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'use strict';
module.exports = options => {
options = Object.assign({
onlyFirst: false
}, options);
const pattern = [
'[\\u001B\\u009B][[\\]()#;?]*(?:(?:(?:[a-zA-Z\\d]*(?:;[-a-zA-Z\\d\\/#&.:=?%@~_]*)*)?\\u0007)',
'(?:(?:\\d{1,4}(?:;\\d{0,4})*)?[\\dA-PR-TZcf-ntqry=><~]))'
].join('|');
return new RegExp(pattern, options.onlyFirst ? undefined : 'g');
};

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MIT License
Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
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": "ansi-regex",
"version": "4.1.0",
"description": "Regular expression for matching ANSI escape codes",
"license": "MIT",
"repository": "chalk/ansi-regex",
"author": {
"name": "Sindre Sorhus",
"email": "sindresorhus@gmail.com",
"url": "sindresorhus.com"
},
"engines": {
"node": ">=6"
},
"scripts": {
"test": "xo && ava",
"view-supported": "node fixtures/view-codes.js"
},
"files": [
"index.js"
],
"keywords": [
"ansi",
"styles",
"color",
"colour",
"colors",
"terminal",
"console",
"cli",
"string",
"tty",
"escape",
"formatting",
"rgb",
"256",
"shell",
"xterm",
"command-line",
"text",
"regex",
"regexp",
"re",
"match",
"test",
"find",
"pattern"
],
"devDependencies": {
"ava": "^0.25.0",
"xo": "^0.23.0"
}
}

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# ansi-regex [![Build Status](https://travis-ci.org/chalk/ansi-regex.svg?branch=master)](https://travis-ci.org/chalk/ansi-regex)
> Regular expression for matching [ANSI escape codes](https://en.wikipedia.org/wiki/ANSI_escape_code)
---
<div align="center">
<b>
<a href="https://tidelift.com/subscription/pkg/npm-ansi-regex?utm_source=npm-ansi-regex&utm_medium=referral&utm_campaign=readme">Get professional support for this package with a Tidelift subscription</a>
</b>
<br>
<sub>
Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies.
</sub>
</div>
---
## Install
```
$ npm install ansi-regex
```
## Usage
```js
const ansiRegex = require('ansi-regex');
ansiRegex().test('\u001B[4mcake\u001B[0m');
//=> true
ansiRegex().test('cake');
//=> false
'\u001B[4mcake\u001B[0m'.match(ansiRegex());
//=> ['\u001B[4m', '\u001B[0m']
'\u001B[4mcake\u001B[0m'.match(ansiRegex({onlyFirst: true}));
//=> ['\u001B[4m']
'\u001B]8;;https://github.com\u0007click\u001B]8;;\u0007'.match(ansiRegex());
//=> ['\u001B]8;;https://github.com\u0007', '\u001B]8;;\u0007']
```
## API
### ansiRegex([options])
Returns a regex for matching ANSI escape codes.
#### options
##### onlyFirst
Type: `boolean`<br>
Default: `false` *(Matches any ANSI escape codes in a string)*
Match only the first ANSI escape.
## FAQ
### Why do you test for codes not in the ECMA 48 standard?
Some of the codes we run as a test are codes that we acquired finding various lists of non-standard or manufacturer specific codes. We test for both standard and non-standard codes, as most of them follow the same or similar format and can be safely matched in strings without the risk of removing actual string content. There are a few non-standard control codes that do not follow the traditional format (i.e. they end in numbers) thus forcing us to exclude them from the test because we cannot reliably match them.
On the historical side, those ECMA standards were established in the early 90's whereas the VT100, for example, was designed in the mid/late 70's. At that point in time, control codes were still pretty ungoverned and engineers used them for a multitude of things, namely to activate hardware ports that may have been proprietary. Somewhere else you see a similar 'anarchy' of codes is in the x86 architecture for processors; there are a ton of "interrupts" that can mean different things on certain brands of processors, most of which have been phased out.
## Security
To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure.
## Maintainers
- [Sindre Sorhus](https://github.com/sindresorhus)
- [Josh Junon](https://github.com/qix-)
## License
MIT

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# Change Log
All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
# [5.0.0](https://github.com/yargs/cliui/compare/v4.1.0...v5.0.0) (2019-04-10)
### Bug Fixes
* Update wrap-ansi to fix compatibility with latest versions of chalk. ([#60](https://github.com/yargs/cliui/issues/60)) ([7bf79ae](https://github.com/yargs/cliui/commit/7bf79ae))
### BREAKING CHANGES
* Drop support for node < 6.
<a name="4.1.0"></a>
# [4.1.0](https://github.com/yargs/cliui/compare/v4.0.0...v4.1.0) (2018-04-23)
### Features
* add resetOutput method ([#57](https://github.com/yargs/cliui/issues/57)) ([7246902](https://github.com/yargs/cliui/commit/7246902))
<a name="4.0.0"></a>
# [4.0.0](https://github.com/yargs/cliui/compare/v3.2.0...v4.0.0) (2017-12-18)
### Bug Fixes
* downgrades strip-ansi to version 3.0.1 ([#54](https://github.com/yargs/cliui/issues/54)) ([5764c46](https://github.com/yargs/cliui/commit/5764c46))
* set env variable FORCE_COLOR. ([#56](https://github.com/yargs/cliui/issues/56)) ([7350e36](https://github.com/yargs/cliui/commit/7350e36))
### Chores
* drop support for node < 4 ([#53](https://github.com/yargs/cliui/issues/53)) ([b105376](https://github.com/yargs/cliui/commit/b105376))
### Features
* add fallback for window width ([#45](https://github.com/yargs/cliui/issues/45)) ([d064922](https://github.com/yargs/cliui/commit/d064922))
### BREAKING CHANGES
* officially drop support for Node < 4
<a name="3.2.0"></a>
# [3.2.0](https://github.com/yargs/cliui/compare/v3.1.2...v3.2.0) (2016-04-11)
### Bug Fixes
* reduces tarball size ([acc6c33](https://github.com/yargs/cliui/commit/acc6c33))
### Features
* adds standard-version for release management ([ff84e32](https://github.com/yargs/cliui/commit/ff84e32))

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Copyright (c) 2015, Contributors
Permission to use, copy, modify, and/or distribute this software
for any purpose with or without fee is hereby granted, provided
that the above copyright notice and this permission notice
appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE
LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

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# cliui
[![Build Status](https://travis-ci.org/yargs/cliui.svg)](https://travis-ci.org/yargs/cliui)
[![Coverage Status](https://coveralls.io/repos/yargs/cliui/badge.svg?branch=)](https://coveralls.io/r/yargs/cliui?branch=)
[![NPM version](https://img.shields.io/npm/v/cliui.svg)](https://www.npmjs.com/package/cliui)
[![Standard Version](https://img.shields.io/badge/release-standard%20version-brightgreen.svg)](https://github.com/conventional-changelog/standard-version)
easily create complex multi-column command-line-interfaces.
## Example
```js
var ui = require('cliui')()
ui.div('Usage: $0 [command] [options]')
ui.div({
text: 'Options:',
padding: [2, 0, 2, 0]
})
ui.div(
{
text: "-f, --file",
width: 20,
padding: [0, 4, 0, 4]
},
{
text: "the file to load." +
chalk.green("(if this description is long it wraps).")
,
width: 20
},
{
text: chalk.red("[required]"),
align: 'right'
}
)
console.log(ui.toString())
```
<img width="500" src="screenshot.png">
## Layout DSL
cliui exposes a simple layout DSL:
If you create a single `ui.div`, passing a string rather than an
object:
* `\n`: characters will be interpreted as new rows.
* `\t`: characters will be interpreted as new columns.
* `\s`: characters will be interpreted as padding.
**as an example...**
```js
var ui = require('./')({
width: 60
})
ui.div(
'Usage: node ./bin/foo.js\n' +
' <regex>\t provide a regex\n' +
' <glob>\t provide a glob\t [required]'
)
console.log(ui.toString())
```
**will output:**
```shell
Usage: node ./bin/foo.js
<regex> provide a regex
<glob> provide a glob [required]
```
## Methods
```js
cliui = require('cliui')
```
### cliui({width: integer})
Specify the maximum width of the UI being generated.
If no width is provided, cliui will try to get the current window's width and use it, and if that doesn't work, width will be set to `80`.
### cliui({wrap: boolean})
Enable or disable the wrapping of text in a column.
### cliui.div(column, column, column)
Create a row with any number of columns, a column
can either be a string, or an object with the following
options:
* **text:** some text to place in the column.
* **width:** the width of a column.
* **align:** alignment, `right` or `center`.
* **padding:** `[top, right, bottom, left]`.
* **border:** should a border be placed around the div?
### cliui.span(column, column, column)
Similar to `div`, except the next row will be appended without
a new line being created.
### cliui.resetOutput()
Resets the UI elements of the current cliui instance, maintaining the values
set for `width` and `wrap`.

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var stringWidth = require('string-width')
var stripAnsi = require('strip-ansi')
var wrap = require('wrap-ansi')
var align = {
right: alignRight,
center: alignCenter
}
var top = 0
var right = 1
var bottom = 2
var left = 3
function UI (opts) {
this.width = opts.width
this.wrap = opts.wrap
this.rows = []
}
UI.prototype.span = function () {
var cols = this.div.apply(this, arguments)
cols.span = true
}
UI.prototype.resetOutput = function () {
this.rows = []
}
UI.prototype.div = function () {
if (arguments.length === 0) this.div('')
if (this.wrap && this._shouldApplyLayoutDSL.apply(this, arguments)) {
return this._applyLayoutDSL(arguments[0])
}
var cols = []
for (var i = 0, arg; (arg = arguments[i]) !== undefined; i++) {
if (typeof arg === 'string') cols.push(this._colFromString(arg))
else cols.push(arg)
}
this.rows.push(cols)
return cols
}
UI.prototype._shouldApplyLayoutDSL = function () {
return arguments.length === 1 && typeof arguments[0] === 'string' &&
/[\t\n]/.test(arguments[0])
}
UI.prototype._applyLayoutDSL = function (str) {
var _this = this
var rows = str.split('\n')
var leftColumnWidth = 0
// simple heuristic for layout, make sure the
// second column lines up along the left-hand.
// don't allow the first column to take up more
// than 50% of the screen.
rows.forEach(function (row) {
var columns = row.split('\t')
if (columns.length > 1 && stringWidth(columns[0]) > leftColumnWidth) {
leftColumnWidth = Math.min(
Math.floor(_this.width * 0.5),
stringWidth(columns[0])
)
}
})
// generate a table:
// replacing ' ' with padding calculations.
// using the algorithmically generated width.
rows.forEach(function (row) {
var columns = row.split('\t')
_this.div.apply(_this, columns.map(function (r, i) {
return {
text: r.trim(),
padding: _this._measurePadding(r),
width: (i === 0 && columns.length > 1) ? leftColumnWidth : undefined
}
}))
})
return this.rows[this.rows.length - 1]
}
UI.prototype._colFromString = function (str) {
return {
text: str,
padding: this._measurePadding(str)
}
}
UI.prototype._measurePadding = function (str) {
// measure padding without ansi escape codes
var noAnsi = stripAnsi(str)
return [0, noAnsi.match(/\s*$/)[0].length, 0, noAnsi.match(/^\s*/)[0].length]
}
UI.prototype.toString = function () {
var _this = this
var lines = []
_this.rows.forEach(function (row, i) {
_this.rowToString(row, lines)
})
// don't display any lines with the
// hidden flag set.
lines = lines.filter(function (line) {
return !line.hidden
})
return lines.map(function (line) {
return line.text
}).join('\n')
}
UI.prototype.rowToString = function (row, lines) {
var _this = this
var padding
var rrows = this._rasterize(row)
var str = ''
var ts
var width
var wrapWidth
rrows.forEach(function (rrow, r) {
str = ''
rrow.forEach(function (col, c) {
ts = '' // temporary string used during alignment/padding.
width = row[c].width // the width with padding.
wrapWidth = _this._negatePadding(row[c]) // the width without padding.
ts += col
for (var i = 0; i < wrapWidth - stringWidth(col); i++) {
ts += ' '
}
// align the string within its column.
if (row[c].align && row[c].align !== 'left' && _this.wrap) {
ts = align[row[c].align](ts, wrapWidth)
if (stringWidth(ts) < wrapWidth) ts += new Array(width - stringWidth(ts)).join(' ')
}
// apply border and padding to string.
padding = row[c].padding || [0, 0, 0, 0]
if (padding[left]) str += new Array(padding[left] + 1).join(' ')
str += addBorder(row[c], ts, '| ')
str += ts
str += addBorder(row[c], ts, ' |')
if (padding[right]) str += new Array(padding[right] + 1).join(' ')
// if prior row is span, try to render the
// current row on the prior line.
if (r === 0 && lines.length > 0) {
str = _this._renderInline(str, lines[lines.length - 1])
}
})
// remove trailing whitespace.
lines.push({
text: str.replace(/ +$/, ''),
span: row.span
})
})
return lines
}
function addBorder (col, ts, style) {
if (col.border) {
if (/[.']-+[.']/.test(ts)) return ''
else if (ts.trim().length) return style
else return ' '
}
return ''
}
// if the full 'source' can render in
// the target line, do so.
UI.prototype._renderInline = function (source, previousLine) {
var leadingWhitespace = source.match(/^ */)[0].length
var target = previousLine.text
var targetTextWidth = stringWidth(target.trimRight())
if (!previousLine.span) return source
// if we're not applying wrapping logic,
// just always append to the span.
if (!this.wrap) {
previousLine.hidden = true
return target + source
}
if (leadingWhitespace < targetTextWidth) return source
previousLine.hidden = true
return target.trimRight() + new Array(leadingWhitespace - targetTextWidth + 1).join(' ') + source.trimLeft()
}
UI.prototype._rasterize = function (row) {
var _this = this
var i
var rrow
var rrows = []
var widths = this._columnWidths(row)
var wrapped
// word wrap all columns, and create
// a data-structure that is easy to rasterize.
row.forEach(function (col, c) {
// leave room for left and right padding.
col.width = widths[c]
if (_this.wrap) wrapped = wrap(col.text, _this._negatePadding(col), { hard: true }).split('\n')
else wrapped = col.text.split('\n')
if (col.border) {
wrapped.unshift('.' + new Array(_this._negatePadding(col) + 3).join('-') + '.')
wrapped.push("'" + new Array(_this._negatePadding(col) + 3).join('-') + "'")
}
// add top and bottom padding.
if (col.padding) {
for (i = 0; i < (col.padding[top] || 0); i++) wrapped.unshift('')
for (i = 0; i < (col.padding[bottom] || 0); i++) wrapped.push('')
}
wrapped.forEach(function (str, r) {
if (!rrows[r]) rrows.push([])
rrow = rrows[r]
for (var i = 0; i < c; i++) {
if (rrow[i] === undefined) rrow.push('')
}
rrow.push(str)
})
})
return rrows
}
UI.prototype._negatePadding = function (col) {
var wrapWidth = col.width
if (col.padding) wrapWidth -= (col.padding[left] || 0) + (col.padding[right] || 0)
if (col.border) wrapWidth -= 4
return wrapWidth
}
UI.prototype._columnWidths = function (row) {
var _this = this
var widths = []
var unset = row.length
var unsetWidth
var remainingWidth = this.width
// column widths can be set in config.
row.forEach(function (col, i) {
if (col.width) {
unset--
widths[i] = col.width
remainingWidth -= col.width
} else {
widths[i] = undefined
}
})
// any unset widths should be calculated.
if (unset) unsetWidth = Math.floor(remainingWidth / unset)
widths.forEach(function (w, i) {
if (!_this.wrap) widths[i] = row[i].width || stringWidth(row[i].text)
else if (w === undefined) widths[i] = Math.max(unsetWidth, _minWidth(row[i]))
})
return widths
}
// calculates the minimum width of
// a column, based on padding preferences.
function _minWidth (col) {
var padding = col.padding || []
var minWidth = 1 + (padding[left] || 0) + (padding[right] || 0)
if (col.border) minWidth += 4
return minWidth
}
function getWindowWidth () {
if (typeof process === 'object' && process.stdout && process.stdout.columns) return process.stdout.columns
}
function alignRight (str, width) {
str = str.trim()
var padding = ''
var strWidth = stringWidth(str)
if (strWidth < width) {
padding = new Array(width - strWidth + 1).join(' ')
}
return padding + str
}
function alignCenter (str, width) {
str = str.trim()
var padding = ''
var strWidth = stringWidth(str.trim())
if (strWidth < width) {
padding = new Array(parseInt((width - strWidth) / 2, 10) + 1).join(' ')
}
return padding + str
}
module.exports = function (opts) {
opts = opts || {}
return new UI({
width: (opts || {}).width || getWindowWidth() || 80,
wrap: typeof opts.wrap === 'boolean' ? opts.wrap : true
})
}

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{
"name": "cliui",
"version": "5.0.0",
"description": "easily create complex multi-column command-line-interfaces",
"main": "index.js",
"scripts": {
"pretest": "standard",
"test": "nyc mocha",
"coverage": "nyc --reporter=text-lcov mocha | coveralls",
"release": "standard-version"
},
"repository": {
"type": "git",
"url": "http://github.com/yargs/cliui.git"
},
"config": {
"blanket": {
"pattern": [
"index.js"
],
"data-cover-never": [
"node_modules",
"test"
],
"output-reporter": "spec"
}
},
"standard": {
"ignore": [
"**/example/**"
],
"globals": [
"it"
]
},
"keywords": [
"cli",
"command-line",
"layout",
"design",
"console",
"wrap",
"table"
],
"author": "Ben Coe <ben@npmjs.com>",
"license": "ISC",
"dependencies": {
"string-width": "^3.1.0",
"strip-ansi": "^5.2.0",
"wrap-ansi": "^5.1.0"
},
"devDependencies": {
"chai": "^4.2.0",
"chalk": "^2.4.2",
"coveralls": "^3.0.3",
"mocha": "^6.0.2",
"nyc": "^13.3.0",
"standard": "^12.0.1",
"standard-version": "^5.0.2"
},
"files": [
"index.js"
],
"engine": {
"node": ">=6"
}
}

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repo_token: SIAeZjKYlHK74rbcFvNHMUzjRiMpflxve

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{
"env": {
"browser": true,
"node": true
},
"rules": {
"no-console": 0,
"no-empty": [1, { "allowEmptyCatch": true }]
},
"extends": "eslint:recommended"
}

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support
test
examples
example
*.sock
dist
yarn.lock
coverage
bower.json

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language: node_js
node_js:
- "6"
- "5"
- "4"
install:
- make node_modules
script:
- make lint
- make test
- make coveralls

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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 occure 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

19
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@ -0,0 +1,19 @@
(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.

50
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@ -0,0 +1,50 @@
# get Makefile directory name: http://stackoverflow.com/a/5982798/376773
THIS_MAKEFILE_PATH:=$(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
THIS_DIR:=$(shell cd $(dir $(THIS_MAKEFILE_PATH));pwd)
# BIN directory
BIN := $(THIS_DIR)/node_modules/.bin
# Path
PATH := node_modules/.bin:$(PATH)
SHELL := /bin/bash
# applications
NODE ?= $(shell which node)
YARN ?= $(shell which yarn)
PKG ?= $(if $(YARN),$(YARN),$(NODE) $(shell which npm))
BROWSERIFY ?= $(NODE) $(BIN)/browserify
.FORCE:
install: node_modules
node_modules: package.json
@NODE_ENV= $(PKG) install
@touch node_modules
lint: .FORCE
eslint browser.js debug.js index.js node.js
test-node: .FORCE
istanbul cover node_modules/mocha/bin/_mocha -- test/**.js
test-browser: .FORCE
mkdir -p dist
@$(BROWSERIFY) \
--standalone debug \
. > dist/debug.js
karma start --single-run
rimraf dist
test: .FORCE
concurrently \
"make test-node" \
"make test-browser"
coveralls:
cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js
.PHONY: all install clean distclean

