<pre class="shiki github-dark shaku"><code>class NodeStore{ constructor(){ this.store = {}; this.id = 1; } set(node , value){ const id = node.storeid || this.id++; //if the node attributes or any property has changed and if we want to restore the node this.store[id] = value; node.storeid = id; } get(node){ const id = node.storeid if(id){ return this.store[id]; } throw new Error('Node not found') } has(node){ const id = node.storeid; return Object.hasOwn(this.store ,id); }}</code></pre>

node store