api final

train_app/stack-api/.expo/README.md

+> Why do I have a folder named ".expo" in my project?
+
+The ".expo" folder is created when an Expo project is started using "expo start" command.
+
+> What does the "packager-info.json" file contain?
+
+The "packager-info.json" file contains port numbers and process PIDs that are used to serve the application to the mobile device/simulator.
+
+> What does the "settings.json" file contain?
+
+The "settings.json" file contains the server configuration that is used to serve the application manifest.
+
+> Should I commit the ".expo" folder?
+
+No, you should not share the ".expo" folder. It does not contain any information that is relevant for other developers working on the project, it is specific to your machine.
+
+Upon project creation, the ".expo" folder is already added to your ".gitignore" file.

train_app/stack-api/.expo/settings.json

+{
+  "hostType": "lan",
+  "lanType": "ip",
+  "dev": true,
+  "minify": false,
+  "urlRandomness": null,
+  "https": false
+}

train_app/stack-api/db.js

+const mysql = require('mysql');
+
+const db = mysql.createConnection({
+  host: "localhost",
+  user: "root",
+  password: "",
+  database : 'trainsystem',
+});
+
+db.connect(function(err) {
+  if (err) throw err;
+  console.log("Connected!");
+});
+
+module.exports = { db }
\ No newline at end of file

train_app/stack-api/index.js

+require('./db.js')
+const express = require('express')
+const bodyParser = require('body-parser')
+const cors = require('cors')
+
+var userRoutes = require('./routes/users')
+var predictionRoutes = require('./routes/prediction')
+
+var app = express()
+app.use(bodyParser.json())
+app.use(cors({origin:'http://localhost:3000'}))
+app.listen(3500,()=>console.log('Server started at : 3500'))
+
+app.use('/user',userRoutes)
+app.use('/prediction',predictionRoutes)
+app.use(express.static('public'))
\ No newline at end of file

train_app/stack-api/node_modules/.bin/mime

+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*) basedir=`cygpath -w "$basedir"`;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  "$basedir/node"  "$basedir/../mime/cli.js" "$@"
+  ret=$?
+else 
+  node  "$basedir/../mime/cli.js" "$@"
+  ret=$?
+fi
+exit $ret

train_app/stack-api/node_modules/.bin/mime.cmd

+@IF EXIST "%~dp0\node.exe" (
+  "%~dp0\node.exe"  "%~dp0\..\mime\cli.js" %*
+) ELSE (
+  @SETLOCAL
+  @SET PATHEXT=%PATHEXT:;.JS;=;%
+  node  "%~dp0\..\mime\cli.js" %*
+)
\ No newline at end of file

train_app/stack-api/node_modules/.bin/mkdirp

+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*) basedir=`cygpath -w "$basedir"`;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  "$basedir/node"  "$basedir/../mkdirp/bin/cmd.js" "$@"
+  ret=$?
+else 
+  node  "$basedir/../mkdirp/bin/cmd.js" "$@"
+  ret=$?
+fi
+exit $ret

train_app/stack-api/node_modules/.bin/mkdirp.cmd

+@IF EXIST "%~dp0\node.exe" (
+  "%~dp0\node.exe"  "%~dp0\..\mkdirp\bin\cmd.js" %*
+) ELSE (
+  @SETLOCAL
+  @SET PATHEXT=%PATHEXT:;.JS;=;%
+  node  "%~dp0\..\mkdirp\bin\cmd.js" %*
+)
\ No newline at end of file

