Function: executeFlowStep()

function executeFlowStep<TIn, THandle>(
   flowCtx, 
   stepNode, 
   outerBranchId?
): Promise<{
  output?: unknown;
  status: "completed" | "suspended" | "rewound";
}>;

Defined in: runtime/flow/internal/execute-flow-step.ts:338

Executes a single FlowStepNode, handling .inputFrom() projection, step-level .replaceWith() promotion, and .retry() backoff (SPEC.md §3.9).

Persists completedStepOutputs and recordStepTransition in LedgerStore when the step completes, and quiesces 'scope'-scoped services and restores baseScopeCheckpoint if the step faults or aborts.

Type Parameters

Type Parameter	Default type	Description
TIn	unknown	Validated flow input payload type.
THandle	unknown	Runtime handle type of the active isolation scope.

Parameters

Parameter	Type	Description
flowCtx	FlowExecutionContext<TIn, THandle>	Active flow execution context.
stepNode	FlowStepNode<unknown, unknown, THandle>	Passive FlowStepNode to execute.
outerBranchId?	string	Optional enclosing FlowBranchNode.id for output attribution.

Returns

Promise<{ output?: unknown; status: "completed" | "suspended" | "rewound"; }>

Step execution outcome.