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vercel__workflow/.changeset/pre/fix-step-vs-wait-race-eager-wait.md
2026-09-09 14:44:37 -07:00

1.2 KiB

@workflow/core, @workflow/world-local
@workflow/core @workflow/world-local
patch patch

V2 suspension processing: unify wait + step queue dispatch into a single parallel batch. The runtime now queues every pending operation (non-inline steps + wait timer) in one Promise.all and then inline-executes one owned step (if any). The asymmetric { timeoutSeconds } return contract for waits is dropped from suspension processing; waits become normal queue continuations with delaySeconds, deduplicated per wait so repeated suspension passes don't accumulate delayed messages. Continuation delays are clamped to 23h (VQS's message-retention bound) with longer waits chained across hop-keyed messages, so multi-day sleep()s work on every world. This restores inline step execution for Promise.race(step, sleep) workflows without any of the carve-outs the prior fix needed: even when the inline step blocks the handler, the wait continuation fires in parallel and drives the next replay. As part of the same change, world-local's queue now honors delaySeconds (matches world-vercel / world-postgres), and its close() aborts pending delayed deliveries and retry sleeps so dev-server/test shutdown isn't held open by wait timers.