lru - npm Package Compare versions

Comparing version 2.0.1 to 3.0.0

index.js

@@ -20,2 +20,6 @@ var events = require('events')
 
+Object.defineProperty(LRU.prototype, 'keys', {
+  get: function () { return Object.keys(this.cache) }
+})
+
 LRU.prototype.remove = function (key) {
@@ -51,3 +55,8 @@ if (typeof key !== 'string') key = '' + key
 LRU.prototype.peek = function (key) {
-  return this.cache.hasOwnProperty(key) ? this.cache[key].value : null
+  if (!this.cache.hasOwnProperty(key)) return
+
+  var element = this.cache[key]
+
+  if (!this._checkAge(key, element)) return
+  return element.value
 }
@@ -88,2 +97,11 @@
 
+LRU.prototype._checkAge = function (key, element) {
+  if (this.maxAge && (Date.now() - element.modified) > this.maxAge) {
+    this.remove(key)
+    this.emit('evict', {key: key, value: element.value})
+    return false
+  }
+  return true
+}
+
 LRU.prototype.get = function (key) {
@@ -95,7 +113,3 @@ if (typeof key !== 'string') key = '' + key
 
-  if (this.maxAge && (Date.now() - element.modified) > this.maxAge) {
-    this.remove(key)
-    this.emit('evict', {key: key, value: element.value})
-    return
-  }
+  if (!this._checkAge(key, element)) return
 
@@ -102,0 +116,0 @@ if (this.head !== key) {

package.json

 {
   "name": "lru",
   "description": "A simple O(1) LRU cache",
-  "version": "2.0.1",
+  "version": "3.0.0",
   "author": "Chris O'Hara <[e-mail]>",
@@ -6,0 +6,0 @@ "main": "index",

README.md

@@ -56,2 +56,5 @@ # lru
 
+##### `.keys`
+Array of all the keys currently in the cache.
+
 #### Methods
@@ -58,0 +61,0 @@

test/lru-test.js

@@ -5,12 +5,2 @@ var assert = require('assert')
 
-function keys (obj) {
-  var result = []
-  for (var k in obj) {
-    if (obj.hasOwnProperty(k)) {
-      result.push(k)
-    }
-  }
-  return result
-}
-
 var suite = vows.describe('LRU')
@@ -55,3 +45,3 @@
 
-    assert.deepEqual(['foo3', 'foo4'], keys(lru.cache))
+    assert.deepEqual(['foo3', 'foo4'], lru.keys)
   }
@@ -81,3 +71,3 @@ })
 
-    assert.deepEqual(['foo1', 'foo3'], keys(lru.cache))
+    assert.deepEqual(['foo1', 'foo3'], lru.keys)
   },
@@ -92,3 +82,3 @@ 'lru invariant is maintained after set(), get() and remove()': function () {
     lru.set('d', 1)
-    assert.deepEqual(['c', 'd'], keys(lru.cache))
+    assert.deepEqual(['c', 'd'], lru.keys)
   }
@@ -98,14 +88,2 @@ })
 suite.addBatch({
-  'lru invariant is maintained for get()': function () {
-    var lru = new LRU(2)
-
-    lru.set('foo1', 'bar1')
-    lru.set('foo2', 'bar2')
-
-    lru.get('foo2') // now foo2 should be deleted instead of foo1
-
-    lru.set('foo3', 'bar3')
-
-    assert.deepEqual(['foo2', 'foo3'], keys(lru.cache))
-  },
   'lru invariant is maintained in the corner case size == 1': function () {
@@ -121,3 +99,3 @@ var lru = new LRU(1)
 
-    assert.deepEqual(['foo3'], keys(lru.cache))
+    assert.deepEqual(['foo3'], lru.keys)
   }
@@ -146,2 +124,19 @@ })
 suite.addBatch({
+  'peek respects max age': {
+    topic: function () {
+      var lru = new LRU({maxAge: 5})
+      lru.set('foo', 'bar')
+      assert.equal(lru.get('foo'), 'bar')
+      var callback = this.callback
+      setTimeout(function () {
+        callback(null, lru)
+      }, 100)
+    },
+    'the entry is removed if age > max_age': function (lru) {
+      assert.equal(lru.peek('foo'), null)
+    }
+  }
+})
+
+suite.addBatch({
   'evicting items by age': {
@@ -148,0 +143,0 @@ topic: function () {

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Major refactor

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New author

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Improved metrics

Total package byte prevSize

13835

increased by2.22%

Lines of code

332

increased by2.79%

Number of lines in readme file

93

increased by3.33%

Number of medium supply chain risk alerts

0

decreased by-100%

No dependency changes