Method get

src/data-structures/lru-cache/LRUCache.js:50–55

* Returns the cached value by its key. * Time complexity: O(1) in average. * @param {string} key * @returns {any}

(key)

   * @returns {any}
   */
  get(key) {
    if (this.nodesMap[key] === undefined) return undefined;
    const node = this.nodesMap[key];
    this.promote(node);
    return node.val;
  }

  /**
   * Sets the value to cache by its key.