myth6
Version:
A segmentio/myth fork that supports node 6
1,644 lines (1,409 loc) • 2.27 MB
JavaScript
(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.myth = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
var autoprefixer = require('autoprefixer');
var calc = require('rework-calc');
var clone = require('utils-copy');
var color = require('rework-color-function');
var customMedia = require('rework-custom-media');
var dirname = require('path').dirname;
var fontVariant = require('rework-font-variant');
var hexAlpha = require('rework-hex-alpha');
var importer = require('rework-import');
var postcss = require('postcss');
var rebeccapurple = require('rework-rebeccapurple');
var Rework = require('rework');
var variables = require('rework-vars');
/**
* Import.
*
* @param {Object} options
* @param {String} source
* @return {Function}
*/
exports.import = function(options){
return 'undefined' == typeof window && options.source
? importer()
: function(){};
};
/**
* Variables.
*
* @param {Object} options
* @param {Object} variables
* @param {Boolean} preserve
* @return {Function}
*/
exports.variables = function(options){
return variables({
map: options.variables,
preserve: options.preserve
});
};
/**
* Custom media.
*
* @param {Object} options
* @return {Function}
*/
exports.customMedia = function(options){
return customMedia;
};
/**
* Hex alpha.
*
* @param {Object} options
* @return {Function}
*/
exports.hexAlpha = function(options){
return hexAlpha;
};
/**
* Color.
*
* @param {Object} options
* @return {Function}
*/
exports.color = function(options){
return color;
};
/**
* Calc.
*
* @param {Object} options
* @return {Function}
*/
exports.calc = function(options){
return calc;
};
/**
* Font variant.
*
* @param {Object} options
* @return {Function}
*/
exports.fontVariant = function(options){
return fontVariant;
};
/**
* Rebecca purple.
*
* @param {Object} options
* @return {Function}
*/
exports.rebeccapurple = function(options){
return rebeccapurple;
};
/**
* Prefixes.
*
* Unfortunately, Autoprefixer uses a different preprocessor, so we have to give
* it the CSS string and re-parse it again afterwards.
*
* @param {Object} options
* @param {Array} browsers
* @return {Function}
*/
exports.prefixes = function(options){
var opts = clone(options);
var src = options.source;
var prefixes = autoprefixer({ browsers: options.browsers });
var processor = postcss(prefixes);
return function(stylesheet, rework){
var str = rework.toString(options);
var css = processor.process(str, { from: src, to: src }).css;
// we don't need source mapping the second time reparsing
delete opts.source;
rework.obj = Rework(css, opts).obj;
};
};
},{"autoprefixer":10,"path":181,"postcss":200,"rework":229,"rework-calc":215,"rework-color-function":217,"rework-custom-media":219,"rework-font-variant":220,"rework-hex-alpha":222,"rework-import":224,"rework-rebeccapurple":225,"rework-vars":226,"utils-copy":253}],2:[function(require,module,exports){
var features = require('./features');
var Rework = require('rework');
/**
* Expose `myth`.
*/
module.exports = exports = myth;
/**
* Expose `features`.
*/
exports.features = Object.keys(features);
/**
* Rework a CSS `string`, or return the Myth rework plugin.
*
* @param {String} string (optional)
* @param {Object} options (optional)
* @property {String} source
* @property {Array} browsers
* @property {Boolean} compress
* @property {Object} features
* @return {String}
*/
function myth(string, options){
if ('object' == typeof string) options = string, string = null;
options = options || {};
if ('string' != typeof string) return plugin(options);
return Rework(string, options)
.use(plugin(options))
.toString(options);
}
/**
* Generate a Myth rework plugin with `options`.
*
* @param {Object} options
* @return {Function}
*/
function plugin(options){
return function(stylesheet, rework){
var enabled = options.features || {};
exports.features.forEach(function(key){
if (enabled[key] === false) return;
var plugin = features[key](options);
rework.use(plugin);
});
};
}
},{"./features":1,"rework":229}],3:[function(require,module,exports){
(function (process,__filename){
/** vim: et:ts=4:sw=4:sts=4
* @license amdefine 1.0.0 Copyright (c) 2011-2015, The Dojo Foundation All Rights Reserved.
* Available via the MIT or new BSD license.
* see: http://github.com/jrburke/amdefine for details
*/
/*jslint node: true */
/*global module, process */
'use strict';
/**
* Creates a define for node.
* @param {Object} module the "module" object that is defined by Node for the
* current module.
* @param {Function} [requireFn]. Node's require function for the current module.
