrun_01M1CVDNA6CJH9YV3V18A902Y8
  • resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01M1CVDQQMQAJGFJE7FBPT63TT
Details by Category
✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro9908
✅ example9908
✅ express9908
✅ fastify9908
✅ hono9908
✅ nextjs-turbopack10403
✅ nextjs-webpack10403
✅ nitro9908
✅ nuxt9908
✅ sveltekit9908
✅ vite9908
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack10700
❌ 🌍 Community Worlds
AppPassedFailedSkipped
✅ mongodb-dev403
✅ redis-dev403
❌ redis67210
✅ turso-dev403
❌ turso3850
✅ 📋 Other
AppPassedFailedSkipped
✅ e2e-local-dev-nest-stable10106
✅ e2e-local-dev-tanstack-start-stable10106
✅ e2e-local-postgres-nest-stable10106
✅ e2e-local-postgres-tanstack-start-stable10106
✅ e2e-local-prod-nest-stable10106
✅ e2e-local-prod-tanstack-start-stable10106
📋 View full workflow run
@pranaygp
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closing since this only manifested in v5 in retained VM replays, but is't an issue in v4 even if it's "technically" a bug
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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" + '
Backport #3879: fix(core): re-arm late-claimed hook deliveries by github-actions[bot] · Pull Request #3905 · vercel/workflow · GitHub
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Backport #3879: fix(core): re-arm late-claimed hook deliveries - #3905
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@github-actions
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Automated backport of #3879 to stable (backport job run).
AI recommendation: This is a pure correctness fix (patch changeset) for the delivery-barrier machinery in packages/core/src/private.ts, which exists verbatim on stable — including the unarmed buffered-hook barrier, the idle safety net, and the no-op arm() on an already-retired entry that lets a run suspend before a claimed hook payload reaches workflow code. The added async-deserialization-ordering regression exercises the defect through the ordinary hook API with no retained-VM machinery, so stable is exposed to the same lost/hung delivery even though the failure was found in a retained VM. Note that packages/core/src/retained-vm-loop.test.ts does not exist on stable (retained VM is main-only), so that test file should be dropped from the cherry-pick.
Merge conflicts were resolved by AI (opencode with anthropic/claude-opus-5). Please review the conflict resolution carefully before merging.
@github-actions
fix(core): re-arm late-claimed hook deliveries (#3879)
9145e4a
* fix(core): re-arm late-claimed hook deliveries
* refactor(core): clarify delivery barrier lifecycle
Signed-off-by: Nathan Colosimo <110621881+NathanColosimo@users.noreply.github.com>
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Aug 31, 2026
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@changeset-bot
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Aug 31, 2026

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🦋 Changeset detected
Latest commit: 9145e4a
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 16 packages
NameType
@workflow/corePatch
@workflow/buildersPatch
@workflow/cliPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/vitestPatch
@workflow/web-sharedPatch
@workflow/webPatch
workflowPatch
@workflow/world-testingPatch
@workflow/astroPatch
@workflow/nestPatch
@workflow/rollupPatch
@workflow/sveltekitPatch
@workflow/vitePatch
@workflow/nuxtPatch
Not sure what this means? Click here to learn what changesets are.
Click here if you're a maintainer who wants to add another changeset to this PR
@vercel
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Aug 31, 2026•

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The latest updates on your projects. Learn more about Vercel for GitHub.
ProjectDeploymentActionsUpdated (UTC)
example-nextjs-workflow-turbopackReadyReadyPreview, v0Aug 31, 2026 7:17pm
example-nextjs-workflow-webpackReadyReadyPreview, v0Aug 31, 2026 7:17pm
example-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-astro-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-express-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-fastify-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-hono-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-nestjs-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-nitro-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-nuxt-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-python-workflowErrorErrorv0Aug 31, 2026 7:17pm
workbench-sveltekit-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-tanstack-start-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-vite-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-docsReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-swc-playgroundReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-tarballsReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-webReadyReadyPreview, v0Aug 31, 2026 7:17pm
@github-actions
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Aug 31, 2026•

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🧪 E2E Test Results
❌ Some tests failed
Summary
PassedFailedSkippedTotal
✅ ▲ Vercel Production10990781177
✅ 💻 Local Development11980861284
✅ 📦 Local Production11980861284
✅ 🐘 Local Postgres11980861284
✅ 🪟 Windows10700107
❌ 🌍 Community Worlds821069197
✅ 📋 Other606036642
Total54881063815975
❌ Failed Tests
🌍 Community Worlds (106 failed)
redis (21 failed):
  • hookWorkflow | wrun_01M1CTV89F40HCCQ711TYTKD1X
  • hookWorkflow is not resumable via public webhook endpoint | wrun_01M1CTVF3G418CEBDDP6675VZ6
  • parallelStepsThenWebhookWorkflow - no hook_conflict from same-tick replay race | wrun_01M1CTVRZWBEG68NQFHJC8S06D
  • sleepingWorkflow | wrun_01M1CTWR4HTMJDTCW0ZVVXPSJH
  • outputStreamWorkflow negative startIndex (reads from end)
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns correct index after stream completes
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns -1 before any chunks are written
  • outputStreamWorkflow - getTailIndex and getStreamChunks getStreamChunks returns same content as reading the stream
  • error handling serialization failures step-argument serialization failure is catchable in workflow code
  • error handling serialization failures uncaught step-argument serialization failure fails the run as USER_ERROR without redelivery retries
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01M1CV53B15HQJBNWJMAB46EAD
  • hookGetConflictWorkflow - awaiting hook.getConflict() registers hook without payload | wrun_01M1CV5HBGQJCQZ6B9H2MSSJM7
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps | wrun_01M1CV5SFB9K6Q7VDWJKC707JD
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_01M1CV674ZN48849G6CG8J278M
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data | wrun_01M1CV73TRW50GY0TT9WPFY1HT
  • hookAdoptOwnerResultWorkflow - duplicate adopts the owner result via conflict.returnValue | wrun_01M1CV7840A1M2Z10HPTKJPB7Z
  • hookSignalOwnerWorkflow - duplicate forwards its payload to the owner via resumeHook | wrun_01M1CV7EZV8GZXC34CEVV71C2V
  • hookSupersedeOwnerWorkflow - duplicate cancels the owner and claims the released token | wrun_01M1CV7KADCB0E96HR9KNWTQT1
  • resume-or-start route pattern - resumeHook retried after start() reaches the new run | wrun_01M1CV7WF63Z20FV095ZTRKGZR
  • pages router sleepingWorkflow via pages router
  • resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01M1CVDQQMQAJGFJE7FBPT63TT
turso (85 failed):
  • addTenWorkflow | wrun_01M1CTTA4X1RHBEBFJFP0XW290
  • addTenWorkflow | wrun_01M1CTTA4X1RHBEBFJFP0XW290