train_app/stack-api/node_modules/accepts/HISTORY.md

+1.3.7 / 2019-04-29
+==================
+
+  * deps: negotiator@0.6.2
+    - Fix sorting charset, encoding, and language with extra parameters
+
+1.3.6 / 2019-04-28
+==================
+
+  * deps: mime-types@~2.1.24
+    - deps: mime-db@~1.40.0
+
+1.3.5 / 2018-02-28
+==================
+
+  * deps: mime-types@~2.1.18
+    - deps: mime-db@~1.33.0
+
+1.3.4 / 2017-08-22
+==================
+
+  * deps: mime-types@~2.1.16
+    - deps: mime-db@~1.29.0
+
+1.3.3 / 2016-05-02
+==================
+
+  * deps: mime-types@~2.1.11
+    - deps: mime-db@~1.23.0
+  * deps: negotiator@0.6.1
+    - perf: improve `Accept` parsing speed
+    - perf: improve `Accept-Charset` parsing speed
+    - perf: improve `Accept-Encoding` parsing speed
+    - perf: improve `Accept-Language` parsing speed
+
+1.3.2 / 2016-03-08
+==================
+
+  * deps: mime-types@~2.1.10
+    - Fix extension of `application/dash+xml`
+    - Update primary extension for `audio/mp4`
+    - deps: mime-db@~1.22.0
+
+1.3.1 / 2016-01-19
+==================
+
+  * deps: mime-types@~2.1.9
+    - deps: mime-db@~1.21.0
+
+1.3.0 / 2015-09-29
+==================
+
+  * deps: mime-types@~2.1.7
+    - deps: mime-db@~1.19.0
+  * deps: negotiator@0.6.0
+    - Fix including type extensions in parameters in `Accept` parsing
+    - Fix parsing `Accept` parameters with quoted equals
+    - Fix parsing `Accept` parameters with quoted semicolons
+    - Lazy-load modules from main entry point
+    - perf: delay type concatenation until needed
+    - perf: enable strict mode
+    - perf: hoist regular expressions
+    - perf: remove closures getting spec properties
+    - perf: remove a closure from media type parsing
+    - perf: remove property delete from media type parsing
+
+1.2.13 / 2015-09-06
+===================
+
+  * deps: mime-types@~2.1.6
+    - deps: mime-db@~1.18.0
+
+1.2.12 / 2015-07-30
+===================
+
+  * deps: mime-types@~2.1.4
+    - deps: mime-db@~1.16.0
+
+1.2.11 / 2015-07-16
+===================
+
+  * deps: mime-types@~2.1.3
+    - deps: mime-db@~1.15.0
+
+1.2.10 / 2015-07-01
+===================
+
+  * deps: mime-types@~2.1.2
+    - deps: mime-db@~1.14.0
+
+1.2.9 / 2015-06-08
+==================
+
+  * deps: mime-types@~2.1.1
+    - perf: fix deopt during mapping
+
+1.2.8 / 2015-06-07
+==================
+
+  * deps: mime-types@~2.1.0
+    - deps: mime-db@~1.13.0
+  * perf: avoid argument reassignment & argument slice
+  * perf: avoid negotiator recursive construction
+  * perf: enable strict mode
+  * perf: remove unnecessary bitwise operator
+
+1.2.7 / 2015-05-10
+==================
+
+  * deps: negotiator@0.5.3
+    - Fix media type parameter matching to be case-insensitive
+
+1.2.6 / 2015-05-07
+==================
+
+  * deps: mime-types@~2.0.11
+    - deps: mime-db@~1.9.1
+  * deps: negotiator@0.5.2
+    - Fix comparing media types with quoted values
+    - Fix splitting media types with quoted commas
+
+1.2.5 / 2015-03-13
+==================
+
+  * deps: mime-types@~2.0.10
+    - deps: mime-db@~1.8.0
+
+1.2.4 / 2015-02-14
+==================
+
+  * Support Node.js 0.6
+  * deps: mime-types@~2.0.9
+    - deps: mime-db@~1.7.0
+  * deps: negotiator@0.5.1
+    - Fix preference sorting to be stable for long acceptable lists
+
+1.2.3 / 2015-01-31
+==================
+
+  * deps: mime-types@~2.0.8
+    - deps: mime-db@~1.6.0
+
+1.2.2 / 2014-12-30
+==================
+
+  * deps: mime-types@~2.0.7
+    - deps: mime-db@~1.5.0
+
+1.2.1 / 2014-12-30
+==================
+
+  * deps: mime-types@~2.0.5
+    - deps: mime-db@~1.3.1
+
+1.2.0 / 2014-12-19
+==================
+
+  * deps: negotiator@0.5.0
+    - Fix list return order when large accepted list
+    - Fix missing identity encoding when q=0 exists
+    - Remove dynamic building of Negotiator class
+
+1.1.4 / 2014-12-10
+==================
+
+  * deps: mime-types@~2.0.4
+    - deps: mime-db@~1.3.0
+
+1.1.3 / 2014-11-09
+==================
+
+  * deps: mime-types@~2.0.3
+    - deps: mime-db@~1.2.0
+
+1.1.2 / 2014-10-14
+==================
+
+  * deps: negotiator@0.4.9
+    - Fix error when media type has invalid parameter
+
+1.1.1 / 2014-09-28
+==================
+
+  * deps: mime-types@~2.0.2
+    - deps: mime-db@~1.1.0
+  * deps: negotiator@0.4.8
+    - Fix all negotiations to be case-insensitive
+    - Stable sort preferences of same quality according to client order
+
+1.1.0 / 2014-09-02
+==================
+
+  * update `mime-types`
+
+1.0.7 / 2014-07-04
+==================
+
+  * Fix wrong type returned from `type` when match after unknown extension
+
+1.0.6 / 2014-06-24
+==================
+
+  * deps: negotiator@0.4.7
+
+1.0.5 / 2014-06-20
+==================
+
+ * fix crash when unknown extension given
+
+1.0.4 / 2014-06-19
+==================
+
+  * use `mime-types`
+
+1.0.3 / 2014-06-11
+==================
+
+  * deps: negotiator@0.4.6
+    - Order by specificity when quality is the same
+
+1.0.2 / 2014-05-29
+==================
+
+  * Fix interpretation when header not in request
+  * deps: pin negotiator@0.4.5
+
+1.0.1 / 2014-01-18
+==================
+
+  * Identity encoding isn't always acceptable
+  * deps: negotiator@~0.4.0
+
+1.0.0 / 2013-12-27
+==================
+
+  * Genesis