* It only needs to be passed in Node versions before 0.5, when module.require
* did not exist.
* @returns {Function} a define function that is usable for the current node
* module.
*/
function amdefine(module, requireFn) {
'use strict';
var defineCache = {},
loaderCache = {},
alreadyCalled = false,
path = require('path'),
makeRequire, stringRequire;
/**
* Trims the . and .. from an array of path segments.
* It will keep a leading path segment if a .. will become
* the first path segment, to help with module name lookups,
* which act like paths, but can be remapped. But the end result,
* all paths that use this function should look normalized.
* NOTE: this method MODIFIES the input array.
* @param {Array} ary the array of path segments.
*/
function trimDots(ary) {
var i, part;
for (i = 0; ary[i]; i+= 1) {
part = ary[i];
if (part === '.') {
ary.splice(i, 1);
i -= 1;
} else if (part === '..') {
if (i === 1 && (ary[2] === '..' || ary[0] === '..')) {
//End of the line. Keep at least one non-dot
//path segment at the front so it can be mapped
//correctly to disk. Otherwise, there is likely
//no path mapping for a path starting with '..'.
//This can still fail, but catches the most reasonable
//uses of ..
break;
} else if (i > 0) {
ary.splice(i - 1, 2);
i -= 2;
}
}
}
}
function normalize(name, baseName) {
var baseParts;
//Adjust any relative paths.
if (name && name.charAt(0) === '.') {
//If have a base name, try to normalize against it,
//otherwise, assume it is a top-level require that will
//be relative to baseUrl in the end.
if (baseName) {
baseParts = baseName.split('/');
baseParts = baseParts.slice(0, baseParts.length - 1);
baseParts = baseParts.concat(name.split('/'));
trimDots(baseParts);
name = baseParts.join('/');
}
}
return name;
}
/**
* Create the normalize() function passed to a loader plugin's
* normalize method.
*/
function makeNormalize(relName) {
return function (name) {
return normalize(name, relName);
};
}
function makeLoad(id) {
function load(value) {
loaderCache[id] = value;
}
load.fromText = function (id, text) {
//This one is difficult because the text can/probably uses
//define, and any relative paths and requires should be relative
//to that id was it would be found on disk. But this would require
//bootstrapping a module/require fairly deeply from node core.
//Not sure how best to go about that yet.
throw new Error('amdefine does not implement load.fromText');
};
return load;
}
makeRequire = function (systemRequire, exports, module, relId) {
function amdRequire(deps, callback) {
if (typeof deps === 'string') {
//Synchronous, single module require('')
return stringRequire(systemRequire, exports, module, deps, relId);
} else {
//Array of dependencies with a callback.
//Convert the dependencies to modules.
deps = deps.map(function (depName) {
return stringRequire(systemRequire, exports, module, depName, relId);
});
//Wait for next tick to call back the require call.
if (callback) {
process.nextTick(function () {
callback.apply(null, deps);
});
}
}
}
amdRequire.toUrl = function (filePath) {
if (filePath.indexOf('.') === 0) {
return normalize(filePath, path.dirname(module.filename));
} else {
return filePath;
}
};
return amdRequire;
};
//Favor explicit value, passed in if the module wants to support Node 0.4.
requireFn = requireFn || function req() {
return module.require.apply(module, arguments);
};
function runFactory(id, deps, factory) {
var r, e, m, result;
if (id) {
e = loaderCache[id] = {};
m = {
id: id,
uri: __filename,
exports: e
};
r = makeRequire(requireFn, e, m, id);
} else {
//Only support one define call per file
if (alreadyCalled) {
throw new Error('amdefine with no module ID cannot be called more than once per file.');
}
alreadyCalled = true;
//Use the real variables from node
//Use module.exports for exports, since
//the exports in here is amdefine exports.
e = module.exports;
m = module;
r = makeRequire(requireFn, e, m, module.id);
}
//If there are dependencies, they are strings, so need
//to convert them to dependency values.
if (deps) {
deps = deps.map(function (depName) {
return r(depName);
});
}
//Call the factory with the right dependencies.
if (typeof factory === 'function') {
result = factory.apply(m.exports, deps);
} else {
result = factory;
}
if (result !== undefined) {
m.exports = result;
if (id) {
loaderCache[id] = m.exports;
}
}
}
stringRequire = function (systemRequire, exports, module, id, relId) {
//Split the ID by a ! so that
var index = id.indexOf('!'),
originalId = id,
prefix, plugin;
if (index === -1) {
id = normalize(id, relId);
//Straight module lookup. If it is one of the special dependencies,
//deal with it, otherwise, delegate to node.