  • deploymentId: 'latest' is a no-op in non-Vercel worlds
  • wellKnownAgentWorkflow (.well-known/agent) | wrun_01M1CTTGZPYD8D1M1SGBYKYW4G
  • should work with react rendering in step
  • promiseAllWorkflow | wrun_01M1CTTHD8X5EW9HS4S9GEQ2MJ
  • promiseRaceWorkflow | wrun_01M1CTTPDYJRZ97TSZQRAZZ0VV
  • promiseAnyWorkflow | wrun_01M1CTTRYZ3ET8MCMNE56S5KQH
  • importedStepOnlyWorkflow | wrun_01M1CTTVSFNVD0333BX5GD6SHF
  • readableStreamWorkflow | wrun_01M1CTTVAHX0Q1VWPAAK0MHRPS
  • hookWorkflow | wrun_01M1CTV89F40HCCQ711TYTKD1X
  • hookWorkflow is not resumable via public webhook endpoint | wrun_01M1CTVF3G418CEBDDP6675VZ6
  • webhookWorkflow | wrun_01M1CTVM3H0P6NBCF4RJ96CVRA
  • parallelStepsThenWebhookWorkflow - no hook_conflict from same-tick replay race | wrun_01M1CTVRZWBEG68NQFHJC8S06D
  • sleepingWorkflow | wrun_01M1CTWR4HTMJDTCW0ZVVXPSJH
  • parallelSleepWorkflow | wrun_01M1CTX84ZAV42GM449B1FYT2R
  • sleepWinsRaceWorkflow | wrun_01M1CTXBRN6KR3AFASTKEJ67Q4
  • stepWinsRaceWorkflow | wrun_01M1CTXFEGKH62EB6F3BKTWJT2
  • nullByteWorkflow | wrun_01M1CTXJZQBKSTQE2AH6E22YSR
  • workflowAndStepMetadataWorkflow | wrun_01M1CTXNCK1NJG649SQSGWWK73
  • outputStreamWorkflow no startIndex (reads all chunks)
  • outputStreamWorkflow positive startIndex (skips first chunk)
  • outputStreamWorkflow negative startIndex (reads from end)
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns correct index after stream completes
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns -1 before any chunks are written
  • outputStreamWorkflow - getTailIndex and getStreamChunks getStreamChunks returns same content as reading the stream
  • outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_01M1CTZY2AFJCCJ6BV61WTHTQ9
  • writableForwardedFromWorkflowWorkflow | wrun_01M1CV0AW9T5022NVPTEYZXZ4F
  • writableForwardedFromStepWorkflow | wrun_01M1CV0E0AH938BDRG6XYM46B2
  • fetchWorkflow | wrun_01M1CV0GXS83RD8JVDW34WHPMH
  • promiseRaceStressTestWorkflow | wrun_01M1CV0MDJXNKHY0YWKJ0RH1VR
  • 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 serialization failures step-argument serialization failure is catchable in workflow code
  • error handling serialization failures uncaught step-argument serialization failure fails the run as USER_ERROR without redelivery retries
  • 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_01M1CV4N8WHK9A39B0QXR4828N
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01M1CV53B15HQJBNWJMAB46EAD
  • hookGetConflictWorkflow - awaiting hook.getConflict() registers hook without payload | wrun_01M1CV5HBGQJCQZ6B9H2MSSJM7
  • 'hookGetConflictWithPriorStepWorkflow' - hook.getConflict() does not block step execution | wrun_01M1CV5M2JQ5JP1V95Y0XF1C60
  • 'hookGetConflictWithParallelStepWorkfl…' - hook.getConflict() does not block step execution | wrun_01M1CV5PP8TGMTASZN1FTDRPMP
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps | wrun_01M1CV5SFB9K6Q7VDWJKC707JD
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_01M1CV674ZN48849G6CG8J278M
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data | wrun_01M1CV73TRW50GY0TT9WPFY1HT
  • hookAdoptOwnerResultWorkflow - duplicate adopts the owner result via conflict.returnValue | wrun_01M1CV7840A1M2Z10HPTKJPB7Z
  • hookSignalOwnerWorkflow - duplicate forwards its payload to the owner via resumeHook | wrun_01M1CV7EZV8GZXC34CEVV71C2V
  • hookSupersedeOwnerWorkflow - duplicate cancels the owner and claims the released token | wrun_01M1CV7KADCB0E96HR9KNWTQT1
  • resume-or-start route pattern - resumeHook retried after start() reaches the new run | wrun_01M1CV7WF63Z20FV095ZTRKGZR
  • hookDisposeTestWorkflow - hook token reuse after explicit disposal while workflow still running | wrun_01M1CV83N1CJ54BQ83R1EX6AFY
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars) | wrun_01M1CV8M08DXY5819TG7RMJAT2
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument | wrun_01M1CV8Y7JMBH3MX1XT7HGDPVC
  • closureVariableWorkflow - nested step functions with closure variables | wrun_01M1CV94J8GXC2XNAK6NZAGM1T
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step | wrun_01M1CV96WXD5N02VNRNVSE7PF4
  • 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_01M1CV9QSR19RPC42E3P96RBXN
  • Calculator.calculate - static workflow method using static step methods from another class | wrun_01M1CV9YQEY72NTQJGAR813AC5
  • AllInOneService.processNumber - static workflow method using sibling static step methods | wrun_01M1CVA4VJ1NV5S3Q4RGD1G161
  • ChainableService.processWithThis - static step methods using this to reference the class | wrun_01M1CVAAWENCXZDM9GEFEJQKD4
  • thisSerializationWorkflow - step function invoked with .call() and .apply() | wrun_01M1CVAJ6E397ZJZQSXKNEAEYW
  • customSerializationWorkflow - custom class serialization with WORKFLOW_SERIALIZE/WORKFLOW_DESERIALIZE | wrun_01M1CVASJ48AXFCJZGV5Z10EHS
  • instanceMethodStepWorkflow - instance methods with "use step" directive | wrun_01M1CVB141FVW96K1HKNAC1PDN
  • crossContextSerdeWorkflow - classes defined in step code are deserializable in workflow context | wrun_01M1CVBDFE0EFX5MS0K99WC42X
  • stepFunctionAsStartArgWorkflow - step function reference passed as start() argument | wrun_01M1CVBNZR5XDCFMVK00JZZ5MK
  • cancelRun - cancelling a running workflow | wrun_01M1CVBXAM3Q7CWZQYM7P5MM3V
  • cancelRun via CLI - cancelling a running workflow | wrun_01M1CVC2FGT0X78QG1WPA922DH
  • 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_01M1CVCARYF6RMDW9ZB2AHWFPB
  • hookWithSleepFinalStepWorkflow - step only on final payload | wrun_01M1CVCQ3510E0FBQQQXZB7QJ3
  • sleepInLoopWorkflow - sleep inside loop with steps actually delays each iteration | wrun_01M1CVD0N32V3V0AJTA45VJ4KW
  • sleepWithSequentialStepsWorkflow - sequential steps work with concurrent sleep (control) | wrun_01M1CVDBM40MXAM6SDPZBCW8V0
  • importMetaUrlWorkflow - import.meta.url is available in step bundles | wrun_01M1CVDJVYDQ2BKNNQQ48DNFKD
  • metadataFromHelperWorkflow - getWorkflowMetadata/getStepMetadata work from module-level helper (#1577) | wrun_01M1CVDNA6CJH9YV3V18A902Y8
  • resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01M1CVDQQMQAJGFJE7FBPT63TT
Details by Category
✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro9908
✅ example9908
✅ express9908
✅ fastify9908
✅ hono9908
✅ nextjs-turbopack10403
✅ nextjs-webpack10403
✅ nitro9908
✅ nuxt9908
✅ sveltekit9908
✅ vite9908
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack10700
❌ 🌍 Community Worlds
AppPassedFailedSkipped
✅ mongodb-dev403
✅ redis-dev403
❌ redis67210
✅ turso-dev403
❌ turso3850
✅ 📋 Other
AppPassedFailedSkipped
✅ e2e-local-dev-nest-stable10106
✅ e2e-local-dev-tanstack-start-stable10106
✅ e2e-local-postgres-nest-stable10106
✅ e2e-local-postgres-tanstack-start-stable10106
✅ e2e-local-prod-nest-stable10106
✅ e2e-local-prod-tanstack-start-stable10106
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closing since this only manifested in v5 in retained VM replays, but is't an issue in v4 even if it's "technically" a bug
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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('^' + ".*" + '
Backport #3879: fix(core): re-arm late-claimed hook deliveries by github-actions[bot] · Pull Request #3905 · vercel/workflow · GitHub
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Backport #3879: fix(core): re-arm late-claimed hook deliveries - #3905
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Backport #3879: fix(core): re-arm late-claimed hook deliveries#3905
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Automated backport of #3879 to stable (backport job run).
