Method set

Cache/LFUCache.js:174–201

* @method set * @description - This method stored the value by key & add frequency if it doesn't exist * @param {string} key * @param {any} value * @param {number} frequency * @returns {LFUCache}

(key, value, frequency = 1)

   * @returns {LFUCache}
   */
  set(key, value, frequency = 1) {
    key = String(key) // converted to string

    if (this.#capacity === 0) {
      throw new RangeError('LFUCache ERROR: The Capacity is 0')
    }

    if (this.cache.has(key)) {
      const node = this.cache.get(key)
      node.value = value

      this.#frequencyMap.refresh(node)

      return this
    }

    // if the cache size is full, then it's delete the Least Frequency Used node
    if (this.#capacity === this.cache.size) {
      this.#removeCacheNode()
    }

    const newNode = new CacheNode(key, value, frequency)

    this.cache.set(key, newNode)
    this.#frequencyMap.insert(newNode)

    return this
  }

  /**
   * @method parse