Javascript ID Generator

function* idGenerator() {
  let i = 0;
  while (true) {
    const id = (i++).toString().padStart(4, "0");
    yield `department-area-${id}`;
  }
}

const id = idGenerator();

console.log(id.next().value);
console.log(id.next().value);
console.log(id.next().value);
console.log(id.next().value);