AI recommendation: This is a pure correctness fix (patch changeset) for the delivery-barrier machinery in packages/core/src/private.ts, which exists verbatim on stable — including the unarmed buffered-hook barrier, the idle safety net, and the no-op arm() on an already-retired entry that lets a run suspend before a claimed hook payload reaches workflow code. The added async-deserialization-ordering regression exercises the defect through the ordinary hook API with no retained-VM machinery, so stable is exposed to the same lost/hung delivery even though the failure was found in a retained VM. Note that packages/core/src/retained-vm-loop.test.ts does not exist on stable (retained VM is main-only), so that test file should be dropped from the cherry-pick.
Merge conflicts were resolved by AI (opencode with anthropic/claude-opus-5). Please review the conflict resolution carefully before merging.
@github-actions
fix(core): re-arm late-claimed hook deliveries (#3879)
9145e4a
* fix(core): re-arm late-claimed hook deliveries
* refactor(core): clarify delivery barrier lifecycle
Signed-off-by: Nathan Colosimo <110621881+NathanColosimo@users.noreply.github.com>
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🦋 Changeset detected
Latest commit: 9145e4a
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 16 packages
NameType
@workflow/corePatch
@workflow/buildersPatch
@workflow/cliPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/vitestPatch
@workflow/web-sharedPatch
@workflow/webPatch
workflowPatch
@workflow/world-testingPatch
@workflow/astroPatch
@workflow/nestPatch
@workflow/rollupPatch
@workflow/sveltekitPatch
@workflow/vitePatch
@workflow/nuxtPatch
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ProjectDeploymentActionsUpdated (UTC)
example-nextjs-workflow-turbopackReadyReadyPreview, v0Aug 31, 2026 7:17pm
example-nextjs-workflow-webpackReadyReadyPreview, v0Aug 31, 2026 7:17pm
example-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-astro-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-express-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-fastify-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-hono-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-nestjs-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-nitro-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
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workbench-tanstack-start-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-vite-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-docsReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-swc-playgroundReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-tarballsReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-webReadyReadyPreview, v0Aug 31, 2026 7:17pm
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🧪 E2E Test Results
❌ Some tests failed
Summary
PassedFailedSkippedTotal
✅ ▲ Vercel Production10990781177
✅ 💻 Local Development11980861284
✅ 📦 Local Production11980861284
✅ 🐘 Local Postgres11980861284
✅ 🪟 Windows10700107
❌ 🌍 Community Worlds821069197
✅ 📋 Other606036642
Total54881063815975
❌ Failed Tests
🌍 Community Worlds (106 failed)
redis (21 failed):
  • hookWorkflow | wrun_01M1CTV89F40HCCQ711TYTKD1X
  • hookWorkflow is not resumable via public webhook endpoint | wrun_01M1CTVF3G418CEBDDP6675VZ6
  • parallelStepsThenWebhookWorkflow - no hook_conflict from same-tick replay race | wrun_01M1CTVRZWBEG68NQFHJC8S06D
  • sleepingWorkflow | wrun_01M1CTWR4HTMJDTCW0ZVVXPSJH
  • outputStreamWorkflow negative startIndex (reads from end)
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns correct index after stream completes
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns -1 before any chunks are written
  • outputStreamWorkflow - getTailIndex and getStreamChunks getStreamChunks returns same content as reading the stream
  • error handling serialization failures step-argument serialization failure is catchable in workflow code
  • error handling serialization failures uncaught step-argument serialization failure fails the run as USER_ERROR without redelivery retries
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01M1CV53B15HQJBNWJMAB46EAD
  • hookGetConflictWorkflow - awaiting hook.getConflict() registers hook without payload | wrun_01M1CV5HBGQJCQZ6B9H2MSSJM7
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps | wrun_01M1CV5SFB9K6Q7VDWJKC707JD
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_01M1CV674ZN48849G6CG8J278M
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data | wrun_01M1CV73TRW50GY0TT9WPFY1HT
  • hookAdoptOwnerResultWorkflow - duplicate adopts the owner result via conflict.returnValue | wrun_01M1CV7840A1M2Z10HPTKJPB7Z
  • hookSignalOwnerWorkflow - duplicate forwards its payload to the owner via resumeHook | wrun_01M1CV7EZV8GZXC34CEVV71C2V
  • hookSupersedeOwnerWorkflow - duplicate cancels the owner and claims the released token | wrun_01M1CV7KADCB0E96HR9KNWTQT1
  • resume-or-start route pattern - resumeHook retried after start() reaches the new run | wrun_01M1CV7WF63Z20FV095ZTRKGZR
  • pages router sleepingWorkflow via pages router
  • resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01M1CVDQQMQAJGFJE7FBPT63TT
turso (85 failed):
  • addTenWorkflow | wrun_01M1CTTA4X1RHBEBFJFP0XW290
  • addTenWorkflow | wrun_01M1CTTA4X1RHBEBFJFP0XW290
  • deploymentId: 'latest' is a no-op in non-Vercel worlds
  • wellKnownAgentWorkflow (.well-known/agent) | wrun_01M1CTTGZPYD8D1M1SGBYKYW4G
  • should work with react rendering in step
  • promiseAllWorkflow | wrun_01M1CTTHD8X5EW9HS4S9GEQ2MJ
  • promiseRaceWorkflow | wrun_01M1CTTPDYJRZ97TSZQRAZZ0VV
  • promiseAnyWorkflow | wrun_01M1CTTRYZ3ET8MCMNE56S5KQH
  • importedStepOnlyWorkflow | wrun_01M1CTTVSFNVD0333BX5GD6SHF
  • readableStreamWorkflow | wrun_01M1CTTVAHX0Q1VWPAAK0MHRPS
  • hookWorkflow | wrun_01M1CTV89F40HCCQ711TYTKD1X
  • hookWorkflow is not resumable via public webhook endpoint | wrun_01M1CTVF3G418CEBDDP6675VZ6
  • webhookWorkflow | wrun_01M1CTVM3H0P6NBCF4RJ96CVRA
  • parallelStepsThenWebhookWorkflow - no hook_conflict from same-tick replay race | wrun_01M1CTVRZWBEG68NQFHJC8S06D
  • sleepingWorkflow | wrun_01M1CTWR4HTMJDTCW0ZVVXPSJH
  • parallelSleepWorkflow | wrun_01M1CTX84ZAV42GM449B1FYT2R
  • sleepWinsRaceWorkflow | wrun_01M1CTXBRN6KR3AFASTKEJ67Q4
  • stepWinsRaceWorkflow | wrun_01M1CTXFEGKH62EB6F3BKTWJT2
  • nullByteWorkflow | wrun_01M1CTXJZQBKSTQE2AH6E22YSR
  • workflowAndStepMetadataWorkflow | wrun_01M1CTXNCK1NJG649SQSGWWK73
