Template Upload

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SOUTHERNCO\x2mjbyrn
2017-05-17 13:45:25 -04:00
parent 415b9c25f3
commit 7efe7605b8
11476 changed files with 2170865 additions and 34 deletions

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/node_modules

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language: node_js
node_js:
- '0.8'
- '0.10'
- '0.12'
- 'iojs'
before_install:
- npm install -g npm@latest

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# Authors, sorted by whether or not they are me
Isaac Z. Schlueter <i@izs.me>
Brian Cottingham <spiffytech@gmail.com>
Carlos Brito Lage <carlos@carloslage.net>
Jesse Dailey <jesse.dailey@gmail.com>
Kevin O'Hara <kevinohara80@gmail.com>
Marco Rogers <marco.rogers@gmail.com>
Mark Cavage <mcavage@gmail.com>
Marko Mikulicic <marko.mikulicic@isti.cnr.it>
Nathan Rajlich <nathan@tootallnate.net>
Satheesh Natesan <snateshan@myspace-inc.com>
Trent Mick <trentm@gmail.com>
ashleybrener <ashley@starlogik.com>
n4kz <n4kz@n4kz.com>

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The ISC License
Copyright (c) Isaac Z. Schlueter and Contributors
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

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# lru cache
A cache object that deletes the least-recently-used items.
## Usage:
```javascript
var LRU = require("lru-cache")
, options = { max: 500
, length: function (n) { return n * 2 }
, dispose: function (key, n) { n.close() }
, maxAge: 1000 * 60 * 60 }
, cache = LRU(options)
, otherCache = LRU(50) // sets just the max size
cache.set("key", "value")
cache.get("key") // "value"
cache.reset() // empty the cache
```
If you put more stuff in it, then items will fall out.
If you try to put an oversized thing in it, then it'll fall out right
away.
## Keys should always be Strings or Numbers
Note: this module will print warnings to `console.error` if you use a
key that is not a String or Number. Because items are stored in an
object, which coerces keys to a string, it won't go well for you if
you try to use a key that is not a unique string, it'll cause surprise
collisions. For example:
```JavaScript
// Bad Example! Dont' do this!
var cache = LRU()
var a = {}
var b = {}
cache.set(a, 'this is a')
cache.set(b, 'this is b')
console.log(cache.get(a)) // prints: 'this is b'
```
## Options
* `max` The maximum size of the cache, checked by applying the length
function to all values in the cache. Not setting this is kind of
silly, since that's the whole purpose of this lib, but it defaults
to `Infinity`.
* `maxAge` Maximum age in ms. Items are not pro-actively pruned out
as they age, but if you try to get an item that is too old, it'll
drop it and return undefined instead of giving it to you.
* `length` Function that is used to calculate the length of stored
items. If you're storing strings or buffers, then you probably want
to do something like `function(n){return n.length}`. The default is
`function(n){return 1}`, which is fine if you want to store `max`
like-sized things.
* `dispose` Function that is called on items when they are dropped
from the cache. This can be handy if you want to close file
descriptors or do other cleanup tasks when items are no longer
accessible. Called with `key, value`. It's called *before*
actually removing the item from the internal cache, so if you want
to immediately put it back in, you'll have to do that in a
`nextTick` or `setTimeout` callback or it won't do anything.
* `stale` By default, if you set a `maxAge`, it'll only actually pull
stale items out of the cache when you `get(key)`. (That is, it's
not pre-emptively doing a `setTimeout` or anything.) If you set
`stale:true`, it'll return the stale value before deleting it. If
you don't set this, then it'll return `undefined` when you try to
get a stale entry, as if it had already been deleted.
## API
* `set(key, value, maxAge)`
* `get(key) => value`
Both of these will update the "recently used"-ness of the key.
They do what you think. `max` is optional and overrides the
cache `max` option if provided.
* `peek(key)`
Returns the key value (or `undefined` if not found) without
updating the "recently used"-ness of the key.
(If you find yourself using this a lot, you *might* be using the
wrong sort of data structure, but there are some use cases where
it's handy.)
* `del(key)`
Deletes a key out of the cache.
* `reset()`
Clear the cache entirely, throwing away all values.
* `has(key)`
Check if a key is in the cache, without updating the recent-ness
or deleting it for being stale.