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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)
A tiny node.js debugging utility modelled after node core's debugging technique.
**Discussion around the V3 API is under way [here](https://github.com/visionmedia/debug/issues/370)**
## 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_:
```js
var debug = require('debug')('http')
, http = require('http')
, name = 'My App';
// fake app
debug('booting %s', 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_:
```js
var debug = require('debug')('worker');
setInterval(function(){
debug('doing some work');
}, 1000);
```
The __DEBUG__ environment variable is then used to enable these based on space or comma-delimited names. Here are some examples:
![debug http and worker](http://f.cl.ly/items/18471z1H402O24072r1J/Screenshot.png)
![debug worker](http://f.cl.ly/items/1X413v1a3M0d3C2c1E0i/Screenshot.png)
#### Windows note
On Windows the environment variable is set using the `set` command.
```cmd
set DEBUG=*,-not_this
```
Note that PowerShell uses different syntax to set environment variables.
```cmd
$env:DEBUG = "*,-not_this"
```
Then, run the program to be debugged as usual.
## 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.
![](http://f.cl.ly/items/2i3h1d3t121M2Z1A3Q0N/Screenshot.png)
When stdout is not a TTY, `Date#toUTCString()` is used, making it more useful for logging the debug information as shown below:
![](http://f.cl.ly/items/112H3i0e0o0P0a2Q2r11/Screenshot.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".
## 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_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);
```
#### Web Inspector Colors
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).
Colored output looks something like:
![](https://cloud.githubusercontent.com/assets/71256/3139768/b98c5fd8-e8ef-11e3-862a-f7253b6f47c6.png)
## Output streams
By default `debug` will log to stderr, however this can be configured per-namespace by overriding the `log` method:
Example _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');
```
## 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) 2014-2016 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",
"repo": "visionmedia/debug",
"description": "small debugging utility",
"version": "2.6.9",
"keywords": [
"debug",
"log",
"debugger"
],
"main": "src/browser.js",
"scripts": [
"src/browser.js",
"src/debug.js"
],
"dependencies": {
"rauchg/ms.js": "0.7.1"
}
}

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// Karma configuration
// Generated on Fri Dec 16 2016 13:09:51 GMT+0000 (UTC)
module.exports = function(config) {
config.set({
// base path that will be used to resolve all patterns (eg. files, exclude)
basePath: '',
// frameworks to use
// available frameworks: https://npmjs.org/browse/keyword/karma-adapter
frameworks: ['mocha', 'chai', 'sinon'],
// list of files / patterns to load in the browser
files: [
'dist/debug.js',
'test/*spec.js'
],
// list of files to exclude
exclude: [
'src/node.js'
],
// preprocess matching files before serving them to the browser
// available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
preprocessors: {
},
// test results reporter to use
// possible values: 'dots', 'progress'
// available reporters: https://npmjs.org/browse/keyword/karma-reporter
reporters: ['progress'],
// web server port
port: 9876,
// enable / disable colors in the output (reporters and logs)
colors: true,
// level of logging
// possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
logLevel: config.LOG_INFO,
// enable / disable watching file and executing tests whenever any file changes
autoWatch: true,
// start these browsers
// available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
browsers: ['PhantomJS'],
// Continuous Integration mode
// if true, Karma captures browsers, runs the tests and exits
singleRun: false,
// Concurrency level
// how many browser should be started simultaneous
concurrency: Infinity
})
}

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module.exports = require('./src/node');

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{
"name": "debug",
"version": "2.6.9",
"repository": {
"type": "git",
"url": "git://github.com/visionmedia/debug.git"
},
"description": "small debugging utility",
"keywords": [
"debug",
"log",
"debugger"
],
"author": "TJ Holowaychuk <tj@vision-media.ca>",
"contributors": [
"Nathan Rajlich <nathan@tootallnate.net> (http://n8.io)",
"Andrew Rhyne <rhyneandrew@gmail.com>"
],
"license": "MIT",
"dependencies": {
"ms": "2.0.0"
},
"devDependencies": {
"browserify": "9.0.3",
"chai": "^3.5.0",
"concurrently": "^3.1.0",
"coveralls": "^2.11.15",
"eslint": "^3.12.1",
"istanbul": "^0.4.5",
"karma": "^1.3.0",
"karma-chai": "^0.1.0",
"karma-mocha": "^1.3.0",
"karma-phantomjs-launcher": "^1.0.2",
"karma-sinon": "^1.0.5",
"mocha": "^3.2.0",
"mocha-lcov-reporter": "^1.2.0",
"rimraf": "^2.5.4",
"sinon": "^1.17.6",
"sinon-chai": "^2.8.0"
},
"main": "./src/index.js",
"browser": "./src/browser.js",
"component": {
"scripts": {
"debug/index.js": "browser.js",
"debug/debug.js": "debug.js"
}
}
}

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/**
* This is the web browser implementation of `debug()`.
*
* Expose `debug()` as the module.
*/
exports = module.exports = require('./debug');
exports.log = log;
exports.formatArgs = formatArgs;
exports.save = save;
exports.load = load;
exports.useColors = useColors;
exports.storage = 'undefined' != typeof chrome
&& 'undefined' != typeof chrome.storage
? chrome.storage.local
: localstorage();
/**
* Colors.
*/
exports.colors = [
'lightseagreen',
'forestgreen',
'goldenrod',
'dodgerblue',
'darkorchid',
'crimson'
];
/**
* 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
*/
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') {
return true;
}
// 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+)/));
}
/**
* Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.
*/
exports.formatters.j = function(v) {
try {
return JSON.stringify(v);
} catch (err) {
return '[UnexpectedJSONParseError]: ' + err.message;
}
};
/**
* Colorize log arguments if enabled.
*
* @api public
*/
function formatArgs(args) {
var useColors = this.useColors;
args[0] = (useColors ? '%c' : '')
+ this.namespace
+ (useColors ? ' %c' : ' ')
+ args[0]
+ (useColors ? '%c ' : ' ')
+ '+' + exports.humanize(this.diff);
if (!useColors) return;
var 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
var index = 0;
var lastC = 0;
args[0].replace(/%[a-zA-Z%]/g, function(match) {
if ('%%' === match) return;
index++;
if ('%c' === match) {
// 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() {
// this hackery is required for IE8/9, where
// the `console.log` function doesn't have 'apply'
return 'object' === typeof console
&& console.log
&& Function.prototype.apply.call(console.log, console, arguments);
}
/**
* Save `namespaces`.
*
* @param {String} namespaces
* @api private
*/
function save(namespaces) {
try {
if (null == namespaces) {
exports.storage.removeItem('debug');
} else {
exports.storage.debug = namespaces;
}
} catch(e) {}
}
/**
* Load `namespaces`.
*
* @return {String} returns the previously persisted debug modes
* @api private
*/
function load() {
var r;
try {
r = exports.storage.debug;
} catch(e) {}
// 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;
}
/**
* Enable namespaces listed in `localStorage.debug` initially.
*/
exports.enable(load());
/**
* 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 {
return window.localStorage;
} catch (e) {}
}

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/**
* This is the common logic for both the Node.js and web browser
* implementations of `debug()`.
*
* Expose `debug()` as the module.
*/
exports = module.exports = createDebug.debug = createDebug['default'] = createDebug;
exports.coerce = coerce;
exports.disable = disable;
exports.enable = enable;
exports.enabled = enabled;
exports.humanize = require('ms');
/**
* The currently active debug mode names, and names to skip.
*/
exports.names = [];
exports.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".
*/
exports.formatters = {};
/**
* Previous log timestamp.
*/
var prevTime;
/**
* Select a color.
* @param {String} namespace
* @return {Number}
* @api private
*/
function selectColor(namespace) {
var hash = 0, i;
for (i in namespace) {
hash = ((hash << 5) - hash) + namespace.charCodeAt(i);
hash |= 0; // Convert to 32bit integer
}
return exports.colors[Math.abs(hash) % exports.colors.length];
}
/**
* Create a debugger with the given `namespace`.
*
* @param {String} namespace
* @return {Function}
* @api public
*/
function createDebug(namespace) {
function debug() {
// disabled?
if (!debug.enabled) return;
var self = debug;
// set `diff` timestamp
var curr = +new Date();
var ms = curr - (prevTime || curr);
self.diff = ms;
self.prev = prevTime;
self.curr = curr;
prevTime = curr;
// turn the `arguments` into a proper Array
var args = new Array(arguments.length);
for (var i = 0; i < args.length; i++) {
args[i] = arguments[i];
}
args[0] = exports.coerce(args[0]);
if ('string' !== typeof args[0]) {
// anything else let's inspect with %O
args.unshift('%O');
}
// apply any `formatters` transformations
var index = 0;
args[0] = args[0].replace(/%([a-zA-Z%])/g, function(match, format) {
// if we encounter an escaped % then don't increase the array index
if (match === '%%') return match;
index++;
var formatter = exports.formatters[format];
if ('function' === typeof formatter) {
var 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.)
exports.formatArgs.call(self, args);
var logFn = debug.log || exports.log || console.log.bind(console);
logFn.apply(self, args);
}
debug.namespace = namespace;
debug.enabled = exports.enabled(namespace);
debug.useColors = exports.useColors();
debug.color = selectColor(namespace);
// env-specific initialization logic for debug instances
if ('function' === typeof exports.init) {
exports.init(debug);
}
return debug;
}
/**
* Enables a debug mode by namespaces. This can include modes
* separated by a colon and wildcards.
*
* @param {String} namespaces
* @api public
*/
function enable(namespaces) {
exports.save(namespaces);
exports.names = [];
exports.skips = [];
var split = (typeof namespaces === 'string' ? namespaces : '').split(/[\s,]+/);
var len = split.length;
for (var i = 0; i < len; i++) {
if (!split[i]) continue; // ignore empty strings
namespaces = split[i].replace(/\*/g, '.*?');
if (namespaces[0] === '-') {
exports.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));
} else {
exports.names.push(new RegExp('^' + namespaces + '$'));
}
}
}
/**
* Disable debug output.
*
* @api public
*/
function disable() {
exports.enable('');
}
/**
* Returns true if the given mode name is enabled, false otherwise.
*
* @param {String} name
* @return {Boolean}
* @api public
*/
function enabled(name) {
var i, len;
for (i = 0, len = exports.skips.length; i < len; i++) {
if (exports.skips[i].test(name)) {
return false;
}
}
for (i = 0, len = exports.names.length; i < len; i++) {
if (exports.names[i].test(name)) {
return true;
}
}
return false;
}
/**
* Coerce `val`.
*
* @param {Mixed} val
* @return {Mixed}
* @api private
*/
function coerce(val) {
if (val instanceof Error) return val.stack || val.message;
return val;
}

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

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module.exports = inspectorLog;
// black hole
const nullStream = new (require('stream').Writable)();
nullStream._write = () => {};
/**
* Outputs a `console.log()` to the Node.js Inspector console *only*.
*/
function inspectorLog() {
const stdout = console._stdout;
console._stdout = nullStream;
console.log.apply(console, arguments);
console._stdout = stdout;
}

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/**
* Module dependencies.
*/
var tty = require('tty');
var util = require('util');
/**
* This is the Node.js implementation of `debug()`.
*
* Expose `debug()` as the module.
*/
exports = module.exports = require('./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];
/**
* 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(function (key) {
return /^debug_/i.test(key);
}).reduce(function (obj, key) {
// camel-case
var prop = key
.substring(6)
.toLowerCase()
.replace(/_([a-z])/g, function (_, k) { return k.toUpperCase() });
// coerce string value into JS value
var 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;
}, {});
/**
* The file descriptor to write the `debug()` calls to.
* Set the `DEBUG_FD` env variable to override with another value. i.e.:
*
* $ DEBUG_FD=3 node script.js 3>debug.log
*/
var fd = parseInt(process.env.DEBUG_FD, 10) || 2;
if (1 !== fd && 2 !== fd) {
util.deprecate(function(){}, 'except for stderr(2) and stdout(1), any other usage of DEBUG_FD is deprecated. Override debug.log if you want to use a different log function (https://git.io/debug_fd)')()
}
var stream = 1 === fd ? process.stdout :
2 === fd ? process.stderr :
createWritableStdioStream(fd);
/**
* Is stdout a TTY? Colored output is enabled when `true`.
*/
function useColors() {
return 'colors' in exports.inspectOpts
? Boolean(exports.inspectOpts.colors)
: tty.isatty(fd);
}
/**
* Map %o to `util.inspect()`, all on a single line.
*/
exports.formatters.o = function(v) {
this.inspectOpts.colors = this.useColors;
return util.inspect(v, this.inspectOpts)
.split('\n').map(function(str) {
return str.trim()
}).join(' ');
};
/**
* Map %o to `util.inspect()`, allowing multiple lines if needed.
*/
exports.formatters.O = function(v) {
this.inspectOpts.colors = this.useColors;
return util.inspect(v, this.inspectOpts);
};
/**
* Adds ANSI color escape codes if enabled.
*
* @api public
*/
function formatArgs(args) {
var name = this.namespace;
var useColors = this.useColors;
if (useColors) {
var c = this.color;
var prefix = ' \u001b[3' + c + ';1m' + name + ' ' + '\u001b[0m';
args[0] = prefix + args[0].split('\n').join('\n' + prefix);
args.push('\u001b[3' + c + 'm+' + exports.humanize(this.diff) + '\u001b[0m');
} else {
args[0] = new Date().toUTCString()
+ ' ' + name + ' ' + args[0];
}
}
/**
* Invokes `util.format()` with the specified arguments and writes to `stream`.
*/
function log() {
return stream.write(util.format.apply(util, arguments) + '\n');
}
/**
* Save `namespaces`.
*
* @param {String} namespaces
* @api private
*/
function save(namespaces) {
if (null == namespaces) {
// 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;
} else {
process.env.DEBUG = namespaces;
}
}
/**
* Load `namespaces`.
*
* @return {String} returns the previously persisted debug modes
* @api private
*/
function load() {
return process.env.DEBUG;
}
/**
* Copied from `node/src/node.js`.
*
* XXX: It's lame that node doesn't expose this API out-of-the-box. It also
* relies on the undocumented `tty_wrap.guessHandleType()` which is also lame.
*/
function createWritableStdioStream (fd) {
var stream;
var tty_wrap = process.binding('tty_wrap');
// Note stream._type is used for test-module-load-list.js
switch (tty_wrap.guessHandleType(fd)) {
case 'TTY':
stream = new tty.WriteStream(fd);
stream._type = 'tty';
// Hack to have stream not keep the event loop alive.
// See https://github.com/joyent/node/issues/1726
if (stream._handle && stream._handle.unref) {
stream._handle.unref();
}
break;
case 'FILE':
var fs = require('fs');
stream = new fs.SyncWriteStream(fd, { autoClose: false });
stream._type = 'fs';
break;
case 'PIPE':
case 'TCP':
var net = require('net');
stream = new net.Socket({
fd: fd,
readable: false,
writable: true
});
// FIXME Should probably have an option in net.Socket to create a
// stream from an existing fd which is writable only. But for now
// we'll just add this hack and set the `readable` member to false.
// Test: ./node test/fixtures/echo.js < /etc/passwd
stream.readable = false;
stream.read = null;
stream._type = 'pipe';
// FIXME Hack to have stream not keep the event loop alive.
// See https://github.com/joyent/node/issues/1726
if (stream._handle && stream._handle.unref) {
stream._handle.unref();
}
break;
default:
// Probably an error on in uv_guess_handle()
throw new Error('Implement me. Unknown stream file type!');
}
// For supporting legacy API we put the FD here.
stream.fd = fd;
stream._isStdio = true;
return stream;
}
/**
* 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 = {};
var keys = Object.keys(exports.inspectOpts);
for (var i = 0; i < keys.length; i++) {
debug.inspectOpts[keys[i]] = exports.inspectOpts[keys[i]];
}
}
/**
* Enable namespaces listed in `process.env.DEBUG` initially.
*/
exports.enable(load());

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Copyright Mathias Bynens <https://mathiasbynens.be/>
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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# emoji-regex [![Build status](https://travis-ci.org/mathiasbynens/emoji-regex.svg?branch=master)](https://travis-ci.org/mathiasbynens/emoji-regex)
_emoji-regex_ offers a regular expression to match all emoji symbols (including textual representations of emoji) as per the Unicode Standard.
This repository contains a script that generates this regular expression based on [the data from Unicode Technical Report #51](https://github.com/mathiasbynens/unicode-tr51). Because of this, the regular expression can easily be updated whenever new emoji are added to the Unicode standard.
## Installation
Via [npm](https://www.npmjs.com/):
```bash
npm install emoji-regex
```
In [Node.js](https://nodejs.org/):
```js
const emojiRegex = require('emoji-regex');
// Note: because the regular expression has the global flag set, this module
// exports a function that returns the regex rather than exporting the regular
// expression itself, to make it impossible to (accidentally) mutate the
// original regular expression.
const text = `
\u{231A}: ⌚ default emoji presentation character (Emoji_Presentation)
\u{2194}\u{FE0F}: ↔️ default text presentation character rendered as emoji
\u{1F469}: 👩 emoji modifier base (Emoji_Modifier_Base)
\u{1F469}\u{1F3FF}: 👩🏿 emoji modifier base followed by a modifier
`;
const regex = emojiRegex();
let match;
while (match = regex.exec(text)) {
const emoji = match[0];
console.log(`Matched sequence ${ emoji } — code points: ${ [...emoji].length }`);
}
```
Console output:
```
Matched sequence ⌚ — code points: 1
Matched sequence ⌚ — code points: 1
Matched sequence ↔️ — code points: 2
Matched sequence ↔️ — code points: 2
Matched sequence 👩 — code points: 1
Matched sequence 👩 — code points: 1
Matched sequence 👩🏿 — code points: 2
Matched sequence 👩🏿 — code points: 2
```
To match emoji in their textual representation as well (i.e. emoji that are not `Emoji_Presentation` symbols and that aren’t forced to render as emoji by a variation selector), `require` the other regex:
```js
const emojiRegex = require('emoji-regex/text.js');
```
Additionally, in environments which support ES2015 Unicode escapes, you may `require` ES2015-style versions of the regexes:
```js
const emojiRegex = require('emoji-regex/es2015/index.js');
const emojiRegexText = require('emoji-regex/es2015/text.js');
```
## Author
| [![twitter/mathias](https://gravatar.com/avatar/24e08a9ea84deb17ae121074d0f17125?s=70)](https://twitter.com/mathias "Follow @mathias on Twitter") |
|---|
| [Mathias Bynens](https://mathiasbynens.be/) |
## License
_emoji-regex_ is available under the [MIT](https://mths.be/mit) license.

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declare module 'emoji-regex' {
function emojiRegex(): RegExp;
export default emojiRegex;
}

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{
"name": "emoji-regex",
"version": "7.0.3",
"description": "A regular expression to match all Emoji-only symbols as per the Unicode Standard.",
"homepage": "https://mths.be/emoji-regex",
"main": "index.js",
"types": "index.d.ts",
"keywords": [
"unicode",
"regex",
"regexp",
"regular expressions",
"code points",
"symbols",
"characters",
"emoji"
],
"license": "MIT",
"author": {
"name": "Mathias Bynens",
"url": "https://mathiasbynens.be/"
},
"repository": {
"type": "git",
"url": "https://github.com/mathiasbynens/emoji-regex.git"
},
"bugs": "https://github.com/mathiasbynens/emoji-regex/issues",
"files": [
"LICENSE-MIT.txt",
"index.js",
"index.d.ts",
"text.js",
"es2015/index.js",
"es2015/text.js"
],
"scripts": {
"build": "rm -rf -- es2015; babel src -d .; NODE_ENV=es2015 babel src -d ./es2015; node script/inject-sequences.js",
"test": "mocha",
"test:watch": "npm run test -- --watch"
},
"devDependencies": {
"@babel/cli": "^7.0.0",
"@babel/core": "^7.0.0",
"@babel/plugin-proposal-unicode-property-regex": "^7.0.0",
"@babel/preset-env": "^7.0.0",
"mocha": "^5.2.0",
"regexgen": "^1.3.0",
"unicode-11.0.0": "^0.7.7",
"unicode-tr51": "^9.0.1"
}
}

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'use strict';
const path = require('path');
const locatePath = require('locate-path');
module.exports = (filename, opts = {}) => {
const startDir = path.resolve(opts.cwd || '');
const {root} = path.parse(startDir);
const filenames = [].concat(filename);
return new Promise(resolve => {
(function find(dir) {
locatePath(filenames, {cwd: dir}).then(file => {
if (file) {
resolve(path.join(dir, file));
} else if (dir === root) {
resolve(null);
} else {
find(path.dirname(dir));
}
});
})(startDir);
});
};
module.exports.sync = (filename, opts = {}) => {
let dir = path.resolve(opts.cwd || '');
const {root} = path.parse(dir);
const filenames = [].concat(filename);
// eslint-disable-next-line no-constant-condition
while (true) {
const file = locatePath.sync(filenames, {cwd: dir});
if (file) {
return path.join(dir, file);
}
if (dir === root) {
return null;
}
dir = path.dirname(dir);
}
};

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MIT License
Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
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": "find-up",
"version": "3.0.0",
"description": "Find a file or directory by walking up parent directories",
"license": "MIT",
"repository": "sindresorhus/find-up",
"author": {
"name": "Sindre Sorhus",
"email": "sindresorhus@gmail.com",
"url": "sindresorhus.com"
},
"engines": {
"node": ">=6"
},
"scripts": {
"test": "xo && ava"
},
"files": [
"index.js"
],
"keywords": [
"find",
"up",
"find-up",
"findup",
"look-up",
"look",
"file",
"search",
"match",
"package",
"resolve",
"parent",
"parents",
"folder",
"directory",
"dir",
"walk",
"walking",
"path"
],
"dependencies": {
"locate-path": "^3.0.0"
},
"devDependencies": {
"ava": "*",
"tempy": "^0.2.1",
"xo": "*"
}
}

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# find-up [![Build Status: Linux and macOS](https://travis-ci.org/sindresorhus/find-up.svg?branch=master)](https://travis-ci.org/sindresorhus/find-up) [![Build Status: Windows](https://ci.appveyor.com/api/projects/status/l0cyjmvh5lq72vq2/branch/master?svg=true)](https://ci.appveyor.com/project/sindresorhus/find-up/branch/master)
> Find a file or directory by walking up parent directories
## Install
```
$ npm install find-up
```
## Usage
```
/
└── Users
└── sindresorhus
├── unicorn.png
└── foo
└── bar
├── baz
└── example.js
```
`example.js`
```js
const findUp = require('find-up');
(async () => {
console.log(await findUp('unicorn.png'));
//=> '/Users/sindresorhus/unicorn.png'
console.log(await findUp(['rainbow.png', 'unicorn.png']));
//=> '/Users/sindresorhus/unicorn.png'
})();
```
## API
### findUp(filename, [options])
Returns a `Promise` for either the filepath or `null` if it couldn't be found.
### findUp([filenameA, filenameB], [options])
Returns a `Promise` for either the first filepath found (by respecting the order) or `null` if none could be found.
### findUp.sync(filename, [options])
Returns a filepath or `null`.
### findUp.sync([filenameA, filenameB], [options])
Returns the first filepath found (by respecting the order) or `null`.
#### filename
Type: `string`
Filename of the file to find.
#### options
Type: `Object`
##### cwd
Type: `string`<br>
Default: `process.cwd()`
Directory to start from.
## Related
- [find-up-cli](https://github.com/sindresorhus/find-up-cli) - CLI for this module
- [pkg-up](https://github.com/sindresorhus/pkg-up) - Find the closest package.json file
- [pkg-dir](https://github.com/sindresorhus/pkg-dir) - Find the root directory of an npm package
- [resolve-from](https://github.com/sindresorhus/resolve-from) - Resolve the path of a module like `require.resolve()` but from a given path
## License
MIT © [Sindre Sorhus](https://sindresorhus.com)

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'use strict';
const path = require('path');
const pathExists = require('path-exists');
const pLocate = require('p-locate');
module.exports = (iterable, options) => {
options = Object.assign({
cwd: process.cwd()
}, options);
return pLocate(iterable, el => pathExists(path.resolve(options.cwd, el)), options);
};
module.exports.sync = (iterable, options) => {
options = Object.assign({
cwd: process.cwd()
}, options);
for (const el of iterable) {
if (pathExists.sync(path.resolve(options.cwd, el))) {
return el;
}
}
};

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MIT License
Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
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": "locate-path",
"version": "3.0.0",
"description": "Get the first path that exists on disk of multiple paths",
"license": "MIT",
"repository": "sindresorhus/locate-path",
"author": {
"name": "Sindre Sorhus",
"email": "sindresorhus@gmail.com",
"url": "sindresorhus.com"
},
"engines": {
"node": ">=6"
},
"scripts": {
"test": "xo && ava"
},
"files": [
"index.js"
],
"keywords": [
"locate",
"path",
"paths",
"file",
"files",
"exists",
"find",
"finder",
"search",
"searcher",
"array",
"iterable",
"iterator"
],
"dependencies": {
"p-locate": "^3.0.0",
"path-exists": "^3.0.0"
},
"devDependencies": {
"ava": "*",
"xo": "*"
}
}

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# locate-path [![Build Status](https://travis-ci.org/sindresorhus/locate-path.svg?branch=master)](https://travis-ci.org/sindresorhus/locate-path)
> Get the first path that exists on disk of multiple paths
## Install
```
$ npm install locate-path
```
## Usage
Here we find the first file that exists on disk, in array order.
```js
const locatePath = require('locate-path');
const files = [
'unicorn.png',
'rainbow.png', // Only this one actually exists on disk
'pony.png'
];
(async () => {
console(await locatePath(files));
//=> 'rainbow'
})();
```
## API
### locatePath(input, [options])
Returns a `Promise` for the first path that exists or `undefined` if none exists.
#### input
Type: `Iterable<string>`
Paths to check.
#### options
Type: `Object`
##### concurrency
Type: `number`<br>
Default: `Infinity`<br>
Minimum: `1`
Number of concurrently pending promises.
##### preserveOrder
Type: `boolean`<br>
Default: `true`
Preserve `input` order when searching.
Disable this to improve performance if you don't care about the order.
##### cwd
Type: `string`<br>
Default: `process.cwd()`
Current working directory.
### locatePath.sync(input, [options])
Returns the first path that exists or `undefined` if none exists.
#### input
Type: `Iterable<string>`
Paths to check.
#### options
Type: `Object`
##### cwd
Same as above.
## Related
- [path-exists](https://github.com/sindresorhus/path-exists) - Check if a path exists
## License
MIT © [Sindre Sorhus](https://sindresorhus.com)

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/**
* Helpers.
*/
var s = 1000;
var m = s * 60;
var h = m * 60;
var d = h * 24;
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' && isNaN(val) === false) {
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|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 '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) {
if (ms >= d) {
return Math.round(ms / d) + 'd';
}
if (ms >= h) {
return Math.round(ms / h) + 'h';
}
if (ms >= m) {
return Math.round(ms / m) + 'm';
}
if (ms >= s) {
return Math.round(ms / s) + 's';
}
return ms + 'ms';
}
/**
* Long format for `ms`.
*
* @param {Number} ms
* @return {String}
* @api private
*/
function fmtLong(ms) {
return plural(ms, d, 'day') ||
plural(ms, h, 'hour') ||
plural(ms, m, 'minute') ||
plural(ms, s, 'second') ||
ms + ' ms';
}
/**
* Pluralization helper.
*/
function plural(ms, n, name) {
if (ms < n) {
return;
}
if (ms < n * 1.5) {
return Math.floor(ms / n) + ' ' + name;
}
return Math.ceil(ms / n) + ' ' + name + 's';
}

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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.

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{
"name": "ms",
"version": "2.0.0",
"description": "Tiny milisecond 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": "3.19.0",
"expect.js": "0.3.1",
"husky": "0.13.3",
"lint-staged": "3.4.1",
"mocha": "3.4.1"
}
}

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# ms
[![Build Status](https://travis-ci.org/zeit/ms.svg?branch=master)](https://travis-ci.org/zeit/ms)
[![Slack Channel](http://zeit-slackin.now.sh/badge.svg)](https://zeit.chat/)
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
```
### Convert from milliseconds
```js
ms(60000) // "1m"
ms(2 * 60000) // "2m"
ms(ms('10 hours')) // "10h"
```
### Time format written-out
```js
ms(60000, { long: true }) // "1 minute"
ms(2 * 60000, { long: true }) // "2 minutes"
ms(ms('10 hours'), { long: true }) // "10 hours"
```
## Features
- Works both in [node](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 ms is returned.
## 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 will now use your clone of ms!
As always, you can run the tests using: `npm test`

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'use strict';
const pLimit = require('p-limit');
class EndError extends Error {
constructor(value) {
super();
this.value = value;
}
}
// The input can also be a promise, so we `Promise.resolve()` it
const testElement = (el, tester) => Promise.resolve(el).then(tester);
// The input can also be a promise, so we `Promise.all()` them both
const finder = el => Promise.all(el).then(val => val[1] === true && Promise.reject(new EndError(val[0])));
module.exports = (iterable, tester, opts) => {
opts = Object.assign({
concurrency: Infinity,
preserveOrder: true
}, opts);
const limit = pLimit(opts.concurrency);
// Start all the promises concurrently with optional limit
const items = [...iterable].map(el => [el, limit(testElement, el, tester)]);
// Check the promises either serially or concurrently
const checkLimit = pLimit(opts.preserveOrder ? 1 : Infinity);
return Promise.all(items.map(el => checkLimit(finder, el)))
.then(() => {})
.catch(err => err instanceof EndError ? err.value : Promise.reject(err));
};

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MIT License
Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
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": "p-locate",
"version": "3.0.0",
"description": "Get the first fulfilled promise that satisfies the provided testing function",
"license": "MIT",
"repository": "sindresorhus/p-locate",
"author": {
"name": "Sindre Sorhus",
"email": "sindresorhus@gmail.com",
"url": "sindresorhus.com"
},
"engines": {
"node": ">=6"
},
"scripts": {
"test": "xo && ava"
},
"files": [
"index.js"
],
"keywords": [
"promise",
"locate",
"find",
"finder",
"search",
"searcher",
"test",
"array",
"collection",
"iterable",
"iterator",
"race",
"fulfilled",
"fastest",
"async",
"await",
"promises",
"bluebird"
],
"dependencies": {
"p-limit": "^2.0.0"
},
"devDependencies": {
"ava": "*",
"delay": "^3.0.0",
"in-range": "^1.0.0",
"time-span": "^2.0.0",
"xo": "*"
}
}

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# p-locate [![Build Status](https://travis-ci.org/sindresorhus/p-locate.svg?branch=master)](https://travis-ci.org/sindresorhus/p-locate)
> Get the first fulfilled promise that satisfies the provided testing function
Think of it like an async version of [`Array#find`](https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Array/find).
## Install
```
$ npm install p-locate
```
## Usage
Here we find the first file that exists on disk, in array order.
```js
const pathExists = require('path-exists');
const pLocate = require('p-locate');
const files = [
'unicorn.png',
'rainbow.png', // Only this one actually exists on disk
'pony.png'
];
(async () => {
const foundPath = await pLocate(files, file => pathExists(file));
console.log(foundPath);
//=> 'rainbow'
})();
```
*The above is just an example. Use [`locate-path`](https://github.com/sindresorhus/locate-path) if you need this.*
## API
### pLocate(input, tester, [options])
Returns a `Promise` that is fulfilled when `tester` resolves to `true` or the iterable is done, or rejects if any of the promises reject. The fulfilled value is the current iterable value or `undefined` if `tester` never resolved to `true`.
#### input
Type: `Iterable<Promise|any>`
#### tester(element)
Type: `Function`
Expected to return a `Promise<boolean>` or boolean.
#### options
Type: `Object`
##### concurrency
Type: `number`<br>
Default: `Infinity`<br>
Minimum: `1`
Number of concurrently pending promises returned by `tester`.
##### preserveOrder
Type: `boolean`<br>
Default: `true`
Preserve `input` order when searching.
Disable this to improve performance if you don't care about the order.
## Related
- [p-map](https://github.com/sindresorhus/p-map) - Map over promises concurrently
- [p-filter](https://github.com/sindresorhus/p-filter) - Filter promises concurrently
- [p-any](https://github.com/sindresorhus/p-any) - Wait for any promise to be fulfilled
- [More…](https://github.com/sindresorhus/promise-fun)
## License
MIT © [Sindre Sorhus](https://sindresorhus.com)

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'use strict';
const stripAnsi = require('strip-ansi');
const isFullwidthCodePoint = require('is-fullwidth-code-point');
const emojiRegex = require('emoji-regex')();
module.exports = input => {
input = input.replace(emojiRegex, ' ');
if (typeof input !== 'string' || input.length === 0) {
return 0;
}
input = stripAnsi(input);
let width = 0;
for (let i = 0; i < input.length; i++) {
const code = input.codePointAt(i);
// Ignore control characters
if (code <= 0x1F || (code >= 0x7F && code <= 0x9F)) {
continue;
}
// Ignore combining characters
if (code >= 0x300 && code <= 0x36F) {
continue;
}
// Surrogates
if (code > 0xFFFF) {
i++;
}
width += isFullwidthCodePoint(code) ? 2 : 1;
}
return width;
};

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MIT License
Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
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": "string-width",
"version": "3.1.0",
"description": "Get the visual width of a string - the number of columns required to display it",
"license": "MIT",
"repository": "sindresorhus/string-width",
"author": {
"name": "Sindre Sorhus",
"email": "sindresorhus@gmail.com",
"url": "sindresorhus.com"
},
"engines": {
"node": ">=6"
},
"scripts": {
"test": "xo && ava"
},
"files": [
"index.js"
],
"keywords": [
"string",
"str",
"character",
"char",
"unicode",
"width",
"visual",
"column",
"columns",
"fullwidth",
"full-width",
"full",
"ansi",
"escape",
"codes",
"cli",
"command-line",
"terminal",
"console",
"cjk",
"chinese",
"japanese",
"korean",
"fixed-width"
],
"dependencies": {
"emoji-regex": "^7.0.1",
"is-fullwidth-code-point": "^2.0.0",
"strip-ansi": "^5.1.0"
},
"devDependencies": {
"ava": "^1.0.1",
"xo": "^0.23.0"
}
}

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# string-width [![Build Status](https://travis-ci.org/sindresorhus/string-width.svg?branch=master)](https://travis-ci.org/sindresorhus/string-width)
> Get the visual width of a string - the number of columns required to display it
Some Unicode characters are [fullwidth](https://en.wikipedia.org/wiki/Halfwidth_and_fullwidth_forms) and use double the normal width. [ANSI escape codes](https://en.wikipedia.org/wiki/ANSI_escape_code) are stripped and doesn't affect the width.
Useful to be able to measure the actual width of command-line output.
## Install
```
$ npm install string-width
```
## Usage
```js
const stringWidth = require('string-width');
stringWidth('古');
//=> 2
stringWidth('\u001b[1m古\u001b[22m');
//=> 2
stringWidth('a');
//=> 1
stringWidth('\u001B]8;;https://github.com\u0007Click\u001B]8;;\u0007');
// => 5
```
## Related
- [string-width-cli](https://github.com/sindresorhus/string-width-cli) - CLI for this module
- [string-length](https://github.com/sindresorhus/string-length) - Get the real length of a string
- [widest-line](https://github.com/sindresorhus/widest-line) - Get the visual width of the widest line in a string
## License
MIT © [Sindre Sorhus](https://sindresorhus.com)

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/**
Strip [ANSI escape codes](https://en.wikipedia.org/wiki/ANSI_escape_code) from a string.
@example
```
import stripAnsi from 'strip-ansi';
stripAnsi('\u001B[4mUnicorn\u001B[0m');
//=> 'Unicorn'
stripAnsi('\u001B]8;;https://github.com\u0007Click\u001B]8;;\u0007');
//=> 'Click'
```
*/
export default function stripAnsi(string: string): string;

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'use strict';
const ansiRegex = require('ansi-regex');
const stripAnsi = string => typeof string === 'string' ? string.replace(ansiRegex(), '') : string;
module.exports = stripAnsi;
module.exports.default = stripAnsi;

9
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MIT License
Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
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": "strip-ansi",
"version": "5.2.0",
"description": "Strip ANSI escape codes from a string",
"license": "MIT",
"repository": "chalk/strip-ansi",
"author": {
"name": "Sindre Sorhus",
"email": "sindresorhus@gmail.com",
"url": "sindresorhus.com"
},
"engines": {
"node": ">=6"
},
"scripts": {
"test": "xo && ava && tsd-check"
},
"files": [
"index.js",
"index.d.ts"
],
"keywords": [
"strip",
"trim",
"remove",
"ansi",
"styles",
"color",
"colour",
"colors",
"terminal",
"console",
"string",
"tty",
"escape",
"formatting",
"rgb",
"256",
"shell",
"xterm",
"log",
"logging",
"command-line",
"text"
],
"dependencies": {
"ansi-regex": "^4.1.0"
},
"devDependencies": {
"ava": "^1.3.1",
"tsd-check": "^0.5.0",
"xo": "^0.24.0"
}
}

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# strip-ansi [![Build Status](https://travis-ci.org/chalk/strip-ansi.svg?branch=master)](https://travis-ci.org/chalk/strip-ansi)
> Strip [ANSI escape codes](https://en.wikipedia.org/wiki/ANSI_escape_code) from a string
---
<div align="center">
<b>
<a href="https://tidelift.com/subscription/pkg/npm-strip-ansi?utm_source=npm-strip-ansi&utm_medium=referral&utm_campaign=readme">Get professional support for 'strip-ansi' with a Tidelift subscription</a>
</b>
<br>
<sub>
Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies.
</sub>
</div>
---
## Install
```
$ npm install strip-ansi
```
## Usage
```js
const stripAnsi = require('strip-ansi');
stripAnsi('\u001B[4mUnicorn\u001B[0m');
//=> 'Unicorn'
stripAnsi('\u001B]8;;https://github.com\u0007Click\u001B]8;;\u0007');
//=> 'Click'
```
## Security
To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure.
## Related
- [strip-ansi-cli](https://github.com/chalk/strip-ansi-cli) - CLI for this module
- [strip-ansi-stream](https://github.com/chalk/strip-ansi-stream) - Streaming version of this module
- [has-ansi](https://github.com/chalk/has-ansi) - Check if a string has ANSI escape codes
- [ansi-regex](https://github.com/chalk/ansi-regex) - Regular expression for matching ANSI escape codes
- [chalk](https://github.com/chalk/chalk) - Terminal string styling done right
## Maintainers
- [Sindre Sorhus](https://github.com/sindresorhus)
- [Josh Junon](https://github.com/qix-)
## License
MIT

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'use strict';
const stringWidth = require('string-width');
const stripAnsi = require('strip-ansi');
const ansiStyles = require('ansi-styles');
const ESCAPES = new Set([
'\u001B',
'\u009B'
]);
const END_CODE = 39;
const wrapAnsi = code => `${ESCAPES.values().next().value}[${code}m`;
// Calculate the length of words split on ' ', ignoring
// the extra characters added by ansi escape codes
const wordLengths = string => string.split(' ').map(character => stringWidth(character));
// Wrap a long word across multiple rows
// Ansi escape codes do not count towards length
const wrapWord = (rows, word, columns) => {
const characters = [...word];
let insideEscape = false;
let visible = stringWidth(stripAnsi(rows[rows.length - 1]));
for (const [index, character] of characters.entries()) {
const characterLength = stringWidth(character);
if (visible + characterLength <= columns) {
rows[rows.length - 1] += character;
} else {
rows.push(character);
visible = 0;
}
if (ESCAPES.has(character)) {
insideEscape = true;
} else if (insideEscape && character === 'm') {
insideEscape = false;
continue;
}
if (insideEscape) {
continue;
}
visible += characterLength;
if (visible === columns && index < characters.length - 1) {
rows.push('');
visible = 0;
}
}
// It's possible that the last row we copy over is only
// ansi escape characters, handle this edge-case
if (!visible && rows[rows.length - 1].length > 0 && rows.length > 1) {
rows[rows.length - 2] += rows.pop();
}
};
// Trims spaces from a string ignoring invisible sequences
const stringVisibleTrimSpacesRight = str => {
const words = str.split(' ');
let last = words.length;
while (last > 0) {
if (stringWidth(words[last - 1]) > 0) {
break;
}
last--;
}
if (last === words.length) {
return str;
}
return words.slice(0, last).join(' ') + words.slice(last).join('');
};
// The wrap-ansi module can be invoked
// in either 'hard' or 'soft' wrap mode
//
// 'hard' will never allow a string to take up more
// than columns characters
//
// 'soft' allows long words to expand past the column length
const exec = (string, columns, options = {}) => {
if (options.trim !== false && string.trim() === '') {
return '';
}
let pre = '';
let ret = '';
let escapeCode;
const lengths = wordLengths(string);
let rows = [''];
for (const [index, word] of string.split(' ').entries()) {
if (options.trim !== false) {
rows[rows.length - 1] = rows[rows.length - 1].trimLeft();
}
let rowLength = stringWidth(rows[rows.length - 1]);
if (index !== 0) {
if (rowLength >= columns && (options.wordWrap === false || options.trim === false)) {
// If we start with a new word but the current row length equals the length of the columns, add a new row
rows.push('');
rowLength = 0;
}
if (rowLength > 0 || options.trim === false) {
rows[rows.length - 1] += ' ';
rowLength++;
}
}
// In 'hard' wrap mode, the length of a line is
// never allowed to extend past 'columns'
if (options.hard && lengths[index] > columns) {
const remainingColumns = (columns - rowLength);
const breaksStartingThisLine = 1 + Math.floor((lengths[index] - remainingColumns - 1) / columns);
const breaksStartingNextLine = Math.floor((lengths[index] - 1) / columns);
if (breaksStartingNextLine < breaksStartingThisLine) {
rows.push('');
}
wrapWord(rows, word, columns);
continue;
}
if (rowLength + lengths[index] > columns && rowLength > 0 && lengths[index] > 0) {
if (options.wordWrap === false && rowLength < columns) {
wrapWord(rows, word, columns);
continue;
}
rows.push('');
}
if (rowLength + lengths[index] > columns && options.wordWrap === false) {
wrapWord(rows, word, columns);
continue;
}
rows[rows.length - 1] += word;
}
if (options.trim !== false) {
rows = rows.map(stringVisibleTrimSpacesRight);
}
pre = rows.join('\n');
for (const [index, character] of [...pre].entries()) {
ret += character;
if (ESCAPES.has(character)) {
const code = parseFloat(/\d[^m]*/.exec(pre.slice(index, index + 4)));
escapeCode = code === END_CODE ? null : code;
}
const code = ansiStyles.codes.get(Number(escapeCode));
if (escapeCode && code) {
if (pre[index + 1] === '\n') {
ret += wrapAnsi(code);
} else if (character === '\n') {
ret += wrapAnsi(escapeCode);
}
}
}
return ret;
};
// For each newline, invoke the method separately
module.exports = (string, columns, options) => {
return String(string)
.normalize()
.split('\n')
.map(line => exec(line, columns, options))
.join('\n');
};

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MIT License
Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
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": "wrap-ansi",
"version": "5.1.0",
"description": "Wordwrap a string with ANSI escape codes",
"license": "MIT",
"repository": "chalk/wrap-ansi",
"author": {
"name": "Sindre Sorhus",
"email": "sindresorhus@gmail.com",
"url": "sindresorhus.com"
},
"engines": {
"node": ">=6"
},
"scripts": {
"test": "xo && nyc ava"
},
"files": [
"index.js"
],
"keywords": [
"wrap",
"break",
"wordwrap",
"wordbreak",
"linewrap",
"ansi",
"styles",
"color",
"colour",
"colors",
"terminal",
"console",
"cli",
"string",
"tty",
"escape",
"formatting",
"rgb",
"256",
"shell",
"xterm",
"log",
"logging",
"command-line",
"text"
],
"dependencies": {
"ansi-styles": "^3.2.0",
"string-width": "^3.0.0",
"strip-ansi": "^5.0.0"
},
"devDependencies": {
"ava": "^1.2.1",
"chalk": "^2.4.2",
"coveralls": "^3.0.3",
"has-ansi": "^3.0.0",
"nyc": "^13.3.0",
"xo": "^0.24.0"
}
}

