in src/dotnet/PowerToys.CyclomaticComplexity/ComplexityAnalysisElementProblemAnalyzer.cs [108:115]
private static int CalculateCyclomaticComplexity(IControlFlowGraph graph)
{
var edges = GetEdges(graph);
var nodeCount = GetNodeCount(edges);
// Standard CC formula (edges - nodes + 2)
return edges.Count - nodeCount + 2;
}