Firebase Update

This commit is contained in:
Lukas Nowy
2018-12-22 23:30:39 +01:00
parent befb44764d
commit acffe619b3
11523 changed files with 1614327 additions and 930246 deletions

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@ -18,8 +18,8 @@ var LRU = require("lru-cache")
, length: function (n, key) { return n * 2 + key.length }
, dispose: function (key, n) { n.close() }
, maxAge: 1000 * 60 * 60 }
, cache = LRU(options)
, otherCache = LRU(50) // sets just the max size
, cache = new LRU(options)
, otherCache = new LRU(50) // sets just the max size
cache.set("key", "value")
cache.get("key") // "value"
@ -49,10 +49,13 @@ away.
* `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`.
to `Infinity`. Setting it to a non-number or negative number will
throw a `TypeError`. Setting it to 0 makes it be `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.
Setting this to a negative value will make everything seem old!
Setting it to a non-number will throw a `TypeError`.
* `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, key){return n.length}`. The default is
@ -76,6 +79,11 @@ away.
it'll be called whenever a `set()` operation overwrites an existing
key. If you set this option, `dispose()` will only be called when a
key falls out of the cache, not when it is overwritten.
* `updateAgeOnGet` When using time-expiring entries with `maxAge`,
setting this to `true` will make each item's effective time update
to the current time whenever it is retrieved from cache, causing it
to not expire. (It can still fall out of cache based on recency of
use, of course.)
## API

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@ -1,39 +1,20 @@
'use strict'
module.exports = LRUCache
// This will be a proper iterable 'Map' in engines that support it,
// or a fakey-fake PseudoMap in older versions.
var Map = require('pseudomap')
var util = require('util')
// A linked list to keep track of recently-used-ness
var Yallist = require('yallist')
const Yallist = require('yallist')
// use symbols if possible, otherwise just _props
var hasSymbol = typeof Symbol === 'function'
var makeSymbol
if (hasSymbol) {
makeSymbol = function (key) {
return Symbol(key)
}
} else {
makeSymbol = function (key) {
return '_' + key
}
}
const MAX = Symbol('max')
const LENGTH = Symbol('length')
const LENGTH_CALCULATOR = Symbol('lengthCalculator')
const ALLOW_STALE = Symbol('allowStale')
const MAX_AGE = Symbol('maxAge')
const DISPOSE = Symbol('dispose')
const NO_DISPOSE_ON_SET = Symbol('noDisposeOnSet')
const LRU_LIST = Symbol('lruList')
const CACHE = Symbol('cache')
const UPDATE_AGE_ON_GET = Symbol('updateAgeOnGet')
var MAX = makeSymbol('max')
var LENGTH = makeSymbol('length')
var LENGTH_CALCULATOR = makeSymbol('lengthCalculator')
var ALLOW_STALE = makeSymbol('allowStale')
var MAX_AGE = makeSymbol('maxAge')
var DISPOSE = makeSymbol('dispose')
var NO_DISPOSE_ON_SET = makeSymbol('noDisposeOnSet')
var LRU_LIST = makeSymbol('lruList')
var CACHE = makeSymbol('cache')
function naiveLength () { return 1 }
const naiveLength = () => 1
// lruList is a yallist where the head is the youngest
// item, and the tail is the oldest. the list contains the Hit
@ -43,425 +24,311 @@ function naiveLength () { return 1 }
//
// cache is a Map (or PseudoMap) that matches the keys to
// the Yallist.Node object.
function LRUCache (options) {
if (!(this instanceof LRUCache)) {
return new LRUCache(options)
class LRUCache {
constructor (options) {
if (typeof options === 'number')
options = { max: options }
if (!options)
options = {}
if (options.max && (typeof options.max !== 'number' || options.max < 0))
throw new TypeError('max must be a non-negative number')
// Kind of weird to have a default max of Infinity, but oh well.
const max = this[MAX] = options.max || Infinity
const lc = options.length || naiveLength
this[LENGTH_CALCULATOR] = (typeof lc !== 'function') ? naiveLength : lc
this[ALLOW_STALE] = options.stale || false
if (options.maxAge && typeof options.maxAge !== 'number')
throw new TypeError('maxAge must be a number')
this[MAX_AGE] = options.maxAge || 0
this[DISPOSE] = options.dispose
this[NO_DISPOSE_ON_SET] = options.noDisposeOnSet || false
this[UPDATE_AGE_ON_GET] = options.updateAgeOnGet || false
this.reset()
}
if (typeof options === 'number') {
options = { max: options }
}
// resize the cache when the max changes.
