function defaultimport { default } from "https://deno.land/x/masx200_leetcode_test@10.6.5/lowest-common-ancestor-of-a-binary-tree/index.ts"; default(root?: TreeNode | null,p?: TreeNode | null,q?: TreeNode | null,): TreeNode | nullParametersoptionalroot: TreeNode | nulloptionalp: TreeNode | nulloptionalq: TreeNode | nullReturnsTreeNode | null