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lalBi94
2023-03-05 13:23:23 +01:00
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14
node_modules/spdy-transport/.travis.yml generated vendored Normal file
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sudo: false
language: node_js
node_js:
- "6"
- "8"
- "10"
- "stable"
script:
- npm run lint
- npm test
- npm run coverage

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node_modules/spdy-transport/README.md generated vendored Normal file
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# spdy-transport
[![Build Status](https://travis-ci.org/spdy-http2/spdy-transport.svg?branch=master)](http://travis-ci.org/spdy-http2/spdy-transport)
[![NPM version](https://badge.fury.io/js/spdy-transport.svg)](http://badge.fury.io/js/spdy-transport)
[![dependencies Status](https://david-dm.org/spdy-http2/spdy-transport/status.svg?style=flat-square)](https://david-dm.org/spdy-http2/spdy-transport)
[![Standard - JavaScript Style Guide](https://img.shields.io/badge/code_style-standard-brightgreen.svg?style=flat-square)](http://standardjs.com/)
[![Waffle](https://img.shields.io/badge/track-waffle-blue.svg?style=flat-square)](https://waffle.io/spdy-http2/node-spdy)
> SPDY/HTTP2 generic transport implementation.
## Usage
```javascript
var transport = require('spdy-transport');
// NOTE: socket is some stream or net.Socket instance, may be an argument
// of `net.createServer`'s connection handler.
var server = transport.connection.create(socket, {
protocol: 'http2',
isServer: true
});
server.on('stream', function(stream) {
console.log(stream.method, stream.path, stream.headers);
stream.respond(200, {
header: 'value'
});
stream.on('readable', function() {
var chunk = stream.read();
if (!chunk)
return;
console.log(chunk);
});
stream.on('end', function() {
console.log('end');
});
// And other node.js Stream APIs
// ...
});
```
## LICENSE
This software is licensed under the MIT License.
Copyright Fedor Indutny, 2015.
Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to permit
persons to whom the Software is furnished to do so, subject to the
following conditions:
The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
USE OR OTHER DEALINGS IN THE SOFTWARE.
[0]: http://json.org/
[1]: http://github.com/indutny/bud-backend
[2]: https://github.com/nodejs/io.js
[3]: https://github.com/libuv/libuv
[4]: http://openssl.org/

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node_modules/spdy-transport/lib/spdy-transport.js generated vendored Normal file
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'use strict'
var transport = exports
// Exports utils
transport.utils = require('./spdy-transport/utils')
// Export parser&framer
transport.protocol = {}
transport.protocol.base = require('./spdy-transport/protocol/base')
transport.protocol.spdy = require('./spdy-transport/protocol/spdy')
transport.protocol.http2 = require('./spdy-transport/protocol/http2')
// Window
transport.Window = require('./spdy-transport/window')
// Priority Tree
transport.Priority = require('./spdy-transport/priority')
// Export Connection and Stream
transport.Stream = require('./spdy-transport/stream').Stream
transport.Connection = require('./spdy-transport/connection').Connection
// Just for `transport.connection.create()`
transport.connection = transport.Connection

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node_modules/spdy-transport/lib/spdy-transport/priority.js generated vendored Normal file
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'use strict'
var transport = require('../spdy-transport')
var utils = transport.utils
var assert = require('assert')
var debug = require('debug')('spdy:priority')
function PriorityNode (tree, options) {
this.tree = tree
this.id = options.id
this.parent = options.parent
this.weight = options.weight
// To be calculated in `addChild`
this.priorityFrom = 0
this.priorityTo = 1
this.priority = 1
this.children = {
list: [],
weight: 0
}
if (this.parent !== null) {
this.parent.addChild(this)
}
}
function compareChildren (a, b) {
return a.weight === b.weight ? a.id - b.id : a.weight - b.weight
}
PriorityNode.prototype.toJSON = function toJSON () {
return {
parent: this.parent,
weight: this.weight,
exclusive: this.exclusive
}
}
PriorityNode.prototype.getPriority = function getPriority () {
return this.priority
}
PriorityNode.prototype.getPriorityRange = function getPriorityRange () {
return { from: this.priorityFrom, to: this.priorityTo }
}
PriorityNode.prototype.addChild = function addChild (child) {
child.parent = this
utils.binaryInsert(this.children.list, child, compareChildren)
this.children.weight += child.weight
this._updatePriority(this.priorityFrom, this.priorityTo)
}
PriorityNode.prototype.remove = function remove () {
assert(this.parent, 'Can\'t remove root node')
this.parent.removeChild(this)
this.tree._removeNode(this)
// Move all children to the parent
for (var i = 0; i < this.children.list.length; i++) {
this.parent.addChild(this.children.list[i])
}
}
PriorityNode.prototype.removeChild = function removeChild (child) {
this.children.weight -= child.weight
var index = utils.binarySearch(this.children.list, child, compareChildren)
if (index !== -1 && this.children.list.length >= index) {
this.children.list.splice(index, 1)
}
}
PriorityNode.prototype.removeChildren = function removeChildren () {
var children = this.children.list
this.children.list = []
this.children.weight = 0
return children
}
PriorityNode.prototype._updatePriority = function _updatePriority (from, to) {
this.priority = to - from
this.priorityFrom = from
this.priorityTo = to
var weight = 0
for (var i = 0; i < this.children.list.length; i++) {
var node = this.children.list[i]
var nextWeight = weight + node.weight
node._updatePriority(
from + this.priority * (weight / this.children.weight),
from + this.priority * (nextWeight / this.children.weight)
)
weight = nextWeight
}
}
function PriorityTree (options) {
this.map = {}
this.list = []
this.defaultWeight = options.defaultWeight || 16
this.count = 0
this.maxCount = options.maxCount
// Root
this.root = this.add({
id: 0,
parent: null,
weight: 1
})
}
module.exports = PriorityTree
PriorityTree.create = function create (options) {
return new PriorityTree(options)
}
PriorityTree.prototype.add = function add (options) {
if (options.id === options.parent) {
return this.addDefault(options.id)
}
var parent = options.parent === null ? null : this.map[options.parent]
if (parent === undefined) {
return this.addDefault(options.id)
}
debug('add node=%d parent=%d weight=%d exclusive=%d',
options.id,
options.parent === null ? -1 : options.parent,
options.weight || this.defaultWeight,
options.exclusive ? 1 : 0)
var children
if (options.exclusive) {
children = parent.removeChildren()
}
var node = new PriorityNode(this, {
id: options.id,
parent: parent,
weight: options.weight || this.defaultWeight
})
this.map[options.id] = node
if (options.exclusive) {
for (var i = 0; i < children.length; i++) {
node.addChild(children[i])
}
}
this.count++
if (this.count > this.maxCount) {
debug('hit maximum remove id=%d', this.list[0].id)
this.list.shift().remove()
}
// Root node is not subject to removal
if (node.parent !== null) {
this.list.push(node)
}
return node
}
// Only for testing, should use `node`'s methods
PriorityTree.prototype.get = function get (id) {
return this.map[id]
}
PriorityTree.prototype.addDefault = function addDefault (id) {
debug('creating default node')
return this.add({ id: id, parent: 0, weight: this.defaultWeight })
}
PriorityTree.prototype._removeNode = function _removeNode (node) {
delete this.map[node.id]
var index = utils.binarySearch(this.list, node, compareChildren)
this.list.splice(index, 1)
this.count--
}

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exports.DEFAULT_METHOD = 'GET'
exports.DEFAULT_HOST = 'localhost'
exports.MAX_PRIORITY_STREAMS = 100
exports.DEFAULT_MAX_CHUNK = 8 * 1024

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node_modules/spdy-transport/lib/spdy-transport/protocol/base/framer.js generated vendored Normal file
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'use strict'
var util = require('util')
var transport = require('../../../spdy-transport')
var base = require('./')
var Scheduler = base.Scheduler
function Framer (options) {
Scheduler.call(this)
this.version = null
this.compress = null
this.window = options.window
this.timeout = options.timeout
// Wait for `enablePush`
this.pushEnabled = null
}
util.inherits(Framer, Scheduler)
module.exports = Framer
Framer.prototype.setVersion = function setVersion (version) {
this.version = version
this.emit('version')
}
Framer.prototype.setCompression = function setCompresion (pair) {
this.compress = new transport.utils.LockStream(pair.compress)
}
Framer.prototype.enablePush = function enablePush (enable) {
this.pushEnabled = enable
this.emit('_pushEnabled')
}
Framer.prototype._checkPush = function _checkPush (callback) {
if (this.pushEnabled === null) {
this.once('_pushEnabled', function () {
this._checkPush(callback)
})
return
}
var err = null
if (!this.pushEnabled) {
err = new Error('PUSH_PROMISE disabled by other side')
}
process.nextTick(function () {
return callback(err)
})
}
Framer.prototype._resetTimeout = function _resetTimeout () {
if (this.timeout) {
this.timeout.reset()
}
}

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'use strict'
exports.utils = require('./utils')
exports.constants = require('./constants')
exports.Scheduler = require('./scheduler')
exports.Parser = require('./parser')
exports.Framer = require('./framer')

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node_modules/spdy-transport/lib/spdy-transport/protocol/base/parser.js generated vendored Normal file
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'use strict'
var transport = require('../../../spdy-transport')
var util = require('util')
var utils = require('./').utils
var OffsetBuffer = require('obuf')
var Transform = require('readable-stream').Transform
function Parser (options) {
Transform.call(this, {
readableObjectMode: true
})
this.buffer = new OffsetBuffer()
this.partial = false
this.waiting = 0
this.window = options.window
this.version = null
this.decompress = null
this.dead = false
}
module.exports = Parser
util.inherits(Parser, Transform)
Parser.prototype.error = utils.error
Parser.prototype.kill = function kill () {
this.dead = true
}
Parser.prototype._transform = function transform (data, encoding, cb) {
if (!this.dead) { this.buffer.push(data) }
this._consume(cb)
}
Parser.prototype._consume = function _consume (cb) {
var self = this
function next (err, frame) {
if (err) {
return cb(err)
}
if (Array.isArray(frame)) {
for (var i = 0; i < frame.length; i++) {
self.push(frame[i])
}
} else if (frame) {
self.push(frame)
}
// Consume more packets
if (!sync) {
return self._consume(cb)
}
process.nextTick(function () {
self._consume(cb)
})
}
if (this.dead) {
return cb()
}
if (this.buffer.size < this.waiting) {
// No data at all
if (this.buffer.size === 0) {
return cb()
}
// Partial DATA frame or something that we can process partially
if (this.partial) {
var partial = this.buffer.clone(this.buffer.size)
this.buffer.skip(partial.size)
this.waiting -= partial.size
this.executePartial(partial, next)
return
}
// We shall not do anything until we get all expected data
return cb()
}
var sync = true
var content = this.buffer.clone(this.waiting)
this.buffer.skip(this.waiting)
this.execute(content, next)
sync = false
}
Parser.prototype.setVersion = function setVersion (version) {
this.version = version
this.emit('version', version)
}
Parser.prototype.setCompression = function setCompresion (pair) {
this.decompress = new transport.utils.LockStream(pair.decompress)
}

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node_modules/spdy-transport/lib/spdy-transport/protocol/base/scheduler.js generated vendored Normal file
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'use strict'
var transport = require('../../../spdy-transport')
var utils = transport.utils
var assert = require('assert')
var util = require('util')
var debug = require('debug')('spdy:scheduler')
var Readable = require('readable-stream').Readable
/*
* We create following structure in `pending`:
* [ [ id = 0 ], [ id = 1 ], [ id = 2 ], [ id = 0 ] ]
* chunks chunks chunks chunks
* chunks chunks
* chunks
*
* Then on the `.tick()` pass we pick one chunks from each item and remove the
* item if it is empty:
*
* [ [ id = 0 ], [ id = 2 ] ]
* chunks chunks
* chunks
*
* Writing out: chunks for 0, chunks for 1, chunks for 2, chunks for 0
*
* This way data is interleaved between the different streams.
*/
function Scheduler (options) {
Readable.call(this)
// Pretty big window by default
this.window = 0.25
if (options && options.window) { this.window = options.window }
this.sync = []
this.list = []
this.count = 0
this.pendingTick = false
}
util.inherits(Scheduler, Readable)
module.exports = Scheduler
// Just for testing, really
Scheduler.create = function create (options) {
return new Scheduler(options)
}
function insertCompare (a, b) {
return a.priority === b.priority
? a.stream - b.stream
: b.priority - a.priority
}
Scheduler.prototype.schedule = function schedule (data) {
var priority = data.priority
var stream = data.stream
var chunks = data.chunks
// Synchronous frames should not be interleaved
if (priority === false) {
debug('queue sync', chunks)
this.sync.push(data)
this.count += chunks.length
this._read()
return
}
debug('queue async priority=%d stream=%d', priority, stream, chunks)
var item = new SchedulerItem(stream, priority)
var index = utils.binaryLookup(this.list, item, insertCompare)
// Push new item
if (index >= this.list.length || insertCompare(this.list[index], item) !== 0) {
this.list.splice(index, 0, item)
} else { // Coalesce
item = this.list[index]
}
item.push(data)
this.count += chunks.length
this._read()
}
Scheduler.prototype._read = function _read () {
if (this.count === 0) {
return
}
if (this.pendingTick) {
return
}
this.pendingTick = true
var self = this
process.nextTick(function () {
self.pendingTick = false
self.tick()
})
}
Scheduler.prototype.tick = function tick () {
// No luck for async frames
if (!this.tickSync()) { return false }
return this.tickAsync()
}
Scheduler.prototype.tickSync = function tickSync () {
// Empty sync queue first
var sync = this.sync
var res = true
this.sync = []
for (var i = 0; i < sync.length; i++) {
var item = sync[i]
debug('tick sync pending=%d', this.count, item.chunks)
for (var j = 0; j < item.chunks.length; j++) {
this.count--
// TODO: handle stream backoff properly
try {
res = this.push(item.chunks[j])
} catch (err) {
this.emit('error', err)
return false
}
}
debug('after tick sync pending=%d', this.count)
// TODO(indutny): figure out the way to invoke callback on actual write
if (item.callback) {
item.callback(null)
}
}
return res
}
Scheduler.prototype.tickAsync = function tickAsync () {
var res = true
var list = this.list
if (list.length === 0) {
return res
}
var startPriority = list[0].priority
for (var index = 0; list.length > 0; index++) {
// Loop index
index %= list.length
if (startPriority - list[index].priority > this.window) { index = 0 }
debug('tick async index=%d start=%d', index, startPriority)
var current = list[index]
var item = current.shift()
if (current.isEmpty()) {
list.splice(index, 1)
if (index === 0 && list.length > 0) {
startPriority = list[0].priority
}
index--
}
debug('tick async pending=%d', this.count, item.chunks)
for (var i = 0; i < item.chunks.length; i++) {
this.count--
// TODO: handle stream backoff properly
try {
res = this.push(item.chunks[i])
} catch (err) {
this.emit('error', err)
return false
}
}
debug('after tick pending=%d', this.count)
// TODO(indutny): figure out the way to invoke callback on actual write
if (item.callback) {
item.callback(null)
}
if (!res) { break }
}
return res
}
Scheduler.prototype.dump = function dump () {
this.tickSync()
// Write everything out
while (!this.tickAsync()) {
// Intentional no-op
}
assert.strictEqual(this.count, 0)
}
function SchedulerItem (stream, priority) {
this.stream = stream
this.priority = priority
this.queue = []
}
SchedulerItem.prototype.push = function push (chunks) {
this.queue.push(chunks)
}
SchedulerItem.prototype.shift = function shift () {
return this.queue.shift()
}
SchedulerItem.prototype.isEmpty = function isEmpty () {
return this.queue.length === 0
}

