src/ds/tree/index.js

const createTree = require('./createTree')
const createTreeNode = require('./createTreeNode')
const deleteTreeNode = require('./deleteTreeNode')
const findTreeNode = require('./findTreeNode')
const insertTreeNode = require('./insertTreeNode')
const printTree = require('./printTree')
const walkTreeBFS = require('./walkTreeBFS')
const walkTreeDFS = require('./walkTreeDFS')

module.exports = {
  createTree,
  createTreeNode,
  deleteTreeNode,
  findTreeNode,
  insertTreeNode,
  printTree,
  walkTreeBFS,
  walkTreeDFS
}