set max (mL) {
if (typeof mL !== 'number' || mL < 0)
throw new TypeError('max must be a non-negative number')
if (!options) {
options = {}
}
var max = this[MAX] = options.max
// Kind of weird to have a default max of Infinity, but oh well.
if (!max ||
!(typeof max === 'number') ||
max <= 0) {
this[MAX] = Infinity
}
var lc = options.length || naiveLength
if (typeof lc !== 'function') {
lc = naiveLength
}
this[LENGTH_CALCULATOR] = lc
this[ALLOW_STALE] = options.stale || false
this[MAX_AGE] = options.maxAge || 0
this[DISPOSE] = options.dispose
this[NO_DISPOSE_ON_SET] = options.noDisposeOnSet || false
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
this[MAX] = mL || Infinity
trim(this)
},
get: function () {
}
get max () {
return this[MAX]
},
enumerable: true
})
}
Object.defineProperty(LRUCache.prototype, 'allowStale', {
set: function (allowStale) {
set allowStale (allowStale) {
this[ALLOW_STALE] = !!allowStale
},
get: function () {
}
get allowStale () {
return this[ALLOW_STALE]
},
enumerable: true
})
}
set maxAge (mA) {
if (typeof mA !== 'number')
throw new TypeError('maxAge must be a non-negative number')
Object.defineProperty(LRUCache.prototype, 'maxAge', {
set: function (mA) {
if (!mA || !(typeof mA === 'number') || mA < 0) {
mA = 0
}
this[MAX_AGE] = mA
trim(this)
},
get: function () {
}
get maxAge () {
return this[MAX_AGE]
},
enumerable: true
})
}
// resize the cache when the lengthCalculator changes.
Object.defineProperty(LRUCache.prototype, 'lengthCalculator', {
set: function (lC) {
if (typeof lC !== 'function') {
// resize the cache when the lengthCalculator changes.
set lengthCalculator (lC) {
if (typeof lC !== 'function')
lC = naiveLength
}
if (lC !== this[LENGTH_CALCULATOR]) {
this[LENGTH_CALCULATOR] = lC
this[LENGTH] = 0
this[LRU_LIST].forEach(function (hit) {
this[LRU_LIST].forEach(hit => {
hit.length = this[LENGTH_CALCULATOR](hit.value, hit.key)
this[LENGTH] += hit.length
}, this)
})
}
trim(this)
},
get: function () { return this[LENGTH_CALCULATOR] },
enumerable: true
})
Object.defineProperty(LRUCache.prototype, 'length', {
get: function () { return this[LENGTH] },
enumerable: true
})
Object.defineProperty(LRUCache.prototype, 'itemCount', {
get: function () { return this[LRU_LIST].length },
enumerable: true
})
LRUCache.prototype.rforEach = function (fn, thisp) {
thisp = thisp || this
for (var walker = this[LRU_LIST].tail; walker !== null;) {
var prev = walker.prev
forEachStep(this, fn, walker, thisp)
walker = prev
}
}
get lengthCalculator () { return this[LENGTH_CALCULATOR] }
function forEachStep (self, fn, node, thisp) {
var hit = node.value
if (isStale(self, hit)) {
del(self, node)
if (!self[ALLOW_STALE]) {
hit = undefined
get length () { return this[LENGTH] }
get itemCount () { return this[LRU_LIST].length }
rforEach (fn, thisp) {
thisp = thisp || this
for (let walker = this[LRU_LIST].tail; walker !== null;) {
const prev = walker.prev
forEachStep(this, fn, walker, thisp)
walker = prev
}
}
if (hit) {
fn.call(thisp, hit.value, hit.key, self)
}
}
LRUCache.prototype.forEach = function (fn, thisp) {
thisp = thisp || this
for (var walker = this[LRU_LIST].head; walker !== null;) {
var next = walker.next
forEachStep(this, fn, walker, thisp)
walker = next
}
}
LRUCache.prototype.keys = function () {
return this[LRU_LIST].toArray().map(function (k) {
return k.key
}, this)
}
LRUCache.prototype.values = function () {
return this[LRU_LIST].toArray().map(function (k) {