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'use strict'
var utils = exports
var util = require('util')
function ProtocolError (code, message) {
this.code = code
this.message = message
}
util.inherits(ProtocolError, Error)
utils.ProtocolError = ProtocolError
utils.error = function error (code, message) {
return new ProtocolError(code, message)
}
utils.reverse = function reverse (object) {
var result = []
Object.keys(object).forEach(function (key) {
result[object[key] | 0] = key
})
return result
}
// weight [1, 36] <=> priority [0, 7]
// This way weight=16 is preserved and has priority=3
utils.weightToPriority = function weightToPriority (weight) {
return ((Math.min(35, (weight - 1)) / 35) * 7) | 0
}
utils.priorityToWeight = function priorityToWeight (priority) {
return (((priority / 7) * 35) | 0) + 1
}
// Copy-Paste from node
exports.addHeaderLine = function addHeaderLine (field, value, dest) {
field = field.toLowerCase()
if (/^:/.test(field)) {
dest[field] = value
return
}
switch (field) {
// Array headers:
case 'set-cookie':
if (dest[field] !== undefined) {
dest[field].push(value)
} else {
dest[field] = [ value ]
}
break
/* eslint-disable max-len */
// list is taken from:
/* eslint-enable max-len */
case 'content-type':
case 'content-length':
case 'user-agent':
case 'referer':
case 'host':
case 'authorization':
case 'proxy-authorization':
case 'if-modified-since':
case 'if-unmodified-since':
case 'from':
case 'location':
case 'max-forwards':
// drop duplicates
if (dest[field] === undefined) {
dest[field] = value
}
break
case 'cookie':
// make semicolon-separated list
if (dest[field] !== undefined) {
dest[field] += '; ' + value
} else {
dest[field] = value
}
break
default:
// make comma-separated list
if (dest[field] !== undefined) {
dest[field] += ', ' + value
} else {
dest[field] = value
}
}
}

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node_modules/spdy-transport/lib/spdy-transport/protocol/http2/constants.js generated vendored Normal file
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'use strict'
var transport = require('../../../spdy-transport')
var base = transport.protocol.base
exports.PREFACE_SIZE = 24
exports.PREFACE = 'PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n'
exports.PREFACE_BUFFER = Buffer.from(exports.PREFACE)
exports.PING_OPAQUE_SIZE = 8
exports.FRAME_HEADER_SIZE = 9
exports.INITIAL_MAX_FRAME_SIZE = 16384
exports.ABSOLUTE_MAX_FRAME_SIZE = 16777215
exports.HEADER_TABLE_SIZE = 4096
exports.DEFAULT_MAX_HEADER_LIST_SIZE = 80 * 1024 // as in http_parser
exports.MAX_INITIAL_WINDOW_SIZE = 2147483647
exports.DEFAULT_WEIGHT = 16
exports.MAX_CONCURRENT_STREAMS = Infinity
exports.frameType = {
DATA: 0,
HEADERS: 1,
PRIORITY: 2,
RST_STREAM: 3,
SETTINGS: 4,
PUSH_PROMISE: 5,
PING: 6,
GOAWAY: 7,
WINDOW_UPDATE: 8,
CONTINUATION: 9,
// Custom
X_FORWARDED_FOR: 0xde
}
exports.flags = {
ACK: 0x01, // SETTINGS-only
END_STREAM: 0x01,
END_HEADERS: 0x04,
PADDED: 0x08,
PRIORITY: 0x20
}
exports.settings = {
SETTINGS_HEADER_TABLE_SIZE: 0x01,
SETTINGS_ENABLE_PUSH: 0x02,
SETTINGS_MAX_CONCURRENT_STREAMS: 0x03,
SETTINGS_INITIAL_WINDOW_SIZE: 0x04,
SETTINGS_MAX_FRAME_SIZE: 0x05,
SETTINGS_MAX_HEADER_LIST_SIZE: 0x06
}
exports.settingsIndex = [
null,
'header_table_size',
'enable_push',
'max_concurrent_streams',
'initial_window_size',
'max_frame_size',
'max_header_list_size'
]
exports.error = {
OK: 0,
NO_ERROR: 0,
PROTOCOL_ERROR: 1,
INTERNAL_ERROR: 2,
FLOW_CONTROL_ERROR: 3,
SETTINGS_TIMEOUT: 4,
STREAM_CLOSED: 5,
INVALID_STREAM: 5,
FRAME_SIZE_ERROR: 6,
REFUSED_STREAM: 7,
CANCEL: 8,
COMPRESSION_ERROR: 9,
CONNECT_ERROR: 10,
ENHANCE_YOUR_CALM: 11,
INADEQUATE_SECURITY: 12,
HTTP_1_1_REQUIRED: 13
}
exports.errorByCode = base.utils.reverse(exports.error)
exports.DEFAULT_WINDOW = 64 * 1024 - 1
exports.goaway = exports.error
exports.goawayByCode = Object.assign({}, exports.errorByCode)
exports.goawayByCode[0] = 'OK'

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'use strict'
var constants = require('./').constants
var hpack = require('hpack.js')
function Pool () {
}
module.exports = Pool
Pool.create = function create () {
return new Pool()
}
Pool.prototype.get = function get (version) {
var options = {
table: {
maxSize: constants.HEADER_TABLE_SIZE
}
}
var compress = hpack.compressor.create(options)
var decompress = hpack.decompressor.create(options)
return {
version: version,
compress: compress,
decompress: decompress
}
}
Pool.prototype.put = function put () {
}

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'use strict'
exports.name = 'h2'
exports.constants = require('./constants')
exports.parser = require('./parser')
exports.framer = require('./framer')
exports.compressionPool = require('./hpack-pool')

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node_modules/spdy-transport/lib/spdy-transport/protocol/spdy/constants.js generated vendored Normal file
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'use strict'
var transport = require('../../../spdy-transport')
var base = transport.protocol.base
exports.FRAME_HEADER_SIZE = 8
exports.PING_OPAQUE_SIZE = 4
exports.MAX_CONCURRENT_STREAMS = Infinity
exports.DEFAULT_MAX_HEADER_LIST_SIZE = Infinity
exports.DEFAULT_WEIGHT = 16
exports.frameType = {
SYN_STREAM: 1,
SYN_REPLY: 2,
RST_STREAM: 3,
SETTINGS: 4,
PING: 6,
GOAWAY: 7,
HEADERS: 8,
WINDOW_UPDATE: 9,
// Custom
X_FORWARDED_FOR: 0xf000
}
exports.flags = {
FLAG_FIN: 0x01,
FLAG_COMPRESSED: 0x02,
FLAG_UNIDIRECTIONAL: 0x02
}
exports.error = {
PROTOCOL_ERROR: 1,
INVALID_STREAM: 2,
REFUSED_STREAM: 3,
UNSUPPORTED_VERSION: 4,
CANCEL: 5,
INTERNAL_ERROR: 6,
FLOW_CONTROL_ERROR: 7,
STREAM_IN_USE: 8,
// STREAM_ALREADY_CLOSED: 9
STREAM_CLOSED: 9,
INVALID_CREDENTIALS: 10,
FRAME_TOO_LARGE: 11
}
exports.errorByCode = base.utils.reverse(exports.error)
exports.settings = {
FLAG_SETTINGS_PERSIST_VALUE: 1,
FLAG_SETTINGS_PERSISTED: 2,
SETTINGS_UPLOAD_BANDWIDTH: 1,
SETTINGS_DOWNLOAD_BANDWIDTH: 2,
SETTINGS_ROUND_TRIP_TIME: 3,
SETTINGS_MAX_CONCURRENT_STREAMS: 4,
SETTINGS_CURRENT_CWND: 5,
SETTINGS_DOWNLOAD_RETRANS_RATE: 6,
SETTINGS_INITIAL_WINDOW_SIZE: 7,
SETTINGS_CLIENT_CERTIFICATE_VECTOR_SIZE: 8
}
exports.settingsIndex = [
null,
'upload_bandwidth',
'download_bandwidth',
'round_trip_time',
'max_concurrent_streams',
'current_cwnd',
'download_retrans_rate',
'initial_window_size',
'client_certificate_vector_size'
]
exports.DEFAULT_WINDOW = 64 * 1024
exports.MAX_INITIAL_WINDOW_SIZE = 2147483647
exports.goaway = {
OK: 0,
PROTOCOL_ERROR: 1,
INTERNAL_ERROR: 2
}
exports.goawayByCode = base.utils.reverse(exports.goaway)
exports.statusReason = {
100: 'Continue',
101: 'Switching Protocols',
102: 'Processing', // RFC 2518, obsoleted by RFC 4918
200: 'OK',
201: 'Created',
202: 'Accepted',
203: 'Non-Authoritative Information',
204: 'No Content',
205: 'Reset Content',
206: 'Partial Content',
207: 'Multi-Status', // RFC 4918
300: 'Multiple Choices',
301: 'Moved Permanently',
302: 'Moved Temporarily',
303: 'See Other',
304: 'Not Modified',
305: 'Use Proxy',
307: 'Temporary Redirect',
308: 'Permanent Redirect', // RFC 7238
400: 'Bad Request',
401: 'Unauthorized',
402: 'Payment Required',
403: 'Forbidden',
404: 'Not Found',
405: 'Method Not Allowed',
406: 'Not Acceptable',
407: 'Proxy Authentication Required',
408: 'Request Time-out',
409: 'Conflict',
410: 'Gone',
411: 'Length Required',
412: 'Precondition Failed',
413: 'Request Entity Too Large',
414: 'Request-URI Too Large',
415: 'Unsupported Media Type',
416: 'Requested Range Not Satisfiable',
417: 'Expectation Failed',
418: 'I\'m a teapot', // RFC 2324
422: 'Unprocessable Entity', // RFC 4918
423: 'Locked', // RFC 4918
424: 'Failed Dependency', // RFC 4918
425: 'Unordered Collection', // RFC 4918
426: 'Upgrade Required', // RFC 2817
428: 'Precondition Required', // RFC 6585
429: 'Too Many Requests', // RFC 6585
431: 'Request Header Fields Too Large', // RFC 6585
500: 'Internal Server Error',
501: 'Not Implemented',
502: 'Bad Gateway',
503: 'Service Unavailable',
504: 'Gateway Time-out',
505: 'HTTP Version Not Supported',
506: 'Variant Also Negotiates', // RFC 2295
507: 'Insufficient Storage', // RFC 4918
509: 'Bandwidth Limit Exceeded',
510: 'Not Extended', // RFC 2774
511: 'Network Authentication Required' // RFC 6585
}

203
node_modules/spdy-transport/lib/spdy-transport/protocol/spdy/dictionary.js generated vendored Normal file
View File

@@ -0,0 +1,203 @@
'use strict'
var dictionary = {}
module.exports = dictionary
dictionary[2] = Buffer.from([
'optionsgetheadpostputdeletetraceacceptaccept-charsetaccept-encodingaccept-',
'languageauthorizationexpectfromhostif-modified-sinceif-matchif-none-matchi',
'f-rangeif-unmodifiedsincemax-forwardsproxy-authorizationrangerefererteuser',
'-agent10010120020120220320420520630030130230330430530630740040140240340440',
'5406407408409410411412413414415416417500501502503504505accept-rangesageeta',
'glocationproxy-authenticatepublicretry-afterservervarywarningwww-authentic',
'ateallowcontent-basecontent-encodingcache-controlconnectiondatetrailertran',
'sfer-encodingupgradeviawarningcontent-languagecontent-lengthcontent-locati',
'oncontent-md5content-rangecontent-typeetagexpireslast-modifiedset-cookieMo',
'ndayTuesdayWednesdayThursdayFridaySaturdaySundayJanFebMarAprMayJunJulAugSe',
'pOctNovDecchunkedtext/htmlimage/pngimage/jpgimage/gifapplication/xmlapplic',
'ation/xhtmltext/plainpublicmax-agecharset=iso-8859-1utf-8gzipdeflateHTTP/1',
'.1statusversionurl\x00'
].join(''))
dictionary[3] = Buffer.from([
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0x6d, 0x6c, 0x2c, 0x61, 0x70, 0x70, 0x6c, 0x69, // ml.appli
0x63, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x2f, 0x78, // cation.x
0x68, 0x74, 0x6d, 0x6c, 0x2b, 0x78, 0x6d, 0x6c, // html.xml
0x2c, 0x74, 0x65, 0x78, 0x74, 0x2f, 0x70, 0x6c, // .text.pl
0x61, 0x69, 0x6e, 0x2c, 0x74, 0x65, 0x78, 0x74, // ain.text
0x2f, 0x6a, 0x61, 0x76, 0x61, 0x73, 0x63, 0x72, // .javascr
0x69, 0x70, 0x74, 0x2c, 0x70, 0x75, 0x62, 0x6c, // ipt.publ
0x69, 0x63, 0x70, 0x72, 0x69, 0x76, 0x61, 0x74, // icprivat
0x65, 0x6d, 0x61, 0x78, 0x2d, 0x61, 0x67, 0x65, // emax-age
0x3d, 0x67, 0x7a, 0x69, 0x70, 0x2c, 0x64, 0x65, // .gzip.de
0x66, 0x6c, 0x61, 0x74, 0x65, 0x2c, 0x73, 0x64, // flate.sd
0x63, 0x68, 0x63, 0x68, 0x61, 0x72, 0x73, 0x65, // chcharse
0x74, 0x3d, 0x75, 0x74, 0x66, 0x2d, 0x38, 0x63, // t.utf-8c
0x68, 0x61, 0x72, 0x73, 0x65, 0x74, 0x3d, 0x69, // harset.i
0x73, 0x6f, 0x2d, 0x38, 0x38, 0x35, 0x39, 0x2d, // so-8859-
0x31, 0x2c, 0x75, 0x74, 0x66, 0x2d, 0x2c, 0x2a, // 1.utf-..
0x2c, 0x65, 0x6e, 0x71, 0x3d, 0x30, 0x2e // .enq.0.
])
dictionary[3.1] = dictionary[3]

519
node_modules/spdy-transport/lib/spdy-transport/protocol/spdy/framer.js generated vendored Normal file
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9
node_modules/spdy-transport/lib/spdy-transport/protocol/spdy/index.js generated vendored Normal file
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@@ -0,0 +1,9 @@
'use strict'
exports.name = 'spdy'
exports.dictionary = require('./dictionary')
exports.constants = require('./constants')
exports.parser = require('./parser')
exports.framer = require('./framer')
exports.compressionPool = require('./zlib-pool')

