+
+## Install
+
+```
+$ npm install ansi-styles
+```
+
+## Usage
+
+```js
+const style = require('ansi-styles');
+
+console.log(`${style.green.open}Hello world!${style.green.close}`);
+
+
+// Color conversion between 16/256/truecolor
+// NOTE: If conversion goes to 16 colors or 256 colors, the original color
+// may be degraded to fit that color palette. This means terminals
+// that do not support 16 million colors will best-match the
+// original color.
+console.log(style.bgColor.ansi.hsl(120, 80, 72) + 'Hello world!' + style.bgColor.close);
+console.log(style.color.ansi256.rgb(199, 20, 250) + 'Hello world!' + style.color.close);
+console.log(style.color.ansi16m.hex('#abcdef') + 'Hello world!' + style.color.close);
+```
+
+## API
+
+Each style has an `open` and `close` property.
+
+## Styles
+
+### Modifiers
+
+- `reset`
+- `bold`
+- `dim`
+- `italic` *(Not widely supported)*
+- `underline`
+- `inverse`
+- `hidden`
+- `strikethrough` *(Not widely supported)*
+
+### Colors
+
+- `black`
+- `red`
+- `green`
+- `yellow`
+- `blue`
+- `magenta`
+- `cyan`
+- `white`
+- `blackBright` (alias: `gray`, `grey`)
+- `redBright`
+- `greenBright`
+- `yellowBright`
+- `blueBright`
+- `magentaBright`
+- `cyanBright`
+- `whiteBright`
+
+### Background colors
+
+- `bgBlack`
+- `bgRed`
+- `bgGreen`
+- `bgYellow`
+- `bgBlue`
+- `bgMagenta`
+- `bgCyan`
+- `bgWhite`
+- `bgBlackBright` (alias: `bgGray`, `bgGrey`)
+- `bgRedBright`
+- `bgGreenBright`
+- `bgYellowBright`
+- `bgBlueBright`
+- `bgMagentaBright`
+- `bgCyanBright`
+- `bgWhiteBright`
+
+## Advanced usage
+
+By default, you get a map of styles, but the styles are also available as groups. They are non-enumerable so they don't show up unless you access them explicitly. This makes it easier to expose only a subset in a higher-level module.
+
+- `style.modifier`
+- `style.color`
+- `style.bgColor`
+
+###### Example
+
+```js
+console.log(style.color.green.open);
+```
+
+Raw escape codes (i.e. without the CSI escape prefix `\u001B[` and render mode postfix `m`) are available under `style.codes`, which returns a `Map` with the open codes as keys and close codes as values.
+
+###### Example
+
+```js
+console.log(style.codes.get(36));
+//=> 39
+```
+
+## [256 / 16 million (TrueColor) support](https://gist.github.com/XVilka/8346728)
+
+`ansi-styles` uses the [`color-convert`](https://github.com/Qix-/color-convert) package to allow for converting between various colors and ANSI escapes, with support for 256 and 16 million colors.
+
+The following color spaces from `color-convert` are supported:
+
+- `rgb`
+- `hex`
+- `keyword`
+- `hsl`
+- `hsv`
+- `hwb`
+- `ansi`
+- `ansi256`
+
+To use these, call the associated conversion function with the intended output, for example:
+
+```js
+style.color.ansi.rgb(100, 200, 15); // RGB to 16 color ansi foreground code
+style.bgColor.ansi.rgb(100, 200, 15); // RGB to 16 color ansi background code
+
+style.color.ansi256.hsl(120, 100, 60); // HSL to 256 color ansi foreground code
+style.bgColor.ansi256.hsl(120, 100, 60); // HSL to 256 color ansi foreground code
+
+style.color.ansi16m.hex('#C0FFEE'); // Hex (RGB) to 16 million color foreground code
+style.bgColor.ansi16m.hex('#C0FFEE'); // Hex (RGB) to 16 million color background code
+```
+
+## Related
+
+- [ansi-escapes](https://github.com/sindresorhus/ansi-escapes) - ANSI escape codes for manipulating the terminal
+
+## Maintainers
+
+- [Sindre Sorhus](https://github.com/sindresorhus)
+- [Josh Junon](https://github.com/qix-)
+
+## For enterprise
+
+Available as part of the Tidelift Subscription.