* `forEach(function(value,key,cache), [thisp])`
Just like `Array.prototype.forEach`. Iterates over all the keys
in the cache, in order of recent-ness. (Ie, more recently used
items are iterated over first.)
* `keys()`
Return an array of the keys in the cache.
* `values()`
Return an array of the values in the cache.
* `length()`
Return total length of objects in cache taking into account
`length` options function.
* `itemCount`
Return total quantity of objects currently in cache. Note, that
`stale` (see options) items are returned as part of this item
count.
* `dump()`
Return an array of the cache entries ready for serialization and usage
with 'destinationCache.load(arr)`.
* `load(cacheEntriesArray)`
Loads another cache entries array, obtained with `sourceCache.dump()`,
into the cache. The destination cache is reset before loading new entries

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;(function () { // closure for web browsers
if (typeof module === 'object' && module.exports) {
module.exports = LRUCache
} else {
// just set the global for non-node platforms.
this.LRUCache = LRUCache
}
function hOP (obj, key) {
return Object.prototype.hasOwnProperty.call(obj, key)
}
function naiveLength () { return 1 }
var didTypeWarning = false
function typeCheckKey(key) {
if (!didTypeWarning && typeof key !== 'string' && typeof key !== 'number') {
didTypeWarning = true
console.error(new TypeError("LRU: key must be a string or number. Almost certainly a bug! " + typeof key).stack)
}
}
function LRUCache (options) {
if (!(this instanceof LRUCache))
return new LRUCache(options)
if (typeof options === 'number')
options = { max: options }
if (!options)
options = {}
this._max = options.max
// Kind of weird to have a default max of Infinity, but oh well.
if (!this._max || !(typeof this._max === "number") || this._max <= 0 )
this._max = Infinity
this._lengthCalculator = options.length || naiveLength
if (typeof this._lengthCalculator !== "function")
this._lengthCalculator = naiveLength
this._allowStale = options.stale || false
this._maxAge = options.maxAge || null
this._dispose = options.dispose
this.reset()
}
// resize the cache when the max changes.
Object.defineProperty(LRUCache.prototype, "max",
{ set : function (mL) {
if (!mL || !(typeof mL === "number") || mL <= 0 ) mL = Infinity
this._max = mL
if (this._length > this._max) trim(this)
}
, get : function () { return this._max }
, enumerable : true
})
// resize the cache when the lengthCalculator changes.
Object.defineProperty(LRUCache.prototype, "lengthCalculator",
{ set : function (lC) {
if (typeof lC !== "function") {
this._lengthCalculator = naiveLength
this._length = this._itemCount
for (var key in this._cache) {
this._cache[key].length = 1
}
} else {
this._lengthCalculator = lC
this._length = 0
for (var key in this._cache) {
this._cache[key].length = this._lengthCalculator(this._cache[key].value)
this._length += this._cache[key].length
}
}
if (this._length > this._max) trim(this)
}
, get : function () { return this._lengthCalculator }
, enumerable : true
})
Object.defineProperty(LRUCache.prototype, "length",
{ get : function () { return this._length }
, enumerable : true
})
Object.defineProperty(LRUCache.prototype, "itemCount",
{ get : function () { return this._itemCount }
, enumerable : true
})
LRUCache.prototype.forEach = function (fn, thisp) {
thisp = thisp || this
var i = 0
var itemCount = this._itemCount
for (var k = this._mru - 1; k >= 0 && i < itemCount; k--) if (this._lruList[k]) {
i++
var hit = this._lruList[k]
if (isStale(this, hit)) {
del(this, hit)
if (!this._allowStale) hit = undefined
}
if (hit) {
fn.call(thisp, hit.value, hit.key, this)
}
}
}
LRUCache.prototype.keys = function () {
var keys = new Array(this._itemCount)
var i = 0
for (var k = this._mru - 1; k >= 0 && i < this._itemCount; k--) if (this._lruList[k]) {
var hit = this._lruList[k]
keys[i++] = hit.key
}
return keys
}
LRUCache.prototype.values = function () {
var values = new Array(this._itemCount)
var i = 0
for (var k = this._mru - 1; k >= 0 && i < this._itemCount; k--) if (this._lruList[k]) {
