node_modules/asap/raw.js

+"use strict";
+
+var domain; // The domain module is executed on demand
+var hasSetImmediate = typeof setImmediate === "function";
+
+// Use the fastest means possible to execute a task in its own turn, with
+// priority over other events including network IO events in Node.js.
+//
+// An exception thrown by a task will permanently interrupt the processing of
+// subsequent tasks. The higher level `asap` function ensures that if an
+// exception is thrown by a task, that the task queue will continue flushing as
+// soon as possible, but if you use `rawAsap` directly, you are responsible to
+// either ensure that no exceptions are thrown from your task, or to manually
+// call `rawAsap.requestFlush` if an exception is thrown.
+module.exports = rawAsap;
+function rawAsap(task) {
+    if (!queue.length) {
+        requestFlush();
+        flushing = true;
+    }
+    // Avoids a function call
+    queue[queue.length] = task;
+}
+
+var queue = [];
+// Once a flush has been requested, no further calls to `requestFlush` are
+// necessary until the next `flush` completes.
+var flushing = false;
+// The position of the next task to execute in the task queue. This is
+// preserved between calls to `flush` so that it can be resumed if
+// a task throws an exception.
+var index = 0;
+// If a task schedules additional tasks recursively, the task queue can grow
+// unbounded. To prevent memory excaustion, the task queue will periodically
+// truncate already-completed tasks.
+var capacity = 1024;
+
+// The flush function processes all tasks that have been scheduled with
+// `rawAsap` unless and until one of those tasks throws an exception.
+// If a task throws an exception, `flush` ensures that its state will remain
+// consistent and will resume where it left off when called again.
+// However, `flush` does not make any arrangements to be called again if an
+// exception is thrown.
+function flush() {
+    while (index < queue.length) {
+        var currentIndex = index;
+        // Advance the index before calling the task. This ensures that we will
+        // begin flushing on the next task the task throws an error.
+        index = index + 1;
+        queue[currentIndex].call();
+        // Prevent leaking memory for long chains of recursive calls to `asap`.
+        // If we call `asap` within tasks scheduled by `asap`, the queue will
+        // grow, but to avoid an O(n) walk for every task we execute, we don't
+        // shift tasks off the queue after they have been executed.
+        // Instead, we periodically shift 1024 tasks off the queue.
+        if (index > capacity) {
+            // Manually shift all values starting at the index back to the
+            // beginning of the queue.
+            for (var scan = 0, newLength = queue.length - index; scan < newLength; scan++) {
+                queue[scan] = queue[scan + index];
+            }
+            queue.length -= index;
+            index = 0;
+        }
+    }
+    queue.length = 0;
+    index = 0;
+    flushing = false;
+}
+
+rawAsap.requestFlush = requestFlush;
+function requestFlush() {
+    // Ensure flushing is not bound to any domain.
+    // It is not sufficient to exit the domain, because domains exist on a stack.
+    // To execute code outside of any domain, the following dance is necessary.
+    var parentDomain = process.domain;
+    if (parentDomain) {
+        if (!domain) {
+            // Lazy execute the domain module.
+            // Only employed if the user elects to use domains.
+            domain = require("domain");
+        }
+        domain.active = process.domain = null;
+    }
+
+    // `setImmediate` is slower that `process.nextTick`, but `process.nextTick`
+    // cannot handle recursion.
+    // `requestFlush` will only be called recursively from `asap.js`, to resume
+    // flushing after an error is thrown into a domain.
+    // Conveniently, `setImmediate` was introduced in the same version
+    // `process.nextTick` started throwing recursion errors.
+    if (flushing && hasSetImmediate) {
+        setImmediate(flush);
+    } else {
+        process.nextTick(flush);
+    }
+
+    if (parentDomain) {
+        domain.active = process.domain = parentDomain;
+    }
+}

node_modules/assert-never/README.md

+# Assert Never [![npm version][npm-image]][npm-url]
+
+Helper function for [exhaustive checks][exhaustive-checks] of discriminated
+unions in TypeScript.
+
+## Installation
+
+```
+npm install --save assert-never
+```
+
+## Usage
+
+```ts
+import {assertNever} from "assert-never";
+
+type A = {type: 'a'};
+type B = {type: 'b'};
+type Union = A | B;
+
+function doSomething(arg: Union) {
+  if (arg.type === 'a') {
+    return something;
+  }
+
+  if (arg.type === 'b') {
+    return somethingElse;
+  }
+
+  // TS will error if there are other types in the union
+  // Will throw an Error when called at runtime. Use `assertNever(arg, true)`
+  // instead to fail silently.
+  return assertNever(arg);
+}
+```
+
+[npm-image]: https://badge.fury.io/js/assert-never.svg
+[npm-url]: https://badge.fury.io/js/assert-never
+[exhaustive-checks]: https://basarat.gitbooks.io/typescript/docs/types/discriminated-unions.html#exhaustive-checks

node_modules/assert-never/index.d.ts

+/**
+ * Helper function for exhaustive checks of discriminated unions.
+ * https://basarat.gitbooks.io/typescript/docs/types/discriminated-unions.html
+ *
+ * @example
+ *
+ *    type A = {type: 'a'};
+ *    type B = {type: 'b'};
+ *    type Union = A | B;
+ *
+ *    function doSomething(arg: Union) {
+ *      if (arg.type === 'a') {
+ *        return something;
+ *      }
+ *
+ *      if (arg.type === 'b') {
+ *        return somethingElse;
+ *      }
+ *
+ *      // TS will error if there are other types in the union
+ *      // Will throw an Error when called at runtime.
+ *      // Use `assertNever(arg, true)` instead to fail silently.
+ *      return assertNever(arg);
+ *    }
+ */
+export declare function assertNever(value: never, noThrow?: boolean): never;
+export default assertNever;

node_modules/assert-never/index.js

+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+/**
+ * Helper function for exhaustive checks of discriminated unions.
+ * https://basarat.gitbooks.io/typescript/docs/types/discriminated-unions.html
+ *
+ * @example
+ *
+ *    type A = {type: 'a'};
+ *    type B = {type: 'b'};
+ *    type Union = A | B;
+ *
+ *    function doSomething(arg: Union) {
+ *      if (arg.type === 'a') {
+ *        return something;
+ *      }
+ *
+ *      if (arg.type === 'b') {
+ *        return somethingElse;
+ *      }
+ *
+ *      // TS will error if there are other types in the union
+ *      // Will throw an Error when called at runtime.
+ *      // Use `assertNever(arg, true)` instead to fail silently.
+ *      return assertNever(arg);
+ *    }
+ */
+function assertNever(value, noThrow) {
+    if (noThrow) {
+        return value;
+    }
+    throw new Error("Unhandled discriminated union member: " + JSON.stringify(value));
+}
+exports.assertNever = assertNever;
+exports.default = assertNever;

node_modules/assert-never/index.ts

+/**
+ * Helper function for exhaustive checks of discriminated unions.
+ * https://basarat.gitbooks.io/typescript/docs/types/discriminated-unions.html
+ *
+ * @example
+ *
+ *    type A = {type: 'a'};
+ *    type B = {type: 'b'};
+ *    type Union = A | B;
+ *
+ *    function doSomething(arg: Union) {
+ *      if (arg.type === 'a') {
+ *        return something;
+ *      }
+ *
+ *      if (arg.type === 'b') {
+ *        return somethingElse;
+ *      }
+ *
+ *      // TS will error if there are other types in the union
+ *      // Will throw an Error when called at runtime.
+ *      // Use `assertNever(arg, true)` instead to fail silently.
+ *      return assertNever(arg);
+ *    }
+ */
+export function assertNever(value: never, noThrow?: boolean): never {
+  if (noThrow) {
+    return value
+  }
+
+  throw new Error(
+    `Unhandled discriminated union member: ${JSON.stringify(value)}`,
+  );
+}
+
+export default assertNever;

node_modules/assert-never/package.json

+{
+  "name": "assert-never",
+  "version": "1.2.1",
+  "description": "Helper function for exhaustive checks of discriminated unions in TypeScript",
+  "main": "index.js",
+  "typings": "index.d.ts",
+  "files": [
+    "index.js",
+    "index.ts",
+    "index.d.ts"
+  ],
+  "scripts": {
+    "build": "tsc",
+    "prepublish": "npm run build"
+  },
+  "keywords": [
+    "typescript",
+    "discriminated unions",
+    "assert",
+    "never"
+  ],
+  "repository": "aikoven/assert-never",
+  "author": "Daniel Lytkin <dan.lytkin@gmail.com>",
+  "license": "MIT",
+  "devDependencies": {
+    "typescript": "^2.2.1"
+  }
+}

