diff --git a/node_modules/grunt-contrib-copy/node_modules/file-sync-cmp/.npmignore b/.gitignore
similarity index 82%
rename from node_modules/grunt-contrib-copy/node_modules/file-sync-cmp/.npmignore
rename to .gitignore
index 50a0c39..c2658d7 100644
--- a/node_modules/grunt-contrib-copy/node_modules/file-sync-cmp/.npmignore
+++ b/.gitignore
@@ -1,2 +1 @@
-*~
node_modules/
diff --git a/node_modules/.bin/grunt b/node_modules/.bin/grunt
deleted file mode 100644
index e78c5db..0000000
--- a/node_modules/.bin/grunt
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/bin/sh
-basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
-
-case `uname` in
- *CYGWIN*) basedir=`cygpath -w "$basedir"`;;
-esac
-
-if [ -x "$basedir/node" ]; then
- "$basedir/node" "$basedir/../grunt/bin/grunt" "$@"
- ret=$?
-else
- node "$basedir/../grunt/bin/grunt" "$@"
- ret=$?
-fi
-exit $ret
diff --git a/node_modules/.bin/grunt.cmd b/node_modules/.bin/grunt.cmd
deleted file mode 100644
index edd95d5..0000000
--- a/node_modules/.bin/grunt.cmd
+++ /dev/null
@@ -1,7 +0,0 @@
-@IF EXIST "%~dp0\node.exe" (
- "%~dp0\node.exe" "%~dp0\..\grunt\bin\grunt" %*
-) ELSE (
- @SETLOCAL
- @SET PATHEXT=%PATHEXT:;.JS;=;%
- node "%~dp0\..\grunt\bin\grunt" %*
-)
\ No newline at end of file
diff --git a/node_modules/.bin/semver b/node_modules/.bin/semver
deleted file mode 100644
index d592e69..0000000
--- a/node_modules/.bin/semver
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/bin/sh
-basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
-
-case `uname` in
- *CYGWIN*) basedir=`cygpath -w "$basedir"`;;
-esac
-
-if [ -x "$basedir/node" ]; then
- "$basedir/node" "$basedir/../semver/bin/semver" "$@"
- ret=$?
-else
- node "$basedir/../semver/bin/semver" "$@"
- ret=$?
-fi
-exit $ret
diff --git a/node_modules/.bin/semver.cmd b/node_modules/.bin/semver.cmd
deleted file mode 100644
index 37c00a4..0000000
--- a/node_modules/.bin/semver.cmd
+++ /dev/null
@@ -1,7 +0,0 @@
-@IF EXIST "%~dp0\node.exe" (
- "%~dp0\node.exe" "%~dp0\..\semver\bin\semver" %*
-) ELSE (
- @SETLOCAL
- @SET PATHEXT=%PATHEXT:;.JS;=;%
- node "%~dp0\..\semver\bin\semver" %*
-)
\ No newline at end of file
diff --git a/node_modules/.bin/shjs b/node_modules/.bin/shjs
deleted file mode 100644
index 1d45691..0000000
--- a/node_modules/.bin/shjs
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/bin/sh
-basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
-
-case `uname` in
- *CYGWIN*) basedir=`cygpath -w "$basedir"`;;
-esac
-
-if [ -x "$basedir/node" ]; then
- "$basedir/node" "$basedir/../shelljs/bin/shjs" "$@"
- ret=$?
-else
- node "$basedir/../shelljs/bin/shjs" "$@"
- ret=$?
-fi
-exit $ret
diff --git a/node_modules/.bin/shjs.cmd b/node_modules/.bin/shjs.cmd
deleted file mode 100644
index 3d98b0b..0000000
--- a/node_modules/.bin/shjs.cmd
+++ /dev/null
@@ -1,7 +0,0 @@
-@IF EXIST "%~dp0\node.exe" (
- "%~dp0\node.exe" "%~dp0\..\shelljs\bin\shjs" %*
-) ELSE (
- @SETLOCAL
- @SET PATHEXT=%PATHEXT:;.JS;=;%
- node "%~dp0\..\shelljs\bin\shjs" %*
-)
\ No newline at end of file
diff --git a/node_modules/grunt-contrib-clean/CHANGELOG b/node_modules/grunt-contrib-clean/CHANGELOG
deleted file mode 100644
index 0f55e54..0000000
--- a/node_modules/grunt-contrib-clean/CHANGELOG
+++ /dev/null
@@ -1,52 +0,0 @@
-v1.0.0:
- date: 2016-02-15
- changes:
- - Drop support for Node.js v0.8
- - Grunt peer dependency tagged `>= 0.4.5`
- - Dependency updates
-v0.7.0:
- date: 2015-11-13
- changes:
- - Dependency updates
-v0.6.0:
- date: 2014-07-27
- changes:
- - Less verbose output.
- - README updates.
-v0.5.0:
- date: 2013-07-15
- changes:
- - Use rimraf directly, version 2.2.1 to fix issue on Windows.
- - Add no-write option to mimic grunt.file.delete behavior.
-v0.4.1:
- date: 2013-04-16
- changes:
- - Check if file exists to avoid trying to delete a non-existent file.
-v0.4.0:
- date: 2013-02-15
- changes:
- - First official release for Grunt 0.4.0.
-v0.4.0rc6:
- date: 2013-01-18
- changes:
- - Updating grunt/gruntplugin dependencies to rc6.
- - Changing in-development grunt/gruntplugin dependency versions from tilde version ranges to specific versions.
-v0.4.0rc5:
- date: 2013-01-09
- changes:
- - Updating to work with grunt v0.4.0rc5.
- - Switching to this.filesSrc api.
-v0.4.0a:
- date: 2012-12-07
- changes:
- - Conversion to grunt v0.4 conventions.
- - Remove node v0.6 and grunt v0.3 support.
- - Add force option to bypass CWD check.
-v0.3.0:
- date: 2012-09-23
- changes:
- - Options no longer accepted from global config key.
-v0.2.0:
- date: 2012-09-10
- changes:
- - Refactored from grunt-contrib into individual repo.
diff --git a/node_modules/grunt-contrib-clean/README.md b/node_modules/grunt-contrib-clean/README.md
deleted file mode 100644
index f93ec03..0000000
--- a/node_modules/grunt-contrib-clean/README.md
+++ /dev/null
@@ -1,163 +0,0 @@
-# grunt-contrib-clean v0.7.0 [](https://travis-ci.org/gruntjs/grunt-contrib-clean) [](https://ci.appveyor.com/project/gruntjs/grunt-contrib-clean/branch/master)
-
-> Clean files and folders
-
-
-
-## Getting Started
-
-If you haven't used [Grunt](http://gruntjs.com/) before, be sure to check out the [Getting Started](http://gruntjs.com/getting-started) guide, as it explains how to create a [Gruntfile](http://gruntjs.com/sample-gruntfile) as well as install and use Grunt plugins. Once you're familiar with that process, you may install this plugin with this command:
-
-```shell
-npm install grunt-contrib-clean --save-dev
-```
-
-Once the plugin has been installed, it may be enabled inside your Gruntfile with this line of JavaScript:
-
-```js
-grunt.loadNpmTasks('grunt-contrib-clean');
-```
-
-*This plugin was designed to work with Grunt 0.4.x. If you're still using grunt v0.3.x it's strongly recommended that [you upgrade](http://gruntjs.com/upgrading-from-0.3-to-0.4), but in case you can't please use [v0.3.2](https://github.com/gruntjs/grunt-contrib-clean/tree/grunt-0.3-stable).*
-
-
-
-## Clean task
-_Run this task with the `grunt clean` command._
-
-Task targets, files and options may be specified according to the grunt [Configuring tasks](http://gruntjs.com/configuring-tasks) guide.
-
-*Due to the destructive nature of this task, always be cautious of the paths you clean.*
-### Options
-
-#### force
-Type: `Boolean`
-Default: `false`
-
-This overrides this task from blocking deletion of folders outside current working dir (CWD). Use with caution.
-
-#### no-write
-Type: `Boolean`
-Default: `false`
-
-Will not actually delete any files or directories.
-If the task is run with the `--verbose` flag, the task will log messages of what files would have be deleted.
-
-_Note: As this task property contains a hyphen, you will need to surround it with quotes._
-
-### Usage Examples
-
-There are three formats you can use to run this task.
-
-#### Short
-
-```js
-clean: ["path/to/dir/one", "path/to/dir/two"]
-```
-
-#### Medium (specific targets with global options)
-
-```js
-clean: {
- build: ["path/to/dir/one", "path/to/dir/two"],
- release: ["path/to/another/dir/one", "path/to/another/dir/two"]
-},
-```
-
-#### Long (specific targets with per target options)
-
-```js
-clean: {
- build: {
- src: ["path/to/dir/one", "path/to/dir/two"]
- }
-}
-```
-
-"Compact" and "Files Array" formats support a few [additional properties](http://gruntjs.com/configuring-tasks#files)
-which help you deal with hidden files, process dynamic mappings and so on.
-
-#### Globbing Patterns
-
-Although documented [in the Grunt Docs](http://gruntjs.com/configuring-tasks#globbing-patterns), here are some globbing pattern examples to achieve some common tasks:
-
-```js
-clean: {
- folder: ['path/to/dir/'],
- folder_v2: ['path/to/dir/**'],
- contents: ['path/to/dir/*'],
- subfolders: ['path/to/dir/*/'],
- css: ['path/to/dir/*.css'],
- all_css: ['path/to/dir/**/*.css']
-}
-```
-
-* __`folder`:__ Deletes the `dir/` folder
-* __`folder_v2`:__ Deletes the `dir/` folder
-* __`contents`:__ Keeps the `dir/` folder, but deletes the contents
-* __`subfolders`:__ Keeps the files inside the `dir/` folder, but deletes all subfolders
-* __`css`:__ Deletes all `*.css` files inside the `dir/` folder, excluding subfolders
-* __`all_css`:__ Deletes all `*.css` files inside the `dir/` folder and its subfolders
-
-##### Skipping Files
-
-```js
-// Deletes all .js files, but skips min.js files
-clean: {
- js: ["path/to/dir/*.js", "!path/to/dir/*.min.js"]
-}
-```
-
-###### Options
-
-Options can be specified for all `clean` tasks and for each `clean:target`.
-
-####### All tasks
-
-```js
-// Prevents all targets from deleting any files
-clean: {
- options: {
- 'no-write': true
- },
- build: ['dev/build'],
- release: ['dist']
-}
-```
-
-####### Per-target
-
-```js
-// Will delete files for `build` target
-// Will NOT delete files for `release` target
-clean: {
- build: ['dev/build'],
- release: {
- options: {
- 'no-write': true
- },
- src: ['dist']
- }
-}
-```
-
-
-## Release History
-
- * 2016-02-15 v1.0.0 Drop support for Node.js v0.8 Grunt peer dependency tagged `>= 0.4.5` Dependency updates
- * 2015-11-13 v0.7.0 Dependency updates
- * 2014-07-27 v0.6.0 Less verbose output. README updates.
- * 2013-07-15 v0.5.0 Use rimraf directly, version 2.2.1 to fix issue on Windows. Add no-write option to mimic grunt.file.delete behavior.
- * 2013-04-16 v0.4.1 Check if file exists to avoid trying to delete a non-existent file.
- * 2013-02-15 v0.4.0 First official release for Grunt 0.4.0.
- * 2013-01-18 v0.4.0rc6 Updating grunt/gruntplugin dependencies to rc6. Changing in-development grunt/gruntplugin dependency versions from tilde version ranges to specific versions.
- * 2013-01-09 v0.4.0rc5 Updating to work with grunt v0.4.0rc5. Switching to this.filesSrc api.
- * 2012-12-07 v0.4.0a Conversion to grunt v0.4 conventions. Remove node v0.6 and grunt v0.3 support. Add force option to bypass CWD check.
- * 2012-09-23 v0.3.0 Options no longer accepted from global config key.
- * 2012-09-10 v0.2.0 Refactored from grunt-contrib into individual repo.
-
----
-
-Task submitted by [Tim Branyen](http://tbranyen.com/)
-
-*This file was generated on Mon Feb 15 2016 13:42:25.*
diff --git a/node_modules/grunt-contrib-clean/node_modules/.bin/rimraf b/node_modules/grunt-contrib-clean/node_modules/.bin/rimraf
deleted file mode 100644
index 3cebd6e..0000000
--- a/node_modules/grunt-contrib-clean/node_modules/.bin/rimraf
+++ /dev/null
@@ -1,15 +0,0 @@
-#!/bin/sh
-basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
-
-case `uname` in
- *CYGWIN*) basedir=`cygpath -w "$basedir"`;;
-esac
-
-if [ -x "$basedir/node" ]; then
- "$basedir/node" "$basedir/../rimraf/bin.js" "$@"
- ret=$?
-else
- node "$basedir/../rimraf/bin.js" "$@"
- ret=$?
