An array to tree generator utility.

Install

$ npm install treeish

Usage

Building the tree

import TreeUtil from 'treeish';

const collection = [
  { id: '3', name: 'C', x: '1', selected: true, type: 'campaign' },
  { id: '6', name: 'F', x: '3', selected: true, type: 'adset' },
  { id: '1', name: 'A', selected: true, type: 'mediaplan' },
  { id: '2', name: 'B', selected: true, type: 'mediaplan' },
  { id: '7', name: 'G', x: '4', selected: true, type: 'adset' },
  { id: '4', name: 'D', x: '1', selected: true, type: 'campaign' },
  { id: '5', name: 'E', x: '2', selected: true, type: 'campaign' },
  { id: '8', name: 'G', x: '6', selected: true, type: 'ad' },
  { id: '9', name: 'H', x: '6', selected: true, type: 'ad' },
  { id: '10', name: 'I', x: '7', selected: true, type: 'ad' },
  { id: '11', name: 'J', x: '7', selected: true, type: 'ad' },
];
const treeUtil = new TreeUtil(collection, { parentId: 'x' }); //parentId key is 'x'

Tree utility functions

const node = treeUtil.findNodeById('2') // returns the node with ID 2
const nodes = treeUtil.findAllNodesByProperty('type', 'campaign')
/* nodes will contain 
* [
*   { id: '3', name: 'C', x: '1', selected: true, type: 'campaign' },
*   { id: '4', name: 'D', x: '1', selected: true, type: 'campaign' },
*   { id: '5', name: 'E', x: '2', selected: true, type: 'campaign' }
* ]
*/

const nestedNodes = treeUtil.getNestedNodesByProperty(
  { id: '2', name: 'B', selected: true, type: 'mediaplan' },
  'type', 
  'campaign');
/* nestedNodes will contain 
* [
*   { id: '5', name: 'E', x: '2', selected: true, type: 'campaign' }
* ]
*/

const depth = treeUtil.maxDepth(); //depth is 4

treeUtil.updateNodes(
  treeUtil.children[1].children, //pass collection of nodes
  function(node, level){ node.model.selected = !node.model.selected; }
)
//will update all children of the second child of the root (node id: 2)

TODOs

• Add node creation and removal functionalities