three.js/examples/jsm/nodes/core/VarNode.d.ts

import { Node } from './Node';
import { NodeBuilder } from './NodeBuilder';

export class VarNode extends Node {
  constructor(type: string, value?: any);

  value: any;
  nodeType: string;

  getType(builder: NodeBuilder): string;
  generate(builder: NodeBuilder, output: string): string;
  copy(source: VarNode): this;
}