Method __iterator

src/Stack.js:179–193

(type, reverse)

  }

  __iterator(type, reverse) {
    if (reverse) {
      return new ArraySeq(this.toArray()).__iterator(type, reverse);
    }
    let iterations = 0;
    let node = this._head;
    return new Iterator(() => {
      if (node) {
        const value = node.value;
        node = node.next;
        return iteratorValue(type, iterations++, value);
      }
      return iteratorDone();
    });
  }
}

Stack.isStack = isStack;