return k.value
}, this)
}
LRUCache.prototype.reset = function () {
if (this[DISPOSE] &&
this[LRU_LIST] &&
this[LRU_LIST].length) {
this[LRU_LIST].forEach(function (hit) {
this[DISPOSE](hit.key, hit.value)
}, this)
forEach (fn, thisp) {
thisp = thisp || this
for (let walker = this[LRU_LIST].head; walker !== null;) {
const next = walker.next
forEachStep(this, fn, walker, thisp)
walker = next
}
}
this[CACHE] = new Map() // hash of items by key
this[LRU_LIST] = new Yallist() // list of items in order of use recency
this[LENGTH] = 0 // length of items in the list
}
keys () {
return this[LRU_LIST].toArray().map(k => k.key)
}
LRUCache.prototype.dump = function () {
return this[LRU_LIST].map(function (hit) {
if (!isStale(this, hit)) {
return {
values () {
return this[LRU_LIST].toArray().map(k => k.value)
}
reset () {
if (this[DISPOSE] &&
this[LRU_LIST] &&
this[LRU_LIST].length) {
this[LRU_LIST].forEach(hit => this[DISPOSE](hit.key, hit.value))
}
this[CACHE] = new Map() // hash of items by key
this[LRU_LIST] = new Yallist() // list of items in order of use recency
this[LENGTH] = 0 // length of items in the list
}
dump () {
return this[LRU_LIST].map(hit =>
isStale(this, hit) ? false : {
k: hit.key,
v: hit.value,
e: hit.now + (hit.maxAge || 0)
}).toArray().filter(h => h)
}
dumpLru () {
return this[LRU_LIST]
}
set (key, value, maxAge) {
maxAge = maxAge || this[MAX_AGE]
if (maxAge && typeof maxAge !== 'number')
throw new TypeError('maxAge must be a number')
const now = maxAge ? Date.now() : 0
const len = this[LENGTH_CALCULATOR](value, key)
if (this[CACHE].has(key)) {
if (len > this[MAX]) {
del(this, this[CACHE].get(key))
return false
}
}
}, this).toArray().filter(function (h) {
return h
})
}
LRUCache.prototype.dumpLru = function () {
return this[LRU_LIST]
}
const node = this[CACHE].get(key)
const item = node.value
LRUCache.prototype.inspect = function (n, opts) {
var str = 'LRUCache {'
var extras = false
var as = this[ALLOW_STALE]
if (as) {
str += '\n allowStale: true'
extras = true
}
var max = this[MAX]
if (max && max !== Infinity) {
if (extras) {
str += ','
}
str += '\n max: ' + util.inspect(max, opts)
extras = true
}
var maxAge = this[MAX_AGE]
if (maxAge) {
if (extras) {
str += ','
}
str += '\n maxAge: ' + util.inspect(maxAge, opts)
extras = true
}
var lc = this[LENGTH_CALCULATOR]
if (lc && lc !== naiveLength) {
if (extras) {
str += ','
}
str += '\n length: ' + util.inspect(this[LENGTH], opts)
extras = true
}
var didFirst = false
this[LRU_LIST].forEach(function (item) {
if (didFirst) {
str += ',\n '
} else {
if (extras) {
str += ',\n'
// dispose of the old one before overwriting
// split out into 2 ifs for better coverage tracking
if (this[DISPOSE]) {
if (!this[NO_DISPOSE_ON_SET])
this[DISPOSE](key, item.value)
}
didFirst = true
str += '\n '
}
var key = util.inspect(item.key).split('\n').join('\n ')
var val = { value: item.value }
if (item.maxAge !== maxAge) {
val.maxAge = item.maxAge
}
if (lc !== naiveLength) {
val.length = item.length
}
if (isStale(this, item)) {
val.stale = true
item.now = now
item.maxAge = maxAge
item.value = value
this[LENGTH] += len - item.length
item.length = len
this.get(key)
trim(this)
return true
}
val = util.inspect(val, opts).split('\n').join('\n ')
str += key + ' => ' + val
})
const hit = new Entry(key, value, len, now, maxAge)
if (didFirst || extras) {
str += '\n'
}
str += '}'
// oversized objects fall out of cache automatically.