  • outputStreamWorkflow no startIndex (reads all chunks)
  • outputStreamWorkflow positive startIndex (skips first chunk)
  • outputStreamWorkflow negative startIndex (reads from end)
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns correct index after stream completes
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns -1 before any chunks are written
  • outputStreamWorkflow - getTailIndex and getStreamChunks getStreamChunks returns same content as reading the stream
  • outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_01M1CTZY2AFJCCJ6BV61WTHTQ9
  • writableForwardedFromWorkflowWorkflow | wrun_01M1CV0AW9T5022NVPTEYZXZ4F
  • writableForwardedFromStepWorkflow | wrun_01M1CV0E0AH938BDRG6XYM46B2
  • fetchWorkflow | wrun_01M1CV0GXS83RD8JVDW34WHPMH
  • promiseRaceStressTestWorkflow | wrun_01M1CV0MDJXNKHY0YWKJ0RH1VR
  • 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 serialization failures step-argument serialization failure is catchable in workflow code
  • error handling serialization failures uncaught step-argument serialization failure fails the run as USER_ERROR without redelivery retries
  • 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_01M1CV4N8WHK9A39B0QXR4828N
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01M1CV53B15HQJBNWJMAB46EAD
  • hookGetConflictWorkflow - awaiting hook.getConflict() registers hook without payload | wrun_01M1CV5HBGQJCQZ6B9H2MSSJM7
  • 'hookGetConflictWithPriorStepWorkflow' - hook.getConflict() does not block step execution | wrun_01M1CV5M2JQ5JP1V95Y0XF1C60
  • 'hookGetConflictWithParallelStepWorkfl…' - hook.getConflict() does not block step execution | wrun_01M1CV5PP8TGMTASZN1FTDRPMP
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps | wrun_01M1CV5SFB9K6Q7VDWJKC707JD
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_01M1CV674ZN48849G6CG8J278M
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data | wrun_01M1CV73TRW50GY0TT9WPFY1HT
  • hookAdoptOwnerResultWorkflow - duplicate adopts the owner result via conflict.returnValue | wrun_01M1CV7840A1M2Z10HPTKJPB7Z
  • hookSignalOwnerWorkflow - duplicate forwards its payload to the owner via resumeHook | wrun_01M1CV7EZV8GZXC34CEVV71C2V
  • hookSupersedeOwnerWorkflow - duplicate cancels the owner and claims the released token | wrun_01M1CV7KADCB0E96HR9KNWTQT1
  • resume-or-start route pattern - resumeHook retried after start() reaches the new run | wrun_01M1CV7WF63Z20FV095ZTRKGZR
  • hookDisposeTestWorkflow - hook token reuse after explicit disposal while workflow still running | wrun_01M1CV83N1CJ54BQ83R1EX6AFY
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars) | wrun_01M1CV8M08DXY5819TG7RMJAT2
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument | wrun_01M1CV8Y7JMBH3MX1XT7HGDPVC
  • closureVariableWorkflow - nested step functions with closure variables | wrun_01M1CV94J8GXC2XNAK6NZAGM1T
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step | wrun_01M1CV96WXD5N02VNRNVSE7PF4
  • 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_01M1CV9QSR19RPC42E3P96RBXN
  • Calculator.calculate - static workflow method using static step methods from another class | wrun_01M1CV9YQEY72NTQJGAR813AC5
  • AllInOneService.processNumber - static workflow method using sibling static step methods | wrun_01M1CVA4VJ1NV5S3Q4RGD1G161
  • ChainableService.processWithThis - static step methods using this to reference the class | wrun_01M1CVAAWENCXZDM9GEFEJQKD4
  • thisSerializationWorkflow - step function invoked with .call() and .apply() | wrun_01M1CVAJ6E397ZJZQSXKNEAEYW
  • customSerializationWorkflow - custom class serialization with WORKFLOW_SERIALIZE/WORKFLOW_DESERIALIZE | wrun_01M1CVASJ48AXFCJZGV5Z10EHS
  • instanceMethodStepWorkflow - instance methods with "use step" directive | wrun_01M1CVB141FVW96K1HKNAC1PDN
  • crossContextSerdeWorkflow - classes defined in step code are deserializable in workflow context | wrun_01M1CVBDFE0EFX5MS0K99WC42X
  • stepFunctionAsStartArgWorkflow - step function reference passed as start() argument | wrun_01M1CVBNZR5XDCFMVK00JZZ5MK
  • cancelRun - cancelling a running workflow | wrun_01M1CVBXAM3Q7CWZQYM7P5MM3V
  • cancelRun via CLI - cancelling a running workflow | wrun_01M1CVC2FGT0X78QG1WPA922DH
  • 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_01M1CVCARYF6RMDW9ZB2AHWFPB
  • hookWithSleepFinalStepWorkflow - step only on final payload | wrun_01M1CVCQ3510E0FBQQQXZB7QJ3
  • sleepInLoopWorkflow - sleep inside loop with steps actually delays each iteration | wrun_01M1CVD0N32V3V0AJTA45VJ4KW
  • sleepWithSequentialStepsWorkflow - sequential steps work with concurrent sleep (control) | wrun_01M1CVDBM40MXAM6SDPZBCW8V0
  • importMetaUrlWorkflow - import.meta.url is available in step bundles | wrun_01M1CVDJVYDQ2BKNNQQ48DNFKD
  • metadataFromHelperWorkflow - getWorkflowMetadata/getStepMetadata work from module-level helper (#1577) | wrun_01M1CVDNA6CJH9YV3V18A902Y8
  • resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01M1CVDQQMQAJGFJE7FBPT63TT
Details by Category
✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro9908
✅ example9908
✅ express9908
✅ fastify9908
✅ hono9908
✅ nextjs-turbopack10403
✅ nextjs-webpack10403
✅ nitro9908
✅ nuxt9908
✅ sveltekit9908
✅ vite9908
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack10700
❌ 🌍 Community Worlds
AppPassedFailedSkipped
✅ mongodb-dev403
✅ redis-dev403
❌ redis67210
✅ turso-dev403
❌ turso3850
✅ 📋 Other
AppPassedFailedSkipped
✅ e2e-local-dev-nest-stable10106
✅ e2e-local-dev-tanstack-start-stable10106
✅ e2e-local-postgres-nest-stable10106
✅ e2e-local-postgres-tanstack-start-stable10106
✅ e2e-local-prod-nest-stable10106
✅ e2e-local-prod-tanstack-start-stable10106
📋 View full workflow run
@pranaygp
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closing since this only manifested in v5 in retained VM replays, but is't an issue in v4 even if it's "technically" a bug
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
Backport #3879: fix(core): re-arm late-claimed hook deliveries by github-actions[bot] · Pull Request #3905 · vercel/workflow · GitHub
Skip to content
Backport #3879: fix(core): re-arm late-claimed hook deliveries - #3905
Closed
github-actions[bot] wants to merge 1 commit into
stablefrom 
backport/pr-3879-to-stable
Closed
Backport #3879: fix(core): re-arm late-claimed hook deliveries#3905
github-actions[bot] wants to merge 1 commit into
stablefrom 
backport/pr-3879-to-stable
Conversation
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Automated backport of #3879 to stable (backport job run).
