Function groupByLayer

apps/sim/lib/workflows/autolayout/core.ts:189–200

(nodes: Map<string, GraphNode>)

 * Groups nodes by their layer number
 */
export function groupByLayer(nodes: Map<string, GraphNode>): Map<number, GraphNode[]> {
  const layers = new Map<number, GraphNode[]>()

  for (const node of nodes.values()) {
    if (!layers.has(node.layer)) {
      layers.set(node.layer, [])
    }
    layers.get(node.layer)!.push(node)
  }

  return layers
}

/**
 * Resolves vertical overlaps between nodes in the same layer.