+
+The maintainers of `ansi-styles` and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use. [Learn more.](https://tidelift.com/subscription/pkg/npm-ansi-styles?utm_source=npm-ansi-styles&utm_medium=referral&utm_campaign=enterprise&utm_term=repo)
diff --git a/4_majorproject/node_modules/array-flatten/LICENSE b/4_majorproject/node_modules/array-flatten/LICENSE
new file mode 100644
index 0000000..983fbe8
--- /dev/null
+++ b/4_majorproject/node_modules/array-flatten/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Blake Embrey (hello@blakeembrey.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/4_majorproject/node_modules/array-flatten/README.md b/4_majorproject/node_modules/array-flatten/README.md
new file mode 100644
index 0000000..91fa5b6
--- /dev/null
+++ b/4_majorproject/node_modules/array-flatten/README.md
@@ -0,0 +1,43 @@
+# Array Flatten
+
+[![NPM version][npm-image]][npm-url]
+[![NPM downloads][downloads-image]][downloads-url]
+[![Build status][travis-image]][travis-url]
+[![Test coverage][coveralls-image]][coveralls-url]
+
+> Flatten an array of nested arrays into a single flat array. Accepts an optional depth.
+
+## Installation
+
+```
+npm install array-flatten --save
+```
+
+## Usage
+
+```javascript
+var flatten = require('array-flatten')
+
+flatten([1, [2, [3, [4, [5], 6], 7], 8], 9])
+//=> [1, 2, 3, 4, 5, 6, 7, 8, 9]
+
+flatten([1, [2, [3, [4, [5], 6], 7], 8], 9], 2)
+//=> [1, 2, 3, [4, [5], 6], 7, 8, 9]
+
+(function () {
+ flatten(arguments) //=> [1, 2, 3]
+})(1, [2, 3])
+```
+
+## License
+
+MIT
+
+[npm-image]: https://img.shields.io/npm/v/array-flatten.svg?style=flat
+[npm-url]: https://npmjs.org/package/array-flatten
+[downloads-image]: https://img.shields.io/npm/dm/array-flatten.svg?style=flat
+[downloads-url]: https://npmjs.org/package/array-flatten
+[travis-image]: https://img.shields.io/travis/blakeembrey/array-flatten.svg?style=flat
+[travis-url]: https://travis-ci.org/blakeembrey/array-flatten
+[coveralls-image]: https://img.shields.io/coveralls/blakeembrey/array-flatten.svg?style=flat
+[coveralls-url]: https://coveralls.io/r/blakeembrey/array-flatten?branch=master
diff --git a/4_majorproject/node_modules/array-flatten/array-flatten.js b/4_majorproject/node_modules/array-flatten/array-flatten.js
new file mode 100644
index 0000000..089117b
--- /dev/null
+++ b/4_majorproject/node_modules/array-flatten/array-flatten.js
@@ -0,0 +1,64 @@
+'use strict'
+
+/**
+ * Expose `arrayFlatten`.
+ */
+module.exports = arrayFlatten
+
+/**
+ * Recursive flatten function with depth.
+ *
+ * @param {Array} array
+ * @param {Array} result
+ * @param {Number} depth
+ * @return {Array}
+ */
+function flattenWithDepth (array, result, depth) {
+ for (var i = 0; i < array.length; i++) {
+ var value = array[i]
+
+ if (depth > 0 && Array.isArray(value)) {
+ flattenWithDepth(value, result, depth - 1)
+ } else {
+ result.push(value)
+ }
+ }
+
+ return result
+}
+
+/**
+ * Recursive flatten function. Omitting depth is slightly faster.
+ *
+ * @param {Array} array
+ * @param {Array} result
+ * @return {Array}
+ */
+function flattenForever (array, result) {
+ for (var i = 0; i < array.length; i++) {
+ var value = array[i]
+
+ if (Array.isArray(value)) {
+ flattenForever(value, result)
+ } else {
+ result.push(value)
+ }
+ }
+
+ return result
+}
+
+/**
+ * Flatten an array, with the ability to define a depth.