485
node_modules/spdy-transport/lib/spdy-transport/protocol/spdy/parser.js generated vendored Normal file
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'use strict'
var parser = exports
var transport = require('../../../spdy-transport')
var base = transport.protocol.base
var utils = base.utils
var constants = require('./constants')
var assert = require('assert')
var util = require('util')
var OffsetBuffer = require('obuf')
function Parser (options) {
base.Parser.call(this, options)
this.isServer = options.isServer
this.waiting = constants.FRAME_HEADER_SIZE
this.state = 'frame-head'
this.pendingHeader = null
}
util.inherits(Parser, base.Parser)
parser.create = function create (options) {
return new Parser(options)
}
Parser.prototype.setMaxFrameSize = function setMaxFrameSize (size) {
// http2-only
}
Parser.prototype.setMaxHeaderListSize = function setMaxHeaderListSize (size) {
// http2-only
}
// Only for testing
Parser.prototype.skipPreface = function skipPreface () {
}
Parser.prototype.execute = function execute (buffer, callback) {
if (this.state === 'frame-head') { return this.onFrameHead(buffer, callback) }
assert(this.state === 'frame-body' && this.pendingHeader !== null)
var self = this
var header = this.pendingHeader
this.pendingHeader = null
this.onFrameBody(header, buffer, function (err, frame) {
if (err) {
return callback(err)
}
self.state = 'frame-head'
self.waiting = constants.FRAME_HEADER_SIZE
self.partial = false
callback(null, frame)
})
}
Parser.prototype.executePartial = function executePartial (buffer, callback) {
var header = this.pendingHeader
if (this.window) {
this.window.recv.update(-buffer.size)
}
// DATA frame
callback(null, {
type: 'DATA',
id: header.id,
// Partial DATA can't be FIN
fin: false,
data: buffer.take(buffer.size)
})
}
Parser.prototype.onFrameHead = function onFrameHead (buffer, callback) {
var header = {
control: (buffer.peekUInt8() & 0x80) === 0x80,
version: null,
type: null,
id: null,
flags: null,
length: null
}
if (header.control) {
header.version = buffer.readUInt16BE() & 0x7fff
header.type = buffer.readUInt16BE()
} else {
header.id = buffer.readUInt32BE(0) & 0x7fffffff
}
header.flags = buffer.readUInt8()
header.length = buffer.readUInt24BE()
if (this.version === null && header.control) {
// TODO(indutny): do ProtocolError here and in the rest of errors
if (header.version !== 2 && header.version !== 3) {
return callback(new Error('Unsupported SPDY version: ' + header.version))
}
this.setVersion(header.version)
}
this.state = 'frame-body'
this.waiting = header.length
this.pendingHeader = header
this.partial = !header.control
callback(null, null)
}
Parser.prototype.onFrameBody = function onFrameBody (header, buffer, callback) {
// Data frame
if (!header.control) {
// Count received bytes
if (this.window) {
this.window.recv.update(-buffer.size)
}
// No support for compressed DATA
if ((header.flags & constants.flags.FLAG_COMPRESSED) !== 0) {
return callback(new Error('DATA compression not supported'))
}
if (header.id === 0) {
return callback(this.error(constants.error.PROTOCOL_ERROR,
'Invalid stream id for DATA'))
}
return callback(null, {
type: 'DATA',
id: header.id,
fin: (header.flags & constants.flags.FLAG_FIN) !== 0,
data: buffer.take(buffer.size)
})
}
if (header.type === 0x01 || header.type === 0x02) { // SYN_STREAM or SYN_REPLY
this.onSynHeadFrame(header.type, header.flags, buffer, callback)
} else if (header.type === 0x03) { // RST_STREAM
this.onRSTFrame(buffer, callback)
} else if (header.type === 0x04) { // SETTINGS
this.onSettingsFrame(buffer, callback)
} else if (header.type === 0x05) {
callback(null, { type: 'NOOP' })
} else if (header.type === 0x06) { // PING
this.onPingFrame(buffer, callback)
} else if (header.type === 0x07) { // GOAWAY
this.onGoawayFrame(buffer, callback)
} else if (header.type === 0x08) { // HEADERS
this.onHeaderFrames(buffer, callback)
} else if (header.type === 0x09) { // WINDOW_UPDATE
this.onWindowUpdateFrame(buffer, callback)
} else if (header.type === 0xf000) { // X-FORWARDED
this.onXForwardedFrame(buffer, callback)
} else {
callback(null, { type: 'unknown: ' + header.type })
}
}
Parser.prototype._filterHeader = function _filterHeader (headers, name) {
var res = {}
var keys = Object.keys(headers)
for (var i = 0; i < keys.length; i++) {
var key = keys[i]
if (key !== name) {
res[key] = headers[key]
}
}
return res
}
Parser.prototype.onSynHeadFrame = function onSynHeadFrame (type,
flags,
body,
callback) {
var self = this
var stream = type === 0x01
var offset = stream ? 10 : this.version === 2 ? 6 : 4
if (!body.has(offset)) {
return callback(new Error('SynHead OOB'))
}
var head = body.clone(offset)
body.skip(offset)
this.parseKVs(body, function (err, headers) {
if (err) {
return callback(err)
}
if (stream &&
(!headers[':method'] || !headers[':path'])) {
return callback(new Error('Missing `:method` and/or `:path` header'))
}
var id = head.readUInt32BE() & 0x7fffffff
if (id === 0) {
return callback(self.error(constants.error.PROTOCOL_ERROR,
'Invalid stream id for HEADERS'))
}
var associated = stream ? head.readUInt32BE() & 0x7fffffff : 0
var priority = stream
? head.readUInt8() >> 5
: utils.weightToPriority(constants.DEFAULT_WEIGHT)
var fin = (flags & constants.flags.FLAG_FIN) !== 0
var unidir = (flags & constants.flags.FLAG_UNIDIRECTIONAL) !== 0
var path = headers[':path']
var isPush = stream && associated !== 0
var weight = utils.priorityToWeight(priority)
var priorityInfo = {
weight: weight,
exclusive: false,
parent: 0
}
if (!isPush) {
callback(null, {
type: 'HEADERS',
id: id,
priority: priorityInfo,
fin: fin,
writable: !unidir,
headers: headers,
path: path
})
return
}
if (stream && !headers[':status']) {
return callback(new Error('Missing `:status` header'))
}
var filteredHeaders = self._filterHeader(headers, ':status')
callback(null, [ {
type: 'PUSH_PROMISE',
id: associated,
fin: false,
promisedId: id,
headers: filteredHeaders,
path: path
}, {
type: 'HEADERS',
id: id,
fin: fin,
priority: priorityInfo,
writable: true,
path: undefined,
headers: {
':status': headers[':status']
}
}])
})
}
Parser.prototype.onHeaderFrames = function onHeaderFrames (body, callback) {
var offset = this.version === 2 ? 6 : 4
if (!body.has(offset)) {
return callback(new Error('HEADERS OOB'))
}
var streamId = body.readUInt32BE() & 0x7fffffff
if (this.version === 2) { body.skip(2) }
this.parseKVs(body, function (err, headers) {
if (err) { return callback(err) }
callback(null, {
type: 'HEADERS',
priority: {
parent: 0,
exclusive: false,
weight: constants.DEFAULT_WEIGHT
},
id: streamId,
fin: false,
writable: true,
path: undefined,
headers: headers
})
})
}
Parser.prototype.parseKVs = function parseKVs (buffer, callback) {
var self = this
this.decompress.write(buffer.toChunks(), function (err, chunks) {
if (err) {
return callback(err)
}
var buffer = new OffsetBuffer()
for (var i = 0; i < chunks.length; i++) {
buffer.push(chunks[i])
}
var size = self.version === 2 ? 2 : 4
if (!buffer.has(size)) { return callback(new Error('KV OOB')) }
var count = self.version === 2
? buffer.readUInt16BE()
: buffer.readUInt32BE()
var headers = {}
function readString () {
if (!buffer.has(size)) { return null }
var len = self.version === 2
? buffer.readUInt16BE()
: buffer.readUInt32BE()
if (!buffer.has(len)) { return null }
var value = buffer.take(len)
return value.toString()
}
while (count > 0) {
var key = readString()
var value = readString()
if (key === null || value === null) {
return callback(new Error('Headers OOB'))
}
if (self.version < 3) {
var isInternal = /^(method|version|url|host|scheme|status)$/.test(key)
if (key === 'url') {
key = 'path'
}
if (isInternal) {
key = ':' + key
}
}
// Compatibility with HTTP2
if (key === ':status') {
value = value.split(/ /g, 2)[0]
}
count--
if (key === ':host') {
key = ':authority'
}
// Skip version, not present in HTTP2
if (key === ':version') {
continue
}
value = value.split(/\0/g)
for (var j = 0; j < value.length; j++) {
utils.addHeaderLine(key, value[j], headers)
}
}
callback(null, headers)
})
}
Parser.prototype.onRSTFrame = function onRSTFrame (body, callback) {
if (!body.has(8)) { return callback(new Error('RST OOB')) }
var frame = {
type: 'RST',
id: body.readUInt32BE() & 0x7fffffff,
code: constants.errorByCode[body.readUInt32BE()]
}
if (frame.id === 0) {
return callback(this.error(constants.error.PROTOCOL_ERROR,
'Invalid stream id for RST'))
}
if (body.size !== 0) {
frame.extra = body.take(body.size)
}
callback(null, frame)
}
Parser.prototype.onSettingsFrame = function onSettingsFrame (body, callback) {
if (!body.has(4)) {
return callback(new Error('SETTINGS OOB'))
}
var settings = {}
var number = body.readUInt32BE()
var idMap = {
1: 'upload_bandwidth',
2: 'download_bandwidth',
3: 'round_trip_time',
4: 'max_concurrent_streams',
5: 'current_cwnd',
6: 'download_retrans_rate',
7: 'initial_window_size',
8: 'client_certificate_vector_size'
}
if (!body.has(number * 8)) {
return callback(new Error('SETTINGS OOB#2'))
}
for (var i = 0; i < number; i++) {
var id = this.version === 2
? body.readUInt32LE()
: body.readUInt32BE()
var flags = (id >> 24) & 0xff
id = id & 0xffffff
// Skip persisted settings
if (flags & 0x2) { continue }
var name = idMap[id]
settings[name] = body.readUInt32BE()
}
callback(null, {
type: 'SETTINGS',
settings: settings
})
}
Parser.prototype.onPingFrame = function onPingFrame (body, callback) {
if (!body.has(4)) {
return callback(new Error('PING OOB'))
}
var isServer = this.isServer
var opaque = body.clone(body.size).take(body.size)
var id = body.readUInt32BE()
var ack = isServer ? (id % 2 === 0) : (id % 2 === 1)
callback(null, { type: 'PING', opaque: opaque, ack: ack })
}
Parser.prototype.onGoawayFrame = function onGoawayFrame (body, callback) {
if (!body.has(8)) {
return callback(new Error('GOAWAY OOB'))
}
callback(null, {
type: 'GOAWAY',
lastId: body.readUInt32BE() & 0x7fffffff,
code: constants.goawayByCode[body.readUInt32BE()]
})
}
Parser.prototype.onWindowUpdateFrame = function onWindowUpdateFrame (body,
callback) {
if (!body.has(8)) {
return callback(new Error('WINDOW_UPDATE OOB'))
}
callback(null, {
type: 'WINDOW_UPDATE',
id: body.readUInt32BE() & 0x7fffffff,
delta: body.readInt32BE()
})
}
Parser.prototype.onXForwardedFrame = function onXForwardedFrame (body,
callback) {
if (!body.has(4)) {
return callback(new Error('X_FORWARDED OOB'))
}
var len = body.readUInt32BE()
if (!body.has(len)) { return callback(new Error('X_FORWARDED host length OOB')) }
callback(null, {
type: 'X_FORWARDED_FOR',
host: body.take(len).toString()
})
}

65
node_modules/spdy-transport/lib/spdy-transport/protocol/spdy/zlib-pool.js generated vendored Normal file
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'use strict'
var zlibpool = exports
var zlib = require('zlib')
var transport = require('../../../spdy-transport')
// TODO(indutny): think about it, why has it always been Z_SYNC_FLUSH here.
// It should be possible to manually flush stuff after the write instead
function createDeflate (version, compression) {
var deflate = zlib.createDeflate({
dictionary: transport.protocol.spdy.dictionary[version],
flush: zlib.Z_SYNC_FLUSH,
windowBits: 11,
level: compression ? zlib.Z_DEFAULT_COMPRESSION : zlib.Z_NO_COMPRESSION
})
// For node.js v0.8
deflate._flush = zlib.Z_SYNC_FLUSH
return deflate
}
function createInflate (version) {
var inflate = zlib.createInflate({
dictionary: transport.protocol.spdy.dictionary[version],
flush: zlib.Z_SYNC_FLUSH
})
// For node.js v0.8
inflate._flush = zlib.Z_SYNC_FLUSH
return inflate
}
function Pool (compression) {
this.compression = compression
this.pool = {
2: [],
3: [],
3.1: []
}
}
zlibpool.create = function create (compression) {
return new Pool(compression)
}
Pool.prototype.get = function get (version) {
if (this.pool[version].length > 0) {
return this.pool[version].pop()
} else {
var id = version
return {
version: version,
compress: createDeflate(id, this.compression),
decompress: createInflate(id)
}
}
}
Pool.prototype.put = function put (pair) {
this.pool[pair.version].push(pair)
}

710
node_modules/spdy-transport/lib/spdy-transport/stream.js generated vendored Normal file
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196
node_modules/spdy-transport/lib/spdy-transport/utils.js generated vendored Normal file
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'use strict'
var util = require('util')
var isNode = require('detect-node')
// Node.js 0.8, 0.10 and 0.12 support
Object.assign = (process.versions.modules >= 46 || !isNode)
? Object.assign // eslint-disable-next-line
: util._extend
function QueueItem () {
this.prev = null
this.next = null
}
exports.QueueItem = QueueItem
function Queue () {
QueueItem.call(this)
this.prev = this
this.next = this
}
util.inherits(Queue, QueueItem)
exports.Queue = Queue
Queue.prototype.insertTail = function insertTail (item) {
item.prev = this.prev
item.next = this
item.prev.next = item
item.next.prev = item
}
Queue.prototype.remove = function remove (item) {
var next = item.next
var prev = item.prev
item.next = item
item.prev = item
next.prev = prev
prev.next = next
}
Queue.prototype.head = function head () {
return this.next
}
Queue.prototype.tail = function tail () {
return this.prev
}
Queue.prototype.isEmpty = function isEmpty () {
return this.next === this
}
Queue.prototype.isRoot = function isRoot (item) {
return this === item
}
function LockStream (stream) {
this.locked = false
this.queue = []
this.stream = stream
}
exports.LockStream = LockStream
LockStream.prototype.write = function write (chunks, callback) {
var self = this
// Do not let it interleave
if (this.locked) {
this.queue.push(function () {
return self.write(chunks, callback)
})
return
}
this.locked = true
function done (err, chunks) {
self.stream.removeListener('error', done)
self.locked = false
if (self.queue.length > 0) { self.queue.shift()() }
callback(err, chunks)
}
this.stream.on('error', done)
// Accumulate all output data
var output = []
function onData (chunk) {
output.push(chunk)
}
this.stream.on('data', onData)
function next (err) {
self.stream.removeListener('data', onData)
if (err) {
return done(err)
}
done(null, output)
}
for (var i = 0; i < chunks.length - 1; i++) { this.stream.write(chunks[i]) }
if (chunks.length > 0) {
this.stream.write(chunks[i], next)
} else { process.nextTick(next) }
if (this.stream.execute) {
this.stream.execute(function (err) {
if (err) { return done(err) }
})
}
}
// Just finds the place in array to insert
function binaryLookup (list, item, compare) {
var start = 0
var end = list.length
while (start < end) {
var pos = (start + end) >> 1
var cmp = compare(item, list[pos])
if (cmp === 0) {
start = pos
end = pos
break
} else if (cmp < 0) {
end = pos
} else {
start = pos + 1
}
}
return start
}
exports.binaryLookup = binaryLookup
function binaryInsert (list, item, compare) {
var index = binaryLookup(list, item, compare)
list.splice(index, 0, item)
}
exports.binaryInsert = binaryInsert
function binarySearch (list, item, compare) {
var index = binaryLookup(list, item, compare)
if (index >= list.length) {
return -1
}
if (compare(item, list[index]) === 0) {
return index
}
return -1
}
exports.binarySearch = binarySearch
function Timeout (object) {
this.delay = 0
this.timer = null
this.object = object
}
exports.Timeout = Timeout
Timeout.prototype.set = function set (delay, callback) {
this.delay = delay
this.reset()
if (!callback) { return }
if (this.delay === 0) {
this.object.removeListener('timeout', callback)
} else {
this.object.once('timeout', callback)
}
}
Timeout.prototype.reset = function reset () {
if (this.timer !== null) {
clearTimeout(this.timer)
this.timer = null
}
if (this.delay === 0) { return }
var self = this
this.timer = setTimeout(function () {
self.timer = null
self.object.emit('timeout')
}, this.delay)
}