var hit = this._lruList[k]
values[i++] = hit.value
}
return values
}
LRUCache.prototype.reset = function () {
if (this._dispose && this._cache) {
for (var k in this._cache) {
this._dispose(k, this._cache[k].value)
}
}
this._cache = Object.create(null) // hash of items by key
this._lruList = Object.create(null) // list of items in order of use recency
this._mru = 0 // most recently used
this._lru = 0 // least recently used
this._length = 0 // number of items in the list
this._itemCount = 0
}
LRUCache.prototype.dump = function () {
var arr = []
var i = 0
for (var k = this._mru - 1; k >= 0 && i < this._itemCount; k--) if (this._lruList[k]) {
var hit = this._lruList[k]
if (!isStale(this, hit)) {
//Do not store staled hits
++i
arr.push({
k: hit.key,
v: hit.value,
e: hit.now + (hit.maxAge || 0)
});
}
}
//arr has the most read first
return arr
}
LRUCache.prototype.dumpLru = function () {
return this._lruList
}
LRUCache.prototype.set = function (key, value, maxAge) {
maxAge = maxAge || this._maxAge
typeCheckKey(key)
var now = maxAge ? Date.now() : 0
var len = this._lengthCalculator(value)
if (hOP(this._cache, key)) {
if (len > this._max) {
del(this, this._cache[key])
return false
}
// dispose of the old one before overwriting
if (this._dispose)
this._dispose(key, this._cache[key].value)
this._cache[key].now = now
this._cache[key].maxAge = maxAge
this._cache[key].value = value
this._length += (len - this._cache[key].length)
this._cache[key].length = len
this.get(key)
if (this._length > this._max)
trim(this)
return true
}
var hit = new Entry(key, value, this._mru++, len, now, maxAge)
// oversized objects fall out of cache automatically.
if (hit.length > this._max) {
if (this._dispose) this._dispose(key, value)
return false
}
this._length += hit.length
this._lruList[hit.lu] = this._cache[key] = hit
this._itemCount ++
if (this._length > this._max)
trim(this)
return true
}
LRUCache.prototype.has = function (key) {
typeCheckKey(key)
if (!hOP(this._cache, key)) return false
var hit = this._cache[key]
if (isStale(this, hit)) {
return false
}
return true
}
LRUCache.prototype.get = function (key) {
typeCheckKey(key)
return get(this, key, true)
}
LRUCache.prototype.peek = function (key) {
typeCheckKey(key)
return get(this, key, false)
}
LRUCache.prototype.pop = function () {
var hit = this._lruList[this._lru]
del(this, hit)
return hit || null
}
LRUCache.prototype.del = function (key) {
typeCheckKey(key)
del(this, this._cache[key])
}
LRUCache.prototype.load = function (arr) {
//reset the cache
this.reset();
var now = Date.now()
//A previous serialized cache has the most recent items first
for (var l = arr.length - 1; l >= 0; l-- ) {
var hit = arr[l]
typeCheckKey(hit.k)
var expiresAt = hit.e || 0
if (expiresAt === 0) {
//the item was created without expiration in a non aged cache
this.set(hit.k, hit.v)
} else {
var maxAge = expiresAt - now
//dont add already expired items
if (maxAge > 0) this.set(hit.k, hit.v, maxAge)
}
}
}
function get (self, key, doUse) {
typeCheckKey(key)
var hit = self._cache[key]
if (hit) {
if (isStale(self, hit)) {
del(self, hit)
if (!self._allowStale) hit = undefined
} else {
if (doUse) use(self, hit)
}
if (hit) hit = hit.value
}
return hit
}
function isStale(self, hit) {
if (!hit || (!hit.maxAge && !self._maxAge)) return false
var stale = false;
var diff = Date.now() - hit.now
if (hit.maxAge) {
stale = diff > hit.maxAge
} else {
stale = self._maxAge && (diff > self._maxAge)
}
return stale;
}
function use (self, hit) {
shiftLU(self, hit)
hit.lu = self._mru ++
self._lruList[hit.lu] = hit
}
function trim (self) {
while (self._lru < self._mru && self._length > self._max)
del(self, self._lruList[self._lru])
}
function shiftLU (self, hit) {
delete self._lruList[ hit.lu ]
while (self._lru < self._mru && !self._lruList[self._lru]) self._lru ++
}
function del (self, hit) {
if (hit) {
if (self._dispose) self._dispose(hit.key, hit.value)
self._length -= hit.length
self._itemCount --
delete self._cache[ hit.key ]
shiftLU(self, hit)
}
}
// classy, since V8 prefers predictable objects.