-fi
-exit $ret
diff --git a/node_modules/grunt-contrib-clean/node_modules/.bin/rimraf.cmd b/node_modules/grunt-contrib-clean/node_modules/.bin/rimraf.cmd
deleted file mode 100644
index 9333ec6..0000000
--- a/node_modules/grunt-contrib-clean/node_modules/.bin/rimraf.cmd
+++ /dev/null
@@ -1,7 +0,0 @@
-@IF EXIST "%~dp0\node.exe" (
- "%~dp0\node.exe" "%~dp0\..\rimraf\bin.js" %*
-) ELSE (
- @SETLOCAL
- @SET PATHEXT=%PATHEXT:;.JS;=;%
- node "%~dp0\..\rimraf\bin.js" %*
-)
\ No newline at end of file
diff --git a/node_modules/grunt-contrib-clean/node_modules/async/CHANGELOG.md b/node_modules/grunt-contrib-clean/node_modules/async/CHANGELOG.md
deleted file mode 100644
index f15e081..0000000
--- a/node_modules/grunt-contrib-clean/node_modules/async/CHANGELOG.md
+++ /dev/null
@@ -1,125 +0,0 @@
-# v1.5.2
-- Allow using `"consructor"` as an argument in `memoize` (#998)
-- Give a better error messsage when `auto` dependency checking fails (#994)
-- Various doc updates (#936, #956, #979, #1002)
-
-# v1.5.1
-- Fix issue with `pause` in `queue` with concurrency enabled (#946)
-- `while` and `until` now pass the final result to callback (#963)
-- `auto` will properly handle concurrency when there is no callback (#966)
-- `auto` will now properly stop execution when an error occurs (#988, #993)
-- Various doc fixes (#971, #980)
-
-# v1.5.0
-
-- Added `transform`, analogous to [`_.transform`](http://lodash.com/docs#transform) (#892)
-- `map` now returns an object when an object is passed in, rather than array with non-numeric keys. `map` will begin always returning an array with numeric indexes in the next major release. (#873)
-- `auto` now accepts an optional `concurrency` argument to limit the number of running tasks (#637)
-- Added `queue#workersList()`, to retrieve the list of currently running tasks. (#891)
-- Various code simplifications (#896, #904)
-- Various doc fixes :scroll: (#890, #894, #903, #905, #912)
-
-# v1.4.2
-
-- Ensure coverage files don't get published on npm (#879)
-
-# v1.4.1
-
-- Add in overlooked `detectLimit` method (#866)
-- Removed unnecessary files from npm releases (#861)
-- Removed usage of a reserved word to prevent :boom: in older environments (#870)
-
-# v1.4.0
-
-- `asyncify` now supports promises (#840)
-- Added `Limit` versions of `filter` and `reject` (#836)
-- Add `Limit` versions of `detect`, `some` and `every` (#828, #829)
-- `some`, `every` and `detect` now short circuit early (#828, #829)
-- Improve detection of the global object (#804), enabling use in WebWorkers
-- `whilst` now called with arguments from iterator (#823)
-- `during` now gets called with arguments from iterator (#824)
-- Code simplifications and optimizations aplenty ([diff](https://github.com/caolan/async/compare/v1.3.0...v1.4.0))
-
-
-# v1.3.0
-
-New Features:
-- Added `constant`
-- Added `asyncify`/`wrapSync` for making sync functions work with callbacks. (#671, #806)
-- Added `during` and `doDuring`, which are like `whilst` with an async truth test. (#800)
-- `retry` now accepts an `interval` parameter to specify a delay between retries. (#793)
-- `async` should work better in Web Workers due to better `root` detection (#804)
-- Callbacks are now optional in `whilst`, `doWhilst`, `until`, and `doUntil` (#642)
-- Various internal updates (#786, #801, #802, #803)
-- Various doc fixes (#790, #794)
-
-Bug Fixes:
-- `cargo` now exposes the `payload` size, and `cargo.payload` can be changed on the fly after the `cargo` is created. (#740, #744, #783)
-
-
-# v1.2.1
-
-Bug Fix:
-
-- Small regression with synchronous iterator behavior in `eachSeries` with a 1-element array. Before 1.1.0, `eachSeries`'s callback was called on the same tick, which this patch restores. In 2.0.0, it will be called on the next tick. (#782)
-
-
-# v1.2.0
-
-New Features:
-
-- Added `timesLimit` (#743)
-- `concurrency` can be changed after initialization in `queue` by setting `q.concurrency`. The new concurrency will be reflected the next time a task is processed. (#747, #772)
-
-Bug Fixes:
-
-- Fixed a regression in `each` and family with empty arrays that have additional properties. (#775, #777)
-
-
-# v1.1.1
-
-Bug Fix:
-
-- Small regression with synchronous iterator behavior in `eachSeries` with a 1-element array. Before 1.1.0, `eachSeries`'s callback was called on the same tick, which this patch restores. In 2.0.0, it will be called on the next tick. (#782)
-
-
-# v1.1.0
-
-New Features:
-
-- `cargo` now supports all of the same methods and event callbacks as `queue`.
-- Added `ensureAsync` - A wrapper that ensures an async function calls its callback on a later tick. (#769)
-- Optimized `map`, `eachOf`, and `waterfall` families of functions
-- Passing a `null` or `undefined` array to `map`, `each`, `parallel` and families will be treated as an empty array (#667).
-- The callback is now optional for the composed results of `compose` and `seq`. (#618)
-- Reduced file size by 4kb, (minified version by 1kb)
-- Added code coverage through `nyc` and `coveralls` (#768)
-
-Bug Fixes:
-
-- `forever` will no longer stack overflow with a synchronous iterator (#622)
-- `eachLimit` and other limit functions will stop iterating once an error occurs (#754)
-- Always pass `null` in callbacks when there is no error (#439)
-- Ensure proper conditions when calling `drain()` after pushing an empty data set to a queue (#668)
-- `each` and family will properly handle an empty array (#578)
-- `eachSeries` and family will finish if the underlying array is modified during execution (#557)
-- `queue` will throw if a non-function is passed to `q.push()` (#593)
-- Doc fixes (#629, #766)
-
-
-# v1.0.0
-
-No known breaking changes, we are simply complying with semver from here on out.
-
-Changes:
-
-- Start using a changelog!
-- Add `forEachOf` for iterating over Objects (or to iterate Arrays with indexes available) (#168 #704 #321)
-- Detect deadlocks in `auto` (#663)
-- Better support for require.js (#527)
-- Throw if queue created with concurrency `0` (#714)
-- Fix unneeded iteration in `queue.resume()` (#758)
-- Guard against timer mocking overriding `setImmediate` (#609 #611)
-- Miscellaneous doc fixes (#542 #596 #615 #628 #631 #690 #729)
-- Use single noop function internally (#546)
-- Optimize internal `_each`, `_map` and `_keys` functions.
diff --git a/node_modules/grunt-contrib-clean/node_modules/async/LICENSE b/node_modules/grunt-contrib-clean/node_modules/async/LICENSE
deleted file mode 100644
index 8f29698..0000000
--- a/node_modules/grunt-contrib-clean/node_modules/async/LICENSE
+++ /dev/null
@@ -1,19 +0,0 @@
-Copyright (c) 2010-2014 Caolan McMahon
-
-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.
diff --git a/node_modules/grunt-contrib-clean/node_modules/async/README.md b/node_modules/grunt-contrib-clean/node_modules/async/README.md
deleted file mode 100644
index 316c405..0000000
--- a/node_modules/grunt-contrib-clean/node_modules/async/README.md
+++ /dev/null
@@ -1,1877 +0,0 @@
-# Async.js
-
-[](https://travis-ci.org/caolan/async)
-[](https://www.npmjs.org/package/async)
-[](https://coveralls.io/r/caolan/async?branch=master)
-[](https://gitter.im/caolan/async?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
-
-
-Async is a utility module which provides straight-forward, powerful functions
-for working with asynchronous JavaScript. Although originally designed for
-use with [Node.js](http://nodejs.org) and installable via `npm install async`,
-it can also be used directly in the browser.
-
-Async is also installable via:
-
-- [bower](http://bower.io/): `bower install async`
-- [component](https://github.com/component/component): `component install
- caolan/async`
-- [jam](http://jamjs.org/): `jam install async`
-- [spm](http://spmjs.io/): `spm install async`
-
-Async provides around 20 functions that include the usual 'functional'
-suspects (`map`, `reduce`, `filter`, `each`…) as well as some common patterns
-for asynchronous control flow (`parallel`, `series`, `waterfall`…). All these
-functions assume you follow the Node.js convention of providing a single
-callback as the last argument of your `async` function.
-
-
-## Quick Examples
-
-```javascript
-async.map(['file1','file2','file3'], fs.stat, function(err, results){
- // results is now an array of stats for each file
-});
-
-async.filter(['file1','file2','file3'], fs.exists, function(results){
- // results now equals an array of the existing files
-});
-
-async.parallel([
- function(){ ... },
- function(){ ... }
-], callback);
-
-async.series([
- function(){ ... },
- function(){ ... }
-]);
-```
-
-There are many more functions available so take a look at the docs below for a
-full list. This module aims to be comprehensive, so if you feel anything is
-missing please create a GitHub issue for it.
-
-## Common Pitfalls [(StackOverflow)](http://stackoverflow.com/questions/tagged/async.js)
-### Synchronous iteration functions
-
-If you get an error like `RangeError: Maximum call stack size exceeded.` or other stack overflow issues when using async, you are likely using a synchronous iterator. By *synchronous* we mean a function that calls its callback on the same tick in the javascript event loop, without doing any I/O or using any timers. Calling many callbacks iteratively will quickly overflow the stack. If you run into this issue, just defer your callback with `async.setImmediate` to start a new call stack on the next tick of the event loop.
-
-This can also arise by accident if you callback early in certain cases:
-
-```js
-async.eachSeries(hugeArray, function iterator(item, callback) {
- if (inCache(item)) {
- callback(null, cache[item]); // if many items are cached, you'll overflow
- } else {
- doSomeIO(item, callback);
- }
-}, function done() {
- //...
-});
-```
-
-Just change it to:
-
-```js
-async.eachSeries(hugeArray, function iterator(item, callback) {
- if (inCache(item)) {
- async.setImmediate(function () {
- callback(null, cache[item]);
- });
- } else {
- doSomeIO(item, callback);
- //...
-```
-
-Async guards against synchronous functions in some, but not all, cases. If you are still running into stack overflows, you can defer as suggested above, or wrap functions with [`async.ensureAsync`](#ensureAsync) Functions that are asynchronous by their nature do not have this problem and don't need the extra callback deferral.
-
-If JavaScript's event loop is still a bit nebulous, check out [this article](http://blog.carbonfive.com/2013/10/27/the-javascript-event-loop-explained/) or [this talk](http://2014.jsconf.eu/speakers/philip-roberts-what-the-heck-is-the-event-loop-anyway.html) for more detailed information about how it works.
-
-
-### Multiple callbacks
-
-Make sure to always `return` when calling a callback early, otherwise you will cause multiple callbacks and unpredictable behavior in many cases.
-
-```js
-async.waterfall([
- function (callback) {
- getSomething(options, function (err, result) {
- if (err) {
- callback(new Error("failed getting something:" + err.message));
- // we should return here
- }
- // since we did not return, this callback still will be called and
- // `processData` will be called twice
- callback(null, result);
- });
- },
- processData
-], done)
-```
-
-It is always good practice to `return callback(err, result)` whenever a callback call is not the last statement of a function.
-
-
-### Binding a context to an iterator
-
-This section is really about `bind`, not about `async`. If you are wondering how to
-make `async` execute your iterators in a given context, or are confused as to why
-a method of another library isn't working as an iterator, study this example:
-
-```js
-// Here is a simple object with an (unnecessarily roundabout) squaring method
-var AsyncSquaringLibrary = {
- squareExponent: 2,
- square: function(number, callback){
- var result = Math.pow(number, this.squareExponent);
- setTimeout(function(){
- callback(null, result);
- }, 200);
- }
-};
-
-async.map([1, 2, 3], AsyncSquaringLibrary.square, function(err, result){
- // result is [NaN, NaN, NaN]
- // This fails because the `this.squareExponent` expression in the square
- // function is not evaluated in the context of AsyncSquaringLibrary, and is
- // therefore undefined.
-});
-
-async.map([1, 2, 3], AsyncSquaringLibrary.square.bind(AsyncSquaringLibrary), function(err, result){
- // result is [1, 4, 9]
- // With the help of bind we can attach a context to the iterator before
- // passing it to async. Now the square function will be executed in its
- // 'home' AsyncSquaringLibrary context and the value of `this.squareExponent`
- // will be as expected.
-});
-```
-
-## Download
-
-The source is available for download from
-[GitHub](https://github.com/caolan/async/blob/master/lib/async.js).
-Alternatively, you can install using Node Package Manager (`npm`):
-
- npm install async
-
-As well as using Bower:
-
- bower install async
-
-__Development:__ [async.js](https://github.com/caolan/async/raw/master/lib/async.js) - 29.6kb Uncompressed
-
-## In the Browser
-
-So far it's been tested in IE6, IE7, IE8, FF3.6 and Chrome 5.
