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dependencies: update and clean (and auto-fix style issues) (#1195)
* Update npm dependencies (and auto-fix style issues)
* Updated Documentation in README.md
Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
This commit is contained in:
Roland Hummel
@@ -45,121 +45,121 @@ class FrequencyMap extends Map {
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}
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class LFUCache {
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#capacity
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#frequencyMap
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#capacity
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#frequencyMap
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/**
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/**
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* @param {number} capacity - The range of LFUCache
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* @returns {LFUCache} - sealed
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*/
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constructor (capacity) {
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this.#capacity = capacity
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this.#frequencyMap = new FrequencyMap()
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this.misses = 0
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this.hits = 0
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this.cache = new Map()
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constructor (capacity) {
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this.#capacity = capacity
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this.#frequencyMap = new FrequencyMap()
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this.misses = 0
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this.hits = 0
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this.cache = new Map()
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return Object.seal(this)
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}
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return Object.seal(this)
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}
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/**
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/**
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* Get the capacity of the LFUCache
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* @returns {number}
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*/
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get capacity () {
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return this.#capacity
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}
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get capacity () {
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return this.#capacity
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}
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/**
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/**
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* Get the current size of LFUCache
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* @returns {number}
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*/
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get size () {
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return this.cache.size
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}
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get size () {
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return this.cache.size
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}
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/**
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/**
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* Set the capacity of the LFUCache if you decrease the capacity its removed CacheNodes following the LFU - least frequency used
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*/
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set capacity (newCapacity) {
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if (this.#capacity > newCapacity) {
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let diff = this.#capacity - newCapacity // get the decrement number of capacity
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set capacity (newCapacity) {
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if (this.#capacity > newCapacity) {
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let diff = this.#capacity - newCapacity // get the decrement number of capacity
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while (diff--) {
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this.#removeCacheNode()
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}
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this.cache.size === 0 && this.#frequencyMap.clear()
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while (diff--) {
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this.#removeCacheNode()
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}
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this.#capacity = newCapacity
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this.cache.size === 0 && this.#frequencyMap.clear()
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}
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get info () {
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return Object.freeze({
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misses: this.misses,
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hits: this.hits,
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capacity: this.capacity,
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currentSize: this.size,
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leastFrequency: this.leastFrequency
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})
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this.#capacity = newCapacity
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}
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get info () {
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return Object.freeze({
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misses: this.misses,
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hits: this.hits,
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capacity: this.capacity,
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currentSize: this.size,
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leastFrequency: this.leastFrequency
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})
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}
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get leastFrequency () {
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const freqCacheIterator = this.#frequencyMap.keys()
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let leastFrequency = freqCacheIterator.next().value || null
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// select the non-empty frequency Set
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while (this.#frequencyMap.get(leastFrequency)?.size === 0) {
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leastFrequency = freqCacheIterator.next().value
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}
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get leastFrequency () {
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const freqCacheIterator = this.#frequencyMap.keys()
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let leastFrequency = freqCacheIterator.next().value || null
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return leastFrequency
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}
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// select the non-empty frequency Set
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while (this.#frequencyMap.get(leastFrequency)?.size === 0) {
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leastFrequency = freqCacheIterator.next().value
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}
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#removeCacheNode () {
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const leastFreqSet = this.#frequencyMap.get(this.leastFrequency)
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// Select the least recently used node from the least Frequency set
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const LFUNode = leastFreqSet.values().next().value
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return leastFrequency
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}
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leastFreqSet.delete(LFUNode)
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this.cache.delete(LFUNode.key)
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}
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#removeCacheNode () {
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const leastFreqSet = this.#frequencyMap.get(this.leastFrequency)
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// Select the least recently used node from the least Frequency set
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const LFUNode = leastFreqSet.values().next().value
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leastFreqSet.delete(LFUNode)
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this.cache.delete(LFUNode.key)
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}
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/**
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/**
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* if key exist then return true otherwise false
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* @param {any} key
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* @returns {boolean}
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*/
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has (key) {
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key = String(key) // converted to string
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has (key) {
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key = String(key) // converted to string
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return this.cache.has(key)
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}
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return this.cache.has(key)
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}
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/**
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/**
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* @method get
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* @description - This method return the value of key & refresh the frequencyMap by the oldNode