function Entry (key, value, lu, length, now, maxAge) {
this.key = key
this.value = value
this.lu = lu
this.length = length
this.now = now
if (maxAge) this.maxAge = maxAge
}
})()

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{
"_args": [
[
"lru-cache@^2.5.0",
"C:\\Users\\x2mjbyrn\\Source\\Repos\\Skeleton\\node_modules\\cross-spawn"
]
],
"_from": "lru-cache@>=2.5.0-0 <3.0.0-0",
"_id": "lru-cache@2.7.3",
"_inCache": true,
"_location": "/lru-cache",
"_nodeVersion": "4.0.0",
"_npmUser": {
"email": "i@izs.me",
"name": "isaacs"
},
"_npmVersion": "3.3.2",
"_phantomChildren": {},
"_requested": {
"name": "lru-cache",
"raw": "lru-cache@^2.5.0",
"rawSpec": "^2.5.0",
"scope": null,
"spec": ">=2.5.0-0 <3.0.0-0",
"type": "range"
},
"_requiredBy": [
"/cross-spawn"
],
"_resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-2.7.3.tgz",
"_shasum": "6d4524e8b955f95d4f5b58851ce21dd72fb4e952",
"_shrinkwrap": null,
"_spec": "lru-cache@^2.5.0",
"_where": "C:\\Users\\x2mjbyrn\\Source\\Repos\\Skeleton\\node_modules\\cross-spawn",
"author": {
"email": "i@izs.me",
"name": "Isaac Z. Schlueter"
},
"bugs": {
"url": "https://github.com/isaacs/node-lru-cache/issues"
},
"dependencies": {},
"description": "A cache object that deletes the least-recently-used items.",
"devDependencies": {
"tap": "^1.2.0",
"weak": ""
},
"directories": {},
"dist": {
"shasum": "6d4524e8b955f95d4f5b58851ce21dd72fb4e952",
"tarball": "https://registry.npmjs.org/lru-cache/-/lru-cache-2.7.3.tgz"
},
"gitHead": "292048199f6d28b77fbe584279a1898e25e4c714",
"homepage": "https://github.com/isaacs/node-lru-cache#readme",
"installable": true,
"keywords": [
"cache",
"lru",
"mru"
],
"license": "ISC",
"main": "lib/lru-cache.js",
"maintainers": [
{
"name": "isaacs",
"email": "isaacs@npmjs.com"
},
{
"name": "othiym23",
"email": "ogd@aoaioxxysz.net"
}
],
"name": "lru-cache",
"optionalDependencies": {},
"repository": {
"type": "git",
"url": "git://github.com/isaacs/node-lru-cache.git"
},
"scripts": {
"test": "tap test --gc"
},
"version": "2.7.3"
}

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var test = require("tap").test
, LRU = require("../")
test("basic", function (t) {
var cache = new LRU({max: 10})
cache.set("key", "value")
t.equal(cache.get("key"), "value")
t.equal(cache.get("nada"), undefined)
t.equal(cache.length, 1)
t.equal(cache.max, 10)
t.end()
})
test("least recently set", function (t) {
var cache = new LRU(2)
cache.set("a", "A")
cache.set("b", "B")
cache.set("c", "C")
t.equal(cache.get("c"), "C")
t.equal(cache.get("b"), "B")
t.equal(cache.get("a"), undefined)
t.end()
})
test("lru recently gotten", function (t) {
var cache = new LRU(2)
cache.set("a", "A")
cache.set("b", "B")
cache.get("a")
cache.set("c", "C")
t.equal(cache.get("c"), "C")
t.equal(cache.get("b"), undefined)
t.equal(cache.get("a"), "A")
t.end()
})
test("del", function (t) {
var cache = new LRU(2)
cache.set("a", "A")
cache.del("a")
t.equal(cache.get("a"), undefined)
t.end()
})
test("max", function (t) {
var cache = new LRU(3)
// test changing the max, verify that the LRU items get dropped.
cache.max = 100
for (var i = 0; i < 100; i ++) cache.set(i, i)
t.equal(cache.length, 100)
for (var i = 0; i < 100; i ++) {
t.equal(cache.get(i), i)
}
cache.max = 3
t.equal(cache.length, 3)
for (var i = 0; i < 97; i ++) {
t.equal(cache.get(i), undefined)
}
for (var i = 98; i < 100; i ++) {
t.equal(cache.get(i), i)
}
// now remove the max restriction, and try again.