train_app/stack-api/node_modules/accepts/LICENSE

+(The MIT License)
+
+Copyright (c) 2014 Jonathan Ong <me@jongleberry.com>
+Copyright (c) 2015 Douglas Christopher Wilson <doug@somethingdoug.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.

train_app/stack-api/node_modules/accepts/README.md

+# accepts
+
+[![NPM Version][npm-version-image]][npm-url]
+[![NPM Downloads][npm-downloads-image]][npm-url]
+[![Node.js Version][node-version-image]][node-version-url]
+[![Build Status][travis-image]][travis-url]
+[![Test Coverage][coveralls-image]][coveralls-url]
+
+Higher level content negotiation based on [negotiator](https://www.npmjs.com/package/negotiator).
+Extracted from [koa](https://www.npmjs.com/package/koa) for general use.
+
+In addition to negotiator, it allows:
+
+- Allows types as an array or arguments list, ie `(['text/html', 'application/json'])`
+  as well as `('text/html', 'application/json')`.
+- Allows type shorthands such as `json`.
+- Returns `false` when no types match
+- Treats non-existent headers as `*`
+
+## Installation
+
+This is a [Node.js](https://nodejs.org/en/) module available through the
+[npm registry](https://www.npmjs.com/). Installation is done using the
+[`npm install` command](https://docs.npmjs.com/getting-started/installing-npm-packages-locally):
+
+```sh
+$ npm install accepts
+```
+
+## API
+
+<!-- eslint-disable no-unused-vars -->
+
+```js
+var accepts = require('accepts')
+```
+
+### accepts(req)
+
+Create a new `Accepts` object for the given `req`.
+
+#### .charset(charsets)
+
+Return the first accepted charset. If nothing in `charsets` is accepted,
+then `false` is returned.
+
+#### .charsets()
+
+Return the charsets that the request accepts, in the order of the client's
+preference (most preferred first).
+
+#### .encoding(encodings)
+
+Return the first accepted encoding. If nothing in `encodings` is accepted,
+then `false` is returned.
+
+#### .encodings()
+
+Return the encodings that the request accepts, in the order of the client's
+preference (most preferred first).
+
+#### .language(languages)
+
+Return the first accepted language. If nothing in `languages` is accepted,
+then `false` is returned.
+
+#### .languages()
+
+Return the languages that the request accepts, in the order of the client's
+preference (most preferred first).
+
+#### .type(types)
+
+Return the first accepted type (and it is returned as the same text as what
+appears in the `types` array). If nothing in `types` is accepted, then `false`
+is returned.
+
+The `types` array can contain full MIME types or file extensions. Any value
+that is not a full MIME types is passed to `require('mime-types').lookup`.
+
+#### .types()
+
+Return the types that the request accepts, in the order of the client's
+preference (most preferred first).
+
+## Examples
+
+### Simple type negotiation
+
+This simple example shows how to use `accepts` to return a different typed
+respond body based on what the client wants to accept. The server lists it's
+preferences in order and will get back the best match between the client and
+server.
+
+```js
+var accepts = require('accepts')
+var http = require('http')
+
+function app (req, res) {
+  var accept = accepts(req)
+
+  // the order of this list is significant; should be server preferred order
+  switch (accept.type(['json', 'html'])) {
+    case 'json':
+      res.setHeader('Content-Type', 'application/json')
+      res.write('{"hello":"world!"}')
+      break
+    case 'html':
+      res.setHeader('Content-Type', 'text/html')
+      res.write('<b>hello, world!</b>')
+      break
+    default:
+      // the fallback is text/plain, so no need to specify it above
+      res.setHeader('Content-Type', 'text/plain')
+      res.write('hello, world!')
+      break
+  }
+
+  res.end()
+}
+
+http.createServer(app).listen(3000)
+```
+
+You can test this out with the cURL program:
+```sh
+curl -I -H'Accept: text/html' http://localhost:3000/
+```
+
+## License
+
+[MIT](LICENSE)
+
+[coveralls-image]: https://badgen.net/coveralls/c/github/jshttp/accepts/master
+[coveralls-url]: https://coveralls.io/r/jshttp/accepts?branch=master
+[node-version-image]: https://badgen.net/npm/node/accepts
+[node-version-url]: https://nodejs.org/en/download
+[npm-downloads-image]: https://badgen.net/npm/dm/accepts
+[npm-url]: https://npmjs.org/package/accepts
+[npm-version-image]: https://badgen.net/npm/v/accepts
+[travis-image]: https://badgen.net/travis/jshttp/accepts/master
+[travis-url]: https://travis-ci.org/jshttp/accepts

