class Nodeimport { Node } from "https://deno.land/x/masx200_leetcode_test@7.6.0/populating-next-right-pointers-in-each-node/Node.ts"; ConstructorsnewNode(val?: number,left?: Node,right?: Node,next?: Node,)Propertiesleft: Node | nullnext: Node | nullright: Node | nullval: number