Function connectDAGNodes

packages/testing/src/factories/dag.factory.ts:174–192

(
  dag: DAG,
  sourceId: string,
  targetId: string,
  sourceHandle?: string
)

 * Connects two nodes in a DAG with an edge.
 */
export function connectDAGNodes(
  dag: DAG,
  sourceId: string,
  targetId: string,
  sourceHandle?: string
): DAG {
  const sourceNode = dag.nodes.get(sourceId)
  const targetNode = dag.nodes.get(targetId)

  if (sourceNode && targetNode) {
    const edgeId = sourceHandle
      ? `${sourceId}→${targetId}-${sourceHandle}`
      : `${sourceId}→${targetId}`
    sourceNode.outgoingEdges.set(edgeId, { target: targetId, sourceHandle })
    targetNode.incomingEdges.add(sourceId)
  }

  return dag
}