'use strict';

const data = { name: 'Marcus Aurelius', city: 'Rome', born: 121 };

const person = new Proxy(data, {

get(obj, key) {

console.log('get', key);

return obj[key];

},

set(obj, key, val) {

console.log('set', key, val);

obj[key] = val;

return true;

},

});

console.dir({ 'person.born': person.born });

console.dir({ 'person.year': person.year });

for (const key in person) {

console.dir({ key: person[key] });

}

person.name = 'Marcus';