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# wrap-ansi [![Build Status](https://travis-ci.org/chalk/wrap-ansi.svg?branch=master)](https://travis-ci.org/chalk/wrap-ansi) [![Coverage Status](https://coveralls.io/repos/github/chalk/wrap-ansi/badge.svg?branch=master)](https://coveralls.io/github/chalk/wrap-ansi?branch=master)
> Wordwrap a string with [ANSI escape codes](https://en.wikipedia.org/wiki/ANSI_escape_code#Colors_and_Styles)
## Install
```
$ npm install wrap-ansi
```
## Usage
```js
const chalk = require('chalk');
const wrapAnsi = require('wrap-ansi');
const input = 'The quick brown ' + chalk.red('fox jumped over ') +
'the lazy ' + chalk.green('dog and then ran away with the unicorn.');
console.log(wrapAnsi(input, 20));
```
<img width="331" src="screenshot.png">
---
<div align="center">
<b>
<a href="https://tidelift.com/subscription/pkg/npm-wrap_ansi?utm_source=npm-wrap-ansi&utm_medium=referral&utm_campaign=readme">Get professional support for this package with a Tidelift subscription</a>
</b>
<br>
<sub>
Tidelift helps make open source sustainable for maintainers while giving companies<br>assurances about security, maintenance, and licensing for their dependencies.
</sub>
</div>
---
## API
### wrapAnsi(input, columns, [options])
Wrap words to the specified column width.
#### input
Type: `string`
String with ANSI escape codes. Like one styled by [`chalk`](https://github.com/chalk/chalk).
#### columns
Type: `number`
Number of columns to wrap the text to.
#### options
Type: `Object`
##### hard
Type: `boolean`<br>
Default: `false`
By default the wrap is soft, meaning long words may extend past the column width. Setting this to `true` will make it hard wrap at the column width.
##### wordWrap
Type: `boolean`<br>
Default: `true`
By default, an attempt is made to split words at spaces, ensuring that they don't extend past the configured columns. If wordWrap is `false`, each column will instead be completely filled splitting words as necessary.
##### trim
Type: `boolean`<br>
Default: `true`
Whitespace on all lines is removed by default. Set this option to `false` if you don't want to trim.
## Related
- [slice-ansi](https://github.com/chalk/slice-ansi) - Slice a string with ANSI escape codes
- [cli-truncate](https://github.com/sindresorhus/cli-truncate) - Truncate a string to a specific width in the terminal
- [chalk](https://github.com/chalk/chalk) - Terminal string styling done right
- [jsesc](https://github.com/mathiasbynens/jsesc) - Generate ASCII-only output from Unicode strings. Useful for creating test fixtures.
## Maintainers
- [Sindre Sorhus](https://github.com/sindresorhus)
- [Josh Junon](https://github.com/qix-)
- [Benjamin Coe](https://github.com/bcoe)
## Security
To report a security vulnerability, please use the [Tidelift security contact](https://tidelift.com/security). Tidelift will coordinate the fix and disclosure.
## License
MIT

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# ws: a node.js websocket library
[![Build Status](https://travis-ci.org/websockets/ws.svg?branch=master)](https://travis-ci.org/websockets/ws)
`ws` is a simple to use WebSocket implementation, up-to-date against RFC-6455,
and [probably the fastest WebSocket library for node.js][archive].
Passes the quite extensive Autobahn test suite. See http://websockets.github.com/ws
for the full reports.
## Protocol support
* **Hixie draft 76** (Old and deprecated, but still in use by Safari and Opera.
Added to ws version 0.4.2, but server only. Can be disabled by setting the
`disableHixie` option to true.)
* **HyBi drafts 07-12** (Use the option `protocolVersion: 8`)
* **HyBi drafts 13-17** (Current default, alternatively option `protocolVersion: 13`)
### Installing
```
npm install --save ws
```
### Opt-in for performance
There are 2 optional modules that can be installed along side with the `ws`
module. These modules are binary addons which improve certain operations, but as
they are binary addons they require compilation which can fail if no c++
compiler is installed on the host system.
- `npm install --save bufferutil`: Improves internal buffer operations which
allows for faster processing of masked WebSocket frames and general buffer
operations.
- `npm install --save utf-8-validate`: The specification requires validation of
invalid UTF-8 chars, some of these validations could not be done in JavaScript
hence the need for a binary addon. In most cases you will already be
validating the input that you receive for security purposes leading to double
validation. But if you want to be 100% spec-conforming and have fast
validation of UTF-8 then this module is a must.
### Sending and receiving text data
```js
var WebSocket = require('ws');
var ws = new WebSocket('ws://www.host.com/path');
ws.on('open', function open() {
ws.send('something');
});
ws.on('message', function(data, flags) {
// flags.binary will be set if a binary data is received.
// flags.masked will be set if the data was masked.
});
```
### Sending binary data
```js
var WebSocket = require('ws');
var ws = new WebSocket('ws://www.host.com/path');
ws.on('open', function open() {
var array = new Float32Array(5);
for (var i = 0; i < array.length; ++i) {
array[i] = i / 2;
}
ws.send(array, { binary: true, mask: true });
});
```
Setting `mask`, as done for the send options above, will cause the data to be
masked according to the WebSocket protocol. The same option applies for text
data.
### Server example
```js
var WebSocketServer = require('ws').Server
, wss = new WebSocketServer({ port: 8080 });
wss.on('connection', function connection(ws) {
ws.on('message', function incoming(message) {
console.log('received: %s', message);
});
ws.send('something');
});
```
### ExpressJS example
```js
var server = require('http').createServer()
, url = require('url')
, WebSocketServer = require('ws').Server
, wss = new WebSocketServer({ server: server })
, express = require('express')
, app = express()
, port = 4080;
app.use(function (req, res) {
res.send({ msg: "hello" });
});
wss.on('connection', function connection(ws) {
var location = url.parse(ws.upgradeReq.url, true);
// you might use location.query.access_token to authenticate or share sessions
// or ws.upgradeReq.headers.cookie (see http://stackoverflow.com/a/16395220/151312)
ws.on('message', function incoming(message) {
console.log('received: %s', message);
});
ws.send('something');
});
server.on('request', app);
server.listen(port, function () { console.log('Listening on ' + server.address().port) });
```
### Server sending broadcast data
```js
var WebSocketServer = require('ws').Server
, wss = new WebSocketServer({ port: 8080 });
wss.broadcast = function broadcast(data) {
wss.clients.forEach(function each(client) {
client.send(data);
});
};
```
### Error handling best practices
```js
// If the WebSocket is closed before the following send is attempted
ws.send('something');
// Errors (both immediate and async write errors) can be detected in an optional
// callback. The callback is also the only way of being notified that data has
// actually been sent.
ws.send('something', function ack(error) {
// if error is not defined, the send has been completed,
// otherwise the error object will indicate what failed.
});
// Immediate errors can also be handled with try/catch-blocks, but **note** that
// since sends are inherently asynchronous, socket write failures will *not* be
// captured when this technique is used.
try { ws.send('something'); }
catch (e) { /* handle error */ }
```
### echo.websocket.org demo
```js
var WebSocket = require('ws');
var ws = new WebSocket('ws://echo.websocket.org/', {
protocolVersion: 8,
origin: 'http://websocket.org'
});
ws.on('open', function open() {
console.log('connected');
ws.send(Date.now().toString(), {mask: true});
});
ws.on('close', function close() {
console.log('disconnected');
});
ws.on('message', function message(data, flags) {
console.log('Roundtrip time: ' + (Date.now() - parseInt(data)) + 'ms', flags);
setTimeout(function timeout() {
ws.send(Date.now().toString(), {mask: true});
}, 500);
});
```
### Other examples
For a full example with a browser client communicating with a ws server, see the
examples folder.
Note that the usage together with Express 3.0 is quite different from Express
2.x. The difference is expressed in the two different serverstats-examples.
Otherwise, see the test cases.
### Running the tests
```
make test
```
## API Docs
See [`/doc/ws.md`](https://github.com/websockets/ws/blob/master/doc/ws.md) for Node.js-like docs for the ws classes.
## Changelog
We're using the GitHub [`releases`](https://github.com/websockets/ws/releases) for changelog entries.
## License
(The MIT License)
Copyright (c) 2011 Einar Otto Stangvik &lt;einaros@gmail.com&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.
[archive]: http://web.archive.org/web/20130314230536/http://hobbycoding.posterous.com/the-fastest-websocket-module-for-nodejs

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'use strict';
/*!
* ws: a node.js websocket client
* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
* MIT Licensed
*/
var WS = module.exports = require('./lib/WebSocket');
WS.Server = require('./lib/WebSocketServer');
WS.Sender = require('./lib/Sender');
WS.Receiver = require('./lib/Receiver');
/**
* Create a new WebSocket server.
*
* @param {Object} options Server options
* @param {Function} fn Optional connection listener.
* @returns {WS.Server}
* @api public
*/
WS.createServer = function createServer(options, fn) {
var server = new WS.Server(options);
if (typeof fn === 'function') {
server.on('connection', fn);
}
return server;
};
/**
* Create a new WebSocket connection.
*
* @param {String} address The URL/address we need to connect to.
* @param {Function} fn Open listener.
* @returns {WS}
* @api public
*/
WS.connect = WS.createConnection = function connect(address, fn) {
var client = new WS(address);
if (typeof fn === 'function') {
client.on('open', fn);
}
return client;
};

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/*!
* ws: a node.js websocket client
* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
* MIT Licensed
*/
var util = require('util');
function BufferPool(initialSize, growStrategy, shrinkStrategy) {
if (this instanceof BufferPool === false) {
throw new TypeError("Classes can't be function-called");
}
if (typeof initialSize === 'function') {
shrinkStrategy = growStrategy;
growStrategy = initialSize;
initialSize = 0;
}
else if (typeof initialSize === 'undefined') {
initialSize = 0;
}
this._growStrategy = (growStrategy || function(db, size) {
return db.used + size;
}).bind(null, this);
this._shrinkStrategy = (shrinkStrategy || function(db) {
return initialSize;
}).bind(null, this);
this._buffer = initialSize ? new Buffer(initialSize) : null;
this._offset = 0;
this._used = 0;
this._changeFactor = 0;
this.__defineGetter__('size', function(){
return this._buffer == null ? 0 : this._buffer.length;
});
this.__defineGetter__('used', function(){
return this._used;
});
}
BufferPool.prototype.get = function(length) {
if (this._buffer == null || this._offset + length > this._buffer.length) {
var newBuf = new Buffer(this._growStrategy(length));
this._buffer = newBuf;
this._offset = 0;
}
this._used += length;
var buf = this._buffer.slice(this._offset, this._offset + length);
this._offset += length;
return buf;
}
BufferPool.prototype.reset = function(forceNewBuffer) {
var len = this._shrinkStrategy();
if (len < this.size) this._changeFactor -= 1;
if (forceNewBuffer || this._changeFactor < -2) {
this._changeFactor = 0;
this._buffer = len ? new Buffer(len) : null;
}
this._offset = 0;
this._used = 0;
}
module.exports = BufferPool;

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/*!
* ws: a node.js websocket client
* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
* MIT Licensed
*/
exports.BufferUtil = {
merge: function(mergedBuffer, buffers) {
var offset = 0;
for (var i = 0, l = buffers.length; i < l; ++i) {
var buf = buffers[i];
buf.copy(mergedBuffer, offset);
offset += buf.length;
}
},
mask: function(source, mask, output, offset, length) {
var maskNum = mask.readUInt32LE(0, true);
var i = 0;
for (; i < length - 3; i += 4) {
var num = maskNum ^ source.readUInt32LE(i, true);
if (num < 0) num = 4294967296 + num;
output.writeUInt32LE(num, offset + i, true);
}
switch (length % 4) {
case 3: output[offset + i + 2] = source[i + 2] ^ mask[2];
case 2: output[offset + i + 1] = source[i + 1] ^ mask[1];
case 1: output[offset + i] = source[i] ^ mask[0];
case 0:;
}
},
unmask: function(data, mask) {
var maskNum = mask.readUInt32LE(0, true);
var length = data.length;
var i = 0;
for (; i < length - 3; i += 4) {
var num = maskNum ^ data.readUInt32LE(i, true);
if (num < 0) num = 4294967296 + num;
data.writeUInt32LE(num, i, true);
}
switch (length % 4) {
case 3: data[i + 2] = data[i + 2] ^ mask[2];
case 2: data[i + 1] = data[i + 1] ^ mask[1];
case 1: data[i] = data[i] ^ mask[0];
case 0:;
}
}
}

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'use strict';
/*!
* ws: a node.js websocket client
* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
* MIT Licensed
*/
var bufferUtil;
try {
bufferUtil = require('bufferutil');
} catch (e) {
bufferUtil = require('./BufferUtil.fallback');
}
module.exports = bufferUtil.BufferUtil || bufferUtil;

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/*!
* ws: a node.js websocket client
* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
* MIT Licensed
*/
module.exports = {
isValidErrorCode: function(code) {
return (code >= 1000 && code <= 1011 && code != 1004 && code != 1005 && code != 1006) ||
(code >= 3000 && code <= 4999);
},
1000: 'normal',
1001: 'going away',
1002: 'protocol error',
1003: 'unsupported data',
1004: 'reserved',
1005: 'reserved for extensions',
1006: 'reserved for extensions',
1007: 'inconsistent or invalid data',
1008: 'policy violation',
1009: 'message too big',
1010: 'extension handshake missing',
1011: 'an unexpected condition prevented the request from being fulfilled',
};

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var util = require('util');
/**
* Module exports.
*/
exports.parse = parse;
exports.format = format;
/**
* Parse extensions header value
*/
function parse(value) {
value = value || '';
var extensions = {};
value.split(',').forEach(function(v) {
var params = v.split(';');
var token = params.shift().trim();
if (extensions[token] === undefined) {
extensions[token] = [];
} else if (!extensions.hasOwnProperty(token)) {
return;
}
var parsedParams = {};
params.forEach(function(param) {
var parts = param.trim().split('=');
var key = parts[0];
var value = parts[1];
if (typeof value === 'undefined') {
value = true;
} else {
// unquote value
if (value[0] === '"') {
value = value.slice(1);
}
if (value[value.length - 1] === '"') {
value = value.slice(0, value.length - 1);
}
}
if (parsedParams[key] === undefined) {
parsedParams[key] = [value];
} else if (parsedParams.hasOwnProperty(key)) {
parsedParams[key].push(value);
}
});
extensions[token].push(parsedParams);
});
return extensions;
}
/**
* Format extensions header value
*/
function format(value) {
return Object.keys(value).map(function(token) {
var paramsList = value[token];
if (!util.isArray(paramsList)) {
paramsList = [paramsList];
}
return paramsList.map(function(params) {
return [token].concat(Object.keys(params).map(function(k) {
var p = params[k];
if (!util.isArray(p)) p = [p];
return p.map(function(v) {
return v === true ? k : k + '=' + v;
}).join('; ');
})).join('; ');
}).join(', ');
}).join(', ');
}

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var zlib = require('zlib');
var AVAILABLE_WINDOW_BITS = [8, 9, 10, 11, 12, 13, 14, 15];
var DEFAULT_WINDOW_BITS = 15;
var DEFAULT_MEM_LEVEL = 8;
PerMessageDeflate.extensionName = 'permessage-deflate';
/**
* Per-message Compression Extensions implementation
*/
function PerMessageDeflate(options, isServer,maxPayload) {
if (this instanceof PerMessageDeflate === false) {
throw new TypeError("Classes can't be function-called");
}
this._options = options || {};
this._isServer = !!isServer;
this._inflate = null;
this._deflate = null;
this.params = null;
this._maxPayload = maxPayload || 0;
}
/**
* Create extension parameters offer
*
* @api public
*/
PerMessageDeflate.prototype.offer = function() {
var params = {};
if (this._options.serverNoContextTakeover) {
params.server_no_context_takeover = true;
}
if (this._options.clientNoContextTakeover) {
params.client_no_context_takeover = true;
}
if (this._options.serverMaxWindowBits) {
params.server_max_window_bits = this._options.serverMaxWindowBits;
}
if (this._options.clientMaxWindowBits) {
params.client_max_window_bits = this._options.clientMaxWindowBits;
} else if (this._options.clientMaxWindowBits == null) {
params.client_max_window_bits = true;
}
return params;
};
/**
* Accept extension offer
*
* @api public
*/
PerMessageDeflate.prototype.accept = function(paramsList) {
paramsList = this.normalizeParams(paramsList);
var params;
if (this._isServer) {
params = this.acceptAsServer(paramsList);
} else {
params = this.acceptAsClient(paramsList);
}
this.params = params;
return params;
};
/**
* Releases all resources used by the extension
*
* @api public
*/
PerMessageDeflate.prototype.cleanup = function() {
if (this._inflate) {
if (this._inflate.writeInProgress) {
this._inflate.pendingClose = true;
} else {
if (this._inflate.close) this._inflate.close();
this._inflate = null;
}
}
if (this._deflate) {
if (this._deflate.writeInProgress) {
this._deflate.pendingClose = true;
} else {
if (this._deflate.close) this._deflate.close();
this._deflate = null;
}
}
};
/**
* Accept extension offer from client
*
* @api private
*/
PerMessageDeflate.prototype.acceptAsServer = function(paramsList) {
var accepted = {};
var result = paramsList.some(function(params) {
accepted = {};
if (this._options.serverNoContextTakeover === false && params.server_no_context_takeover) {
return;
}
if (this._options.serverMaxWindowBits === false && params.server_max_window_bits) {
return;
}
if (typeof this._options.serverMaxWindowBits === 'number' &&
typeof params.server_max_window_bits === 'number' &&
this._options.serverMaxWindowBits > params.server_max_window_bits) {
return;
}
if (typeof this._options.clientMaxWindowBits === 'number' && !params.client_max_window_bits) {
return;
}
if (this._options.serverNoContextTakeover || params.server_no_context_takeover) {
accepted.server_no_context_takeover = true;
}
if (this._options.clientNoContextTakeover) {
accepted.client_no_context_takeover = true;
}
if (this._options.clientNoContextTakeover !== false && params.client_no_context_takeover) {
accepted.client_no_context_takeover = true;
}
if (typeof this._options.serverMaxWindowBits === 'number') {
accepted.server_max_window_bits = this._options.serverMaxWindowBits;
} else if (typeof params.server_max_window_bits === 'number') {
accepted.server_max_window_bits = params.server_max_window_bits;
}
if (typeof this._options.clientMaxWindowBits === 'number') {
accepted.client_max_window_bits = this._options.clientMaxWindowBits;
} else if (this._options.clientMaxWindowBits !== false && typeof params.client_max_window_bits === 'number') {
accepted.client_max_window_bits = params.client_max_window_bits;
}
return true;
}, this);
if (!result) {
throw new Error('Doesn\'t support the offered configuration');
}
return accepted;
};
/**
* Accept extension response from server
*
* @api privaye
*/
PerMessageDeflate.prototype.acceptAsClient = function(paramsList) {
var params = paramsList[0];
if (this._options.clientNoContextTakeover != null) {
if (this._options.clientNoContextTakeover === false && params.client_no_context_takeover) {
throw new Error('Invalid value for "client_no_context_takeover"');
}
}
if (this._options.clientMaxWindowBits != null) {
if (this._options.clientMaxWindowBits === false && params.client_max_window_bits) {
throw new Error('Invalid value for "client_max_window_bits"');
}
if (typeof this._options.clientMaxWindowBits === 'number' &&
(!params.client_max_window_bits || params.client_max_window_bits > this._options.clientMaxWindowBits)) {
throw new Error('Invalid value for "client_max_window_bits"');
}
}
return params;
};
/**
* Normalize extensions parameters
*
* @api private
*/
PerMessageDeflate.prototype.normalizeParams = function(paramsList) {
return paramsList.map(function(params) {
Object.keys(params).forEach(function(key) {
var value = params[key];
if (value.length > 1) {
throw new Error('Multiple extension parameters for ' + key);
}
value = value[0];
switch (key) {
case 'server_no_context_takeover':
case 'client_no_context_takeover':
if (value !== true) {
throw new Error('invalid extension parameter value for ' + key + ' (' + value + ')');
}
params[key] = true;
break;
case 'server_max_window_bits':
case 'client_max_window_bits':
if (typeof value === 'string') {
value = parseInt(value, 10);
if (!~AVAILABLE_WINDOW_BITS.indexOf(value)) {
throw new Error('invalid extension parameter value for ' + key + ' (' + value + ')');
}
}
if (!this._isServer && value === true) {
throw new Error('Missing extension parameter value for ' + key);
}
params[key] = value;
break;
default:
throw new Error('Not defined extension parameter (' + key + ')');
}
}, this);
return params;
}, this);
};
/**
* Decompress message
*
* @api public
*/
PerMessageDeflate.prototype.decompress = function (data, fin, callback) {
var endpoint = this._isServer ? 'client' : 'server';
if (!this._inflate) {
var maxWindowBits = this.params[endpoint + '_max_window_bits'];
this._inflate = zlib.createInflateRaw({
windowBits: 'number' === typeof maxWindowBits ? maxWindowBits : DEFAULT_WINDOW_BITS
});
}
this._inflate.writeInProgress = true;
var self = this;
var buffers = [];
var cumulativeBufferLength=0;
this._inflate.on('error', onError).on('data', onData);
this._inflate.write(data);
if (fin) {
this._inflate.write(new Buffer([0x00, 0x00, 0xff, 0xff]));
}
this._inflate.flush(function() {
cleanup();
callback(null, Buffer.concat(buffers));
});
function onError(err) {
cleanup();
callback(err);
}
function onData(data) {
if(self._maxPayload!==undefined && self._maxPayload!==null && self._maxPayload>0){
cumulativeBufferLength+=data.length;
if(cumulativeBufferLength>self._maxPayload){
buffers=[];
cleanup();
var err={type:1009};
callback(err);
return;
}
}
buffers.push(data);
}
function cleanup() {
if (!self._inflate) return;
self._inflate.removeListener('error', onError);
self._inflate.removeListener('data', onData);
self._inflate.writeInProgress = false;
if ((fin && self.params[endpoint + '_no_context_takeover']) || self._inflate.pendingClose) {
if (self._inflate.close) self._inflate.close();
self._inflate = null;
}
}
};
/**
* Compress message
*
* @api public
*/
PerMessageDeflate.prototype.compress = function (data, fin, callback) {
var endpoint = this._isServer ? 'server' : 'client';
if (!this._deflate) {
var maxWindowBits = this.params[endpoint + '_max_window_bits'];
this._deflate = zlib.createDeflateRaw({
flush: zlib.Z_SYNC_FLUSH,
windowBits: 'number' === typeof maxWindowBits ? maxWindowBits : DEFAULT_WINDOW_BITS,
memLevel: this._options.memLevel || DEFAULT_MEM_LEVEL
});
}
this._deflate.writeInProgress = true;
var self = this;
var buffers = [];
this._deflate.on('error', onError).on('data', onData);
this._deflate.write(data);
this._deflate.flush(function() {
cleanup();
var data = Buffer.concat(buffers);
if (fin) {
data = data.slice(0, data.length - 4);
}
callback(null, data);
});
function onError(err) {
cleanup();
callback(err);
}
function onData(data) {
buffers.push(data);
}
function cleanup() {
if (!self._deflate) return;
self._deflate.removeListener('error', onError);
self._deflate.removeListener('data', onData);
self._deflate.writeInProgress = false;
if ((fin && self.params[endpoint + '_no_context_takeover']) || self._deflate.pendingClose) {
if (self._deflate.close) self._deflate.close();
self._deflate = null;
}
}
};
module.exports = PerMessageDeflate;

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node_modules/metro-inspector-proxy/node_modules/ws/lib/Receiver.hixie.js generated vendored Normal file
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/*!
* ws: a node.js websocket client
* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
* MIT Licensed
*/
var util = require('util');
/**
* State constants
*/
var EMPTY = 0
, BODY = 1;
var BINARYLENGTH = 2
, BINARYBODY = 3;
/**
* Hixie Receiver implementation
*/
function Receiver () {
if (this instanceof Receiver === false) {
throw new TypeError("Classes can't be function-called");
}
this.state = EMPTY;
this.buffers = [];
this.messageEnd = -1;
this.spanLength = 0;
this.dead = false;
this.onerror = function() {};
this.ontext = function() {};
this.onbinary = function() {};
this.onclose = function() {};
this.onping = function() {};
this.onpong = function() {};
}
module.exports = Receiver;
/**
* Add new data to the parser.
*
* @api public
*/
Receiver.prototype.add = function(data) {
if (this.dead) return;
var self = this;
function doAdd() {
if (self.state === EMPTY) {
if (data.length == 2 && data[0] == 0xFF && data[1] == 0x00) {
self.reset();
self.onclose();
return;
}
if (data[0] === 0x80) {
self.messageEnd = 0;
self.state = BINARYLENGTH;
data = data.slice(1);
} else {
if (data[0] !== 0x00) {
self.error('payload must start with 0x00 byte', true);
return;
}
data = data.slice(1);
self.state = BODY;
}
}
if (self.state === BINARYLENGTH) {
var i = 0;
while ((i < data.length) && (data[i] & 0x80)) {
self.messageEnd = 128 * self.messageEnd + (data[i] & 0x7f);
++i;
}
if (i < data.length) {
self.messageEnd = 128 * self.messageEnd + (data[i] & 0x7f);
self.state = BINARYBODY;
++i;
}
if (i > 0)
data = data.slice(i);
}
if (self.state === BINARYBODY) {
var dataleft = self.messageEnd - self.spanLength;
if (data.length >= dataleft) {
// consume the whole buffer to finish the frame
self.buffers.push(data);
self.spanLength += dataleft;
self.messageEnd = dataleft;
return self.parse();
}
// frame's not done even if we consume it all
self.buffers.push(data);
self.spanLength += data.length;
return;
}
self.buffers.push(data);
if ((self.messageEnd = bufferIndex(data, 0xFF)) != -1) {
self.spanLength += self.messageEnd;
return self.parse();
}
else self.spanLength += data.length;
}
while(data) data = doAdd();
};
/**
* Releases all resources used by the receiver.
*
* @api public
*/
Receiver.prototype.cleanup = function() {
this.dead = true;
this.state = EMPTY;
this.buffers = [];
};
/**
* Process buffered data.
*
* @api public
*/
Receiver.prototype.parse = function() {
var output = new Buffer(this.spanLength);
var outputIndex = 0;
for (var bi = 0, bl = this.buffers.length; bi < bl - 1; ++bi) {
var buffer = this.buffers[bi];
buffer.copy(output, outputIndex);
outputIndex += buffer.length;
}
var lastBuffer = this.buffers[this.buffers.length - 1];
if (this.messageEnd > 0) lastBuffer.copy(output, outputIndex, 0, this.messageEnd);
if (this.state !== BODY) --this.messageEnd;
var tail = null;
if (this.messageEnd < lastBuffer.length - 1) {
tail = lastBuffer.slice(this.messageEnd + 1);
}
this.reset();
this.ontext(output.toString('utf8'));
return tail;
};
/**
* Handles an error
*
* @api private
*/
Receiver.prototype.error = function (reason, terminate) {
if (this.dead) return;
this.reset();
if(typeof reason == 'string'){
this.onerror(new Error(reason), terminate);
}
else if(reason.constructor == Error){
this.onerror(reason, terminate);
}
else{
this.onerror(new Error("An error occured"),terminate);
}
return this;
};
/**
* Reset parser state
*
* @api private
*/
Receiver.prototype.reset = function (reason) {
if (this.dead) return;
this.state = EMPTY;
this.buffers = [];
this.messageEnd = -1;
this.spanLength = 0;
};
/**
* Internal api
*/
function bufferIndex(buffer, byte) {
for (var i = 0, l = buffer.length; i < l; ++i) {
if (buffer[i] === byte) return i;
}
return -1;
}