node_modules/async/CHANGELOG.md

+# v3.2.4
+- Fix a bug in `priorityQueue` where it didn't wait for the result. (#1725)
+- Fix a bug where `unshiftAsync` was included in `priorityQueue`. (#1790)
+
+# v3.2.3
+- Fix bugs in comment parsing in `autoInject`. (#1767, #1780)
+
+# v3.2.2
+- Fix potential prototype pollution exploit
+
+# v3.2.1
+- Use `queueMicrotask` if available to the environment (#1761)
+- Minor perf improvement in `priorityQueue` (#1727)
+- More examples in documentation (#1726)
+- Various doc fixes (#1708, #1712, #1717, #1740, #1739, #1749, #1756)
+- Improved test coverage (#1754)
+
+# v3.2.0
+- Fix a bug in Safari related to overwriting `func.name`
+- Remove built-in browserify configuration (#1653)
+- Varios doc fixes (#1688, #1703, #1704)
+
+# v3.1.1
+- Allow redefining `name` property on wrapped functions.
+
+# v3.1.0
+
+- Added `q.pushAsync` and `q.unshiftAsync`, analagous to `q.push` and `q.unshift`, except they always do not accept a callback, and reject if processing the task errors. (#1659)
+- Promises returned from `q.push` and `q.unshift` when a callback is not passed now resolve even if an error ocurred. (#1659)
+- Fixed a parsing bug in `autoInject` with complicated function bodies (#1663)
+- Added ES6+ configuration for Browserify bundlers (#1653)
+- Various doc fixes (#1664, #1658, #1665, #1652)
+
+# v3.0.1
+
+## Bug fixes
+- Fixed a regression where arrays passed to `queue` and `cargo` would be completely flattened. (#1645)
+- Clarified Async's browser support (#1643)
+
+
+# v3.0.0
+
+The `async`/`await` release!
+
+There are a lot of new features and subtle breaking changes in this major version, but the biggest feature is that most Async methods return a Promise if you omit the callback, meaning you can `await` them from within an `async` function.
+
+```js
+const results = await async.mapLimit(urls, 5, async url => {
+    const resp = await fetch(url)
+    return resp.body
+})
+```
+
+## Breaking Changes
+- Most Async methods return a Promise when the final callback is omitted, making them `await`-able! (#1572)
+- We are now making heavy use of ES2015 features, this means we have dropped out-of-the-box support for Node 4 and earlier, and many old versions of browsers. (#1541, #1553)
+- In `queue`, `priorityQueue`, `cargo` and `cargoQueue`, the "event"-style methods, like `q.drain` and `q.saturated` are now methods that register a callback, rather than properties you assign a callback to.  They are now of the form `q.drain(callback)`.  If you do not pass a callback a Promise will be returned for the next occurrence of the event, making them `await`-able, e.g. `await q.drain()`.  (#1586, #1641)
+- Calling `callback(false)` will cancel an async method, preventing further iteration and callback calls.  This is useful for preventing memory leaks when you break out of an async flow by calling an outer callback. (#1064, #1542)
+- `during` and `doDuring` have been removed, and instead `whilst`, `doWhilst`, `until` and `doUntil` now have asynchronous `test` functions. (#850, #1557)
+- `limits` of less than 1 now cause an error to be thrown in queues and collection methods. (#1249, #1552)
+- `memoize` no longer memoizes errors (#1465, #1466)
+- `applyEach`/`applyEachSeries` have a simpler interface, to make them more easily type-able.  It always returns a function that takes in a single callback argument.  If that callback is omitted, a promise is returned, making it awaitable. (#1228, #1640)
+
+## New Features
+- Async generators are now supported in all the Collection methods. (#1560)
+- Added `cargoQueue`, a queue with both `concurrency` and `payload` size parameters. (#1567)
+- Queue objects returned from `queue` now have a `Symbol.iterator` method, meaning they can be iterated over to inspect the current list of items in the queue. (#1459, #1556)
+- A ESM-flavored `async.mjs` is included in the `async` package.  This is described in the `package.json` `"module"` field, meaning it should be automatically used by Webpack and other compatible bundlers.
+
+## Bug fixes
+- Better handle arbitrary error objects in `asyncify` (#1568, #1569)
+
+## Other
+- Removed Lodash as a dependency (#1283, #1528)
+- Miscellaneous docs fixes (#1393, #1501, #1540, #1543, #1558, #1563, #1564, #1579, #1581)
+- Miscellaneous test fixes (#1538)
+
+-------
+
+# v2.6.1
+- Updated lodash to prevent `npm audit` warnings. (#1532, #1533)
+- Made `async-es` more optimized for webpack users (#1517)
+- Fixed a stack overflow with large collections and a synchronous iterator (#1514)
+- Various small fixes/chores (#1505, #1511, #1527, #1530)
+
+# v2.6.0
+- Added missing aliases for many methods.  Previously, you could not (e.g.) `require('async/find')` or use `async.anyLimit`. (#1483)
+- Improved `queue` performance. (#1448, #1454)
+- Add missing sourcemap (#1452, #1453)
+- Various doc updates (#1448, #1471, #1483)
+
+# v2.5.0
+- Added `concatLimit`, the `Limit` equivalent of [`concat`](https://caolan.github.io/async/docs.html#concat) ([#1426](https://github.com/caolan/async/issues/1426), [#1430](https://github.com/caolan/async/pull/1430))
+- `concat` improvements: it now preserves order, handles falsy values and the `iteratee` callback takes a variable number of arguments ([#1437](https://github.com/caolan/async/issues/1437), [#1436](https://github.com/caolan/async/pull/1436))
+- Fixed an issue in `queue`  where there was a size discrepancy between `workersList().length` and `running()` ([#1428](https://github.com/caolan/async/issues/1428), [#1429](https://github.com/caolan/async/pull/1429))
+- Various doc fixes ([#1422](https://github.com/caolan/async/issues/1422), [#1424](https://github.com/caolan/async/pull/1424))
+
+# v2.4.1
+- Fixed a bug preventing functions wrapped  with `timeout()` from being re-used. ([#1418](https://github.com/caolan/async/issues/1418), [#1419](https://github.com/caolan/async/issues/1419))
+
+# v2.4.0
+- Added `tryEach`, for running async functions in parallel, where you only expect one to succeed. ([#1365](https://github.com/caolan/async/issues/1365), [#687](https://github.com/caolan/async/issues/687))
+- Improved performance, most notably in `parallel` and `waterfall` ([#1395](https://github.com/caolan/async/issues/1395))
+- Added `queue.remove()`, for removing items in a `queue` ([#1397](https://github.com/caolan/async/issues/1397), [#1391](https://github.com/caolan/async/issues/1391))
+- Fixed using `eval`, preventing Async from running in pages with Content Security Policy ([#1404](https://github.com/caolan/async/issues/1404), [#1403](https://github.com/caolan/async/issues/1403))
+- Fixed errors thrown in an `asyncify`ed function's callback being caught by the underlying Promise ([#1408](https://github.com/caolan/async/issues/1408))
+- Fixed timing of `queue.empty()` ([#1367](https://github.com/caolan/async/issues/1367))
+- Various doc fixes ([#1314](https://github.com/caolan/async/issues/1314), [#1394](https://github.com/caolan/async/issues/1394), [#1412](https://github.com/caolan/async/issues/1412))
+
+# v2.3.0
+- Added support for ES2017 `async` functions.  Wherever you can pass a Node-style/CPS function that uses a callback, you can also pass an `async` function.  Previously, you had to wrap `async` functions with `asyncify`.  The caveat is that it will only work if `async` functions are supported natively in your environment, transpiled implementations can't be detected.  ([#1386](https://github.com/caolan/async/issues/1386), [#1390](https://github.com/caolan/async/issues/1390))
+- Small doc fix ([#1392](https://github.com/caolan/async/issues/1392))
+
+# v2.2.0
+- Added `groupBy`, and the `Series`/`Limit` equivalents, analogous to [`_.groupBy`](http://lodash.com/docs#groupBy) ([#1364](https://github.com/caolan/async/issues/1364))
+- Fixed `transform` bug when `callback` was not passed ([#1381](https://github.com/caolan/async/issues/1381))
+- Added note about `reflect` to `parallel` docs ([#1385](https://github.com/caolan/async/issues/1385))
+
+# v2.1.5
+- Fix `auto` bug when function names collided with Array.prototype ([#1358](https://github.com/caolan/async/issues/1358))
+- Improve some error messages ([#1349](https://github.com/caolan/async/issues/1349))
+- Avoid stack overflow case in queue
+- Fixed an issue in `some`, `every` and `find` where processing would continue after the result was determined.
+- Cleanup implementations of `some`, `every` and `find`
+
+# v2.1.3
+- Make bundle size smaller
+- Create optimized hotpath for `filter` in array case.
+
+# v2.1.2
+- Fixed a stackoverflow bug with `detect`, `some`, `every` on large inputs ([#1293](https://github.com/caolan/async/issues/1293)).
+
+# v2.1.0
+
+- `retry` and `retryable` now support an optional `errorFilter` function that determines if the `task` should retry on the error ([#1256](https://github.com/caolan/async/issues/1256), [#1261](https://github.com/caolan/async/issues/1261))
+- Optimized array iteration in `race`, `cargo`, `queue`, and `priorityQueue` ([#1253](https://github.com/caolan/async/issues/1253))
+- Added alias documentation to doc site ([#1251](https://github.com/caolan/async/issues/1251), [#1254](https://github.com/caolan/async/issues/1254))
+- Added [BootStrap scrollspy](http://getbootstrap.com/javascript/#scrollspy) to docs to highlight in the sidebar the current method being viewed  ([#1289](https://github.com/caolan/async/issues/1289), [#1300](https://github.com/caolan/async/issues/1300))
+- Various minor doc fixes ([#1263](https://github.com/caolan/async/issues/1263), [#1264](https://github.com/caolan/async/issues/1264), [#1271](https://github.com/caolan/async/issues/1271), [#1278](https://github.com/caolan/async/issues/1278), [#1280](https://github.com/caolan/async/issues/1280), [#1282](https://github.com/caolan/async/issues/1282), [#1302](https://github.com/caolan/async/issues/1302))
+
+# v2.0.1
+
+- Significantly optimized all iteration based collection methods such as `each`, `map`, `filter`, etc ([#1245](https://github.com/caolan/async/issues/1245), [#1246](https://github.com/caolan/async/issues/1246), [#1247](https://github.com/caolan/async/issues/1247)).
+
+# v2.0.0
+
+Lots of changes here!
+
+First and foremost, we have a slick new [site for docs](https://caolan.github.io/async/). Special thanks to [**@hargasinski**](https://github.com/hargasinski) for his work converting our old docs to `jsdoc` format and implementing the new website. Also huge ups to [**@ivanseidel**](https://github.com/ivanseidel) for designing our new logo. It was a long process for both of these tasks, but I think these changes turned out extraordinary well.
+
