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Diffstat (limited to 'deps/npm/node_modules/cacache/node_modules/lru-cache')
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diff --git a/deps/npm/node_modules/cacache/node_modules/lru-cache/LICENSE b/deps/npm/node_modules/cacache/node_modules/lru-cache/LICENSE new file mode 100644 index 0000000000..19129e315f --- /dev/null +++ b/deps/npm/node_modules/cacache/node_modules/lru-cache/LICENSE @@ -0,0 +1,15 @@ +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. diff --git a/deps/npm/node_modules/cacache/node_modules/lru-cache/README.md b/deps/npm/node_modules/cacache/node_modules/lru-cache/README.md new file mode 100644 index 0000000000..435dfebb7e --- /dev/null +++ b/deps/npm/node_modules/cacache/node_modules/lru-cache/README.md @@ -0,0 +1,166 @@ +# lru cache + +A cache object that deletes the least-recently-used items. + +[](https://travis-ci.org/isaacs/node-lru-cache) [](https://coveralls.io/github/isaacs/node-lru-cache) + +## Installation: + +```javascript +npm install lru-cache --save +``` + +## Usage: + +```javascript +var LRU = require("lru-cache") + , options = { max: 500 + , length: function (n, key) { return n * 2 + key.length } + , dispose: function (key, n) { n.close() } + , maxAge: 1000 * 60 * 60 } + , cache = new LRU(options) + , otherCache = new LRU(50) // sets just the max size + +cache.set("key", "value") +cache.get("key") // "value" + +// non-string keys ARE fully supported +// but note that it must be THE SAME object, not +// just a JSON-equivalent object. +var someObject = { a: 1 } +cache.set(someObject, 'a value') +// Object keys are not toString()-ed +cache.set('[object Object]', 'a different value') +assert.equal(cache.get(someObject), 'a value') +// A similar object with same keys/values won't work, +// because it's a different object identity +assert.equal(cache.get({ a: 1 }), undefined) + +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. + +## 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`. 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 + `function(){return 1}`, which is fine if you want to store `max` + like-sized things. The item is passed as the first argument, and + the key is passed as the second argumnet. +* `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. +* `noDisposeOnSet` By default, if you set a `dispose()` method, then + 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 + +* `set(key, value, maxAge)` +* `get(key) => value` + + Both of these will update the "recently used"-ness of the key. + They do what you think. `maxAge` is optional and overrides the + cache `maxAge` option if provided. + + If the key is not found, `get()` will return `undefined`. + + The key and val can be any value. + +* `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.) + +* `rforEach(function(value,key,cache), [thisp])` + + The same as `cache.forEach(...)` but items are iterated over in + reverse order. (ie, less 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 + +* `prune()` + + Manually iterates over the entire cache proactively pruning old entries diff --git a/deps/npm/node_modules/cacache/node_modules/lru-cache/index.js b/deps/npm/node_modules/cacache/node_modules/lru-cache/index.js new file mode 100644 index 0000000000..573b6b85b9 --- /dev/null +++ b/deps/npm/node_modules/cacache/node_modules/lru-cache/index.js @@ -0,0 +1,334 @@ +'use strict' + +// A linked list to keep track of recently-used-ness +const Yallist = require('yallist') + +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') + +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 +// objects as the entries. +// Each Hit object has a reference to its Yallist.Node. This +// never changes. +// +// cache is a Map (or PseudoMap) that matches the keys to +// the Yallist.Node object. +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() + } + + // 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') + + this[MAX] = mL || Infinity + trim(this) + } + get max () { + return this[MAX] + } + + set allowStale (allowStale) { + this[ALLOW_STALE] = !!allowStale + } + get allowStale () { + return this[ALLOW_STALE] + } + + set maxAge (mA) { + if (typeof mA !