793
node_modules/metro-inspector-proxy/node_modules/ws/lib/Receiver.js generated vendored Normal file
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/*!
* ws: a node.js websocket client
* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
* MIT Licensed
*/
var util = require('util')
, isValidUTF8 = require('./Validation')
, ErrorCodes = require('./ErrorCodes')
, BufferPool = require('./BufferPool')
, bufferUtil = require('./BufferUtil')
, PerMessageDeflate = require('./PerMessageDeflate');
/**
* HyBi Receiver implementation
*/
function Receiver (extensions,maxPayload) {
if (this instanceof Receiver === false) {
throw new TypeError("Classes can't be function-called");
}
if(typeof extensions==='number'){
maxPayload=extensions;
extensions={};
}
// memory pool for fragmented messages
var fragmentedPoolPrevUsed = -1;
this.fragmentedBufferPool = new BufferPool(1024, function(db, length) {
return db.used + length;
}, function(db) {
return fragmentedPoolPrevUsed = fragmentedPoolPrevUsed >= 0 ?
Math.ceil((fragmentedPoolPrevUsed + db.used) / 2) :
db.used;
});
// memory pool for unfragmented messages
var unfragmentedPoolPrevUsed = -1;
this.unfragmentedBufferPool = new BufferPool(1024, function(db, length) {
return db.used + length;
}, function(db) {
return unfragmentedPoolPrevUsed = unfragmentedPoolPrevUsed >= 0 ?
Math.ceil((unfragmentedPoolPrevUsed + db.used) / 2) :
db.used;
});
this.extensions = extensions || {};
this.maxPayload = maxPayload || 0;
this.currentPayloadLength = 0;
this.state = {
activeFragmentedOperation: null,
lastFragment: false,
masked: false,
opcode: 0,
fragmentedOperation: false
};
this.overflow = [];
this.headerBuffer = new Buffer(10);
this.expectOffset = 0;
this.expectBuffer = null;
this.expectHandler = null;
this.currentMessage = [];
this.currentMessageLength = 0;
this.messageHandlers = [];
this.expectHeader(2, this.processPacket);
this.dead = false;
this.processing = false;
this.onerror = function() {};
this.ontext = function() {};
this.onbinary = function() {};
this.onclose = function() {};
this.onping = function() {};
this.onpong = function() {};
}
module.exports = Receiver;
/**
* Add new data to the parser.
*
* @api public
*/
Receiver.prototype.add = function(data) {
if (this.dead) return;
var dataLength = data.length;
if (dataLength == 0) return;
if (this.expectBuffer == null) {
this.overflow.push(data);
return;
}
var toRead = Math.min(dataLength, this.expectBuffer.length - this.expectOffset);
fastCopy(toRead, data, this.expectBuffer, this.expectOffset);
this.expectOffset += toRead;
if (toRead < dataLength) {
this.overflow.push(data.slice(toRead));
}
while (this.expectBuffer && this.expectOffset == this.expectBuffer.length) {
var bufferForHandler = this.expectBuffer;
this.expectBuffer = null;
this.expectOffset = 0;
this.expectHandler.call(this, bufferForHandler);
}
};
/**
* Releases all resources used by the receiver.
*
* @api public
*/
Receiver.prototype.cleanup = function() {
this.dead = true;
this.overflow = null;
this.headerBuffer = null;
this.expectBuffer = null;
this.expectHandler = null;
this.unfragmentedBufferPool = null;
this.fragmentedBufferPool = null;
this.state = null;
this.currentMessage = null;
this.onerror = null;
this.ontext = null;
this.onbinary = null;
this.onclose = null;
this.onping = null;
this.onpong = null;
};
/**
* Waits for a certain amount of header bytes to be available, then fires a callback.
*
* @api private
*/
Receiver.prototype.expectHeader = function(length, handler) {
if (length == 0) {
handler(null);
return;
}
this.expectBuffer = this.headerBuffer.slice(this.expectOffset, this.expectOffset + length);
this.expectHandler = handler;
var toRead = length;
while (toRead > 0 && this.overflow.length > 0) {
var fromOverflow = this.overflow.pop();
if (toRead < fromOverflow.length) this.overflow.push(fromOverflow.slice(toRead));
var read = Math.min(fromOverflow.length, toRead);
fastCopy(read, fromOverflow, this.expectBuffer, this.expectOffset);
this.expectOffset += read;
toRead -= read;
}
};
/**
* Waits for a certain amount of data bytes to be available, then fires a callback.
*
* @api private
*/
Receiver.prototype.expectData = function(length, handler) {
if (length == 0) {
handler(null);
return;
}
this.expectBuffer = this.allocateFromPool(length, this.state.fragmentedOperation);
this.expectHandler = handler;
var toRead = length;
while (toRead > 0 && this.overflow.length > 0) {
var fromOverflow = this.overflow.pop();
if (toRead < fromOverflow.length) this.overflow.push(fromOverflow.slice(toRead));
var read = Math.min(fromOverflow.length, toRead);
fastCopy(read, fromOverflow, this.expectBuffer, this.expectOffset);
this.expectOffset += read;
toRead -= read;
}
};
/**
* Allocates memory from the buffer pool.
*
* @api private
*/
Receiver.prototype.allocateFromPool = function(length, isFragmented) {
return (isFragmented ? this.fragmentedBufferPool : this.unfragmentedBufferPool).get(length);
};
/**
* Start processing a new packet.
*
* @api private
*/
Receiver.prototype.processPacket = function (data) {
if (this.extensions[PerMessageDeflate.extensionName]) {
if ((data[0] & 0x30) != 0) {
this.error('reserved fields (2, 3) must be empty', 1002);
return;
}
} else {
if ((data[0] & 0x70) != 0) {
this.error('reserved fields must be empty', 1002);
return;
}
}
this.state.lastFragment = (data[0] & 0x80) == 0x80;
this.state.masked = (data[1] & 0x80) == 0x80;
var compressed = (data[0] & 0x40) == 0x40;
var opcode = data[0] & 0xf;
if (opcode === 0) {
if (compressed) {
this.error('continuation frame cannot have the Per-message Compressed bits', 1002);
return;
}
// continuation frame
this.state.fragmentedOperation = true;
this.state.opcode = this.state.activeFragmentedOperation;
if (!(this.state.opcode == 1 || this.state.opcode == 2)) {
this.error('continuation frame cannot follow current opcode', 1002);
return;
}
}
else {
if (opcode < 3 && this.state.activeFragmentedOperation != null) {
this.error('data frames after the initial data frame must have opcode 0', 1002);
return;
}
if (opcode >= 8 && compressed) {
this.error('control frames cannot have the Per-message Compressed bits', 1002);
return;
}
this.state.compressed = compressed;
this.state.opcode = opcode;
if (this.state.lastFragment === false) {
this.state.fragmentedOperation = true;
this.state.activeFragmentedOperation = opcode;
}
else this.state.fragmentedOperation = false;
}
var handler = opcodes[this.state.opcode];
if (typeof handler == 'undefined') this.error('no handler for opcode ' + this.state.opcode, 1002);
else {
handler.start.call(this, data);
}
};
/**
* Endprocessing a packet.
*
* @api private
*/
Receiver.prototype.endPacket = function() {
if (this.dead) return;
if (!this.state.fragmentedOperation) this.unfragmentedBufferPool.reset(true);
else if (this.state.lastFragment) this.fragmentedBufferPool.reset(true);
this.expectOffset = 0;
this.expectBuffer = null;
this.expectHandler = null;
if (this.state.lastFragment && this.state.opcode === this.state.activeFragmentedOperation) {
// end current fragmented operation
this.state.activeFragmentedOperation = null;
}
this.currentPayloadLength = 0;
this.state.lastFragment = false;
this.state.opcode = this.state.activeFragmentedOperation != null ? this.state.activeFragmentedOperation : 0;
this.state.masked = false;
this.expectHeader(2, this.processPacket);
};
/**
* Reset the parser state.
*
* @api private
*/
Receiver.prototype.reset = function() {
if (this.dead) return;
this.state = {
activeFragmentedOperation: null,
lastFragment: false,
masked: false,
opcode: 0,
fragmentedOperation: false
};
this.fragmentedBufferPool.reset(true);
this.unfragmentedBufferPool.reset(true);
this.expectOffset = 0;
this.expectBuffer = null;
this.expectHandler = null;
this.overflow = [];
this.currentMessage = [];
this.currentMessageLength = 0;
this.messageHandlers = [];
this.currentPayloadLength = 0;
};
/**
* Unmask received data.
*
* @api private
*/
Receiver.prototype.unmask = function (mask, buf, binary) {
if (mask != null && buf != null) bufferUtil.unmask(buf, mask);
if (binary) return buf;
return buf != null ? buf.toString('utf8') : '';
};
/**
* Handles an error
*
* @api private
*/
Receiver.prototype.error = function (reason, protocolErrorCode) {
if (this.dead) return;
this.reset();
if(typeof reason == 'string'){
this.onerror(new Error(reason), protocolErrorCode);
}
else if(reason.constructor == Error){
this.onerror(reason, protocolErrorCode);
}
else{
this.onerror(new Error("An error occured"),protocolErrorCode);
}
return this;
};
/**
* Execute message handler buffers
*
* @api private
*/
Receiver.prototype.flush = function() {
if (this.processing || this.dead) return;
var handler = this.messageHandlers.shift();
if (!handler) return;
this.processing = true;
var self = this;
handler(function() {
self.processing = false;
self.flush();
});
};
/**
* Apply extensions to message
*
* @api private
*/
Receiver.prototype.applyExtensions = function(messageBuffer, fin, compressed, callback) {
var self = this;
if (compressed) {
this.extensions[PerMessageDeflate.extensionName].decompress(messageBuffer, fin, function(err, buffer) {
if (self.dead) return;
if (err) {
callback(new Error('invalid compressed data'));
return;
}
callback(null, buffer);
});
} else {
callback(null, messageBuffer);
}
};
/**
* Checks payload size, disconnects socket when it exceeds maxPayload
*
* @api private
*/
Receiver.prototype.maxPayloadExceeded = function(length) {
if (this.maxPayload=== undefined || this.maxPayload === null || this.maxPayload < 1) {
return false;
}
var fullLength = this.currentPayloadLength + length;
if (fullLength < this.maxPayload) {
this.currentPayloadLength = fullLength;
return false;
}
this.error('payload cannot exceed ' + this.maxPayload + ' bytes', 1009);
this.messageBuffer=[];
this.cleanup();
return true;
};
/**
* Buffer utilities
*/
function readUInt16BE(start) {
return (this[start]<<8) +
this[start+1];
}
function readUInt32BE(start) {
return (this[start]<<24) +
(this[start+1]<<16) +
(this[start+2]<<8) +
this[start+3];
}
function fastCopy(length, srcBuffer, dstBuffer, dstOffset) {
switch (length) {
default: srcBuffer.copy(dstBuffer, dstOffset, 0, length); break;
case 16: dstBuffer[dstOffset+15] = srcBuffer[15];
case 15: dstBuffer[dstOffset+14] = srcBuffer[14];
case 14: dstBuffer[dstOffset+13] = srcBuffer[13];
case 13: dstBuffer[dstOffset+12] = srcBuffer[12];
case 12: dstBuffer[dstOffset+11] = srcBuffer[11];
case 11: dstBuffer[dstOffset+10] = srcBuffer[10];
case 10: dstBuffer[dstOffset+9] = srcBuffer[9];
case 9: dstBuffer[dstOffset+8] = srcBuffer[8];
case 8: dstBuffer[dstOffset+7] = srcBuffer[7];
case 7: dstBuffer[dstOffset+6] = srcBuffer[6];
case 6: dstBuffer[dstOffset+5] = srcBuffer[5];
case 5: dstBuffer[dstOffset+4] = srcBuffer[4];
case 4: dstBuffer[dstOffset+3] = srcBuffer[3];
case 3: dstBuffer[dstOffset+2] = srcBuffer[2];
case 2: dstBuffer[dstOffset+1] = srcBuffer[1];
case 1: dstBuffer[dstOffset] = srcBuffer[0];
}
}
function clone(obj) {
var cloned = {};
for (var k in obj) {
if (obj.hasOwnProperty(k)) {
cloned[k] = obj[k];
}
}
return cloned;
}
/**
* Opcode handlers
*/
var opcodes = {
// text
'1': {
start: function(data) {
var self = this;
// decode length
var firstLength = data[1] & 0x7f;
if (firstLength < 126) {
if (self.maxPayloadExceeded(firstLength)){
self.error('Maximumpayload exceeded in compressed text message. Aborting...', 1009);
return;
}
opcodes['1'].getData.call(self, firstLength);
}
else if (firstLength == 126) {
self.expectHeader(2, function(data) {
var length = readUInt16BE.call(data, 0);
if (self.maxPayloadExceeded(length)){
self.error('Maximumpayload exceeded in compressed text message. Aborting...', 1009);
return;
}
opcodes['1'].getData.call(self, length);
});
}
else if (firstLength == 127) {
self.expectHeader(8, function(data) {
if (readUInt32BE.call(data, 0) != 0) {
self.error('packets with length spanning more than 32 bit is currently not supported', 1008);
return;
}
var length = readUInt32BE.call(data, 4);
if (self.maxPayloadExceeded(length)){
self.error('Maximumpayload exceeded in compressed text message. Aborting...', 1009);
return;
}
opcodes['1'].getData.call(self, readUInt32BE.call(data, 4));
});
}
},
getData: function(length) {
var self = this;
if (self.state.masked) {
self.expectHeader(4, function(data) {
var mask = data;
self.expectData(length, function(data) {
opcodes['1'].finish.call(self, mask, data);
});
});
}
else {
self.expectData(length, function(data) {
opcodes['1'].finish.call(self, null, data);
});
}
},
finish: function(mask, data) {
var self = this;
var packet = this.unmask(mask, data, true) || new Buffer(0);
var state = clone(this.state);
this.messageHandlers.push(function(callback) {
self.applyExtensions(packet, state.lastFragment, state.compressed, function(err, buffer) {
if (err) {
if(err.type===1009){
return self.error('Maximumpayload exceeded in compressed text message. Aborting...', 1009);
}
return self.error(err.message, 1007);
}
if (buffer != null) {
if( self.maxPayload==0 || (self.maxPayload > 0 && (self.currentMessageLength + buffer.length) < self.maxPayload) ){
self.currentMessage.push(buffer);
}
else{
self.currentMessage=null;
self.currentMessage = [];
self.currentMessageLength = 0;
self.error(new Error('Maximum payload exceeded. maxPayload: '+self.maxPayload), 1009);
return;
}
self.currentMessageLength += buffer.length;
}
if (state.lastFragment) {
var messageBuffer = Buffer.concat(self.currentMessage);
self.currentMessage = [];
self.currentMessageLength = 0;
if (!isValidUTF8(messageBuffer)) {
self.error('invalid utf8 sequence', 1007);
return;
}
self.ontext(messageBuffer.toString('utf8'), {masked: state.masked, buffer: messageBuffer});
}
callback();
});
});
this.flush();
this.endPacket();
}
},
// binary
'2': {
start: function(data) {
var self = this;
// decode length
var firstLength = data[1] & 0x7f;
if (firstLength < 126) {
if (self.maxPayloadExceeded(firstLength)){
self.error('Max payload exceeded in compressed text message. Aborting...', 1009);
return;
}
opcodes['2'].getData.call(self, firstLength);
}
else if (firstLength == 126) {
self.expectHeader(2, function(data) {
var length = readUInt16BE.call(data, 0);
if (self.maxPayloadExceeded(length)){
self.error('Max payload exceeded in compressed text message. Aborting...', 1009);
return;
}
opcodes['2'].getData.call(self, length);
});
}
else if (firstLength == 127) {
self.expectHeader(8, function(data) {
if (readUInt32BE.call(data, 0) != 0) {
self.error('packets with length spanning more than 32 bit is currently not supported', 1008);
return;
}
var length = readUInt32BE.call(data, 4, true);
if (self.maxPayloadExceeded(length)){
self.error('Max payload exceeded in compressed text message. Aborting...', 1009);
return;
}
opcodes['2'].getData.call(self, length);
});
}
},
getData: function(length) {
var self = this;
if (self.state.masked) {
self.expectHeader(4, function(data) {
var mask = data;
self.expectData(length, function(data) {
opcodes['2'].finish.call(self, mask, data);
});
});
}
else {
self.expectData(length, function(data) {
opcodes['2'].finish.call(self, null, data);
});
}
},
finish: function(mask, data) {
var self = this;
var packet = this.unmask(mask, data, true) || new Buffer(0);
var state = clone(this.state);
this.messageHandlers.push(function(callback) {
self.applyExtensions(packet, state.lastFragment, state.compressed, function(err, buffer) {
if (err) {
if(err.type===1009){
return self.error('Max payload exceeded in compressed binary message. Aborting...', 1009);
}
return self.error(err.message, 1007);
}
if (buffer != null) {
if( self.maxPayload==0 || (self.maxPayload > 0 && (self.currentMessageLength + buffer.length) < self.maxPayload) ){
self.currentMessage.push(buffer);
}
else{
self.currentMessage=null;
self.currentMessage = [];
self.currentMessageLength = 0;
self.error(new Error('Maximum payload exceeded'), 1009);
return;
}
self.currentMessageLength += buffer.length;
}
if (state.lastFragment) {
var messageBuffer = Buffer.concat(self.currentMessage);
self.currentMessage = [];
self.currentMessageLength = 0;
self.onbinary(messageBuffer, {masked: state.masked, buffer: messageBuffer});
}
callback();
});
});
this.flush();
this.endPacket();
}
},
// close
'8': {
start: function(data) {
var self = this;
if (self.state.lastFragment == false) {
self.error('fragmented close is not supported', 1002);
return;
}
// decode length
var firstLength = data[1] & 0x7f;
if (firstLength < 126) {
opcodes['8'].getData.call(self, firstLength);
}
else {
self.error('control frames cannot have more than 125 bytes of data', 1002);
}
},
getData: function(length) {
var self = this;
if (self.state.masked) {
self.expectHeader(4, function(data) {
var mask = data;
self.expectData(length, function(data) {
opcodes['8'].finish.call(self, mask, data);
});
});
}
else {
self.expectData(length, function(data) {
opcodes['8'].finish.call(self, null, data);
});
}
},
finish: function(mask, data) {
var self = this;
data = self.unmask(mask, data, true);
var state = clone(this.state);
this.messageHandlers.push(function() {
if (data && data.length == 1) {
self.error('close packets with data must be at least two bytes long', 1002);
return;
}
var code = data && data.length > 1 ? readUInt16BE.call(data, 0) : 1000;
if (!ErrorCodes.isValidErrorCode(code)) {
self.error('invalid error code', 1002);
return;
}
var message = '';
if (data && data.length > 2) {
var messageBuffer = data.slice(2);
if (!isValidUTF8(messageBuffer)) {
self.error('invalid utf8 sequence', 1007);
return;
}
message = messageBuffer.toString('utf8');
}
self.onclose(code, message, {masked: state.masked});
self.reset();
});
this.flush();
},
},
// ping
'9': {
start: function(data) {
var self = this;
if (self.state.lastFragment == false) {
self.error('fragmented ping is not supported', 1002);
return;
}
// decode length
var firstLength = data[1] & 0x7f;
if (firstLength < 126) {
opcodes['9'].getData.call(self, firstLength);
}
else {
self.error('control frames cannot have more than 125 bytes of data', 1002);
}
},
getData: function(length) {
var self = this;
if (self.state.masked) {
self.expectHeader(4, function(data) {
var mask = data;
self.expectData(length, function(data) {
opcodes['9'].finish.call(self, mask, data);
});
});
}
else {
self.expectData(length, function(data) {
opcodes['9'].finish.call(self, null, data);
});
}
},
finish: function(mask, data) {
var self = this;
data = this.unmask(mask, data, true);
var state = clone(this.state);
this.messageHandlers.push(function(callback) {
self.onping(data, {masked: state.masked, binary: true});
callback();
});
this.flush();
this.endPacket();
}
},
// pong
'10': {
start: function(data) {
var self = this;
if (self.state.lastFragment == false) {
self.error('fragmented pong is not supported', 1002);
return;
}
// decode length
var firstLength = data[1] & 0x7f;
if (firstLength < 126) {
opcodes['10'].getData.call(self, firstLength);
}
else {
self.error('control frames cannot have more than 125 bytes of data', 1002);
}
},
getData: function(length) {
var self = this;
if (this.state.masked) {
this.expectHeader(4, function(data) {
var mask = data;
self.expectData(length, function(data) {
opcodes['10'].finish.call(self, mask, data);
});
});
}
else {
this.expectData(length, function(data) {
opcodes['10'].finish.call(self, null, data);
});
}
},
finish: function(mask, data) {
var self = this;
data = self.unmask(mask, data, true);
var state = clone(this.state);
this.messageHandlers.push(function(callback) {
self.onpong(data, {masked: state.masked, binary: true});
callback();
});
this.flush();
this.endPacket();
}
}
}

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/*!
* ws: a node.js websocket client
* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
* MIT Licensed
*/
var events = require('events')
, util = require('util')
, EventEmitter = events.EventEmitter;
/**
* Hixie Sender implementation
*/
function Sender(socket) {
if (this instanceof Sender === false) {
throw new TypeError("Classes can't be function-called");
}
events.EventEmitter.call(this);
this.socket = socket;
this.continuationFrame = false;
this.isClosed = false;
}
module.exports = Sender;
/**
* Inherits from EventEmitter.
*/
util.inherits(Sender, events.EventEmitter);
/**
* Frames and writes data.
*
* @api public
*/
Sender.prototype.send = function(data, options, cb) {
if (this.isClosed) return;
var isString = typeof data == 'string'
, length = isString ? Buffer.byteLength(data) : data.length
, lengthbytes = (length > 127) ? 2 : 1 // assume less than 2**14 bytes
, writeStartMarker = this.continuationFrame == false
, writeEndMarker = !options || !(typeof options.fin != 'undefined' && !options.fin)
, buffer = new Buffer((writeStartMarker ? ((options && options.binary) ? (1 + lengthbytes) : 1) : 0) + length + ((writeEndMarker && !(options && options.binary)) ? 1 : 0))
, offset = writeStartMarker ? 1 : 0;
if (writeStartMarker) {
if (options && options.binary) {
buffer.write('\x80', 'binary');
// assume length less than 2**14 bytes
if (lengthbytes > 1)
buffer.write(String.fromCharCode(128+length/128), offset++, 'binary');
buffer.write(String.fromCharCode(length&0x7f), offset++, 'binary');
} else
buffer.write('\x00', 'binary');
}
if (isString) buffer.write(data, offset, 'utf8');
else data.copy(buffer, offset, 0);
if (writeEndMarker) {
if (options && options.binary) {
// sending binary, not writing end marker
} else
buffer.write('\xff', offset + length, 'binary');
this.continuationFrame = false;
}
else this.continuationFrame = true;
try {
this.socket.write(buffer, 'binary', cb);
} catch (e) {
this.error(e.toString());
}
};
/**
* Sends a close instruction to the remote party.
*
* @api public
*/
Sender.prototype.close = function(code, data, mask, cb) {
if (this.isClosed) return;
this.isClosed = true;
try {
if (this.continuationFrame) this.socket.write(new Buffer([0xff], 'binary'));
this.socket.write(new Buffer([0xff, 0x00]), 'binary', cb);
} catch (e) {
this.error(e.toString());
}
};
/**
* Sends a ping message to the remote party. Not available for hixie.
*
* @api public
*/
Sender.prototype.ping = function(data, options) {};
/**
* Sends a pong message to the remote party. Not available for hixie.
*
* @api public
*/
Sender.prototype.pong = function(data, options) {};
/**
* Handles an error
*
* @api private
*/
Sender.prototype.error = function (reason) {
this.emit('error', reason);
return this;
};

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/*!
* ws: a node.js websocket client
* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
* MIT Licensed
*/
var events = require('events')
, util = require('util')
, crypto = require('crypto')
, EventEmitter = events.EventEmitter
, ErrorCodes = require('./ErrorCodes')
, bufferUtil = require('./BufferUtil')
, PerMessageDeflate = require('./PerMessageDeflate');
/**
* HyBi Sender implementation
*/
function Sender(socket, extensions) {
if (this instanceof Sender === false) {
throw new TypeError("Classes can't be function-called");
}
events.EventEmitter.call(this);
this._socket = socket;
this.extensions = extensions || {};
this.firstFragment = true;
this.compress = false;
this.messageHandlers = [];
this.processing = false;
}
/**
* Inherits from EventEmitter.
*/
util.inherits(Sender, events.EventEmitter);
/**
* Sends a close instruction to the remote party.
*
* @api public
*/
Sender.prototype.close = function(code, data, mask, cb) {
if (typeof code !== 'undefined') {
if (typeof code !== 'number' ||
!ErrorCodes.isValidErrorCode(code)) throw new Error('first argument must be a valid error code number');
}
code = code || 1000;
var dataBuffer = new Buffer(2 + (data ? Buffer.byteLength(data) : 0));
writeUInt16BE.call(dataBuffer, code, 0);
if (dataBuffer.length > 2) dataBuffer.write(data, 2);
var self = this;
this.messageHandlers.push(function() {
self.frameAndSend(0x8, dataBuffer, true, mask);
if (typeof cb == 'function') cb();
});
this.flush();
};
/**
* Sends a ping message to the remote party.
*
* @api public
*/
Sender.prototype.ping = function(data, options) {
var mask = options && options.mask;
var self = this;
this.messageHandlers.push(function() {
self.frameAndSend(0x9, data || '', true, mask);
});
this.flush();
};
/**
* Sends a pong message to the remote party.
*
* @api public
*/
Sender.prototype.pong = function(data, options) {
var mask = options && options.mask;
var self = this;
this.messageHandlers.push(function() {
self.frameAndSend(0xa, data || '', true, mask);
});
this.flush();
};
/**
* Sends text or binary data to the remote party.
*
* @api public
*/
Sender.prototype.send = function(data, options, cb) {
var finalFragment = options && options.fin === false ? false : true;
var mask = options && options.mask;
var compress = options && options.compress;
var opcode = options && options.binary ? 2 : 1;
if (this.firstFragment === false) {
opcode = 0;
compress = false;
} else {
this.firstFragment = false;
this.compress = compress;
}
if (finalFragment) this.firstFragment = true
var compressFragment = this.compress;
var self = this;
this.messageHandlers.push(function() {
if (!data || !compressFragment) {
self.frameAndSend(opcode, data, finalFragment, mask, compress, cb);
return;
}
self.processing = true;
self.applyExtensions(data, finalFragment, compressFragment, function(err, data) {
if (err) {
if (typeof cb == 'function') cb(err);
else self.emit('error', err);
return;
}
self.frameAndSend(opcode, data, finalFragment, mask, compress, cb);
self.processing = false;
self.flush();
});
});
this.flush();
};
/**
* Frames and sends a piece of data according to the HyBi WebSocket protocol.
*
* @api private
*/
Sender.prototype.frameAndSend = function(opcode, data, finalFragment, maskData, compressed, cb) {
var canModifyData = false;
if (!data) {
try {
this._socket.write(new Buffer([opcode | (finalFragment ? 0x80 : 0), 0 | (maskData ? 0x80 : 0)].concat(maskData ? [0, 0, 0, 0] : [])), 'binary', cb);
}
catch (e) {
if (typeof cb == 'function') cb(e);
else this.emit('error', e);
}
return;
}
if (!Buffer.isBuffer(data)) {
canModifyData = true;
if (data && (typeof data.byteLength !== 'undefined' || typeof data.buffer !== 'undefined')) {
data = getArrayBuffer(data);
} else {
//
// If people want to send a number, this would allocate the number in
// bytes as memory size instead of storing the number as buffer value. So
// we need to transform it to string in order to prevent possible
// vulnerabilities / memory attacks.
//
if (typeof data === 'number') data = data.toString();
data = new Buffer(data);
}
}
var dataLength = data.length
, dataOffset = maskData ? 6 : 2
, secondByte = dataLength;
if (dataLength >= 65536) {
dataOffset += 8;
secondByte = 127;
}
else if (dataLength > 125) {
dataOffset += 2;
secondByte = 126;
}
var mergeBuffers = dataLength < 32768 || (maskData && !canModifyData);
var totalLength = mergeBuffers ? dataLength + dataOffset : dataOffset;
var outputBuffer = new Buffer(totalLength);
outputBuffer[0] = finalFragment ? opcode | 0x80 : opcode;
if (compressed) outputBuffer[0] |= 0x40;
switch (secondByte) {
case 126:
writeUInt16BE.call(outputBuffer, dataLength, 2);
break;
case 127:
writeUInt32BE.call(outputBuffer, 0, 2);
writeUInt32BE.call(outputBuffer, dataLength, 6);
}
if (maskData) {
outputBuffer[1] = secondByte | 0x80;
var mask = getRandomMask();
outputBuffer[dataOffset - 4] = mask[0];
outputBuffer[dataOffset - 3] = mask[1];
outputBuffer[dataOffset - 2] = mask[2];
outputBuffer[dataOffset - 1] = mask[3];
if (mergeBuffers) {
bufferUtil.mask(data, mask, outputBuffer, dataOffset, dataLength);
try {
this._socket.write(outputBuffer, 'binary', cb);
}
catch (e) {
if (typeof cb == 'function') cb(e);
else this.emit('error', e);
}
}
else {
bufferUtil.mask(data, mask, data, 0, dataLength);
try {
this._socket.write(outputBuffer, 'binary');
this._socket.write(data, 'binary', cb);
}
catch (e) {
if (typeof cb == 'function') cb(e);
else this.emit('error', e);
}
}
}
else {
outputBuffer[1] = secondByte;
if (mergeBuffers) {
data.copy(outputBuffer, dataOffset);
try {
this._socket.write(outputBuffer, 'binary', cb);
}
catch (e) {
if (typeof cb == 'function') cb(e);
else this.emit('error', e);
}
}
else {
try {
this._socket.write(outputBuffer, 'binary');
this._socket.write(data, 'binary', cb);
}
catch (e) {
if (typeof cb == 'function') cb(e);
else this.emit('error', e);
}
}
}
};
/**
* Execute message handler buffers
*
* @api private
*/
Sender.prototype.flush = function() {
while (!this.processing && this.messageHandlers.length) {
this.messageHandlers.shift()();
}
};
/**
* Apply extensions to message
*
* @api private
*/
Sender.prototype.applyExtensions = function(data, fin, compress, callback) {
if ((data.buffer || data) instanceof ArrayBuffer) {
data = getArrayBuffer(data);
}
this.extensions[PerMessageDeflate.extensionName].compress(data, fin, callback);
};
module.exports = Sender;
function writeUInt16BE(value, offset) {
this[offset] = (value & 0xff00)>>8;
this[offset+1] = value & 0xff;
}
function writeUInt32BE(value, offset) {
this[offset] = (value & 0xff000000)>>24;
this[offset+1] = (value & 0xff0000)>>16;
this[offset+2] = (value & 0xff00)>>8;
this[offset+3] = value & 0xff;
}
function getArrayBuffer(data) {
// data is either an ArrayBuffer or ArrayBufferView.
var array = new Uint8Array(data.buffer || data)
, l = data.byteLength || data.length
, o = data.byteOffset || 0
, buffer = new Buffer(l);
for (var i = 0; i < l; ++i) {
buffer[i] = array[o+i];
}
return buffer;
}
function getRandomMask() {
return crypto.randomBytes(4);
}

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node_modules/metro-inspector-proxy/node_modules/ws/lib/Validation.fallback.js generated vendored Normal file
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/*!
* ws: a node.js websocket client
* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
* MIT Licensed
*/
exports.Validation = {
isValidUTF8: function(buffer) {
return true;
}
};

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node_modules/metro-inspector-proxy/node_modules/ws/lib/Validation.js generated vendored Normal file
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'use strict';
/*!
* ws: a node.js websocket client
* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
* MIT Licensed
*/
var isValidUTF8;
try {
isValidUTF8 = require('utf-8-validate');
} catch (e) {
isValidUTF8 = require('./Validation.fallback');
}
module.exports = typeof isValidUTF8 === 'object'
? isValidUTF8.Validation.isValidUTF8
: isValidUTF8;