train_app/stack-api/node_modules/accepts/index.js

+/*!
+ * accepts
+ * Copyright(c) 2014 Jonathan Ong
+ * Copyright(c) 2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict'
+
+/**
+ * Module dependencies.
+ * @private
+ */
+
+var Negotiator = require('negotiator')
+var mime = require('mime-types')
+
+/**
+ * Module exports.
+ * @public
+ */
+
+module.exports = Accepts
+
+/**
+ * Create a new Accepts object for the given req.
+ *
+ * @param {object} req
+ * @public
+ */
+
+function Accepts (req) {
+  if (!(this instanceof Accepts)) {
+    return new Accepts(req)
+  }
+
+  this.headers = req.headers
+  this.negotiator = new Negotiator(req)
+}
+
+/**
+ * Check if the given `type(s)` is acceptable, returning
+ * the best match when true, otherwise `undefined`, in which
+ * case you should respond with 406 "Not Acceptable".
+ *
+ * The `type` value may be a single mime type string
+ * such as "application/json", the extension name
+ * such as "json" or an array `["json", "html", "text/plain"]`. When a list
+ * or array is given the _best_ match, if any is returned.
+ *
+ * Examples:
+ *
+ *     // Accept: text/html
+ *     this.types('html');
+ *     // => "html"
+ *
+ *     // Accept: text/*, application/json
+ *     this.types('html');
+ *     // => "html"
+ *     this.types('text/html');
+ *     // => "text/html"
+ *     this.types('json', 'text');
+ *     // => "json"
+ *     this.types('application/json');
+ *     // => "application/json"
+ *
+ *     // Accept: text/*, application/json
+ *     this.types('image/png');
+ *     this.types('png');
+ *     // => undefined
+ *
+ *     // Accept: text/*;q=.5, application/json
+ *     this.types(['html', 'json']);
+ *     this.types('html', 'json');
+ *     // => "json"
+ *
+ * @param {String|Array} types...
+ * @return {String|Array|Boolean}
+ * @public
+ */
+
+Accepts.prototype.type =
+Accepts.prototype.types = function (types_) {
+  var types = types_
+
+  // support flattened arguments
+  if (types && !Array.isArray(types)) {
+    types = new Array(arguments.length)
+    for (var i = 0; i < types.length; i++) {
+      types[i] = arguments[i]
+    }
+  }
+
+  // no types, return all requested types
+  if (!types || types.length === 0) {
+    return this.negotiator.mediaTypes()
+  }
+
+  // no accept header, return first given type
+  if (!this.headers.accept) {
+    return types[0]
+  }
+
+  var mimes = types.map(extToMime)
+  var accepts = this.negotiator.mediaTypes(mimes.filter(validMime))
+  var first = accepts[0]
+
+  return first
+    ? types[mimes.indexOf(first)]
+    : false
+}
+
+/**
+ * Return accepted encodings or best fit based on `encodings`.
+ *
+ * Given `Accept-Encoding: gzip, deflate`
+ * an array sorted by quality is returned:
+ *
+ *     ['gzip', 'deflate']
+ *
+ * @param {String|Array} encodings...
+ * @return {String|Array}
+ * @public
+ */
+
+Accepts.prototype.encoding =
+Accepts.prototype.encodings = function (encodings_) {
+  var encodings = encodings_
+
+  // support flattened arguments
+  if (encodings && !Array.isArray(encodings)) {
+    encodings = new Array(arguments.length)
+    for (var i = 0; i < encodings.length; i++) {
+      encodings[i] = arguments[i]
+    }
+  }
+
+  // no encodings, return all requested encodings
+  if (!encodings || encodings.length === 0) {
+    return this.negotiator.encodings()
+  }
+
+  return this.negotiator.encodings(encodings)[0] || false
+}
+
+/**
+ * Return accepted charsets or best fit based on `charsets`.
+ *
+ * Given `Accept-Charset: utf-8, iso-8859-1;q=0.2, utf-7;q=0.5`
+ * an array sorted by quality is returned:
+ *
+ *     ['utf-8', 'utf-7', 'iso-8859-1']
+ *
+ * @param {String|Array} charsets...
+ * @return {String|Array}
+ * @public
+ */
+
+Accepts.prototype.charset =
+Accepts.prototype.charsets = function (charsets_) {
+  var charsets = charsets_
+
+  // support flattened arguments
+  if (charsets && !Array.isArray(charsets)) {
+    charsets = new Array(arguments.length)
+    for (var i = 0; i < charsets.length; i++) {
+      charsets[i] = arguments[i]
+    }
+  }
+
+  // no charsets, return all requested charsets
+  if (!charsets || charsets.length === 0) {
+    return this.negotiator.charsets()
+  }
+
+  return this.negotiator.charsets(charsets)[0] || false
+}
+
+/**
+ * Return accepted languages or best fit based on `langs`.
+ *
+ * Given `Accept-Language: en;q=0.8, es, pt`
+ * an array sorted by quality is returned:
+ *
+ *     ['es', 'pt', 'en']
+ *
+ * @param {String|Array} langs...
+ * @return {Array|String}
+ * @public
+ */
+
+Accepts.prototype.lang =
+Accepts.prototype.langs =
+Accepts.prototype.language =
+Accepts.prototype.languages = function (languages_) {
+  var languages = languages_
+
+  // support flattened arguments
+  if (languages && !Array.isArray(languages)) {
+    languages = new Array(arguments.length)
+    for (var i = 0; i < languages.length; i++) {
+      languages[i] = arguments[i]
+    }
+  }
+
+  // no languages, return all requested languages
+  if (!languages || languages.length === 0) {
+    return this.negotiator.languages()
+  }
+
+  return this.negotiator.languages(languages)[0] || false
+}
+
+/**
+ * Convert extnames to mime.
+ *
+ * @param {String} type
+ * @return {String}
+ * @private
+ */
+
+function extToMime (type) {
+  return type.indexOf('/') === -1
+    ? mime.lookup(type)
+    : type
+}
+
+/**
+ * Check if mime is valid.
+ *
+ * @param {String} type
+ * @return {String}
+ * @private
+ */
+
+function validMime (type) {
+  return typeof type === 'string'
+}