+The biggest feature is modularization. You can now `require("async/series")` to only require the `series` function. Every Async library function is available this way. You still can `require("async")` to require the entire library, like you could do before.
+
+We also provide Async as a collection of ES2015 modules. You can now `import {each} from 'async-es'` or `import waterfall from 'async-es/waterfall'`. If you are using only a few Async functions, and are using a ES bundler such as Rollup, this can significantly lower your build size.
+
+Major thanks to [**@Kikobeats**](github.com/Kikobeats), [**@aearly**](github.com/aearly) and [**@megawac**](github.com/megawac) for doing the majority of the modularization work, as well as [**@jdalton**](github.com/jdalton) and [**@Rich-Harris**](github.com/Rich-Harris) for advisory work on the general modularization strategy.
+
+Another one of the general themes of the 2.0 release is standardization of what an "async" function is. We are now more strictly following the node-style continuation passing style. That is, an async function is a function that:
+
+1. Takes a variable number of arguments
+2. The last argument is always a callback
+3. The callback can accept any number of arguments
+4. The first argument passed to the callback will be treated as an error result, if the argument is truthy
+5. Any number of result arguments can be passed after the "error" argument
+6. The callback is called once and exactly once, either on the same tick or later tick of the JavaScript event loop.
+
+There were several cases where Async accepted some functions that did not strictly have these properties, most notably `auto`, `every`, `some`, `filter`, `reject` and `detect`.
+
+Another theme is performance. We have eliminated internal deferrals in all cases where they make sense. For example, in `waterfall` and `auto`, there was a `setImmediate` between each task -- these deferrals have been removed. A `setImmediate` call can add up to 1ms of delay. This might not seem like a lot, but it can add up if you are using many Async functions in the course of processing a HTTP request, for example. Nearly all asynchronous functions that do I/O already have some sort of deferral built in, so the extra deferral is unnecessary. The trade-off of this change is removing our built-in stack-overflow defense. Many synchronous callback calls in series can quickly overflow the JS call stack. If you do have a function that is sometimes synchronous (calling its callback on the same tick), and are running into stack overflows, wrap it with `async.ensureAsync()`.
+
+Another big performance win has been re-implementing `queue`, `cargo`, and `priorityQueue` with [doubly linked lists](https://en.wikipedia.org/wiki/Doubly_linked_list) instead of arrays. This has lead to queues being an order of [magnitude faster on large sets of tasks](https://github.com/caolan/async/pull/1205).
+
+## New Features
+
+- Async is now modularized. Individual functions can be `require()`d from the main package. (`require('async/auto')`) ([#984](https://github.com/caolan/async/issues/984), [#996](https://github.com/caolan/async/issues/996))
+- Async is also available as a collection of ES2015 modules in the new `async-es` package. (`import {forEachSeries} from 'async-es'`) ([#984](https://github.com/caolan/async/issues/984), [#996](https://github.com/caolan/async/issues/996))
+- Added `race`, analogous to `Promise.race()`. It will run an array of async tasks in parallel and will call its callback with the result of the first task to respond. ([#568](https://github.com/caolan/async/issues/568), [#1038](https://github.com/caolan/async/issues/1038))
+- Collection methods now accept ES2015 iterators.  Maps, Sets, and anything that implements the iterator spec can now be passed directly to `each`, `map`, `parallel`, etc.. ([#579](https://github.com/caolan/async/issues/579), [#839](https://github.com/caolan/async/issues/839), [#1074](https://github.com/caolan/async/issues/1074))
+- Added `mapValues`, for mapping over the properties of an object and returning an object with the same keys. ([#1157](https://github.com/caolan/async/issues/1157), [#1177](https://github.com/caolan/async/issues/1177))
+- Added `timeout`, a wrapper for an async function that will make the task time-out after the specified time. ([#1007](https://github.com/caolan/async/issues/1007), [#1027](https://github.com/caolan/async/issues/1027))
+- Added `reflect` and `reflectAll`, analagous to [`Promise.reflect()`](http://bluebirdjs.com/docs/api/reflect.html), a wrapper for async tasks that always succeeds, by gathering results and errors into an object.  ([#942](https://github.com/caolan/async/issues/942), [#1012](https://github.com/caolan/async/issues/1012), [#1095](https://github.com/caolan/async/issues/1095))
+- `constant` supports dynamic arguments -- it will now always use its last argument as the callback. ([#1016](https://github.com/caolan/async/issues/1016), [#1052](https://github.com/caolan/async/issues/1052))
+- `setImmediate` and `nextTick` now support arguments to partially apply to the deferred function, like the node-native versions do. ([#940](https://github.com/caolan/async/issues/940), [#1053](https://github.com/caolan/async/issues/1053))
+- `auto` now supports resolving cyclic dependencies using [Kahn's algorithm](https://en.wikipedia.org/wiki/Topological_sorting#Kahn.27s_algorithm) ([#1140](https://github.com/caolan/async/issues/1140)).
+- Added `autoInject`, a relative of `auto` that automatically spreads a task's dependencies as arguments to the task function. ([#608](https://github.com/caolan/async/issues/608), [#1055](https://github.com/caolan/async/issues/1055), [#1099](https://github.com/caolan/async/issues/1099), [#1100](https://github.com/caolan/async/issues/1100))
+- You can now limit the concurrency of `auto` tasks. ([#635](https://github.com/caolan/async/issues/635), [#637](https://github.com/caolan/async/issues/637))
+- Added `retryable`, a relative of `retry` that wraps an async function, making it retry when called. ([#1058](https://github.com/caolan/async/issues/1058))
+- `retry` now supports specifying a function that determines the next time interval, useful for exponential backoff, logging and other retry strategies. ([#1161](https://github.com/caolan/async/issues/1161))
+- `retry` will now pass all of the arguments the task function was resolved with to the callback ([#1231](https://github.com/caolan/async/issues/1231)).
+- Added `q.unsaturated` -- callback called when a `queue`'s number of running workers falls below a threshold. ([#868](https://github.com/caolan/async/issues/868), [#1030](https://github.com/caolan/async/issues/1030), [#1033](https://github.com/caolan/async/issues/1033), [#1034](https://github.com/caolan/async/issues/1034))
+- Added `q.error` -- a callback called whenever a `queue` task calls its callback with an error. ([#1170](https://github.com/caolan/async/issues/1170))
+- `applyEach` and `applyEachSeries` now pass results to the final callback. ([#1088](https://github.com/caolan/async/issues/1088))
+
+## Breaking changes
+
+- Calling a callback more than once is considered an error, and an error will be thrown. This had an explicit breaking change in `waterfall`. If you were relying on this behavior, you should more accurately represent your control flow as an event emitter or stream. ([#814](https://github.com/caolan/async/issues/814), [#815](https://github.com/caolan/async/issues/815), [#1048](https://github.com/caolan/async/issues/1048), [#1050](https://github.com/caolan/async/issues/1050))
+- `auto` task functions now always take the callback as the last argument. If a task has dependencies, the `results` object will be passed as the first argument. To migrate old task functions, wrap them with [`_.flip`](https://lodash.com/docs#flip) ([#1036](https://github.com/caolan/async/issues/1036), [#1042](https://github.com/caolan/async/issues/1042))
+- Internal `setImmediate` calls have been refactored away. This may make existing flows vulnerable to stack overflows if you use many synchronous functions in series. Use `ensureAsync` to work around this. ([#696](https://github.com/caolan/async/issues/696), [#704](https://github.com/caolan/async/issues/704), [#1049](https://github.com/caolan/async/issues/1049), [#1050](https://github.com/caolan/async/issues/1050))
+- `map` used to return an object when iterating over an object.  `map` now always returns an array, like in other libraries.  The previous object behavior has been split out into `mapValues`. ([#1157](https://github.com/caolan/async/issues/1157), [#1177](https://github.com/caolan/async/issues/1177))
+- `filter`, `reject`, `some`, `every`, `detect` and their families like `{METHOD}Series` and `{METHOD}Limit` now expect an error as the first callback argument, rather than just a simple boolean. Pass `null` as the first argument, or use `fs.access` instead of `fs.exists`. ([#118](https://github.com/caolan/async/issues/118), [#774](https://github.com/caolan/async/issues/774), [#1028](https://github.com/caolan/async/issues/1028), [#1041](https://github.com/caolan/async/issues/1041))
+- `{METHOD}` and `{METHOD}Series` are now implemented in terms of `{METHOD}Limit`. This is a major internal simplification, and is not expected to cause many problems, but it does subtly affect how functions execute internally. ([#778](https://github.com/caolan/async/issues/778), [#847](https://github.com/caolan/async/issues/847))
+- `retry`'s callback is now optional. Previously, omitting the callback would partially apply the function, meaning it could be passed directly as a task to `series` or `auto`. The partially applied "control-flow" behavior has been separated out into `retryable`. ([#1054](https://github.com/caolan/async/issues/1054), [#1058](https://github.com/caolan/async/issues/1058))
+- The test function for `whilst`, `until`, and `during` used to be passed non-error args from the iteratee function's callback, but this led to weirdness where the first call of the test function would be passed no args. We have made it so the test function is never passed extra arguments, and only the `doWhilst`, `doUntil`, and `doDuring` functions pass iteratee callback arguments to the test function ([#1217](https://github.com/caolan/async/issues/1217), [#1224](https://github.com/caolan/async/issues/1224))
+- The `q.tasks` array has been renamed `q._tasks` and is now implemented as a doubly linked list (DLL). Any code that used to interact with this array will need to be updated to either use the provided helpers or support DLLs ([#1205](https://github.com/caolan/async/issues/1205)).
+- The timing of the `q.saturated()` callback in a `queue` has been modified to better reflect when tasks pushed to the queue will start queueing. ([#724](https://github.com/caolan/async/issues/724), [#1078](https://github.com/caolan/async/issues/1078))
