Method #removeLeastRecentlyUsed

Cache/LRUCache.js:58–60

* delete oldest key existing in map by the help of iterator

()

   * delete oldest key existing in map by the help of iterator
   */
  #removeLeastRecentlyUsed() {
    this.cache.delete(this.cache.keys().next().value)
  }

  /**
   * @param {string} key