174
node_modules/spdy-transport/lib/spdy-transport/window.js generated vendored Normal file
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'use strict'
var util = require('util')
var EventEmitter = require('events').EventEmitter
var debug = {
server: require('debug')('spdy:window:server'),
client: require('debug')('spdy:window:client')
}
function Side (window, name, options) {
EventEmitter.call(this)
this.name = name
this.window = window
this.current = options.size
this.max = options.size
this.limit = options.max
this.lowWaterMark = options.lowWaterMark === undefined
? this.max / 2
: options.lowWaterMark
this._refilling = false
this._refillQueue = []
}
util.inherits(Side, EventEmitter)
Side.prototype.setMax = function setMax (max) {
this.window.debug('id=%d side=%s setMax=%d',
this.window.id,
this.name,
max)
this.max = max
this.lowWaterMark = this.max / 2
}
Side.prototype.updateMax = function updateMax (max) {
var delta = max - this.max
this.window.debug('id=%d side=%s updateMax=%d delta=%d',
this.window.id,
this.name,
max,
delta)
this.max = max
this.lowWaterMark = max / 2
this.update(delta)
}
Side.prototype.setLowWaterMark = function setLowWaterMark (lwm) {
this.lowWaterMark = lwm
}
Side.prototype.update = function update (size, callback) {
// Not enough space for the update, wait for refill
if (size <= 0 && callback && this.isEmpty()) {
this.window.debug('id=%d side=%s wait for refill=%d [%d/%d]',
this.window.id,
this.name,
-size,
this.current,
this.max)
this._refillQueue.push({
size: size,
callback: callback
})
return
}
this.current += size
if (this.current > this.limit) {
this.emit('overflow')
return
}
this.window.debug('id=%d side=%s update by=%d [%d/%d]',
this.window.id,
this.name,
size,
this.current,
this.max)
// Time to send WINDOW_UPDATE
if (size < 0 && this.isDraining()) {
this.window.debug('id=%d side=%s drained', this.window.id, this.name)
this.emit('drain')
}
// Time to write
if (size > 0 && this.current > 0 && this.current <= size) {
this.window.debug('id=%d side=%s full', this.window.id, this.name)
this.emit('full')
}
this._processRefillQueue()
if (callback) { process.nextTick(callback) }
}
Side.prototype.getCurrent = function getCurrent () {
return this.current
}
Side.prototype.getMax = function getMax () {
return this.max
}
Side.prototype.getDelta = function getDelta () {
return this.max - this.current
}
Side.prototype.isDraining = function isDraining () {
return this.current <= this.lowWaterMark
}
Side.prototype.isEmpty = function isEmpty () {
return this.current <= 0
}
// Private
Side.prototype._processRefillQueue = function _processRefillQueue () {
// Prevent recursion
if (this._refilling) {
return
}
this._refilling = true
while (this._refillQueue.length > 0) {
var item = this._refillQueue[0]
if (this.isEmpty()) {
break
}
this.window.debug('id=%d side=%s refilled for size=%d',
this.window.id,
this.name,
-item.size)
this._refillQueue.shift()
this.update(item.size, item.callback)
}
this._refilling = false
}
function Window (options) {
this.id = options.id
this.isServer = options.isServer
this.debug = this.isServer ? debug.server : debug.client
this.recv = new Side(this, 'recv', options.recv)
this.send = new Side(this, 'send', options.send)
}
module.exports = Window
Window.prototype.clone = function clone (id) {
return new Window({
id: id,
isServer: this.isServer,
recv: {
size: this.recv.max,
max: this.recv.limit,
lowWaterMark: this.recv.lowWaterMark
},
send: {
size: this.send.max,
max: this.send.limit,
lowWaterMark: this.send.lowWaterMark
}
})
}

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3.1.0 / 2017-09-26
==================
* Add `DEBUG_HIDE_DATE` env var (#486)
* Remove ReDoS regexp in %o formatter (#504)
* Remove "component" from package.json
* Remove `component.json`
* Ignore package-lock.json
* Examples: fix colors printout
* Fix: browser detection
* Fix: spelling mistake (#496, @EdwardBetts)
3.0.1 / 2017-08-24
==================
* Fix: Disable colors in Edge and Internet Explorer (#489)
3.0.0 / 2017-08-08
==================
* Breaking: Remove DEBUG_FD (#406)
* Breaking: Use `Date#toISOString()` instead to `Date#toUTCString()` when output is not a TTY (#418)
* Breaking: Make millisecond timer namespace specific and allow 'always enabled' output (#408)
* Addition: document `enabled` flag (#465)
* Addition: add 256 colors mode (#481)
* Addition: `enabled()` updates existing debug instances, add `destroy()` function (#440)
* Update: component: update "ms" to v2.0.0
* Update: separate the Node and Browser tests in Travis-CI
* Update: refactor Readme, fixed documentation, added "Namespace Colors" section, redid screenshots
* Update: separate Node.js and web browser examples for organization
* Update: update "browserify" to v14.4.0
* Fix: fix Readme typo (#473)
2.6.9 / 2017-09-22
==================
* remove ReDoS regexp in %o formatter (#504)
2.6.8 / 2017-05-18
==================
* Fix: Check for undefined on browser globals (#462, @marbemac)
2.6.7 / 2017-05-16
==================
* Fix: Update ms to 2.0.0 to fix regular expression denial of service vulnerability (#458, @hubdotcom)
* Fix: Inline extend function in node implementation (#452, @dougwilson)
* Docs: Fix typo (#455, @msasad)
2.6.5 / 2017-04-27
==================
* Fix: null reference check on window.documentElement.style.WebkitAppearance (#447, @thebigredgeek)
* Misc: clean up browser reference checks (#447, @thebigredgeek)
* Misc: add npm-debug.log to .gitignore (@thebigredgeek)
2.6.4 / 2017-04-20
==================
* Fix: bug that would occur if process.env.DEBUG is a non-string value. (#444, @LucianBuzzo)
* Chore: ignore bower.json in npm installations. (#437, @joaovieira)
* Misc: update "ms" to v0.7.3 (@tootallnate)
2.6.3 / 2017-03-13
==================
* Fix: Electron reference to `process.env.DEBUG` (#431, @paulcbetts)
* Docs: Changelog fix (@thebigredgeek)
2.6.2 / 2017-03-10
==================
* Fix: DEBUG_MAX_ARRAY_LENGTH (#420, @slavaGanzin)
* Docs: Add backers and sponsors from Open Collective (#422, @piamancini)
* Docs: Add Slackin invite badge (@tootallnate)
2.6.1 / 2017-02-10
==================
* Fix: Module's `export default` syntax fix for IE8 `Expected identifier` error
* Fix: Whitelist DEBUG_FD for values 1 and 2 only (#415, @pi0)
* Fix: IE8 "Expected identifier" error (#414, @vgoma)
* Fix: Namespaces would not disable once enabled (#409, @musikov)
2.6.0 / 2016-12-28
==================
* Fix: added better null pointer checks for browser useColors (@thebigredgeek)
* Improvement: removed explicit `window.debug` export (#404, @tootallnate)
* Improvement: deprecated `DEBUG_FD` environment variable (#405, @tootallnate)
2.5.2 / 2016-12-25
==================
* Fix: reference error on window within webworkers (#393, @KlausTrainer)
* Docs: fixed README typo (#391, @lurch)
* Docs: added notice about v3 api discussion (@thebigredgeek)
2.5.1 / 2016-12-20
==================
* Fix: babel-core compatibility
2.5.0 / 2016-12-20
==================
* Fix: wrong reference in bower file (@thebigredgeek)
* Fix: webworker compatibility (@thebigredgeek)
* Fix: output formatting issue (#388, @kribblo)
* Fix: babel-loader compatibility (#383, @escwald)
* Misc: removed built asset from repo and publications (@thebigredgeek)
* Misc: moved source files to /src (#378, @yamikuronue)
* Test: added karma integration and replaced babel with browserify for browser tests (#378, @yamikuronue)
* Test: coveralls integration (#378, @yamikuronue)
* Docs: simplified language in the opening paragraph (#373, @yamikuronue)
2.4.5 / 2016-12-17
==================
* Fix: `navigator` undefined in Rhino (#376, @jochenberger)
* Fix: custom log function (#379, @hsiliev)
* Improvement: bit of cleanup + linting fixes (@thebigredgeek)
* Improvement: rm non-maintainted `dist/` dir (#375, @freewil)
* Docs: simplified language in the opening paragraph. (#373, @yamikuronue)
2.4.4 / 2016-12-14
==================
* Fix: work around debug being loaded in preload scripts for electron (#368, @paulcbetts)
2.4.3 / 2016-12-14
==================
* Fix: navigation.userAgent error for react native (#364, @escwald)
2.4.2 / 2016-12-14
==================
* Fix: browser colors (#367, @tootallnate)
* Misc: travis ci integration (@thebigredgeek)
* Misc: added linting and testing boilerplate with sanity check (@thebigredgeek)
2.4.1 / 2016-12-13
==================
* Fix: typo that broke the package (#356)
2.4.0 / 2016-12-13
==================
* Fix: bower.json references unbuilt src entry point (#342, @justmatt)
* Fix: revert "handle regex special characters" (@tootallnate)
* Feature: configurable util.inspect()`options for NodeJS (#327, @tootallnate)
* Feature: %O`(big O) pretty-prints objects (#322, @tootallnate)
* Improvement: allow colors in workers (#335, @botverse)
* Improvement: use same color for same namespace. (#338, @lchenay)
2.3.3 / 2016-11-09
==================
* Fix: Catch `JSON.stringify()` errors (#195, Jovan Alleyne)
* Fix: Returning `localStorage` saved values (#331, Levi Thomason)
* Improvement: Don't create an empty object when no `process` (Nathan Rajlich)
2.3.2 / 2016-11-09
==================
* Fix: be super-safe in index.js as well (@TooTallNate)
* Fix: should check whether process exists (Tom Newby)
2.3.1 / 2016-11-09
==================
* Fix: Added electron compatibility (#324, @paulcbetts)
* Improvement: Added performance optimizations (@tootallnate)
* Readme: Corrected PowerShell environment variable example (#252, @gimre)
* Misc: Removed yarn lock file from source control (#321, @fengmk2)
2.3.0 / 2016-11-07
==================
* Fix: Consistent placement of ms diff at end of output (#215, @gorangajic)
* Fix: Escaping of regex special characters in namespace strings (#250, @zacronos)
* Fix: Fixed bug causing crash on react-native (#282, @vkarpov15)
* Feature: Enabled ES6+ compatible import via default export (#212 @bucaran)
* Feature: Added %O formatter to reflect Chrome's console.log capability (#279, @oncletom)
* Package: Update "ms" to 0.7.2 (#315, @DevSide)
* Package: removed superfluous version property from bower.json (#207 @kkirsche)
* Readme: fix USE_COLORS to DEBUG_COLORS
* Readme: Doc fixes for format string sugar (#269, @mlucool)
* Readme: Updated docs for DEBUG_FD and DEBUG_COLORS environment variables (#232, @mattlyons0)
* Readme: doc fixes for PowerShell (#271 #243, @exoticknight @unreadable)
* Readme: better docs for browser support (#224, @matthewmueller)
* Tooling: Added yarn integration for development (#317, @thebigredgeek)
* Misc: Renamed History.md to CHANGELOG.md (@thebigredgeek)
* Misc: Added license file (#226 #274, @CantemoInternal @sdaitzman)
* Misc: Updated contributors (@thebigredgeek)
2.2.0 / 2015-05-09
==================
* package: update "ms" to v0.7.1 (#202, @dougwilson)
* README: add logging to file example (#193, @DanielOchoa)
* README: fixed a typo (#191, @amir-s)
* browser: expose `storage` (#190, @stephenmathieson)
* Makefile: add a `distclean` target (#189, @stephenmathieson)
2.1.3 / 2015-03-13
==================
* Updated stdout/stderr example (#186)
* Updated example/stdout.js to match debug current behaviour
* Renamed example/stderr.js to stdout.js
* Update Readme.md (#184)
* replace high intensity foreground color for bold (#182, #183)
2.1.2 / 2015-03-01
==================
* dist: recompile
* update "ms" to v0.7.0
* package: update "browserify" to v9.0.3
* component: fix "ms.js" repo location
* changed bower package name
* updated documentation about using debug in a browser
* fix: security error on safari (#167, #168, @yields)
2.1.1 / 2014-12-29
==================
* browser: use `typeof` to check for `console` existence
* browser: check for `console.log` truthiness (fix IE 8/9)
* browser: add support for Chrome apps
* Readme: added Windows usage remarks
* Add `bower.json` to properly support bower install
2.1.0 / 2014-10-15
==================
* node: implement `DEBUG_FD` env variable support
* package: update "browserify" to v6.1.0
* package: add "license" field to package.json (#135, @panuhorsmalahti)
2.0.0 / 2014-09-01
==================
* package: update "browserify" to v5.11.0
* node: use stderr rather than stdout for logging (#29, @stephenmathieson)
1.0.4 / 2014-07-15
==================
* dist: recompile
* example: remove `console.info()` log usage
* example: add "Content-Type" UTF-8 header to browser example
* browser: place %c marker after the space character
* browser: reset the "content" color via `color: inherit`
* browser: add colors support for Firefox >= v31
* debug: prefer an instance `log()` function over the global one (#119)
* Readme: update documentation about styled console logs for FF v31 (#116, @wryk)
1.0.3 / 2014-07-09
==================
* Add support for multiple wildcards in namespaces (#122, @seegno)
* browser: fix lint
1.0.2 / 2014-06-10
==================
* browser: update color palette (#113, @gscottolson)
* common: make console logging function configurable (#108, @timoxley)
* node: fix %o colors on old node <= 0.8.x
* Makefile: find node path using shell/which (#109, @timoxley)
1.0.1 / 2014-06-06
==================
* browser: use `removeItem()` to clear localStorage
* browser, node: don't set DEBUG if namespaces is undefined (#107, @leedm777)
* package: add "contributors" section
* node: fix comment typo
* README: list authors
1.0.0 / 2014-06-04
==================
* make ms diff be global, not be scope
* debug: ignore empty strings in enable()
* node: make DEBUG_COLORS able to disable coloring
* *: export the `colors` array
* npmignore: don't publish the `dist` dir
* Makefile: refactor to use browserify
* package: add "browserify" as a dev dependency
* Readme: add Web Inspector Colors section
* node: reset terminal color for the debug content
* node: map "%o" to `util.inspect()`
* browser: map "%j" to `JSON.stringify()`
* debug: add custom "formatters"
* debug: use "ms" module for humanizing the diff
* Readme: add "bash" syntax highlighting
* browser: add Firebug color support
* browser: add colors for WebKit browsers
* node: apply log to `console`
* rewrite: abstract common logic for Node & browsers
* add .jshintrc file
0.8.1 / 2014-04-14
==================
* package: re-add the "component" section
0.8.0 / 2014-03-30
==================
* add `enable()` method for nodejs. Closes #27
* change from stderr to stdout
* remove unnecessary index.js file
0.7.4 / 2013-11-13
==================
* remove "browserify" key from package.json (fixes something in browserify)
0.7.3 / 2013-10-30
==================
* fix: catch localStorage security error when cookies are blocked (Chrome)
* add debug(err) support. Closes #46
* add .browser prop to package.json. Closes #42
0.7.2 / 2013-02-06
==================
* fix package.json
* fix: Mobile Safari (private mode) is broken with debug
* fix: Use unicode to send escape character to shell instead of octal to work with strict mode javascript
0.7.1 / 2013-02-05
==================
* add repository URL to package.json
* add DEBUG_COLORED to force colored output
* add browserify support
* fix component. Closes #24
0.7.0 / 2012-05-04
==================
* Added .component to package.json
* Added debug.component.js build
0.6.0 / 2012-03-16
==================
* Added support for "-" prefix in DEBUG [Vinay Pulim]
* Added `.enabled` flag to the node version [TooTallNate]
0.5.0 / 2012-02-02
==================
* Added: humanize diffs. Closes #8
* Added `debug.disable()` to the CS variant
* Removed padding. Closes #10
* Fixed: persist client-side variant again. Closes #9
0.4.0 / 2012-02-01
==================
* Added browser variant support for older browsers [TooTallNate]
* Added `debug.enable('project:*')` to browser variant [TooTallNate]
* Added padding to diff (moved it to the right)
0.3.0 / 2012-01-26
==================
* Added millisecond diff when isatty, otherwise UTC string
0.2.0 / 2012-01-22
==================
* Added wildcard support
0.1.0 / 2011-12-02
==================
* Added: remove colors unless stderr isatty [TooTallNate]
0.0.1 / 2010-01-03
==================
* Initial release