+- Removed `iterator` method in favour of [ES2015 iterator protocol](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Iterators_and_Generators ) which natively supports arrays ([#1237](https://github.com/caolan/async/issues/1237))
+- Dropped support for Component, Jam, SPM, and Volo ([#1175](https://github.com/caolan/async/issues/1175), #[#176](https://github.com/caolan/async/issues/176))
+
+## Bug Fixes
+
+- Improved handling of no dependency cases in `auto` & `autoInject` ([#1147](https://github.com/caolan/async/issues/1147)).
+- Fixed a bug where the callback generated by `asyncify` with  `Promises` could resolve twice ([#1197](https://github.com/caolan/async/issues/1197)).
+- Fixed several documented optional callbacks not actually being optional ([#1223](https://github.com/caolan/async/issues/1223)).
+
+## Other
+
+- Added `someSeries` and `everySeries` for symmetry, as well as a complete set of `any`/`anyLimit`/`anySeries` and `all`/`/allLmit`/`allSeries` aliases.
+- Added `find` as an alias for `detect. (as well as `findLimit` and `findSeries`).
+- Various doc fixes ([#1005](https://github.com/caolan/async/issues/1005), [#1008](https://github.com/caolan/async/issues/1008), [#1010](https://github.com/caolan/async/issues/1010), [#1015](https://github.com/caolan/async/issues/1015), [#1021](https://github.com/caolan/async/issues/1021), [#1037](https://github.com/caolan/async/issues/1037), [#1039](https://github.com/caolan/async/issues/1039), [#1051](https://github.com/caolan/async/issues/1051), [#1102](https://github.com/caolan/async/issues/1102), [#1107](https://github.com/caolan/async/issues/1107), [#1121](https://github.com/caolan/async/issues/1121), [#1123](https://github.com/caolan/async/issues/1123), [#1129](https://github.com/caolan/async/issues/1129), [#1135](https://github.com/caolan/async/issues/1135), [#1138](https://github.com/caolan/async/issues/1138), [#1141](https://github.com/caolan/async/issues/1141), [#1153](https://github.com/caolan/async/issues/1153), [#1216](https://github.com/caolan/async/issues/1216), [#1217](https://github.com/caolan/async/issues/1217), [#1232](https://github.com/caolan/async/issues/1232), [#1233](https://github.com/caolan/async/issues/1233), [#1236](https://github.com/caolan/async/issues/1236), [#1238](https://github.com/caolan/async/issues/1238))
+
+Thank you [**@aearly**](github.com/aearly) and [**@megawac**](github.com/megawac) for taking the lead on version 2 of async.
+
+------------------------------------------
+
+# v1.5.2
+- Allow using `"constructor"` as an argument in `memoize` ([#998](https://github.com/caolan/async/issues/998))
+- Give a better error messsage when `auto` dependency checking fails ([#994](https://github.com/caolan/async/issues/994))
+- Various doc updates ([#936](https://github.com/caolan/async/issues/936), [#956](https://github.com/caolan/async/issues/956), [#979](https://github.com/caolan/async/issues/979), [#1002](https://github.com/caolan/async/issues/1002))
+
+# v1.5.1
+- Fix issue with `pause` in `queue` with concurrency enabled ([#946](https://github.com/caolan/async/issues/946))
+- `while` and `until` now pass the final result to callback ([#963](https://github.com/caolan/async/issues/963))
+- `auto` will properly handle concurrency when there is no callback ([#966](https://github.com/caolan/async/issues/966))
+- `auto` will no. properly stop execution when an error occurs ([#988](https://github.com/caolan/async/issues/988), [#993](https://github.com/caolan/async/issues/993))
+- Various doc fixes ([#971](https://github.com/caolan/async/issues/971), [#980](https://github.com/caolan/async/issues/980))
+
+# v1.5.0
+
+- Added `transform`, analogous to [`_.transform`](http://lodash.com/docs#transform) ([#892](https://github.com/caolan/async/issues/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](https://github.com/caolan/async/issues/873))
+- `auto` now accepts an optional `concurrency` argument to limit the number o. running tasks ([#637](https://github.com/caolan/async/issues/637))
+- Added `queue#workersList()`, to retrieve the lis. of currently running tasks. ([#891](https://github.com/caolan/async/issues/891))
+- Various code simplifications ([#896](https://github.com/caolan/async/issues/896), [#904](https://github.com/caolan/async/issues/904))
+- Various doc fixes :scroll: ([#890](https://github.com/caolan/async/issues/890), [#894](https://github.com/caolan/async/issues/894), [#903](https://github.com/caolan/async/issues/903), [#905](https://github.com/caolan/async/issues/905), [#912](https://github.com/caolan/async/issues/912))
+
+# v1.4.2
+
+- Ensure coverage files don't get published on npm ([#879](https://github.com/caolan/async/issues/879))
+
+# v1.4.1
+
+- Add in overlooked `detectLimit` method ([#866](https://github.com/caolan/async/issues/866))
+- Removed unnecessary files from npm releases ([#861](https://github.com/caolan/async/issues/861))
+- Removed usage of a reserved word to prevent :boom: in older environments ([#870](https://github.com/caolan/async/issues/870))
+
+# v1.4.0
+
+- `asyncify` now supports promises ([#840](https://github.com/caolan/async/issues/840))
+- Added `Limit` versions of `filter` and `reject` ([#836](https://github.com/caolan/async/issues/836))
+- Add `Limit` versions of `detect`, `some` and `every` ([#828](https://github.com/caolan/async/issues/828), [#829](https://github.com/caolan/async/issues/829))
+- `some`, `every` and `detect` now short circuit early ([#828](https://github.com/caolan/async/issues/828), [#829](https://github.com/caolan/async/issues/829))
+- Improve detection of the global object ([#804](https://github.com/caolan/async/issues/804)), enabling use in WebWorkers
+- `whilst` now called with arguments from iterator ([#823](https://github.com/caolan/async/issues/823))
+- `during` now gets called with arguments from iterator ([#824](https://github.com/caolan/async/issues/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](https://github.com/caolan/async/issues/671), [#806](https://github.com/caolan/async/issues/806))
+- Added `during` and `doDuring`, which are like `whilst` with an async truth test. ([#800](https://github.com/caolan/async/issues/800))
+- `retry` now accepts an `interval` parameter to specify a delay between retries. ([#793](https://github.com/caolan/async/issues/793))
+- `async` should work better in Web Workers due to better `root` detection ([#804](https://github.com/caolan/async/issues/804))
+- Callbacks are now optional in `whilst`, `doWhilst`, `until`, and `doUntil` ([#642](https://github.com/caolan/async/issues/642))
+- Various internal updates ([#786](https://github.com/caolan/async/issues/786), [#801](https://github.com/caolan/async/issues/801), [#802](https://github.com/caolan/async/issues/802), [#803](https://github.com/caolan/async/issues/803))
+- Various doc fixes ([#790](https://github.com/caolan/async/issues/790), [#794](https://github.com/caolan/async/issues/794))
+
+Bug Fixes:
+- `cargo` now exposes the `payload` size, and `cargo.payload` can be changed on the fly after the `cargo` is created. ([#740](https://github.com/caolan/async/issues/740), [#744](https://github.com/caolan/async/issues/744), [#783](https://github.com/caolan/async/issues/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](https://github.com/caolan/async/issues/782))
+
+
+# v1.2.0
+
+New Features:
+
+- Added `timesLimit` ([#743](https://github.com/caolan/async/issues/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](https://github.com/caolan/async/issues/747), [#772](https://github.com/caolan/async/issues/772))
+
+Bug Fixes:
+
+- Fixed a regression in `each` and family with empty arrays that have additional properties. ([#775](https://github.com/caolan/async/issues/775), [#777](https://github.com/caolan/async/issues/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](https://github.com/caolan/async/issues/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](https://github.com/caolan/async/issues/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](https://github.com/caolan/async/issues/667)).
+- The callback is now optional for the composed results of `compose` and `seq`. ([#618](https://github.com/caolan/async/issues/618))
+- Reduced file size by 4kb, (minified version by 1kb)
+- Added code coverage through `nyc` and `coveralls` ([#768](https://github.com/caolan/async/issues/768))
+
+Bug Fixes:
+
+- `forever` will no longer stack overflow with a synchronous iterator ([#622](https://github.com/caolan/async/issues/622))
+- `eachLimit` and other limit functions will stop iterating once an error occurs ([#754](https://github.com/caolan/async/issues/754))
+- Always pass `null` in callbacks when there is no error ([#439](https://github.com/caolan/async/issues/439))
+- Ensure proper conditions when calling `drain()` after pushing an empty data set to a queue ([#668](https://github.com/caolan/async/issues/668))
+- `each` and family will properly handle an empty array ([#578](https://github.com/caolan/async/issues/578))
+- `eachSeries` and family will finish if the underlying array is modified during execution ([#557](https://github.com/caolan/async/issues/557))
+- `queue` will throw if a non-function is passed to `q.push()` ([#593](https://github.com/caolan/async/issues/593))
+- Doc fixes ([#629](https://github.com/caolan/async/issues/629), [#766](https://github.com/caolan/async/issues/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](https://github.com/caolan/async/issues/168) [#704](https://github.com/caolan/async/issues/704) [#321](https://github.com/caolan/async/issues/321))
+- Detect deadlocks in `auto` ([#663](https://github.com/caolan/async/issues/663))
+- Better support for require.js ([#527](https://github.com/caolan/async/issues/527))
+- Throw if queue created with concurrency `0` ([#714](https://github.com/caolan/async/issues/714))
+- Fix unneeded iteration in `queue.resume()` ([#758](https://github.com/caolan/async/issues/758))
+- Guard against timer mocking overriding `setImmediate` ([#609](https://github.com/caolan/async/issues/609) [#611](https://github.com/caolan/async/issues/611))
+- Miscellaneous doc fixes ([#542](https://github.com/caolan/async/issues/542) [#596](https://github.com/caolan/async/issues/596) [#615](https://github.com/caolan/async/issues/615) [#628](https://github.com/caolan/async/issues/628) [#631](https://github.com/caolan/async/issues/631) [#690](https://github.com/caolan/async/issues/690) [#729](https://github.com/caolan/async/issues/729))
+- Use single noop function internally ([#546](https://github.com/caolan/async/issues/546))
+- Optimize internal `_each`, `_map` and `_keys` functions.