train_app/stack-api/node_modules/accepts/package.json

+{
+  "name": "accepts",
+  "description": "Higher-level content negotiation",
+  "version": "1.3.7",
+  "contributors": [
+    "Douglas Christopher Wilson <doug@somethingdoug.com>",
+    "Jonathan Ong <me@jongleberry.com> (http://jongleberry.com)"
+  ],
+  "license": "MIT",
+  "repository": "jshttp/accepts",
+  "dependencies": {
+    "mime-types": "~2.1.24",
+    "negotiator": "0.6.2"
+  },
+  "devDependencies": {
+    "deep-equal": "1.0.1",
+    "eslint": "5.16.0",
+    "eslint-config-standard": "12.0.0",
+    "eslint-plugin-import": "2.17.2",
+    "eslint-plugin-markdown": "1.0.0",
+    "eslint-plugin-node": "8.0.1",
+    "eslint-plugin-promise": "4.1.1",
+    "eslint-plugin-standard": "4.0.0",
+    "mocha": "6.1.4",
+    "nyc": "14.0.0"
+  },
+  "files": [
+    "LICENSE",
+    "HISTORY.md",
+    "index.js"
+  ],
+  "engines": {
+    "node": ">= 0.6"
+  },
+  "scripts": {
+    "lint": "eslint --plugin markdown --ext js,md .",
+    "test": "mocha --reporter spec --check-leaks --bail test/",
+    "test-cov": "nyc --reporter=html --reporter=text npm test",
+    "test-travis": "nyc --reporter=text npm test"
+  },
+  "keywords": [
+    "content",
+    "negotiation",
+    "accept",
+    "accepts"
+  ]
+}

train_app/stack-api/node_modules/append-field/.npmignore

+node_modules/

train_app/stack-api/node_modules/append-field/LICENSE

+The MIT License (MIT)
+
+Copyright (c) 2015 Linus Unnebäck
+
+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.

