Method isPolymorphicSibling

src/mcp/tools.ts:3215–3229

(nodes: Node[])

    const MIN_SIBLINGS = 3;
    const siblingSuper = new Map<string, boolean>();
    const isPolymorphicSibling = (nodes: Node[]): boolean => {
      for (const n of nodes) {
        for (const e of cg.getOutgoingEdges(n.id)) {
          if (e.kind !== 'implements' && e.kind !== 'extends') continue;
          let many = siblingSuper.get(e.target);
          if (many === undefined) {
            many = cg.getIncomingEdges(e.target)
              .filter((x) => x.kind === 'implements' || x.kind === 'extends').length >= MIN_SIBLINGS;
            siblingSuper.set(e.target, many);
          }
          if (many) return true;
        }
      }
      return false;
    };

    // A file that DEFINES a polymorphic supertype (a class/interface with ≥
    // MIN_SIBLINGS implementers) AND co-locates its subclasses is a redundant