if (id === 'require') {
return makeRequire(systemRequire, exports, module, relId);
} else if (id === 'exports') {
return exports;
} else if (id === 'module') {
return module;
} else if (loaderCache.hasOwnProperty(id)) {
return loaderCache[id];
} else if (defineCache[id]) {
runFactory.apply(null, defineCache[id]);
return loaderCache[id];
} else {
if(systemRequire) {
return systemRequire(originalId);
} else {
throw new Error('No module with ID: ' + id);
}
}
} else {
//There is a plugin in play.
prefix = id.substring(0, index);
id = id.substring(index + 1, id.length);
plugin = stringRequire(systemRequire, exports, module, prefix, relId);
if (plugin.normalize) {
id = plugin.normalize(id, makeNormalize(relId));
} else {
//Normalize the ID normally.
id = normalize(id, relId);
}
if (loaderCache[id]) {
return loaderCache[id];
} else {
plugin.load(id, makeRequire(systemRequire, exports, module, relId), makeLoad(id), {});
return loaderCache[id];
}
}
};
//Create a define function specific to the module asking for amdefine.
function define(id, deps, factory) {
if (Array.isArray(id)) {
factory = deps;
deps = id;
id = undefined;
} else if (typeof id !== 'string') {
factory = id;
id = deps = undefined;
}
if (deps && !Array.isArray(deps)) {
factory = deps;
deps = undefined;
}
if (!deps) {
deps = ['require', 'exports', 'module'];
}
//Set up properties for this module. If an ID, then use
//internal cache. If no ID, then use the external variables
//for this node module.
if (id) {
//Put the module in deep freeze until there is a
//require call for it.
defineCache[id] = [id, deps, factory];
} else {
runFactory(id, deps, factory);
}
}
//define.require, which has access to all the values in the
//cache. Useful for AMD modules that all have IDs in the file,
//but need to finally export a value to node based on one of those
//IDs.
define.require = function (id) {
if (loaderCache[id]) {
return loaderCache[id];
}
if (defineCache[id]) {
runFactory.apply(null, defineCache[id]);
return loaderCache[id];
}
};
define.amd = {};
return define;
}
module.exports = amdefine;
}).call(this,require('_process'),"/node_modules/amdefine/amdefine.js")
},{"_process":212,"path":181}],4:[function(require,module,exports){
'use strict';
var arrayUniq = require('array-uniq');
module.exports = function () {
return arrayUniq([].concat.apply([], arguments));
};
},{"array-uniq":5}],5:[function(require,module,exports){
(function (global){
'use strict';
// there's 3 implementations written in increasing order of efficiency
// 1 - no Set type is defined
function uniqNoSet(arr) {
var ret = [];
for (var i = 0; i < arr.length; i++) {
if (ret.indexOf(arr[i]) === -1) {
ret.push(arr[i]);
}
}
return ret;
}
// 2 - a simple Set type is defined
function uniqSet(arr) {
var seen = new Set();
return arr.filter(function (el) {
if (!seen.has(el)) {
seen.add(el);
return true;
}
return false;
});
}
// 3 - a standard Set type is defined and it has a forEach method
function uniqSetWithForEach(arr) {
var ret = [];
(new Set(arr)).forEach(function (el) {
ret.push(el);
});
return ret;
}
// V8 currently has a broken implementation
// https://github.com/joyent/node/issues/8449
function doesForEachActuallyWork() {
var ret = false;
(new Set([true])).forEach(function (el) {
ret = el;
});
return ret === true;
}
if ('Set' in global) {
if (typeof Set.prototype.forEach === 'function' && doesForEachActuallyWork()) {
module.exports = uniqSetWithForEach;
} else {
module.exports = uniqSet;
}
} else {
module.exports = uniqNoSet;
}
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],6:[function(require,module,exports){
// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
//
// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
//
// Originally from narwhal.js (http://narwhaljs.org)
// Copyright (c) 2009 Thomas Robinson <280north.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the 'Software'), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS 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.
// when used in node, this will actually load the util module we depend on
// versus loading the builtin util module as happens otherwise
// this is a bug in node module loading as far as I am concerned
var util = require('util/');
var pSlice = Array.prototype.slice;
var hasOwn = Object.prototype.hasOwnProperty;
// 1. The assert module provides functions that throw
// AssertionError's when particular conditions are not met. The
// assert module must conform to the following interface.
var assert = module.exports = ok;
// 2. The AssertionError is defined in assert.
