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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>JSDoc: Class: LruCache</title>
<script src="scripts/prettify/prettify.js"> </script>
<script src="scripts/prettify/lang-css.js"> </script>
<!--[if lt IE 9]>
<script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<link type="text/css" rel="stylesheet" href="styles/prettify-tomorrow.css">
<link type="text/css" rel="stylesheet" href="styles/jsdoc-default.css">
</head>
<body>
<div id="main">
<h1 class="page-title">Class: LruCache</h1>
<section>
<header>
<h2><span class="attribs"><span class="type-signature"></span></span>LruCache<span class="signature">(limit, onEvict<span class="signature-attributes">opt</span>)</span><span class="type-signature"></span></h2>
<div class="class-description"><p>A standard Least Recently Used (LRU) Cache implementation.
Uses JavaScript Map's insertion order preservation to maintain recency.</p></div>
</header>
<article>
<div class="container-overview">
<h2>Constructor</h2>
<h4 class="name" id="LruCache"><span class="type-signature"></span>new LruCache<span class="signature">(limit, onEvict<span class="signature-attributes">opt</span>)</span><span class="type-signature"></span></h4>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th>Attributes</th>
<th>Default</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>limit</code></td>
<td class="type">
<span class="param-type">number</span>
</td>
<td class="attributes">
</td>
<td class="default">
</td>
<td class="description last"><p>Maximum number of items allowed in the cache.</p></td>
</tr>
<tr>
<td class="name"><code>onEvict</code></td>
<td class="type">
<span class="param-type">function</span>
</td>
<td class="attributes">
<optional><br>
</td>
<td class="default">
null
</td>
<td class="description last"><p>Optional callback triggered when an item is evicted.</p></td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="lib_core_utils_LruCache.js.html">lib/core/utils/LruCache.js</a>, <a href="lib_core_utils_LruCache.js.html#line5">line 5</a>
</li></ul></dd>
</dl>
</div>
<h3 class="subsection-title">Classes</h3>
<dl>
<dt><a href="LruCache.html">LruCache</a></dt>
<dd></dd>
</dl>
<h3 class="subsection-title">Members</h3>
<h4 class="name" id="size"><span class="type-signature"></span>size<span class="type-signature"></span></h4>
<div class="description">
<p>Returns the current number of items in the cache.</p>
</div>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="lib_core_utils_LruCache.js.html">lib/core/utils/LruCache.js</a>, <a href="lib_core_utils_LruCache.js.html#line89">line 89</a>
</li></ul></dd>
</dl>
<h3 class="subsection-title">Methods</h3>
<h4 class="name" id="clear"><span class="type-signature"></span>clear<span class="signature">()</span><span class="type-signature"></span></h4>
<div class="description">
<p>Clears all items from the cache.</p>
</div>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="lib_core_utils_LruCache.js.html">lib/core/utils/LruCache.js</a>, <a href="lib_core_utils_LruCache.js.html#line81">line 81</a>
</li></ul></dd>
</dl>
<h4 class="name" id="delete"><span class="type-signature"></span>delete<span class="signature">(key)</span><span class="type-signature"> → {boolean}</span></h4>
<div class="description">
<p>Deletes an item from the cache.</p>
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>key</code></td>
<td class="type">
<span class="param-type">string</span>
</td>
<td class="description last"></td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="lib_core_utils_LruCache.js.html">lib/core/utils/LruCache.js</a>, <a href="lib_core_utils_LruCache.js.html#line74">line 74</a>
</li></ul></dd>
</dl>
<h5>Returns:</h5>
<div class="param-desc">
<p>True if the item existed and was removed.</p>
</div>
<dl>
<dt>
Type
</dt>
<dd>
<span class="param-type">boolean</span>
</dd>
</dl>
<h4 class="name" id="get"><span class="type-signature"></span>get<span class="signature">(key)</span><span class="type-signature"> → {*}</span></h4>
<div class="description">
<p>Retrieves an item from the cache and updates its recency.</p>
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>key</code></td>
<td class="type">
<span class="param-type">string</span>
</td>
<td class="description last"></td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="lib_core_utils_LruCache.js.html">lib/core/utils/LruCache.js</a>, <a href="lib_core_utils_LruCache.js.html#line24">line 24</a>
</li></ul></dd>
</dl>
<h5>Returns:</h5>
<div class="param-desc">
<p>The cached value, or undefined if not found.</p>
</div>
<dl>
<dt>
Type
</dt>
<dd>
<span class="param-type">*</span>
</dd>
</dl>
<h4 class="name" id="has"><span class="type-signature"></span>has<span class="signature">(key)</span><span class="type-signature"> → {boolean}</span></h4>
<div class="description">
<p>Checks if a key exists in the cache without updating its recency.</p>
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>key</code></td>
<td class="type">
<span class="param-type">string</span>
</td>
<td class="description last"></td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="lib_core_utils_LruCache.js.html">lib/core/utils/LruCache.js</a>, <a href="lib_core_utils_LruCache.js.html#line65">line 65</a>
</li></ul></dd>
</dl>
<h5>Returns:</h5>
<dl>
<dt>
Type
</dt>
<dd>
<span class="param-type">boolean</span>
</dd>
</dl>
<h4 class="name" id="set"><span class="type-signature"></span>set<span class="signature">(key, value)</span><span class="type-signature"></span></h4>
<div class="description">
<p>Inserts or updates an item in the cache. Evicts the least recently used item if limit is exceeded.</p>
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>key</code></td>
<td class="type">
<span class="param-type">string</span>
</td>
<td class="description last"></td>
</tr>
<tr>
<td class="name"><code>value</code></td>
<td class="type">
<span class="param-type">*</span>
</td>
<td class="description last"></td>
</tr>
</tbody>
</table>
<dl class="details">