Verhindern von Speicherlecks in reaktiven Graphbäumen mittels WeakSet-Referenzen

import { toRaw, reactive } from 'vue';
 
export function createGraphNode(val) {
  const visitedNodes = new WeakSet();
 
  function sanitize(node) {
    const rawNode = toRaw(node);
    if (typeof rawNode !== 'object' || rawNode === null) return rawNode;
    if (visitedNodes.has(rawNode)) return '[Circular]';
    visitedNodes.add(rawNode);
    return rawNode;
  }
 
  const state = reactive({ value: val, children: [] });
  return { state, sanitize };
}