Method getNodeById

src/LGraph.ts:960–964

* Returns a node by its id.

(id: NodeId | null | undefined)

   * Returns a node by its id.
   */
  getNodeById(id: NodeId | null | undefined): LGraphNode | null {
    return id != null
      ? this._nodes_by_id[id]
      : null
  }

  /**
   * Returns a list of nodes that matches a class