text: /**
   * Generate numbers in the Fibonacci sequence.
   *
   * @generator
   * @function fibonacci
   * @yields {number} The next number in the Fibonacci sequence.
   */
   
   function *fibonacci(n) {
    const infinite = !n && n !== 0;
    let current = 0;
    let next = 1;
    
    while (infinite || n--) {
      yield current;
      [current, next] = [next, current + next];
    }
  }