if (hit.length > this[MAX]) {
if (this[DISPOSE])
this[DISPOSE](key, value)
return str
}
LRUCache.prototype.set = function (key, value, maxAge) {
maxAge = maxAge || this[MAX_AGE]
var now = maxAge ? Date.now() : 0
var len = this[LENGTH_CALCULATOR](value, key)
if (this[CACHE].has(key)) {
if (len > this[MAX]) {
del(this, this[CACHE].get(key))
return false
}
var node = this[CACHE].get(key)
var item = node.value
// dispose of the old one before overwriting
// split out into 2 ifs for better coverage tracking
if (this[DISPOSE]) {
if (!this[NO_DISPOSE_ON_SET]) {
this[DISPOSE](key, item.value)
}
}
item.now = now
item.maxAge = maxAge
item.value = value
this[LENGTH] += len - item.length
item.length = len
this.get(key)
this[LENGTH] += hit.length
this[LRU_LIST].unshift(hit)
this[CACHE].set(key, this[LRU_LIST].head)
trim(this)
return true
}
var hit = new Entry(key, value, len, now, maxAge)
// oversized objects fall out of cache automatically.
if (hit.length > this[MAX]) {
if (this[DISPOSE]) {
this[DISPOSE](key, value)
}
return false
has (key) {
if (!this[CACHE].has(key)) return false
const hit = this[CACHE].get(key).value
return !isStale(this, hit)
}
this[LENGTH] += hit.length
this[LRU_LIST].unshift(hit)
this[CACHE].set(key, this[LRU_LIST].head)
trim(this)
return true
}
LRUCache.prototype.has = function (key) {
if (!this[CACHE].has(key)) return false
var hit = this[CACHE].get(key).value
if (isStale(this, hit)) {
return false
get (key) {
return get(this, key, true)
}
return true
}
LRUCache.prototype.get = function (key) {
return get(this, key, true)
}
peek (key) {
return get(this, key, false)
}
LRUCache.prototype.peek = function (key) {
return get(this, key, false)
}
pop () {
const node = this[LRU_LIST].tail
if (!node)
return null
LRUCache.prototype.pop = function () {
var node = this[LRU_LIST].tail
if (!node) return null
del(this, node)
return node.value
}
del(this, node)
return node.value
}
LRUCache.prototype.del = function (key) {
del(this, this[CACHE].get(key))
}
del (key) {
del(this, this[CACHE].get(key))
}
LRUCache.prototype.load = function (arr) {
// reset the cache
this.reset()
load (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]
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)
const now = Date.now()
// A previous serialized cache has the most recent items first
for (let l = arr.length - 1; l >= 0; l--) {
const hit = arr[l]
const 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 {
const maxAge = expiresAt - now
// dont add already expired items
if (maxAge > 0) {
this.set(hit.k, hit.v, maxAge)
}
}
}
}
prune () {
this[CACHE].forEach((value, key) => get(this, key, false))
}
}
LRUCache.prototype.prune = function () {
var self = this
this[CACHE].forEach(function (value, key) {
get(self, key, false)
})
}
function get (self, key, doUse) {
var node = self[CACHE].get(key)
const get = (self, key, doUse) => {
const node = self[CACHE].get(key)
if (node) {
var hit = node.value
const hit = node.value
if (isStale(self, hit)) {
del(self, node)
if (!self[ALLOW_STALE]) hit = undefined
if (!self[ALLOW_STALE])
return undefined
} else {
if (doUse) {
if (self[UPDATE_AGE_ON_GET])
node.value.now = Date.now()
self[LRU_LIST].unshiftNode(node)
}
}
if (hit) hit = hit.value
return hit.value
}
return hit
}
function isStale (self, hit) {
if (!hit || (!hit.maxAge && !self[MAX_AGE])) {
const isStale = (self, hit) => {
if (!hit || (!hit.maxAge && !self[MAX_AGE]))
return false
}
var stale = false
var diff = Date.now() - hit.now
if (hit.maxAge) {
stale = diff > hit.maxAge
} else {
stale = self[MAX_AGE] && (diff > self[MAX_AGE])
}
return stale
const diff = Date.now() - hit.now
return hit.maxAge ? diff > hit.maxAge
: self[MAX_AGE] && (diff > self[MAX_AGE])
}
function trim (self) {
const trim = self => {
if (self[LENGTH] > self[MAX]) {
for (var walker = self[LRU_LIST].tail;
self[LENGTH] > self[MAX] && walker !== null;) {
for (let walker = self[LRU_LIST].tail;
self[LENGTH] > self[MAX] && walker !== null;) {
// We know that we're about to delete this one, and also
// what the next least recently used key will be, so just
// go ahead and set it now.