+ *
+ * @param {Array} array
+ * @param {Number} depth
+ * @return {Array}
+ */
+function arrayFlatten (array, depth) {
+ if (depth == null) {
+ return flattenForever(array, [])
+ }
+
+ return flattenWithDepth(array, [], depth)
+}
diff --git a/4_majorproject/node_modules/array-flatten/package.json b/4_majorproject/node_modules/array-flatten/package.json
new file mode 100644
index 0000000..1a24e2a
--- /dev/null
+++ b/4_majorproject/node_modules/array-flatten/package.json
@@ -0,0 +1,39 @@
+{
+ "name": "array-flatten",
+ "version": "1.1.1",
+ "description": "Flatten an array of nested arrays into a single flat array",
+ "main": "array-flatten.js",
+ "files": [
+ "array-flatten.js",
+ "LICENSE"
+ ],
+ "scripts": {
+ "test": "istanbul cover _mocha -- -R spec"
+ },
+ "repository": {
+ "type": "git",
+ "url": "git://github.com/blakeembrey/array-flatten.git"
+ },
+ "keywords": [
+ "array",
+ "flatten",
+ "arguments",
+ "depth"
+ ],
+ "author": {
+ "name": "Blake Embrey",
+ "email": "hello@blakeembrey.com",
+ "url": "http://blakeembrey.me"
+ },
+ "license": "MIT",
+ "bugs": {
+ "url": "https://github.com/blakeembrey/array-flatten/issues"
+ },
+ "homepage": "https://github.com/blakeembrey/array-flatten",
+ "devDependencies": {
+ "istanbul": "^0.3.13",
+ "mocha": "^2.2.4",
+ "pre-commit": "^1.0.7",
+ "standard": "^3.7.3"
+ }
+}
diff --git a/4_majorproject/node_modules/async/CHANGELOG.md b/4_majorproject/node_modules/async/CHANGELOG.md
new file mode 100644
index 0000000..8a9a1bf
--- /dev/null
+++ b/4_majorproject/node_modules/async/CHANGELOG.md
@@ -0,0 +1,348 @@
+# 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.
diff --git a/4_majorproject/node_modules/async/LICENSE b/4_majorproject/node_modules/async/LICENSE
new file mode 100644
index 0000000..b18aed6
--- /dev/null
+++ b/4_majorproject/node_modules/async/LICENSE
@@ -0,0 +1,19 @@
+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.
diff --git a/4_majorproject/node_modules/async/README.md b/4_majorproject/node_modules/async/README.md
new file mode 100644
index 0000000..77f645e
--- /dev/null
+++ b/4_majorproject/node_modules/async/README.md
@@ -0,0 +1,59 @@
+
+
+
+[](https://www.npmjs.com/package/async)
+[](https://coveralls.io/r/caolan/async?branch=master)
+[](https://gitter.im/caolan/async?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+[](https://www.jsdelivr.com/package/npm/async)
+
+
+
+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 string | | |
+| [options] | object | | Optional settings |
+| [options.relaxed] | boolean | true | Attempt to return native JS types where possible, rather than BSON types (if true) |
+
+Parse an Extended JSON string, constructing the JavaScript value or object described by that
+string.
+
+**Example**
+
+```js
+const { EJSON } = require('bson');
+const text = '{ "int32": { "$numberInt": "10" } }';
+
+// prints { int32: { [String: '10'] _bsontype: 'Int32', value: '10' } }
+console.log(EJSON.parse(text, { relaxed: false }));
+
+// prints { int32: 10 }
+console.log(EJSON.parse(text));
+```
+
+
+
+#### _EJSON_.stringify(value, [replacer], [space], [options])
+
+| Param | Type | Default | Description |
+| ----------------- | ------------------------------------------- | ----------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| value | object | | The value to convert to extended JSON |
+| [replacer] | function \| array | | A function that alters the behavior of the stringification process, or an array of String and Number objects that serve as a whitelist for selecting/filtering the properties of the value object to be included in the JSON string. If this value is null or not provided, all properties of the object are included in the resulting JSON string |
+| [space] | string \| number | | A String or Number object that's used to insert white space into the output JSON string for readability purposes. |
+| [options] | object | | Optional settings |
+| [options.relaxed] | boolean | true | Enabled Extended JSON's `relaxed` mode |
+| [options.legacy] | boolean | true | Output in Extended JSON v1 |
+
+Converts a BSON document to an Extended JSON string, optionally replacing values if a replacer
+function is specified or optionally including only the specified properties if a replacer array
+is specified.
