hierarchy-js/lib/methods/createFlatHierarchy.js

Elegant and lightweight library for working with data structures

'use strict';

var _require = require('../services/common'),
    hasChildren = _require.hasChildren,
    childrenKey = _require.childrenKey;

var createFlatHierarchy = function createFlatHierarchy(items, parent) {
  var options = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};

  var flatList = [];

  items.forEach(function (item) {
    if (hasChildren(item)) {
      var key = childrenKey();
      var children = createFlatHierarchy(item[key]);

      !options.saveExtractedChildren && delete item[key];
      !options.excludeParent && children.unshift(item);

      flatList = flatList.concat(children);
    } else {
      !options.excludeParent && flatList.push(item);
    }
  });
  return flatList;
};

module.exports = { createFlatHierarchy: createFlatHierarchy };