cache.max = "hello"
for (var i = 0; i < 100; i ++) cache.set(i, i)
t.equal(cache.length, 100)
for (var i = 0; i < 100; i ++) {
t.equal(cache.get(i), i)
}
// should trigger an immediate resize
cache.max = 3
t.equal(cache.length, 3)
for (var i = 0; i < 97; i ++) {
t.equal(cache.get(i), undefined)
}
for (var i = 98; i < 100; i ++) {
t.equal(cache.get(i), i)
}
t.end()
})
test("reset", function (t) {
var cache = new LRU(10)
cache.set("a", "A")
cache.set("b", "B")
cache.reset()
t.equal(cache.length, 0)
t.equal(cache.max, 10)
t.equal(cache.get("a"), undefined)
t.equal(cache.get("b"), undefined)
t.end()
})
test("basic with weighed length", function (t) {
var cache = new LRU({
max: 100,
length: function (item) { return item.size }
})
cache.set("key", {val: "value", size: 50})
t.equal(cache.get("key").val, "value")
t.equal(cache.get("nada"), undefined)
t.equal(cache.lengthCalculator(cache.get("key")), 50)
t.equal(cache.length, 50)
t.equal(cache.max, 100)
t.end()
})
test("weighed length item too large", function (t) {
var cache = new LRU({
max: 10,
length: function (item) { return item.size }
})
t.equal(cache.max, 10)
// should fall out immediately
cache.set("key", {val: "value", size: 50})
t.equal(cache.length, 0)
t.equal(cache.get("key"), undefined)
t.end()
})
test("least recently set with weighed length", function (t) {
var cache = new LRU({
max:8,
length: function (item) { return item.length }
})
cache.set("a", "A")
cache.set("b", "BB")
cache.set("c", "CCC")
cache.set("d", "DDDD")
t.equal(cache.get("d"), "DDDD")
t.equal(cache.get("c"), "CCC")
t.equal(cache.get("b"), undefined)
t.equal(cache.get("a"), undefined)
t.end()
})
test("lru recently gotten with weighed length", function (t) {
var cache = new LRU({
max: 8,
length: function (item) { return item.length }
})
cache.set("a", "A")
cache.set("b", "BB")
cache.set("c", "CCC")
cache.get("a")
cache.get("b")
cache.set("d", "DDDD")
t.equal(cache.get("c"), undefined)
t.equal(cache.get("d"), "DDDD")
t.equal(cache.get("b"), "BB")
t.equal(cache.get("a"), "A")
t.end()
})
test("lru recently updated with weighed length", function (t) {
var cache = new LRU({
max: 8,
length: function (item) { return item.length }
})
cache.set("a", "A")
cache.set("b", "BB")
cache.set("c", "CCC")
t.equal(cache.length, 6) //CCC BB A
cache.set("a", "+A")
t.equal(cache.length, 7) //+A CCC BB
cache.set("b", "++BB")
t.equal(cache.length, 6) //++BB +A
t.equal(cache.get("c"), undefined)
cache.set("c", "oversized")
t.equal(cache.length, 6) //++BB +A
t.equal(cache.get("c"), undefined)
cache.set("a", "oversized")
t.equal(cache.length, 4) //++BB
t.equal(cache.get("a"), undefined)
t.equal(cache.get("b"), "++BB")
t.end()
})
test("set returns proper booleans", function(t) {
var cache = new LRU({
max: 5,
length: function (item) { return item.length }
})
t.equal(cache.set("a", "A"), true)
// should return false for max exceeded
t.equal(cache.set("b", "donuts"), false)
t.equal(cache.set("b", "B"), true)
t.equal(cache.set("c", "CCCC"), true)
t.end()
})
test("drop the old items", function(t) {
var cache = new LRU({
max: 5,
maxAge: 50
