axe-core/lib/core/utils/clone.js

Accessibility engine for automated Web UI testing

/**
 * Deeply clones an object or array
 * @param  {Mixed} obj The object/array to clone
 * @return {Mixed}     A clone of the initial object or array
 */
axe.utils.clone = function(obj) {
	/* eslint guard-for-in: 0*/
	'use strict';
	var index,
		length,
		out = obj;

	if (obj !== null && typeof obj === 'object') {
		if (Array.isArray(obj)) {
			out = [];
			for (index = 0, length = obj.length; index < length; index++) {
				out[index] = axe.utils.clone(obj[index]);
			}
		} else {
			out = {};
			for (index in obj) {
				out[index] = axe.utils.clone(obj[index]);
			}
		}
	}
	return out;
};