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node_modules/metro-inspector-proxy/node_modules/ws/lib/WebSocket.js generated vendored Normal file
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'use strict';
/*!
* ws: a node.js websocket client
* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
* MIT Licensed
*/
var url = require('url')
, util = require('util')
, http = require('http')
, https = require('https')
, crypto = require('crypto')
, stream = require('stream')
, Ultron = require('ultron')
, Options = require('options')
, Sender = require('./Sender')
, Receiver = require('./Receiver')
, SenderHixie = require('./Sender.hixie')
, ReceiverHixie = require('./Receiver.hixie')
, Extensions = require('./Extensions')
, PerMessageDeflate = require('./PerMessageDeflate')
, EventEmitter = require('events').EventEmitter;
/**
* Constants
*/
// Default protocol version
var protocolVersion = 13;
// Close timeout
var closeTimeout = 30 * 1000; // Allow 30 seconds to terminate the connection cleanly
/**
* WebSocket implementation
*
* @constructor
* @param {String} address Connection address.
* @param {String|Array} protocols WebSocket protocols.
* @param {Object} options Additional connection options.
* @api public
*/
function WebSocket(address, protocols, options) {
if (this instanceof WebSocket === false) {
return new WebSocket(address, protocols, options);
}
EventEmitter.call(this);
if (protocols && !Array.isArray(protocols) && 'object' === typeof protocols) {
// accept the "options" Object as the 2nd argument
options = protocols;
protocols = null;
}
if ('string' === typeof protocols) {
protocols = [ protocols ];
}
if (!Array.isArray(protocols)) {
protocols = [];
}
this._socket = null;
this._ultron = null;
this._closeReceived = false;
this.bytesReceived = 0;
this.readyState = null;
this.supports = {};
this.extensions = {};
this._binaryType = 'nodebuffer';
if (Array.isArray(address)) {
initAsServerClient.apply(this, address.concat(options));
} else {
initAsClient.apply(this, [address, protocols, options]);
}
}
/**
* Inherits from EventEmitter.
*/
util.inherits(WebSocket, EventEmitter);
/**
* Ready States
*/
["CONNECTING", "OPEN", "CLOSING", "CLOSED"].forEach(function each(state, index) {
WebSocket.prototype[state] = WebSocket[state] = index;
});
/**
* Gracefully closes the connection, after sending a description message to the server
*
* @param {Object} data to be sent to the server
* @api public
*/
WebSocket.prototype.close = function close(code, data) {
if (this.readyState === WebSocket.CLOSED) return;
if (this.readyState === WebSocket.CONNECTING) {
this.readyState = WebSocket.CLOSED;
return;
}
if (this.readyState === WebSocket.CLOSING) {
if (this._closeReceived && this._isServer) {
this.terminate();
}
return;
}
var self = this;
try {
this.readyState = WebSocket.CLOSING;
this._closeCode = code;
this._closeMessage = data;
var mask = !this._isServer;
this._sender.close(code, data, mask, function(err) {
if (err) self.emit('error', err);
if (self._closeReceived && self._isServer) {
self.terminate();
} else {
// ensure that the connection is cleaned up even when no response of closing handshake.
clearTimeout(self._closeTimer);
self._closeTimer = setTimeout(cleanupWebsocketResources.bind(self, true), closeTimeout);
}
});
} catch (e) {
this.emit('error', e);
}
};
/**
* Pause the client stream
*
* @api public
*/
WebSocket.prototype.pause = function pauser() {
if (this.readyState !== WebSocket.OPEN) throw new Error('not opened');
return this._socket.pause();
};
/**
* Sends a ping
*
* @param {Object} data to be sent to the server
* @param {Object} Members - mask: boolean, binary: boolean
* @param {boolean} dontFailWhenClosed indicates whether or not to throw if the connection isnt open
* @api public
*/
WebSocket.prototype.ping = function ping(data, options, dontFailWhenClosed) {
if (this.readyState !== WebSocket.OPEN) {
if (dontFailWhenClosed === true) return;
throw new Error('not opened');
}
options = options || {};
if (typeof options.mask === 'undefined') options.mask = !this._isServer;
this._sender.ping(data, options);
};
/**
* Sends a pong
*
* @param {Object} data to be sent to the server
* @param {Object} Members - mask: boolean, binary: boolean
* @param {boolean} dontFailWhenClosed indicates whether or not to throw if the connection isnt open
* @api public
*/
WebSocket.prototype.pong = function(data, options, dontFailWhenClosed) {
if (this.readyState !== WebSocket.OPEN) {
if (dontFailWhenClosed === true) return;
throw new Error('not opened');
}
options = options || {};
if (typeof options.mask === 'undefined') options.mask = !this._isServer;
this._sender.pong(data, options);
};
/**
* Resume the client stream
*
* @api public
*/
WebSocket.prototype.resume = function resume() {
if (this.readyState !== WebSocket.OPEN) throw new Error('not opened');
return this._socket.resume();
};
/**
* Sends a piece of data
*
* @param {Object} data to be sent to the server
* @param {Object} Members - mask: boolean, binary: boolean, compress: boolean
* @param {function} Optional callback which is executed after the send completes
* @api public
*/
WebSocket.prototype.send = function send(data, options, cb) {
if (typeof options === 'function') {
cb = options;
options = {};
}
if (this.readyState !== WebSocket.OPEN) {
if (typeof cb === 'function') cb(new Error('not opened'));
else throw new Error('not opened');
return;
}
if (!data) data = '';
if (this._queue) {
var self = this;
this._queue.push(function() { self.send(data, options, cb); });
return;
}
options = options || {};
options.fin = true;
if (typeof options.binary === 'undefined') {
options.binary = (data instanceof ArrayBuffer || data instanceof Buffer ||
data instanceof Uint8Array ||
data instanceof Uint16Array ||
data instanceof Uint32Array ||
data instanceof Int8Array ||
data instanceof Int16Array ||
data instanceof Int32Array ||
data instanceof Float32Array ||
data instanceof Float64Array);
}
if (typeof options.mask === 'undefined') options.mask = !this._isServer;
if (typeof options.compress === 'undefined') options.compress = true;
if (!this.extensions[PerMessageDeflate.extensionName]) {
options.compress = false;
}
var readable = typeof stream.Readable === 'function'
? stream.Readable
: stream.Stream;
if (data instanceof readable) {
startQueue(this);
var self = this;
sendStream(this, data, options, function send(error) {
process.nextTick(function tock() {
executeQueueSends(self);
});
if (typeof cb === 'function') cb(error);
});
} else {
this._sender.send(data, options, cb);
}
};
/**
* Streams data through calls to a user supplied function
*
* @param {Object} Members - mask: boolean, binary: boolean, compress: boolean
* @param {function} 'function (error, send)' which is executed on successive ticks of which send is 'function (data, final)'.
* @api public
*/
WebSocket.prototype.stream = function stream(options, cb) {
if (typeof options === 'function') {
cb = options;
options = {};
}
var self = this;
if (typeof cb !== 'function') throw new Error('callback must be provided');
if (this.readyState !== WebSocket.OPEN) {
if (typeof cb === 'function') cb(new Error('not opened'));
else throw new Error('not opened');
return;
}
if (this._queue) {
this._queue.push(function () { self.stream(options, cb); });
return;
}
options = options || {};
if (typeof options.mask === 'undefined') options.mask = !this._isServer;
if (typeof options.compress === 'undefined') options.compress = true;
if (!this.extensions[PerMessageDeflate.extensionName]) {
options.compress = false;
}
startQueue(this);
function send(data, final) {
try {
if (self.readyState !== WebSocket.OPEN) throw new Error('not opened');
options.fin = final === true;
self._sender.send(data, options);
if (!final) process.nextTick(cb.bind(null, null, send));
else executeQueueSends(self);
} catch (e) {
if (typeof cb === 'function') cb(e);
else {
delete self._queue;
self.emit('error', e);
}
}
}
process.nextTick(cb.bind(null, null, send));
};
/**
* Immediately shuts down the connection
*
* @api public
*/
WebSocket.prototype.terminate = function terminate() {
if (this.readyState === WebSocket.CLOSED) return;
if (this._socket) {
this.readyState = WebSocket.CLOSING;
// End the connection
try { this._socket.end(); }
catch (e) {
// Socket error during end() call, so just destroy it right now
cleanupWebsocketResources.call(this, true);
return;
}
// Add a timeout to ensure that the connection is completely
// cleaned up within 30 seconds, even if the clean close procedure
// fails for whatever reason
// First cleanup any pre-existing timeout from an earlier "terminate" call,
// if one exists. Otherwise terminate calls in quick succession will leak timeouts
// and hold the program open for `closeTimout` time.
if (this._closeTimer) { clearTimeout(this._closeTimer); }
this._closeTimer = setTimeout(cleanupWebsocketResources.bind(this, true), closeTimeout);
} else if (this.readyState === WebSocket.CONNECTING) {
cleanupWebsocketResources.call(this, true);
}
};
/**
* Expose bufferedAmount
*
* @api public
*/
Object.defineProperty(WebSocket.prototype, 'bufferedAmount', {
get: function get() {
var amount = 0;
if (this._socket) {
amount = this._socket.bufferSize || 0;
}
return amount;
}
});
/**
* Expose binaryType
*
* This deviates from the W3C interface since ws doesn't support the required
* default "blob" type (instead we define a custom "nodebuffer" type).
*
* @see http://dev.w3.org/html5/websockets/#the-websocket-interface
* @api public
*/
Object.defineProperty(WebSocket.prototype, 'binaryType', {
get: function get() {
return this._binaryType;
},
set: function set(type) {
if (type === 'arraybuffer' || type === 'nodebuffer')
this._binaryType = type;
else
throw new SyntaxError('unsupported binaryType: must be either "nodebuffer" or "arraybuffer"');
}
});
/**
* Emulates the W3C Browser based WebSocket interface using function members.
*
* @see http://dev.w3.org/html5/websockets/#the-websocket-interface
* @api public
*/
['open', 'error', 'close', 'message'].forEach(function(method) {
Object.defineProperty(WebSocket.prototype, 'on' + method, {
/**
* Returns the current listener
*
* @returns {Mixed} the set function or undefined
* @api public
*/
get: function get() {
var listener = this.listeners(method)[0];
return listener ? (listener._listener ? listener._listener : listener) : undefined;
},
/**
* Start listening for events
*
* @param {Function} listener the listener
* @returns {Mixed} the set function or undefined
* @api public
*/
set: function set(listener) {
this.removeAllListeners(method);
this.addEventListener(method, listener);
}
});
});
/**
* Emulates the W3C Browser based WebSocket interface using addEventListener.
*
* @see https://developer.mozilla.org/en/DOM/element.addEventListener
* @see http://dev.w3.org/html5/websockets/#the-websocket-interface
* @api public
*/
WebSocket.prototype.addEventListener = function(method, listener) {
var target = this;
function onMessage (data, flags) {
if (flags.binary && this.binaryType === 'arraybuffer')
data = new Uint8Array(data).buffer;
listener.call(target, new MessageEvent(data, !!flags.binary, target));
}
function onClose (code, message) {
listener.call(target, new CloseEvent(code, message, target));
}
function onError (event) {
event.type = 'error';
event.target = target;
listener.call(target, event);
}
function onOpen () {
listener.call(target, new OpenEvent(target));
}
if (typeof listener === 'function') {
if (method === 'message') {
// store a reference so we can return the original function from the
// addEventListener hook
onMessage._listener = listener;
this.on(method, onMessage);
} else if (method === 'close') {
// store a reference so we can return the original function from the
// addEventListener hook
onClose._listener = listener;
this.on(method, onClose);
} else if (method === 'error') {
// store a reference so we can return the original function from the
// addEventListener hook
onError._listener = listener;
this.on(method, onError);
} else if (method === 'open') {
// store a reference so we can return the original function from the
// addEventListener hook
onOpen._listener = listener;
this.on(method, onOpen);
} else {
this.on(method, listener);
}
}
};
module.exports = WebSocket;
module.exports.buildHostHeader = buildHostHeader
/**
* W3C MessageEvent
*
* @see http://www.w3.org/TR/html5/comms.html
* @constructor
* @api private
*/
function MessageEvent(dataArg, isBinary, target) {
this.type = 'message';
this.data = dataArg;
this.target = target;
this.binary = isBinary; // non-standard.
}
/**
* W3C CloseEvent
*
* @see http://www.w3.org/TR/html5/comms.html
* @constructor
* @api private
*/
function CloseEvent(code, reason, target) {
this.type = 'close';
this.wasClean = (typeof code === 'undefined' || code === 1000);
this.code = code;
this.reason = reason;
this.target = target;
}
/**
* W3C OpenEvent
*
* @see http://www.w3.org/TR/html5/comms.html
* @constructor
* @api private
*/
function OpenEvent(target) {
this.type = 'open';
this.target = target;
}
// Append port number to Host header, only if specified in the url
// and non-default
function buildHostHeader(isSecure, hostname, port) {
var headerHost = hostname;
if (hostname) {
if ((isSecure && (port != 443)) || (!isSecure && (port != 80))){
headerHost = headerHost + ':' + port;
}
}
return headerHost;
}
/**
* Entirely private apis,
* which may or may not be bound to a sepcific WebSocket instance.
*/
function initAsServerClient(req, socket, upgradeHead, options) {
options = new Options({
protocolVersion: protocolVersion,
protocol: null,
extensions: {},
maxPayload: 0
}).merge(options);
// expose state properties
this.protocol = options.value.protocol;
this.protocolVersion = options.value.protocolVersion;
this.extensions = options.value.extensions;
this.supports.binary = (this.protocolVersion !== 'hixie-76');
this.upgradeReq = req;
this.readyState = WebSocket.CONNECTING;
this._isServer = true;
this.maxPayload = options.value.maxPayload;
// establish connection
if (options.value.protocolVersion === 'hixie-76') {
establishConnection.call(this, ReceiverHixie, SenderHixie, socket, upgradeHead);
} else {
establishConnection.call(this, Receiver, Sender, socket, upgradeHead);
}
}
function initAsClient(address, protocols, options) {
options = new Options({
origin: null,
protocolVersion: protocolVersion,
host: null,
headers: null,
protocol: protocols.join(','),
agent: null,
// ssl-related options
pfx: null,
key: null,
passphrase: null,
cert: null,
ca: null,
ciphers: null,
rejectUnauthorized: null,
perMessageDeflate: true,
localAddress: null
}).merge(options);
if (options.value.protocolVersion !== 8 && options.value.protocolVersion !== 13) {
throw new Error('unsupported protocol version');
}
// verify URL and establish http class
var serverUrl = url.parse(address);
var isUnixSocket = serverUrl.protocol === 'ws+unix:';
if (!serverUrl.host && !isUnixSocket) throw new Error('invalid url');
var isSecure = serverUrl.protocol === 'wss:' || serverUrl.protocol === 'https:';
var httpObj = isSecure ? https : http;
var port = serverUrl.port || (isSecure ? 443 : 80);
var auth = serverUrl.auth;
// prepare extensions
var extensionsOffer = {};
var perMessageDeflate;
if (options.value.perMessageDeflate) {
perMessageDeflate = new PerMessageDeflate(typeof options.value.perMessageDeflate !== true ? options.value.perMessageDeflate : {}, false);
extensionsOffer[PerMessageDeflate.extensionName] = perMessageDeflate.offer();
}
// expose state properties
this._isServer = false;
this.url = address;
this.protocolVersion = options.value.protocolVersion;
this.supports.binary = (this.protocolVersion !== 'hixie-76');
// begin handshake
var key = new Buffer(options.value.protocolVersion + '-' + Date.now()).toString('base64');
var shasum = crypto.createHash('sha1');
shasum.update(key + '258EAFA5-E914-47DA-95CA-C5AB0DC85B11');
var expectedServerKey = shasum.digest('base64');
var agent = options.value.agent;
var headerHost = buildHostHeader(isSecure, serverUrl.hostname, port)
var requestOptions = {
port: port,
host: serverUrl.hostname,
headers: {
'Connection': 'Upgrade',
'Upgrade': 'websocket',
'Host': headerHost,
'Sec-WebSocket-Version': options.value.protocolVersion,
'Sec-WebSocket-Key': key
}
};
// If we have basic auth.
if (auth) {
requestOptions.headers.Authorization = 'Basic ' + new Buffer(auth).toString('base64');
}
if (options.value.protocol) {
requestOptions.headers['Sec-WebSocket-Protocol'] = options.value.protocol;
}
if (options.value.host) {
requestOptions.headers.Host = options.value.host;
}
if (options.value.headers) {
for (var header in options.value.headers) {
if (options.value.headers.hasOwnProperty(header)) {
requestOptions.headers[header] = options.value.headers[header];
}
}
}
if (Object.keys(extensionsOffer).length) {
requestOptions.headers['Sec-WebSocket-Extensions'] = Extensions.format(extensionsOffer);
}
if (options.isDefinedAndNonNull('pfx')
|| options.isDefinedAndNonNull('key')
|| options.isDefinedAndNonNull('passphrase')
|| options.isDefinedAndNonNull('cert')
|| options.isDefinedAndNonNull('ca')
|| options.isDefinedAndNonNull('ciphers')
|| options.isDefinedAndNonNull('rejectUnauthorized')) {
if (options.isDefinedAndNonNull('pfx')) requestOptions.pfx = options.value.pfx;
if (options.isDefinedAndNonNull('key')) requestOptions.key = options.value.key;
if (options.isDefinedAndNonNull('passphrase')) requestOptions.passphrase = options.value.passphrase;
if (options.isDefinedAndNonNull('cert')) requestOptions.cert = options.value.cert;
if (options.isDefinedAndNonNull('ca')) requestOptions.ca = options.value.ca;
if (options.isDefinedAndNonNull('ciphers')) requestOptions.ciphers = options.value.ciphers;
if (options.isDefinedAndNonNull('rejectUnauthorized')) requestOptions.rejectUnauthorized = options.value.rejectUnauthorized;
if (!agent) {
// global agent ignores client side certificates
agent = new httpObj.Agent(requestOptions);
}
}
requestOptions.path = serverUrl.path || '/';
if (agent) {
requestOptions.agent = agent;
}
if (isUnixSocket) {
requestOptions.socketPath = serverUrl.pathname;
}
if (options.value.localAddress) {
requestOptions.localAddress = options.value.localAddress;
}
if (options.value.origin) {
if (options.value.protocolVersion < 13) requestOptions.headers['Sec-WebSocket-Origin'] = options.value.origin;
else requestOptions.headers.Origin = options.value.origin;
}
var self = this;
var req = httpObj.request(requestOptions);
req.on('error', function onerror(error) {
self.emit('error', error);
cleanupWebsocketResources.call(self, error);
});
req.once('response', function response(res) {
var error;
if (!self.emit('unexpected-response', req, res)) {
error = new Error('unexpected server response (' + res.statusCode + ')');
req.abort();
self.emit('error', error);
}
cleanupWebsocketResources.call(self, error);
});
req.once('upgrade', function upgrade(res, socket, upgradeHead) {
if (self.readyState === WebSocket.CLOSED) {
// client closed before server accepted connection
self.emit('close');
self.removeAllListeners();
socket.end();
return;
}
var serverKey = res.headers['sec-websocket-accept'];
if (typeof serverKey === 'undefined' || serverKey !== expectedServerKey) {
self.emit('error', 'invalid server key');
self.removeAllListeners();
socket.end();
return;
}
var serverProt = res.headers['sec-websocket-protocol'];
var protList = (options.value.protocol || "").split(/, */);
var protError = null;
if (!options.value.protocol && serverProt) {
protError = 'server sent a subprotocol even though none requested';
} else if (options.value.protocol && !serverProt) {
protError = 'server sent no subprotocol even though requested';
} else if (serverProt && protList.indexOf(serverProt) === -1) {
protError = 'server responded with an invalid protocol';
}
if (protError) {
self.emit('error', protError);
self.removeAllListeners();
socket.end();
return;
} else if (serverProt) {
self.protocol = serverProt;
}
var serverExtensions = Extensions.parse(res.headers['sec-websocket-extensions']);
if (perMessageDeflate && serverExtensions[PerMessageDeflate.extensionName]) {
try {
perMessageDeflate.accept(serverExtensions[PerMessageDeflate.extensionName]);
} catch (err) {
self.emit('error', 'invalid extension parameter');
self.removeAllListeners();
socket.end();
return;
}
self.extensions[PerMessageDeflate.extensionName] = perMessageDeflate;
}
establishConnection.call(self, Receiver, Sender, socket, upgradeHead);
// perform cleanup on http resources
req.removeAllListeners();
req = null;
agent = null;
});
req.end();
this.readyState = WebSocket.CONNECTING;
}
function establishConnection(ReceiverClass, SenderClass, socket, upgradeHead) {
var ultron = this._ultron = new Ultron(socket)
, called = false
, self = this;
socket.setTimeout(0);
socket.setNoDelay(true);
this._receiver = new ReceiverClass(this.extensions,this.maxPayload);
this._socket = socket;
// socket cleanup handlers
ultron.on('end', cleanupWebsocketResources.bind(this));
ultron.on('close', cleanupWebsocketResources.bind(this));
ultron.on('error', cleanupWebsocketResources.bind(this));
// ensure that the upgradeHead is added to the receiver
function firstHandler(data) {
if (called || self.readyState === WebSocket.CLOSED) return;
called = true;
socket.removeListener('data', firstHandler);
ultron.on('data', realHandler);
if (upgradeHead && upgradeHead.length > 0) {
realHandler(upgradeHead);
upgradeHead = null;
}
if (data) realHandler(data);
}
// subsequent packets are pushed straight to the receiver
function realHandler(data) {
self.bytesReceived += data.length;
self._receiver.add(data);
}
ultron.on('data', firstHandler);
// if data was passed along with the http upgrade,
// this will schedule a push of that on to the receiver.
// this has to be done on next tick, since the caller
// hasn't had a chance to set event handlers on this client
// object yet.
process.nextTick(firstHandler);
// receiver event handlers
self._receiver.ontext = function ontext(data, flags) {
flags = flags || {};
self.emit('message', data, flags);
};
self._receiver.onbinary = function onbinary(data, flags) {
flags = flags || {};
flags.binary = true;
self.emit('message', data, flags);
};
self._receiver.onping = function onping(data, flags) {
flags = flags || {};
self.pong(data, {
mask: !self._isServer,
binary: flags.binary === true
}, true);
self.emit('ping', data, flags);
};
self._receiver.onpong = function onpong(data, flags) {
self.emit('pong', data, flags || {});
};
self._receiver.onclose = function onclose(code, data, flags) {
flags = flags || {};
self._closeReceived = true;
self.close(code, data);
};
self._receiver.onerror = function onerror(reason, errorCode) {
// close the connection when the receiver reports a HyBi error code
self.close(typeof errorCode !== 'undefined' ? errorCode : 1002, '');
self.emit('error', (reason instanceof Error) ? reason : (new Error(reason)));
};
// finalize the client
this._sender = new SenderClass(socket, this.extensions);
this._sender.on('error', function onerror(error) {
self.close(1002, '');
self.emit('error', error);
});
this.readyState = WebSocket.OPEN;
this.emit('open');
}
function startQueue(instance) {
instance._queue = instance._queue || [];
}
function executeQueueSends(instance) {
var queue = instance._queue;
if (typeof queue === 'undefined') return;
delete instance._queue;
for (var i = 0, l = queue.length; i < l; ++i) {
queue[i]();
}
}
function sendStream(instance, stream, options, cb) {
stream.on('data', function incoming(data) {
if (instance.readyState !== WebSocket.OPEN) {
if (typeof cb === 'function') cb(new Error('not opened'));
else {
delete instance._queue;
instance.emit('error', new Error('not opened'));
}
return;
}
options.fin = false;
instance._sender.send(data, options);
});
stream.on('end', function end() {
if (instance.readyState !== WebSocket.OPEN) {
if (typeof cb === 'function') cb(new Error('not opened'));
else {
delete instance._queue;
instance.emit('error', new Error('not opened'));
}
return;
}
options.fin = true;
instance._sender.send(null, options);
if (typeof cb === 'function') cb(null);
});
}
function cleanupWebsocketResources(error) {
if (this.readyState === WebSocket.CLOSED) return;
this.readyState = WebSocket.CLOSED;
clearTimeout(this._closeTimer);
this._closeTimer = null;
// If the connection was closed abnormally (with an error), or if
// the close control frame was not received then the close code
// must default to 1006.
if (error || !this._closeReceived) {
this._closeCode = 1006;
}
this.emit('close', this._closeCode || 1000, this._closeMessage || '');
if (this._socket) {
if (this._ultron) this._ultron.destroy();
this._socket.on('error', function onerror() {
try { this.destroy(); }
catch (e) {}
});
try {
if (!error) this._socket.end();
else this._socket.destroy();
} catch (e) { /* Ignore termination errors */ }
this._socket = null;
this._ultron = null;
}
if (this._sender) {
this._sender.removeAllListeners();
this._sender = null;
}
if (this._receiver) {
this._receiver.cleanup();
this._receiver = null;
}
if (this.extensions[PerMessageDeflate.extensionName]) {
this.extensions[PerMessageDeflate.extensionName].cleanup();
}
this.extensions = null;
this.removeAllListeners();
this.on('error', function onerror() {}); // catch all errors after this
delete this._queue;
}

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node_modules/metro-inspector-proxy/node_modules/ws/lib/WebSocketServer.js generated vendored Normal file
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/*!
* ws: a node.js websocket client
* Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
* MIT Licensed
*/
var util = require('util')
, events = require('events')
, http = require('http')
, crypto = require('crypto')
, Options = require('options')
, WebSocket = require('./WebSocket')
, Extensions = require('./Extensions')
, PerMessageDeflate = require('./PerMessageDeflate')
, tls = require('tls')
, url = require('url');
/**
* WebSocket Server implementation
*/
function WebSocketServer(options, callback) {
if (this instanceof WebSocketServer === false) {
return new WebSocketServer(options, callback);
}
events.EventEmitter.call(this);
options = new Options({
host: '0.0.0.0',
port: null,
server: null,
verifyClient: null,
handleProtocols: null,
path: null,
noServer: false,
disableHixie: false,
clientTracking: true,
perMessageDeflate: true,
maxPayload: 100 * 1024 * 1024
}).merge(options);
if (!options.isDefinedAndNonNull('port') && !options.isDefinedAndNonNull('server') && !options.value.noServer) {
throw new TypeError('`port` or a `server` must be provided');
}
var self = this;
if (options.isDefinedAndNonNull('port')) {
this._server = http.createServer(function (req, res) {
var body = http.STATUS_CODES[426];
res.writeHead(426, {
'Content-Length': body.length,
'Content-Type': 'text/plain'
});
res.end(body);
});
this._server.allowHalfOpen = false;
this._server.listen(options.value.port, options.value.host, callback);
this._closeServer = function() { if (self._server) self._server.close(); };
}
else if (options.value.server) {
this._server = options.value.server;
if (options.value.path) {
// take note of the path, to avoid collisions when multiple websocket servers are
// listening on the same http server
if (this._server._webSocketPaths && options.value.server._webSocketPaths[options.value.path]) {
throw new Error('two instances of WebSocketServer cannot listen on the same http server path');
}
if (typeof this._server._webSocketPaths !== 'object') {
this._server._webSocketPaths = {};
}
this._server._webSocketPaths[options.value.path] = 1;
}
}
if (this._server) {
this._onceServerListening = function() { self.emit('listening'); };
this._server.once('listening', this._onceServerListening);
}
if (typeof this._server != 'undefined') {
this._onServerError = function(error) { self.emit('error', error) };
this._server.on('error', this._onServerError);
this._onServerUpgrade = function(req, socket, upgradeHead) {
//copy upgradeHead to avoid retention of large slab buffers used in node core
var head = new Buffer(upgradeHead.length);
upgradeHead.copy(head);
self.handleUpgrade(req, socket, head, function(client) {
self.emit('connection'+req.url, client);
self.emit('connection', client);
});
};
this._server.on('upgrade', this._onServerUpgrade);
}
this.options = options.value;
this.path = options.value.path;
this.clients = [];
}
/**
* Inherits from EventEmitter.
*/
util.inherits(WebSocketServer, events.EventEmitter);
/**
* Immediately shuts down the connection.
*
* @api public
*/
WebSocketServer.prototype.close = function(callback) {
// terminate all associated clients
var error = null;
try {
for (var i = 0, l = this.clients.length; i < l; ++i) {
this.clients[i].terminate();
}
}
catch (e) {
error = e;
}
// remove path descriptor, if any
if (this.path && this._server._webSocketPaths) {
delete this._server._webSocketPaths[this.path];
if (Object.keys(this._server._webSocketPaths).length == 0) {
delete this._server._webSocketPaths;
}
}
// close the http server if it was internally created
try {
if (typeof this._closeServer !== 'undefined') {
this._closeServer();
}
}
finally {
if (this._server) {
this._server.removeListener('listening', this._onceServerListening);
this._server.removeListener('error', this._onServerError);
this._server.removeListener('upgrade', this._onServerUpgrade);
}
delete this._server;
}
if(callback)
callback(error);
else if(error)
throw error;
}
/**
* Handle a HTTP Upgrade request.
*
* @api public
*/
WebSocketServer.prototype.handleUpgrade = function(req, socket, upgradeHead, cb) {
// check for wrong path
if (this.options.path) {
var u = url.parse(req.url);
if (u && u.pathname !== this.options.path) return;
}
if (typeof req.headers.upgrade === 'undefined' || req.headers.upgrade.toLowerCase() !== 'websocket') {
abortConnection(socket, 400, 'Bad Request');
return;
}
if (req.headers['sec-websocket-key1']) handleHixieUpgrade.apply(this, arguments);
else handleHybiUpgrade.apply(this, arguments);
}
module.exports = WebSocketServer;
/**
* Entirely private apis,
* which may or may not be bound to a sepcific WebSocket instance.
*/
function handleHybiUpgrade(req, socket, upgradeHead, cb) {
// handle premature socket errors
var errorHandler = function() {
try { socket.destroy(); } catch (e) {}
}
socket.on('error', errorHandler);
// verify key presence
if (!req.headers['sec-websocket-key']) {
abortConnection(socket, 400, 'Bad Request');
return;
}
// verify version
var version = parseInt(req.headers['sec-websocket-version']);
if ([8, 13].indexOf(version) === -1) {
abortConnection(socket, 400, 'Bad Request');
return;
}
// verify protocol
var protocols = req.headers['sec-websocket-protocol'];
// verify client
var origin = version < 13 ?
req.headers['sec-websocket-origin'] :
req.headers['origin'];
// handle extensions offer
var extensionsOffer = Extensions.parse(req.headers['sec-websocket-extensions']);
// handler to call when the connection sequence completes
var self = this;
var completeHybiUpgrade2 = function(protocol) {
// calc key
var key = req.headers['sec-websocket-key'];
var shasum = crypto.createHash('sha1');
shasum.update(key + "258EAFA5-E914-47DA-95CA-C5AB0DC85B11");
key = shasum.digest('base64');
var headers = [
'HTTP/1.1 101 Switching Protocols'
, 'Upgrade: websocket'
, 'Connection: Upgrade'
, 'Sec-WebSocket-Accept: ' + key
];
if (typeof protocol != 'undefined') {
headers.push('Sec-WebSocket-Protocol: ' + protocol);
}
var extensions = {};
try {
extensions = acceptExtensions.call(self, extensionsOffer);
} catch (err) {
abortConnection(socket, 400, 'Bad Request');
return;
}
if (Object.keys(extensions).length) {
var serverExtensions = {};
Object.keys(extensions).forEach(function(token) {
serverExtensions[token] = [extensions[token].params]
});
headers.push('Sec-WebSocket-Extensions: ' + Extensions.format(serverExtensions));
}
// allows external modification/inspection of handshake headers
self.emit('headers', headers);
socket.setTimeout(0);
socket.setNoDelay(true);
try {
socket.write(headers.concat('', '').join('\r\n'));
}
catch (e) {
// if the upgrade write fails, shut the connection down hard
try { socket.destroy(); } catch (e) {}
return;
}
var client = new WebSocket([req, socket, upgradeHead], {
protocolVersion: version,
protocol: protocol,
extensions: extensions,
maxPayload: self.options.maxPayload
});
if (self.options.clientTracking) {
self.clients.push(client);
client.on('close', function() {
var index = self.clients.indexOf(client);
if (index != -1) {
self.clients.splice(index, 1);
}
});
}
// signal upgrade complete
socket.removeListener('error', errorHandler);
cb(client);
}
// optionally call external protocol selection handler before
// calling completeHybiUpgrade2
var completeHybiUpgrade1 = function() {
// choose from the sub-protocols
if (typeof self.options.handleProtocols == 'function') {
var protList = (protocols || "").split(/, */);
var callbackCalled = false;
var res = self.options.handleProtocols(protList, function(result, protocol) {
callbackCalled = true;
if (!result) abortConnection(socket, 401, 'Unauthorized');
else completeHybiUpgrade2(protocol);
});
if (!callbackCalled) {
// the handleProtocols handler never called our callback
abortConnection(socket, 501, 'Could not process protocols');
}
return;
} else {
if (typeof protocols !== 'undefined') {
completeHybiUpgrade2(protocols.split(/, */)[0]);
}
else {
completeHybiUpgrade2();
}
}
}
// optionally call external client verification handler
if (typeof this.options.verifyClient == 'function') {
var info = {
origin: origin,
secure: typeof req.connection.authorized !== 'undefined' || typeof req.connection.encrypted !== 'undefined',
req: req
};
if (this.options.verifyClient.length == 2) {
this.options.verifyClient(info, function(result, code, name) {
if (typeof code === 'undefined') code = 401;
if (typeof name === 'undefined') name = http.STATUS_CODES[code];
if (!result) abortConnection(socket, code, name);
else completeHybiUpgrade1();
});
return;
}
else if (!this.options.verifyClient(info)) {
abortConnection(socket, 401, 'Unauthorized');
return;
}
}
completeHybiUpgrade1();
}
function handleHixieUpgrade(req, socket, upgradeHead, cb) {
// handle premature socket errors
var errorHandler = function() {
try { socket.destroy(); } catch (e) {}
}
socket.on('error', errorHandler);
// bail if options prevent hixie
if (this.options.disableHixie) {
abortConnection(socket, 401, 'Hixie support disabled');
return;
}
// verify key presence
if (!req.headers['sec-websocket-key2']) {
abortConnection(socket, 400, 'Bad Request');
return;
}
var origin = req.headers['origin']
, self = this;
// setup handshake completion to run after client has been verified
var onClientVerified = function() {
var wshost;
if (!req.headers['x-forwarded-host'])
wshost = req.headers.host;
else
wshost = req.headers['x-forwarded-host'];
var location = ((req.headers['x-forwarded-proto'] === 'https' || socket.encrypted) ? 'wss' : 'ws') + '://' + wshost + req.url
, protocol = req.headers['sec-websocket-protocol'];
// build the response header and return a Buffer
var buildResponseHeader = function() {
var headers = [
'HTTP/1.1 101 Switching Protocols'
, 'Upgrade: WebSocket'
, 'Connection: Upgrade'
, 'Sec-WebSocket-Location: ' + location
];
if (typeof protocol != 'undefined') headers.push('Sec-WebSocket-Protocol: ' + protocol);
if (typeof origin != 'undefined') headers.push('Sec-WebSocket-Origin: ' + origin);
return new Buffer(headers.concat('', '').join('\r\n'));
};
// send handshake response before receiving the nonce
var handshakeResponse = function() {
socket.setTimeout(0);
socket.setNoDelay(true);
var headerBuffer = buildResponseHeader();
try {
socket.write(headerBuffer, 'binary', function(err) {
// remove listener if there was an error
if (err) socket.removeListener('data', handler);
return;
});
} catch (e) {
try { socket.destroy(); } catch (e) {}
return;
};
};
// handshake completion code to run once nonce has been successfully retrieved
var completeHandshake = function(nonce, rest, headerBuffer) {
// calculate key
var k1 = req.headers['sec-websocket-key1']
, k2 = req.headers['sec-websocket-key2']
, md5 = crypto.createHash('md5');
[k1, k2].forEach(function (k) {
var n = parseInt(k.replace(/[^\d]/g, ''))
, spaces = k.replace(/[^ ]/g, '').length;
if (spaces === 0 || n % spaces !== 0){
abortConnection(socket, 400, 'Bad Request');
return;
}
n /= spaces;
md5.update(String.fromCharCode(
n >> 24 & 0xFF,
n >> 16 & 0xFF,
n >> 8 & 0xFF,
n & 0xFF));
});
md5.update(nonce.toString('binary'));
socket.setTimeout(0);
socket.setNoDelay(true);
try {
var hashBuffer = new Buffer(md5.digest('binary'), 'binary');
var handshakeBuffer = new Buffer(headerBuffer.length + hashBuffer.length);
headerBuffer.copy(handshakeBuffer, 0);
hashBuffer.copy(handshakeBuffer, headerBuffer.length);
// do a single write, which - upon success - causes a new client websocket to be setup
socket.write(handshakeBuffer, 'binary', function(err) {
if (err) return; // do not create client if an error happens
var client = new WebSocket([req, socket, rest], {
protocolVersion: 'hixie-76',
protocol: protocol
});
if (self.options.clientTracking) {
self.clients.push(client);
client.on('close', function() {
var index = self.clients.indexOf(client);
if (index != -1) {
self.clients.splice(index, 1);
}
});
}
// signal upgrade complete
socket.removeListener('error', errorHandler);
cb(client);
});
}
catch (e) {
try { socket.destroy(); } catch (e) {}
return;
}
}
// retrieve nonce
var nonceLength = 8;
if (upgradeHead && upgradeHead.length >= nonceLength) {
var nonce = upgradeHead.slice(0, nonceLength);
var rest = upgradeHead.length > nonceLength ? upgradeHead.slice(nonceLength) : null;
completeHandshake.call(self, nonce, rest, buildResponseHeader());
}
else {
// nonce not present in upgradeHead
var nonce = new Buffer(nonceLength);
upgradeHead.copy(nonce, 0);
var received = upgradeHead.length;
var rest = null;
var handler = function (data) {
var toRead = Math.min(data.length, nonceLength - received);
if (toRead === 0) return;
data.copy(nonce, received, 0, toRead);
received += toRead;
if (received == nonceLength) {
socket.removeListener('data', handler);
if (toRead < data.length) rest = data.slice(toRead);
// complete the handshake but send empty buffer for headers since they have already been sent
completeHandshake.call(self, nonce, rest, new Buffer(0));
}
}
// handle additional data as we receive it
socket.on('data', handler);
// send header response before we have the nonce to fix haproxy buffering
handshakeResponse();
}
}
// verify client
if (typeof this.options.verifyClient == 'function') {
var info = {
origin: origin,
secure: typeof req.connection.authorized !== 'undefined' || typeof req.connection.encrypted !== 'undefined',
req: req
};
if (this.options.verifyClient.length == 2) {
var self = this;
this.options.verifyClient(info, function(result, code, name) {
if (typeof code === 'undefined') code = 401;
if (typeof name === 'undefined') name = http.STATUS_CODES[code];
if (!result) abortConnection(socket, code, name);
else onClientVerified.apply(self);
});
return;
}
else if (!this.options.verifyClient(info)) {
abortConnection(socket, 401, 'Unauthorized');
return;
}
}
// no client verification required
onClientVerified();
}
function acceptExtensions(offer) {
var extensions = {};
var options = this.options.perMessageDeflate;
var maxPayload = this.options.maxPayload;
if (options && offer[PerMessageDeflate.extensionName]) {
var perMessageDeflate = new PerMessageDeflate(options !== true ? options : {}, true, maxPayload);
perMessageDeflate.accept(offer[PerMessageDeflate.extensionName]);
extensions[PerMessageDeflate.extensionName] = perMessageDeflate;
}
return extensions;
}
function abortConnection(socket, code, name) {
try {
var response = [
'HTTP/1.1 ' + code + ' ' + name,
'Content-type: text/html'
];
socket.write(response.concat('', '').join('\r\n'));
}
catch (e) { /* ignore errors - we've aborted this connection */ }
finally {
// ensure that an early aborted connection is shut down completely
try { socket.destroy(); } catch (e) {}
}
}