-
-Usage:
-
-```html
-
-
-```
-
-## Documentation
-
-Some functions are also available in the following forms:
-* `Series` - the same as `` but runs only a single async operation at a time
-* `Limit` - the same as `` but runs a maximum of `limit` async operations at a time
-
-### Collections
-
-* [`each`](#each), `eachSeries`, `eachLimit`
-* [`forEachOf`](#forEachOf), `forEachOfSeries`, `forEachOfLimit`
-* [`map`](#map), `mapSeries`, `mapLimit`
-* [`filter`](#filter), `filterSeries`, `filterLimit`
-* [`reject`](#reject), `rejectSeries`, `rejectLimit`
-* [`reduce`](#reduce), [`reduceRight`](#reduceRight)
-* [`detect`](#detect), `detectSeries`, `detectLimit`
-* [`sortBy`](#sortBy)
-* [`some`](#some), `someLimit`
-* [`every`](#every), `everyLimit`
-* [`concat`](#concat), `concatSeries`
-
-### Control Flow
-
-* [`series`](#seriestasks-callback)
-* [`parallel`](#parallel), `parallelLimit`
-* [`whilst`](#whilst), [`doWhilst`](#doWhilst)
-* [`until`](#until), [`doUntil`](#doUntil)
-* [`during`](#during), [`doDuring`](#doDuring)
-* [`forever`](#forever)
-* [`waterfall`](#waterfall)
-* [`compose`](#compose)
-* [`seq`](#seq)
-* [`applyEach`](#applyEach), `applyEachSeries`
-* [`queue`](#queue), [`priorityQueue`](#priorityQueue)
-* [`cargo`](#cargo)
-* [`auto`](#auto)
-* [`retry`](#retry)
-* [`iterator`](#iterator)
-* [`times`](#times), `timesSeries`, `timesLimit`
-
-### Utils
-
-* [`apply`](#apply)
-* [`nextTick`](#nextTick)
-* [`memoize`](#memoize)
-* [`unmemoize`](#unmemoize)
-* [`ensureAsync`](#ensureAsync)
-* [`constant`](#constant)
-* [`asyncify`](#asyncify)
-* [`wrapSync`](#wrapSync)
-* [`log`](#log)
-* [`dir`](#dir)
-* [`noConflict`](#noConflict)
-
-## Collections
-
-
-
-### each(arr, iterator, [callback])
-
-Applies the function `iterator` to each item in `arr`, in parallel.
-The `iterator` is called with an item from the list, and a callback for when it
-has finished. If the `iterator` passes an error to its `callback`, the main
-`callback` (for the `each` function) is immediately called with the error.
-
-Note, that since this function applies `iterator` to each item in parallel,
-there is no guarantee that the iterator functions will complete in order.
-
-__Arguments__
-
-* `arr` - An array to iterate over.
-* `iterator(item, callback)` - A function to apply to each item in `arr`.
- The iterator is passed a `callback(err)` which must be called once it has
- completed. If no error has occurred, the `callback` should be run without
- arguments or with an explicit `null` argument. The array index is not passed
- to the iterator. If you need the index, use [`forEachOf`](#forEachOf).
-* `callback(err)` - *Optional* A callback which is called when all `iterator` functions
- have finished, or an error occurs.
-
-__Examples__
-
-
-```js
-// assuming openFiles is an array of file names and saveFile is a function
-// to save the modified contents of that file:
-
-async.each(openFiles, saveFile, function(err){
- // if any of the saves produced an error, err would equal that error
-});
-```
-
-```js
-// assuming openFiles is an array of file names
-
-async.each(openFiles, function(file, callback) {
-
- // Perform operation on file here.
- console.log('Processing file ' + file);
-
- if( file.length > 32 ) {
- console.log('This file name is too long');
- callback('File name too long');
- } else {
- // Do work to process file here
- console.log('File processed');
- callback();
- }
-}, function(err){
- // if any of the file processing produced an error, err would equal that error
- if( err ) {
- // One of the iterations produced an error.
- // All processing will now stop.
- console.log('A file failed to process');
- } else {
- console.log('All files have been processed successfully');
- }
-});
-```
-
-__Related__
-
-* eachSeries(arr, iterator, [callback])
-* eachLimit(arr, limit, iterator, [callback])
-
----------------------------------------
-
-
-
-
-### forEachOf(obj, iterator, [callback])
-
-Like `each`, except that it iterates over objects, and passes the key as the second argument to the iterator.
-
-__Arguments__
-
-* `obj` - An object or array to iterate over.
-* `iterator(item, key, callback)` - A function to apply to each item in `obj`.
-The `key` is the item's key, or index in the case of an array. The iterator is
-passed a `callback(err)` which must be called once it has completed. If no
-error has occurred, the callback should be run without arguments or with an
-explicit `null` argument.
-* `callback(err)` - *Optional* A callback which is called when all `iterator` functions have finished, or an error occurs.
-
-__Example__
-
-```js
-var obj = {dev: "/dev.json", test: "/test.json", prod: "/prod.json"};
-var configs = {};
-
-async.forEachOf(obj, function (value, key, callback) {
- fs.readFile(__dirname + value, "utf8", function (err, data) {
- if (err) return callback(err);
- try {
- configs[key] = JSON.parse(data);
- } catch (e) {
- return callback(e);
- }
- callback();
- })
-}, function (err) {
- if (err) console.error(err.message);
- // configs is now a map of JSON data
- doSomethingWith(configs);
-})
-```
-
-__Related__
-
-* forEachOfSeries(obj, iterator, [callback])
-* forEachOfLimit(obj, limit, iterator, [callback])
-
----------------------------------------
-
-
-### map(arr, iterator, [callback])
-
-Produces a new array of values by mapping each value in `arr` through
-the `iterator` function. The `iterator` is called with an item from `arr` and a
-callback for when it has finished processing. Each of these callback takes 2 arguments:
-an `error`, and the transformed item from `arr`. If `iterator` passes an error to its
-callback, the main `callback` (for the `map` function) is immediately called with the error.
-
-Note, that since this function applies the `iterator` to each item in parallel,
-there is no guarantee that the `iterator` functions will complete in order.
-However, the results array will be in the same order as the original `arr`.
-
-__Arguments__
-
-* `arr` - An array to iterate over.
-* `iterator(item, callback)` - A function to apply to each item in `arr`.
- The iterator is passed a `callback(err, transformed)` which must be called once
- it has completed with an error (which can be `null`) and a transformed item.
-* `callback(err, results)` - *Optional* A callback which is called when all `iterator`
- functions have finished, or an error occurs. Results is an array of the
- transformed items from the `arr`.
-
-__Example__
-
-```js
-async.map(['file1','file2','file3'], fs.stat, function(err, results){
- // results is now an array of stats for each file
-});
-```
-
-__Related__
-* mapSeries(arr, iterator, [callback])
-* mapLimit(arr, limit, iterator, [callback])
-
----------------------------------------
-
-
-
-### filter(arr, iterator, [callback])
-
-__Alias:__ `select`
-
-Returns a new array of all the values in `arr` which pass an async truth test.
-_The callback for each `iterator` call only accepts a single argument of `true` or
-`false`; it does not accept an error argument first!_ This is in-line with the
-way node libraries work with truth tests like `fs.exists`. This operation is
-performed in parallel, but the results array will be in the same order as the
-original.
-
-__Arguments__
-
-* `arr` - An array to iterate over.
-* `iterator(item, callback)` - A truth test to apply to each item in `arr`.
- The `iterator` is passed a `callback(truthValue)`, which must be called with a
- boolean argument once it has completed.
-* `callback(results)` - *Optional* A callback which is called after all the `iterator`
- functions have finished.
-
-__Example__
-
-```js
-async.filter(['file1','file2','file3'], fs.exists, function(results){
- // results now equals an array of the existing files
-});
-```
-
-__Related__
-
-* filterSeries(arr, iterator, [callback])
-* filterLimit(arr, limit, iterator, [callback])
-
----------------------------------------
-
-
-### reject(arr, iterator, [callback])
-
-The opposite of [`filter`](#filter). Removes values that pass an `async` truth test.
-
-__Related__
-
-* rejectSeries(arr, iterator, [callback])
-* rejectLimit(arr, limit, iterator, [callback])
-
----------------------------------------
-
-
-### reduce(arr, memo, iterator, [callback])
-
-__Aliases:__ `inject`, `foldl`
-
-Reduces `arr` into a single value using an async `iterator` to return
-each successive step. `memo` is the initial state of the reduction.
-This function only operates in series.
-
-For performance reasons, it may make sense to split a call to this function into
-a parallel map, and then use the normal `Array.prototype.reduce` on the results.
-This function is for situations where each step in the reduction needs to be async;
-if you can get the data before reducing it, then it's probably a good idea to do so.
-
-__Arguments__
-
-* `arr` - An array to iterate over.
-* `memo` - The initial state of the reduction.
-* `iterator(memo, item, callback)` - A function applied to each item in the
- array to produce the next step in the reduction. The `iterator` is passed a
- `callback(err, reduction)` which accepts an optional error as its first
- argument, and the state of the reduction as the second. If an error is
- passed to the callback, the reduction is stopped and the main `callback` is
- immediately called with the error.
-* `callback(err, result)` - *Optional* A callback which is called after all the `iterator`
- functions have finished. Result is the reduced value.
-
-__Example__
-
-```js
-async.reduce([1,2,3], 0, function(memo, item, callback){
- // pointless async:
- process.nextTick(function(){
- callback(null, memo + item)
- });
-}, function(err, result){
- // result is now equal to the last value of memo, which is 6
-});
-```
-
----------------------------------------
-
-
-### reduceRight(arr, memo, iterator, [callback])
-
-__Alias:__ `foldr`
-
-Same as [`reduce`](#reduce), only operates on `arr` in reverse order.
-
-
----------------------------------------
-
-
-### detect(arr, iterator, [callback])
-
-Returns the first value in `arr` that passes an async truth test. The
-`iterator` is applied in parallel, meaning the first iterator to return `true` will
-fire the detect `callback` with that result. That means the result might not be
-the first item in the original `arr` (in terms of order) that passes the test.
-
-If order within the original `arr` is important, then look at [`detectSeries`](#detectSeries).
-
-__Arguments__
-
-* `arr` - An array to iterate over.
-* `iterator(item, callback)` - A truth test to apply to each item in `arr`.
- The iterator is passed a `callback(truthValue)` which must be called with a
- boolean argument once it has completed. **Note: this callback does not take an error as its first argument.**
-* `callback(result)` - *Optional* A callback which is called as soon as any iterator returns
- `true`, or after all the `iterator` functions have finished. Result will be
- the first item in the array that passes the truth test (iterator) or the
- value `undefined` if none passed. **Note: this callback does not take an error as its first argument.**
-
-__Example__
-
-```js
-async.detect(['file1','file2','file3'], fs.exists, function(result){
- // result now equals the first file in the list that exists
-});
-```
-
-__Related__
-
-* detectSeries(arr, iterator, [callback])
-* detectLimit(arr, limit, iterator, [callback])
-
----------------------------------------
-
-
-### sortBy(arr, iterator, [callback])
-
-Sorts a list by the results of running each `arr` value through an async `iterator`.
-
-__Arguments__
-
-* `arr` - An array to iterate over.
-* `iterator(item, callback)` - A function to apply to each item in `arr`.
- The iterator is passed a `callback(err, sortValue)` which must be called once it
- has completed with an error (which can be `null`) and a value to use as the sort
- criteria.
-* `callback(err, results)` - *Optional* A callback which is called after all the `iterator`
- functions have finished, or an error occurs. Results is the items from
- the original `arr` sorted by the values returned by the `iterator` calls.
-
-__Example__
-
-```js
-async.sortBy(['file1','file2','file3'], function(file, callback){
- fs.stat(file, function(err, stats){
- callback(err, stats.mtime);
- });
-}, function(err, results){
- // results is now the original array of files sorted by
- // modified date
-});
-```
-
-__Sort Order__
-
-By modifying the callback parameter the sorting order can be influenced:
-
-```js
-//ascending order
-async.sortBy([1,9,3,5], function(x, callback){
- callback(null, x);
-}, function(err,result){
- //result callback
-} );
-
-//descending order
-async.sortBy([1,9,3,5], function(x, callback){
- callback(null, x*-1); //<- x*-1 instead of x, turns the order around
-}, function(err,result){
- //result callback
-} );
-```
-
----------------------------------------
-
-
-### some(arr, iterator, [callback])
-
-__Alias:__ `any`
-
-Returns `true` if at least one element in the `arr` satisfies an async test.
-_The callback for each iterator call only accepts a single argument of `true` or
-`false`; it does not accept an error argument first!_ This is in-line with the
-way node libraries work with truth tests like `fs.exists`. Once any iterator
-call returns `true`, the main `callback` is immediately called.
-
-__Arguments__
-
-* `arr` - An array to iterate over.
-* `iterator(item, callback)` - A truth test to apply to each item in the array
- in parallel. The iterator is passed a `callback(truthValue)`` which must be
- called with a boolean argument once it has completed.
-* `callback(result)` - *Optional* A callback which is called as soon as any iterator returns
- `true`, or after all the iterator functions have finished. Result will be
- either `true` or `false` depending on the values of the async tests.
-
- **Note: the callbacks do not take an error as their first argument.**
-__Example__
-
-```js
-async.some(['file1','file2','file3'], fs.exists, function(result){
- // if result is true then at least one of the files exists
-});
-```
-
-__Related__
-
-* someLimit(arr, limit, iterator, callback)
-
----------------------------------------
-
-
-### every(arr, iterator, [callback])
-
-__Alias:__ `all`
-
-Returns `true` if every element in `arr` satisfies an async test.