AI recommendation: This is a pure correctness fix (patch changeset) for the delivery-barrier machinery in packages/core/src/private.ts, which exists verbatim on stable — including the unarmed buffered-hook barrier, the idle safety net, and the no-op arm() on an already-retired entry that lets a run suspend before a claimed hook payload reaches workflow code. The added async-deserialization-ordering regression exercises the defect through the ordinary hook API with no retained-VM machinery, so stable is exposed to the same lost/hung delivery even though the failure was found in a retained VM. Note that packages/core/src/retained-vm-loop.test.ts does not exist on stable (retained VM is main-only), so that test file should be dropped from the cherry-pick.
Merge conflicts were resolved by AI (opencode with anthropic/claude-opus-5). Please review the conflict resolution carefully before merging.
@github-actions
fix(core): re-arm late-claimed hook deliveries (#3879)
9145e4a
* fix(core): re-arm late-claimed hook deliveries
* refactor(core): clarify delivery barrier lifecycle
Signed-off-by: Nathan Colosimo <110621881+NathanColosimo@users.noreply.github.com>
@github-actions
github-actionsBot
requested review from
a team and ijjk
as code ownersAugust 31, 2026 19:12
@github-actionsgithub-actionsBot
mentioned this pull request
Aug 31, 2026
 Merged

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🦋 Changeset detected
Latest commit: 9145e4a
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 16 packages
NameType
@workflow/corePatch
@workflow/buildersPatch
@workflow/cliPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/vitestPatch
@workflow/web-sharedPatch
@workflow/webPatch
workflowPatch
@workflow/world-testingPatch
@workflow/astroPatch
@workflow/nestPatch
@workflow/rollupPatch
@workflow/sveltekitPatch
@workflow/vitePatch
@workflow/nuxtPatch
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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The latest updates on your projects. Learn more about Vercel for GitHub.
ProjectDeploymentActionsUpdated (UTC)
example-nextjs-workflow-turbopackReadyReadyPreview, v0Aug 31, 2026 7:17pm
example-nextjs-workflow-webpackReadyReadyPreview, v0Aug 31, 2026 7:17pm
example-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-astro-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-express-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-fastify-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-hono-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-nestjs-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-nitro-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-nuxt-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-python-workflowErrorErrorv0Aug 31, 2026 7:17pm
workbench-sveltekit-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-tanstack-start-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-vite-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-docsReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-swc-playgroundReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-tarballsReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-webReadyReadyPreview, v0Aug 31, 2026 7:17pm
@github-actions
github-actionsBot
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Aug 31, 2026•

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🧪 E2E Test Results
❌ Some tests failed
Summary
PassedFailedSkippedTotal
✅ ▲ Vercel Production10990781177
✅ 💻 Local Development11980861284
✅ 📦 Local Production11980861284
✅ 🐘 Local Postgres11980861284
✅ 🪟 Windows10700107
❌ 🌍 Community Worlds821069197
✅ 📋 Other606036642
Total54881063815975
❌ Failed Tests
🌍 Community Worlds (106 failed)
redis (21 failed):
  • hookWorkflow | wrun_01M1CTV89F40HCCQ711TYTKD1X
  • hookWorkflow is not resumable via public webhook endpoint | wrun_01M1CTVF3G418CEBDDP6675VZ6
  • parallelStepsThenWebhookWorkflow - no hook_conflict from same-tick replay race | wrun_01M1CTVRZWBEG68NQFHJC8S06D
  • sleepingWorkflow | wrun_01M1CTWR4HTMJDTCW0ZVVXPSJH
  • outputStreamWorkflow negative startIndex (reads from end)
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns correct index after stream completes
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns -1 before any chunks are written
  • outputStreamWorkflow - getTailIndex and getStreamChunks getStreamChunks returns same content as reading the stream
  • error handling serialization failures step-argument serialization failure is catchable in workflow code
  • error handling serialization failures uncaught step-argument serialization failure fails the run as USER_ERROR without redelivery retries
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01M1CV53B15HQJBNWJMAB46EAD
  • hookGetConflictWorkflow - awaiting hook.getConflict() registers hook without payload | wrun_01M1CV5HBGQJCQZ6B9H2MSSJM7
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps | wrun_01M1CV5SFB9K6Q7VDWJKC707JD
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_01M1CV674ZN48849G6CG8J278M
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data | wrun_01M1CV73TRW50GY0TT9WPFY1HT
  • hookAdoptOwnerResultWorkflow - duplicate adopts the owner result via conflict.returnValue | wrun_01M1CV7840A1M2Z10HPTKJPB7Z
  • hookSignalOwnerWorkflow - duplicate forwards its payload to the owner via resumeHook | wrun_01M1CV7EZV8GZXC34CEVV71C2V
  • hookSupersedeOwnerWorkflow - duplicate cancels the owner and claims the released token | wrun_01M1CV7KADCB0E96HR9KNWTQT1
  • resume-or-start route pattern - resumeHook retried after start() reaches the new run | wrun_01M1CV7WF63Z20FV095ZTRKGZR
  • pages router sleepingWorkflow via pages router
  • resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01M1CVDQQMQAJGFJE7FBPT63TT
turso (85 failed):
  • addTenWorkflow | wrun_01M1CTTA4X1RHBEBFJFP0XW290
  • addTenWorkflow | wrun_01M1CTTA4X1RHBEBFJFP0XW290
  • deploymentId: 'latest' is a no-op in non-Vercel worlds
  • wellKnownAgentWorkflow (.well-known/agent) | wrun_01M1CTTGZPYD8D1M1SGBYKYW4G
  • should work with react rendering in step
  • promiseAllWorkflow | wrun_01M1CTTHD8X5EW9HS4S9GEQ2MJ
  • promiseRaceWorkflow | wrun_01M1CTTPDYJRZ97TSZQRAZZ0VV
  • promiseAnyWorkflow | wrun_01M1CTTRYZ3ET8MCMNE56S5KQH
  • importedStepOnlyWorkflow | wrun_01M1CTTVSFNVD0333BX5GD6SHF
  • readableStreamWorkflow | wrun_01M1CTTVAHX0Q1VWPAAK0MHRPS
  • hookWorkflow | wrun_01M1CTV89F40HCCQ711TYTKD1X
  • hookWorkflow is not resumable via public webhook endpoint | wrun_01M1CTVF3G418CEBDDP6675VZ6
  • webhookWorkflow | wrun_01M1CTVM3H0P6NBCF4RJ96CVRA
  • parallelStepsThenWebhookWorkflow - no hook_conflict from same-tick replay race | wrun_01M1CTVRZWBEG68NQFHJC8S06D
  • sleepingWorkflow | wrun_01M1CTWR4HTMJDTCW0ZVVXPSJH
  • parallelSleepWorkflow | wrun_01M1CTX84ZAV42GM449B1FYT2R
  • sleepWinsRaceWorkflow | wrun_01M1CTXBRN6KR3AFASTKEJ67Q4
  • stepWinsRaceWorkflow | wrun_01M1CTXFEGKH62EB6F3BKTWJT2
  • nullByteWorkflow | wrun_01M1CTXJZQBKSTQE2AH6E22YSR
  • workflowAndStepMetadataWorkflow | wrun_01M1CTXNCK1NJG649SQSGWWK73
  • outputStreamWorkflow no startIndex (reads all chunks)
  • outputStreamWorkflow positive startIndex (skips first chunk)
  • outputStreamWorkflow negative startIndex (reads from end)
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns correct index after stream completes