// new assert.AssertionError({ message: message,
// actual: actual,
// expected: expected })
assert.AssertionError = function AssertionError(options) {
this.name = 'AssertionError';
this.actual = options.actual;
this.expected = options.expected;
this.operator = options.operator;
if (options.message) {
this.message = options.message;
this.generatedMessage = false;
} else {
this.message = getMessage(this);
this.generatedMessage = true;
}
var stackStartFunction = options.stackStartFunction || fail;
if (Error.captureStackTrace) {
Error.captureStackTrace(this, stackStartFunction);
}
else {
// non v8 browsers so we can have a stacktrace
var err = new Error();
if (err.stack) {
var out = err.stack;
// try to strip useless frames
var fn_name = stackStartFunction.name;
var idx = out.indexOf('\n' + fn_name);
if (idx >= 0) {
// once we have located the function frame
// we need to strip out everything before it (and its line)
var next_line = out.indexOf('\n', idx + 1);
out = out.substring(next_line + 1);
}
this.stack = out;
}
}
};
// assert.AssertionError instanceof Error
util.inherits(assert.AssertionError, Error);
function replacer(key, value) {
if (util.isUndefined(value)) {
return '' + value;
}
if (util.isNumber(value) && !isFinite(value)) {
return value.toString();
}
if (util.isFunction(value) || util.isRegExp(value)) {
return value.toString();
}
return value;
}
function truncate(s, n) {
if (util.isString(s)) {
return s.length < n ? s : s.slice(0, n);
} else {
return s;
}
}
function getMessage(self) {
return truncate(JSON.stringify(self.actual, replacer), 128) + ' ' +
self.operator + ' ' +
truncate(JSON.stringify(self.expected, replacer), 128);
}
// At present only the three keys mentioned above are used and
// understood by the spec. Implementations or sub modules can pass
// other keys to the AssertionError's constructor - they will be
// ignored.
// 3. All of the following functions must throw an AssertionError
// when a corresponding condition is not met, with a message that
// may be undefined if not provided. All assertion methods provide
// both the actual and expected values to the assertion error for
// display purposes.
function fail(actual, expected, message, operator, stackStartFunction) {
throw new assert.AssertionError({
message: message,
actual: actual,
expected: expected,
operator: operator,
stackStartFunction: stackStartFunction
});
}
// EXTENSION! allows for well behaved errors defined elsewhere.
assert.fail = fail;
// 4. Pure assertion tests whether a value is truthy, as determined
// by !!guard.
// assert.ok(guard, message_opt);
// This statement is equivalent to assert.equal(true, !!guard,
// message_opt);. To test strictly for the value true, use
// assert.strictEqual(true, guard, message_opt);.
function ok(value, message) {
if (!value) fail(value, true, message, '==', assert.ok);
}
assert.ok = ok;
// 5. The equality assertion tests shallow, coercive equality with
// ==.
// assert.equal(actual, expected, message_opt);
assert.equal = function equal(actual, expected, message) {
if (actual != expected) fail(actual, expected, message, '==', assert.equal);
};
// 6. The non-equality assertion tests for whether two objects are not equal
// with != assert.notEqual(actual, expected, message_opt);
assert.notEqual = function notEqual(actual, expected, message) {
if (actual == expected) {
fail(actual, expected, message, '!=', assert.notEqual);
}
};
// 7. The equivalence assertion tests a deep equality relation.
// assert.deepEqual(actual, expected, message_opt);
assert.deepEqual = function deepEqual(actual, expected, message) {
if (!_deepEqual(actual, expected)) {
fail(actual, expected, message, 'deepEqual', assert.deepEqual);
}
};
function _deepEqual(actual, expected) {
// 7.1. All identical values are equivalent, as determined by ===.
if (actual === expected) {
return true;
} else if (util.isBuffer(actual) && util.isBuffer(expected)) {
if (actual.length != expected.length) return false;
for (var i = 0; i < actual.length; i++) {
if (actual[i] !== expected[i]) return false;
}
return true;
// 7.2. If the expected value is a Date object, the actual value is
// equivalent if it is also a Date object that refers to the same time.
