What is the use of Proxy and Reflect in JavaScript?

const object = {    name: "Rajesh Royal",    Age: 23,    _Sex: "Male"}const logger = {    get(target, property){        if(property.startsWith("_")){            throw new Error(`${property} is a private property.`);        }        console.log(`Reading the property ${property}`);        return target[property];    }}const Logger = new Proxy(object, logger);// now if you try to access the private property it will throw an errorLogger._SexUncaught Error: _Sex is a private property.    at Object.get (<anonymous>:4:19)    at <anonymous>:1:8