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns -1 before any chunks are written
  • outputStreamWorkflow - getTailIndex and getStreamChunks getStreamChunks returns same content as reading the stream
  • outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_01M1CTZY2AFJCCJ6BV61WTHTQ9
  • writableForwardedFromWorkflowWorkflow | wrun_01M1CV0AW9T5022NVPTEYZXZ4F
  • writableForwardedFromStepWorkflow | wrun_01M1CV0E0AH938BDRG6XYM46B2
  • fetchWorkflow | wrun_01M1CV0GXS83RD8JVDW34WHPMH
  • promiseRaceStressTestWorkflow | wrun_01M1CV0MDJXNKHY0YWKJ0RH1VR
  • 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 serialization failures step-argument serialization failure is catchable in workflow code
  • error handling serialization failures uncaught step-argument serialization failure fails the run as USER_ERROR without redelivery retries
  • 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_01M1CV4N8WHK9A39B0QXR4828N
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01M1CV53B15HQJBNWJMAB46EAD
  • hookGetConflictWorkflow - awaiting hook.getConflict() registers hook without payload | wrun_01M1CV5HBGQJCQZ6B9H2MSSJM7
  • 'hookGetConflictWithPriorStepWorkflow' - hook.getConflict() does not block step execution | wrun_01M1CV5M2JQ5JP1V95Y0XF1C60
  • 'hookGetConflictWithParallelStepWorkfl…' - hook.getConflict() does not block step execution | wrun_01M1CV5PP8TGMTASZN1FTDRPMP
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps | wrun_01M1CV5SFB9K6Q7VDWJKC707JD
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_01M1CV674ZN48849G6CG8J278M
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data | wrun_01M1CV73TRW50GY0TT9WPFY1HT
  • hookAdoptOwnerResultWorkflow - duplicate adopts the owner result via conflict.returnValue | wrun_01M1CV7840A1M2Z10HPTKJPB7Z
  • hookSignalOwnerWorkflow - duplicate forwards its payload to the owner via resumeHook | wrun_01M1CV7EZV8GZXC34CEVV71C2V
  • hookSupersedeOwnerWorkflow - duplicate cancels the owner and claims the released token | wrun_01M1CV7KADCB0E96HR9KNWTQT1
  • resume-or-start route pattern - resumeHook retried after start() reaches the new run | wrun_01M1CV7WF63Z20FV095ZTRKGZR
  • hookDisposeTestWorkflow - hook token reuse after explicit disposal while workflow still running | wrun_01M1CV83N1CJ54BQ83R1EX6AFY
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars) | wrun_01M1CV8M08DXY5819TG7RMJAT2
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument | wrun_01M1CV8Y7JMBH3MX1XT7HGDPVC
  • closureVariableWorkflow - nested step functions with closure variables | wrun_01M1CV94J8GXC2XNAK6NZAGM1T
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step | wrun_01M1CV96WXD5N02VNRNVSE7PF4
  • 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_01M1CV9QSR19RPC42E3P96RBXN
  • Calculator.calculate - static workflow method using static step methods from another class | wrun_01M1CV9YQEY72NTQJGAR813AC5
  • AllInOneService.processNumber - static workflow method using sibling static step methods | wrun_01M1CVA4VJ1NV5S3Q4RGD1G161
  • ChainableService.processWithThis - static step methods using this to reference the class | wrun_01M1CVAAWENCXZDM9GEFEJQKD4
  • thisSerializationWorkflow - step function invoked with .call() and .apply() | wrun_01M1CVAJ6E397ZJZQSXKNEAEYW
  • customSerializationWorkflow - custom class serialization with WORKFLOW_SERIALIZE/WORKFLOW_DESERIALIZE | wrun_01M1CVASJ48AXFCJZGV5Z10EHS
  • instanceMethodStepWorkflow - instance methods with "use step" directive | wrun_01M1CVB141FVW96K1HKNAC1PDN
  • crossContextSerdeWorkflow - classes defined in step code are deserializable in workflow context | wrun_01M1CVBDFE0EFX5MS0K99WC42X
  • stepFunctionAsStartArgWorkflow - step function reference passed as start() argument | wrun_01M1CVBNZR5XDCFMVK00JZZ5MK
  • cancelRun - cancelling a running workflow | wrun_01M1CVBXAM3Q7CWZQYM7P5MM3V
  • cancelRun via CLI - cancelling a running workflow | wrun_01M1CVC2FGT0X78QG1WPA922DH
  • 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_01M1CVCARYF6RMDW9ZB2AHWFPB
  • hookWithSleepFinalStepWorkflow - step only on final payload | wrun_01M1CVCQ3510E0FBQQQXZB7QJ3
  • sleepInLoopWorkflow - sleep inside loop with steps actually delays each iteration | wrun_01M1CVD0N32V3V0AJTA45VJ4KW
  • sleepWithSequentialStepsWorkflow - sequential steps work with concurrent sleep (control) | wrun_01M1CVDBM40MXAM6SDPZBCW8V0
  • importMetaUrlWorkflow - import.meta.url is available in step bundles | wrun_01M1CVDJVYDQ2BKNNQQ48DNFKD
  • metadataFromHelperWorkflow - getWorkflowMetadata/getStepMetadata work from module-level helper (#1577) | wrun_01M1CVDNA6CJH9YV3V18A902Y8
  • resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01M1CVDQQMQAJGFJE7FBPT63TT
Details by Category
✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro9908
✅ example9908
✅ express9908
✅ fastify9908
✅ hono9908
✅ nextjs-turbopack10403
✅ nextjs-webpack10403
✅ nitro9908
✅ nuxt9908
✅ sveltekit9908
✅ vite9908
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack10700
❌ 🌍 Community Worlds
AppPassedFailedSkipped
✅ mongodb-dev403
✅ redis-dev403
❌ redis67210
✅ turso-dev403
❌ turso3850
✅ 📋 Other
AppPassedFailedSkipped
✅ e2e-local-dev-nest-stable10106
✅ e2e-local-dev-tanstack-start-stable10106
✅ e2e-local-postgres-nest-stable10106
✅ e2e-local-postgres-tanstack-start-stable10106
✅ e2e-local-prod-nest-stable10106
✅ e2e-local-prod-tanstack-start-stable10106
📋 View full workflow run
@pranaygp
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closing since this only manifested in v5 in retained VM replays, but is't an issue in v4 even if it's "technically" a bug
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, '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); }
})();
})();
Backport #3879: fix(core): re-arm late-claimed hook deliveries by github-actions[bot] · Pull Request #3905 · vercel/workflow · GitHub
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Backport #3879: fix(core): re-arm late-claimed hook deliveries - #3905
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github-actions[bot] wants to merge 1 commit into
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Closed
Backport #3879: fix(core): re-arm late-claimed hook deliveries#3905
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@github-actions
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Automated backport of #3879 to stable (backport job run).
AI recommendation: This is a pure correctness fix (patch changeset) for the delivery-barrier machinery in packages/core/src/private.ts, which exists verbatim on stable — including the unarmed buffered-hook barrier, the idle safety net, and the no-op arm() on an already-retired entry that lets a run suspend before a claimed hook payload reaches workflow code. The added async-deserialization-ordering regression exercises the defect through the ordinary hook API with no retained-VM machinery, so stable is exposed to the same lost/hung delivery even though the failure was found in a retained VM. Note that packages/core/src/retained-vm-loop.test.ts does not exist on stable (retained VM is main-only), so that test file should be dropped from the cherry-pick.
Merge conflicts were resolved by AI (opencode with anthropic/claude-opus-5). Please review the conflict resolution carefully before merging.