+
+**Example**
+
+```js
+const { EJSON } = require('bson');
+const Int32 = require('mongodb').Int32;
+const doc = { int32: new Int32(10) };
+
+// prints '{"int32":{"$numberInt":"10"}}'
+console.log(EJSON.stringify(doc, { relaxed: false }));
+
+// prints '{"int32":10}'
+console.log(EJSON.stringify(doc));
+```
+
+
+
+#### _EJSON_.serialize(bson, [options])
+
+| Param | Type | Description |
+| --------- | ------------------- | ---------------------------------------------------- |
+| bson | object | The object to serialize |
+| [options] | object | Optional settings passed to the `stringify` function |
+
+Serializes an object to an Extended JSON string, and reparse it as a JavaScript object.
+
+
+
+#### _EJSON_.deserialize(ejson, [options])
+
+| Param | Type | Description |
+| --------- | ------------------- | -------------------------------------------- |
+| ejson | object | The Extended JSON object to deserialize |
+| [options] | object | Optional settings passed to the parse method |
+
+Deserializes an Extended JSON object into a plain JavaScript object with native/BSON types
+
+## Error Handling
+
+It is our recommendation to use `BSONError.isBSONError()` checks on errors and to avoid relying on parsing `error.message` and `error.name` strings in your code. We guarantee `BSONError.isBSONError()` checks will pass according to semver guidelines, but errors may be sub-classed or their messages may change at any time, even patch releases, as we see fit to increase the helpfulness of the errors.
+
+Any new errors we add to the driver will directly extend an existing error class and no existing error will be moved to a different parent class outside of a major release.
+This means `BSONError.isBSONError()` will always be able to accurately capture the errors that our BSON library throws.
+
+Hypothetical example: A collection in our Db has an issue with UTF-8 data:
+
+```ts
+let documentCount = 0;
+const cursor = collection.find({}, { utf8Validation: true });
+try {
+ for await (const doc of cursor) documentCount += 1;
+} catch (error) {
+ if (BSONError.isBSONError(error)) {
+ console.log(`Found the troublemaker UTF-8!: ${documentCount} ${error.message}`);
+ return documentCount;
+ }
+ throw error;
+}
+```
+
+## React Native
+
+BSON vendors the required polyfills for `TextEncoder`, `TextDecoder`, `atob`, `btoa` imported from React Native and therefore doesn't expect users to polyfill these. One additional polyfill, `crypto.getRandomValues` is recommended and can be installed with the following command:
+
+```sh
+npm install --save react-native-get-random-values
+```
+
+The following snippet should be placed at the top of the entrypoint (by default this is the root `index.js` file) for React Native projects using the BSON library. These lines must be placed for any code that imports `BSON`.
+
+```typescript
+// Required Polyfills For ReactNative
+import 'react-native-get-random-values';
+```
+
+Finally, import the `BSON` library like so:
+
+```typescript
+import { BSON, EJSON } from 'bson';
+```
+
+This will cause React Native to import the `node_modules/bson/lib/bson.rn.cjs` bundle (see the `"react-native"` setting we have in the `"exports"` section of our [package.json](./package.json).)
+
+### Technical Note about React Native module import
+
+The `"exports"` definition in our `package.json` will result in BSON's CommonJS bundle being imported in a React Native project instead of the ES module bundle. Importing the CommonJS bundle is necessary because BSON's ES module bundle of BSON uses top-level await, which is not supported syntax in [React Native's runtime hermes](https://hermesengine.dev/).
+
+## FAQ
+
+#### Why does `undefined` get converted to `null`?
+
+The `undefined` BSON type has been [deprecated for many years](http://bsonspec.org/spec.html), so this library has dropped support for it. Use the `ignoreUndefined` option (for example, from the [driver](http://mongodb.github.io/node-mongodb-native/2.2/api/MongoClient.html#connect) ) to instead remove `undefined` keys.
+
+#### How do I add custom serialization logic?
+
+This library looks for `toBSON()` functions on every path, and calls the `toBSON()` function to get the value to serialize.