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(The MIT License)
Copyright (c) 2014 TJ Holowaychuk <tj@vision-media.ca>
Permission is hereby granted, free of charge, to any person obtaining a copy of this software
and associated documentation files (the 'Software'), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,
and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial
portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

455
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# debug
[![Build Status](https://travis-ci.org/visionmedia/debug.svg?branch=master)](https://travis-ci.org/visionmedia/debug) [![Coverage Status](https://coveralls.io/repos/github/visionmedia/debug/badge.svg?branch=master)](https://coveralls.io/github/visionmedia/debug?branch=master) [![Slack](https://visionmedia-community-slackin.now.sh/badge.svg)](https://visionmedia-community-slackin.now.sh/) [![OpenCollective](https://opencollective.com/debug/backers/badge.svg)](#backers)
[![OpenCollective](https://opencollective.com/debug/sponsors/badge.svg)](#sponsors)
<img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png">
A tiny JavaScript debugging utility modelled after Node.js core's debugging
technique. Works in Node.js and web browsers.
## Installation
```bash
$ npm install debug
```
## Usage
`debug` exposes a function; simply pass this function the name of your module, and it will return a decorated version of `console.error` for you to pass debug statements to. This will allow you to toggle the debug output for different parts of your module as well as the module as a whole.
Example [_app.js_](./examples/node/app.js):
```js
var debug = require('debug')('http')
, http = require('http')
, name = 'My App';
// fake app
debug('booting %o', name);
http.createServer(function(req, res){
debug(req.method + ' ' + req.url);
res.end('hello\n');
}).listen(3000, function(){
debug('listening');
});
// fake worker of some kind
require('./worker');
```
Example [_worker.js_](./examples/node/worker.js):
```js
var a = require('debug')('worker:a')
, b = require('debug')('worker:b');
function work() {
a('doing lots of uninteresting work');
setTimeout(work, Math.random() * 1000);
}
work();
function workb() {
b('doing some work');
setTimeout(workb, Math.random() * 2000);
}
workb();
```
The `DEBUG` environment variable is then used to enable these based on space or
comma-delimited names.
Here are some examples:
<img width="647" alt="screen shot 2017-08-08 at 12 53 04 pm" src="https://user-images.githubusercontent.com/71256/29091703-a6302cdc-7c38-11e7-8304-7c0b3bc600cd.png">
<img width="647" alt="screen shot 2017-08-08 at 12 53 38 pm" src="https://user-images.githubusercontent.com/71256/29091700-a62a6888-7c38-11e7-800b-db911291ca2b.png">
<img width="647" alt="screen shot 2017-08-08 at 12 53 25 pm" src="https://user-images.githubusercontent.com/71256/29091701-a62ea114-7c38-11e7-826a-2692bedca740.png">
#### Windows command prompt notes
##### CMD
On Windows the environment variable is set using the `set` command.
```cmd
set DEBUG=*,-not_this
```
Example:
```cmd
set DEBUG=* & node app.js
```
##### PowerShell (VS Code default)
PowerShell uses different syntax to set environment variables.
```cmd
$env:DEBUG = "*,-not_this"
```
Example:
```cmd
$env:DEBUG='app';node app.js
```
Then, run the program to be debugged as usual.
npm script example:
```js
"windowsDebug": "@powershell -Command $env:DEBUG='*';node app.js",
```
## Namespace Colors
Every debug instance has a color generated for it based on its namespace name.
This helps when visually parsing the debug output to identify which debug instance
a debug line belongs to.
#### Node.js
In Node.js, colors are enabled when stderr is a TTY. You also _should_ install
the [`supports-color`](https://npmjs.org/supports-color) module alongside debug,
otherwise debug will only use a small handful of basic colors.
<img width="521" src="https://user-images.githubusercontent.com/71256/29092181-47f6a9e6-7c3a-11e7-9a14-1928d8a711cd.png">
#### Web Browser
Colors are also enabled on "Web Inspectors" that understand the `%c` formatting
option. These are WebKit web inspectors, Firefox ([since version
31](https://hacks.mozilla.org/2014/05/editable-box-model-multiple-selection-sublime-text-keys-much-more-firefox-developer-tools-episode-31/))
and the Firebug plugin for Firefox (any version).
<img width="524" src="https://user-images.githubusercontent.com/71256/29092033-b65f9f2e-7c39-11e7-8e32-f6f0d8e865c1.png">
## Millisecond diff
When actively developing an application it can be useful to see when the time spent between one `debug()` call and the next. Suppose for example you invoke `debug()` before requesting a resource, and after as well, the "+NNNms" will show you how much time was spent between calls.
<img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png">
When stdout is not a TTY, `Date#toISOString()` is used, making it more useful for logging the debug information as shown below:
<img width="647" src="https://user-images.githubusercontent.com/71256/29091956-6bd78372-7c39-11e7-8c55-c948396d6edd.png">
## Conventions
If you're using this in one or more of your libraries, you _should_ use the name of your library so that developers may toggle debugging as desired without guessing names. If you have more than one debuggers you _should_ prefix them with your library name and use ":" to separate features. For example "bodyParser" from Connect would then be "connect:bodyParser". If you append a "*" to the end of your name, it will always be enabled regardless of the setting of the DEBUG environment variable. You can then use it for normal output as well as debug output.
## Wildcards
The `*` character may be used as a wildcard. Suppose for example your library has
debuggers named "connect:bodyParser", "connect:compress", "connect:session",
instead of listing all three with
`DEBUG=connect:bodyParser,connect:compress,connect:session`, you may simply do
`DEBUG=connect:*`, or to run everything using this module simply use `DEBUG=*`.
You can also exclude specific debuggers by prefixing them with a "-" character.
For example, `DEBUG=*,-connect:*` would include all debuggers except those
starting with "connect:".
## Environment Variables
When running through Node.js, you can set a few environment variables that will
change the behavior of the debug logging:
| Name | Purpose |
|-----------|-------------------------------------------------|
| `DEBUG` | Enables/disables specific debugging namespaces. |
| `DEBUG_HIDE_DATE` | Hide date from debug output (non-TTY). |
| `DEBUG_COLORS`| Whether or not to use colors in the debug output. |
| `DEBUG_DEPTH` | Object inspection depth. |
| `DEBUG_SHOW_HIDDEN` | Shows hidden properties on inspected objects. |
__Note:__ The environment variables beginning with `DEBUG_` end up being
converted into an Options object that gets used with `%o`/`%O` formatters.
See the Node.js documentation for
[`util.inspect()`](https://nodejs.org/api/util.html#util_util_inspect_object_options)
for the complete list.
## Formatters
Debug uses [printf-style](https://wikipedia.org/wiki/Printf_format_string) formatting.
Below are the officially supported formatters:
| Formatter | Representation |
|-----------|----------------|
| `%O` | Pretty-print an Object on multiple lines. |
| `%o` | Pretty-print an Object all on a single line. |
| `%s` | String. |
| `%d` | Number (both integer and float). |
| `%j` | JSON. Replaced with the string '[Circular]' if the argument contains circular references. |
| `%%` | Single percent sign ('%'). This does not consume an argument. |
### Custom formatters
You can add custom formatters by extending the `debug.formatters` object.
For example, if you wanted to add support for rendering a Buffer as hex with
`%h`, you could do something like:
```js
const createDebug = require('debug')
createDebug.formatters.h = (v) => {
return v.toString('hex')
}
// …elsewhere
const debug = createDebug('foo')
debug('this is hex: %h', new Buffer('hello world'))
// foo this is hex: 68656c6c6f20776f726c6421 +0ms
```
## Browser Support
You can build a browser-ready script using [browserify](https://github.com/substack/node-browserify),
or just use the [browserify-as-a-service](https://wzrd.in/) [build](https://wzrd.in/standalone/debug@latest),
if you don't want to build it yourself.
Debug's enable state is currently persisted by `localStorage`.
Consider the situation shown below where you have `worker:a` and `worker:b`,
and wish to debug both. You can enable this using `localStorage.debug`:
```js
localStorage.debug = 'worker:*'
```
And then refresh the page.
```js
a = debug('worker:a');
b = debug('worker:b');
setInterval(function(){
a('doing some work');
}, 1000);
setInterval(function(){
b('doing some work');
}, 1200);
```
## Output streams
By default `debug` will log to stderr, however this can be configured per-namespace by overriding the `log` method:
Example [_stdout.js_](./examples/node/stdout.js):
```js
var debug = require('debug');
var error = debug('app:error');
// by default stderr is used
error('goes to stderr!');
var log = debug('app:log');
// set this namespace to log via console.log
log.log = console.log.bind(console); // don't forget to bind to console!
log('goes to stdout');
error('still goes to stderr!');
// set all output to go via console.info
// overrides all per-namespace log settings
debug.log = console.info.bind(console);
error('now goes to stdout via console.info');
log('still goes to stdout, but via console.info now');
```
## Extend
You can simply extend debugger
```js
const log = require('debug')('auth');
//creates new debug instance with extended namespace
const logSign = log.extend('sign');
const logLogin = log.extend('login');
log('hello'); // auth hello
logSign('hello'); //auth:sign hello
logLogin('hello'); //auth:login hello
```
## Set dynamically
You can also enable debug dynamically by calling the `enable()` method :
```js
let debug = require('debug');
console.log(1, debug.enabled('test'));
debug.enable('test');
console.log(2, debug.enabled('test'));
debug.disable();
console.log(3, debug.enabled('test'));
```
print :
```
1 false
2 true
3 false
```
Usage :
`enable(namespaces)`
`namespaces` can include modes separated by a colon and wildcards.
Note that calling `enable()` completely overrides previously set DEBUG variable :
```
$ DEBUG=foo node -e 'var dbg = require("debug"); dbg.enable("bar"); console.log(dbg.enabled("foo"))'
=> false
```
`disable()`
Will disable all namespaces. The functions returns the namespaces currently
enabled (and skipped). This can be useful if you want to disable debugging
temporarily without knowing what was enabled to begin with.
For example:
```js
let debug = require('debug');
debug.enable('foo:*,-foo:bar');
let namespaces = debug.disable();
debug.enable(namespaces);
```
Note: There is no guarantee that the string will be identical to the initial
enable string, but semantically they will be identical.
## Checking whether a debug target is enabled
After you've created a debug instance, you can determine whether or not it is
enabled by checking the `enabled` property:
```javascript
const debug = require('debug')('http');
if (debug.enabled) {
// do stuff...
}
```
You can also manually toggle this property to force the debug instance to be
enabled or disabled.
## Authors
- TJ Holowaychuk
- Nathan Rajlich
- Andrew Rhyne
## Backers
Support us with a monthly donation and help us continue our activities. [[Become a backer](https://opencollective.com/debug#backer)]
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## Sponsors
Become a sponsor and get your logo on our README on Github with a link to your site. [[Become a sponsor](https://opencollective.com/debug#sponsor)]
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## License
(The MIT License)
Copyright (c) 2014-2017 TJ Holowaychuk &lt;tj@vision-media.ca&gt;
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
'Software'), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

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{
"name": "debug",
"version": "4.1.1",
"repository": {
"type": "git",
"url": "git://github.com/visionmedia/debug.git"
},
"description": "small debugging utility",
"keywords": [
"debug",
"log",
"debugger"
],
"files": [
"src",
"dist/debug.js",
"LICENSE",
"README.md"
],
"author": "TJ Holowaychuk <tj@vision-media.ca>",
"contributors": [
"Nathan Rajlich <nathan@tootallnate.net> (http://n8.io)",
"Andrew Rhyne <rhyneandrew@gmail.com>"
],
"license": "MIT",
"scripts": {
"lint": "xo",
"test": "npm run test:node && npm run test:browser",
"test:node": "istanbul cover _mocha -- test.js",
"pretest:browser": "npm run build",
"test:browser": "karma start --single-run",
"prebuild:debug": "mkdir -p dist && browserify --standalone debug -o dist/debug.es6.js .",
"build:debug": "babel -o dist/debug.js dist/debug.es6.js > dist/debug.js",
"build:test": "babel -d dist test.js",
"build": "npm run build:debug && npm run build:test",
"clean": "rimraf dist coverage",
"test:coverage": "cat ./coverage/lcov.info | coveralls"
},
"dependencies": {
"ms": "^2.1.1"
},
"devDependencies": {
"@babel/cli": "^7.0.0",
"@babel/core": "^7.0.0",
"@babel/preset-env": "^7.0.0",
"browserify": "14.4.0",
"chai": "^3.5.0",
"concurrently": "^3.1.0",
"coveralls": "^3.0.2",
"istanbul": "^0.4.5",
"karma": "^3.0.0",
"karma-chai": "^0.1.0",
"karma-mocha": "^1.3.0",
"karma-phantomjs-launcher": "^1.0.2",
"mocha": "^5.2.0",
"mocha-lcov-reporter": "^1.2.0",
"rimraf": "^2.5.4",
"xo": "^0.23.0"
},
"main": "./src/index.js",
"browser": "./src/browser.js",
"unpkg": "./dist/debug.js"
}