node_modules/async/LICENSE

+Copyright (c) 2010-2018 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.

node_modules/async/README.md

+![Async Logo](https://raw.githubusercontent.com/caolan/async/master/logo/async-logo_readme.jpg)
+
+![Github Actions CI status](https://github.com/caolan/async/actions/workflows/ci.yml/badge.svg)
+[![NPM version](https://img.shields.io/npm/v/async.svg)](https://www.npmjs.com/package/async)
+[![Coverage Status](https://coveralls.io/repos/caolan/async/badge.svg?branch=master)](https://coveralls.io/r/caolan/async?branch=master)
+[![Join the chat at https://gitter.im/caolan/async](https://badges.gitter.im/Join%20Chat.svg)](https://gitter.im/caolan/async?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+[![jsDelivr Hits](https://data.jsdelivr.com/v1/package/npm/async/badge?style=rounded)](https://www.jsdelivr.com/package/npm/async)
+
+<!--
+|Linux|Windows|MacOS|
+|-|-|-|
+|[![Linux Build Status](https://dev.azure.com/caolanmcmahon/async/_apis/build/status/caolan.async?branchName=master&jobName=Linux&configuration=Linux%20node_10_x)](https://dev.azure.com/caolanmcmahon/async/_build/latest?definitionId=1&branchName=master) | [![Windows Build Status](https://dev.azure.com/caolanmcmahon/async/_apis/build/status/caolan.async?branchName=master&jobName=Windows&configuration=Windows%20node_10_x)](https://dev.azure.com/caolanmcmahon/async/_build/latest?definitionId=1&branchName=master) | [![MacOS Build Status](https://dev.azure.com/caolanmcmahon/async/_apis/build/status/caolan.async?branchName=master&jobName=OSX&configuration=OSX%20node_10_x)](https://dev.azure.com/caolanmcmahon/async/_build/latest?definitionId=1&branchName=master)| -->
+
+Async is a utility module which provides straight-forward, powerful functions for working with [asynchronous JavaScript](http://caolan.github.io/async/v3/global.html). Although originally designed for use with [Node.js](https://nodejs.org/) and installable via `npm i async`, it can also be used directly in the browser.  A ESM/MJS version is included in the main `async` package that should automatically be used with compatible bundlers such as Webpack and Rollup.
+
+A pure ESM version of Async is available as [`async-es`](https://www.npmjs.com/package/async-es).
+
+For Documentation, visit <https://caolan.github.io/async/>
+
+*For Async v1.5.x documentation, go [HERE](https://github.com/caolan/async/blob/v1.5.2/README.md)*
+
+
+```javascript
+// for use with Node-style callbacks...
+var async = require("async");
+
+var obj = {dev: "/dev.json", test: "/test.json", prod: "/prod.json"};
+var configs = {};
+
+async.forEachOf(obj, (value, key, callback) => {
+    fs.readFile(__dirname + value, "utf8", (err, data) => {
+        if (err) return callback(err);
+        try {
+            configs[key] = JSON.parse(data);
+        } catch (e) {
+            return callback(e);
+        }
+        callback();
+    });
+}, err => {
+    if (err) console.error(err.message);
+    // configs is now a map of JSON data
+    doSomethingWith(configs);
+});
+```
+
+```javascript
+var async = require("async");
+
+// ...or ES2017 async functions
+async.mapLimit(urls, 5, async function(url) {
+    const response = await fetch(url)
+    return response.body
+}, (err, results) => {
+    if (err) throw err
+    // results is now an array of the response bodies
+    console.log(results)
+})
+```

node_modules/async/all.js

+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+var _createTester = require('./internal/createTester.js');
+
+var _createTester2 = _interopRequireDefault(_createTester);
+
+var _eachOf = require('./eachOf.js');
+
+var _eachOf2 = _interopRequireDefault(_eachOf);
+
+var _awaitify = require('./internal/awaitify.js');
+
+var _awaitify2 = _interopRequireDefault(_awaitify);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * Returns `true` if every element in `coll` satisfies an async test. If any
+ * iteratee call returns `false`, the main `callback` is immediately called.
+ *
+ * @name every
+ * @static
+ * @memberOf module:Collections
+ * @method
+ * @alias all
+ * @category Collection
+ * @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
+ * @param {AsyncFunction} iteratee - An async truth test to apply to each item
+ * in the collection in parallel.
+ * The iteratee must complete with a boolean result value.
+ * Invoked with (item, callback).
+ * @param {Function} [callback] - A callback which is called after all the
+ * `iteratee` functions have finished. Result will be either `true` or `false`
+ * depending on the values of the async tests. Invoked with (err, result).
+ * @returns {Promise} a promise, if no callback provided
+ * @example
+ *
+ * // dir1 is a directory that contains file1.txt, file2.txt
+ * // dir2 is a directory that contains file3.txt, file4.txt
+ * // dir3 is a directory that contains file5.txt
+ * // dir4 does not exist
+ *
+ * const fileList = ['dir1/file1.txt','dir2/file3.txt','dir3/file5.txt'];
+ * const withMissingFileList = ['file1.txt','file2.txt','file4.txt'];
+ *
+ * // asynchronous function that checks if a file exists
+ * function fileExists(file, callback) {
+ *    fs.access(file, fs.constants.F_OK, (err) => {
+ *        callback(null, !err);
+ *    });
+ * }
+ *
+ * // Using callbacks
+ * async.every(fileList, fileExists, function(err, result) {
+ *     console.log(result);
+ *     // true
+ *     // result is true since every file exists
+ * });
+ *
+ * async.every(withMissingFileList, fileExists, function(err, result) {
+ *     console.log(result);
+ *     // false
+ *     // result is false since NOT every file exists
+ * });
+ *
+ * // Using Promises
+ * async.every(fileList, fileExists)
+ * .then( result => {
+ *     console.log(result);
+ *     // true
+ *     // result is true since every file exists
+ * }).catch( err => {
+ *     console.log(err);
+ * });
+ *
+ * async.every(withMissingFileList, fileExists)
+ * .then( result => {
+ *     console.log(result);
+ *     // false
+ *     // result is false since NOT every file exists
+ * }).catch( err => {
+ *     console.log(err);
+ * });
+ *
+ * // Using async/await
+ * async () => {
+ *     try {
+ *         let result = await async.every(fileList, fileExists);
+ *         console.log(result);
+ *         // true
+ *         // result is true since every file exists
+ *     }
+ *     catch (err) {
+ *         console.log(err);
+ *     }
+ * }
+ *
+ * async () => {
+ *     try {
+ *         let result = await async.every(withMissingFileList, fileExists);
+ *         console.log(result);
+ *         // false
+ *         // result is false since NOT every file exists
+ *     }
+ *     catch (err) {
+ *         console.log(err);
+ *     }
+ * }
+ *
+ */
+function every(coll, iteratee, callback) {
+  return (0, _createTester2.default)(bool => !bool, res => !res)(_eachOf2.default, coll, iteratee, callback);
+}
+exports.default = (0, _awaitify2.default)(every, 3);
+module.exports = exports['default'];
\ No newline at end of file