+
+```javascript
+const BSON = require('bson');
+
+class CustomSerialize {
+ toBSON() {
+ return 42;
+ }
+}
+
+const obj = { answer: new CustomSerialize() };
+// "{ answer: 42 }"
+console.log(BSON.deserialize(BSON.serialize(obj)));
+```
diff --git a/4_majorproject/node_modules/bson/bson.d.ts b/4_majorproject/node_modules/bson/bson.d.ts
new file mode 100644
index 0000000..a59c6f5
--- /dev/null
+++ b/4_majorproject/node_modules/bson/bson.d.ts
@@ -0,0 +1,1598 @@
+/**
+ * A class representation of the BSON Binary type.
+ * @public
+ * @category BSONType
+ */
+export declare class Binary extends BSONValue {
+ get _bsontype(): 'Binary';
+ /* Excluded from this release type: BSON_BINARY_SUBTYPE_DEFAULT */
+ /** Initial buffer default size */
+ static readonly BUFFER_SIZE = 256;
+ /** Default BSON type */
+ static readonly SUBTYPE_DEFAULT = 0;
+ /** Function BSON type */
+ static readonly SUBTYPE_FUNCTION = 1;
+ /** Byte Array BSON type */
+ static readonly SUBTYPE_BYTE_ARRAY = 2;
+ /** Deprecated UUID BSON type @deprecated Please use SUBTYPE_UUID */
+ static readonly SUBTYPE_UUID_OLD = 3;
+ /** UUID BSON type */
+ static readonly SUBTYPE_UUID = 4;
+ /** MD5 BSON type */
+ static readonly SUBTYPE_MD5 = 5;
+ /** Encrypted BSON type */
+ static readonly SUBTYPE_ENCRYPTED = 6;
+ /** Column BSON type */
+ static readonly SUBTYPE_COLUMN = 7;
+ /** Sensitive BSON type */
+ static readonly SUBTYPE_SENSITIVE = 8;
+ /** User BSON type */
+ static readonly SUBTYPE_USER_DEFINED = 128;
+ buffer: Uint8Array;
+ sub_type: number;
+ position: number;
+ /**
+ * Create a new Binary instance.
+ * @param buffer - a buffer object containing the binary data.
+ * @param subType - the option binary type.
+ */
+ constructor(buffer?: BinarySequence, subType?: number);
+ /**
+ * Updates this binary with byte_value.
+ *
+ * @param byteValue - a single byte we wish to write.
+ */
+ put(byteValue: string | number | Uint8Array | number[]): void;
+ /**
+ * Writes a buffer to the binary.
+ *
+ * @param sequence - a string or buffer to be written to the Binary BSON object.
+ * @param offset - specify the binary of where to write the content.
+ */
+ write(sequence: BinarySequence, offset: number): void;
+ /**
+ * Reads **length** bytes starting at **position**.
+ *
+ * @param position - read from the given position in the Binary.
+ * @param length - the number of bytes to read.
+ */
+ read(position: number, length: number): BinarySequence;
+ /** returns a view of the binary value as a Uint8Array */
+ value(): Uint8Array;
+ /** the length of the binary sequence */
+ length(): number;
+ toJSON(): string;
+ toString(encoding?: 'hex' | 'base64' | 'utf8' | 'utf-8'): string;
+ /* Excluded from this release type: toExtendedJSON */
+ toUUID(): UUID;
+ /** Creates an Binary instance from a hex digit string */
+ static createFromHexString(hex: string, subType?: number): Binary;
+ /** Creates an Binary instance from a base64 string */
+ static createFromBase64(base64: string, subType?: number): Binary;
+ /* Excluded from this release type: fromExtendedJSON */
+ inspect(depth?: number, options?: unknown, inspect?: InspectFn): string;
+}
+
+/** @public */
+export declare interface BinaryExtended {
+ $binary: {
+ subType: string;
+ base64: string;
+ };
+}
+
+/** @public */
+export declare interface BinaryExtendedLegacy {
+ $type: string;
+ $binary: string;
+}
+
+/** @public */
+export declare type BinarySequence = Uint8Array | number[];
+
+declare namespace BSON {
+ export {
+ setInternalBufferSize,
+ serialize,
+ serializeWithBufferAndIndex,
+ deserialize,
+ calculateObjectSize,
+ deserializeStream,
+ UUIDExtended,
