buildGraph crashes on workflows with cyclical then references

[lornakelly]

I tried this:

Calling buildGraph on workflows from the use cases defined in the specification repo. Both the managing-github-issues and multi-agent-ai-content-generation examples crash.

This happened:

buildGraph crashes with

RangeError: Maximum call stack size exceeded
      at Array.findIndex (<anonymous>)
      at graph-builder.ts:282
      at Array.filter (<anonymous>)
      at buildTransitions (graph-builder.ts:280)
      at buildGenericTaskNode (graph-builder.ts:325)
      at buildCallTaskNode (graph-builder.ts:336)
      at buildTaskNode (graph-builder.ts:297)
      at buildTransition (graph-builder.ts:252)

Both workflows use then directives that loop back to a previous step. For example, in the ai-content workflow, the refine step has then: evaluateQuality, and in the github-issues workflow, awaitDetailsFromQA has then: awaitForDevWork. The cyclical then references seem to be the issue.

I expected this:

buildGraph should successfully return a graph for all use cases

Is there a workaround?

Not that i'm aware, it will require a bug fix

Anything else?

No response

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