node_modules/async/allLimit.js

+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+var _createTester = require('./internal/createTester.js');
+
+var _createTester2 = _interopRequireDefault(_createTester);
+
+var _eachOfLimit = require('./internal/eachOfLimit.js');
+
+var _eachOfLimit2 = _interopRequireDefault(_eachOfLimit);
+
+var _awaitify = require('./internal/awaitify.js');
+
+var _awaitify2 = _interopRequireDefault(_awaitify);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * The same as [`every`]{@link module:Collections.every} but runs a maximum of `limit` async operations at a time.
+ *
+ * @name everyLimit
+ * @static
+ * @memberOf module:Collections
+ * @method
+ * @see [async.every]{@link module:Collections.every}
+ * @alias allLimit
+ * @category Collection
+ * @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
+ * @param {number} limit - The maximum number of async operations at a time.
+ * @param {AsyncFunction} iteratee - An async truth test to apply to each item
+ * in the collection in parallel.
+ * The iteratee must complete with a boolean result value.
+ * Invoked with (item, callback).
+ * @param {Function} [callback] - A callback which is called after all the
+ * `iteratee` functions have finished. Result will be either `true` or `false`
+ * depending on the values of the async tests. Invoked with (err, result).
+ * @returns {Promise} a promise, if no callback provided
+ */
+function everyLimit(coll, limit, iteratee, callback) {
+  return (0, _createTester2.default)(bool => !bool, res => !res)((0, _eachOfLimit2.default)(limit), coll, iteratee, callback);
+}
+exports.default = (0, _awaitify2.default)(everyLimit, 4);
+module.exports = exports['default'];
\ No newline at end of file

node_modules/async/allSeries.js

+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+var _createTester = require('./internal/createTester.js');
+
+var _createTester2 = _interopRequireDefault(_createTester);
+
+var _eachOfSeries = require('./eachOfSeries.js');
+
+var _eachOfSeries2 = _interopRequireDefault(_eachOfSeries);
+
+var _awaitify = require('./internal/awaitify.js');
+
+var _awaitify2 = _interopRequireDefault(_awaitify);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * The same as [`every`]{@link module:Collections.every} but runs only a single async operation at a time.
+ *
+ * @name everySeries
+ * @static
+ * @memberOf module:Collections
+ * @method
+ * @see [async.every]{@link module:Collections.every}
+ * @alias allSeries
+ * @category Collection
+ * @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
+ * @param {AsyncFunction} iteratee - An async truth test to apply to each item
+ * in the collection in series.
+ * The iteratee must complete with a boolean result value.
+ * Invoked with (item, callback).
+ * @param {Function} [callback] - A callback which is called after all the
+ * `iteratee` functions have finished. Result will be either `true` or `false`
+ * depending on the values of the async tests. Invoked with (err, result).
+ * @returns {Promise} a promise, if no callback provided
+ */
+function everySeries(coll, iteratee, callback) {
+  return (0, _createTester2.default)(bool => !bool, res => !res)(_eachOfSeries2.default, coll, iteratee, callback);
+}
+exports.default = (0, _awaitify2.default)(everySeries, 3);
+module.exports = exports['default'];
\ No newline at end of file

node_modules/async/any.js

+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+var _createTester = require('./internal/createTester.js');
+
+var _createTester2 = _interopRequireDefault(_createTester);
+
+var _eachOf = require('./eachOf.js');
+
+var _eachOf2 = _interopRequireDefault(_eachOf);
+
+var _awaitify = require('./internal/awaitify.js');
+
+var _awaitify2 = _interopRequireDefault(_awaitify);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * Returns `true` if at least one element in the `coll` satisfies an async test.
+ * If any iteratee call returns `true`, the main `callback` is immediately
+ * called.
+ *
+ * @name some
+ * @static
+ * @memberOf module:Collections
+ * @method
+ * @alias any
+ * @category Collection
+ * @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
+ * @param {AsyncFunction} iteratee - An async truth test to apply to each item
+ * in the collections in parallel.
+ * The iteratee should complete with a boolean `result` value.
+ * Invoked with (item, callback).
+ * @param {Function} [callback] - A callback which is called as soon as any
+ * iteratee returns `true`, or after all the iteratee functions have finished.
+ * Result will be either `true` or `false` depending on the values of the async
+ * tests. Invoked with (err, result).
+ * @returns {Promise} a promise, if no callback provided
+ * @example
+ *
+ * // dir1 is a directory that contains file1.txt, file2.txt
+ * // dir2 is a directory that contains file3.txt, file4.txt
+ * // dir3 is a directory that contains file5.txt
+ * // dir4 does not exist
+ *
+ * // asynchronous function that checks if a file exists
+ * function fileExists(file, callback) {
+ *    fs.access(file, fs.constants.F_OK, (err) => {
+ *        callback(null, !err);
+ *    });
+ * }
+ *
+ * // Using callbacks
+ * async.some(['dir1/missing.txt','dir2/missing.txt','dir3/file5.txt'], fileExists,
+ *    function(err, result) {
+ *        console.log(result);
+ *        // true
+ *        // result is true since some file in the list exists
+ *    }
+ *);
+ *
+ * async.some(['dir1/missing.txt','dir2/missing.txt','dir4/missing.txt'], fileExists,
+ *    function(err, result) {
+ *        console.log(result);
+ *        // false
+ *        // result is false since none of the files exists
+ *    }
+ *);
+ *
+ * // Using Promises
+ * async.some(['dir1/missing.txt','dir2/missing.txt','dir3/file5.txt'], fileExists)
+ * .then( result => {
+ *     console.log(result);
+ *     // true
+ *     // result is true since some file in the list exists
+ * }).catch( err => {
+ *     console.log(err);
+ * });
+ *
+ * async.some(['dir1/missing.txt','dir2/missing.txt','dir4/missing.txt'], fileExists)
+ * .then( result => {
+ *     console.log(result);
+ *     // false
+ *     // result is false since none of the files exists
+ * }).catch( err => {
+ *     console.log(err);
+ * });
+ *
+ * // Using async/await
+ * async () => {
+ *     try {
+ *         let result = await async.some(['dir1/missing.txt','dir2/missing.txt','dir3/file5.txt'], fileExists);
+ *         console.log(result);
+ *         // true
+ *         // result is true since some file in the list exists
+ *     }
+ *     catch (err) {
+ *         console.log(err);
+ *     }
+ * }
+ *
+ * async () => {
+ *     try {
+ *         let result = await async.some(['dir1/missing.txt','dir2/missing.txt','dir4/missing.txt'], fileExists);
+ *         console.log(result);
+ *         // false
+ *         // result is false since none of the files exists
+ *     }
+ *     catch (err) {
+ *         console.log(err);
+ *     }
+ * }
+ *
+ */
+function some(coll, iteratee, callback) {
+  return (0, _createTester2.default)(Boolean, res => res)(_eachOf2.default, coll, iteratee, callback);
+}
+exports.default = (0, _awaitify2.default)(some, 3);
+module.exports = exports['default'];
\ No newline at end of file