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/* eslint-env browser */
/**
* This is the web browser implementation of `debug()`.
*/
exports.log = log;
exports.formatArgs = formatArgs;
exports.save = save;
exports.load = load;
exports.useColors = useColors;
exports.storage = localstorage();
/**
* Colors.
*/
exports.colors = [
'#0000CC',
'#0000FF',
'#0033CC',
'#0033FF',
'#0066CC',
'#0066FF',
'#0099CC',
'#0099FF',
'#00CC00',
'#00CC33',
'#00CC66',
'#00CC99',
'#00CCCC',
'#00CCFF',
'#3300CC',
'#3300FF',
'#3333CC',
'#3333FF',
'#3366CC',
'#3366FF',
'#3399CC',
'#3399FF',
'#33CC00',
'#33CC33',
'#33CC66',
'#33CC99',
'#33CCCC',
'#33CCFF',
'#6600CC',
'#6600FF',
'#6633CC',
'#6633FF',
'#66CC00',
'#66CC33',
'#9900CC',
'#9900FF',
'#9933CC',
'#9933FF',
'#99CC00',
'#99CC33',
'#CC0000',
'#CC0033',
'#CC0066',
'#CC0099',
'#CC00CC',
'#CC00FF',
'#CC3300',
'#CC3333',
'#CC3366',
'#CC3399',
'#CC33CC',
'#CC33FF',
'#CC6600',
'#CC6633',
'#CC9900',
'#CC9933',
'#CCCC00',
'#CCCC33',
'#FF0000',
'#FF0033',
'#FF0066',
'#FF0099',
'#FF00CC',
'#FF00FF',
'#FF3300',
'#FF3333',
'#FF3366',
'#FF3399',
'#FF33CC',
'#FF33FF',
'#FF6600',
'#FF6633',
'#FF9900',
'#FF9933',
'#FFCC00',
'#FFCC33'
];
/**
* Currently only WebKit-based Web Inspectors, Firefox >= v31,
* and the Firebug extension (any Firefox version) are known
* to support "%c" CSS customizations.
*
* TODO: add a `localStorage` variable to explicitly enable/disable colors
*/
// eslint-disable-next-line complexity
function useColors() {
// NB: In an Electron preload script, document will be defined but not fully
// initialized. Since we know we're in Chrome, we'll just detect this case
// explicitly
if (typeof window !== 'undefined' && window.process && (window.process.type === 'renderer' || window.process.__nwjs)) {
return true;
}
// Internet Explorer and Edge do not support colors.
if (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\/(\d+)/)) {
return false;
}
// Is webkit? http://stackoverflow.com/a/16459606/376773
// document is undefined in react-native: https://github.com/facebook/react-native/pull/1632
return (typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance) ||
// Is firebug? http://stackoverflow.com/a/398120/376773
(typeof window !== 'undefined' && window.console && (window.console.firebug || (window.console.exception && window.console.table))) ||
// Is firefox >= v31?
// https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
(typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31) ||
// Double check webkit in userAgent just in case we are in a worker
(typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\/(\d+)/));
}
/**
* Colorize log arguments if enabled.
*
* @api public
*/
function formatArgs(args) {
args[0] = (this.useColors ? '%c' : '') +
this.namespace +
(this.useColors ? ' %c' : ' ') +
args[0] +
(this.useColors ? '%c ' : ' ') +
'+' + module.exports.humanize(this.diff);
if (!this.useColors) {
return;
}
const c = 'color: ' + this.color;
args.splice(1, 0, c, 'color: inherit');
// The final "%c" is somewhat tricky, because there could be other
// arguments passed either before or after the %c, so we need to
// figure out the correct index to insert the CSS into
let index = 0;
let lastC = 0;
args[0].replace(/%[a-zA-Z%]/g, match => {
if (match === '%%') {
return;
}
index++;
if (match === '%c') {
// We only are interested in the *last* %c
// (the user may have provided their own)
lastC = index;
}
});
args.splice(lastC, 0, c);
}
/**
* Invokes `console.log()` when available.
* No-op when `console.log` is not a "function".
*
* @api public
*/
function log(...args) {
// This hackery is required for IE8/9, where
// the `console.log` function doesn't have 'apply'
return typeof console === 'object' &&
console.log &&
console.log(...args);
}
/**
* Save `namespaces`.
*
* @param {String} namespaces
* @api private
*/
function save(namespaces) {
try {
if (namespaces) {
exports.storage.setItem('debug', namespaces);
} else {
exports.storage.removeItem('debug');
}
} catch (error) {
// Swallow
// XXX (@Qix-) should we be logging these?
}
}
/**
* Load `namespaces`.
*
* @return {String} returns the previously persisted debug modes
* @api private
*/
function load() {
let r;
try {
r = exports.storage.getItem('debug');
} catch (error) {
// Swallow
// XXX (@Qix-) should we be logging these?
}
// If debug isn't set in LS, and we're in Electron, try to load $DEBUG
if (!r && typeof process !== 'undefined' && 'env' in process) {
r = process.env.DEBUG;
}
return r;
}
/**
* Localstorage attempts to return the localstorage.
*
* This is necessary because safari throws
* when a user disables cookies/localstorage
* and you attempt to access it.
*
* @return {LocalStorage}
* @api private
*/
function localstorage() {
try {
// TVMLKit (Apple TV JS Runtime) does not have a window object, just localStorage in the global context
// The Browser also has localStorage in the global context.
return localStorage;
} catch (error) {
// Swallow
// XXX (@Qix-) should we be logging these?
}
}
module.exports = require('./common')(exports);
const {formatters} = module.exports;
/**
* Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.
*/
formatters.j = function (v) {
try {
return JSON.stringify(v);
} catch (error) {
return '[UnexpectedJSONParseError]: ' + error.message;
}
};

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/**
* This is the common logic for both the Node.js and web browser
* implementations of `debug()`.
*/
function setup(env) {
createDebug.debug = createDebug;
createDebug.default = createDebug;
createDebug.coerce = coerce;
createDebug.disable = disable;
createDebug.enable = enable;
createDebug.enabled = enabled;
createDebug.humanize = require('ms');
Object.keys(env).forEach(key => {
createDebug[key] = env[key];
});
/**
* Active `debug` instances.
*/
createDebug.instances = [];
/**
* The currently active debug mode names, and names to skip.
*/
createDebug.names = [];
createDebug.skips = [];
/**
* Map of special "%n" handling functions, for the debug "format" argument.
*
* Valid key names are a single, lower or upper-case letter, i.e. "n" and "N".
*/
createDebug.formatters = {};
/**
* Selects a color for a debug namespace
* @param {String} namespace The namespace string for the for the debug instance to be colored
* @return {Number|String} An ANSI color code for the given namespace
* @api private
*/
function selectColor(namespace) {
let hash = 0;
for (let i = 0; i < namespace.length; i++) {
hash = ((hash << 5) - hash) + namespace.charCodeAt(i);
hash |= 0; // Convert to 32bit integer
}
return createDebug.colors[Math.abs(hash) % createDebug.colors.length];
}
createDebug.selectColor = selectColor;
/**
* Create a debugger with the given `namespace`.
*
* @param {String} namespace
* @return {Function}
* @api public
*/
function createDebug(namespace) {
let prevTime;
function debug(...args) {
// Disabled?
if (!debug.enabled) {
return;
}
const self = debug;
// Set `diff` timestamp
const curr = Number(new Date());
const ms = curr - (prevTime || curr);
self.diff = ms;
self.prev = prevTime;
self.curr = curr;
prevTime = curr;
args[0] = createDebug.coerce(args[0]);
if (typeof args[0] !== 'string') {
// Anything else let's inspect with %O
args.unshift('%O');
}
// Apply any `formatters` transformations
let index = 0;
args[0] = args[0].replace(/%([a-zA-Z%])/g, (match, format) => {
// If we encounter an escaped % then don't increase the array index
if (match === '%%') {
return match;
}
index++;
const formatter = createDebug.formatters[format];
if (typeof formatter === 'function') {
const val = args[index];
match = formatter.call(self, val);
// Now we need to remove `args[index]` since it's inlined in the `format`
args.splice(index, 1);
index--;
}
return match;
});
// Apply env-specific formatting (colors, etc.)
createDebug.formatArgs.call(self, args);
const logFn = self.log || createDebug.log;
logFn.apply(self, args);
}
debug.namespace = namespace;
debug.enabled = createDebug.enabled(namespace);
debug.useColors = createDebug.useColors();
debug.color = selectColor(namespace);
debug.destroy = destroy;
debug.extend = extend;
// Debug.formatArgs = formatArgs;
// debug.rawLog = rawLog;
// env-specific initialization logic for debug instances
if (typeof createDebug.init === 'function') {
createDebug.init(debug);
}
createDebug.instances.push(debug);
return debug;
}
function destroy() {
const index = createDebug.instances.indexOf(this);
if (index !== -1) {
createDebug.instances.splice(index, 1);
return true;
}
return false;
}
function extend(namespace, delimiter) {
const newDebug = createDebug(this.namespace + (typeof delimiter === 'undefined' ? ':' : delimiter) + namespace);
newDebug.log = this.log;
return newDebug;
}
/**
* Enables a debug mode by namespaces. This can include modes
* separated by a colon and wildcards.
*
* @param {String} namespaces
* @api public
*/
function enable(namespaces) {
createDebug.save(namespaces);
createDebug.names = [];
createDebug.skips = [];
let i;
const split = (typeof namespaces === 'string' ? namespaces : '').split(/[\s,]+/);
const len = split.length;
for (i = 0; i < len; i++) {
if (!split[i]) {
// ignore empty strings
continue;
}
namespaces = split[i].replace(/\*/g, '.*?');
if (namespaces[0] === '-') {
createDebug.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));
} else {
createDebug.names.push(new RegExp('^' + namespaces + '$'));
}
}
for (i = 0; i < createDebug.instances.length; i++) {
const instance = createDebug.instances[i];
instance.enabled = createDebug.enabled(instance.namespace);
}
}
/**
* Disable debug output.
*
* @return {String} namespaces
* @api public
*/
function disable() {
const namespaces = [
...createDebug.names.map(toNamespace),
...createDebug.skips.map(toNamespace).map(namespace => '-' + namespace)
].join(',');
createDebug.enable('');
return namespaces;
}
/**
* Returns true if the given mode name is enabled, false otherwise.
*
* @param {String} name
* @return {Boolean}
* @api public
*/
function enabled(name) {
if (name[name.length - 1] === '*') {
return true;
}
let i;
let len;
for (i = 0, len = createDebug.skips.length; i < len; i++) {
if (createDebug.skips[i].test(name)) {
return false;
}
}
for (i = 0, len = createDebug.names.length; i < len; i++) {
if (createDebug.names[i].test(name)) {
return true;
}
}
return false;
}
/**
* Convert regexp to namespace
*
* @param {RegExp} regxep
* @return {String} namespace
* @api private
*/
function toNamespace(regexp) {
return regexp.toString()
.substring(2, regexp.toString().length - 2)
.replace(/\.\*\?$/, '*');
}
/**
* Coerce `val`.
*
* @param {Mixed} val
* @return {Mixed}
* @api private
*/
function coerce(val) {
if (val instanceof Error) {
return val.stack || val.message;
}
return val;
}
createDebug.enable(createDebug.load());
return createDebug;
}
module.exports = setup;

10
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/**
* Detect Electron renderer / nwjs process, which is node, but we should
* treat as a browser.
*/
if (typeof process === 'undefined' || process.type === 'renderer' || process.browser === true || process.__nwjs) {
module.exports = require('./browser.js');
} else {
module.exports = require('./node.js');
}

257
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/**
* Module dependencies.
*/
const tty = require('tty');
const util = require('util');
/**
* This is the Node.js implementation of `debug()`.
*/
exports.init = init;
exports.log = log;
exports.formatArgs = formatArgs;
exports.save = save;
exports.load = load;
exports.useColors = useColors;
/**
* Colors.
*/
exports.colors = [6, 2, 3, 4, 5, 1];
try {
// Optional dependency (as in, doesn't need to be installed, NOT like optionalDependencies in package.json)
// eslint-disable-next-line import/no-extraneous-dependencies
const supportsColor = require('supports-color');
if (supportsColor && (supportsColor.stderr || supportsColor).level >= 2) {
exports.colors = [
20,
21,
26,
27,
32,
33,
38,
39,
40,
41,
42,
43,
44,
45,
56,
57,
62,
63,
68,
69,
74,
75,
76,
77,
78,
79,
80,
81,
92,
93,
98,
99,
112,
113,
128,
129,
134,
135,
148,
149,
160,
161,
162,
163,
164,
165,
166,
167,
168,
169,
170,
171,
172,
173,
178,
179,
184,
185,
196,
197,
198,
199,
200,
201,
202,
203,
204,
205,
206,
207,
208,
209,
214,
215,
220,
221
];
}
} catch (error) {
// Swallow - we only care if `supports-color` is available; it doesn't have to be.
}
/**
* Build up the default `inspectOpts` object from the environment variables.
*
* $ DEBUG_COLORS=no DEBUG_DEPTH=10 DEBUG_SHOW_HIDDEN=enabled node script.js
*/
exports.inspectOpts = Object.keys(process.env).filter(key => {
return /^debug_/i.test(key);
}).reduce((obj, key) => {
// Camel-case
const prop = key
.substring(6)
.toLowerCase()
.replace(/_([a-z])/g, (_, k) => {
return k.toUpperCase();
});
// Coerce string value into JS value
let val = process.env[key];
if (/^(yes|on|true|enabled)$/i.test(val)) {
val = true;
} else if (/^(no|off|false|disabled)$/i.test(val)) {
val = false;
} else if (val === 'null') {
val = null;
} else {
val = Number(val);
}
obj[prop] = val;
return obj;
}, {});
/**
* Is stdout a TTY? Colored output is enabled when `true`.
*/
function useColors() {
return 'colors' in exports.inspectOpts ?
Boolean(exports.inspectOpts.colors) :
tty.isatty(process.stderr.fd);
}
/**
* Adds ANSI color escape codes if enabled.
*
* @api public
*/
function formatArgs(args) {
const {namespace: name, useColors} = this;
if (useColors) {
const c = this.color;
const colorCode = '\u001B[3' + (c < 8 ? c : '8;5;' + c);
const prefix = ` ${colorCode};1m${name} \u001B[0m`;
args[0] = prefix + args[0].split('\n').join('\n' + prefix);
args.push(colorCode + 'm+' + module.exports.humanize(this.diff) + '\u001B[0m');
} else {
args[0] = getDate() + name + ' ' + args[0];
}
}
function getDate() {
if (exports.inspectOpts.hideDate) {
return '';
}
return new Date().toISOString() + ' ';
}
/**
* Invokes `util.format()` with the specified arguments and writes to stderr.
*/
function log(...args) {
return process.stderr.write(util.format(...args) + '\n');
}
/**
* Save `namespaces`.
*
* @param {String} namespaces
* @api private
*/
function save(namespaces) {
if (namespaces) {
process.env.DEBUG = namespaces;
} else {
// If you set a process.env field to null or undefined, it gets cast to the
// string 'null' or 'undefined'. Just delete instead.
delete process.env.DEBUG;
}
}
/**
* Load `namespaces`.
*
* @return {String} returns the previously persisted debug modes
* @api private
*/
function load() {
return process.env.DEBUG;
}
/**
* Init logic for `debug` instances.
*
* Create a new `inspectOpts` object in case `useColors` is set
* differently for a particular `debug` instance.
*/
function init(debug) {
debug.inspectOpts = {};
const keys = Object.keys(exports.inspectOpts);
for (let i = 0; i < keys.length; i++) {
debug.inspectOpts[keys[i]] = exports.inspectOpts[keys[i]];
}
}
module.exports = require('./common')(exports);
const {formatters} = module.exports;
/**
* Map %o to `util.inspect()`, all on a single line.
*/
formatters.o = function (v) {
this.inspectOpts.colors = this.useColors;
return util.inspect(v, this.inspectOpts)
.replace(/\s*\n\s*/g, ' ');
};
/**
* Map %O to `util.inspect()`, allowing multiple lines if needed.
*/
formatters.O = function (v) {
this.inspectOpts.colors = this.useColors;
return util.inspect(v, this.inspectOpts);
};

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/**
* Helpers.
*/
var s = 1000;
var m = s * 60;
var h = m * 60;
var d = h * 24;
var w = d * 7;
var y = d * 365.25;
/**
* Parse or format the given `val`.
*
* Options:
*
* - `long` verbose formatting [false]
*
* @param {String|Number} val
* @param {Object} [options]
* @throws {Error} throw an error if val is not a non-empty string or a number
* @return {String|Number}
* @api public
*/
module.exports = function(val, options) {
options = options || {};
var type = typeof val;
if (type === 'string' && val.length > 0) {
return parse(val);
} else if (type === 'number' && isFinite(val)) {
return options.long ? fmtLong(val) : fmtShort(val);
}
throw new Error(
'val is not a non-empty string or a valid number. val=' +
JSON.stringify(val)
);
};
/**
* Parse the given `str` and return milliseconds.
*
* @param {String} str
* @return {Number}
* @api private
*/
function parse(str) {
str = String(str);
if (str.length > 100) {
return;
}
var match = /^(-?(?:\d+)?\.?\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|weeks?|w|years?|yrs?|y)?$/i.exec(
str
);
if (!match) {
return;
}
var n = parseFloat(match[1]);
var type = (match[2] || 'ms').toLowerCase();
switch (type) {
case 'years':
case 'year':
case 'yrs':
case 'yr':
case 'y':
return n * y;
case 'weeks':
case 'week':
case 'w':
return n * w;
case 'days':
case 'day':
case 'd':
return n * d;
case 'hours':
case 'hour':
case 'hrs':
case 'hr':
case 'h':
return n * h;
case 'minutes':
case 'minute':
case 'mins':
case 'min':
case 'm':
return n * m;
case 'seconds':
case 'second':
case 'secs':
case 'sec':
case 's':
return n * s;
case 'milliseconds':
case 'millisecond':
case 'msecs':
case 'msec':
case 'ms':
return n;
default:
return undefined;
}
}
/**
* Short format for `ms`.
*
* @param {Number} ms
* @return {String}
* @api private
*/
function fmtShort(ms) {
var msAbs = Math.abs(ms);
if (msAbs >= d) {
return Math.round(ms / d) + 'd';
}
if (msAbs >= h) {
return Math.round(ms / h) + 'h';
}
if (msAbs >= m) {
return Math.round(ms / m) + 'm';
}
if (msAbs >= s) {
return Math.round(ms / s) + 's';
}
return ms + 'ms';
}
/**
* Long format for `ms`.
*
* @param {Number} ms
* @return {String}
* @api private
*/
function fmtLong(ms) {
var msAbs = Math.abs(ms);
if (msAbs >= d) {
return plural(ms, msAbs, d, 'day');
}
if (msAbs >= h) {
return plural(ms, msAbs, h, 'hour');
}
if (msAbs >= m) {
return plural(ms, msAbs, m, 'minute');
}
if (msAbs >= s) {
return plural(ms, msAbs, s, 'second');
}
return ms + ' ms';
}
/**
* Pluralization helper.
*/
function plural(ms, msAbs, n, name) {
var isPlural = msAbs >= n * 1.5;
return Math.round(ms / n) + ' ' + name + (isPlural ? 's' : '');
}