train_app/stack-api/node_modules/append-field/README.md

+# `append-field`
+
+A [W3C HTML JSON forms spec](http://www.w3.org/TR/html-json-forms/) compliant
+field appender (for lack of a better name). Useful for people implementing
+`application/x-www-form-urlencoded` and `multipart/form-data` parsers.
+
+It works best on objects created with `Object.create(null)`. Otherwise it might
+conflict with variables from the prototype (e.g. `hasOwnProperty`).
+
+## Installation
+
+```sh
+npm install --save append-field
+```
+
+## Usage
+
+```javascript
+var appendField = require('append-field')
+var obj = Object.create(null)
+
+appendField(obj, 'pets[0][species]', 'Dahut')
+appendField(obj, 'pets[0][name]', 'Hypatia')
+appendField(obj, 'pets[1][species]', 'Felis Stultus')
+appendField(obj, 'pets[1][name]', 'Billie')
+
+console.log(obj)
+```
+
+```text
+{ pets:
+   [ { species: 'Dahut', name: 'Hypatia' },
+     { species: 'Felis Stultus', name: 'Billie' } ] }
+```
+
+## API
+
+### `appendField(store, key, value)`
+
+Adds the field named `key` with the value `value` to the object `store`.
+
+## License
+
+MIT

train_app/stack-api/node_modules/append-field/index.js

+var parsePath = require('./lib/parse-path')
+var setValue = require('./lib/set-value')
+
+function appendField (store, key, value) {
+  var steps = parsePath(key)
+
+  steps.reduce(function (context, step) {
+    return setValue(context, step, context[step.key], value)
+  }, store)
+}
+
+module.exports = appendField

train_app/stack-api/node_modules/append-field/lib/parse-path.js

+var reFirstKey = /^[^\[]*/
+var reDigitPath = /^\[(\d+)\]/
+var reNormalPath = /^\[([^\]]+)\]/
+
+function parsePath (key) {
+  function failure () {
+    return [{ type: 'object', key: key, last: true }]
+  }
+
+  var firstKey = reFirstKey.exec(key)[0]
+  if (!firstKey) return failure()
+
+  var len = key.length
+  var pos = firstKey.length
+  var tail = { type: 'object', key: firstKey }
+  var steps = [tail]
+
+  while (pos < len) {
+    var m
+
+    if (key[pos] === '[' && key[pos + 1] === ']') {
+      pos += 2
+      tail.append = true
+      if (pos !== len) return failure()
+      continue
+    }
+
+    m = reDigitPath.exec(key.substring(pos))
+    if (m !== null) {
+      pos += m[0].length
+      tail.nextType = 'array'
+      tail = { type: 'array', key: parseInt(m[1], 10) }
+      steps.push(tail)
+      continue
+    }
+
+    m = reNormalPath.exec(key.substring(pos))
+    if (m !== null) {
+      pos += m[0].length
+      tail.nextType = 'object'
+      tail = { type: 'object', key: m[1] }
+      steps.push(tail)
+      continue
+    }
+
+    return failure()
+  }
+
+  tail.last = true
+  return steps
+}
+
+module.exports = parsePath

train_app/stack-api/node_modules/append-field/lib/set-value.js

+function valueType (value) {
+  if (value === undefined) return 'undefined'
+  if (Array.isArray(value)) return 'array'
+  if (typeof value === 'object') return 'object'
+  return 'scalar'
+}
+
+function setLastValue (context, step, currentValue, entryValue) {
+  switch (valueType(currentValue)) {
+    case 'undefined':
+      if (step.append) {
+        context[step.key] = [entryValue]
+      } else {
+        context[step.key] = entryValue
+      }
+      break
+    case 'array':
+      context[step.key].push(entryValue)
+      break
+    case 'object':
+      return setLastValue(currentValue, { type: 'object', key: '', last: true }, currentValue[''], entryValue)
+    case 'scalar':
+      context[step.key] = [context[step.key], entryValue]
+      break
+  }
+
+  return context
+}
+
+function setValue (context, step, currentValue, entryValue) {
+  if (step.last) return setLastValue(context, step, currentValue, entryValue)
+
+  var obj
+  switch (valueType(currentValue)) {
+    case 'undefined':
+      if (step.nextType === 'array') {
+        context[step.key] = []
+      } else {
+        context[step.key] = Object.create(null)
+      }
+      return context[step.key]
+    case 'object':
+      return context[step.key]
+    case 'array':
+      if (step.nextType === 'array') {
+        return currentValue
+      }
+
+      obj = Object.create(null)
+      context[step.key] = obj
+      currentValue.forEach(function (item, i) {
+        if (item !== undefined) obj['' + i] = item
+      })
+
+      return obj
+    case 'scalar':
+      obj = Object.create(null)
+      obj[''] = currentValue
+      context[step.key] = obj
+      return obj
+  }
+}
+
+module.exports = setValue