@github-actions
fix(core): re-arm late-claimed hook deliveries (#3879)
9145e4a
* fix(core): re-arm late-claimed hook deliveries
* refactor(core): clarify delivery barrier lifecycle
Signed-off-by: Nathan Colosimo <110621881+NathanColosimo@users.noreply.github.com>
@github-actions
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as code ownersAugust 31, 2026 19:12
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mentioned this pull request
Aug 31, 2026
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@changeset-bot
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🦋 Changeset detected
Latest commit: 9145e4a
The changes in this PR will be included in the next version bump.
This PR includes changesets to release 16 packages
NameType
@workflow/corePatch
@workflow/buildersPatch
@workflow/cliPatch
@workflow/nextPatch
@workflow/nitroPatch
@workflow/vitestPatch
@workflow/web-sharedPatch
@workflow/webPatch
workflowPatch
@workflow/world-testingPatch
@workflow/astroPatch
@workflow/nestPatch
@workflow/rollupPatch
@workflow/sveltekitPatch
@workflow/vitePatch
@workflow/nuxtPatch
Not sure what this means? Click here to learn what changesets are.
Click here if you're a maintainer who wants to add another changeset to this PR
@vercel
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The latest updates on your projects. Learn more about Vercel for GitHub.
ProjectDeploymentActionsUpdated (UTC)
example-nextjs-workflow-turbopackReadyReadyPreview, v0Aug 31, 2026 7:17pm
example-nextjs-workflow-webpackReadyReadyPreview, v0Aug 31, 2026 7:17pm
example-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-astro-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-express-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-fastify-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-hono-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-nestjs-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-nitro-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-nuxt-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-python-workflowErrorErrorv0Aug 31, 2026 7:17pm
workbench-sveltekit-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-tanstack-start-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workbench-vite-workflowReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-docsReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-swc-playgroundReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-tarballsReadyReadyPreview, v0Aug 31, 2026 7:17pm
workflow-webReadyReadyPreview, v0Aug 31, 2026 7:17pm
@github-actions
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Aug 31, 2026•

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🧪 E2E Test Results
❌ Some tests failed
Summary
PassedFailedSkippedTotal
✅ ▲ Vercel Production10990781177
✅ 💻 Local Development11980861284
✅ 📦 Local Production11980861284
✅ 🐘 Local Postgres11980861284
✅ 🪟 Windows10700107
❌ 🌍 Community Worlds821069197
✅ 📋 Other606036642
Total54881063815975
❌ Failed Tests
🌍 Community Worlds (106 failed)
redis (21 failed):
  • hookWorkflow | wrun_01M1CTV89F40HCCQ711TYTKD1X
  • hookWorkflow is not resumable via public webhook endpoint | wrun_01M1CTVF3G418CEBDDP6675VZ6
  • parallelStepsThenWebhookWorkflow - no hook_conflict from same-tick replay race | wrun_01M1CTVRZWBEG68NQFHJC8S06D
  • sleepingWorkflow | wrun_01M1CTWR4HTMJDTCW0ZVVXPSJH
  • outputStreamWorkflow negative startIndex (reads from end)
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns correct index after stream completes
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns -1 before any chunks are written
  • outputStreamWorkflow - getTailIndex and getStreamChunks getStreamChunks returns same content as reading the stream
  • error handling serialization failures step-argument serialization failure is catchable in workflow code
  • error handling serialization failures uncaught step-argument serialization failure fails the run as USER_ERROR without redelivery retries
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01M1CV53B15HQJBNWJMAB46EAD
  • hookGetConflictWorkflow - awaiting hook.getConflict() registers hook without payload | wrun_01M1CV5HBGQJCQZ6B9H2MSSJM7
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps | wrun_01M1CV5SFB9K6Q7VDWJKC707JD
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_01M1CV674ZN48849G6CG8J278M
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data | wrun_01M1CV73TRW50GY0TT9WPFY1HT
  • hookAdoptOwnerResultWorkflow - duplicate adopts the owner result via conflict.returnValue | wrun_01M1CV7840A1M2Z10HPTKJPB7Z
  • hookSignalOwnerWorkflow - duplicate forwards its payload to the owner via resumeHook | wrun_01M1CV7EZV8GZXC34CEVV71C2V
  • hookSupersedeOwnerWorkflow - duplicate cancels the owner and claims the released token | wrun_01M1CV7KADCB0E96HR9KNWTQT1
  • resume-or-start route pattern - resumeHook retried after start() reaches the new run | wrun_01M1CV7WF63Z20FV095ZTRKGZR
  • pages router sleepingWorkflow via pages router
  • resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01M1CVDQQMQAJGFJE7FBPT63TT
turso (85 failed):
  • addTenWorkflow | wrun_01M1CTTA4X1RHBEBFJFP0XW290
  • addTenWorkflow | wrun_01M1CTTA4X1RHBEBFJFP0XW290
  • deploymentId: 'latest' is a no-op in non-Vercel worlds
  • wellKnownAgentWorkflow (.well-known/agent) | wrun_01M1CTTGZPYD8D1M1SGBYKYW4G
  • should work with react rendering in step
  • promiseAllWorkflow | wrun_01M1CTTHD8X5EW9HS4S9GEQ2MJ
  • promiseRaceWorkflow | wrun_01M1CTTPDYJRZ97TSZQRAZZ0VV
  • promiseAnyWorkflow | wrun_01M1CTTRYZ3ET8MCMNE56S5KQH
  • importedStepOnlyWorkflow | wrun_01M1CTTVSFNVD0333BX5GD6SHF
  • readableStreamWorkflow | wrun_01M1CTTVAHX0Q1VWPAAK0MHRPS
  • hookWorkflow | wrun_01M1CTV89F40HCCQ711TYTKD1X
  • hookWorkflow is not resumable via public webhook endpoint | wrun_01M1CTVF3G418CEBDDP6675VZ6
  • webhookWorkflow | wrun_01M1CTVM3H0P6NBCF4RJ96CVRA
  • parallelStepsThenWebhookWorkflow - no hook_conflict from same-tick replay race | wrun_01M1CTVRZWBEG68NQFHJC8S06D
  • sleepingWorkflow | wrun_01M1CTWR4HTMJDTCW0ZVVXPSJH
  • parallelSleepWorkflow | wrun_01M1CTX84ZAV42GM449B1FYT2R
  • sleepWinsRaceWorkflow | wrun_01M1CTXBRN6KR3AFASTKEJ67Q4
  • stepWinsRaceWorkflow | wrun_01M1CTXFEGKH62EB6F3BKTWJT2
  • nullByteWorkflow | wrun_01M1CTXJZQBKSTQE2AH6E22YSR
  • workflowAndStepMetadataWorkflow | wrun_01M1CTXNCK1NJG649SQSGWWK73
  • outputStreamWorkflow no startIndex (reads all chunks)
  • outputStreamWorkflow positive startIndex (skips first chunk)
  • outputStreamWorkflow negative startIndex (reads from end)