21
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The MIT License (MIT)
Copyright (c) 2016 Zeit, Inc.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

37
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{
"name": "ms",
"version": "2.1.2",
"description": "Tiny millisecond conversion utility",
"repository": "zeit/ms",
"main": "./index",
"files": [
"index.js"
],
"scripts": {
"precommit": "lint-staged",
"lint": "eslint lib/* bin/*",
"test": "mocha tests.js"
},
"eslintConfig": {
"extends": "eslint:recommended",
"env": {
"node": true,
"es6": true
}
},
"lint-staged": {
"*.js": [
"npm run lint",
"prettier --single-quote --write",
"git add"
]
},
"license": "MIT",
"devDependencies": {
"eslint": "4.12.1",
"expect.js": "0.3.1",
"husky": "0.14.3",
"lint-staged": "5.0.0",
"mocha": "4.0.1"
}
}

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# ms
[![Build Status](https://travis-ci.org/zeit/ms.svg?branch=master)](https://travis-ci.org/zeit/ms)
[![Join the community on Spectrum](https://withspectrum.github.io/badge/badge.svg)](https://spectrum.chat/zeit)
Use this package to easily convert various time formats to milliseconds.
## Examples
```js
ms('2 days') // 172800000
ms('1d') // 86400000
ms('10h') // 36000000
ms('2.5 hrs') // 9000000
ms('2h') // 7200000
ms('1m') // 60000
ms('5s') // 5000
ms('1y') // 31557600000
ms('100') // 100
ms('-3 days') // -259200000
ms('-1h') // -3600000
ms('-200') // -200
```
### Convert from Milliseconds
```js
ms(60000) // "1m"
ms(2 * 60000) // "2m"
ms(-3 * 60000) // "-3m"
ms(ms('10 hours')) // "10h"
```
### Time Format Written-Out
```js
ms(60000, { long: true }) // "1 minute"
ms(2 * 60000, { long: true }) // "2 minutes"
ms(-3 * 60000, { long: true }) // "-3 minutes"
ms(ms('10 hours'), { long: true }) // "10 hours"
```
## Features
- Works both in [Node.js](https://nodejs.org) and in the browser
- If a number is supplied to `ms`, a string with a unit is returned
- If a string that contains the number is supplied, it returns it as a number (e.g.: it returns `100` for `'100'`)
- If you pass a string with a number and a valid unit, the number of equivalent milliseconds is returned
## Related Packages
- [ms.macro](https://github.com/knpwrs/ms.macro) - Run `ms` as a macro at build-time.
## Caught a Bug?
1. [Fork](https://help.github.com/articles/fork-a-repo/) this repository to your own GitHub account and then [clone](https://help.github.com/articles/cloning-a-repository/) it to your local device
2. Link the package to the global module directory: `npm link`
3. Within the module you want to test your local development instance of ms, just link it to the dependencies: `npm link ms`. Instead of the default one from npm, Node.js will now use your clone of ms!
As always, you can run the tests using: `npm test`

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# Developer's Certificate of Origin 1.1
By making a contribution to this project, I certify that:
* (a) The contribution was created in whole or in part by me and I
have the right to submit it under the open source license
indicated in the file; or
* (b) The contribution is based upon previous work that, to the best
of my knowledge, is covered under an appropriate open source
license and I have the right under that license to submit that
work with modifications, whether created in whole or in part
by me, under the same open source license (unless I am
permitted to submit under a different license), as indicated
in the file; or
* (c) The contribution was provided directly to me by some other
person who certified (a), (b) or (c) and I have not modified
it.
* (d) I understand and agree that this project and the contribution
are public and that a record of the contribution (including all
personal information I submit with it, including my sign-off) is
maintained indefinitely and may be redistributed consistent with
this project or the open source license(s) involved.
## Moderation Policy
The [Node.js Moderation Policy] applies to this WG.
## Code of Conduct
The [Node.js Code of Conduct][] applies to this WG.
[Node.js Code of Conduct]:
https://github.com/nodejs/node/blob/master/CODE_OF_CONDUCT.md
[Node.js Moderation Policy]:
https://github.com/nodejs/TSC/blob/master/Moderation-Policy.md

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### Streams Working Group
The Node.js Streams is jointly governed by a Working Group
(WG)
that is responsible for high-level guidance of the project.
The WG has final authority over this project including:
* Technical direction
* Project governance and process (including this policy)
* Contribution policy
* GitHub repository hosting
* Conduct guidelines
* Maintaining the list of additional Collaborators
For the current list of WG members, see the project
[README.md](./README.md#current-project-team-members).
### Collaborators
The readable-stream GitHub repository is
maintained by the WG and additional Collaborators who are added by the
WG on an ongoing basis.
Individuals making significant and valuable contributions are made
Collaborators and given commit-access to the project. These
individuals are identified by the WG and their addition as
Collaborators is discussed during the WG meeting.
_Note:_ If you make a significant contribution and are not considered
for commit-access log an issue or contact a WG member directly and it
will be brought up in the next WG meeting.
Modifications of the contents of the readable-stream repository are
made on
a collaborative basis. Anybody with a GitHub account may propose a
modification via pull request and it will be considered by the project
Collaborators. All pull requests must be reviewed and accepted by a
Collaborator with sufficient expertise who is able to take full
responsibility for the change. In the case of pull requests proposed
by an existing Collaborator, an additional Collaborator is required
for sign-off. Consensus should be sought if additional Collaborators
participate and there is disagreement around a particular
modification. See _Consensus Seeking Process_ below for further detail
on the consensus model used for governance.
Collaborators may opt to elevate significant or controversial
modifications, or modifications that have not found consensus to the
WG for discussion by assigning the ***WG-agenda*** tag to a pull
request or issue. The WG should serve as the final arbiter where
required.
For the current list of Collaborators, see the project
[README.md](./README.md#members).
### WG Membership
WG seats are not time-limited. There is no fixed size of the WG.
However, the expected target is between 6 and 12, to ensure adequate
coverage of important areas of expertise, balanced with the ability to
make decisions efficiently.
There is no specific set of requirements or qualifications for WG
membership beyond these rules.
The WG may add additional members to the WG by unanimous consensus.
A WG member may be removed from the WG by voluntary resignation, or by
unanimous consensus of all other WG members.
Changes to WG membership should be posted in the agenda, and may be
suggested as any other agenda item (see "WG Meetings" below).
If an addition or removal is proposed during a meeting, and the full
WG is not in attendance to participate, then the addition or removal
is added to the agenda for the subsequent meeting. This is to ensure
that all members are given the opportunity to participate in all
membership decisions. If a WG member is unable to attend a meeting
where a planned membership decision is being made, then their consent
is assumed.
No more than 1/3 of the WG members may be affiliated with the same
employer. If removal or resignation of a WG member, or a change of
employment by a WG member, creates a situation where more than 1/3 of
the WG membership shares an employer, then the situation must be
immediately remedied by the resignation or removal of one or more WG
members affiliated with the over-represented employer(s).
### WG Meetings
The WG meets occasionally on a Google Hangout On Air. A designated moderator
approved by the WG runs the meeting. Each meeting should be
published to YouTube.
Items are added to the WG agenda that are considered contentious or
are modifications of governance, contribution policy, WG membership,
or release process.
The intention of the agenda is not to approve or review all patches;
that should happen continuously on GitHub and be handled by the larger
group of Collaborators.
Any community member or contributor can ask that something be added to
the next meeting's agenda by logging a GitHub Issue. Any Collaborator,
WG member or the moderator can add the item to the agenda by adding
the ***WG-agenda*** tag to the issue.
Prior to each WG meeting the moderator will share the Agenda with
members of the WG. WG members can add any items they like to the
agenda at the beginning of each meeting. The moderator and the WG
cannot veto or remove items.
The WG may invite persons or representatives from certain projects to
participate in a non-voting capacity.
The moderator is responsible for summarizing the discussion of each
agenda item and sends it as a pull request after the meeting.
### Consensus Seeking Process
The WG follows a
[Consensus
Seeking](http://en.wikipedia.org/wiki/Consensus-seeking_decision-making)
decision-making model.
When an agenda item has appeared to reach a consensus the moderator
will ask "Does anyone object?" as a final call for dissent from the
consensus.
If an agenda item cannot reach a consensus a WG member can call for
either a closing vote or a vote to table the issue to the next
meeting. The call for a vote must be seconded by a majority of the WG
or else the discussion will continue. Simple majority wins.
Note that changes to WG membership require a majority consensus. See
"WG Membership" above.

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Node.js is licensed for use as follows:
"""
Copyright Node.js contributors. All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to
deal in the Software without restriction, including without limitation the
rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
IN THE SOFTWARE.
"""
This license applies to parts of Node.js originating from the
https://github.com/joyent/node repository:
"""
Copyright Joyent, Inc. and other Node contributors. All rights reserved.
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to
deal in the Software without restriction, including without limitation the
rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
IN THE SOFTWARE.
"""

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# readable-stream
***Node.js core streams for userland*** [![Build Status](https://travis-ci.com/nodejs/readable-stream.svg?branch=master)](https://travis-ci.com/nodejs/readable-stream)
[![NPM](https://nodei.co/npm/readable-stream.png?downloads=true&downloadRank=true)](https://nodei.co/npm/readable-stream/)
[![NPM](https://nodei.co/npm-dl/readable-stream.png?&months=6&height=3)](https://nodei.co/npm/readable-stream/)
[![Sauce Test Status](https://saucelabs.com/browser-matrix/readabe-stream.svg)](https://saucelabs.com/u/readabe-stream)
```bash
npm install --save readable-stream
```
This package is a mirror of the streams implementations in Node.js.
Full documentation may be found on the [Node.js website](https://nodejs.org/dist/v10.19.0/docs/api/stream.html).
If you want to guarantee a stable streams base, regardless of what version of
Node you, or the users of your libraries are using, use **readable-stream** *only* and avoid the *"stream"* module in Node-core, for background see [this blogpost](http://r.va.gg/2014/06/why-i-dont-use-nodes-core-stream-module.html).
As of version 2.0.0 **readable-stream** uses semantic versioning.
## Version 3.x.x
v3.x.x of `readable-stream` is a cut from Node 10. This version supports Node 6, 8, and 10, as well as evergreen browsers, IE 11 and latest Safari. The breaking changes introduced by v3 are composed by the combined breaking changes in [Node v9](https://nodejs.org/en/blog/release/v9.0.0/) and [Node v10](https://nodejs.org/en/blog/release/v10.0.0/), as follows:
1. Error codes: https://github.com/nodejs/node/pull/13310,
https://github.com/nodejs/node/pull/13291,
https://github.com/nodejs/node/pull/16589,
https://github.com/nodejs/node/pull/15042,
https://github.com/nodejs/node/pull/15665,
https://github.com/nodejs/readable-stream/pull/344
2. 'readable' have precedence over flowing
https://github.com/nodejs/node/pull/18994
3. make virtual methods errors consistent
https://github.com/nodejs/node/pull/18813
4. updated streams error handling
https://github.com/nodejs/node/pull/18438
5. writable.end should return this.
https://github.com/nodejs/node/pull/18780
6. readable continues to read when push('')
https://github.com/nodejs/node/pull/18211
7. add custom inspect to BufferList
https://github.com/nodejs/node/pull/17907
8. always defer 'readable' with nextTick
https://github.com/nodejs/node/pull/17979
## Version 2.x.x
v2.x.x of `readable-stream` is a cut of the stream module from Node 8 (there have been no semver-major changes from Node 4 to 8). This version supports all Node.js versions from 0.8, as well as evergreen browsers and IE 10 & 11.
### Big Thanks
Cross-browser Testing Platform and Open Source <3 Provided by [Sauce Labs][sauce]
# Usage
You can swap your `require('stream')` with `require('readable-stream')`
without any changes, if you are just using one of the main classes and
functions.
```js
const {
Readable,
Writable,
Transform,
Duplex,
pipeline,
finished
} = require('readable-stream')
````
Note that `require('stream')` will return `Stream`, while
`require('readable-stream')` will return `Readable`. We discourage using
whatever is exported directly, but rather use one of the properties as
shown in the example above.
# Streams Working Group
`readable-stream` is maintained by the Streams Working Group, which
oversees the development and maintenance of the Streams API within
Node.js. The responsibilities of the Streams Working Group include:
* Addressing stream issues on the Node.js issue tracker.
* Authoring and editing stream documentation within the Node.js project.
* Reviewing changes to stream subclasses within the Node.js project.
* Redirecting changes to streams from the Node.js project to this
project.
* Assisting in the implementation of stream providers within Node.js.
* Recommending versions of `readable-stream` to be included in Node.js.
* Messaging about the future of streams to give the community advance
notice of changes.
<a name="members"></a>
## Team Members
* **Calvin Metcalf** ([@calvinmetcalf](https://github.com/calvinmetcalf)) &lt;calvin.metcalf@gmail.com&gt;
- Release GPG key: F3EF5F62A87FC27A22E643F714CE4FF5015AA242
* **Mathias Buus** ([@mafintosh](https://github.com/mafintosh)) &lt;mathiasbuus@gmail.com&gt;
* **Matteo Collina** ([@mcollina](https://github.com/mcollina)) &lt;matteo.collina@gmail.com&gt;
- Release GPG key: 3ABC01543F22DD2239285CDD818674489FBC127E
* **Irina Shestak** ([@lrlna](https://github.com/lrlna)) &lt;shestak.irina@gmail.com&gt;
* **Yoshua Wyuts** ([@yoshuawuyts](https://github.com/yoshuawuyts)) &lt;yoshuawuyts@gmail.com&gt;
[sauce]: https://saucelabs.com