+ BinaryExtended,
+ BinaryExtendedLegacy,
+ BinarySequence,
+ CodeExtended,
+ DBRefLike,
+ Decimal128Extended,
+ DoubleExtended,
+ EJSONOptions,
+ Int32Extended,
+ LongExtended,
+ MaxKeyExtended,
+ MinKeyExtended,
+ ObjectIdExtended,
+ ObjectIdLike,
+ BSONRegExpExtended,
+ BSONRegExpExtendedLegacy,
+ BSONSymbolExtended,
+ LongWithoutOverrides,
+ TimestampExtended,
+ TimestampOverrides,
+ LongWithoutOverridesClass,
+ SerializeOptions,
+ DeserializeOptions,
+ Code,
+ BSONSymbol,
+ DBRef,
+ Binary,
+ ObjectId,
+ UUID,
+ Long,
+ Timestamp,
+ Double,
+ Int32,
+ MinKey,
+ MaxKey,
+ BSONRegExp,
+ Decimal128,
+ BSONValue,
+ BSONError,
+ BSONVersionError,
+ BSONRuntimeError,
+ BSONOffsetError,
+ BSONType,
+ EJSON,
+ onDemand,
+ OnDemand,
+ Document,
+ CalculateObjectSizeOptions
+ }
+}
+export { BSON }
+
+/**
+ * @public
+ * @experimental
+ */
+declare type BSONElement = [
+type: number,
+nameOffset: number,
+nameLength: number,
+offset: number,
+length: number
+];
+
+/**
+ * @public
+ * @category Error
+ *
+ * `BSONError` objects are thrown when BSON encounters an error.
+ *
+ * This is the parent class for all the other errors thrown by this library.
+ */
+export declare class BSONError extends Error {
+ /* Excluded from this release type: bsonError */
+ get name(): string;
+ constructor(message: string, options?: {
+ cause?: unknown;
+ });
+ /**
+ * @public
+ *
+ * All errors thrown from the BSON library inherit from `BSONError`.
+ * This method can assist with determining if an error originates from the BSON library
+ * even if it does not pass an `instanceof` check against this class' constructor.
+ *
+ * @param value - any javascript value that needs type checking
+ */
+ static isBSONError(value: unknown): value is BSONError;
+}
+
+/**
+ * @public
+ * @category Error
+ *
+ * @experimental
+ *
+ * An error generated when BSON bytes are invalid.
+ * Reports the offset the parser was able to reach before encountering the error.
+ */
+export declare class BSONOffsetError extends BSONError {
+ get name(): 'BSONOffsetError';
+ offset: number;
+ constructor(message: string, offset: number, options?: {
+ cause?: unknown;
+ });
+}
+
+/**
+ * A class representation of the BSON RegExp type.
+ * @public
+ * @category BSONType
+ */
+export declare class BSONRegExp extends BSONValue {
+ get _bsontype(): 'BSONRegExp';
+ pattern: string;
+ options: string;
+ /**
+ * @param pattern - The regular expression pattern to match
+ * @param options - The regular expression options
+ */
+ constructor(pattern: string, options?: string);
+ static parseOptions(options?: string): string;
+ /* Excluded from this release type: toExtendedJSON */
+ /* Excluded from this release type: fromExtendedJSON */
+ inspect(depth?: number, options?: unknown, inspect?: InspectFn): string;
+}
+
+/** @public */
+export declare interface BSONRegExpExtended {
+ $regularExpression: {
+ pattern: string;
+ options: string;
+ };
+}
+
+/** @public */
+export declare interface BSONRegExpExtendedLegacy {
+ $regex: string | BSONRegExp;
+ $options: string;
+}
+
+/**
+ * @public
+ * @category Error
+ *
+ * An error generated when BSON functions encounter an unexpected input
+ * or reaches an unexpected/invalid internal state
+ *
+ */
+export declare class BSONRuntimeError extends BSONError {
+ get name(): 'BSONRuntimeError';
+ constructor(message: string);
+}
+
+/**
+ * A class representation of the BSON Symbol type.
+ * @public
+ * @category BSONType
+ */
+export declare class BSONSymbol extends BSONValue {
+ get _bsontype(): 'BSONSymbol';
+ value: string;
+ /**
+ * @param value - the string representing the symbol.
