demo for fields through prototype chain proxy declaration

ProtoProxy.js

'use strict';

const globalProto = Object.getPrototypeOf(Object.getPrototypeOf(Object));

const theirs = new Proxy(globalProto, {
	get (target, prop, receiver) {
		debugger;
		console.log('p_get', prop);
	},
	set (target, prop, value, receiver) {
		console.log('p_set', prop, value);
		// so we should add the value to the receiver
		debugger;
		return true;
	}
});

try {
	console.log(Object.setPrototypeOf(Object.prototype, theirs));
} catch (e) {
	console.error(e);
}

const my = {
	fdsa: 123
};

console.log(Object.getPrototypeOf(my))

console.log(Object.getPrototypeOf(my) === globalProto)

console.log(Object.getPrototypeOf(my))
console.log(Object.getPrototypeOf(my) === globalProto)

Reflect.setPrototypeOf(my, theirs);
my.asdf = 321;

console.log('aaa', my.asdf);
console.log('fdsa', my.fdsa);

const jet = function (obj) {
	console.log('here');
	Object.entries(obj).forEach(([key, value]) => {
		console.log('key', key);
		delete obj[key];
		Reflect.defineProperty(obj, key, {
			get () {
				console.log('r_get', value);
				return value;
			},
			set (_value) {
				console.log('r_set init', value);
				value = _value;
				console.log('r_set completed', value);
				return true;
			}
		})
	});
};

jet(my);

my.fdsa = 54321;
my.fdsa = 12345;

console.log('my.fdsa', my.fdsa);

const third = {};

Reflect.setPrototypeOf(third, my);

third.fsda = 123;

console.log('third.fsda', my.fsda);

third.fdsa = '3rd → my : fdsa';
third.asdf = '3rd → my : asdf';

console.log('third.fsda', third.fdsa);
console.log('third.asdf', third.asdf);
console.log('third.hasOwn fdsa', Object.hasOwnProperty.call(third, 'fdsa'));
console.log('third.hasOwn asdf', Object.hasOwnProperty.call(third, 'asdf'));
console.log('my.hasOwn asdf', Object.hasOwnProperty.call(my, 'asdf'));
console.log('my.hasOwn fdsa', Object.hasOwnProperty.call(my, 'fdsa'));