Obtenha JS

const obj = {
  log: ['a', 'b', 'c'],
  get latest() {     //get is used to return a value from your object
    if (this.log.length === 0) {
      return undefined;
    }
    return this.log[this.log.length - 1];
  }
};

console.log(obj.latest);
// expected output: "c"
CodeCat