train_app/stack-api/node_modules/append-field/package.json

+{
+  "name": "append-field",
+  "version": "1.0.0",
+  "license": "MIT",
+  "author": "Linus Unnebäck <linus@folkdatorn.se>",
+  "main": "index.js",
+  "devDependencies": {
+    "mocha": "^2.2.4",
+    "standard": "^6.0.5",
+    "testdata-w3c-json-form": "^0.2.0"
+  },
+  "scripts": {
+    "test": "standard && mocha"
+  },
+  "repository": {
+    "type": "git",
+    "url": "http://github.com/LinusU/node-append-field.git"
+  }
+}

train_app/stack-api/node_modules/append-field/test/forms.js

+/* eslint-env mocha */
+
+var assert = require('assert')
+var appendField = require('../')
+var testData = require('testdata-w3c-json-form')
+
+describe('Append Field', function () {
+  for (var test of testData) {
+    it('handles ' + test.name, function () {
+      var store = Object.create(null)
+
+      for (var field of test.fields) {
+        appendField(store, field.key, field.value)
+      }
+
+      assert.deepEqual(store, test.expected)
+    })
+  }
+})

train_app/stack-api/node_modules/array-flatten/LICENSE

+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.

train_app/stack-api/node_modules/array-flatten/README.md

+# 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

train_app/stack-api/node_modules/array-flatten/array-flatten.js

+'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)
+}

train_app/stack-api/node_modules/array-flatten/package.json

+{
+  "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"
+  }
+}

train_app/stack-api/node_modules/axios/LICENSE

+Copyright (c) 2014-present Matt Zabriskie
+
+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.

train_app/stack-api/node_modules/axios/SECURITY.md

+# Security Policy
+
+## Reporting a Vulnerability
+
+Please report security issues to jasonsaayman@gmail.com

train_app/stack-api/node_modules/axios/UPGRADE_GUIDE.md

+# Upgrade Guide
+
+### 0.15.x -> 0.16.0
+
+#### `Promise` Type Declarations
+
+The `Promise` type declarations have been removed from the axios typings in favor of the built-in type declarations. If you use axios in a TypeScript project that targets `ES5`, please make sure to include the `es2015.promise` lib. Please see [this post](https://blog.mariusschulz.com/2016/11/25/typescript-2-0-built-in-type-declarations) for details.
+
+### 0.13.x -> 0.14.0
+
+#### TypeScript Definitions
+
+The axios TypeScript definitions have been updated to match the axios API and use the ES2015 module syntax.
+
+Please use the following `import` statement to import axios in TypeScript:
+
+```typescript
+import axios from 'axios';
+
+axios.get('/foo')
+  .then(response => console.log(response))
+  .catch(error => console.log(error));
+```
+
+#### `agent` Config Option
+
+The `agent` config option has been replaced with two new options: `httpAgent` and `httpsAgent`. Please use them instead.
+
+```js
+{
+  // Define a custom agent for HTTP
+  httpAgent: new http.Agent({ keepAlive: true }),
+  // Define a custom agent for HTTPS
+  httpsAgent: new https.Agent({ keepAlive: true })
+}
+```
+
+#### `progress` Config Option
+
+The `progress` config option has been replaced with the `onUploadProgress` and `onDownloadProgress` options.
+
+```js
+{
+  // Define a handler for upload progress events
+  onUploadProgress: function (progressEvent) {
+    // ...
+  },
+
+  // Define a handler for download progress events
+  onDownloadProgress: function (progressEvent) {
+    // ...
+  }
+}
+```
+
+### 0.12.x -> 0.13.0
+
+The `0.13.0` release contains several changes to custom adapters and error handling.
+
+#### Error Handling
+
+Previous to this release an error could either be a server response with bad status code or an actual `Error`. With this release Promise will always reject with an `Error`. In the case that a response was received, the `Error` will also include the response.
+
+```js
+axios.get('/user/12345')
+  .catch((error) => {
+    console.log(error.message);
+    console.log(error.code); // Not always specified
+    console.log(error.config); // The config that was used to make the request
+    console.log(error.response); // Only available if response was received from the server
+  });
+```
+
+#### Request Adapters
+
+This release changes a few things about how request adapters work. Please take note if you are using your own custom adapter.
+
+1. Response transformer is now called outside of adapter.
+2. Request adapter returns a `Promise`.
+
+This means that you no longer need to invoke `transformData` on response data. You will also no longer receive `resolve` and `reject` as arguments in your adapter.
+
+Previous code:
+
+```js
+function myAdapter(resolve, reject, config) {
+  var response = {
+    data: transformData(
+      responseData,
+      responseHeaders,
+      config.transformResponse
+    ),
+    status: request.status,
+    statusText: request.statusText,
+    headers: responseHeaders
+  };
+  settle(resolve, reject, response);
+}
+```
+
+New code:
+
+```js
+function myAdapter(config) {
+  return new Promise(function (resolve, reject) {
+    var response = {
+      data: responseData,
+      status: request.status,
+      statusText: request.statusText,
+      headers: responseHeaders
+    };
+    settle(resolve, reject, response);
+  });
+}
+```
+
+See the related commits for more details:
+- [Response transformers](https://github.com/axios/axios/commit/10eb23865101f9347570552c04e9d6211376e25e)
+- [Request adapter Promise](https://github.com/axios/axios/commit/157efd5615890301824e3121cc6c9d2f9b21f94a)
+
+### 0.5.x -> 0.6.0
+
+The `0.6.0` release contains mostly bug fixes, but there are a couple things to be aware of when upgrading.
+
+#### ES6 Promise Polyfill
+
+Up until the `0.6.0` release ES6 `Promise` was being polyfilled using [es6-promise](https://github.com/jakearchibald/es6-promise). With this release, the polyfill has been removed, and you will need to supply it yourself if your environment needs it.
+
+```js
+require('es6-promise').polyfill();
+var axios = require('axios');
+```
+
+This will polyfill the global environment, and only needs to be done once.
+
+#### `axios.success`/`axios.error`
+
+The `success`, and `error` aliases were deprecated in [0.4.0](https://github.com/axios/axios/blob/master/CHANGELOG.md#040-oct-03-2014). As of this release they have been removed entirely. Instead please use `axios.then`, and `axios.catch` respectively.
+
+```js
+axios.get('some/url')
+  .then(function (res) {
+    /* ... */
+  })
+  .catch(function (err) {
+    /* ... */
+  });
+```
+
+#### UMD
+
+Previous versions of axios shipped with an AMD, CommonJS, and Global build. This has all been rolled into a single UMD build.
+
+```js
+// AMD
+require(['bower_components/axios/dist/axios'], function (axios) {
+  /* ... */
+});
+
+// CommonJS
+var axios = require('axios/dist/axios');
+```