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns correct index after stream completes
  • outputStreamWorkflow - getTailIndex and getStreamChunks getTailIndex returns -1 before any chunks are written
  • outputStreamWorkflow - getTailIndex and getStreamChunks getStreamChunks returns same content as reading the stream
  • outputStreamInsideStepWorkflow - getWritable() called inside step functions | wrun_01M1CTZY2AFJCCJ6BV61WTHTQ9
  • writableForwardedFromWorkflowWorkflow | wrun_01M1CV0AW9T5022NVPTEYZXZ4F
  • writableForwardedFromStepWorkflow | wrun_01M1CV0E0AH938BDRG6XYM46B2
  • fetchWorkflow | wrun_01M1CV0GXS83RD8JVDW34WHPMH
  • promiseRaceStressTestWorkflow | wrun_01M1CV0MDJXNKHY0YWKJ0RH1VR
  • 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 serialization failures step-argument serialization failure is catchable in workflow code
  • error handling serialization failures uncaught step-argument serialization failure fails the run as USER_ERROR without redelivery retries
  • 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_01M1CV4N8WHK9A39B0QXR4828N
  • concurrent hook token conflict - two workflows cannot use the same hook token simultaneously | wrun_01M1CV53B15HQJBNWJMAB46EAD
  • hookGetConflictWorkflow - awaiting hook.getConflict() registers hook without payload | wrun_01M1CV5HBGQJCQZ6B9H2MSSJM7
  • 'hookGetConflictWithPriorStepWorkflow' - hook.getConflict() does not block step execution | wrun_01M1CV5M2JQ5JP1V95Y0XF1C60
  • 'hookGetConflictWithParallelStepWorkfl…' - hook.getConflict() does not block step execution | wrun_01M1CV5PP8TGMTASZN1FTDRPMP
  • hookGetConflictThenStepParallelWorkflow - hook.getConflict() continuation step runs alongside other steps | wrun_01M1CV5SFB9K6Q7VDWJKC707JD
  • hookGetConflictWorkflow - hook.getConflict() resolves with the conflicting run when token is already registered | wrun_01M1CV674ZN48849G6CG8J278M
  • hookClaimOnlyMutexWorkflow - hook works as a pure run mutex without payload data | wrun_01M1CV73TRW50GY0TT9WPFY1HT
  • hookAdoptOwnerResultWorkflow - duplicate adopts the owner result via conflict.returnValue | wrun_01M1CV7840A1M2Z10HPTKJPB7Z
  • hookSignalOwnerWorkflow - duplicate forwards its payload to the owner via resumeHook | wrun_01M1CV7EZV8GZXC34CEVV71C2V
  • hookSupersedeOwnerWorkflow - duplicate cancels the owner and claims the released token | wrun_01M1CV7KADCB0E96HR9KNWTQT1
  • resume-or-start route pattern - resumeHook retried after start() reaches the new run | wrun_01M1CV7WF63Z20FV095ZTRKGZR
  • hookDisposeTestWorkflow - hook token reuse after explicit disposal while workflow still running | wrun_01M1CV83N1CJ54BQ83R1EX6AFY
  • stepFunctionPassingWorkflow - step function references can be passed as arguments (without closure vars) | wrun_01M1CV8M08DXY5819TG7RMJAT2
  • stepFunctionWithClosureWorkflow - step function with closure variables passed as argument | wrun_01M1CV8Y7JMBH3MX1XT7HGDPVC
  • closureVariableWorkflow - nested step functions with closure variables | wrun_01M1CV94J8GXC2XNAK6NZAGM1T
  • spawnWorkflowFromStepWorkflow - spawning a child workflow using start() inside a step | wrun_01M1CV96WXD5N02VNRNVSE7PF4
  • 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_01M1CV9QSR19RPC42E3P96RBXN
  • Calculator.calculate - static workflow method using static step methods from another class | wrun_01M1CV9YQEY72NTQJGAR813AC5
  • AllInOneService.processNumber - static workflow method using sibling static step methods | wrun_01M1CVA4VJ1NV5S3Q4RGD1G161
  • ChainableService.processWithThis - static step methods using this to reference the class | wrun_01M1CVAAWENCXZDM9GEFEJQKD4
  • thisSerializationWorkflow - step function invoked with .call() and .apply() | wrun_01M1CVAJ6E397ZJZQSXKNEAEYW
  • customSerializationWorkflow - custom class serialization with WORKFLOW_SERIALIZE/WORKFLOW_DESERIALIZE | wrun_01M1CVASJ48AXFCJZGV5Z10EHS
  • instanceMethodStepWorkflow - instance methods with "use step" directive | wrun_01M1CVB141FVW96K1HKNAC1PDN
  • crossContextSerdeWorkflow - classes defined in step code are deserializable in workflow context | wrun_01M1CVBDFE0EFX5MS0K99WC42X
  • stepFunctionAsStartArgWorkflow - step function reference passed as start() argument | wrun_01M1CVBNZR5XDCFMVK00JZZ5MK
  • cancelRun - cancelling a running workflow | wrun_01M1CVBXAM3Q7CWZQYM7P5MM3V
  • cancelRun via CLI - cancelling a running workflow | wrun_01M1CVC2FGT0X78QG1WPA922DH
  • 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_01M1CVCARYF6RMDW9ZB2AHWFPB
  • hookWithSleepFinalStepWorkflow - step only on final payload | wrun_01M1CVCQ3510E0FBQQQXZB7QJ3
  • sleepInLoopWorkflow - sleep inside loop with steps actually delays each iteration | wrun_01M1CVD0N32V3V0AJTA45VJ4KW
  • sleepWithSequentialStepsWorkflow - sequential steps work with concurrent sleep (control) | wrun_01M1CVDBM40MXAM6SDPZBCW8V0
  • importMetaUrlWorkflow - import.meta.url is available in step bundles | wrun_01M1CVDJVYDQ2BKNNQQ48DNFKD
  • metadataFromHelperWorkflow - getWorkflowMetadata/getStepMetadata work from module-level helper (#1577) | wrun_01M1CVDNA6CJH9YV3V18A902Y8
  • resilient start: addTenWorkflow completes when run_created returns 500 | wrun_01M1CVDQQMQAJGFJE7FBPT63TT
Details by Category
✅ ▲ Vercel Production
AppPassedFailedSkipped
✅ astro9908
✅ example9908
✅ express9908
✅ fastify9908
✅ hono9908
✅ nextjs-turbopack10403
✅ nextjs-webpack10403
✅ nitro9908
✅ nuxt9908
✅ sveltekit9908
✅ vite9908
✅ 💻 Local Development
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 📦 Local Production
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 🐘 Local Postgres
AppPassedFailedSkipped
✅ astro-stable10106
✅ express-stable10106
✅ fastify-stable10106
✅ hono-stable10106
✅ nextjs-turbopack-canary88019
✅ nextjs-turbopack-stable10700
✅ nextjs-webpack-canary88019
✅ nextjs-webpack-stable10700
✅ nitro-stable10106
✅ nuxt-stable10106
✅ sveltekit-stable10106
✅ vite-stable10106
✅ 🪟 Windows
AppPassedFailedSkipped
✅ nextjs-turbopack10700
❌ 🌍 Community Worlds
AppPassedFailedSkipped
✅ mongodb-dev403
✅ redis-dev403
❌ redis67210
✅ turso-dev403
❌ turso3850
✅ 📋 Other
AppPassedFailedSkipped
✅ e2e-local-dev-nest-stable10106
✅ e2e-local-dev-tanstack-start-stable10106
✅ e2e-local-postgres-nest-stable10106
✅ e2e-local-postgres-tanstack-start-stable10106
✅ e2e-local-prod-nest-stable10106
✅ e2e-local-prod-tanstack-start-stable10106
📋 View full workflow run
@pranaygp
pranaygp
commented
Aug 31, 2026

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closing since this only manifested in v5 in retained VM replays, but is't an issue in v4 even if it's "technically" a bug
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