+ */
+ constructor(value: string);
+ /** Access the wrapped string value. */
+ valueOf(): string;
+ toString(): string;
+ toJSON(): string;
+ /* Excluded from this release type: toExtendedJSON */
+ /* Excluded from this release type: fromExtendedJSON */
+ inspect(depth?: number, options?: unknown, inspect?: InspectFn): string;
+}
+
+/** @public */
+export declare interface BSONSymbolExtended {
+ $symbol: string;
+}
+
+/** @public */
+export declare const BSONType: Readonly<{
+ readonly double: 1;
+ readonly string: 2;
+ readonly object: 3;
+ readonly array: 4;
+ readonly binData: 5;
+ readonly undefined: 6;
+ readonly objectId: 7;
+ readonly bool: 8;
+ readonly date: 9;
+ readonly null: 10;
+ readonly regex: 11;
+ readonly dbPointer: 12;
+ readonly javascript: 13;
+ readonly symbol: 14;
+ readonly javascriptWithScope: 15;
+ readonly int: 16;
+ readonly timestamp: 17;
+ readonly long: 18;
+ readonly decimal: 19;
+ readonly minKey: -1;
+ readonly maxKey: 127;
+}>;
+
+/** @public */
+export declare type BSONType = (typeof BSONType)[keyof typeof BSONType];
+
+/** @public */
+export declare abstract class BSONValue {
+ /** @public */
+ abstract get _bsontype(): string;
+ /**
+ * @public
+ * Prints a human-readable string of BSON value information
+ * If invoked manually without node.js.inspect function, this will default to a modified JSON.stringify
+ */
+ abstract inspect(depth?: number, options?: unknown, inspect?: InspectFn): string;
+ /* Excluded from this release type: toExtendedJSON */
+}
+
+/**
+ * @public
+ * @category Error
+ */
+export declare class BSONVersionError extends BSONError {
+ get name(): 'BSONVersionError';
+ constructor();
+}
+
+/**
+ * @public
+ * @experimental
+ *
+ * A collection of functions that help work with data in a Uint8Array.
+ * ByteUtils is configured at load time to use Node.js or Web based APIs for the internal implementations.
+ */
+declare type ByteUtils = {
+ /** Transforms the input to an instance of Buffer if running on node, otherwise Uint8Array */
+ toLocalBufferType: (buffer: Uint8Array | ArrayBufferView | ArrayBuffer) => Uint8Array;
+ /** Create empty space of size */
+ allocate: (size: number) => Uint8Array;
+ /** Create empty space of size, use pooled memory when available */
+ allocateUnsafe: (size: number) => Uint8Array;
+ /** Check if two Uint8Arrays are deep equal */
+ equals: (a: Uint8Array, b: Uint8Array) => boolean;
+ /** Check if two Uint8Arrays are deep equal */
+ fromNumberArray: (array: number[]) => Uint8Array;
+ /** Create a Uint8Array from a base64 string */
+ fromBase64: (base64: string) => Uint8Array;
+ /** Create a base64 string from bytes */
+ toBase64: (buffer: Uint8Array) => string;
+ /** **Legacy** binary strings are an outdated method of data transfer. Do not add public API support for interpreting this format */
+ fromISO88591: (codePoints: string) => Uint8Array;
+ /** **Legacy** binary strings are an outdated method of data transfer. Do not add public API support for interpreting this format */
+ toISO88591: (buffer: Uint8Array) => string;
+ /** Create a Uint8Array from a hex string */
+ fromHex: (hex: string) => Uint8Array;
+ /** Create a lowercase hex string from bytes */
+ toHex: (buffer: Uint8Array) => string;
+ /** Create a string from utf8 code units, fatal=true will throw an error if UTF-8 bytes are invalid, fatal=false will insert replacement characters */
+ toUTF8: (buffer: Uint8Array, start: number, end: number, fatal: boolean) => string;
+ /** Get the utf8 code unit count from a string if it were to be transformed to utf8 */
+ utf8ByteLength: (input: string) => number;
+ /** Encode UTF8 bytes generated from `source` string into `destination` at byteOffset. Returns the number of bytes encoded. */
+ encodeUTF8Into: (destination: Uint8Array, source: string, byteOffset: number) => number;
+ /** Generate a Uint8Array filled with random bytes with byteLength */
+ randomBytes: (byteLength: number) => Uint8Array;
+};
+
+/* Excluded declaration from this release type: ByteUtils */
+
+/**
+ * Calculate the bson size for a passed in Javascript object.
