Typed Serialization in javascript

typedSerializerES6.js

function getFunctionFromStringName(functionNameSt){
	eval("var func = " + functionNameSt + ";");
	return func;
}

class TypedSerializer{
	static serialize(obj){
		let aux = {
			typeName: obj.constructor.name,
			data: obj
		};
		return JSON.stringify(aux);
	}
	
	static deserialize(text){
		let aux = JSON.parse(text);
		
		let constructorFunc = getFunctionFromStringName(aux.typeName);
		
		//this does not work, Object.create takes a map of property descriptors
		//return Object.create(constructorFunc.prototype, aux.data);
		var obj = Object.create(constructorFunc.prototype);
		Object.assign(obj, aux.data);
		return obj;
		
		//this would be equivalent to the above, but MDN discourages the use of setPrototypeOf
		// Object.setPrototypeOf(aux.data, constructorFunc.prototype);
		// return aux.data;

	}
}

//------------------------------------

class Account{
	constructor(id, owned, debt){
		this.id = id;
		this.owned = owned;
		this.debt = debt;
	}

	getState(){
		return this.owned - this.debt;
	}
	
}

//-----------------------------------



let p1 = new Account("12abc", 25, 5);

let st = TypedSerializer.serialize(p1);
console.log("serialized: " + st);

let p2 = TypedSerializer.deserialize(st);

console.log("instanceof Account? " + (p2 instanceof Account).toString());

console.log("state: " + p2.getState());

console.log(JSON.stringify(p2));