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hierarchy-js

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Elegant and lightweight library for working with data structures

26 lines (19 loc) 959 B
'use strict'; var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; }; var defaultOptions = require('../constants'); var OPTIONS = {}; var id = function id(item) { return item && item[OPTIONS.id]; }; var parentId = function parentId(item) { return item && item[OPTIONS.parentId]; }; var childrenKey = function childrenKey() { return OPTIONS.children; }; var mergeOptionsBeforeCreateHierarchy = function mergeOptionsBeforeCreateHierarchy() { var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {}; OPTIONS = _extends({}, defaultOptions, options); return OPTIONS; }; module.exports = { id: id, parentId: parentId, childrenKey: childrenKey, mergeOptionsBeforeCreateHierarchy: mergeOptionsBeforeCreateHierarchy };