nested object proxy handler from Michał Perłakowski & James Coyle at https://stackoverflow.com/questions/41299642/how-to-use-javascript-proxy-for-nested-objects

nestedproxy.js

const handler = {
get(target, key) {
	if (key == 'isProxy')
		return true;
	const prop = target[key];
	if (typeof prop == 'undefined')
		return;
	if (!prop.isProxy && typeof prop === 'object')
		target[key] = new Proxy(prop, handler);
	return target[key];
},
set(target, key, value) {
	console.log('Setting', target, `.${key} to equal`, value);
	target[key] = value;
	return true;
}
};

var test = {
    string: "data",
    number: 231321,
    object: {
    	string: "data",
    	number: 32434,
    	nested: {
    	    prop1: 1,
    	    prop2: 2
    	}
    },
    array: [
        1, 2, 3, 4, 5
    ],
};

test = new Proxy (test, handler);


test.number=123

test.object.string = "keke"

test.object.nested.prop1 = 4