42
node_modules/metro-inspector-proxy/node_modules/ws/package.json generated vendored Normal file
View File

@ -0,0 +1,42 @@
{
"name": "ws",
"description": "Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js",
"version": "1.1.5",
"keywords": [
"Hixie",
"HyBi",
"Push",
"RFC-6455",
"WebSocket",
"WebSockets",
"real-time"
],
"homepage": "https://github.com/websockets/ws",
"bugs": "https://github.com/websockets/ws/issues",
"repository": "websockets/ws",
"author": "Einar Otto Stangvik <einaros@gmail.com> (http://2x.io)",
"license": "MIT",
"main": "index.js",
"files": [
"index.js",
"lib"
],
"scripts": {
"test": "make test"
},
"dependencies": {
"options": ">=0.0.5",
"ultron": "1.0.x"
},
"devDependencies": {
"ansi": "0.3.x",
"benchmark": "0.3.x",
"bufferutil": "1.2.x",
"expect.js": "0.3.x",
"istanbul": "^0.4.1",
"mocha": "2.3.x",
"should": "8.0.x",
"tinycolor": "0.0.x",
"utf-8-validate": "1.2.x"
}
}

507
node_modules/metro-inspector-proxy/node_modules/yargs-parser/CHANGELOG.md generated vendored Normal file
View File

@ -0,0 +1,507 @@
# Changelog
All notable changes to this project will be documented in this file. See [standard-version](https://github.com/conventional-changelog/standard-version) for commit guidelines.
## [15.0.0](https://github.com/yargs/yargs-parser/compare/v14.0.0...v15.0.0) (2019-10-07)
### Features
* rework `collect-unknown-options` into `unknown-options-as-args`, providing more comprehensive functionality ([ef771ca](https://github.com/yargs/yargs-parser/commit/ef771ca))
### BREAKING CHANGES
* rework `collect-unknown-options` into `unknown-options-as-args`, providing more comprehensive functionality
## [14.0.0](https://github.com/yargs/yargs-parser/compare/v13.1.1...v14.0.0) (2019-09-06)
### Bug Fixes
* boolean arrays with default values ([#185](https://github.com/yargs/yargs-parser/issues/185)) ([7d42572](https://github.com/yargs/yargs-parser/commit/7d42572))
* boolean now behaves the same as other array types ([#184](https://github.com/yargs/yargs-parser/issues/184)) ([17ca3bd](https://github.com/yargs/yargs-parser/commit/17ca3bd))
* eatNargs() for 'opt.narg === 0' and boolean typed options ([#188](https://github.com/yargs/yargs-parser/issues/188)) ([c5a1db0](https://github.com/yargs/yargs-parser/commit/c5a1db0))
* maybeCoerceNumber now takes precedence over coerce return value ([#182](https://github.com/yargs/yargs-parser/issues/182)) ([2f26436](https://github.com/yargs/yargs-parser/commit/2f26436))
* take into account aliases when appending arrays from config object ([#199](https://github.com/yargs/yargs-parser/issues/199)) ([f8a2d3f](https://github.com/yargs/yargs-parser/commit/f8a2d3f))
### Features
* add configuration option to "collect-unknown-options" ([#181](https://github.com/yargs/yargs-parser/issues/181)) ([7909cc4](https://github.com/yargs/yargs-parser/commit/7909cc4))
* maybeCoerceNumber() now takes into account arrays ([#187](https://github.com/yargs/yargs-parser/issues/187)) ([31c204b](https://github.com/yargs/yargs-parser/commit/31c204b))
### BREAKING CHANGES
* unless "parse-numbers" is set to "false", arrays of numeric strings are now parsed as numbers, rather than strings.
* we have dropped the broken "defaulted" functionality; we would like to revisit adding this in the future.
* maybeCoerceNumber now takes precedence over coerce return value (#182)
### [13.1.1](https://www.github.com/yargs/yargs-parser/compare/v13.1.0...v13.1.1) (2019-06-10)
### Bug Fixes
* convert values to strings when tokenizing ([#167](https://www.github.com/yargs/yargs-parser/issues/167)) ([57b7883](https://www.github.com/yargs/yargs-parser/commit/57b7883))
* nargs should allow duplicates when duplicate-arguments-array=false ([#164](https://www.github.com/yargs/yargs-parser/issues/164)) ([47ccb0b](https://www.github.com/yargs/yargs-parser/commit/47ccb0b))
* should populate "_" when given config with "short-option-groups" false ([#179](https://www.github.com/yargs/yargs-parser/issues/179)) ([6055974](https://www.github.com/yargs/yargs-parser/commit/6055974))
## [13.1.0](https://github.com/yargs/yargs-parser/compare/v13.0.0...v13.1.0) (2019-05-05)
### Features
* add `strip-aliased` and `strip-dashed` configuration options. ([#172](https://github.com/yargs/yargs-parser/issues/172)) ([a3936aa](https://github.com/yargs/yargs-parser/commit/a3936aa))
* support boolean which do not consume next argument. ([#171](https://github.com/yargs/yargs-parser/issues/171)) ([0ae7fcb](https://github.com/yargs/yargs-parser/commit/0ae7fcb))
<a name="13.0.0"></a>
# [13.0.0](https://github.com/yargs/yargs-parser/compare/v12.0.0...v13.0.0) (2019-02-02)
### Features
* don't coerce number from string with leading '0' or '+' ([#158](https://github.com/yargs/yargs-parser/issues/158)) ([18d0fd5](https://github.com/yargs/yargs-parser/commit/18d0fd5))
### BREAKING CHANGES
* options with leading '+' or '0' now parse as strings
<a name="12.0.0"></a>
# [12.0.0](https://github.com/yargs/yargs-parser/compare/v11.1.1...v12.0.0) (2019-01-29)
### Bug Fixes
* better handling of quoted strings ([#153](https://github.com/yargs/yargs-parser/issues/153)) ([2fb71b2](https://github.com/yargs/yargs-parser/commit/2fb71b2))
### Features
* default value is now used if no right-hand value provided for numbers/strings ([#156](https://github.com/yargs/yargs-parser/issues/156)) ([5a7c46a](https://github.com/yargs/yargs-parser/commit/5a7c46a))
### BREAKING CHANGES
* a flag with no right-hand value no longer populates defaulted options with `undefined`.
* quotes at beginning and endings of strings are not removed during parsing.
<a name="11.1.1"></a>
## [11.1.1](https://github.com/yargs/yargs-parser/compare/v11.1.0...v11.1.1) (2018-11-19)
### Bug Fixes
* ensure empty string is added into argv._ ([#140](https://github.com/yargs/yargs-parser/issues/140)) ([79cda98](https://github.com/yargs/yargs-parser/commit/79cda98))
### Reverts
* make requiresArg work in conjunction with arrays ([#136](https://github.com/yargs/yargs-parser/issues/136)) ([f4a3063](https://github.com/yargs/yargs-parser/commit/f4a3063))
<a name="11.1.0"></a>
# [11.1.0](https://github.com/yargs/yargs-parser/compare/v11.0.0...v11.1.0) (2018-11-10)
### Bug Fixes
* handling of one char alias ([#139](https://github.com/yargs/yargs-parser/issues/139)) ([ee56e31](https://github.com/yargs/yargs-parser/commit/ee56e31))
### Features
* add halt-at-non-option configuration option ([#130](https://github.com/yargs/yargs-parser/issues/130)) ([a849fce](https://github.com/yargs/yargs-parser/commit/a849fce))
<a name="11.0.0"></a>
# [11.0.0](https://github.com/yargs/yargs-parser/compare/v10.1.0...v11.0.0) (2018-10-06)
### Bug Fixes
* flatten-duplicate-arrays:false for more than 2 arrays ([#128](https://github.com/yargs/yargs-parser/issues/128)) ([2bc395f](https://github.com/yargs/yargs-parser/commit/2bc395f))
* hyphenated flags combined with dot notation broke parsing ([#131](https://github.com/yargs/yargs-parser/issues/131)) ([dc788da](https://github.com/yargs/yargs-parser/commit/dc788da))
* make requiresArg work in conjunction with arrays ([#136](https://github.com/yargs/yargs-parser/issues/136)) ([77ae1d4](https://github.com/yargs/yargs-parser/commit/77ae1d4))
### Chores
* update dependencies ([6dc42a1](https://github.com/yargs/yargs-parser/commit/6dc42a1))
### Features
* also add camelCase array options ([#125](https://github.com/yargs/yargs-parser/issues/125)) ([08c0117](https://github.com/yargs/yargs-parser/commit/08c0117))
* array.type can now be provided, supporting coercion ([#132](https://github.com/yargs/yargs-parser/issues/132)) ([4b8cfce](https://github.com/yargs/yargs-parser/commit/4b8cfce))
### BREAKING CHANGES
* drops Node 4 support
* the argv object is now populated differently (correctly) when hyphens and dot notation are used in conjunction.
<a name="10.1.0"></a>
# [10.1.0](https://github.com/yargs/yargs-parser/compare/v10.0.0...v10.1.0) (2018-06-29)
### Features
* add `set-placeholder-key` configuration ([#123](https://github.com/yargs/yargs-parser/issues/123)) ([19386ee](https://github.com/yargs/yargs-parser/commit/19386ee))
<a name="10.0.0"></a>
# [10.0.0](https://github.com/yargs/yargs-parser/compare/v9.0.2...v10.0.0) (2018-04-04)
### Bug Fixes
* do not set boolean flags if not defined in `argv` ([#119](https://github.com/yargs/yargs-parser/issues/119)) ([f6e6599](https://github.com/yargs/yargs-parser/commit/f6e6599))
### BREAKING CHANGES
* `boolean` flags defined without a `default` value will now behave like other option type and won't be set in the parsed results when the user doesn't set the corresponding CLI arg.
Previous behavior:
```js
var parse = require('yargs-parser');
parse('--flag', {boolean: ['flag']});
// => { _: [], flag: true }
parse('--no-flag', {boolean: ['flag']});
// => { _: [], flag: false }
parse('', {boolean: ['flag']});
// => { _: [], flag: false }
```
New behavior:
```js
var parse = require('yargs-parser');
parse('--flag', {boolean: ['flag']});
// => { _: [], flag: true }
parse('--no-flag', {boolean: ['flag']});
// => { _: [], flag: false }
parse('', {boolean: ['flag']});
// => { _: [] } => flag not set similarly to other option type
```
<a name="9.0.2"></a>
## [9.0.2](https://github.com/yargs/yargs-parser/compare/v9.0.1...v9.0.2) (2018-01-20)
### Bug Fixes
* nargs was still aggressively consuming too many arguments ([9b28aad](https://github.com/yargs/yargs-parser/commit/9b28aad))
<a name="9.0.1"></a>
## [9.0.1](https://github.com/yargs/yargs-parser/compare/v9.0.0...v9.0.1) (2018-01-20)
### Bug Fixes
* nargs was consuming too many arguments ([4fef206](https://github.com/yargs/yargs-parser/commit/4fef206))
<a name="9.0.0"></a>
# [9.0.0](https://github.com/yargs/yargs-parser/compare/v8.1.0...v9.0.0) (2018-01-20)
### Features
* narg arguments no longer consume flag arguments ([#114](https://github.com/yargs/yargs-parser/issues/114)) ([60bb9b3](https://github.com/yargs/yargs-parser/commit/60bb9b3))
### BREAKING CHANGES
* arguments of form --foo, -abc, will no longer be consumed by nargs
<a name="8.1.0"></a>
# [8.1.0](https://github.com/yargs/yargs-parser/compare/v8.0.0...v8.1.0) (2017-12-20)
### Bug Fixes
* allow null config values ([#108](https://github.com/yargs/yargs-parser/issues/108)) ([d8b14f9](https://github.com/yargs/yargs-parser/commit/d8b14f9))
* ensure consistent parsing of dot-notation arguments ([#102](https://github.com/yargs/yargs-parser/issues/102)) ([c9bd79c](https://github.com/yargs/yargs-parser/commit/c9bd79c))
* implement [@antoniom](https://github.com/antoniom)'s fix for camel-case expansion ([3087e1d](https://github.com/yargs/yargs-parser/commit/3087e1d))
* only run coercion functions once, despite aliases. ([#76](https://github.com/yargs/yargs-parser/issues/76)) ([#103](https://github.com/yargs/yargs-parser/issues/103)) ([507aaef](https://github.com/yargs/yargs-parser/commit/507aaef))
* scientific notation circumvented bounds check ([#110](https://github.com/yargs/yargs-parser/issues/110)) ([3571f57](https://github.com/yargs/yargs-parser/commit/3571f57))
* tokenizer should ignore spaces at the beginning of the argString ([#106](https://github.com/yargs/yargs-parser/issues/106)) ([f34ead9](https://github.com/yargs/yargs-parser/commit/f34ead9))
### Features
* make combining arrays a configurable option ([#111](https://github.com/yargs/yargs-parser/issues/111)) ([c8bf536](https://github.com/yargs/yargs-parser/commit/c8bf536))
* merge array from arguments with array from config ([#83](https://github.com/yargs/yargs-parser/issues/83)) ([806ddd6](https://github.com/yargs/yargs-parser/commit/806ddd6))
<a name="8.0.0"></a>
# [8.0.0](https://github.com/yargs/yargs-parser/compare/v7.0.0...v8.0.0) (2017-10-05)
### Bug Fixes
* Ignore multiple spaces between arguments. ([#100](https://github.com/yargs/yargs-parser/issues/100)) ([d137227](https://github.com/yargs/yargs-parser/commit/d137227))
### Features
* allow configuration of prefix for boolean negation ([#94](https://github.com/yargs/yargs-parser/issues/94)) ([00bde7d](https://github.com/yargs/yargs-parser/commit/00bde7d))
* reworking how numbers are parsed ([#104](https://github.com/yargs/yargs-parser/issues/104)) ([fba00eb](https://github.com/yargs/yargs-parser/commit/fba00eb))
### BREAKING CHANGES
* strings that fail `Number.isSafeInteger()` are no longer coerced into numbers.
<a name="7.0.0"></a>
# [7.0.0](https://github.com/yargs/yargs-parser/compare/v6.0.1...v7.0.0) (2017-05-02)
### Chores
* revert populate-- logic ([#91](https://github.com/yargs/yargs-parser/issues/91)) ([6003e6d](https://github.com/yargs/yargs-parser/commit/6003e6d))
### BREAKING CHANGES
* populate-- now defaults to false.
<a name="6.0.1"></a>
## [6.0.1](https://github.com/yargs/yargs-parser/compare/v6.0.0...v6.0.1) (2017-05-01)
### Bug Fixes
* default '--' to undefined when not provided; this is closer to the array API ([#90](https://github.com/yargs/yargs-parser/issues/90)) ([4e739cc](https://github.com/yargs/yargs-parser/commit/4e739cc))
<a name="6.0.0"></a>
# [6.0.0](https://github.com/yargs/yargs-parser/compare/v4.2.1...v6.0.0) (2017-05-01)
### Bug Fixes
* environment variables should take precedence over config file ([#81](https://github.com/yargs/yargs-parser/issues/81)) ([76cee1f](https://github.com/yargs/yargs-parser/commit/76cee1f))
* parsing hints should apply for dot notation keys ([#86](https://github.com/yargs/yargs-parser/issues/86)) ([3e47d62](https://github.com/yargs/yargs-parser/commit/3e47d62))
### Chores
* upgrade to newest version of camelcase ([#87](https://github.com/yargs/yargs-parser/issues/87)) ([f1903aa](https://github.com/yargs/yargs-parser/commit/f1903aa))
### Features
* add -- option which allows arguments after the -- flag to be returned separated from positional arguments ([#84](https://github.com/yargs/yargs-parser/issues/84)) ([2572ca8](https://github.com/yargs/yargs-parser/commit/2572ca8))
* when parsing stops, we now populate "--" by default ([#88](https://github.com/yargs/yargs-parser/issues/88)) ([cd666db](https://github.com/yargs/yargs-parser/commit/cd666db))
### BREAKING CHANGES
* rather than placing arguments in "_", when parsing is stopped via "--"; we now populate an array called "--" by default.
* camelcase now requires Node 4+.
* environment variables will now override config files (args, env, config-file, config-object)
<a name="5.0.0"></a>
# [5.0.0](https://github.com/yargs/yargs-parser/compare/v4.2.1...v5.0.0) (2017-02-18)
### Bug Fixes
* environment variables should take precedence over config file ([#81](https://github.com/yargs/yargs-parser/issues/81)) ([76cee1f](https://github.com/yargs/yargs-parser/commit/76cee1f))
### BREAKING CHANGES
* environment variables will now override config files (args, env, config-file, config-object)
<a name="4.2.1"></a>
## [4.2.1](https://github.com/yargs/yargs-parser/compare/v4.2.0...v4.2.1) (2017-01-02)
### Bug Fixes
* flatten/duplicate regression ([#75](https://github.com/yargs/yargs-parser/issues/75)) ([68d68a0](https://github.com/yargs/yargs-parser/commit/68d68a0))
<a name="4.2.0"></a>
# [4.2.0](https://github.com/yargs/yargs-parser/compare/v4.1.0...v4.2.0) (2016-12-01)
### Bug Fixes
* inner objects in configs had their keys appended to top-level key when dot-notation was disabled ([#72](https://github.com/yargs/yargs-parser/issues/72)) ([0b1b5f9](https://github.com/yargs/yargs-parser/commit/0b1b5f9))
### Features
* allow multiple arrays to be provided, rather than always combining ([#71](https://github.com/yargs/yargs-parser/issues/71)) ([0f0fb2d](https://github.com/yargs/yargs-parser/commit/0f0fb2d))
<a name="4.1.0"></a>
# [4.1.0](https://github.com/yargs/yargs-parser/compare/v4.0.2...v4.1.0) (2016-11-07)
### Features
* apply coercions to default options ([#65](https://github.com/yargs/yargs-parser/issues/65)) ([c79052b](https://github.com/yargs/yargs-parser/commit/c79052b))
* handle dot notation boolean options ([#63](https://github.com/yargs/yargs-parser/issues/63)) ([02c3545](https://github.com/yargs/yargs-parser/commit/02c3545))
<a name="4.0.2"></a>
## [4.0.2](https://github.com/yargs/yargs-parser/compare/v4.0.1...v4.0.2) (2016-09-30)
### Bug Fixes
* whoops, let's make the assign not change the Object key order ([29d069a](https://github.com/yargs/yargs-parser/commit/29d069a))
<a name="4.0.1"></a>
## [4.0.1](https://github.com/yargs/yargs-parser/compare/v4.0.0...v4.0.1) (2016-09-30)
### Bug Fixes
* lodash.assign was deprecated ([#59](https://github.com/yargs/yargs-parser/issues/59)) ([5e7eb11](https://github.com/yargs/yargs-parser/commit/5e7eb11))
<a name="4.0.0"></a>
# [4.0.0](https://github.com/yargs/yargs-parser/compare/v3.2.0...v4.0.0) (2016-09-26)
### Bug Fixes
* coerce should be applied to the final objects and arrays created ([#57](https://github.com/yargs/yargs-parser/issues/57)) ([4ca69da](https://github.com/yargs/yargs-parser/commit/4ca69da))
### BREAKING CHANGES
* coerce is no longer applied to individual arguments in an implicit array.
<a name="3.2.0"></a>
# [3.2.0](https://github.com/yargs/yargs-parser/compare/v3.1.0...v3.2.0) (2016-08-13)
### Features
* coerce full array instead of each element ([#51](https://github.com/yargs/yargs-parser/issues/51)) ([cc4dc56](https://github.com/yargs/yargs-parser/commit/cc4dc56))
<a name="3.1.0"></a>
# [3.1.0](https://github.com/yargs/yargs-parser/compare/v3.0.0...v3.1.0) (2016-08-09)
### Bug Fixes
* address pkgConf parsing bug outlined in [#37](https://github.com/yargs/yargs-parser/issues/37) ([#45](https://github.com/yargs/yargs-parser/issues/45)) ([be76ee6](https://github.com/yargs/yargs-parser/commit/be76ee6))
* better parsing of negative values ([#44](https://github.com/yargs/yargs-parser/issues/44)) ([2e43692](https://github.com/yargs/yargs-parser/commit/2e43692))
* check aliases when guessing defaults for arguments fixes [#41](https://github.com/yargs/yargs-parser/issues/41) ([#43](https://github.com/yargs/yargs-parser/issues/43)) ([f3e4616](https://github.com/yargs/yargs-parser/commit/f3e4616))
### Features
* added coerce option, for providing specialized argument parsing ([#42](https://github.com/yargs/yargs-parser/issues/42)) ([7b49cd2](https://github.com/yargs/yargs-parser/commit/7b49cd2))
<a name="3.0.0"></a>
# [3.0.0](https://github.com/yargs/yargs-parser/compare/v2.4.1...v3.0.0) (2016-08-07)
### Bug Fixes
* parsing issue with numeric character in group of options ([#19](https://github.com/yargs/yargs-parser/issues/19)) ([f743236](https://github.com/yargs/yargs-parser/commit/f743236))
* upgraded lodash.assign ([5d7fdf4](https://github.com/yargs/yargs-parser/commit/5d7fdf4))
### BREAKING CHANGES
* subtle change to how values are parsed in a group of single-character arguments.
* _first released in 3.1.0, better handling of negative values should be considered a breaking change._
<a name="2.4.1"></a>
## [2.4.1](https://github.com/yargs/yargs-parser/compare/v2.4.0...v2.4.1) (2016-07-16)
### Bug Fixes
* **count:** do not increment a default value ([#39](https://github.com/yargs/yargs-parser/issues/39)) ([b04a189](https://github.com/yargs/yargs-parser/commit/b04a189))
<a name="2.4.0"></a>
# [2.4.0](https://github.com/yargs/yargs-parser/compare/v2.3.0...v2.4.0) (2016-04-11)
### Features
* **environment:** Support nested options in environment variables ([#26](https://github.com/yargs/yargs-parser/issues/26)) thanks [@elas7](https://github.com/elas7) \o/ ([020778b](https://github.com/yargs/yargs-parser/commit/020778b))
<a name="2.3.0"></a>
# [2.3.0](https://github.com/yargs/yargs-parser/compare/v2.2.0...v2.3.0) (2016-04-09)
### Bug Fixes
* **boolean:** fix for boolean options with non boolean defaults (#20) ([2dbe86b](https://github.com/yargs/yargs-parser/commit/2dbe86b)), closes [(#20](https://github.com/(/issues/20)
* **package:** remove tests from tarball ([0353c0d](https://github.com/yargs/yargs-parser/commit/0353c0d))
* **parsing:** handle calling short option with an empty string as the next value. ([a867165](https://github.com/yargs/yargs-parser/commit/a867165))
* boolean flag when next value contains the strings 'true' or 'false'. ([69941a6](https://github.com/yargs/yargs-parser/commit/69941a6))
* update dependencies; add standard-version bin for next release (#24) ([822d9d5](https://github.com/yargs/yargs-parser/commit/822d9d5))
### Features
* **configuration:** Allow to pass configuration objects to yargs-parser ([0780900](https://github.com/yargs/yargs-parser/commit/0780900))
* **normalize:** allow normalize to work with arrays ([e0eaa1a](https://github.com/yargs/yargs-parser/commit/e0eaa1a))

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Copyright (c) 2016, Contributors
Permission to use, copy, modify, and/or distribute this software
for any purpose with or without fee is hereby granted, provided
that the above copyright notice and this permission notice
appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE
LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

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# yargs-parser
[![Build Status](https://travis-ci.org/yargs/yargs-parser.svg)](https://travis-ci.org/yargs/yargs-parser)
[![Coverage Status](https://coveralls.io/repos/yargs/yargs-parser/badge.svg?branch=)](https://coveralls.io/r/yargs/yargs-parser?branch=master)
[![NPM version](https://img.shields.io/npm/v/yargs-parser.svg)](https://www.npmjs.com/package/yargs-parser)
[![Standard Version](https://img.shields.io/badge/release-standard%20version-brightgreen.svg)](https://github.com/conventional-changelog/standard-version)
The mighty option parser used by [yargs](https://github.com/yargs/yargs).
visit the [yargs website](http://yargs.js.org/) for more examples, and thorough usage instructions.
<img width="250" src="https://raw.githubusercontent.com/yargs/yargs-parser/master/yargs-logo.png">
## Example
```sh
npm i yargs-parser --save
```
```js
var argv = require('yargs-parser')(process.argv.slice(2))
console.log(argv)
```
```sh
node example.js --foo=33 --bar hello
{ _: [], foo: 33, bar: 'hello' }
```
_or parse a string!_
```js
var argv = require('yargs-parser')('--foo=99 --bar=33')
console.log(argv)
```
```sh
{ _: [], foo: 99, bar: 33 }
```
Convert an array of mixed types before passing to `yargs-parser`:
```js
var parse = require('yargs-parser')
parse(['-f', 11, '--zoom', 55].join(' ')) // <-- array to string
parse(['-f', 11, '--zoom', 55].map(String)) // <-- array of strings
```
## API
### require('yargs-parser')(args, opts={})
Parses command line arguments returning a simple mapping of keys and values.
**expects:**
* `args`: a string or array of strings representing the options to parse.
* `opts`: provide a set of hints indicating how `args` should be parsed:
* `opts.alias`: an object representing the set of aliases for a key: `{alias: {foo: ['f']}}`.
* `opts.array`: indicate that keys should be parsed as an array: `{array: ['foo', 'bar']}`.<br>
Indicate that keys should be parsed as an array and coerced to booleans / numbers:<br>
`{array: [{ key: 'foo', boolean: true }, {key: 'bar', number: true}]}`.
* `opts.boolean`: arguments should be parsed as booleans: `{boolean: ['x', 'y']}`.
* `opts.coerce`: provide a custom synchronous function that returns a coerced value from the argument provided
(or throws an error). For arrays the function is called only once for the entire array:<br>
`{coerce: {foo: function (arg) {return modifiedArg}}}`.
* `opts.config`: indicate a key that represents a path to a configuration file (this file will be loaded and parsed).
* `opts.configObjects`: configuration objects to parse, their properties will be set as arguments:<br>
`{configObjects: [{'x': 5, 'y': 33}, {'z': 44}]}`.
* `opts.configuration`: provide configuration options to the yargs-parser (see: [configuration](#configuration)).
* `opts.count`: indicate a key that should be used as a counter, e.g., `-vvv` = `{v: 3}`.
* `opts.default`: provide default values for keys: `{default: {x: 33, y: 'hello world!'}}`.
* `opts.envPrefix`: environment variables (`process.env`) with the prefix provided should be parsed.
* `opts.narg`: specify that a key requires `n` arguments: `{narg: {x: 2}}`.
* `opts.normalize`: `path.normalize()` will be applied to values set to this key.
* `opts.number`: keys should be treated as numbers.
* `opts.string`: keys should be treated as strings (even if they resemble a number `-x 33`).
**returns:**
* `obj`: an object representing the parsed value of `args`
* `key/value`: key value pairs for each argument and their aliases.
* `_`: an array representing the positional arguments.
* [optional] `--`: an array with arguments after the end-of-options flag `--`.
### require('yargs-parser').detailed(args, opts={})
Parses a command line string, returning detailed information required by the
yargs engine.
**expects:**
* `args`: a string or array of strings representing options to parse.
* `opts`: provide a set of hints indicating how `args`, inputs are identical to `require('yargs-parser')(args, opts={})`.
**returns:**
* `argv`: an object representing the parsed value of `args`
* `key/value`: key value pairs for each argument and their aliases.
* `_`: an array representing the positional arguments.
* `error`: populated with an error object if an exception occurred during parsing.
* `aliases`: the inferred list of aliases built by combining lists in `opts.alias`.
* `newAliases`: any new aliases added via camel-case expansion.
* `configuration`: the configuration loaded from the `yargs` stanza in package.json.
<a name="configuration"></a>
### Configuration
The yargs-parser applies several automated transformations on the keys provided
in `args`. These features can be turned on and off using the `configuration` field
of `opts`.
```js
var parsed = parser(['--no-dice'], {
configuration: {
'boolean-negation': false
}
})
```
### short option groups
* default: `true`.
* key: `short-option-groups`.
Should a group of short-options be treated as boolean flags?
```sh
node example.js -abc
{ _: [], a: true, b: true, c: true }
```
_if disabled:_
```sh
node example.js -abc
{ _: [], abc: true }
```
### camel-case expansion
* default: `true`.
* key: `camel-case-expansion`.
Should hyphenated arguments be expanded into camel-case aliases?
```sh
node example.js --foo-bar
{ _: [], 'foo-bar': true, fooBar: true }
```
_if disabled:_
```sh
node example.js --foo-bar
{ _: [], 'foo-bar': true }
```
### dot-notation
* default: `true`
* key: `dot-notation`
Should keys that contain `.` be treated as objects?
```sh
node example.js --foo.bar
{ _: [], foo: { bar: true } }
```
_if disabled:_
```sh
node example.js --foo.bar
{ _: [], "foo.bar": true }
```
### parse numbers
* default: `true`
* key: `parse-numbers`
Should keys that look like numbers be treated as such?
```sh
node example.js --foo=99.3
{ _: [], foo: 99.3 }
```
_if disabled:_
```sh
node example.js --foo=99.3
{ _: [], foo: "99.3" }
```
### boolean negation
* default: `true`
* key: `boolean-negation`
Should variables prefixed with `--no` be treated as negations?
```sh
node example.js --no-foo
{ _: [], foo: false }
```
_if disabled:_
```sh
node example.js --no-foo
{ _: [], "no-foo": true }
```
### combine arrays
* default: `false`
* key: `combine-arrays`
Should arrays be combined when provided by both command line arguments and
a configuration file.
### duplicate arguments array
* default: `true`
* key: `duplicate-arguments-array`
Should arguments be coerced into an array when duplicated:
```sh
node example.js -x 1 -x 2
{ _: [], x: [1, 2] }
```
_if disabled:_
```sh
node example.js -x 1 -x 2
{ _: [], x: 2 }
```
### flatten duplicate arrays
* default: `true`
* key: `flatten-duplicate-arrays`
Should array arguments be coerced into a single array when duplicated:
```sh
node example.js -x 1 2 -x 3 4
{ _: [], x: [1, 2, 3, 4] }
```
_if disabled:_
```sh
node example.js -x 1 2 -x 3 4
{ _: [], x: [[1, 2], [3, 4]] }
```
### negation prefix
* default: `no-`
* key: `negation-prefix`
The prefix to use for negated boolean variables.
```sh
node example.js --no-foo
{ _: [], foo: false }
```
_if set to `quux`:_
```sh
node example.js --quuxfoo
{ _: [], foo: false }
```
### populate --
* default: `false`.
* key: `populate--`
Should unparsed flags be stored in `--` or `_`.
_If disabled:_
```sh
node example.js a -b -- x y
{ _: [ 'a', 'x', 'y' ], b: true }
```
_If enabled:_
```sh
node example.js a -b -- x y
{ _: [ 'a' ], '--': [ 'x', 'y' ], b: true }
```
### set placeholder key
* default: `false`.
* key: `set-placeholder-key`.
Should a placeholder be added for keys not set via the corresponding CLI argument?
_If disabled:_
```sh
node example.js -a 1 -c 2
{ _: [], a: 1, c: 2 }
```
_If enabled:_
```sh
node example.js -a 1 -c 2
{ _: [], a: 1, b: undefined, c: 2 }
```
### halt at non-option
* default: `false`.
* key: `halt-at-non-option`.
Should parsing stop at the first positional argument? This is similar to how e.g. `ssh` parses its command line.
_If disabled:_
```sh
node example.js -a run b -x y
{ _: [ 'b' ], a: 'run', x: 'y' }
```
_If enabled:_
```sh
node example.js -a run b -x y
{ _: [ 'b', '-x', 'y' ], a: 'run' }
```
### strip aliased
* default: `false`
* key: `strip-aliased`
Should aliases be removed before returning results?
_If disabled:_
```sh
node example.js --test-field 1
{ _: [], 'test-field': 1, testField: 1, 'test-alias': 1, testAlias: 1 }
```
_If enabled:_
```sh
node example.js --test-field 1
{ _: [], 'test-field': 1, testField: 1 }
```
### strip dashed
* default: `false`
* key: `strip-dashed`
Should dashed keys be removed before returning results? This option has no effect if
`camel-case-expansion` is disabled.
_If disabled:_
```sh
node example.js --test-field 1
{ _: [], 'test-field': 1, testField: 1 }
```
_If enabled:_
```sh
node example.js --test-field 1
{ _: [], testField: 1 }
```
### unknown options as args
* default: `false`
* key: `unknown-options-as-args`
Should unknown options be treated like regular arguments? An unknown option is one that is not
configured in `opts`.
_If disabled_
```sh
node example.js --unknown-option --known-option 2 --string-option --unknown-option2
{ _: [], unknownOption: true, knownOption: 2, stringOption: '', unknownOption2: true }
```
_If enabled_
```sh
node example.js --unknown-option --known-option 2 --string-option --unknown-option2
{ _: ['--unknown-option'], knownOption: 2, stringOption: '--unknown-option2' }
```
## Special Thanks
The yargs project evolves from optimist and minimist. It owes its
existence to a lot of James Halliday's hard work. Thanks [substack](https://github.com/substack) **beep** **boop** \o/
## License
ISC

