Proxy and Reflect API works nicely together.

About how to use Proxy, check this .

Let's see about Reflect API:

const obj = {name: "foo"};console.log(Reflect.get(obj, "name")); // "foo"

 

For proxy and Reflect, their API is really similar:

const target = {name: "foo"};const handler = {    get: function(target, key){      console.log("Accessd key", key);      return Reflect.get(target, key); // using Reflect to get the value    },    set: function(target, key, value){      console.log('Update key', key, "to", value);      Reflect.set(target, key, value); // using Reflect to set the value    }  };function logAccessToProperties(obj) {  return new Proxy(obj, handler);}const l = logAccessToProperties(target);console.log(l.name); //fool.age = 23console.log(l.age ); //23