})
cache.set("a", "A")
setTimeout(function () {
cache.set("b", "b")
t.equal(cache.get("a"), "A")
}, 25)
setTimeout(function () {
cache.set("c", "C")
// timed out
t.notOk(cache.get("a"))
}, 60 + 25)
setTimeout(function () {
t.notOk(cache.get("b"))
t.equal(cache.get("c"), "C")
}, 90)
setTimeout(function () {
t.notOk(cache.get("c"))
t.end()
}, 155)
})
test("individual item can have it's own maxAge", function(t) {
var cache = new LRU({
max: 5,
maxAge: 50
})
cache.set("a", "A", 20)
setTimeout(function () {
t.notOk(cache.get("a"))
t.end()
}, 25)
})
test("individual item can have it's own maxAge > cache's", function(t) {
var cache = new LRU({
max: 5,
maxAge: 20
})
cache.set("a", "A", 50)
setTimeout(function () {
t.equal(cache.get("a"), "A")
t.end()
}, 25)
})
test("disposal function", function(t) {
var disposed = false
var cache = new LRU({
max: 1,
dispose: function (k, n) {
disposed = n
}
})
cache.set(1, 1)
cache.set(2, 2)
t.equal(disposed, 1)
cache.set(3, 3)
t.equal(disposed, 2)
cache.reset()
t.equal(disposed, 3)
t.end()
})
test("disposal function on too big of item", function(t) {
var disposed = false
var cache = new LRU({
max: 1,
length: function (k) {
return k.length
},
dispose: function (k, n) {
disposed = n
}
})
var obj = [ 1, 2 ]
t.equal(disposed, false)
cache.set("obj", obj)
t.equal(disposed, obj)
t.end()
})
test("has()", function(t) {
var cache = new LRU({
max: 1,
maxAge: 10
})
cache.set('foo', 'bar')
t.equal(cache.has('foo'), true)
cache.set('blu', 'baz')
t.equal(cache.has('foo'), false)
t.equal(cache.has('blu'), true)
setTimeout(function() {
t.equal(cache.has('blu'), false)
t.end()
}, 15)
})
test("stale", function(t) {
var cache = new LRU({
maxAge: 10,
stale: true
})
cache.set('foo', 'bar')
t.equal(cache.get('foo'), 'bar')
t.equal(cache.has('foo'), true)
setTimeout(function() {
t.equal(cache.has('foo'), false)
t.equal(cache.get('foo'), 'bar')
t.equal(cache.get('foo'), undefined)
t.end()
}, 15)
})
test("lru update via set", function(t) {
var cache = LRU({ max: 2 });
cache.set('foo', 1);
cache.set('bar', 2);
cache.del('bar');
cache.set('baz', 3);
cache.set('qux', 4);
t.equal(cache.get('foo'), undefined)
t.equal(cache.get('bar'), undefined)
t.equal(cache.get('baz'), 3)
t.equal(cache.get('qux'), 4)
t.end()
})
test("least recently set w/ peek", function (t) {
var cache = new LRU(2)
cache.set("a", "A")
cache.set("b", "B")
t.equal(cache.peek("a"), "A")
cache.set("c", "C")
t.equal(cache.get("c"), "C")
t.equal(cache.get("b"), "B")
t.equal(cache.get("a"), undefined)
t.end()
})
test("pop the least used item", function (t) {
var cache = new LRU(3)
, last
cache.set("a", "A")
cache.set("b", "B")
cache.set("c", "C")
t.equal(cache.length, 3)
t.equal(cache.max, 3)
// Ensure we pop a, c, b
cache.get("b", "B")
last = cache.pop()
t.equal(last.key, "a")
t.equal(last.value, "A")
t.equal(cache.length, 2)
t.equal(cache.max, 3)
last = cache.pop()
t.equal(last.key, "c")
t.equal(last.value, "C")
t.equal(cache.length, 1)
t.equal(cache.max, 3)
last = cache.pop()
t.equal(last.key, "b")
t.equal(last.value, "B")
t.equal(cache.length, 0)
