I literally copy pasted example code from MDN but optional chaining wont work in my node(v12.13.0) REPL. Throws out a syntax error saying that the dot after the question mark is invalid. What's going on ? I have already used this expression in a React App and it seems to be working fine.

const adventurer = {

  name: 'Alice',

  cat: {

    name: 'Dinah'

  }

};





const dogName = adventurer.dog?.name;

console.log(dogName);

// expected output: undefined



console.log(adventurer.someNonExistentMethod?.());

// expected output: undefined