node_modules/async/anyLimit.js

+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+var _createTester = require('./internal/createTester.js');
+
+var _createTester2 = _interopRequireDefault(_createTester);
+
+var _eachOfLimit = require('./internal/eachOfLimit.js');
+
+var _eachOfLimit2 = _interopRequireDefault(_eachOfLimit);
+
+var _awaitify = require('./internal/awaitify.js');
+
+var _awaitify2 = _interopRequireDefault(_awaitify);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * The same as [`some`]{@link module:Collections.some} but runs a maximum of `limit` async operations at a time.
+ *
+ * @name someLimit
+ * @static
+ * @memberOf module:Collections
+ * @method
+ * @see [async.some]{@link module:Collections.some}
+ * @alias anyLimit
+ * @category Collection
+ * @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
+ * @param {number} limit - The maximum number of async operations at a time.
+ * @param {AsyncFunction} iteratee - An async truth test to apply to each item
+ * in the collections in parallel.
+ * The iteratee should complete with a boolean `result` value.
+ * Invoked with (item, callback).
+ * @param {Function} [callback] - A callback which is called as soon as any
+ * iteratee returns `true`, or after all the iteratee functions have finished.
+ * Result will be either `true` or `false` depending on the values of the async
+ * tests. Invoked with (err, result).
+ * @returns {Promise} a promise, if no callback provided
+ */
+function someLimit(coll, limit, iteratee, callback) {
+  return (0, _createTester2.default)(Boolean, res => res)((0, _eachOfLimit2.default)(limit), coll, iteratee, callback);
+}
+exports.default = (0, _awaitify2.default)(someLimit, 4);
+module.exports = exports['default'];
\ No newline at end of file

node_modules/async/anySeries.js

+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+var _createTester = require('./internal/createTester.js');
+
+var _createTester2 = _interopRequireDefault(_createTester);
+
+var _eachOfSeries = require('./eachOfSeries.js');
+
+var _eachOfSeries2 = _interopRequireDefault(_eachOfSeries);
+
+var _awaitify = require('./internal/awaitify.js');
+
+var _awaitify2 = _interopRequireDefault(_awaitify);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * The same as [`some`]{@link module:Collections.some} but runs only a single async operation at a time.
+ *
+ * @name someSeries
+ * @static
+ * @memberOf module:Collections
+ * @method
+ * @see [async.some]{@link module:Collections.some}
+ * @alias anySeries
+ * @category Collection
+ * @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
+ * @param {AsyncFunction} iteratee - An async truth test to apply to each item
+ * in the collections in series.
+ * The iteratee should complete with a boolean `result` value.
+ * Invoked with (item, callback).
+ * @param {Function} [callback] - A callback which is called as soon as any
+ * iteratee returns `true`, or after all the iteratee functions have finished.
+ * Result will be either `true` or `false` depending on the values of the async
+ * tests. Invoked with (err, result).
+ * @returns {Promise} a promise, if no callback provided
+ */
+function someSeries(coll, iteratee, callback) {
+  return (0, _createTester2.default)(Boolean, res => res)(_eachOfSeries2.default, coll, iteratee, callback);
+}
+exports.default = (0, _awaitify2.default)(someSeries, 3);
+module.exports = exports['default'];
\ No newline at end of file

node_modules/async/apply.js

+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+exports.default = function (fn, ...args) {
+  return (...callArgs) => fn(...args, ...callArgs);
+};
+
+module.exports = exports["default"]; /**
+                                      * 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.
+                                      *
+                                      * @name apply
+                                      * @static
+                                      * @memberOf module:Utils
+                                      * @method
+                                      * @category Util
+                                      * @param {Function} fn - The function you want to eventually apply all
+                                      * arguments to. Invokes with (arguments...).
+                                      * @param {...*} arguments... - Any number of arguments to automatically apply
+                                      * when the continuation is called.
+                                      * @returns {Function} the partially-applied function
+                                      * @example
+                                      *
+                                      * // 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:
+                                      *
+                                      * node> var fn = async.apply(sys.puts, 'one');
+                                      * node> fn('two', 'three');
+                                      * one
+                                      * two
+                                      * three
+                                      */
\ No newline at end of file

node_modules/async/applyEach.js

+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+var _applyEach = require('./internal/applyEach.js');
+
+var _applyEach2 = _interopRequireDefault(_applyEach);
+
+var _map = require('./map.js');
+
+var _map2 = _interopRequireDefault(_map);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * Applies the provided arguments to each function in the array, calling
+ * `callback` after all functions have completed. If you only provide the first
+ * argument, `fns`, then it will return a function which lets you pass in the
+ * arguments as if it were a single function call. If more arguments are
+ * provided, `callback` is required while `args` is still optional. The results
+ * for each of the applied async functions are passed to the final callback
+ * as an array.
+ *
+ * @name applyEach
+ * @static
+ * @memberOf module:ControlFlow
+ * @method
+ * @category Control Flow
+ * @param {Array|Iterable|AsyncIterable|Object} fns - A collection of {@link AsyncFunction}s
+ * to all call with the same arguments
+ * @param {...*} [args] - any number of separate arguments to pass to the
+ * function.
+ * @param {Function} [callback] - the final argument should be the callback,
+ * called when all functions have completed processing.
+ * @returns {AsyncFunction} - Returns a function that takes no args other than
+ * an optional callback, that is the result of applying the `args` to each
+ * of the functions.
+ * @example
+ *
+ * const appliedFn = async.applyEach([enableSearch, updateSchema], 'bucket')
+ *
+ * appliedFn((err, results) => {
+ *     // results[0] is the results for `enableSearch`
+ *     // results[1] is the results for `updateSchema`
+ * });
+ *
+ * // partial application example:
+ * async.each(
+ *     buckets,
+ *     async (bucket) => async.applyEach([enableSearch, updateSchema], bucket)(),
+ *     callback
+ * );
+ */
+exports.default = (0, _applyEach2.default)(_map2.default);
+module.exports = exports['default'];
\ No newline at end of file

node_modules/async/applyEachSeries.js

+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+});
+
+var _applyEach = require('./internal/applyEach.js');
+
+var _applyEach2 = _interopRequireDefault(_applyEach);
+
+var _mapSeries = require('./mapSeries.js');
+
+var _mapSeries2 = _interopRequireDefault(_mapSeries);
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * The same as [`applyEach`]{@link module:ControlFlow.applyEach} but runs only a single async operation at a time.
+ *
+ * @name applyEachSeries
+ * @static
+ * @memberOf module:ControlFlow
+ * @method
+ * @see [async.applyEach]{@link module:ControlFlow.applyEach}
+ * @category Control Flow
+ * @param {Array|Iterable|AsyncIterable|Object} fns - A collection of {@link AsyncFunction}s to all
+ * call with the same arguments
+ * @param {...*} [args] - any number of separate arguments to pass to the
+ * function.
+ * @param {Function} [callback] - the final argument should be the callback,
+ * called when all functions have completed processing.
+ * @returns {AsyncFunction} - A function, that when called, is the result of
+ * appling the `args` to the list of functions.  It takes no args, other than
+ * a callback.
+ */
+exports.default = (0, _applyEach2.default)(_mapSeries2.default);
+module.exports = exports['default'];
\ No newline at end of file

node_modules/async/asyncify.js

+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+exports.default = asyncify;
+
+var _initialParams = require('./internal/initialParams.js');
+
+var _initialParams2 = _interopRequireDefault(_initialParams);
+
+var _setImmediate = require('./internal/setImmediate.js');
+
+var _setImmediate2 = _interopRequireDefault(_setImmediate);
+
+var _wrapAsync = require('./internal/wrapAsync.js');
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * 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.
+ *
+ * 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.
+ *
+ * This also means you can asyncify ES2017 `async` functions.
+ *
+ * @name asyncify
+ * @static
+ * @memberOf module:Utils
+ * @method
+ * @alias wrapSync
+ * @category Util
+ * @param {Function} func - The synchronous function, or Promise-returning
+ * function to convert to an {@link AsyncFunction}.
+ * @returns {AsyncFunction} An asynchronous wrapper of the `func`. To be
+ * invoked with `(args..., callback)`.
+ * @example
+ *
+ * // passing a regular synchronous function
+ * 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);
+ *
+ * // passing a function returning a promise
+ * 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);
+ *
+ * // es2017 example, though `asyncify` is not needed if your JS environment
+ * // supports async functions out of the box
+ * var q = async.queue(async.asyncify(async function(file) {
+ *     var intermediateStep = await processFile(file);
+ *     return await somePromise(intermediateStep)
+ * }));
+ *
+ * q.push(files);
+ */
+function asyncify(func) {
+    if ((0, _wrapAsync.isAsync)(func)) {
+        return function (...args /*, callback*/) {
+            const callback = args.pop();
+            const promise = func.apply(this, args);
+            return handlePromise(promise, callback);
+        };
+    }
+
+    return (0, _initialParams2.default)(function (args, callback) {
+        var result;
+        try {
+            result = func.apply(this, args);
+        } catch (e) {
+            return callback(e);
+        }
+        // if result is Promise object
+        if (result && typeof result.then === 'function') {
+            return handlePromise(result, callback);
+        } else {
+            callback(null, result);
+        }
+    });
+}
+
+function handlePromise(promise, callback) {
+    return promise.then(value => {
+        invokeCallback(callback, null, value);
+    }, err => {
+        invokeCallback(callback, err && err.message ? err : new Error(err));
+    });
+}
+
+function invokeCallback(callback, error, value) {
+    try {
+        callback(error, value);
+    } catch (err) {
+        (0, _setImmediate2.default)(e => {
+            throw e;
+        }, err);
+    }
+}
+module.exports = exports['default'];
\ No newline at end of file