-_The callback for each `iterator` call only accepts a single argument of `true` or
-`false`; it does not accept an error argument first!_ This is in-line with the
-way node libraries work with truth tests like `fs.exists`.
-
-__Arguments__
-
-* `arr` - An array to iterate over.
-* `iterator(item, callback)` - A truth test to apply to each item in the array
- in parallel. The iterator is passed a `callback(truthValue)` which must be
- called with a boolean argument once it has completed.
-* `callback(result)` - *Optional* A callback which is called as soon as any iterator returns
- `false`, or after all the iterator functions have finished. Result will be
- either `true` or `false` depending on the values of the async tests.
-
- **Note: the callbacks do not take an error as their first argument.**
-
-__Example__
-
-```js
-async.every(['file1','file2','file3'], fs.exists, function(result){
- // if result is true then every file exists
-});
-```
-
-__Related__
-
-* everyLimit(arr, limit, iterator, callback)
-
----------------------------------------
-
-
-### concat(arr, iterator, [callback])
-
-Applies `iterator` to each item in `arr`, concatenating the results. Returns the
-concatenated list. The `iterator`s are called in parallel, and the results are
-concatenated as they return. There is no guarantee that the results array will
-be returned in the original order of `arr` passed to the `iterator` function.
-
-__Arguments__
-
-* `arr` - An array to iterate over.
-* `iterator(item, callback)` - A function to apply to each item in `arr`.
- The iterator is passed a `callback(err, results)` which must be called once it
- has completed with an error (which can be `null`) and an array of results.
-* `callback(err, results)` - *Optional* A callback which is called after all the `iterator`
- functions have finished, or an error occurs. Results is an array containing
- the concatenated results of the `iterator` function.
-
-__Example__
-
-```js
-async.concat(['dir1','dir2','dir3'], fs.readdir, function(err, files){
- // files is now a list of filenames that exist in the 3 directories
-});
-```
-
-__Related__
-
-* concatSeries(arr, iterator, [callback])
-
-
-## Control Flow
-
-
-### series(tasks, [callback])
-
-Run the functions in the `tasks` array in series, each one running once the previous
-function has completed. If any functions in the series pass an error to its
-callback, no more functions are run, and `callback` is immediately called with the value of the error.
-Otherwise, `callback` receives an array of results when `tasks` have completed.
-
-It is also possible to use an object instead of an array. Each property will be
-run as a function, and the results will be passed to the final `callback` as an object
-instead of an array. This can be a more readable way of handling results from
-[`series`](#series).
-
-**Note** that while many implementations preserve the order of object properties, the
-[ECMAScript Language Specification](http://www.ecma-international.org/ecma-262/5.1/#sec-8.6)
-explicitly states that
-
-> The mechanics and order of enumerating the properties is not specified.
-
-So if you rely on the order in which your series of functions are executed, and want
-this to work on all platforms, consider using an array.
-
-__Arguments__
-
-* `tasks` - An array or object containing functions to run, each function is passed
- a `callback(err, result)` it must call on completion with an error `err` (which can
- be `null`) and an optional `result` value.
-* `callback(err, results)` - An optional callback to run once all the functions
- have completed. This function gets a results array (or object) containing all
- the result arguments passed to the `task` callbacks.
-
-__Example__
-
-```js
-async.series([
- function(callback){
- // do some stuff ...
- callback(null, 'one');
- },
- function(callback){
- // do some more stuff ...
- callback(null, 'two');
- }
-],
-// optional callback
-function(err, results){
- // results is now equal to ['one', 'two']
-});
-
-
-// an example using an object instead of an array
-async.series({
- one: function(callback){
- setTimeout(function(){
- callback(null, 1);
- }, 200);
- },
- two: function(callback){
- setTimeout(function(){
- callback(null, 2);
- }, 100);
- }
-},
-function(err, results) {
- // results is now equal to: {one: 1, two: 2}
-});
-```
-
----------------------------------------
-
-
-### parallel(tasks, [callback])
-
-Run the `tasks` array of functions in parallel, without waiting until the previous
-function has completed. If any of the functions pass an error to its
-callback, the main `callback` is immediately called with the value of the error.
-Once the `tasks` have completed, the results are passed to the final `callback` as an
-array.
-
-**Note:** `parallel` is about kicking-off I/O tasks in parallel, not about parallel execution of code. If your tasks do not use any timers or perform any I/O, they will actually be executed in series. Any synchronous setup sections for each task will happen one after the other. JavaScript remains single-threaded.
-
-It is also possible to use an object instead of an array. Each property will be
-run as a function and the results will be passed to the final `callback` as an object
-instead of an array. This can be a more readable way of handling results from
-[`parallel`](#parallel).
-
-
-__Arguments__
-
-* `tasks` - An array or object containing functions to run. Each function is passed
- a `callback(err, result)` which it must call on completion with an error `err`
- (which can be `null`) and an optional `result` value.
-* `callback(err, results)` - An optional callback to run once all the functions
- have completed successfully. This function gets a results array (or object) containing all
- the result arguments passed to the task callbacks.
-
-__Example__
-
-```js
-async.parallel([
- function(callback){
- setTimeout(function(){
- callback(null, 'one');
- }, 200);
- },
- function(callback){
- setTimeout(function(){
- callback(null, 'two');
- }, 100);
- }
-],
-// optional callback
-function(err, results){
- // the results array will equal ['one','two'] even though
- // the second function had a shorter timeout.
-});
-
-
-// an example using an object instead of an array
-async.parallel({
- one: function(callback){
- setTimeout(function(){
- callback(null, 1);
- }, 200);
- },
- two: function(callback){
- setTimeout(function(){
- callback(null, 2);
- }, 100);
- }
-},
-function(err, results) {
- // results is now equals to: {one: 1, two: 2}
-});
-```
-
-__Related__
-
-* parallelLimit(tasks, limit, [callback])
-
----------------------------------------
-
-
-### whilst(test, fn, callback)
-
-Repeatedly call `fn`, while `test` returns `true`. Calls `callback` when stopped,
-or an error occurs.
-
-__Arguments__
-
-* `test()` - synchronous truth test to perform before each execution of `fn`.
-* `fn(callback)` - A function which is called each time `test` passes. The function is
- passed a `callback(err)`, which must be called once it has completed with an
- optional `err` argument.
-* `callback(err, [results])` - A callback which is called after the test
- function has failed and repeated execution of `fn` has stopped. `callback`
- will be passed an error and any arguments passed to the final `fn`'s callback.
-
-__Example__
-
-```js
-var count = 0;
-
-async.whilst(
- function () { return count < 5; },
- function (callback) {
- count++;
- setTimeout(function () {
- callback(null, count);
- }, 1000);
- },
- function (err, n) {
- // 5 seconds have passed, n = 5
- }
-);
-```
-
----------------------------------------
-
-
-### doWhilst(fn, test, callback)
-
-The post-check version of [`whilst`](#whilst). To reflect the difference in
-the order of operations, the arguments `test` and `fn` are switched.
-
-`doWhilst` is to `whilst` as `do while` is to `while` in plain JavaScript.
-
----------------------------------------
-
-
-### until(test, fn, callback)
-
-Repeatedly call `fn` until `test` returns `true`. Calls `callback` when stopped,
-or an error occurs. `callback` will be passed an error and any arguments passed
-to the final `fn`'s callback.
-
-The inverse of [`whilst`](#whilst).
-
----------------------------------------
-
-
-### doUntil(fn, test, callback)
-
-Like [`doWhilst`](#doWhilst), except the `test` is inverted. Note the argument ordering differs from `until`.
-
----------------------------------------
-
-
-### during(test, fn, callback)
-
-Like [`whilst`](#whilst), except the `test` is an asynchronous function that is passed a callback in the form of `function (err, truth)`. If error is passed to `test` or `fn`, the main callback is immediately called with the value of the error.
-
-__Example__
-
-```js
-var count = 0;
-
-async.during(
- function (callback) {
- return callback(null, count < 5);
- },
- function (callback) {
- count++;
- setTimeout(callback, 1000);
- },
- function (err) {
- // 5 seconds have passed
- }
-);
-```
-
----------------------------------------
-
-
-### doDuring(fn, test, callback)
-
-The post-check version of [`during`](#during). To reflect the difference in
-the order of operations, the arguments `test` and `fn` are switched.
-
-Also a version of [`doWhilst`](#doWhilst) with asynchronous `test` function.
-
----------------------------------------
-
-
-### forever(fn, [errback])
-
-Calls the asynchronous function `fn` with a callback parameter that allows it to
-call itself again, in series, indefinitely.
-
-If an error is passed to the callback then `errback` is called with the
-error, and execution stops, otherwise it will never be called.
-
-```js
-async.forever(
- function(next) {
- // next is suitable for passing to things that need a callback(err [, whatever]);
- // it will result in this function being called again.
- },
- function(err) {
- // if next is called with a value in its first parameter, it will appear
- // in here as 'err', and execution will stop.
- }
-);
-```
-
----------------------------------------
-
-
-### waterfall(tasks, [callback])
-
-Runs the `tasks` array of functions in series, each passing their results to the next in
-the array. However, if any of the `tasks` pass an error to their own callback, the
-next function is not executed, and the main `callback` is immediately called with
-the error.
-
-__Arguments__
-
-* `tasks` - An array of functions to run, each function is passed a
- `callback(err, result1, result2, ...)` it must call on completion. The first
- argument is an error (which can be `null`) and any further arguments will be
- passed as arguments in order to the next task.
-* `callback(err, [results])` - An optional callback to run once all the functions
- have completed. This will be passed the results of the last task's callback.
-
-
-
-__Example__
-
-```js
-async.waterfall([
- function(callback) {
- callback(null, 'one', 'two');
- },
- function(arg1, arg2, callback) {
- // arg1 now equals 'one' and arg2 now equals 'two'
- callback(null, 'three');
- },
- function(arg1, callback) {
- // arg1 now equals 'three'
- callback(null, 'done');
- }
-], function (err, result) {
- // result now equals 'done'
-});
-```
-Or, with named functions:
-
-```js
-async.waterfall([
- myFirstFunction,
- mySecondFunction,
- myLastFunction,
-], function (err, result) {
- // result now equals 'done'
-});
-function myFirstFunction(callback) {
- callback(null, 'one', 'two');
-}
-function mySecondFunction(arg1, arg2, callback) {
- // arg1 now equals 'one' and arg2 now equals 'two'
- callback(null, 'three');
-}
-function myLastFunction(arg1, callback) {
- // arg1 now equals 'three'
- callback(null, 'done');
-}
-```
-
-Or, if you need to pass any argument to the first function:
-
-```js
-async.waterfall([
- async.apply(myFirstFunction, 'zero'),
- mySecondFunction,
- myLastFunction,
-], function (err, result) {
- // result now equals 'done'
-});
-function myFirstFunction(arg1, callback) {
- // arg1 now equals 'zero'
- callback(null, 'one', 'two');
-}
-function mySecondFunction(arg1, arg2, callback) {
- // arg1 now equals 'one' and arg2 now equals 'two'
- callback(null, 'three');
-}
-function myLastFunction(arg1, callback) {
- // arg1 now equals 'three'
- callback(null, 'done');
-}
-```
-
----------------------------------------
-
-### compose(fn1, fn2...)
-
-Creates a function which is a composition of the passed asynchronous
-functions. Each function consumes the return value of the function that
-follows. Composing functions `f()`, `g()`, and `h()` would produce the result of
-`f(g(h()))`, only this version uses callbacks to obtain the return values.
-
-Each function is executed with the `this` binding of the composed function.
-
-__Arguments__
-
-* `functions...` - the asynchronous functions to compose
-
-
-__Example__
-
-```js
-function add1(n, callback) {
- setTimeout(function () {
- callback(null, n + 1);
- }, 10);
-}
-
-function mul3(n, callback) {
- setTimeout(function () {
- callback(null, n * 3);
- }, 10);
-}
-
-var add1mul3 = async.compose(mul3, add1);
-
-add1mul3(4, function (err, result) {
- // result now equals 15
-});
-```
-
----------------------------------------
-
-### seq(fn1, fn2...)
-
-Version of the compose function that is more natural to read.
-Each function consumes the return value of the previous function.
-It is the equivalent of [`compose`](#compose) with the arguments reversed.
-
-Each function is executed with the `this` binding of the composed function.
-
-__Arguments__
-
-* `functions...` - the asynchronous functions to compose
-
-
-__Example__
-
-```js
-// Requires lodash (or underscore), express3 and dresende's orm2.
-// Part of an app, that fetches cats of the logged user.
-// This example uses `seq` function to avoid overnesting and error
-// handling clutter.
-app.get('/cats', function(request, response) {
- var User = request.models.User;
- async.seq(
- _.bind(User.get, User), // 'User.get' has signature (id, callback(err, data))
- function(user, fn) {
- user.getCats(fn); // 'getCats' has signature (callback(err, data))
- }
- )(req.session.user_id, function (err, cats) {
- if (err) {
- console.error(err);
- response.json({ status: 'error', message: err.message });
- } else {
- response.json({ status: 'ok', message: 'Cats found', data: cats });
- }
- });
-});
-```
-
----------------------------------------
-
-### applyEach(fns, args..., callback)
-
-Applies the provided arguments to each function in the array, calling
-`callback` after all functions have completed. If you only provide the first
-argument, then it will return a function which lets you pass in the
-arguments as if it were a single function call.