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var camelCase = require('camelcase')
var decamelize = require('decamelize')
var path = require('path')
var tokenizeArgString = require('./lib/tokenize-arg-string')
var util = require('util')
function parse (args, opts) {
if (!opts) opts = {}
// allow a string argument to be passed in rather
// than an argv array.
args = tokenizeArgString(args)
// aliases might have transitive relationships, normalize this.
var aliases = combineAliases(opts.alias || {})
var configuration = Object.assign({
'short-option-groups': true,
'camel-case-expansion': true,
'dot-notation': true,
'parse-numbers': true,
'boolean-negation': true,
'negation-prefix': 'no-',
'duplicate-arguments-array': true,
'flatten-duplicate-arrays': true,
'populate--': false,
'combine-arrays': false,
'set-placeholder-key': false,
'halt-at-non-option': false,
'strip-aliased': false,
'strip-dashed': false,
'unknown-options-as-args': false
}, opts.configuration)
var defaults = opts.default || {}
var configObjects = opts.configObjects || []
var envPrefix = opts.envPrefix
var notFlagsOption = configuration['populate--']
var notFlagsArgv = notFlagsOption ? '--' : '_'
var newAliases = {}
// allow a i18n handler to be passed in, default to a fake one (util.format).
var __ = opts.__ || util.format
var error = null
var flags = {
aliases: {},
arrays: {},
bools: {},
strings: {},
numbers: {},
counts: {},
normalize: {},
configs: {},
nargs: {},
coercions: {},
keys: []
}
var negative = /^-[0-9]+(\.[0-9]+)?/
var negatedBoolean = new RegExp('^--' + configuration['negation-prefix'] + '(.+)')
;[].concat(opts.array).filter(Boolean).forEach(function (opt) {
var key = opt.key || opt
// assign to flags[bools|strings|numbers]
const assignment = Object.keys(opt).map(function (key) {
return ({
boolean: 'bools',
string: 'strings',
number: 'numbers'
})[key]
}).filter(Boolean).pop()
// assign key to be coerced
if (assignment) {
flags[assignment][key] = true
}
flags.arrays[key] = true
flags.keys.push(key)
})
;[].concat(opts.boolean).filter(Boolean).forEach(function (key) {
flags.bools[key] = true
flags.keys.push(key)
})
;[].concat(opts.string).filter(Boolean).forEach(function (key) {
flags.strings[key] = true
flags.keys.push(key)
})
;[].concat(opts.number).filter(Boolean).forEach(function (key) {
flags.numbers[key] = true
flags.keys.push(key)
})
;[].concat(opts.count).filter(Boolean).forEach(function (key) {
flags.counts[key] = true
flags.keys.push(key)
})
;[].concat(opts.normalize).filter(Boolean).forEach(function (key) {
flags.normalize[key] = true
flags.keys.push(key)
})
Object.keys(opts.narg || {}).forEach(function (k) {
flags.nargs[k] = opts.narg[k]
flags.keys.push(k)
})
Object.keys(opts.coerce || {}).forEach(function (k) {
flags.coercions[k] = opts.coerce[k]
flags.keys.push(k)
})
if (Array.isArray(opts.config) || typeof opts.config === 'string') {
;[].concat(opts.config).filter(Boolean).forEach(function (key) {
flags.configs[key] = true
})
} else {
Object.keys(opts.config || {}).forEach(function (k) {
flags.configs[k] = opts.config[k]
})
}
// create a lookup table that takes into account all
// combinations of aliases: {f: ['foo'], foo: ['f']}
extendAliases(opts.key, aliases, opts.default, flags.arrays)
// apply default values to all aliases.
Object.keys(defaults).forEach(function (key) {
(flags.aliases[key] || []).forEach(function (alias) {
defaults[alias] = defaults[key]
})
})
var argv = { _: [] }
var notFlags = []
for (var i = 0; i < args.length; i++) {
var arg = args[i]
var broken
var key
var letters
var m
var next
var value
if (isUnknownOptionAsArg(arg)) {
argv._.push(arg)
// -- separated by =
} else if (arg.match(/^--.+=/) || (
!configuration['short-option-groups'] && arg.match(/^-.+=/)
)) {
// Using [\s\S] instead of . because js doesn't support the
// 'dotall' regex modifier. See:
// http://stackoverflow.com/a/1068308/13216
m = arg.match(/^--?([^=]+)=([\s\S]*)$/)
// nargs format = '--f=monkey washing cat'
if (checkAllAliases(m[1], flags.nargs)) {
args.splice(i + 1, 0, m[2])
i = eatNargs(i, m[1], args)
// arrays format = '--f=a b c'
} else if (checkAllAliases(m[1], flags.arrays)) {
args.splice(i + 1, 0, m[2])
i = eatArray(i, m[1], args)
} else {
setArg(m[1], m[2])
}
} else if (arg.match(negatedBoolean) && configuration['boolean-negation']) {
key = arg.match(negatedBoolean)[1]
setArg(key, checkAllAliases(key, flags.arrays) ? [false] : false)
// -- separated by space.
} else if (arg.match(/^--.+/) || (
!configuration['short-option-groups'] && arg.match(/^-[^-]+/)
)) {
key = arg.match(/^--?(.+)/)[1]
// nargs format = '--foo a b c'
// should be truthy even if: flags.nargs[key] === 0
if (checkAllAliases(key, flags.nargs) !== false) {
i = eatNargs(i, key, args)
// array format = '--foo a b c'
} else if (checkAllAliases(key, flags.arrays)) {
i = eatArray(i, key, args)
} else {
next = args[i + 1]
if (next !== undefined && (!next.match(/^-/) ||
next.match(negative)) &&
!checkAllAliases(key, flags.bools) &&
!checkAllAliases(key, flags.counts)) {
setArg(key, next)
i++
} else if (/^(true|false)$/.test(next)) {
setArg(key, next)
i++
} else {
setArg(key, defaultValue(key))
}
}
// dot-notation flag separated by '='.
} else if (arg.match(/^-.\..+=/)) {
m = arg.match(/^-([^=]+)=([\s\S]*)$/)
setArg(m[1], m[2])
// dot-notation flag separated by space.
} else if (arg.match(/^-.\..+/)) {
next = args[i + 1]
key = arg.match(/^-(.\..+)/)[1]
if (next !== undefined && !next.match(/^-/) &&
!checkAllAliases(key, flags.bools) &&
!checkAllAliases(key, flags.counts)) {
setArg(key, next)
i++
} else {
setArg(key, defaultValue(key))
}
} else if (arg.match(/^-[^-]+/) && !arg.match(negative)) {
letters = arg.slice(1, -1).split('')
broken = false
for (var j = 0; j < letters.length; j++) {
next = arg.slice(j + 2)
if (letters[j + 1] && letters[j + 1] === '=') {
value = arg.slice(j + 3)
key = letters[j]
// nargs format = '-f=monkey washing cat'
if (checkAllAliases(key, flags.nargs)) {
args.splice(i + 1, 0, value)
i = eatNargs(i, key, args)
// array format = '-f=a b c'
} else if (checkAllAliases(key, flags.arrays)) {
args.splice(i + 1, 0, value)
i = eatArray(i, key, args)
} else {
setArg(key, value)
}
broken = true
break
}
if (next === '-') {
setArg(letters[j], next)
continue
}
// current letter is an alphabetic character and next value is a number
if (/[A-Za-z]/.test(letters[j]) &&
/^-?\d+(\.\d*)?(e-?\d+)?$/.test(next)) {
setArg(letters[j], next)
broken = true
break
}
if (letters[j + 1] && letters[j + 1].match(/\W/)) {
setArg(letters[j], next)
broken = true
break
} else {
setArg(letters[j], defaultValue(letters[j]))
}
}
key = arg.slice(-1)[0]
if (!broken && key !== '-') {
// nargs format = '-f a b c'
// should be truthy even if: flags.nargs[key] === 0
if (checkAllAliases(key, flags.nargs) !== false) {
i = eatNargs(i, key, args)
// array format = '-f a b c'
} else if (checkAllAliases(key, flags.arrays)) {
i = eatArray(i, key, args)
} else {
next = args[i + 1]
if (next !== undefined && (!/^(-|--)[^-]/.test(next) ||
next.match(negative)) &&
!checkAllAliases(key, flags.bools) &&
!checkAllAliases(key, flags.counts)) {
setArg(key, next)
i++
} else if (/^(true|false)$/.test(next)) {
setArg(key, next)
i++
} else {
setArg(key, defaultValue(key))
}
}
}
} else if (arg === '--') {
notFlags = args.slice(i + 1)
break
} else if (configuration['halt-at-non-option']) {
notFlags = args.slice(i)
break
} else {
argv._.push(maybeCoerceNumber('_', arg))
}
}
// order of precedence:
// 1. command line arg
// 2. value from env var
// 3. value from config file
// 4. value from config objects
// 5. configured default value
applyEnvVars(argv, true) // special case: check env vars that point to config file
applyEnvVars(argv, false)
setConfig(argv)
setConfigObjects()
applyDefaultsAndAliases(argv, flags.aliases, defaults)
applyCoercions(argv)
if (configuration['set-placeholder-key']) setPlaceholderKeys(argv)
// for any counts either not in args or without an explicit default, set to 0
Object.keys(flags.counts).forEach(function (key) {
if (!hasKey(argv, key.split('.'))) setArg(key, 0)
})
// '--' defaults to undefined.
if (notFlagsOption && notFlags.length) argv[notFlagsArgv] = []
notFlags.forEach(function (key) {
argv[notFlagsArgv].push(key)
})
if (configuration['camel-case-expansion'] && configuration['strip-dashed']) {
Object.keys(argv).filter(key => key !== '--' && key.includes('-')).forEach(key => {
delete argv[key]
})
}
if (configuration['strip-aliased']) {
// XXX Switch to [].concat(...Object.values(aliases)) once node.js 6 is dropped
;[].concat(...Object.keys(aliases).map(k => aliases[k])).forEach(alias => {
if (configuration['camel-case-expansion']) {
delete argv[alias.split('.').map(prop => camelCase(prop)).join('.')]
}
delete argv[alias]
})
}
// how many arguments should we consume, based
// on the nargs option?
function eatNargs (i, key, args) {
var ii
const toEat = checkAllAliases(key, flags.nargs)
if (toEat === 0) {
setArg(key, defaultValue(key))
return i
}
// nargs will not consume flag arguments, e.g., -abc, --foo,
// and terminates when one is observed.
var available = 0
for (ii = i + 1; ii < args.length; ii++) {
if (!args[ii].match(/^-[^0-9]/) || isUnknownOptionAsArg(args[ii])) available++
else break
}
if (available < toEat) error = Error(__('Not enough arguments following: %s', key))
const consumed = Math.min(available, toEat)
for (ii = i + 1; ii < (consumed + i + 1); ii++) {
setArg(key, args[ii])
}
return (i + consumed)
}
// if an option is an array, eat all non-hyphenated arguments
// following it... YUM!
// e.g., --foo apple banana cat becomes ["apple", "banana", "cat"]
function eatArray (i, key, args) {
let argsToSet = []
let next = args[i + 1]
if (checkAllAliases(key, flags.bools) && !(/^(true|false)$/.test(next))) {
argsToSet.push(true)
} else if (isUndefined(next) || (/^-/.test(next) && !negative.test(next) && !isUnknownOptionAsArg(next))) {
// for keys without value ==> argsToSet remains an empty []
// set user default value, if available
if (defaults.hasOwnProperty(key)) {
argsToSet.push(defaults[key])
}
} else {
for (var ii = i + 1; ii < args.length; ii++) {
next = args[ii]
if (/^-/.test(next) && !negative.test(next) && !isUnknownOptionAsArg(next)) break
i = ii
argsToSet.push(processValue(key, next))
}
}
setArg(key, argsToSet)
return i
}
function setArg (key, val) {
if (/-/.test(key) && configuration['camel-case-expansion']) {
var alias = key.split('.').map(function (prop) {
return camelCase(prop)
}).join('.')
addNewAlias(key, alias)
}
var value = processValue(key, val)
var splitKey = key.split('.')
setKey(argv, splitKey, value)
// handle populating aliases of the full key
if (flags.aliases[key] && flags.aliases[key].forEach) {
flags.aliases[key].forEach(function (x) {
x = x.split('.')
setKey(argv, x, value)
})
}
// handle populating aliases of the first element of the dot-notation key
if (splitKey.length > 1 && configuration['dot-notation']) {
;(flags.aliases[splitKey[0]] || []).forEach(function (x) {
x = x.split('.')
// expand alias with nested objects in key
var a = [].concat(splitKey)
a.shift() // nuke the old key.
x = x.concat(a)
setKey(argv, x, value)
})
}
// Set normalize getter and setter when key is in 'normalize' but isn't an array
if (checkAllAliases(key, flags.normalize) && !checkAllAliases(key, flags.arrays)) {
var keys = [key].concat(flags.aliases[key] || [])
keys.forEach(function (key) {
argv.__defineSetter__(key, function (v) {
val = path.normalize(v)
})
argv.__defineGetter__(key, function () {
return typeof val === 'string' ? path.normalize(val) : val
})
})
}
}
function addNewAlias (key, alias) {
if (!(flags.aliases[key] && flags.aliases[key].length)) {
flags.aliases[key] = [alias]
newAliases[alias] = true
}
if (!(flags.aliases[alias] && flags.aliases[alias].length)) {
addNewAlias(alias, key)
}
}
function processValue (key, val) {
// strings may be quoted, clean this up as we assign values.
if (typeof val === 'string' &&
(val[0] === "'" || val[0] === '"') &&
val[val.length - 1] === val[0]
) {
val = val.substring(1, val.length - 1)
}
// handle parsing boolean arguments --foo=true --bar false.
if (checkAllAliases(key, flags.bools) || checkAllAliases(key, flags.counts)) {
if (typeof val === 'string') val = val === 'true'
}
var value = Array.isArray(val)
? val.map(function (v) { return maybeCoerceNumber(key, v) })
: maybeCoerceNumber(key, val)
// increment a count given as arg (either no value or value parsed as boolean)
if (checkAllAliases(key, flags.counts) && (isUndefined(value) || typeof value === 'boolean')) {
value = increment
}
// Set normalized value when key is in 'normalize' and in 'arrays'
if (checkAllAliases(key, flags.normalize) && checkAllAliases(key, flags.arrays)) {
if (Array.isArray(val)) value = val.map(path.normalize)
else value = path.normalize(val)
}
return value
}
function maybeCoerceNumber (key, value) {
if (!checkAllAliases(key, flags.strings) && !checkAllAliases(key, flags.bools) && !Array.isArray(value)) {
const shouldCoerceNumber = isNumber(value) && configuration['parse-numbers'] && (
Number.isSafeInteger(Math.floor(value))
)
if (shouldCoerceNumber || (!isUndefined(value) && checkAllAliases(key, flags.numbers))) value = Number(value)
}
return value
}
// set args from config.json file, this should be
// applied last so that defaults can be applied.
function setConfig (argv) {
var configLookup = {}
// expand defaults/aliases, in-case any happen to reference
// the config.json file.
applyDefaultsAndAliases(configLookup, flags.aliases, defaults)
Object.keys(flags.configs).forEach(function (configKey) {
var configPath = argv[configKey] || configLookup[configKey]
if (configPath) {
try {
var config = null
var resolvedConfigPath = path.resolve(process.cwd(), configPath)
if (typeof flags.configs[configKey] === 'function') {
try {
config = flags.configs[configKey](resolvedConfigPath)
} catch (e) {
config = e
}
if (config instanceof Error) {
error = config
return
}
} else {
config = require(resolvedConfigPath)
}
setConfigObject(config)
} catch (ex) {
if (argv[configKey]) error = Error(__('Invalid JSON config file: %s', configPath))
}
}
})
}
// set args from config object.
// it recursively checks nested objects.
function setConfigObject (config, prev) {
Object.keys(config).forEach(function (key) {
var value = config[key]
var fullKey = prev ? prev + '.' + key : key
// if the value is an inner object and we have dot-notation
// enabled, treat inner objects in config the same as
// heavily nested dot notations (foo.bar.apple).
if (typeof value === 'object' && value !== null && !Array.isArray(value) && configuration['dot-notation']) {
// if the value is an object but not an array, check nested object
setConfigObject(value, fullKey)
} else {
// setting arguments via CLI takes precedence over
// values within the config file.
if (!hasKey(argv, fullKey.split('.')) || (checkAllAliases(fullKey, flags.arrays) && configuration['combine-arrays'])) {
setArg(fullKey, value)
}
}
})
}
// set all config objects passed in opts
function setConfigObjects () {
if (typeof configObjects === 'undefined') return
configObjects.forEach(function (configObject) {
setConfigObject(configObject)
})
}
function applyEnvVars (argv, configOnly) {
if (typeof envPrefix === 'undefined') return
var prefix = typeof envPrefix === 'string' ? envPrefix : ''
Object.keys(process.env).forEach(function (envVar) {
if (prefix === '' || envVar.lastIndexOf(prefix, 0) === 0) {
// get array of nested keys and convert them to camel case
var keys = envVar.split('__').map(function (key, i) {
if (i === 0) {
key = key.substring(prefix.length)
}
return camelCase(key)
})
if (((configOnly && flags.configs[keys.join('.')]) || !configOnly) && !hasKey(argv, keys)) {
setArg(keys.join('.'), process.env[envVar])
}
}
})
}
function applyCoercions (argv) {
var coerce
var applied = {}
Object.keys(argv).forEach(function (key) {
if (!applied.hasOwnProperty(key)) { // If we haven't already coerced this option via one of its aliases
coerce = checkAllAliases(key, flags.coercions)
if (typeof coerce === 'function') {
try {
var value = maybeCoerceNumber(key, coerce(argv[key]))
;([].concat(flags.aliases[key] || [], key)).forEach(ali => {
applied[ali] = argv[ali] = value
})
} catch (err) {
error = err
}
}
}
})
}
function setPlaceholderKeys (argv) {
flags.keys.forEach((key) => {
// don't set placeholder keys for dot notation options 'foo.bar'.
if (~key.indexOf('.')) return
if (typeof argv[key] === 'undefined') argv[key] = undefined
})
return argv
}
function applyDefaultsAndAliases (obj, aliases, defaults) {
Object.keys(defaults).forEach(function (key) {
if (!hasKey(obj, key.split('.'))) {
setKey(obj, key.split('.'), defaults[key])
;(aliases[key] || []).forEach(function (x) {
if (hasKey(obj, x.split('.'))) return
setKey(obj, x.split('.'), defaults[key])
})
}
})
}
function hasKey (obj, keys) {
var o = obj
if (!configuration['dot-notation']) keys = [keys.join('.')]
keys.slice(0, -1).forEach(function (key) {
o = (o[key] || {})
})
var key = keys[keys.length - 1]
if (typeof o !== 'object') return false
else return key in o
}
function setKey (obj, keys, value) {
var o = obj
if (!configuration['dot-notation']) keys = [keys.join('.')]
keys.slice(0, -1).forEach(function (key, index) {
// TODO(bcoe): in the next major version of yargs, switch to
// Object.create(null) for dot notation:
key = sanitizeKey(key)
if (typeof o === 'object' && o[key] === undefined) {
o[key] = {}
}
if (typeof o[key] !== 'object' || Array.isArray(o[key])) {
// ensure that o[key] is an array, and that the last item is an empty object.
if (Array.isArray(o[key])) {
o[key].push({})
} else {
o[key] = [o[key], {}]
}
// we want to update the empty object at the end of the o[key] array, so set o to that object
o = o[key][o[key].length - 1]
} else {
o = o[key]
}
})
// TODO(bcoe): in the next major version of yargs, switch to
// Object.create(null) for dot notation:
const key = sanitizeKey(keys[keys.length - 1])
const isTypeArray = checkAllAliases(keys.join('.'), flags.arrays)
const isValueArray = Array.isArray(value)
let duplicate = configuration['duplicate-arguments-array']
// nargs has higher priority than duplicate
if (!duplicate && checkAllAliases(key, flags.nargs)) {
duplicate = true
if ((!isUndefined(o[key]) && flags.nargs[key] === 1) || (Array.isArray(o[key]) && o[key].length === flags.nargs[key])) {
o[key] = undefined
}
}
if (value === increment) {
o[key] = increment(o[key])
} else if (Array.isArray(o[key])) {
if (duplicate && isTypeArray && isValueArray) {
o[key] = configuration['flatten-duplicate-arrays'] ? o[key].concat(value) : (Array.isArray(o[key][0]) ? o[key] : [o[key]]).concat([value])
} else if (!duplicate && Boolean(isTypeArray) === Boolean(isValueArray)) {
o[key] = value
} else {
o[key] = o[key].concat([value])
}
} else if (o[key] === undefined && isTypeArray) {
o[key] = isValueArray ? value : [value]
} else if (duplicate && !(o[key] === undefined || checkAllAliases(key, flags.counts))) {
o[key] = [ o[key], value ]
} else {
o[key] = value
}
}
// extend the aliases list with inferred aliases.
function extendAliases (...args) {
args.forEach(function (obj) {
Object.keys(obj || {}).forEach(function (key) {
// short-circuit if we've already added a key
// to the aliases array, for example it might
// exist in both 'opts.default' and 'opts.key'.
if (flags.aliases[key]) return
flags.aliases[key] = [].concat(aliases[key] || [])
// For "--option-name", also set argv.optionName
flags.aliases[key].concat(key).forEach(function (x) {
if (/-/.test(x) && configuration['camel-case-expansion']) {
var c = camelCase(x)
if (c !== key && flags.aliases[key].indexOf(c) === -1) {
flags.aliases[key].push(c)
newAliases[c] = true
}
}
})
// For "--optionName", also set argv['option-name']
flags.aliases[key].concat(key).forEach(function (x) {
if (x.length > 1 && /[A-Z]/.test(x) && configuration['camel-case-expansion']) {
var c = decamelize(x, '-')
if (c !== key && flags.aliases[key].indexOf(c) === -1) {
flags.aliases[key].push(c)
newAliases[c] = true
}
}
})
flags.aliases[key].forEach(function (x) {
flags.aliases[x] = [key].concat(flags.aliases[key].filter(function (y) {
return x !== y
}))
})
})
})
}
// check if a flag is set for any of a key's aliases.
function checkAllAliases (key, flag) {
var isSet = false
var toCheck = [].concat(flags.aliases[key] || [], key)
toCheck.forEach(function (key) {
if (flag.hasOwnProperty(key)) isSet = flag[key]
})
return isSet
}
function hasAnyFlag (key) {
// XXX Switch to [].concat(...Object.values(flags)) once node.js 6 is dropped
var toCheck = [].concat(...Object.keys(flags).map(k => flags[k]))
return toCheck.some(function (flag) {
return flag[key]
})
}
function hasFlagsMatching (arg, ...patterns) {
var toCheck = [].concat(...patterns)
return toCheck.some(function (pattern) {
var match = arg.match(pattern)
return match && hasAnyFlag(match[1])
})
}
// based on a simplified version of the short flag group parsing logic
function hasAllShortFlags (arg) {
// if this is a negative number, or doesn't start with a single hyphen, it's not a short flag group
if (arg.match(negative) || !arg.match(/^-[^-]+/)) { return false }
var hasAllFlags = true
var letters = arg.slice(1).split('')
var next
for (var j = 0; j < letters.length; j++) {
next = arg.slice(j + 2)
if (!hasAnyFlag(letters[j])) {
hasAllFlags = false
break
}
if ((letters[j + 1] && letters[j + 1] === '=') ||
next === '-' ||
(/[A-Za-z]/.test(letters[j]) && /^-?\d+(\.\d*)?(e-?\d+)?$/.test(next)) ||
(letters[j + 1] && letters[j + 1].match(/\W/))) {
break
}
}
return hasAllFlags
}
function isUnknownOptionAsArg (arg) {
return configuration['unknown-options-as-args'] && isUnknownOption(arg)
}
function isUnknownOption (arg) {
// ignore negative numbers
if (arg.match(negative)) { return false }
// if this is a short option group and all of them are configured, it isn't unknown
if (hasAllShortFlags(arg)) { return false }
// e.g. '--count=2'
const flagWithEquals = /^-+([^=]+?)=[\s\S]*$/
// e.g. '-a' or '--arg'
const normalFlag = /^-+([^=]+?)$/
// e.g. '-a-'
const flagEndingInHyphen = /^-+([^=]+?)-$/
// e.g. '-abc123'
const flagEndingInDigits = /^-+([^=]+?)\d+$/
// e.g. '-a/usr/local'
const flagEndingInNonWordCharacters = /^-+([^=]+?)\W+.*$/
// check the different types of flag styles, including negatedBoolean, a pattern defined near the start of the parse method
return !hasFlagsMatching(arg, flagWithEquals, negatedBoolean, normalFlag, flagEndingInHyphen, flagEndingInDigits, flagEndingInNonWordCharacters)
}
// make a best effor to pick a default value
// for an option based on name and type.
function defaultValue (key) {
if (!checkAllAliases(key, flags.bools) &&
!checkAllAliases(key, flags.counts) &&
`${key}` in defaults) {
return defaults[key]
} else {
return defaultForType(guessType(key))
}
}
// return a default value, given the type of a flag.,
// e.g., key of type 'string' will default to '', rather than 'true'.
function defaultForType (type) {
var def = {
boolean: true,
string: '',
number: undefined,
array: []
}
return def[type]
}
// given a flag, enforce a default type.
function guessType (key) {
var type = 'boolean'
if (checkAllAliases(key, flags.strings)) type = 'string'
else if (checkAllAliases(key, flags.numbers)) type = 'number'
else if (checkAllAliases(key, flags.bools)) type = 'boolean'
else if (checkAllAliases(key, flags.arrays)) type = 'array'
return type
}
function isNumber (x) {
if (x === null || x === undefined) return false
// if loaded from config, may already be a number.
if (typeof x === 'number') return true
// hexadecimal.
if (/^0x[0-9a-f]+$/i.test(x)) return true
// don't treat 0123 as a number; as it drops the leading '0'.
if (x.length > 1 && x[0] === '0') return false
return /^[-]?(?:\d+(?:\.\d*)?|\.\d+)(e[-+]?\d+)?$/.test(x)
}
function isUndefined (num) {
return num === undefined
}
return {
argv: argv,
error: error,
aliases: flags.aliases,
newAliases: newAliases,
configuration: configuration
}
}
// if any aliases reference each other, we should
// merge them together.
function combineAliases (aliases) {
var aliasArrays = []
var change = true
var combined = {}
// turn alias lookup hash {key: ['alias1', 'alias2']} into
// a simple array ['key', 'alias1', 'alias2']
Object.keys(aliases).forEach(function (key) {
aliasArrays.push(
[].concat(aliases[key], key)
)
})
// combine arrays until zero changes are
// made in an iteration.
while (change) {
change = false
for (var i = 0; i < aliasArrays.length; i++) {
for (var ii = i + 1; ii < aliasArrays.length; ii++) {
var intersect = aliasArrays[i].filter(function (v) {
return aliasArrays[ii].indexOf(v) !== -1
})
if (intersect.length) {
aliasArrays[i] = aliasArrays[i].concat(aliasArrays[ii])
aliasArrays.splice(ii, 1)
change = true
break
}
}
}
}
// map arrays back to the hash-lookup (de-dupe while
// we're at it).
aliasArrays.forEach(function (aliasArray) {
aliasArray = aliasArray.filter(function (v, i, self) {
return self.indexOf(v) === i
})
combined[aliasArray.pop()] = aliasArray
})
return combined
}
// this function should only be called when a count is given as an arg
// it is NOT called to set a default value
// thus we can start the count at 1 instead of 0
function increment (orig) {
return orig !== undefined ? orig + 1 : 1
}
function Parser (args, opts) {
var result = parse(args.slice(), opts)
return result.argv
}
// parse arguments and return detailed
// meta information, aliases, etc.
Parser.detailed = function (args, opts) {
return parse(args.slice(), opts)
}
// TODO(bcoe): in the next major version of yargs, switch to
// Object.create(null) for dot notation:
function sanitizeKey (key) {
if (key === '__proto__') return '___proto___'
return key
}
module.exports = Parser

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// take an un-split argv string and tokenize it.
module.exports = function (argString) {
if (Array.isArray(argString)) {
return argString.map(e => typeof e !== 'string' ? e + '' : e)
}
argString = argString.trim()
var i = 0
var prevC = null
var c = null
var opening = null
var args = []
for (var ii = 0; ii < argString.length; ii++) {
prevC = c
c = argString.charAt(ii)
// split on spaces unless we're in quotes.
if (c === ' ' && !opening) {
if (!(prevC === ' ')) {
i++
}
continue
}
// don't split the string if we're in matching
// opening or closing single and double quotes.
if (c === opening) {
opening = null
} else if ((c === "'" || c === '"') && !opening) {
opening = c
}
if (!args[i]) args[i] = ''
args[i] += c
}
return args
}

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{
"name": "yargs-parser",
"version": "15.0.1",
"description": "the mighty option parser used by yargs",
"main": "index.js",
"scripts": {
"test": "nyc mocha test/*.js",
"posttest": "standard",
"coverage": "nyc report --reporter=text-lcov | coveralls",
"release": "standard-version"
},
"repository": {
"url": "git@github.com:yargs/yargs-parser.git"
},
"keywords": [
"argument",
"parser",
"yargs",
"command",
"cli",
"parsing",
"option",
"args",
"argument"
],
"author": "Ben Coe <ben@npmjs.com>",
"license": "ISC",
"devDependencies": {
"chai": "^4.2.0",
"coveralls": "^3.0.2",
"mocha": "^5.2.0",
"nyc": "^14.1.0",
"standard": "^12.0.1",
"standard-version": "^6.0.0"
},
"dependencies": {
"camelcase": "^5.0.0",
"decamelize": "^1.2.0"
},
"files": [
"lib",
"index.js"
],
"engine": {
"node": ">=6"
}
}