+ *
+ * @param object - the Javascript object to calculate the BSON byte size for
+ * @returns size of BSON object in bytes
+ * @public
+ */
+export declare function calculateObjectSize(object: Document, options?: CalculateObjectSizeOptions): number;
+
+/** @public */
+export declare type CalculateObjectSizeOptions = Pick
+
+
+ 
+
+
+
+
+
+> Terminal string styling done right
+
+[](https://travis-ci.org/chalk/chalk) [](https://coveralls.io/github/chalk/chalk?branch=master) [](https://www.npmjs.com/package/chalk?activeTab=dependents) [](https://www.npmjs.com/package/chalk) [](https://www.youtube.com/watch?v=9auOCbH5Ns4) [](https://github.com/xojs/xo)  [](https://repl.it/github/chalk/chalk)
+
+
+
++ +--- + +
+
+
+ +
+
+
+
+ +
+
+
+
+ +
+ +
+
+---
+
++
+ + Sindre Sorhus' open source work is supported by the community on GitHub Sponsors and Dev + +
+ Special thanks to: ++
+ +
+
+ +
+ +
+
+ +
+ +
+ 
+
+ All your environment variables, in one place
+
+
+ Stop struggling with scattered API keys, hacking together home-brewed tools,
+
+ and avoiding access controls. Keep your team and servers in sync with Doppler. +
+
+ + and avoiding access controls. Keep your team and servers in sync with Doppler. +
+ +
+ 
+
+
+
+
+ + +## Highlights + +- Expressive API +- Highly performant +- Ability to nest styles +- [256/Truecolor color support](#256-and-truecolor-color-support) +- Auto-detects color support +- Doesn't extend `String.prototype` +- Clean and focused +- Actively maintained +- [Used by ~50,000 packages](https://www.npmjs.com/browse/depended/chalk) as of January 1, 2020 + +## Install + +```console +$ npm install chalk +``` + +## Usage + +```js +const chalk = require('chalk'); + +console.log(chalk.blue('Hello world!')); +``` + +Chalk comes with an easy to use composable API where you just chain and nest the styles you want. + +```js +const chalk = require('chalk'); +const log = console.log; + +// Combine styled and normal strings +log(chalk.blue('Hello') + ' World' + chalk.red('!')); + +// Compose multiple styles using the chainable API +log(chalk.blue.bgRed.bold('Hello world!')); + +// Pass in multiple arguments +log(chalk.blue('Hello', 'World!', 'Foo', 'bar', 'biz', 'baz')); + +// Nest styles +log(chalk.red('Hello', chalk.underline.bgBlue('world') + '!')); + +// Nest styles of the same type even (color, underline, background) +log(chalk.green( + 'I am a green line ' + + chalk.blue.underline.bold('with a blue substring') + + ' that becomes green again!' +)); + +// ES2015 template literal +log(` +CPU: ${chalk.red('90%')} +RAM: ${chalk.green('40%')} +DISK: ${chalk.yellow('70%')} +`); + +// ES2015 tagged template literal +log(chalk` +CPU: {red ${cpu.totalPercent}%} +RAM: {green ${ram.used / ram.total * 100}%} +DISK: {rgb(255,131,0) ${disk.used / disk.total * 100}%} +`); + +// Use RGB colors in terminal emulators that support it. +log(chalk.keyword('orange')('Yay for orange colored text!')); +log(chalk.rgb(123, 45, 67).underline('Underlined reddish color')); +log(chalk.hex('#DEADED').bold('Bold gray!')); +``` + +Easily define your own themes: + +```js +const chalk = require('chalk'); + +const error = chalk.bold.red; +const warning = chalk.keyword('orange'); + +console.log(error('Error!')); +console.log(warning('Warning!')); +``` + +Take advantage of console.log [string substitution](https://nodejs.org/docs/latest/api/console.html#console_console_log_data_args): + +```js +const name = 'Sindre'; +console.log(chalk.green('Hello %s'), name); +//=> 'Hello Sindre' +``` + +## API + +### chalk.`