-
-__Arguments__
-
-* `fns` - the asynchronous functions to all call with the same arguments
-* `args...` - any number of separate arguments to pass to the function
-* `callback` - the final argument should be the callback, called when all
- functions have completed processing
-
-
-__Example__
-
-```js
-async.applyEach([enableSearch, updateSchema], 'bucket', callback);
-
-// partial application example:
-async.each(
- buckets,
- async.applyEach([enableSearch, updateSchema]),
- callback
-);
-```
-
-__Related__
-
-* applyEachSeries(tasks, args..., [callback])
-
----------------------------------------
-
-
-### queue(worker, [concurrency])
-
-Creates a `queue` object with the specified `concurrency`. Tasks added to the
-`queue` are processed in parallel (up to the `concurrency` limit). If all
-`worker`s are in progress, the task is queued until one becomes available.
-Once a `worker` completes a `task`, that `task`'s callback is called.
-
-__Arguments__
-
-* `worker(task, callback)` - An asynchronous function for processing a queued
- task, which must call its `callback(err)` argument when finished, with an
- optional `error` as an argument. If you want to handle errors from an individual task, pass a callback to `q.push()`.
-* `concurrency` - An `integer` for determining how many `worker` functions should be
- run in parallel. If omitted, the concurrency defaults to `1`. If the concurrency is `0`, an error is thrown.
-
-__Queue objects__
-
-The `queue` object returned by this function has the following properties and
-methods:
-
-* `length()` - a function returning the number of items waiting to be processed.
-* `started` - a function returning whether or not any items have been pushed and processed by the queue
-* `running()` - a function returning the number of items currently being processed.
-* `workersList()` - a function returning the array of items currently being processed.
-* `idle()` - a function returning false if there are items waiting or being processed, or true if not.
-* `concurrency` - an integer for determining how many `worker` functions should be
- run in parallel. This property can be changed after a `queue` is created to
- alter the concurrency on-the-fly.
-* `push(task, [callback])` - add a new task to the `queue`. Calls `callback` once
- the `worker` has finished processing the task. Instead of a single task, a `tasks` array
- can be submitted. The respective callback is used for every task in the list.
-* `unshift(task, [callback])` - add a new task to the front of the `queue`.
-* `saturated` - a callback that is called when the `queue` length hits the `concurrency` limit,
- and further tasks will be queued.
-* `empty` - a callback that is called when the last item from the `queue` is given to a `worker`.
-* `drain` - a callback that is called when the last item from the `queue` has returned from the `worker`.
-* `paused` - a boolean for determining whether the queue is in a paused state
-* `pause()` - a function that pauses the processing of tasks until `resume()` is called.
-* `resume()` - a function that resumes the processing of queued tasks when the queue is paused.
-* `kill()` - a function that removes the `drain` callback and empties remaining tasks from the queue forcing it to go idle.
-
-__Example__
-
-```js
-// create a queue object with concurrency 2
-
-var q = async.queue(function (task, callback) {
- console.log('hello ' + task.name);
- callback();
-}, 2);
-
-
-// assign a callback
-q.drain = function() {
- console.log('all items have been processed');
-}
-
-// add some items to the queue
-
-q.push({name: 'foo'}, function (err) {
- console.log('finished processing foo');
-});
-q.push({name: 'bar'}, function (err) {
- console.log('finished processing bar');
-});
-
-// add some items to the queue (batch-wise)
-
-q.push([{name: 'baz'},{name: 'bay'},{name: 'bax'}], function (err) {
- console.log('finished processing item');
-});
-
-// add some items to the front of the queue
-
-q.unshift({name: 'bar'}, function (err) {
- console.log('finished processing bar');
-});
-```
-
-
----------------------------------------
-
-
-### priorityQueue(worker, concurrency)
-
-The same as [`queue`](#queue) only tasks are assigned a priority and completed in ascending priority order. There are two differences between `queue` and `priorityQueue` objects:
-
-* `push(task, priority, [callback])` - `priority` should be a number. If an array of
- `tasks` is given, all tasks will be assigned the same priority.
-* The `unshift` method was removed.
-
----------------------------------------
-
-
-### cargo(worker, [payload])
-
-Creates a `cargo` object with the specified payload. Tasks added to the
-cargo will be processed altogether (up to the `payload` limit). If the
-`worker` is in progress, the task is queued until it becomes available. Once
-the `worker` has completed some tasks, each callback of those tasks is called.
-Check out [these](https://camo.githubusercontent.com/6bbd36f4cf5b35a0f11a96dcd2e97711ffc2fb37/68747470733a2f2f662e636c6f75642e6769746875622e636f6d2f6173736574732f313637363837312f36383130382f62626330636662302d356632392d313165322d393734662d3333393763363464633835382e676966) [animations](https://camo.githubusercontent.com/f4810e00e1c5f5f8addbe3e9f49064fd5d102699/68747470733a2f2f662e636c6f75642e6769746875622e636f6d2f6173736574732f313637363837312f36383130312f38346339323036362d356632392d313165322d383134662d3964336430323431336266642e676966) for how `cargo` and `queue` work.
-
-While [queue](#queue) passes only one task to one of a group of workers
-at a time, cargo passes an array of tasks to a single worker, repeating
-when the worker is finished.
-
-__Arguments__
-
-* `worker(tasks, callback)` - An asynchronous function for processing an array of
- queued tasks, which must call its `callback(err)` argument when finished, with
- an optional `err` argument.
-* `payload` - An optional `integer` for determining how many tasks should be
- processed per round; if omitted, the default is unlimited.
-
-__Cargo objects__
-
-The `cargo` object returned by this function has the following properties and
-methods:
-
-* `length()` - A function returning the number of items waiting to be processed.
-* `payload` - An `integer` for determining how many tasks should be
- process per round. This property can be changed after a `cargo` is created to
- alter the payload on-the-fly.
-* `push(task, [callback])` - Adds `task` to the `queue`. The callback is called
- once the `worker` has finished processing the task. Instead of a single task, an array of `tasks`
- can be submitted. The respective callback is used for every task in the list.
-* `saturated` - A callback that is called when the `queue.length()` hits the concurrency and further tasks will be queued.
-* `empty` - A callback that is called when the last item from the `queue` is given to a `worker`.
-* `drain` - A callback that is called when the last item from the `queue` has returned from the `worker`.
-* `idle()`, `pause()`, `resume()`, `kill()` - cargo inherits all of the same methods and event calbacks as [`queue`](#queue)
-
-__Example__
-
-```js
-// create a cargo object with payload 2
-
-var cargo = async.cargo(function (tasks, callback) {
- for(var i=0; i
-### auto(tasks, [concurrency], [callback])
-
-Determines the best order for running the functions in `tasks`, based on their requirements. Each function can optionally depend on other functions being completed first, and each function is run as soon as its requirements are satisfied.
-
-If any of the functions pass an error to their callback, the `auto` sequence will stop. Further tasks will not execute (so any other functions depending on it will not run), and the main `callback` is immediately called with the error. Functions also receive an object containing the results of functions which have completed so far.
-
-Note, all functions are called with a `results` object as a second argument,
-so it is unsafe to pass functions in the `tasks` object which cannot handle the
-extra argument.
-
-For example, this snippet of code:
-
-```js
-async.auto({
- readData: async.apply(fs.readFile, 'data.txt', 'utf-8')
-}, callback);
-```
-
-will have the effect of calling `readFile` with the results object as the last
-argument, which will fail:
-
-```js
-fs.readFile('data.txt', 'utf-8', cb, {});
-```
-
-Instead, wrap the call to `readFile` in a function which does not forward the
-`results` object:
-
-```js
-async.auto({
- readData: function(cb, results){
- fs.readFile('data.txt', 'utf-8', cb);
- }
-}, callback);
-```
-
-__Arguments__
-
-* `tasks` - An object. Each of its properties is either a function or an array of
- requirements, with the function itself the last item in the array. The object's key
- of a property serves as the name of the task defined by that property,
- i.e. can be used when specifying requirements for other tasks.
- The function receives two arguments: (1) a `callback(err, result)` which must be
- called when finished, passing an `error` (which can be `null`) and the result of
- the function's execution, and (2) a `results` object, containing the results of
- the previously executed functions.
-* `concurrency` - An optional `integer` for determining the maximum number of tasks that can be run in parallel. By default, as many as possible.
-* `callback(err, results)` - An optional callback which is called when all the
- tasks have been completed. It receives the `err` argument if any `tasks`
- pass an error to their callback. Results are always returned; however, if
- an error occurs, no further `tasks` will be performed, and the results
- object will only contain partial results.
-
-
-__Example__
-
-```js
-async.auto({
- get_data: function(callback){
- console.log('in get_data');
- // async code to get some data
- callback(null, 'data', 'converted to array');
- },
- make_folder: function(callback){
- console.log('in make_folder');
- // async code to create a directory to store a file in
- // this is run at the same time as getting the data
- callback(null, 'folder');
- },
- write_file: ['get_data', 'make_folder', function(callback, results){
- console.log('in write_file', JSON.stringify(results));
- // once there is some data and the directory exists,
- // write the data to a file in the directory
- callback(null, 'filename');
- }],
- email_link: ['write_file', function(callback, results){
- console.log('in email_link', JSON.stringify(results));
- // once the file is written let's email a link to it...
- // results.write_file contains the filename returned by write_file.
- callback(null, {'file':results.write_file, 'email':'user@example.com'});
- }]
-}, function(err, results) {
- console.log('err = ', err);
- console.log('results = ', results);
-});
-```
-
-This is a fairly trivial example, but to do this using the basic parallel and
-series functions would look like this:
-
-```js
-async.parallel([
- function(callback){
- console.log('in get_data');
- // async code to get some data
- callback(null, 'data', 'converted to array');
- },
- function(callback){
- console.log('in make_folder');
- // async code to create a directory to store a file in
- // this is run at the same time as getting the data
- callback(null, 'folder');
- }
-],
-function(err, results){
- async.series([
- function(callback){
- console.log('in write_file', JSON.stringify(results));
- // once there is some data and the directory exists,
- // write the data to a file in the directory
- results.push('filename');
- callback(null);
- },
- function(callback){
- console.log('in email_link', JSON.stringify(results));
- // once the file is written let's email a link to it...
- callback(null, {'file':results.pop(), 'email':'user@example.com'});
- }
- ]);
-});
-```
-
-For a complicated series of `async` tasks, using the [`auto`](#auto) function makes adding
-new tasks much easier (and the code more readable).
-
-
----------------------------------------
-
-
-### retry([opts = {times: 5, interval: 0}| 5], task, [callback])
-
-Attempts to get a successful response from `task` no more than `times` times before
-returning an error. If the task is successful, the `callback` will be passed the result
-of the successful task. If all attempts fail, the callback will be passed the error and
-result (if any) of the final attempt.
-
-__Arguments__
-
-* `opts` - Can be either an object with `times` and `interval` or a number.
- * `times` - The number of attempts to make before giving up. The default is `5`.
- * `interval` - The time to wait between retries, in milliseconds. The default is `0`.
- * If `opts` is a number, the number specifies the number of times to retry, with the default interval of `0`.
-* `task(callback, results)` - A function which receives two arguments: (1) a `callback(err, result)`
- which must be called when finished, passing `err` (which can be `null`) and the `result` of
- the function's execution, and (2) a `results` object, containing the results of
- the previously executed functions (if nested inside another control flow).
-* `callback(err, results)` - An optional callback which is called when the
- task has succeeded, or after the final failed attempt. It receives the `err` and `result` arguments of the last attempt at completing the `task`.
-
-The [`retry`](#retry) function can be used as a stand-alone control flow by passing a callback, as shown below:
-
-```js
-// try calling apiMethod 3 times
-async.retry(3, apiMethod, function(err, result) {
- // do something with the result
-});
-```
-
-```js
-// try calling apiMethod 3 times, waiting 200 ms between each retry
-async.retry({times: 3, interval: 200}, apiMethod, function(err, result) {
- // do something with the result
-});
-```
-
-```js
-// try calling apiMethod the default 5 times no delay between each retry
-async.retry(apiMethod, function(err, result) {
- // do something with the result
-});
-```
-
-It can also be embedded within other control flow functions to retry individual methods
-that are not as reliable, like this:
-
-```js
-async.auto({
- users: api.getUsers.bind(api),
- payments: async.retry(3, api.getPayments.bind(api))
-}, function(err, results) {
- // do something with the results
-});
-```
-
-
----------------------------------------
-
-
-### iterator(tasks)
-
-Creates an iterator function which calls the next function in the `tasks` array,
-returning a continuation to call the next one after that. It's also possible to
-“peek” at the next iterator with `iterator.next()`.
-
-This function is used internally by the `async` module, but can be useful when
-you want to manually control the flow of functions in series.
-
-__Arguments__
-
-* `tasks` - An array of functions to run.