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Copyright 2010 James Halliday (mail@substack.net)
Modified work Copyright 2014 Contributors (ben@npmjs.com)
This project is free software released under the MIT/X11 license:
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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<p align="center">
<img width="250" src="/yargs-logo.png">
</p>
<h1 align="center"> Yargs </h1>
<p align="center">
<b >Yargs be a node.js library fer hearties tryin' ter parse optstrings</b>
</p>
<br>
[![Build Status][travis-image]][travis-url]
[![Coverage Status][coveralls-image]][coveralls-url]
[![NPM version][npm-image]][npm-url]
[![js-standard-style][standard-image]][standard-url]
[![Conventional Commits][conventional-commits-image]][conventional-commits-url]
[![Slack][slack-image]][slack-url]
## Description :
Yargs helps you build interactive command line tools, by parsing arguments and generating an elegant user interface.
It gives you:
* commands and (grouped) options (`my-program.js serve --port=5000`).
* a dynamically generated help menu based on your arguments.
> <img width="400" src="/screen.png">
* bash-completion shortcuts for commands and options.
* and [tons more](/docs/api.md).
## Installation
Stable version:
```bash
npm i yargs
```
Bleeding edge version with the most recent features:
```bash
npm i yargs@next
```
## Usage :
### Simple Example
````javascript
#!/usr/bin/env node
const argv = require('yargs').argv
if (argv.ships > 3 && argv.distance < 53.5) {
console.log('Plunder more riffiwobbles!')
} else {
console.log('Retreat from the xupptumblers!')
}
````
```bash
$ ./plunder.js --ships=4 --distance=22
Plunder more riffiwobbles!
$ ./plunder.js --ships 12 --distance 98.7
Retreat from the xupptumblers!
```
### Complex Example
```javascript
#!/usr/bin/env node
require('yargs') // eslint-disable-line
.command('serve [port]', 'start the server', (yargs) => {
yargs
.positional('port', {
describe: 'port to bind on',
default: 5000
})
}, (argv) => {
if (argv.verbose) console.info(`start server on :${argv.port}`)
serve(argv.port)
})
.option('verbose', {
alias: 'v',
type: 'boolean',
description: 'Run with verbose logging'
})
.argv
```
Run the example above with `--help` to see the help for the application.
## TypeScript
yargs has type definitions at [@types/yargs][type-definitions].
```
npm i @types/yargs --save-dev
```
See usage examples in [docs](/docs/typescript.md).
## Community :
Having problems? want to contribute? join our [community slack](http://devtoolscommunity.herokuapp.com).
## Documentation :
### Table of Contents
* [Yargs' API](/docs/api.md)
* [Examples](/docs/examples.md)
* [Parsing Tricks](/docs/tricks.md)
* [Stop the Parser](/docs/tricks.md#stop)
* [Negating Boolean Arguments](/docs/tricks.md#negate)
* [Numbers](/docs/tricks.md#numbers)
* [Arrays](/docs/tricks.md#arrays)
* [Objects](/docs/tricks.md#objects)
* [Quotes](/docs/tricks.md#quotes)
* [Advanced Topics](/docs/advanced.md)
* [Composing Your App Using Commands](/docs/advanced.md#commands)
* [Building Configurable CLI Apps](/docs/advanced.md#configuration)
* [Customizing Yargs' Parser](/docs/advanced.md#customizing)
* [Contributing](/contributing.md)
[travis-url]: https://travis-ci.org/yargs/yargs
[travis-image]: https://img.shields.io/travis/yargs/yargs/master.svg
[coveralls-url]: https://coveralls.io/github/yargs/yargs
[coveralls-image]: https://img.shields.io/coveralls/yargs/yargs.svg
[npm-url]: https://www.npmjs.com/package/yargs
[npm-image]: https://img.shields.io/npm/v/yargs.svg
[standard-image]: https://img.shields.io/badge/code%20style-standard-brightgreen.svg
[standard-url]: http://standardjs.com/
[conventional-commits-image]: https://img.shields.io/badge/Conventional%20Commits-1.0.0-yellow.svg
[conventional-commits-url]: https://conventionalcommits.org/
[slack-image]: http://devtoolscommunity.herokuapp.com/badge.svg
[slack-url]: http://devtoolscommunity.herokuapp.com
[type-definitions]: https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/yargs

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'use strict'
// classic singleton yargs API, to use yargs
// without running as a singleton do:
// require('yargs/yargs')(process.argv.slice(2))
const yargs = require('./yargs')
Argv(process.argv.slice(2))
module.exports = Argv
function Argv (processArgs, cwd) {
const argv = yargs(processArgs, cwd, require)
singletonify(argv)
return argv
}
/* Hack an instance of Argv with process.argv into Argv
so people can do
require('yargs')(['--beeble=1','-z','zizzle']).argv
to parse a list of args and
require('yargs').argv
to get a parsed version of process.argv.
*/
function singletonify (inst) {
Object.keys(inst).forEach((key) => {
if (key === 'argv') {
Argv.__defineGetter__(key, inst.__lookupGetter__(key))
} else if (typeof inst[key] === 'function') {
Argv[key] = inst[key].bind(inst)
} else {
Argv.__defineGetter__('$0', () => {
return inst.$0
})
Argv.__defineGetter__('parsed', () => {
return inst.parsed
})
}
})
}

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'use strict'
const fs = require('fs')
const path = require('path')
const YError = require('./yerror')
let previouslyVisitedConfigs = []
function checkForCircularExtends (cfgPath) {
if (previouslyVisitedConfigs.indexOf(cfgPath) > -1) {
throw new YError(`Circular extended configurations: '${cfgPath}'.`)
}
}
function getPathToDefaultConfig (cwd, pathToExtend) {
return path.resolve(cwd, pathToExtend)
}
function mergeDeep (config1, config2) {
const target = {}
const isObject = obj => obj && typeof obj === 'object' && !Array.isArray(obj)
Object.assign(target, config1)
for (let key of Object.keys(config2)) {
if (isObject(config2[key]) && isObject(target[key])) {
target[key] = mergeDeep(config1[key], config2[key])
} else {
target[key] = config2[key]
}
}
return target
}
function applyExtends (config, cwd, mergeExtends) {
let defaultConfig = {}
if (Object.prototype.hasOwnProperty.call(config, 'extends')) {
if (typeof config.extends !== 'string') return defaultConfig
const isPath = /\.json|\..*rc$/.test(config.extends)
let pathToDefault = null
if (!isPath) {
try {
pathToDefault = require.resolve(config.extends)
} catch (err) {
// most likely this simply isn't a module.
}
} else {
pathToDefault = getPathToDefaultConfig(cwd, config.extends)
}
// maybe the module uses key for some other reason,
// err on side of caution.
if (!pathToDefault && !isPath) return config
checkForCircularExtends(pathToDefault)
previouslyVisitedConfigs.push(pathToDefault)
defaultConfig = isPath ? JSON.parse(fs.readFileSync(pathToDefault, 'utf8')) : require(config.extends)
delete config.extends
defaultConfig = applyExtends(defaultConfig, path.dirname(pathToDefault), mergeExtends)
}
previouslyVisitedConfigs = []
return mergeExtends ? mergeDeep(defaultConfig, config) : Object.assign({}, defaultConfig, config)
}
module.exports = applyExtends

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'use strict'
// hoisted due to circular dependency on command.
module.exports = argsert
const command = require('./command')()
const YError = require('./yerror')
const positionName = ['first', 'second', 'third', 'fourth', 'fifth', 'sixth']
function argsert (expected, callerArguments, length) {
// TODO: should this eventually raise an exception.
try {
// preface the argument description with "cmd", so
// that we can run it through yargs' command parser.
let position = 0
let parsed = { demanded: [], optional: [] }
if (typeof expected === 'object') {
length = callerArguments
callerArguments = expected
} else {
parsed = command.parseCommand(`cmd ${expected}`)
}
const args = [].slice.call(callerArguments)
while (args.length && args[args.length - 1] === undefined) args.pop()
length = length || args.length
if (length < parsed.demanded.length) {
throw new YError(`Not enough arguments provided. Expected ${parsed.demanded.length} but received ${args.length}.`)
}
const totalCommands = parsed.demanded.length + parsed.optional.length
if (length > totalCommands) {
throw new YError(`Too many arguments provided. Expected max ${totalCommands} but received ${length}.`)
}
parsed.demanded.forEach((demanded) => {
const arg = args.shift()
const observedType = guessType(arg)
const matchingTypes = demanded.cmd.filter(type => type === observedType || type === '*')
if (matchingTypes.length === 0) argumentTypeError(observedType, demanded.cmd, position, false)
position += 1
})
parsed.optional.forEach((optional) => {
if (args.length === 0) return
const arg = args.shift()
const observedType = guessType(arg)
const matchingTypes = optional.cmd.filter(type => type === observedType || type === '*')
if (matchingTypes.length === 0) argumentTypeError(observedType, optional.cmd, position, true)
position += 1
})
} catch (err) {
console.warn(err.stack)
}
}
function guessType (arg) {
if (Array.isArray(arg)) {
return 'array'
} else if (arg === null) {
return 'null'
}
return typeof arg
}
function argumentTypeError (observedType, allowedTypes, position, optional) {
throw new YError(`Invalid ${positionName[position] || 'manyith'} argument. Expected ${allowedTypes.join(' or ')} but received ${observedType}.`)
}

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'use strict'
const inspect = require('util').inspect
const isPromise = require('./is-promise')
const { applyMiddleware, commandMiddlewareFactory } = require('./middleware')
const path = require('path')
const Parser = require('yargs-parser')
const DEFAULT_MARKER = /(^\*)|(^\$0)/
// handles parsing positional arguments,
// and populating argv with said positional
// arguments.
module.exports = function command (yargs, usage, validation, globalMiddleware) {
const self = {}
let handlers = {}
let aliasMap = {}
let defaultCommand
globalMiddleware = globalMiddleware || []
self.addHandler = function addHandler (cmd, description, builder, handler, commandMiddleware) {
let aliases = []
const middlewares = commandMiddlewareFactory(commandMiddleware)
handler = handler || (() => {})
if (Array.isArray(cmd)) {
aliases = cmd.slice(1)
cmd = cmd[0]
} else if (typeof cmd === 'object') {
let command = (Array.isArray(cmd.command) || typeof cmd.command === 'string') ? cmd.command : moduleName(cmd)
if (cmd.aliases) command = [].concat(command).concat(cmd.aliases)
self.addHandler(command, extractDesc(cmd), cmd.builder, cmd.handler, cmd.middlewares)
return
}
// allow a module to be provided instead of separate builder and handler
if (typeof builder === 'object' && builder.builder && typeof builder.handler === 'function') {
self.addHandler([cmd].concat(aliases), description, builder.builder, builder.handler, builder.middlewares)
return
}
// parse positionals out of cmd string
const parsedCommand = self.parseCommand(cmd)
// remove positional args from aliases only
aliases = aliases.map(alias => self.parseCommand(alias).cmd)
// check for default and filter out '*''
let isDefault = false
const parsedAliases = [parsedCommand.cmd].concat(aliases).filter((c) => {
if (DEFAULT_MARKER.test(c)) {
isDefault = true
return false
}
return true
})
// standardize on $0 for default command.
if (parsedAliases.length === 0 && isDefault) parsedAliases.push('$0')
// shift cmd and aliases after filtering out '*'
if (isDefault) {
parsedCommand.cmd = parsedAliases[0]
aliases = parsedAliases.slice(1)
cmd = cmd.replace(DEFAULT_MARKER, parsedCommand.cmd)
}
// populate aliasMap
aliases.forEach((alias) => {
aliasMap[alias] = parsedCommand.cmd
})
if (description !== false) {
usage.command(cmd, description, isDefault, aliases)
}
handlers[parsedCommand.cmd] = {
original: cmd,
description: description,
handler,
builder: builder || {},
middlewares: middlewares || [],
demanded: parsedCommand.demanded,
optional: parsedCommand.optional
}
if (isDefault) defaultCommand = handlers[parsedCommand.cmd]
}
self.addDirectory = function addDirectory (dir, context, req, callerFile, opts) {
opts = opts || {}
// disable recursion to support nested directories of subcommands
if (typeof opts.recurse !== 'boolean') opts.recurse = false
// exclude 'json', 'coffee' from require-directory defaults
if (!Array.isArray(opts.extensions)) opts.extensions = ['js']
// allow consumer to define their own visitor function
const parentVisit = typeof opts.visit === 'function' ? opts.visit : o => o
// call addHandler via visitor function
opts.visit = function visit (obj, joined, filename) {
const visited = parentVisit(obj, joined, filename)
// allow consumer to skip modules with their own visitor
if (visited) {
// check for cyclic reference
// each command file path should only be seen once per execution
if (~context.files.indexOf(joined)) return visited
// keep track of visited files in context.files
context.files.push(joined)
self.addHandler(visited)
}
return visited
}
require('require-directory')({ require: req, filename: callerFile }, dir, opts)
}
// lookup module object from require()d command and derive name
// if module was not require()d and no name given, throw error
function moduleName (obj) {
const mod = require('which-module')(obj)
if (!mod) throw new Error(`No command name given for module: ${inspect(obj)}`)
return commandFromFilename(mod.filename)
}
// derive command name from filename
function commandFromFilename (filename) {
return path.basename(filename, path.extname(filename))
}
function extractDesc (obj) {
for (let keys = ['describe', 'description', 'desc'], i = 0, l = keys.length, test; i < l; i++) {
test = obj[keys[i]]
if (typeof test === 'string' || typeof test === 'boolean') return test
}
return false
}
self.parseCommand = function parseCommand (cmd) {
const extraSpacesStrippedCommand = cmd.replace(/\s{2,}/g, ' ')
const splitCommand = extraSpacesStrippedCommand.split(/\s+(?![^[]*]|[^<]*>)/)
const bregex = /\.*[\][<>]/g
const parsedCommand = {
cmd: (splitCommand.shift()).replace(bregex, ''),
demanded: [],
optional: []
}
splitCommand.forEach((cmd, i) => {
let variadic = false
cmd = cmd.replace(/\s/g, '')
if (/\.+[\]>]/.test(cmd) && i === splitCommand.length - 1) variadic = true
if (/^\[/.test(cmd)) {
parsedCommand.optional.push({
cmd: cmd.replace(bregex, '').split('|'),
variadic
})
} else {
parsedCommand.demanded.push({
cmd: cmd.replace(bregex, '').split('|'),
variadic
})
}
})
return parsedCommand
}
self.getCommands = () => Object.keys(handlers).concat(Object.keys(aliasMap))
self.getCommandHandlers = () => handlers
self.hasDefaultCommand = () => !!defaultCommand
self.runCommand = function runCommand (command, yargs, parsed, commandIndex) {
let aliases = parsed.aliases
const commandHandler = handlers[command] || handlers[aliasMap[command]] || defaultCommand
const currentContext = yargs.getContext()
let numFiles = currentContext.files.length
const parentCommands = currentContext.commands.slice()
// what does yargs look like after the builder is run?
let innerArgv = parsed.argv
let innerYargs = null
let positionalMap = {}
if (command) {
currentContext.commands.push(command)
currentContext.fullCommands.push(commandHandler.original)
}
if (typeof commandHandler.builder === 'function') {
// a function can be provided, which builds
// up a yargs chain and possibly returns it.
innerYargs = commandHandler.builder(yargs.reset(parsed.aliases))
if (!innerYargs || (typeof innerYargs._parseArgs !== 'function')) {
innerYargs = yargs
}
if (shouldUpdateUsage(innerYargs)) {
innerYargs.getUsageInstance().usage(
usageFromParentCommandsCommandHandler(parentCommands, commandHandler),
commandHandler.description
)
}
innerArgv = innerYargs._parseArgs(null, null, true, commandIndex)
aliases = innerYargs.parsed.aliases
} else if (typeof commandHandler.builder === 'object') {
// as a short hand, an object can instead be provided, specifying
// the options that a command takes.
innerYargs = yargs.reset(parsed.aliases)
if (shouldUpdateUsage(innerYargs)) {
innerYargs.getUsageInstance().usage(
usageFromParentCommandsCommandHandler(parentCommands, commandHandler),
commandHandler.description
)
}
Object.keys(commandHandler.builder).forEach((key) => {
innerYargs.option(key, commandHandler.builder[key])
})
innerArgv = innerYargs._parseArgs(null, null, true, commandIndex)
aliases = innerYargs.parsed.aliases
}
if (!yargs._hasOutput()) {
positionalMap = populatePositionals(commandHandler, innerArgv, currentContext, yargs)
}
const middlewares = globalMiddleware.slice(0).concat(commandHandler.middlewares || [])
applyMiddleware(innerArgv, yargs, middlewares, true)
// we apply validation post-hoc, so that custom
// checks get passed populated positional arguments.
if (!yargs._hasOutput()) yargs._runValidation(innerArgv, aliases, positionalMap, yargs.parsed.error)
if (commandHandler.handler && !yargs._hasOutput()) {
yargs._setHasOutput()
// to simplify the parsing of positionals in commands,
// we temporarily populate '--' rather than _, with arguments
const populateDoubleDash = !!yargs.getOptions().configuration['populate--']
if (!populateDoubleDash) yargs._copyDoubleDash(innerArgv)
innerArgv = applyMiddleware(innerArgv, yargs, middlewares, false)
let handlerResult
if (isPromise(innerArgv)) {
handlerResult = innerArgv.then(argv => commandHandler.handler(argv))
} else {
handlerResult = commandHandler.handler(innerArgv)
}
if (isPromise(handlerResult)) {
yargs.getUsageInstance().cacheHelpMessage()
handlerResult.catch(error => {
try {
yargs.getUsageInstance().fail(null, error)
} catch (err) {
// fail's throwing would cause an unhandled rejection.
}
})
}
}
if (command) {
currentContext.commands.pop()
currentContext.fullCommands.pop()
}
numFiles = currentContext.files.length - numFiles
if (numFiles > 0) currentContext.files.splice(numFiles * -1, numFiles)
return innerArgv
}
function shouldUpdateUsage (yargs) {
return !yargs.getUsageInstance().getUsageDisabled() &&
yargs.getUsageInstance().getUsage().length === 0
}
function usageFromParentCommandsCommandHandler (parentCommands, commandHandler) {
const c = DEFAULT_MARKER.test(commandHandler.original) ? commandHandler.original.replace(DEFAULT_MARKER, '').trim() : commandHandler.original
const pc = parentCommands.filter((c) => { return !DEFAULT_MARKER.test(c) })
pc.push(c)
return `$0 ${pc.join(' ')}`
}
self.runDefaultBuilderOn = function (yargs) {
if (shouldUpdateUsage(yargs)) {
// build the root-level command string from the default string.
const commandString = DEFAULT_MARKER.test(defaultCommand.original)
? defaultCommand.original : defaultCommand.original.replace(/^[^[\]<>]*/, '$0 ')
yargs.getUsageInstance().usage(
commandString,
defaultCommand.description
)
}
const builder = defaultCommand.builder
if (typeof builder === 'function') {
builder(yargs)
} else {
Object.keys(builder).forEach((key) => {
yargs.option(key, builder[key])
})
}
}
// transcribe all positional arguments "command <foo> <bar> [apple]"
// onto argv.
function populatePositionals (commandHandler, argv, context, yargs) {
argv._ = argv._.slice(context.commands.length) // nuke the current commands
const demanded = commandHandler.demanded.slice(0)
const optional = commandHandler.optional.slice(0)
const positionalMap = {}
validation.positionalCount(demanded.length, argv._.length)
while (demanded.length) {
const demand = demanded.shift()
populatePositional(demand, argv, positionalMap)
}
while (optional.length) {
const maybe = optional.shift()
populatePositional(maybe, argv, positionalMap)
}
argv._ = context.commands.concat(argv._)
postProcessPositionals(argv, positionalMap, self.cmdToParseOptions(commandHandler.original))
return positionalMap
}
function populatePositional (positional, argv, positionalMap, parseOptions) {
const cmd = positional.cmd[0]
if (positional.variadic) {
positionalMap[cmd] = argv._.splice(0).map(String)
} else {
if (argv._.length) positionalMap[cmd] = [String(argv._.shift())]
}
}
// we run yargs-parser against the positional arguments
// applying the same parsing logic used for flags.
function postProcessPositionals (argv, positionalMap, parseOptions) {
// combine the parsing hints we've inferred from the command
// string with explicitly configured parsing hints.
const options = Object.assign({}, yargs.getOptions())
options.default = Object.assign(parseOptions.default, options.default)
options.alias = Object.assign(parseOptions.alias, options.alias)
options.array = options.array.concat(parseOptions.array)
delete options.config // don't load config when processing positionals.
const unparsed = []
Object.keys(positionalMap).forEach((key) => {
positionalMap[key].map((value) => {
unparsed.push(`--${key}`)
unparsed.push(value)
})
})
// short-circuit parse.
if (!unparsed.length) return
const config = Object.assign({}, options.configuration, {
'populate--': true
})
const parsed = Parser.detailed(unparsed, Object.assign({}, options, {
configuration: config
}))
if (parsed.error) {
yargs.getUsageInstance().fail(parsed.error.message, parsed.error)
} else {
// only copy over positional keys (don't overwrite
// flag arguments that were already parsed).
const positionalKeys = Object.keys(positionalMap)
Object.keys(positionalMap).forEach((key) => {
[].push.apply(positionalKeys, parsed.aliases[key])
})
Object.keys(parsed.argv).forEach((key) => {
if (positionalKeys.indexOf(key) !== -1) {
// any new aliases need to be placed in positionalMap, which
// is used for validation.
if (!positionalMap[key]) positionalMap[key] = parsed.argv[key]
argv[key] = parsed.argv[key]
}
})
}
}
self.cmdToParseOptions = function (cmdString) {
const parseOptions = {
array: [],
default: {},
alias: {},
demand: {}
}
const parsed = self.parseCommand(cmdString)
parsed.demanded.forEach((d) => {
const cmds = d.cmd.slice(0)
const cmd = cmds.shift()
if (d.variadic) {
parseOptions.array.push(cmd)
parseOptions.default[cmd] = []
}
cmds.forEach((c) => {
parseOptions.alias[cmd] = c
})
parseOptions.demand[cmd] = true
})
parsed.optional.forEach((o) => {
const cmds = o.cmd.slice(0)
const cmd = cmds.shift()
if (o.variadic) {
parseOptions.array.push(cmd)
parseOptions.default[cmd] = []
}
cmds.forEach((c) => {
parseOptions.alias[cmd] = c
})
})
return parseOptions
}
self.reset = () => {
handlers = {}
aliasMap = {}
defaultCommand = undefined
return self
}
// used by yargs.parse() to freeze
// the state of commands such that
// we can apply .parse() multiple times
// with the same yargs instance.
let frozens = []
self.freeze = () => {
let frozen = {}
frozens.push(frozen)
frozen.handlers = handlers
frozen.aliasMap = aliasMap
frozen.defaultCommand = defaultCommand
}
self.unfreeze = () => {
let frozen = frozens.pop()
handlers = frozen.handlers
aliasMap = frozen.aliasMap
defaultCommand = frozen.defaultCommand
}
return self
}

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exports.completionShTemplate =
`###-begin-{{app_name}}-completions-###
#
# yargs command completion script
#
# Installation: {{app_path}} {{completion_command}} >> ~/.bashrc
# or {{app_path}} {{completion_command}} >> ~/.bash_profile on OSX.
#
_yargs_completions()
{
local cur_word args type_list
cur_word="\${COMP_WORDS[COMP_CWORD]}"
args=("\${COMP_WORDS[@]}")
# ask yargs to generate completions.
type_list=$({{app_path}} --get-yargs-completions "\${args[@]}")
COMPREPLY=( $(compgen -W "\${type_list}" -- \${cur_word}) )
# if no match was found, fall back to filename completion
if [ \${#COMPREPLY[@]} -eq 0 ]; then
COMPREPLY=()
fi
return 0
}
complete -o default -F _yargs_completions {{app_name}}
###-end-{{app_name}}-completions-###
`
exports.completionZshTemplate = `###-begin-{{app_name}}-completions-###
#
# yargs command completion script
#
# Installation: {{app_path}} {{completion_command}} >> ~/.zshrc
# or {{app_path}} {{completion_command}} >> ~/.zsh_profile on OSX.
#
_{{app_name}}_yargs_completions()
{
local reply
local si=$IFS
IFS=$'\n' reply=($(COMP_CWORD="$((CURRENT-1))" COMP_LINE="$BUFFER" COMP_POINT="$CURSOR" {{app_path}} --get-yargs-completions "\${words[@]}"))
IFS=$si
_describe 'values' reply
}
compdef _{{app_name}}_yargs_completions {{app_name}}
###-end-{{app_name}}-completions-###
`

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node_modules/metro-inspector-proxy/node_modules/yargs/lib/completion.js generated vendored Normal file
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'use strict'
const path = require('path')
// add bash completions to your
// yargs-powered applications.
module.exports = function completion (yargs, usage, command) {
const self = {
completionKey: 'get-yargs-completions'
}
const zshShell = (process.env.SHELL && process.env.SHELL.indexOf('zsh') !== -1) ||
(process.env.ZSH_NAME && process.env.ZSH_NAME.indexOf('zsh') !== -1)
// get a list of completion commands.
// 'args' is the array of strings from the line to be completed
self.getCompletion = function getCompletion (args, done) {
const completions = []
const current = args.length ? args[args.length - 1] : ''
const argv = yargs.parse(args, true)
const aliases = yargs.parsed.aliases
const parentCommands = yargs.getContext().commands
// a custom completion function can be provided
// to completion().
if (completionFunction) {
if (completionFunction.length < 3) {
const result = completionFunction(current, argv)
// promise based completion function.
if (typeof result.then === 'function') {
return result.then((list) => {
process.nextTick(() => { done(list) })
}).catch((err) => {
process.nextTick(() => { throw err })
})
}
// synchronous completion function.
return done(result)
} else {
// asynchronous completion function
return completionFunction(current, argv, (completions) => {
done(completions)
})
}
}
const handlers = command.getCommandHandlers()
for (let i = 0, ii = args.length; i < ii; ++i) {
if (handlers[args[i]] && handlers[args[i]].builder) {
const builder = handlers[args[i]].builder
if (typeof builder === 'function') {
const y = yargs.reset()
builder(y)
return y.argv
}
}
}
if (!current.match(/^-/) && parentCommands[parentCommands.length - 1] !== current) {
usage.getCommands().forEach((usageCommand) => {
const commandName = command.parseCommand(usageCommand[0]).cmd
if (args.indexOf(commandName) === -1) {
if (!zshShell) {
completions.push(commandName)
} else {
const desc = usageCommand[1] || ''
completions.push(commandName.replace(/:/g, '\\:') + ':' + desc)
}
}
})
}
if (current.match(/^-/) || (current === '' && completions.length === 0)) {
const descs = usage.getDescriptions()
Object.keys(yargs.getOptions().key).forEach((key) => {
// If the key and its aliases aren't in 'args', add the key to 'completions'
const keyAndAliases = [key].concat(aliases[key] || [])
const notInArgs = keyAndAliases.every(val => args.indexOf(`--${val}`) === -1)
if (notInArgs) {
if (!zshShell) {
completions.push(`--${key}`)
} else {
const desc = descs[key] || ''
completions.push(`--${key.replace(/:/g, '\\:')}:${desc.replace('__yargsString__:', '')}`)
}
}
})
}
done(completions)
}
// generate the completion script to add to your .bashrc.
self.generateCompletionScript = function generateCompletionScript ($0, cmd) {
const templates = require('./completion-templates')
let script = zshShell ? templates.completionZshTemplate : templates.completionShTemplate
const name = path.basename($0)
// add ./to applications not yet installed as bin.
if ($0.match(/\.js$/)) $0 = `./${$0}`
script = script.replace(/{{app_name}}/g, name)
script = script.replace(/{{completion_command}}/g, cmd)
return script.replace(/{{app_path}}/g, $0)
}
// register a function to perform your own custom
// completions., this function can be either
// synchrnous or asynchronous.
let completionFunction = null
self.registerFunction = (fn) => {
completionFunction = fn
}
return self
}

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node_modules/metro-inspector-proxy/node_modules/yargs/lib/is-promise.js generated vendored Normal file
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module.exports = function isPromise (maybePromise) {
return !!maybePromise && !!maybePromise.then && (typeof maybePromise.then === 'function')
}

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node_modules/metro-inspector-proxy/node_modules/yargs/lib/levenshtein.js generated vendored Normal file
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/*
Copyright (c) 2011 Andrei Mackenzie
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.
*/
// levenshtein distance algorithm, pulled from Andrei Mackenzie's MIT licensed.
// gist, which can be found here: https://gist.github.com/andrei-m/982927
'use strict'
// Compute the edit distance between the two given strings
module.exports = function levenshtein (a, b) {
if (a.length === 0) return b.length
if (b.length === 0) return a.length
const matrix = []
// increment along the first column of each row
let i
for (i = 0; i <= b.length; i++) {
matrix[i] = [i]
}
// increment each column in the first row
let j
for (j = 0; j <= a.length; j++) {
matrix[0][j] = j
}
// Fill in the rest of the matrix
for (i = 1; i <= b.length; i++) {
for (j = 1; j <= a.length; j++) {
if (b.charAt(i - 1) === a.charAt(j - 1)) {
matrix[i][j] = matrix[i - 1][j - 1]
} else {
matrix[i][j] = Math.min(matrix[i - 1][j - 1] + 1, // substitution
Math.min(matrix[i][j - 1] + 1, // insertion
matrix[i - 1][j] + 1)) // deletion
}
}
}
return matrix[b.length][a.length]
}

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node_modules/metro-inspector-proxy/node_modules/yargs/lib/middleware.js generated vendored Normal file
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'use strict'
// hoisted due to circular dependency on command.
module.exports = {
applyMiddleware,
commandMiddlewareFactory,
globalMiddlewareFactory
}
const isPromise = require('./is-promise')
const argsert = require('./argsert')
function globalMiddlewareFactory (globalMiddleware, context) {
return function (callback, applyBeforeValidation = false) {
argsert('<array|function> [boolean]', [callback, applyBeforeValidation], arguments.length)
if (Array.isArray(callback)) {
for (let i = 0; i < callback.length; i++) {
if (typeof callback[i] !== 'function') {
throw Error('middleware must be a function')
}
callback[i].applyBeforeValidation = applyBeforeValidation
}
Array.prototype.push.apply(globalMiddleware, callback)
} else if (typeof callback === 'function') {
callback.applyBeforeValidation = applyBeforeValidation
globalMiddleware.push(callback)
}
return context
}
}
function commandMiddlewareFactory (commandMiddleware) {
if (!commandMiddleware) return []
return commandMiddleware.map(middleware => {
middleware.applyBeforeValidation = false
return middleware
})
}
function applyMiddleware (argv, yargs, middlewares, beforeValidation) {
const beforeValidationError = new Error('middleware cannot return a promise when applyBeforeValidation is true')
return middlewares
.reduce((accumulation, middleware) => {
if (middleware.applyBeforeValidation !== beforeValidation) {
return accumulation
}
if (isPromise(accumulation)) {
return accumulation
.then(initialObj =>
Promise.all([initialObj, middleware(initialObj, yargs)])
)
.then(([initialObj, middlewareObj]) =>
Object.assign(initialObj, middlewareObj)
)
} else {
const result = middleware(argv, yargs)
if (beforeValidation && isPromise(result)) throw beforeValidationError
return isPromise(result)
? result.then(middlewareObj => Object.assign(accumulation, middlewareObj))
: Object.assign(accumulation, result)
}
}, argv)
}

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node_modules/metro-inspector-proxy/node_modules/yargs/lib/obj-filter.js generated vendored Normal file
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'use strict'
module.exports = function objFilter (original, filter) {
const obj = {}
filter = filter || ((k, v) => true)
Object.keys(original || {}).forEach((key) => {
if (filter(key, original[key])) {
obj[key] = original[key]
}
})
return obj
}

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