isleward/src/server/misc/clone.js

let cloneRecursive = function (o, newO) {
	if (typeof o !== 'object') 
		return o;
    
	if (!o) 
		return o;
 
	if (o instanceof Array) {
		if (!newO || !newO.push)
			newO = [];

		for (let i = 0; i < o.length; i++) 
			newO[i] = cloneRecursive(o[i], newO[i]);
      
		return newO;
	}

	if (!newO)
		newO = {};
	for (let i in o) {
		if (o.hasOwnProperty(i))
			newO[i] = cloneRecursive(o[i], newO[i]);
	}
	return newO;
};

let clone = function (o) {
	try {
		let aLen = arguments.length;
		for (let i = 1; i < aLen; i++) 
			cloneRecursive(arguments[i], o);
	} catch (e) {
		throw e;
	}

	return o;
};

module.exports = clone;