Method teeIterator

out/cli.cjs:69177–69188

(queue)

  /**
   * Splits the stream into two streams which can be
   * independently read from at different speeds.
   */
  tee() {
    const left = [];
    const right = [];
    const iterator2 = this.iterator();
    const teeIterator = (queue) => {
      return {
        next: () => {
          if (queue.length === 0) {
            const result = iterator2.next();
            left.push(result);
            right.push(result);
          }
          return queue.shift();