node_modules/async/auto.js

+'use strict';
+
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+exports.default = auto;
+
+var _once = require('./internal/once.js');
+
+var _once2 = _interopRequireDefault(_once);
+
+var _onlyOnce = require('./internal/onlyOnce.js');
+
+var _onlyOnce2 = _interopRequireDefault(_onlyOnce);
+
+var _wrapAsync = require('./internal/wrapAsync.js');
+
+var _wrapAsync2 = _interopRequireDefault(_wrapAsync);
+
+var _promiseCallback = require('./internal/promiseCallback.js');
+
+function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
+
+/**
+ * Determines the best order for running the {@link AsyncFunction}s 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 {@link AsyncFunction}s 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.
+ *
+ * {@link AsyncFunction}s also receive an object containing the results of functions which
+ * have completed so far as the first argument, if they have dependencies. If a
+ * task function has no dependencies, it will only be passed a callback.
+ *
+ * @name auto
+ * @static
+ * @memberOf module:ControlFlow
+ * @method
+ * @category Control Flow
+ * @param {Object} tasks - An object. Each of its properties is either a
+ * function or an array of requirements, with the {@link AsyncFunction} 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 one or two arguments:
+ * * a `results` object, containing the results of the previously executed
+ *   functions, only passed if the task has any dependencies,
+ * * a `callback(err, result)` function, which must be called when finished,
+ *   passing an `error` (which can be `null`) and the result of the function's
+ *   execution.
+ * @param {number} [concurrency=Infinity] - An optional `integer` for
+ * determining the maximum number of tasks that can be run in parallel. By
+ * default, as many as possible.
+ * @param {Function} [callback] - 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. Invoked with (err, results).
+ * @returns {Promise} a promise, if a callback is not passed
+ * @example
+ *
+ * //Using Callbacks
+ * async.auto({
+ *     get_data: function(callback) {
+ *         // async code to get some data
+ *         callback(null, 'data', 'converted to array');
+ *     },
+ *     make_folder: function(callback) {
+ *         // 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(results, callback) {
+ *         // 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(results, callback) {
+ *         // once the file is written let's email a link to it...
+ *         callback(null, {'file':results.write_file, 'email':'user@example.com'});
+ *     }]
+ * }, function(err, results) {
+ *     if (err) {
+ *         console.log('err = ', err);
+ *     }
+ *     console.log('results = ', results);
+ *     // results = {
+ *     //     get_data: ['data', 'converted to array']
+ *     //     make_folder; 'folder',
+ *     //     write_file: 'filename'
+ *     //     email_link: { file: 'filename', email: 'user@example.com' }
+ *     // }
+ * });
+ *
+ * //Using Promises
+ * 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(results, callback) {
+ *         // 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(results, callback) {
+ *         // once the file is written let's email a link to it...
+ *         callback(null, {'file':results.write_file, 'email':'user@example.com'});
+ *     }]
+ * }).then(results => {
+ *     console.log('results = ', results);
+ *     // results = {
+ *     //     get_data: ['data', 'converted to array']
+ *     //     make_folder; 'folder',
+ *     //     write_file: 'filename'
+ *     //     email_link: { file: 'filename', email: 'user@example.com' }
+ *     // }
+ * }).catch(err => {
+ *     console.log('err = ', err);
+ * });
+ *
+ * //Using async/await
+ * async () => {
+ *     try {
+ *         let results = await async.auto({
+ *             get_data: function(callback) {
+ *                 // async code to get some data
+ *                 callback(null, 'data', 'converted to array');
+ *             },
+ *             make_folder: function(callback) {
+ *                 // 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(results, callback) {
+ *                 // 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(results, callback) {
+ *                 // once the file is written let's email a link to it...
+ *                 callback(null, {'file':results.write_file, 'email':'user@example.com'});
+ *             }]
+ *         });
+ *         console.log('results = ', results);
+ *         // results = {
+ *         //     get_data: ['data', 'converted to array']
+ *         //     make_folder; 'folder',
+ *         //     write_file: 'filename'
+ *         //     email_link: { file: 'filename', email: 'user@example.com' }
+ *         // }
+ *     }
+ *     catch (err) {
+ *         console.log(err);
+ *     }
+ * }
+ *
+ */
+function auto(tasks, concurrency, callback) {
+    if (typeof concurrency !== 'number') {
+        // concurrency is optional, shift the args.
+        callback = concurrency;
+        concurrency = null;
+    }
+    callback = (0, _once2.default)(callback || (0, _promiseCallback.promiseCallback)());
+    var numTasks = Object.keys(tasks).length;
+    if (!numTasks) {
+        return callback(null);
+    }
+    if (!concurrency) {
+        concurrency = numTasks;
+    }
+
+    var results = {};
+    var runningTasks = 0;
+    var canceled = false;
+    var hasError = false;
+
+    var listeners = Object.create(null);
+
+    var readyTasks = [];
+
+    // for cycle detection:
+    var readyToCheck = []; // tasks that have been identified as reachable
+    // without the possibility of returning to an ancestor task
+    var uncheckedDependencies = {};
+
+    Object.keys(tasks).forEach(key => {
+        var task = tasks[key];
+        if (!Array.isArray(task)) {
+            // no dependencies
+            enqueueTask(key, [task]);
+            readyToCheck.push(key);
+            return;
+        }
+
+        var dependencies = task.slice(0, task.length - 1);
+        var remainingDependencies = dependencies.length;
+        if (remainingDependencies === 0) {
+            enqueueTask(key, task);
+            readyToCheck.push(key);
+            return;
+        }
+        uncheckedDependencies[key] = remainingDependencies;
+
+        dependencies.forEach(dependencyName => {
+            if (!tasks[dependencyName]) {
+                throw new Error('async.auto task `' + key + '` has a non-existent dependency `' + dependencyName + '` in ' + dependencies.join(', '));
+            }
+            addListener(dependencyName, () => {
+                remainingDependencies--;
+                if (remainingDependencies === 0) {
+                    enqueueTask(key, task);
+                }
+            });
+        });
+    });
+
+    checkForDeadlocks();
+    processQueue();
+
+    function enqueueTask(key, task) {
+        readyTasks.push(() => runTask(key, task));
+    }
+
+    function processQueue() {
+        if (canceled) return;
+        if (readyTasks.length === 0 && runningTasks === 0) {
+            return callback(null, results);
+        }
+        while (readyTasks.length && runningTasks < concurrency) {
+            var run = readyTasks.shift();
+            run();
+        }
+    }
+
+    function addListener(taskName, fn) {
+        var taskListeners = listeners[taskName];
+        if (!taskListeners) {
+            taskListeners = listeners[taskName] = [];
+        }
+
+        taskListeners.push(fn);
+    }
+
+    function taskComplete(taskName) {
+        var taskListeners = listeners[taskName] || [];
+        taskListeners.forEach(fn => fn());
+        processQueue();
+    }
+
+    function runTask(key, task) {
+        if (hasError) return;
+
+        var taskCallback = (0, _onlyOnce2.default)((err, ...result) => {
+            runningTasks--;
+            if (err === false) {
+                canceled = true;
+                return;
+            }
+            if (result.length < 2) {
+                [result] = result;
+            }
+            if (err) {
+                var safeResults = {};
+                Object.keys(results).forEach(rkey => {
+                    safeResults[rkey] = results[rkey];
+                });
+                safeResults[key] = result;
+                hasError = true;
+                listeners = Object.create(null);
+                if (canceled) return;
+                callback(err, safeResults);
+            } else {
+                results[key] = result;
+                taskComplete(key);
+            }
+        });
+
+        runningTasks++;
+        var taskFn = (0, _wrapAsync2.default)(task[task.length - 1]);
+        if (task.length > 1) {
+            taskFn(results, taskCallback);
+        } else {
+            taskFn(taskCallback);
+        }
+    }
+
+    function checkForDeadlocks() {
+        // Kahn's algorithm
+        // https://en.wikipedia.org/wiki/Topological_sorting#Kahn.27s_algorithm
+        // http://connalle.blogspot.com/2013/10/topological-sortingkahn-algorithm.html
+        var currentTask;
+        var counter = 0;
+        while (readyToCheck.length) {
+            currentTask = readyToCheck.pop();
+            counter++;
+            getDependents(currentTask).forEach(dependent => {
+                if (--uncheckedDependencies[dependent] === 0) {
+                    readyToCheck.push(dependent);
+                }
+            });
+        }
+
+        if (counter !== numTasks) {
+            throw new Error('async.auto cannot execute tasks due to a recursive dependency');
+        }
+    }
+
+    function getDependents(taskName) {
+        var result = [];
+        Object.keys(tasks).forEach(key => {
+            const task = tasks[key];
+            if (Array.isArray(task) && task.indexOf(taskName) >= 0) {
+                result.push(key);
+            }
+        });
+        return result;
+    }
+
+    return callback[_promiseCallback.PROMISE_SYMBOL];
+}
+module.exports = exports['default'];
\ No newline at end of file