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* @param {string} key
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* @returns {any}
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*/
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get (key) {
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key = String(key) // converted to string
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get (key) {
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key = String(key) // converted to string
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if (this.cache.has(key)) {
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const oldNode = this.cache.get(key)
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this.#frequencyMap.refresh(oldNode)
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if (this.cache.has(key)) {
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const oldNode = this.cache.get(key)
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this.#frequencyMap.refresh(oldNode)
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this.hits++
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this.hits++
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return oldNode.value
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}
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this.misses++
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return null
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return oldNode.value
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}
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/**
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this.misses++
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return null
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}
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/**
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* @method set
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* @description - This method stored the value by key & add frequency if it doesn't exist
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* @param {string} key
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@@ -167,88 +167,88 @@ class LFUCache {
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* @param {number} frequency
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* @returns {LFUCache}
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*/
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set (key, value, frequency = 1) {
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key = String(key) // converted to string
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set (key, value, frequency = 1) {
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key = String(key) // converted to string
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if (this.#capacity === 0) {
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throw new RangeError('LFUCache ERROR: The Capacity is 0')
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}
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if (this.#capacity === 0) {
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throw new RangeError('LFUCache ERROR: The Capacity is 0')
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}
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if (this.cache.has(key)) {
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const node = this.cache.get(key)
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node.value = value
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if (this.cache.has(key)) {
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const node = this.cache.get(key)
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node.value = value
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this.#frequencyMap.refresh(node)
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return this
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}
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// if the cache size is full, then it's delete the Least Frequency Used node
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if (this.#capacity === this.cache.size) {
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this.#removeCacheNode()
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}
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const newNode = new CacheNode(key, value, frequency)
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this.cache.set(key, newNode)
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this.#frequencyMap.insert(newNode)
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this.#frequencyMap.refresh(node)
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return this
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}
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/**
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// if the cache size is full, then it's delete the Least Frequency Used node
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if (this.#capacity === this.cache.size) {
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this.#removeCacheNode()
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}
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const newNode = new CacheNode(key, value, frequency)
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this.cache.set(key, newNode)
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this.#frequencyMap.insert(newNode)
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return this
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}
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/**
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* @method parse
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* @description - This method receive a valid LFUCache JSON & run JSON.prase() method and merge with existing LFUCache
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* @param {JSON} json
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* @returns {LFUCache} - merged
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*/
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parse (json) {
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const { misses, hits, cache } = JSON.parse(json)
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parse (json) {
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const { misses, hits, cache } = JSON.parse(json)
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this.misses += misses ?? 0
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this.hits += hits ?? 0
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this.misses += misses ?? 0
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this.hits += hits ?? 0
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for (const key in cache) {
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const { value, frequency } = cache[key]
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this.set(key, value, frequency)
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}
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return this
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for (const key in cache) {
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const { value, frequency } = cache[key]
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this.set(key, value, frequency)
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}
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/**
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return this
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}
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/**
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* @method clear
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* @description - This method cleared the whole LFUCache
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* @returns {LFUCache}
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*/
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clear () {
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this.cache.clear()
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this.#frequencyMap.clear()
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clear () {
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this.cache.clear()
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this.#frequencyMap.clear()
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return this
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}
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return this
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}
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/**
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/**
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* @method toString
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* @description - This method generate a JSON format of LFUCache & return it.
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* @param {number} indent
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* @returns {string} - JSON
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*/
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toString (indent) {
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const replacer = (_, value) => {
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if (value instanceof Set) {
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return [...value]
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}
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if (value instanceof Map) {
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return Object.fromEntries(value)
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}
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return value
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toString (indent) {
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const replacer = (_, value) => {
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if (value instanceof Set) {
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return [...value]
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}
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return JSON.stringify(this, replacer, indent)
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if (value instanceof Map) {
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return Object.fromEntries(value)
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}
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return value
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}
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return JSON.stringify(this, replacer, indent)
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}
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}
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export default LFUCache
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