-
-__Example__
-
-```js
-var iterator = async.iterator([
- function(){ sys.p('one'); },
- function(){ sys.p('two'); },
- function(){ sys.p('three'); }
-]);
-
-node> var iterator2 = iterator();
-'one'
-node> var iterator3 = iterator2();
-'two'
-node> iterator3();
-'three'
-node> var nextfn = iterator2.next();
-node> nextfn();
-'three'
-```
-
----------------------------------------
-
-
-### apply(function, arguments..)
-
-Creates a continuation function with some arguments already applied.
-
-Useful as a shorthand when combined with other control flow functions. Any arguments
-passed to the returned function are added to the arguments originally passed
-to apply.
-
-__Arguments__
-
-* `function` - The function you want to eventually apply all arguments to.
-* `arguments...` - Any number of arguments to automatically apply when the
- continuation is called.
-
-__Example__
-
-```js
-// using apply
-
-async.parallel([
- async.apply(fs.writeFile, 'testfile1', 'test1'),
- async.apply(fs.writeFile, 'testfile2', 'test2'),
-]);
-
-
-// the same process without using apply
-
-async.parallel([
- function(callback){
- fs.writeFile('testfile1', 'test1', callback);
- },
- function(callback){
- fs.writeFile('testfile2', 'test2', callback);
- }
-]);
-```
-
-It's possible to pass any number of additional arguments when calling the
-continuation:
-
-```js
-node> var fn = async.apply(sys.puts, 'one');
-node> fn('two', 'three');
-one
-two
-three
-```
-
----------------------------------------
-
-
-### nextTick(callback), setImmediate(callback)
-
-Calls `callback` on a later loop around the event loop. In Node.js this just
-calls `process.nextTick`; in the browser it falls back to `setImmediate(callback)`
-if available, otherwise `setTimeout(callback, 0)`, which means other higher priority
-events may precede the execution of `callback`.
-
-This is used internally for browser-compatibility purposes.
-
-__Arguments__
-
-* `callback` - The function to call on a later loop around the event loop.
-
-__Example__
-
-```js
-var call_order = [];
-async.nextTick(function(){
- call_order.push('two');
- // call_order now equals ['one','two']
-});
-call_order.push('one')
-```
-
-
-### times(n, iterator, [callback])
-
-Calls the `iterator` function `n` times, and accumulates results in the same manner
-you would use with [`map`](#map).
-
-__Arguments__
-
-* `n` - The number of times to run the function.
-* `iterator` - The function to call `n` times.
-* `callback` - see [`map`](#map)
-
-__Example__
-
-```js
-// Pretend this is some complicated async factory
-var createUser = function(id, callback) {
- callback(null, {
- id: 'user' + id
- })
-}
-// generate 5 users
-async.times(5, function(n, next){
- createUser(n, function(err, user) {
- next(err, user)
- })
-}, function(err, users) {
- // we should now have 5 users
-});
-```
-
-__Related__
-
-* timesSeries(n, iterator, [callback])
-* timesLimit(n, limit, iterator, [callback])
-
-
-## Utils
-
-
-### memoize(fn, [hasher])
-
-Caches the results of an `async` function. When creating a hash to store function
-results against, the callback is omitted from the hash and an optional hash
-function can be used.
-
-If no hash function is specified, the first argument is used as a hash key, which may work reasonably if it is a string or a data type that converts to a distinct string. Note that objects and arrays will not behave reasonably. Neither will cases where the other arguments are significant. In such cases, specify your own hash function.
-
-The cache of results is exposed as the `memo` property of the function returned
-by `memoize`.
-
-__Arguments__
-
-* `fn` - The function to proxy and cache results from.
-* `hasher` - An optional function for generating a custom hash for storing
- results. It has all the arguments applied to it apart from the callback, and
- must be synchronous.
-
-__Example__
-
-```js
-var slow_fn = function (name, callback) {
- // do something
- callback(null, result);
-};
-var fn = async.memoize(slow_fn);
-
-// fn can now be used as if it were slow_fn
-fn('some name', function () {
- // callback
-});
-```
-
-
-### unmemoize(fn)
-
-Undoes a [`memoize`](#memoize)d function, reverting it to the original, unmemoized
-form. Handy for testing.
-
-__Arguments__
-
-* `fn` - the memoized function
-
----------------------------------------
-
-
-### ensureAsync(fn)
-
-Wrap an async function and ensure it calls its callback on a later tick of the event loop. If the function already calls its callback on a next tick, no extra deferral is added. This is useful for preventing stack overflows (`RangeError: Maximum call stack size exceeded`) and generally keeping [Zalgo](http://blog.izs.me/post/59142742143/designing-apis-for-asynchrony) contained.
-
-__Arguments__
-
-* `fn` - an async function, one that expects a node-style callback as its last argument
-
-Returns a wrapped function with the exact same call signature as the function passed in.
-
-__Example__
-
-```js
-function sometimesAsync(arg, callback) {
- if (cache[arg]) {
- return callback(null, cache[arg]); // this would be synchronous!!
- } else {
- doSomeIO(arg, callback); // this IO would be asynchronous
- }
-}
-
-// this has a risk of stack overflows if many results are cached in a row
-async.mapSeries(args, sometimesAsync, done);
-
-// this will defer sometimesAsync's callback if necessary,
-// preventing stack overflows
-async.mapSeries(args, async.ensureAsync(sometimesAsync), done);
-
-```
-
----------------------------------------
-
-
-### constant(values...)
-
-Returns a function that when called, calls-back with the values provided. Useful as the first function in a `waterfall`, or for plugging values in to `auto`.
-
-__Example__
-
-```js
-async.waterfall([
- async.constant(42),
- function (value, next) {
- // value === 42
- },
- //...
-], callback);
-
-async.waterfall([
- async.constant(filename, "utf8"),
- fs.readFile,
- function (fileData, next) {
- //...
- }
- //...
-], callback);
-
-async.auto({
- hostname: async.constant("https://server.net/"),
- port: findFreePort,
- launchServer: ["hostname", "port", function (cb, options) {
- startServer(options, cb);
- }],
- //...
-}, callback);
-
-```
-
----------------------------------------
-
-
-
-### asyncify(func)
-
-__Alias:__ `wrapSync`
-
-Take a sync function and make it async, passing its return value to a callback. This is useful for plugging sync functions into a waterfall, series, or other async functions. Any arguments passed to the generated function will be passed to the wrapped function (except for the final callback argument). Errors thrown will be passed to the callback.
-
-__Example__
-
-```js
-async.waterfall([
- async.apply(fs.readFile, filename, "utf8"),
- async.asyncify(JSON.parse),
- function (data, next) {
- // data is the result of parsing the text.
- // If there was a parsing error, it would have been caught.
- }
-], callback)
-```
-
-If the function passed to `asyncify` returns a Promise, that promises's resolved/rejected state will be used to call the callback, rather than simply the synchronous return value. Example:
-
-```js
-async.waterfall([
- async.apply(fs.readFile, filename, "utf8"),
- async.asyncify(function (contents) {
- return db.model.create(contents);
- }),
- function (model, next) {
- // `model` is the instantiated model object.
- // If there was an error, this function would be skipped.
- }
-], callback)
-```
-
-This also means you can asyncify ES2016 `async` functions.
-
-```js
-var q = async.queue(async.asyncify(async function (file) {
- var intermediateStep = await processFile(file);
- return await somePromise(intermediateStep)
-}));
-
-q.push(files);
-```
-
----------------------------------------
-
-
-### log(function, arguments)
-
-Logs the result of an `async` function to the `console`. Only works in Node.js or
-in browsers that support `console.log` and `console.error` (such as FF and Chrome).
-If multiple arguments are returned from the async function, `console.log` is
-called on each argument in order.
-
-__Arguments__
-
-* `function` - The function you want to eventually apply all arguments to.
-* `arguments...` - Any number of arguments to apply to the function.
-
-__Example__
-
-```js
-var hello = function(name, callback){
- setTimeout(function(){
- callback(null, 'hello ' + name);
- }, 1000);
-};
-```
-```js
-node> async.log(hello, 'world');
-'hello world'
-```
-
----------------------------------------
-
-
-### dir(function, arguments)
-
-Logs the result of an `async` function to the `console` using `console.dir` to
-display the properties of the resulting object. Only works in Node.js or
-in browsers that support `console.dir` and `console.error` (such as FF and Chrome).
-If multiple arguments are returned from the async function, `console.dir` is
-called on each argument in order.
-
-__Arguments__
-
-* `function` - The function you want to eventually apply all arguments to.
-* `arguments...` - Any number of arguments to apply to the function.
-
-__Example__
-
-```js
-var hello = function(name, callback){
- setTimeout(function(){
- callback(null, {hello: name});
- }, 1000);
-};
-```
-```js
-node> async.dir(hello, 'world');
-{hello: 'world'}
-```
-
----------------------------------------
-
-
-### noConflict()
-
-Changes the value of `async` back to its original value, returning a reference to the
-`async` object.
diff --git a/node_modules/grunt-contrib-clean/node_modules/async/dist/async.js b/node_modules/grunt-contrib-clean/node_modules/async/dist/async.js
deleted file mode 100644
index 31e7620..0000000
--- a/node_modules/grunt-contrib-clean/node_modules/async/dist/async.js
+++ /dev/null
@@ -1,1265 +0,0 @@
-/*!
- * async
- * https://github.com/caolan/async
- *
- * Copyright 2010-2014 Caolan McMahon
- * Released under the MIT license
- */
-(function () {
-
- var async = {};
- function noop() {}
- function identity(v) {
- return v;
- }
- function toBool(v) {
- return !!v;
- }
- function notId(v) {
- return !v;
- }
-
- // global on the server, window in the browser
- var previous_async;
-
- // Establish the root object, `window` (`self`) in the browser, `global`
- // on the server, or `this` in some virtual machines. We use `self`
- // instead of `window` for `WebWorker` support.
- var root = typeof self === 'object' && self.self === self && self ||
- typeof global === 'object' && global.global === global && global ||
- this;
-
- if (root != null) {
- previous_async = root.async;
- }
-
- async.noConflict = function () {
- root.async = previous_async;
- return async;
- };
-
- function only_once(fn) {
- return function() {
- if (fn === null) throw new Error("Callback was already called.");
- fn.apply(this, arguments);
- fn = null;
- };
- }
-
- function _once(fn) {
- return function() {
- if (fn === null) return;
- fn.apply(this, arguments);
- fn = null;
- };
- }
-
- //// cross-browser compatiblity functions ////
-
- var _toString = Object.prototype.toString;
-
- var _isArray = Array.isArray || function (obj) {
- return _toString.call(obj) === '[object Array]';
- };
-
- // Ported from underscore.js isObject
- var _isObject = function(obj) {
- var type = typeof obj;
- return type === 'function' || type === 'object' && !!obj;
- };
-
- function _isArrayLike(arr) {
- return _isArray(arr) || (
- // has a positive integer length property
- typeof arr.length === "number" &&
- arr.length >= 0 &&
- arr.length % 1 === 0
- );
- }
-
- function _arrayEach(arr, iterator) {
- var index = -1,
- length = arr.length;
-
- while (++index < length) {
- iterator(arr[index], index, arr);
- }
- }
-
- function _map(arr, iterator) {
- var index = -1,
- length = arr.length,
- result = Array(length);
-
- while (++index < length) {
- result[index] = iterator(arr[index], index, arr);
- }
- return result;
- }
-
- function _range(count) {
- return _map(Array(count), function (v, i) { return i; });
- }
-
- function _reduce(arr, iterator, memo) {
- _arrayEach(arr, function (x, i, a) {
- memo = iterator(memo, x, i, a);
- });
- return memo;
- }
-
- function _forEachOf(object, iterator) {
- _arrayEach(_keys(object), function (key) {
- iterator(object[key], key);
- });
- }
-
- function _indexOf(arr, item) {
- for (var i = 0; i < arr.length; i++) {
- if (arr[i] === item) return i;
- }
- return -1;
- }
-
- var _keys = Object.keys || function (obj) {
- var keys = [];
- for (var k in obj) {
- if (obj.hasOwnProperty(k)) {
- keys.push(k);
- }
- }
- return keys;
- };
-
- function _keyIterator(coll) {
- var i = -1;
- var len;
- var keys;
- if (_isArrayLike(coll)) {
- len = coll.length;
- return function next() {
- i++;
- return i < len ? i : null;
- };
- } else {
- keys = _keys(coll);
- len = keys.length;
- return function next() {
- i++;
- return i < len ? keys[i] : null;
- };
- }
- }
-
- // Similar to ES6's rest param (http://ariya.ofilabs.com/2013/03/es6-and-rest-parameter.html)
- // This accumulates the arguments passed into an array, after a given index.
- // From underscore.js (https://github.com/jashkenas/underscore/pull/2140).
