使用get vs property vs方法

const person = {
  firstName: 'John',
  lastName: 'Doe'
};

const firstName = person.get('firstName');

const person = {
  firstName: 'John',
  lastName: 'Doe'
};

const firstName = person.property('firstName');

const person = {
  firstName: 'John',
  lastName: 'Doe'
};

const firstName = person.firstName();