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'use strict';
function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; subClass.__proto__ = superClass; }
var codes = {};
function createErrorType(code, message, Base) {
if (!Base) {
Base = Error;
}
function getMessage(arg1, arg2, arg3) {
if (typeof message === 'string') {
return message;
} else {
return message(arg1, arg2, arg3);
}
}
var NodeError =
/*#__PURE__*/
function (_Base) {
_inheritsLoose(NodeError, _Base);
function NodeError(arg1, arg2, arg3) {
return _Base.call(this, getMessage(arg1, arg2, arg3)) || this;
}
return NodeError;
}(Base);
NodeError.prototype.name = Base.name;
NodeError.prototype.code = code;
codes[code] = NodeError;
} // https://github.com/nodejs/node/blob/v10.8.0/lib/internal/errors.js
function oneOf(expected, thing) {
if (Array.isArray(expected)) {
var len = expected.length;
expected = expected.map(function (i) {
return String(i);
});
if (len > 2) {
return "one of ".concat(thing, " ").concat(expected.slice(0, len - 1).join(', '), ", or ") + expected[len - 1];
} else if (len === 2) {
return "one of ".concat(thing, " ").concat(expected[0], " or ").concat(expected[1]);
} else {
return "of ".concat(thing, " ").concat(expected[0]);
}
} else {
return "of ".concat(thing, " ").concat(String(expected));
}
} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith
function startsWith(str, search, pos) {
return str.substr(!pos || pos < 0 ? 0 : +pos, search.length) === search;
} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/endsWith
function endsWith(str, search, this_len) {
if (this_len === undefined || this_len > str.length) {
this_len = str.length;
}
return str.substring(this_len - search.length, this_len) === search;
} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/includes
function includes(str, search, start) {
if (typeof start !== 'number') {
start = 0;
}
if (start + search.length > str.length) {
return false;
} else {
return str.indexOf(search, start) !== -1;
}
}
createErrorType('ERR_INVALID_OPT_VALUE', function (name, value) {
return 'The value "' + value + '" is invalid for option "' + name + '"';
}, TypeError);
createErrorType('ERR_INVALID_ARG_TYPE', function (name, expected, actual) {
// determiner: 'must be' or 'must not be'
var determiner;
if (typeof expected === 'string' && startsWith(expected, 'not ')) {
determiner = 'must not be';
expected = expected.replace(/^not /, '');
} else {
determiner = 'must be';
}
var msg;
if (endsWith(name, ' argument')) {
// For cases like 'first argument'
msg = "The ".concat(name, " ").concat(determiner, " ").concat(oneOf(expected, 'type'));
} else {
var type = includes(name, '.') ? 'property' : 'argument';
msg = "The \"".concat(name, "\" ").concat(type, " ").concat(determiner, " ").concat(oneOf(expected, 'type'));
}
msg += ". Received type ".concat(typeof actual);
return msg;
}, TypeError);
createErrorType('ERR_STREAM_PUSH_AFTER_EOF', 'stream.push() after EOF');
createErrorType('ERR_METHOD_NOT_IMPLEMENTED', function (name) {
return 'The ' + name + ' method is not implemented';
});
createErrorType('ERR_STREAM_PREMATURE_CLOSE', 'Premature close');
createErrorType('ERR_STREAM_DESTROYED', function (name) {
return 'Cannot call ' + name + ' after a stream was destroyed';
});
createErrorType('ERR_MULTIPLE_CALLBACK', 'Callback called multiple times');
createErrorType('ERR_STREAM_CANNOT_PIPE', 'Cannot pipe, not readable');
createErrorType('ERR_STREAM_WRITE_AFTER_END', 'write after end');
createErrorType('ERR_STREAM_NULL_VALUES', 'May not write null values to stream', TypeError);
createErrorType('ERR_UNKNOWN_ENCODING', function (arg) {
return 'Unknown encoding: ' + arg;
}, TypeError);
createErrorType('ERR_STREAM_UNSHIFT_AFTER_END_EVENT', 'stream.unshift() after end event');
module.exports.codes = codes;

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'use strict';
const codes = {};
function createErrorType(code, message, Base) {
if (!Base) {
Base = Error
}
function getMessage (arg1, arg2, arg3) {
if (typeof message === 'string') {
return message
} else {
return message(arg1, arg2, arg3)
}
}
class NodeError extends Base {
constructor (arg1, arg2, arg3) {
super(getMessage(arg1, arg2, arg3));
}
}
NodeError.prototype.name = Base.name;
NodeError.prototype.code = code;
codes[code] = NodeError;
}
// https://github.com/nodejs/node/blob/v10.8.0/lib/internal/errors.js
function oneOf(expected, thing) {
if (Array.isArray(expected)) {
const len = expected.length;
expected = expected.map((i) => String(i));
if (len > 2) {
return `one of ${thing} ${expected.slice(0, len - 1).join(', ')}, or ` +
expected[len - 1];
} else if (len === 2) {
return `one of ${thing} ${expected[0]} or ${expected[1]}`;
} else {
return `of ${thing} ${expected[0]}`;
}
} else {
return `of ${thing} ${String(expected)}`;
}
}
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith
function startsWith(str, search, pos) {
return str.substr(!pos || pos < 0 ? 0 : +pos, search.length) === search;
}
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/endsWith
function endsWith(str, search, this_len) {
if (this_len === undefined || this_len > str.length) {
this_len = str.length;
}
return str.substring(this_len - search.length, this_len) === search;
}
// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/includes
function includes(str, search, start) {
if (typeof start !== 'number') {
start = 0;
}
if (start + search.length > str.length) {
return false;
} else {
return str.indexOf(search, start) !== -1;
}
}
createErrorType('ERR_INVALID_OPT_VALUE', function (name, value) {
return 'The value "' + value + '" is invalid for option "' + name + '"'
}, TypeError);
createErrorType('ERR_INVALID_ARG_TYPE', function (name, expected, actual) {
// determiner: 'must be' or 'must not be'
let determiner;
if (typeof expected === 'string' && startsWith(expected, 'not ')) {
determiner = 'must not be';
expected = expected.replace(/^not /, '');
} else {
determiner = 'must be';
}
let msg;
if (endsWith(name, ' argument')) {
// For cases like 'first argument'
msg = `The ${name} ${determiner} ${oneOf(expected, 'type')}`;
} else {
const type = includes(name, '.') ? 'property' : 'argument';
msg = `The "${name}" ${type} ${determiner} ${oneOf(expected, 'type')}`;
}
msg += `. Received type ${typeof actual}`;
return msg;
}, TypeError);
createErrorType('ERR_STREAM_PUSH_AFTER_EOF', 'stream.push() after EOF');
createErrorType('ERR_METHOD_NOT_IMPLEMENTED', function (name) {
return 'The ' + name + ' method is not implemented'
});
createErrorType('ERR_STREAM_PREMATURE_CLOSE', 'Premature close');
createErrorType('ERR_STREAM_DESTROYED', function (name) {
return 'Cannot call ' + name + ' after a stream was destroyed';
});
createErrorType('ERR_MULTIPLE_CALLBACK', 'Callback called multiple times');
createErrorType('ERR_STREAM_CANNOT_PIPE', 'Cannot pipe, not readable');
createErrorType('ERR_STREAM_WRITE_AFTER_END', 'write after end');
createErrorType('ERR_STREAM_NULL_VALUES', 'May not write null values to stream', TypeError);
createErrorType('ERR_UNKNOWN_ENCODING', function (arg) {
return 'Unknown encoding: ' + arg
}, TypeError);
createErrorType('ERR_STREAM_UNSHIFT_AFTER_END_EVENT', 'stream.unshift() after end event');
module.exports.codes = codes;

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'use strict'
var experimentalWarnings = new Set();
function emitExperimentalWarning(feature) {
if (experimentalWarnings.has(feature)) return;
var msg = feature + ' is an experimental feature. This feature could ' +
'change at any time';
experimentalWarnings.add(feature);
process.emitWarning(msg, 'ExperimentalWarning');
}
function noop() {}
module.exports.emitExperimentalWarning = process.emitWarning
? emitExperimentalWarning
: noop;

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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a duplex stream is just a stream that is both readable and writable.
// Since JS doesn't have multiple prototypal inheritance, this class
// prototypally inherits from Readable, and then parasitically from
// Writable.
'use strict';
/*<replacement>*/
var objectKeys = Object.keys || function (obj) {
var keys = [];
for (var key in obj) {
keys.push(key);
}
return keys;
};
/*</replacement>*/
module.exports = Duplex;
var Readable = require('./_stream_readable');
var Writable = require('./_stream_writable');
require('inherits')(Duplex, Readable);
{
// Allow the keys array to be GC'ed.
var keys = objectKeys(Writable.prototype);
for (var v = 0; v < keys.length; v++) {
var method = keys[v];
if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method];
}
}
function Duplex(options) {
if (!(this instanceof Duplex)) return new Duplex(options);
Readable.call(this, options);
Writable.call(this, options);
this.allowHalfOpen = true;
if (options) {
if (options.readable === false) this.readable = false;
if (options.writable === false) this.writable = false;
if (options.allowHalfOpen === false) {
this.allowHalfOpen = false;
this.once('end', onend);
}
}
}
Object.defineProperty(Duplex.prototype, 'writableHighWaterMark', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function get() {
return this._writableState.highWaterMark;
}
});
Object.defineProperty(Duplex.prototype, 'writableBuffer', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function get() {
return this._writableState && this._writableState.getBuffer();
}
});
Object.defineProperty(Duplex.prototype, 'writableLength', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function get() {
return this._writableState.length;
}
}); // the no-half-open enforcer
function onend() {
// If the writable side ended, then we're ok.
if (this._writableState.ended) return; // no more data can be written.
// But allow more writes to happen in this tick.
process.nextTick(onEndNT, this);
}
function onEndNT(self) {
self.end();
}
Object.defineProperty(Duplex.prototype, 'destroyed', {
// making it explicit this property is not enumerable
// because otherwise some prototype manipulation in
// userland will fail
enumerable: false,
get: function get() {
if (this._readableState === undefined || this._writableState === undefined) {
return false;
}
return this._readableState.destroyed && this._writableState.destroyed;
},
set: function set(value) {
// we ignore the value if the stream
// has not been initialized yet
if (this._readableState === undefined || this._writableState === undefined) {
return;
} // backward compatibility, the user is explicitly
// managing destroyed
this._readableState.destroyed = value;
this._writableState.destroyed = value;
}
});

39
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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a passthrough stream.
// basically just the most minimal sort of Transform stream.
// Every written chunk gets output as-is.
'use strict';
module.exports = PassThrough;
var Transform = require('./_stream_transform');
require('inherits')(PassThrough, Transform);
function PassThrough(options) {
if (!(this instanceof PassThrough)) return new PassThrough(options);
Transform.call(this, options);
}
PassThrough.prototype._transform = function (chunk, encoding, cb) {
cb(null, chunk);
};

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node_modules/spdy-transport/node_modules/readable-stream/lib/_stream_transform.js generated vendored Normal file
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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a transform stream is a readable/writable stream where you do
// something with the data. Sometimes it's called a "filter",
// but that's not a great name for it, since that implies a thing where
// some bits pass through, and others are simply ignored. (That would
// be a valid example of a transform, of course.)
//
// While the output is causally related to the input, it's not a
// necessarily symmetric or synchronous transformation. For example,
// a zlib stream might take multiple plain-text writes(), and then
// emit a single compressed chunk some time in the future.
//
// Here's how this works:
//
// The Transform stream has all the aspects of the readable and writable
// stream classes. When you write(chunk), that calls _write(chunk,cb)
// internally, and returns false if there's a lot of pending writes
// buffered up. When you call read(), that calls _read(n) until
// there's enough pending readable data buffered up.
//
// In a transform stream, the written data is placed in a buffer. When
// _read(n) is called, it transforms the queued up data, calling the
// buffered _write cb's as it consumes chunks. If consuming a single
// written chunk would result in multiple output chunks, then the first
// outputted bit calls the readcb, and subsequent chunks just go into
// the read buffer, and will cause it to emit 'readable' if necessary.
//
// This way, back-pressure is actually determined by the reading side,
// since _read has to be called to start processing a new chunk. However,
// a pathological inflate type of transform can cause excessive buffering
// here. For example, imagine a stream where every byte of input is
// interpreted as an integer from 0-255, and then results in that many
// bytes of output. Writing the 4 bytes {ff,ff,ff,ff} would result in
// 1kb of data being output. In this case, you could write a very small
// amount of input, and end up with a very large amount of output. In
// such a pathological inflating mechanism, there'd be no way to tell
// the system to stop doing the transform. A single 4MB write could
// cause the system to run out of memory.
//
// However, even in such a pathological case, only a single written chunk
// would be consumed, and then the rest would wait (un-transformed) until
// the results of the previous transformed chunk were consumed.
'use strict';
module.exports = Transform;
var _require$codes = require('../errors').codes,
ERR_METHOD_NOT_IMPLEMENTED = _require$codes.ERR_METHOD_NOT_IMPLEMENTED,
ERR_MULTIPLE_CALLBACK = _require$codes.ERR_MULTIPLE_CALLBACK,
ERR_TRANSFORM_ALREADY_TRANSFORMING = _require$codes.ERR_TRANSFORM_ALREADY_TRANSFORMING,
ERR_TRANSFORM_WITH_LENGTH_0 = _require$codes.ERR_TRANSFORM_WITH_LENGTH_0;
var Duplex = require('./_stream_duplex');
require('inherits')(Transform, Duplex);
function afterTransform(er, data) {
var ts = this._transformState;
ts.transforming = false;
var cb = ts.writecb;
if (cb === null) {
return this.emit('error', new ERR_MULTIPLE_CALLBACK());
}
ts.writechunk = null;
ts.writecb = null;
if (data != null) // single equals check for both `null` and `undefined`
this.push(data);
cb(er);
var rs = this._readableState;
rs.reading = false;
if (rs.needReadable || rs.length < rs.highWaterMark) {
this._read(rs.highWaterMark);
}
}
function Transform(options) {
if (!(this instanceof Transform)) return new Transform(options);
Duplex.call(this, options);
this._transformState = {
afterTransform: afterTransform.bind(this),
needTransform: false,
transforming: false,
writecb: null,
writechunk: null,
writeencoding: null
}; // start out asking for a readable event once data is transformed.
this._readableState.needReadable = true; // we have implemented the _read method, and done the other things
// that Readable wants before the first _read call, so unset the
// sync guard flag.
this._readableState.sync = false;
if (options) {
if (typeof options.transform === 'function') this._transform = options.transform;
if (typeof options.flush === 'function') this._flush = options.flush;
} // When the writable side finishes, then flush out anything remaining.
this.on('prefinish', prefinish);
}
function prefinish() {
var _this = this;
if (typeof this._flush === 'function' && !this._readableState.destroyed) {
this._flush(function (er, data) {
done(_this, er, data);
});
} else {
done(this, null, null);
}
}
Transform.prototype.push = function (chunk, encoding) {
this._transformState.needTransform = false;
return Duplex.prototype.push.call(this, chunk, encoding);
}; // This is the part where you do stuff!
// override this function in implementation classes.
// 'chunk' is an input chunk.
//
// Call `push(newChunk)` to pass along transformed output
// to the readable side. You may call 'push' zero or more times.
//
// Call `cb(err)` when you are done with this chunk. If you pass
// an error, then that'll put the hurt on the whole operation. If you
// never call cb(), then you'll never get another chunk.
Transform.prototype._transform = function (chunk, encoding, cb) {
cb(new ERR_METHOD_NOT_IMPLEMENTED('_transform()'));
};
Transform.prototype._write = function (chunk, encoding, cb) {
var ts = this._transformState;
ts.writecb = cb;
ts.writechunk = chunk;
ts.writeencoding = encoding;
if (!ts.transforming) {
var rs = this._readableState;
if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark);
}
}; // Doesn't matter what the args are here.
// _transform does all the work.
// That we got here means that the readable side wants more data.
Transform.prototype._read = function (n) {
var ts = this._transformState;
if (ts.writechunk !== null && !ts.transforming) {
ts.transforming = true;
this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
} else {
// mark that we need a transform, so that any data that comes in
// will get processed, now that we've asked for it.
ts.needTransform = true;
}
};
Transform.prototype._destroy = function (err, cb) {
Duplex.prototype._destroy.call(this, err, function (err2) {
cb(err2);
});
};
function done(stream, er, data) {
if (er) return stream.emit('error', er);
if (data != null) // single equals check for both `null` and `undefined`
stream.push(data); // TODO(BridgeAR): Write a test for these two error cases
// if there's nothing in the write buffer, then that means
// that nothing more will ever be provided
if (stream._writableState.length) throw new ERR_TRANSFORM_WITH_LENGTH_0();
if (stream._transformState.transforming) throw new ERR_TRANSFORM_ALREADY_TRANSFORMING();
return stream.push(null);
}

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node_modules/spdy-transport/node_modules/readable-stream/lib/_stream_writable.js generated vendored Normal file
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