- function _restParam(func, startIndex) {
- startIndex = startIndex == null ? func.length - 1 : +startIndex;
- return function() {
- var length = Math.max(arguments.length - startIndex, 0);
- var rest = Array(length);
- for (var index = 0; index < length; index++) {
- rest[index] = arguments[index + startIndex];
- }
- switch (startIndex) {
- case 0: return func.call(this, rest);
- case 1: return func.call(this, arguments[0], rest);
- }
- // Currently unused but handle cases outside of the switch statement:
- // var args = Array(startIndex + 1);
- // for (index = 0; index < startIndex; index++) {
- // args[index] = arguments[index];
- // }
- // args[startIndex] = rest;
- // return func.apply(this, args);
- };
- }
-
- function _withoutIndex(iterator) {
- return function (value, index, callback) {
- return iterator(value, callback);
- };
- }
-
- //// exported async module functions ////
-
- //// nextTick implementation with browser-compatible fallback ////
-
- // capture the global reference to guard against fakeTimer mocks
- var _setImmediate = typeof setImmediate === 'function' && setImmediate;
-
- var _delay = _setImmediate ? function(fn) {
- // not a direct alias for IE10 compatibility
- _setImmediate(fn);
- } : function(fn) {
- setTimeout(fn, 0);
- };
-
- if (typeof process === 'object' && typeof process.nextTick === 'function') {
- async.nextTick = process.nextTick;
- } else {
- async.nextTick = _delay;
- }
- async.setImmediate = _setImmediate ? _delay : async.nextTick;
-
-
- async.forEach =
- async.each = function (arr, iterator, callback) {
- return async.eachOf(arr, _withoutIndex(iterator), callback);
- };
-
- async.forEachSeries =
- async.eachSeries = function (arr, iterator, callback) {
- return async.eachOfSeries(arr, _withoutIndex(iterator), callback);
- };
-
-
- async.forEachLimit =
- async.eachLimit = function (arr, limit, iterator, callback) {
- return _eachOfLimit(limit)(arr, _withoutIndex(iterator), callback);
- };
-
- async.forEachOf =
- async.eachOf = function (object, iterator, callback) {
- callback = _once(callback || noop);
- object = object || [];
-
- var iter = _keyIterator(object);
- var key, completed = 0;
-
- while ((key = iter()) != null) {
- completed += 1;
- iterator(object[key], key, only_once(done));
- }
-
- if (completed === 0) callback(null);
-
- function done(err) {
- completed--;
- if (err) {
- callback(err);
- }
- // Check key is null in case iterator isn't exhausted
- // and done resolved synchronously.
- else if (key === null && completed <= 0) {
- callback(null);
- }
- }
- };
-
- async.forEachOfSeries =
- async.eachOfSeries = function (obj, iterator, callback) {
- callback = _once(callback || noop);
- obj = obj || [];
- var nextKey = _keyIterator(obj);
- var key = nextKey();
- function iterate() {
- var sync = true;
- if (key === null) {
- return callback(null);
- }
- iterator(obj[key], key, only_once(function (err) {
- if (err) {
- callback(err);
- }
- else {
- key = nextKey();
- if (key === null) {
- return callback(null);
- } else {
- if (sync) {
- async.setImmediate(iterate);
- } else {
- iterate();
- }
- }
- }
- }));
- sync = false;
- }
- iterate();
- };
-
-
-
- async.forEachOfLimit =
- async.eachOfLimit = function (obj, limit, iterator, callback) {
- _eachOfLimit(limit)(obj, iterator, callback);
- };
-
- function _eachOfLimit(limit) {
-
- return function (obj, iterator, callback) {
- callback = _once(callback || noop);
- obj = obj || [];
- var nextKey = _keyIterator(obj);
- if (limit <= 0) {
- return callback(null);
- }
- var done = false;
- var running = 0;
- var errored = false;
-
- (function replenish () {
- if (done && running <= 0) {
- return callback(null);
- }
-
- while (running < limit && !errored) {
- var key = nextKey();
- if (key === null) {
- done = true;
- if (running <= 0) {
- callback(null);
- }
- return;
- }
- running += 1;
- iterator(obj[key], key, only_once(function (err) {
- running -= 1;
- if (err) {
- callback(err);
- errored = true;
- }
- else {
- replenish();
- }
- }));
- }
- })();
- };
- }
-
-
- function doParallel(fn) {
- return function (obj, iterator, callback) {
- return fn(async.eachOf, obj, iterator, callback);
- };
- }
- function doParallelLimit(fn) {
- return function (obj, limit, iterator, callback) {
- return fn(_eachOfLimit(limit), obj, iterator, callback);
- };
- }
- function doSeries(fn) {
- return function (obj, iterator, callback) {
- return fn(async.eachOfSeries, obj, iterator, callback);
- };
- }
-
- function _asyncMap(eachfn, arr, iterator, callback) {
- callback = _once(callback || noop);
- arr = arr || [];
- var results = _isArrayLike(arr) ? [] : {};
- eachfn(arr, function (value, index, callback) {
- iterator(value, function (err, v) {
- results[index] = v;
- callback(err);
- });
- }, function (err) {
- callback(err, results);
- });
- }
-
- async.map = doParallel(_asyncMap);
- async.mapSeries = doSeries(_asyncMap);
- async.mapLimit = doParallelLimit(_asyncMap);
-
- // reduce only has a series version, as doing reduce in parallel won't
- // work in many situations.
- async.inject =
- async.foldl =
- async.reduce = function (arr, memo, iterator, callback) {
- async.eachOfSeries(arr, function (x, i, callback) {
- iterator(memo, x, function (err, v) {
- memo = v;
- callback(err);
- });
- }, function (err) {
- callback(err, memo);
- });
- };
-
- async.foldr =
- async.reduceRight = function (arr, memo, iterator, callback) {
- var reversed = _map(arr, identity).reverse();
- async.reduce(reversed, memo, iterator, callback);
- };
-
- async.transform = function (arr, memo, iterator, callback) {
- if (arguments.length === 3) {
- callback = iterator;
- iterator = memo;
- memo = _isArray(arr) ? [] : {};
- }
-
- async.eachOf(arr, function(v, k, cb) {
- iterator(memo, v, k, cb);
- }, function(err) {
- callback(err, memo);
- });
- };
-
- function _filter(eachfn, arr, iterator, callback) {
- var results = [];
- eachfn(arr, function (x, index, callback) {
- iterator(x, function (v) {
- if (v) {
- results.push({index: index, value: x});
- }
- callback();
- });
- }, function () {
- callback(_map(results.sort(function (a, b) {
- return a.index - b.index;
- }), function (x) {
- return x.value;
- }));
- });
- }
-
- async.select =
- async.filter = doParallel(_filter);
-
- async.selectLimit =
- async.filterLimit = doParallelLimit(_filter);
-
- async.selectSeries =
- async.filterSeries = doSeries(_filter);
-
- function _reject(eachfn, arr, iterator, callback) {
- _filter(eachfn, arr, function(value, cb) {
- iterator(value, function(v) {
- cb(!v);
- });
- }, callback);
- }
- async.reject = doParallel(_reject);
- async.rejectLimit = doParallelLimit(_reject);
- async.rejectSeries = doSeries(_reject);
-
- function _createTester(eachfn, check, getResult) {
- return function(arr, limit, iterator, cb) {
- function done() {
- if (cb) cb(getResult(false, void 0));
- }
- function iteratee(x, _, callback) {
- if (!cb) return callback();
- iterator(x, function (v) {
- if (cb && check(v)) {
- cb(getResult(true, x));
- cb = iterator = false;
- }
- callback();
- });
- }
- if (arguments.length > 3) {
- eachfn(arr, limit, iteratee, done);
- } else {
- cb = iterator;
- iterator = limit;
- eachfn(arr, iteratee, done);
- }
- };
- }
-
- async.any =
- async.some = _createTester(async.eachOf, toBool, identity);
-
- async.someLimit = _createTester(async.eachOfLimit, toBool, identity);
-
- async.all =
- async.every = _createTester(async.eachOf, notId, notId);
-
- async.everyLimit = _createTester(async.eachOfLimit, notId, notId);
-
- function _findGetResult(v, x) {
- return x;
- }
- async.detect = _createTester(async.eachOf, identity, _findGetResult);
- async.detectSeries = _createTester(async.eachOfSeries, identity, _findGetResult);
- async.detectLimit = _createTester(async.eachOfLimit, identity, _findGetResult);
-
- async.sortBy = function (arr, iterator, callback) {
- async.map(arr, function (x, callback) {
- iterator(x, function (err, criteria) {
- if (err) {
- callback(err);
- }
- else {
- callback(null, {value: x, criteria: criteria});
- }
- });
- }, function (err, results) {
- if (err) {
- return callback(err);
- }
- else {
- callback(null, _map(results.sort(comparator), function (x) {
- return x.value;
- }));
- }
-
- });
-
- function comparator(left, right) {
- var a = left.criteria, b = right.criteria;
- return a < b ? -1 : a > b ? 1 : 0;
- }
- };
-
- async.auto = function (tasks, concurrency, callback) {
- if (typeof arguments[1] === 'function') {
- // concurrency is optional, shift the args.
- callback = concurrency;
- concurrency = null;
- }
- callback = _once(callback || noop);
- var keys = _keys(tasks);
- var remainingTasks = keys.length;
- if (!remainingTasks) {
- return callback(null);
- }
- if (!concurrency) {
- concurrency = remainingTasks;
- }
-
- var results = {};
- var runningTasks = 0;
-
- var hasError = false;
-
- var listeners = [];
- function addListener(fn) {
- listeners.unshift(fn);
- }
- function removeListener(fn) {
- var idx = _indexOf(listeners, fn);
- if (idx >= 0) listeners.splice(idx, 1);
- }
- function taskComplete() {
- remainingTasks--;
- _arrayEach(listeners.slice(0), function (fn) {
- fn();
- });
- }
-
- addListener(function () {
- if (!remainingTasks) {
- callback(null, results);
- }
- });
-
- _arrayEach(keys, function (k) {
- if (hasError) return;
- var task = _isArray(tasks[k]) ? tasks[k]: [tasks[k]];
- var taskCallback = _restParam(function(err, args) {
- runningTasks--;
- if (args.length <= 1) {
- args = args[0];
- }
- if (err) {
- var safeResults = {};
- _forEachOf(results, function(val, rkey) {
- safeResults[rkey] = val;
- });
- safeResults[k] = args;
- hasError = true;
-
- callback(err, safeResults);
- }
- else {
- results[k] = args;
- async.setImmediate(taskComplete);
- }
- });
- var requires = task.slice(0, task.length - 1);
- // prevent dead-locks
- var len = requires.length;
- var dep;
- while (len--) {
- if (!(dep = tasks[requires[len]])) {
- throw new Error('Has nonexistent dependency in ' + requires.join(', '));
- }
- if (_isArray(dep) && _indexOf(dep, k) >= 0) {
- throw new Error('Has cyclic dependencies');
- }
- }
- function ready() {
- return runningTasks < concurrency && _reduce(requires, function (a, x) {
- return (a && results.hasOwnProperty(x));
- }, true) && !results.hasOwnProperty(k);
- }
- if (ready()) {
- runningTasks++;
- task[task.length - 1](taskCallback, results);
- }
- else {
- addListener(listener);
- }
- function listener() {
- if (ready()) {
- runningTasks++;
- removeListener(listener);
- task[task.length - 1](taskCallback, results);
- }
- }
- });
- };
-
-
-
- async.retry = function(times, task, callback) {
- var DEFAULT_TIMES = 5;
- var DEFAULT_INTERVAL = 0;
-
- var attempts = [];
-
- var opts = {
- times: DEFAULT_TIMES,
- interval: DEFAULT_INTERVAL
- };
-
- function parseTimes(acc, t){
- if(typeof t === 'number'){
- acc.times = parseInt(t, 10) || DEFAULT_TIMES;
- } else if(typeof t === 'object'){
- acc.times = parseInt(t.times, 10) || DEFAULT_TIMES;
- acc.interval = parseInt(t.interval, 10) || DEFAULT_INTERVAL;
- } else {
- throw new Error('Unsupported argument type for \'times\': ' + typeof t);
- }
- }
-
- var length = arguments.length;
- if (length < 1 || length > 3) {
- throw new Error('Invalid arguments - must be either (task), (task, callback), (times, task) or (times, task, callback)');
- } else if (length <= 2 && typeof times === 'function') {
- callback = task;
- task = times;
- }
- if (typeof times !== 'function') {
- parseTimes(opts, times);
- }
- opts.callback = callback;
- opts.task = task;
-
- function wrappedTask(wrappedCallback, wrappedResults) {
- function retryAttempt(task, finalAttempt) {
- return function(seriesCallback) {
- task(function(err, result){
- seriesCallback(!err || finalAttempt, {err: err, result: result});
- }, wrappedResults);
- };
- }
-
- function retryInterval(interval){
- return function(seriesCallback){
- setTimeout(function(){
- seriesCallback(null);
- }, interval);
- };
- }
-
- while (opts.times) {
-
- var finalAttempt = !(opts.times-=1);
- attempts.push(retryAttempt(opts.task, finalAttempt));
- if(!finalAttempt && opts.interval > 0){
- attempts.push(retryInterval(opts.interval));
- }
- }
-
- async.series(attempts, function(done, data){
- data = data[data.length - 1];
- (wrappedCallback || opts.callback)(data.err, data.result);
- });
- }
-
- // If a callback is passed, run this as a controll flow
- return opts.callback ? wrappedTask() : wrappedTask;
- };
-
- async.waterfall = function (tasks, callback) {
