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- 'use strict';
- /**
- * Module dependenices
- */
- const clone = require('shallow-clone');
- const typeOf = require('kind-of');
- const isPlainObject = require('is-plain-object');
- function cloneDeep(val, instanceClone) {
- switch (typeOf(val)) {
- case 'object':
- return cloneObjectDeep(val, instanceClone);
- case 'array':
- return cloneArrayDeep(val, instanceClone);
- default: {
- return clone(val);
- }
- }
- }
- function cloneObjectDeep(val, instanceClone) {
- if (typeof instanceClone === 'function') {
- return instanceClone(val);
- }
- if (instanceClone || isPlainObject(val)) {
- const res = new val.constructor();
- for (let key in val) {
- res[key] = cloneDeep(val[key], instanceClone);
- }
- return res;
- }
- return val;
- }
- function cloneArrayDeep(val, instanceClone) {
- const res = new val.constructor(val.length);
- for (let i = 0; i < val.length; i++) {
- res[i] = cloneDeep(val[i], instanceClone);
- }
- return res;
- }
- /**
- * Expose `cloneDeep`
- */
- module.exports = cloneDeep;
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