} else if (util.isDate(actual) && util.isDate(expected)) {
return actual.getTime() === expected.getTime();
// 7.3 If the expected value is a RegExp object, the actual value is
// equivalent if it is also a RegExp object with the same source and
// properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
} else if (util.isRegExp(actual) && util.isRegExp(expected)) {
return actual.source === expected.source &&
actual.global === expected.global &&
actual.multiline === expected.multiline &&
actual.lastIndex === expected.lastIndex &&
actual.ignoreCase === expected.ignoreCase;
// 7.4. Other pairs that do not both pass typeof value == 'object',
// equivalence is determined by ==.
} else if (!util.isObject(actual) && !util.isObject(expected)) {
return actual == expected;
// 7.5 For all other Object pairs, including Array objects, equivalence is
// determined by having the same number of owned properties (as verified
// with Object.prototype.hasOwnProperty.call), the same set of keys
// (although not necessarily the same order), equivalent values for every
// corresponding key, and an identical 'prototype' property. Note: this
// accounts for both named and indexed properties on Arrays.
} else {
return objEquiv(actual, expected);
}
}
function isArguments(object) {
return Object.prototype.toString.call(object) == '[object Arguments]';
}
function objEquiv(a, b) {
if (util.isNullOrUndefined(a) || util.isNullOrUndefined(b))
return false;
// an identical 'prototype' property.
if (a.prototype !== b.prototype) return false;
// if one is a primitive, the other must be same
if (util.isPrimitive(a) || util.isPrimitive(b)) {
return a === b;
}
var aIsArgs = isArguments(a),
bIsArgs = isArguments(b);
if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs))
return false;
if (aIsArgs) {
a = pSlice.call(a);
b = pSlice.call(b);
return _deepEqual(a, b);
}
var ka = objectKeys(a),
kb = objectKeys(b),
key, i;
// having the same number of owned properties (keys incorporates
// hasOwnProperty)
if (ka.length != kb.length)
return false;
//the same set of keys (although not necessarily the same order),
ka.sort();
kb.sort();
//~~~cheap key test
for (i = ka.length - 1; i >= 0; i--) {
if (ka[i] != kb[i])
return false;
}
//equivalent values for every corresponding key, and
//~~~possibly expensive deep test
for (i = ka.length - 1; i >= 0; i--) {
key = ka[i];
if (!_deepEqual(a[key], b[key])) return false;
}
return true;
}
// 8. The non-equivalence assertion tests for any deep inequality.
// assert.notDeepEqual(actual, expected, message_opt);
assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
if (_deepEqual(actual, expected)) {
fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
}
};
// 9. The strict equality assertion tests strict equality, as determined by ===.
// assert.strictEqual(actual, expected, message_opt);
assert.strictEqual = function strictEqual(actual, expected, message) {
if (actual !== expected) {
fail(actual, expected, message, '===', assert.strictEqual);
}
};
// 10. The strict non-equality assertion tests for strict inequality, as
// determined by !==. assert.notStrictEqual(actual, expected, message_opt);
assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
if (actual === expected) {
fail(actual, expected, message, '!==', assert.notStrictEqual);
}
};
function expectedException(actual, expected) {
if (!actual || !expected) {
return false;
}
if (Object.prototype.toString.call(expected) == '[object RegExp]') {
return expected.test(actual);
} else if (actual instanceof expected) {
return true;
} else if (expected.call({}, actual) === true) {
return true;
}
return false;
}
function _throws(shouldThrow, block, expected, message) {
var actual;
if (util.isString(expected)) {
message = expected;
expected = null;
}
try {
block();
} catch (e) {
actual = e;
}
message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
(message ? ' ' + message : '.');
if (shouldThrow && !actual) {
fail(actual, expected, 'Missing expected exception' + message);
}
if (!shouldThrow && expectedException(actual, expected)) {
fail(actual, expected, 'Got unwanted exception' + message);
}
if ((shouldThrow && actual && expected &&
!expectedException(actual, expected)) || (!shouldThrow && actual)) {
throw actual;
}
}
// 11. Expected to throw an error:
// assert.throws(block, Error_opt, message_opt);
assert.throws = function(block, /*optional*/error, /*optional*/message) {
_throws.apply(this, [true].concat(pSlice.call(arguments)));
};
// EXTENSION! This is annoying to write outside this module.
assert.doesNotThrow = function(block, /*optional*/message) {
_throws.apply(this, [false].concat(pSlice.call(arguments)));
};
assert.ifError = function(err) { if (err) {throw err;}};
var objectKeys = Object.keys || function (obj) {
var keys = [];
for (var key in obj) {
if (hasOwn.call(obj, key)) keys.push(key);
}
return keys;
};
},{"util/":249}],7:[function(require,module,exports){
(function (process,global){
/*!
* 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