- callback = _once(callback || noop);
- if (!_isArray(tasks)) {
- var err = new Error('First argument to waterfall must be an array of functions');
- return callback(err);
- }
- if (!tasks.length) {
- return callback();
- }
- function wrapIterator(iterator) {
- return _restParam(function (err, args) {
- if (err) {
- callback.apply(null, [err].concat(args));
- }
- else {
- var next = iterator.next();
- if (next) {
- args.push(wrapIterator(next));
- }
- else {
- args.push(callback);
- }
- ensureAsync(iterator).apply(null, args);
- }
- });
- }
- wrapIterator(async.iterator(tasks))();
- };
-
- function _parallel(eachfn, tasks, callback) {
- callback = callback || noop;
- var results = _isArrayLike(tasks) ? [] : {};
-
- eachfn(tasks, function (task, key, callback) {
- task(_restParam(function (err, args) {
- if (args.length <= 1) {
- args = args[0];
- }
- results[key] = args;
- callback(err);
- }));
- }, function (err) {
- callback(err, results);
- });
- }
-
- async.parallel = function (tasks, callback) {
- _parallel(async.eachOf, tasks, callback);
- };
-
- async.parallelLimit = function(tasks, limit, callback) {
- _parallel(_eachOfLimit(limit), tasks, callback);
- };
-
- async.series = function(tasks, callback) {
- _parallel(async.eachOfSeries, tasks, callback);
- };
-
- async.iterator = function (tasks) {
- function makeCallback(index) {
- function fn() {
- if (tasks.length) {
- tasks[index].apply(null, arguments);
- }
- return fn.next();
- }
- fn.next = function () {
- return (index < tasks.length - 1) ? makeCallback(index + 1): null;
- };
- return fn;
- }
- return makeCallback(0);
- };
-
- async.apply = _restParam(function (fn, args) {
- return _restParam(function (callArgs) {
- return fn.apply(
- null, args.concat(callArgs)
- );
- });
- });
-
- function _concat(eachfn, arr, fn, callback) {
- var result = [];
- eachfn(arr, function (x, index, cb) {
- fn(x, function (err, y) {
- result = result.concat(y || []);
- cb(err);
- });
- }, function (err) {
- callback(err, result);
- });
- }
- async.concat = doParallel(_concat);
- async.concatSeries = doSeries(_concat);
-
- async.whilst = function (test, iterator, callback) {
- callback = callback || noop;
- if (test()) {
- var next = _restParam(function(err, args) {
- if (err) {
- callback(err);
- } else if (test.apply(this, args)) {
- iterator(next);
- } else {
- callback.apply(null, [null].concat(args));
- }
- });
- iterator(next);
- } else {
- callback(null);
- }
- };
-
- async.doWhilst = function (iterator, test, callback) {
- var calls = 0;
- return async.whilst(function() {
- return ++calls <= 1 || test.apply(this, arguments);
- }, iterator, callback);
- };
-
- async.until = function (test, iterator, callback) {
- return async.whilst(function() {
- return !test.apply(this, arguments);
- }, iterator, callback);
- };
-
- async.doUntil = function (iterator, test, callback) {
- return async.doWhilst(iterator, function() {
- return !test.apply(this, arguments);
- }, callback);
- };
-
- async.during = function (test, iterator, callback) {
- callback = callback || noop;
-
- var next = _restParam(function(err, args) {
- if (err) {
- callback(err);
- } else {
- args.push(check);
- test.apply(this, args);
- }
- });
-
- var check = function(err, truth) {
- if (err) {
- callback(err);
- } else if (truth) {
- iterator(next);
- } else {
- callback(null);
- }
- };
-
- test(check);
- };
-
- async.doDuring = function (iterator, test, callback) {
- var calls = 0;
- async.during(function(next) {
- if (calls++ < 1) {
- next(null, true);
- } else {
- test.apply(this, arguments);
- }
- }, iterator, callback);
- };
-
- function _queue(worker, concurrency, payload) {
- if (concurrency == null) {
- concurrency = 1;
- }
- else if(concurrency === 0) {
- throw new Error('Concurrency must not be zero');
- }
- function _insert(q, data, pos, callback) {
- if (callback != null && typeof callback !== "function") {
- throw new Error("task callback must be a function");
- }
- q.started = true;
- if (!_isArray(data)) {
- data = [data];
- }
- if(data.length === 0 && q.idle()) {
- // call drain immediately if there are no tasks
- return async.setImmediate(function() {
- q.drain();
- });
- }
- _arrayEach(data, function(task) {
- var item = {
- data: task,
- callback: callback || noop
- };
-
- if (pos) {
- q.tasks.unshift(item);
- } else {
- q.tasks.push(item);
- }
-
- if (q.tasks.length === q.concurrency) {
- q.saturated();
- }
- });
- async.setImmediate(q.process);
- }
- function _next(q, tasks) {
- return function(){
- workers -= 1;
-
- var removed = false;
- var args = arguments;
- _arrayEach(tasks, function (task) {
- _arrayEach(workersList, function (worker, index) {
- if (worker === task && !removed) {
- workersList.splice(index, 1);
- removed = true;
- }
- });
-
- task.callback.apply(task, args);
- });
- if (q.tasks.length + workers === 0) {
- q.drain();
- }
- q.process();
- };
- }
-
- var workers = 0;
- var workersList = [];
- var q = {
- tasks: [],
- concurrency: concurrency,
- payload: payload,
- saturated: noop,
- empty: noop,
- drain: noop,
- started: false,
- paused: false,
- push: function (data, callback) {
- _insert(q, data, false, callback);
- },
- kill: function () {
- q.drain = noop;
- q.tasks = [];
- },
- unshift: function (data, callback) {
- _insert(q, data, true, callback);
- },
- process: function () {
- while(!q.paused && workers < q.concurrency && q.tasks.length){
-
- var tasks = q.payload ?
- q.tasks.splice(0, q.payload) :
- q.tasks.splice(0, q.tasks.length);
-
- var data = _map(tasks, function (task) {
- return task.data;
- });
-
- if (q.tasks.length === 0) {
- q.empty();
- }
- workers += 1;
- workersList.push(tasks[0]);
- var cb = only_once(_next(q, tasks));
- worker(data, cb);
- }
- },
- length: function () {
- return q.tasks.length;
- },
- running: function () {
- return workers;
- },
- workersList: function () {
- return workersList;
- },
- idle: function() {
- return q.tasks.length + workers === 0;
- },
- pause: function () {
- q.paused = true;
- },
- resume: function () {
- if (q.paused === false) { return; }
- q.paused = false;
- var resumeCount = Math.min(q.concurrency, q.tasks.length);
- // Need to call q.process once per concurrent
- // worker to preserve full concurrency after pause
- for (var w = 1; w <= resumeCount; w++) {
- async.setImmediate(q.process);
- }
- }
- };
- return q;
- }
-
- async.queue = function (worker, concurrency) {
- var q = _queue(function (items, cb) {
- worker(items[0], cb);
- }, concurrency, 1);
-
- return q;
- };
-
- async.priorityQueue = function (worker, concurrency) {
-
- function _compareTasks(a, b){
- return a.priority - b.priority;
- }
-
- function _binarySearch(sequence, item, compare) {
- var beg = -1,
- end = sequence.length - 1;
- while (beg < end) {
- var mid = beg + ((end - beg + 1) >>> 1);
- if (compare(item, sequence[mid]) >= 0) {
- beg = mid;
- } else {
- end = mid - 1;
- }
- }
- return beg;
- }
-
- function _insert(q, data, priority, callback) {
- if (callback != null && typeof callback !== "function") {
- throw new Error("task callback must be a function");
- }
- q.started = true;
- if (!_isArray(data)) {
- data = [data];
- }
- if(data.length === 0) {
- // call drain immediately if there are no tasks
- return async.setImmediate(function() {
- q.drain();
- });
- }
- _arrayEach(data, function(task) {
- var item = {
- data: task,
- priority: priority,
- callback: typeof callback === 'function' ? callback : noop
- };
-
- q.tasks.splice(_binarySearch(q.tasks, item, _compareTasks) + 1, 0, item);
-
- if (q.tasks.length === q.concurrency) {
- q.saturated();
- }
- async.setImmediate(q.process);
- });
- }
-
- // Start with a normal queue
- var q = async.queue(worker, concurrency);
-
- // Override push to accept second parameter representing priority
- q.push = function (data, priority, callback) {
- _insert(q, data, priority, callback);
- };
-
- // Remove unshift function
- delete q.unshift;
-
- return q;
- };
-
- async.cargo = function (worker, payload) {
- return _queue(worker, 1, payload);
- };
-
- function _console_fn(name) {
- return _restParam(function (fn, args) {
- fn.apply(null, args.concat([_restParam(function (err, args) {
- if (typeof console === 'object') {
- if (err) {
- if (console.error) {
- console.error(err);
- }
- }
- else if (console[name]) {
- _arrayEach(args, function (x) {
- console[name](x);
- });
- }
- }
- })]));
- });
- }
- async.log = _console_fn('log');
- async.dir = _console_fn('dir');
- /*async.info = _console_fn('info');
- async.warn = _console_fn('warn');
- async.error = _console_fn('error');*/
-
- async.memoize = function (fn, hasher) {
- var memo = {};
- var queues = {};
- var has = Object.prototype.hasOwnProperty;
- hasher = hasher || identity;
- var memoized = _restParam(function memoized(args) {
- var callback = args.pop();
- var key = hasher.apply(null, args);
- if (has.call(memo, key)) {
- async.setImmediate(function () {
- callback.apply(null, memo[key]);
- });
- }
- else if (has.call(queues, key)) {
- queues[key].push(callback);
- }
- else {
- queues[key] = [callback];
- fn.apply(null, args.concat([_restParam(function (args) {
- memo[key] = args;
- var q = queues[key];
- delete queues[key];
- for (var i = 0, l = q.length; i < l; i++) {
- q[i].apply(null, args);
- }
- })]));
- }
- });
- memoized.memo = memo;
- memoized.unmemoized = fn;
- return memoized;
- };
-
- async.unmemoize = function (fn) {
- return function () {
- return (fn.unmemoized || fn).apply(null, arguments);
- };
- };
-
- function _times(mapper) {
- return function (count, iterator, callback) {
- mapper(_range(count), iterator, callback);
- };
- }
-
- async.times = _times(async.map);
- async.timesSeries = _times(async.mapSeries);
- async.timesLimit = function (count, limit, iterator, callback) {
- return async.mapLimit(_range(count), limit, iterator, callback);
- };
-
- async.seq = function (/* functions... */) {
- var fns = arguments;
- return _restParam(function (args) {
- var that = this;
-
- var callback = args[args.length - 1];
- if (typeof callback == 'function') {
- args.pop();
- } else {
- callback = noop;
- }
-
- async.reduce(fns, args, function (newargs, fn, cb) {
- fn.apply(that, newargs.concat([_restParam(function (err, nextargs) {
- cb(err, nextargs);
- })]));
- },
- function (err, results) {
- callback.apply(that, [err].concat(results));
- });
- });
- };
-
- async.compose = function (/* functions... */) {
- return async.seq.apply(null, Array.prototype.reverse.call(arguments));
- };
-
-
- function _applyEach(eachfn) {
- return _restParam(function(fns, args) {
- var go = _restParam(function(args) {
- var that = this;
- var callback = args.pop();
- return eachfn(fns, function (fn, _, cb) {
- fn.apply(that, args.concat([cb]));
- },
- callback);
- });
- if (args.length) {
- return go.apply(this, args);
- }
- else {
- return go;
- }
- });
- }
-
- async.applyEach = _applyEach(async.eachOf);
- async.applyEachSeries = _applyEach(async.eachOfSeries);
-
-
- async.forever = function (fn, callback) {
- var done = only_once(callback || noop);
- var task = ensureAsync(fn);
- function next(err) {
- if (err) {
- return done(err);
- }
- task(next);
- }
- next();
- };
-
- function ensureAsync(fn) {
- return _restParam(function (args) {
- var callback = args.pop();
- args.push(function () {
- var innerArgs = arguments;
- if (sync) {
- async.setImmediate(function () {
- callback.apply(null, innerArgs);
- });
- } else {
- callback.apply(null, innerArgs);
- }
- });
- var sync = true;
- fn.apply(this, args);
- sync = false;
- });
- }
-
- async.ensureAsync = ensureAsync;
-
- async.constant = _restParam(function(values) {
- var args = [null].concat(values);
- return function (callback) {
- return callback.apply(this, args);
- };
- });
-
- async.wrapSync =
- async.asyncify = function asyncify(func) {
- return _restParam(function (args) {
- var callback = args.pop();
- var result;
- try {
- result = func.apply(this, args);
- } catch (e) {
- return callback(e);
- }
- // if result is Promise object
- if (_isObject(result) && typeof result.then === "function") {
- result.then(function(value) {
- callback(null, value);
- })["catch"](function(err) {
- callback(err.message ? err : new Error(err));
- });
- } else {
- callback(null, result);
- }
- });
- };
-
- // Node.js
- if (typeof module === 'object' && module.exports) {
- module.exports = async;
- }
- // AMD / RequireJS
- else if (typeof define === 'function' && define.amd) {
- define([], function () {
- return async;
- });
- }
- // included directly via
-
-
-
-