nodejs does not recognize optional chaining operator

Question

My node version 12 does not recognize optional chaining operator. Sometimes the match is null. It complains about

Unexpected token '.'

export function getDiscount(description) {
  return description.match(/\d+(\%|\s\bpercent\b)/)?.[0];
}

Do I need to set an flag or something?

It works here

console.log(null?.[0])