t.equal(cache.max, 3)
last = cache.pop()
t.equal(last, null)
t.equal(cache.length, 0)
t.equal(cache.max, 3)
t.end()
})

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node_modules/lru-cache/test/foreach.js generated vendored Normal file
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var test = require('tap').test
var LRU = require('../')
test('forEach', function (t) {
var l = new LRU(5)
for (var i = 0; i < 10; i ++) {
l.set(i.toString(), i.toString(2))
}
var i = 9
l.forEach(function (val, key, cache) {
t.equal(cache, l)
t.equal(key, i.toString())
t.equal(val, i.toString(2))
i -= 1
})
// get in order of most recently used
l.get(6)
l.get(8)
var order = [ 8, 6, 9, 7, 5 ]
var i = 0
l.forEach(function (val, key, cache) {
var j = order[i ++]
t.equal(cache, l)
t.equal(key, j.toString())
t.equal(val, j.toString(2))
})
t.equal(i, order.length);
t.end()
})
test('keys() and values()', function (t) {
var l = new LRU(5)
for (var i = 0; i < 10; i ++) {
l.set(i.toString(), i.toString(2))
}
t.similar(l.keys(), ['9', '8', '7', '6', '5'])
t.similar(l.values(), ['1001', '1000', '111', '110', '101'])
// get in order of most recently used
l.get(6)
l.get(8)
t.similar(l.keys(), ['8', '6', '9', '7', '5'])
t.similar(l.values(), ['1000', '110', '1001', '111', '101'])
t.end()
})
test('all entries are iterated over', function(t) {
var l = new LRU(5)
for (var i = 0; i < 10; i ++) {
l.set(i.toString(), i.toString(2))
}
var i = 0
l.forEach(function (val, key, cache) {
if (i > 0) {
cache.del(key)
}
i += 1
})
t.equal(i, 5)
t.equal(l.keys().length, 1)
t.end()
})
test('all stale entries are removed', function(t) {
var l = new LRU({ max: 5, maxAge: -5, stale: true })
for (var i = 0; i < 10; i ++) {
l.set(i.toString(), i.toString(2))
}
var i = 0
l.forEach(function () {
i += 1
})
t.equal(i, 5)
t.equal(l.keys().length, 0)
t.end()
})
test('expires', function (t) {
var l = new LRU({
max: 10,
maxAge: 50
})
for (var i = 0; i < 10; i++) {
l.set(i.toString(), i.toString(2), ((i % 2) ? 25 : undefined))
}
var i = 0
var order = [ 8, 6, 4, 2, 0 ]
setTimeout(function () {
l.forEach(function (val, key, cache) {
var j = order[i++]
t.equal(cache, l)
t.equal(key, j.toString())
t.equal(val, j.toString(2))
})
t.equal(i, order.length);
setTimeout(function () {
var count = 0;
l.forEach(function (val, key, cache) { count++; })
t.equal(0, count);
t.end()
}, 25)
}, 26)
})

51
node_modules/lru-cache/test/memory-leak.js generated vendored Normal file
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#!/usr/bin/env node --expose_gc
var weak = require('weak');
var test = require('tap').test
var LRU = require('../')
var l = new LRU({ max: 10 })
var refs = 0
function X() {
refs ++
weak(this, deref)
}
function deref() {
refs --
}
test('no leaks', function (t) {
// fill up the cache
for (var i = 0; i < 100; i++) {
l.set(i, new X);
// throw some gets in there, too.
if (i % 2 === 0)
l.get(i / 2)
}
gc()
var start = process.memoryUsage()
// capture the memory
var startRefs = refs
// do it again, but more
for (var i = 0; i < 10000; i++) {
l.set(i, new X);
// throw some gets in there, too.