var prev = walker.prev
const prev = walker.prev
del(self, walker)
walker = prev
}
}
}
function del (self, node) {
const del = (self, node) => {
if (node) {
var hit = node.value
if (self[DISPOSE]) {
const hit = node.value
if (self[DISPOSE])
self[DISPOSE](hit.key, hit.value)
}
self[LENGTH] -= hit.length
self[CACHE].delete(hit.key)
self[LRU_LIST].removeNode(node)
}
}
// classy, since V8 prefers predictable objects.
function Entry (key, value, length, now, maxAge) {
this.key = key
this.value = value
this.length = length
this.now = now
this.maxAge = maxAge || 0
class Entry {
constructor (key, value, length, now, maxAge) {
this.key = key
this.value = value
this.length = length
this.now = now
this.maxAge = maxAge || 0
}
}
const forEachStep = (self, fn, node, thisp) => {
let hit = node.value
if (isStale(self, hit)) {
del(self, node)
if (!self[ALLOW_STALE])
hit = undefined
}
if (hit)
fn.call(thisp, hit.value, hit.key, self)
}
module.exports = LRUCache

View File

@ -1,27 +1,27 @@
{
"_from": "lru-cache@^4.1.3",
"_id": "lru-cache@4.1.3",
"_from": "lru-cache@^5.0.0",
"_id": "lru-cache@5.1.1",
"_inBundle": false,
"_integrity": "sha512-fFEhvcgzuIoJVUF8fYr5KR0YqxD238zgObTps31YdADwPPAp82a4M8TrckkWyx7ekNlf9aBcVn81cFwwXngrJA==",
"_integrity": "sha512-KpNARQA3Iwv+jTA0utUVVbrh+Jlrr1Fv0e56GGzAFOXN7dk/FviaDW8LHmK52DlcH4WP2n6gI8vN1aesBFgo9w==",
"_location": "/lru-cache",
"_phantomChildren": {},
"_requested": {
"type": "range",
"registry": true,
"raw": "lru-cache@^4.1.3",
"raw": "lru-cache@^5.0.0",
"name": "lru-cache",
"escapedName": "lru-cache",
"rawSpec": "^4.1.3",
"rawSpec": "^5.0.0",
"saveSpec": null,
"fetchSpec": "^4.1.3"
"fetchSpec": "^5.0.0"
},
"_requiredBy": [
"/google-auth-library"
],
"_resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-4.1.3.tgz",
"_shasum": "a1175cf3496dfc8436c156c334b4955992bce69c",
"_spec": "lru-cache@^4.1.3",
"_where": "C:\\Users\\Georg\\GitHub\\SmartShopper\\express-server\\node_modules\\google-auth-library",
"_resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-5.1.1.tgz",
"_shasum": "1da27e6710271947695daf6848e847f01d84b920",
"_spec": "lru-cache@^5.0.0",
"_where": "D:\\Desktop\\Git\\Firebase\\SmartShopperFirebase\\node_modules\\google-auth-library",
"author": {
"name": "Isaac Z. Schlueter",
"email": "i@izs.me"
@ -31,15 +31,13 @@
},
"bundleDependencies": false,
"dependencies": {
"pseudomap": "^1.0.2",
"yallist": "^2.1.2"
"yallist": "^3.0.2"
},
"deprecated": false,
"description": "A cache object that deletes the least-recently-used items.",
"devDependencies": {
"benchmark": "^2.1.4",
"standard": "^5.4.1",
"tap": "^11.1.4"
"tap": "^12.1.0"
},
"files": [
"index.js"
@ -58,11 +56,12 @@
"url": "git://github.com/isaacs/node-lru-cache.git"
},
"scripts": {
"coveragerport": "tap --coverage-report=html",
"postpublish": "git push origin --all; git push origin --tags",
"posttest": "standard test/*.js index.js",
"postversion": "npm publish",
"preversion": "npm test",
"snap": "TAP_SNAPSHOT=1 tap test/*.js -J",
"test": "tap test/*.js --100 -J"
},
"version": "4.1.3"
"version": "5.1.1"
}