== 'number') + throw new TypeError('maxAge must be a non-negative number') + + this[MAX_AGE] = mA + trim(this) + } + get maxAge () { + return this[MAX_AGE] + } + + // 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(hit => { + hit.length = this[LENGTH_CALCULATOR](hit.value, hit.key) + this[LENGTH] += hit.length + }) + } + trim(this) + } + get lengthCalculator () { return this[LENGTH_CALCULATOR] } + + 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 + } + } + + 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 + } + } + + keys () { + return this[LRU_LIST].toArray().map(k => k.key) + } + + 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 + } + + const node = this[CACHE].get(key) + const 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) + trim(this) + return true + } + + const 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 + } + + this[LENGTH] += hit.length + this[LRU_LIST].unshift(hit) + this[CACHE].set(key, this[LRU_LIST].head) + trim(this) + return true + } + + has (key) { + if (!this[CACHE].has(key)) return false + const hit = this[CACHE].get(key).value + return !isStale(this, hit) + } + + get (key) { + return get(this, key, true) + } + + peek (key) { + return get(this, key, false) + } + + pop () { + const node = this[LRU_LIST].tail + if (!node) + return null + + del(this, node) + return node.value + } + + del (key) { + del(this, this[CACHE].get(key)) + } + + load (arr) { + // reset the cache + this.reset() + + 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)) + } +} + +const get = (self, key, doUse) => { + const node = self[CACHE].get(key) + if (node) { + const hit = node.value + if (isStale(self, hit)) { + del(self, node) + 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) + } + } + return hit.value + } +} + +const isStale = (self, hit) => { + if (!hit || (!hit.maxAge && !self[MAX_AGE])) + return false + + const diff = Date.now() - hit.now + return hit.maxAge ? diff > hit.maxAge + : self[MAX_AGE] && (diff > self[MAX_AGE]) +} + +const trim = self => { + if (self[LENGTH] > self[MAX]) { + 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. + const prev = walker.prev + del(self, walker) + walker = prev + } + } +} + +const del = (self, node) => { + if (node) { + 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) + } +} + +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 diff --git a/deps/npm/node_modules/cacache/node_modules/lru-cache/package.json b/deps/npm/node_modules/cacache/node_modules/lru-cache/package.json new file mode 100644 index 0000000000..1d41a07afb --- /dev/null +++ b/deps/npm/node_modules/cacache/node_modules/lru-cache/package.json @@ -0,0 +1,67 @@ +{ + "_from": "lru-cache@^5.1.1", + "_id": "lru-cache@5.1.1", + "_inBundle": false, + "_integrity": "sha512-KpNARQA3Iwv+jTA0utUVVbrh+Jlrr1Fv0e56GGzAFOXN7dk/FviaDW8LHmK52DlcH4WP2n6gI8vN1aesBFgo9w==", + "_location": "/cacache/lru-cache", + "_phantomChildren": {}, + "_requested": { + "type": "range", + "registry": true, + "raw": "lru-cache@^5.1.1", + "name": "lru-cache", + "escapedName": "lru-cache", + "rawSpec": "^5.1.1", + "saveSpec": null, + "fetchSpec": "^5.1.1" + }, + "_requiredBy": [ + "/cacache" + ], + "_resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-5.1.1.tgz", + "_shasum": "1da27e6710271947695daf6848e847f01d84b920", + "_spec": "lru-cache@^5.1.1", + "_where": "/Users/aeschright/code/cli/node_modules/cacache", + "author": { + "name": "Isaac Z. Schlueter", + "email": "i@izs.me" + }, + "bugs": { + "url": "https://github.com/isaacs/node-lru-cache/issues" + }, + "bundleDependencies": false, + "dependencies": { + "yallist": "^3.0.2" + }, + "deprecated": false, + "description": "A cache object that deletes the least-recently-used items.", + "devDependencies": { + "benchmark": "^2.1.4", + "tap": "^12.1.0" + }, + "files": [ + "index.js" + ], + "homepage": "https://github.com/isaacs/node-lru-cache#readme", + "keywords": [ + "mru", + "lru", + "cache" + ], + "license": "ISC", + "main": "index.js", + "name": "lru-cache", + "repository": { + "type": "git", + "url": "git://github.com/isaacs/node-lru-cache.git" + }, + "scripts": { + "coveragerport": "tap --coverage-report=html", + "postpublish": "git push origin --all; git push origin --tags", + "postversion": "npm publish", + "preversion": "npm test", + "snap": "TAP_SNAPSHOT=1 tap test/*.js -J", + "test": "tap test/*.js --100 -J" + }, + "version": "5.1.1" +} |