if (i % 2 === 0)
l.get(i / 2)
}
gc()
var end = process.memoryUsage()
t.equal(refs, startRefs, 'no leaky refs')
console.error('start: %j\n' +
'end: %j', start, end);
t.pass();
t.end();
})

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node_modules/lru-cache/test/serialize.js generated vendored Normal file
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var test = require('tap').test
var LRU = require('../')
test('dump', function (t) {
var cache = new LRU()
t.equal(cache.dump().length, 0, "nothing in dump for empty cache")
cache.set("a", "A")
cache.set("b", "B")
t.deepEqual(cache.dump(), [
{ k: "b", v: "B", e: 0 },
{ k: "a", v: "A", e: 0 }
])
cache.set("a", "A");
t.deepEqual(cache.dump(), [
{ k: "a", v: "A", e: 0 },
{ k: "b", v: "B", e: 0 }
])
cache.get("b");
t.deepEqual(cache.dump(), [
{ k: "b", v: "B", e: 0 },
{ k: "a", v: "A", e: 0 }
])
cache.del("a");
t.deepEqual(cache.dump(), [
{ k: "b", v: "B", e: 0 }
])
t.end()
})
test("do not dump stale items", function(t) {
var cache = new LRU({
max: 5,
maxAge: 50
})
//expires at 50
cache.set("a", "A")
setTimeout(function () {
//expires at 75
cache.set("b", "B")
var s = cache.dump()
t.equal(s.length, 2)
t.equal(s[0].k, "b")
t.equal(s[1].k, "a")
}, 25)
setTimeout(function () {
//expires at 110
cache.set("c", "C")
var s = cache.dump()
t.equal(s.length, 2)
t.equal(s[0].k, "c")
t.equal(s[1].k, "b")
}, 60)
setTimeout(function () {
//expires at 130
cache.set("d", "D", 40)
var s = cache.dump()
t.equal(s.length, 2)
t.equal(s[0].k, "d")
t.equal(s[1].k, "c")
}, 90)
setTimeout(function () {
var s = cache.dump()
t.equal(s.length, 1)
t.equal(s[0].k, "d")
}, 120)
setTimeout(function () {
var s = cache.dump()
t.deepEqual(s, [])
t.end()
}, 155)
})
test("load basic cache", function(t) {
var cache = new LRU(),
copy = new LRU()
cache.set("a", "A")
cache.set("b", "B")
copy.load(cache.dump())
t.deepEquals(cache.dump(), copy.dump())
t.end()
})
test("load staled cache", function(t) {
var cache = new LRU({maxAge: 50}),
copy = new LRU({maxAge: 50}),
arr
//expires at 50
cache.set("a", "A")
setTimeout(function () {
//expires at 80
cache.set("b", "B")
arr = cache.dump()
t.equal(arr.length, 2)
}, 30)
setTimeout(function () {
copy.load(arr)
t.equal(copy.get("a"), undefined)
t.equal(copy.get("b"), "B")
}, 60)
setTimeout(function () {
t.equal(copy.get("b"), undefined)
t.end()
}, 90)
})
test("load to other size cache", function(t) {
var cache = new LRU({max: 2}),
copy = new LRU({max: 1})
cache.set("a", "A")
cache.set("b", "B")
copy.load(cache.dump())
t.equal(copy.get("a"), undefined)
t.equal(copy.get("b"), "B")
//update the last read from original cache
cache.get("a")
copy.load(cache.dump())
t.equal(copy.get("a"), "A")
t.equal(copy.get("b"), undefined)
t.end()
})
test("load to other age cache", function(t) {
var cache = new LRU({maxAge: 50}),
aged = new LRU({maxAge: 100}),
simple = new LRU(),
arr,
expired
//created at 0
//a would be valid till 0 + 50
cache.set("a", "A")
setTimeout(function () {
//created at 20
//b would be valid till 20 + 50
cache.set("b", "B")
//b would be valid till 20 + 70
cache.set("c", "C", 70)
arr = cache.dump()
t.equal(arr.length, 3)
}, 20)
setTimeout(function () {
t.equal(cache.get("a"), undefined)
t.equal(cache.get("b"), "B")
t.equal(cache.get("c"), "C")
aged.load(arr)
t.equal(aged.get("a"), undefined)
t.equal(aged.get("b"), "B")
t.equal(aged.get("c"), "C")
simple.load(arr)
t.equal(simple.get("a"), undefined)
t.equal(simple.get("b"), "B")
t.equal(simple.get("c"), "C")
}, 60)
setTimeout(function () {
t.equal(cache.get("a"), undefined)
t.equal(cache.get("b"), undefined)
t.equal(cache.get("c"), "C")
aged.load(arr)
t.equal(aged.get("a"), undefined)
t.equal(aged.get("b"), undefined)
t.equal(aged.get("c"), "C")
simple.load(arr)
t.equal(simple.get("a"), undefined)
t.equal(simple.get("b"), undefined)
t.equal(simple.get("c"), "C")
}, 80)
setTimeout(function () {
t.equal(cache.get("a"), undefined)
t.equal(cache.get("b"), undefined)
t.equal(cache.get("c"), undefined)
aged.load(arr)
t.equal(aged.get("a"), undefined)
t.equal(aged.get("b"), undefined)
t.equal(aged.get("c"), undefined)
simple.load(arr)
t.equal(simple.get("a"), undefined)
t.equal(simple.get("b"), undefined)
t.equal(simple.get("c"), undefined)
t.end()
}, 100)
})