Support an instrumentation preload for the Nest queue consumer

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Read the Nest queue consumer generation path in @workflow/nest and the workflow-nest build --vercel CLI options, then trace how the consumer, workflow, and step bundles are built. Check the lifecycle-hook documentation and local development behavior. Done means a supported preload runs once per function instance before consumer and step modules, is included in the generated function, and has documented bundle and local development behavior.

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描述

Problem

A Nest application deployed with workflow-nest build --vercel runs Workflow's queue consumer in a standalone function that does not load the Nest application's bootstrap or instrumentation module. As a result, an application cannot use its existing OpenTelemetry and error-reporting setup in that function through a documented configuration hook.

The Workflow lifecycle-hook documentation says application startup registration is not supported for the standalone Nest function and cautions against registering at a workflow file's top level. The workflow-nest build CLI does not expose a preload, instrumentation entry, or bundle injection option.

Request

Provide a supported instrumentation or preload entry for the generated Nest queue consumer. It should execute once per function instance before the consumer and step modules, allow an application to register its OpenTelemetry provider and error-reporting integration idempotently, and be bundled with the generated function. Please document how it interacts with the separate workflow and step bundles and local development.

Environment

  • @workflow/nest 5.1.4
  • workflow 5.2.3
  • @workflow/builders 5.0.6
  • Vercel Node.js functions

A supported entry would remove the need for each application to arrange a shared step-side import or patch generated build output.

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