train_app/stack-api/node_modules/axios/index.d.ts

+// TypeScript Version: 3.0
+
+export type AxiosRequestHeaders = Record<string, string>;
+
+export type AxiosResponseHeaders = Record<string, string> & {
+  "set-cookie"?: string[]
+};
+
+export interface AxiosRequestTransformer {
+  (data: any, headers?: AxiosRequestHeaders): any;
+}
+
+export interface AxiosResponseTransformer {
+  (data: any, headers?: AxiosResponseHeaders): any;
+}
+
+export interface AxiosAdapter {
+  (config: AxiosRequestConfig): AxiosPromise<any>;
+}
+
+export interface AxiosBasicCredentials {
+  username: string;
+  password: string;
+}
+
+export interface AxiosProxyConfig {
+  host: string;
+  port: number;
+  auth?: {
+    username: string;
+    password: string;
+  };
+  protocol?: string;
+}
+
+export type Method =
+  | 'get' | 'GET'
+  | 'delete' | 'DELETE'
+  | 'head' | 'HEAD'
+  | 'options' | 'OPTIONS'
+  | 'post' | 'POST'
+  | 'put' | 'PUT'
+  | 'patch' | 'PATCH'
+  | 'purge' | 'PURGE'
+  | 'link' | 'LINK'
+  | 'unlink' | 'UNLINK';
+
+export type ResponseType =
+  | 'arraybuffer'
+  | 'blob'
+  | 'document'
+  | 'json'
+  | 'text'
+  | 'stream';
+
+export interface TransitionalOptions {
+  silentJSONParsing?: boolean;
+  forcedJSONParsing?: boolean;
+  clarifyTimeoutError?: boolean;
+}
+
+export interface AxiosRequestConfig<D = any> {
+  url?: string;
+  method?: Method;
+  baseURL?: string;
+  transformRequest?: AxiosRequestTransformer | AxiosRequestTransformer[];
+  transformResponse?: AxiosResponseTransformer | AxiosResponseTransformer[];
+  headers?: AxiosRequestHeaders;
+  params?: any;
+  paramsSerializer?: (params: any) => string;
+  data?: D;
+  timeout?: number;
+  timeoutErrorMessage?: string;
+  withCredentials?: boolean;
+  adapter?: AxiosAdapter;
+  auth?: AxiosBasicCredentials;
+  responseType?: ResponseType;
+  xsrfCookieName?: string;
+  xsrfHeaderName?: string;
+  onUploadProgress?: (progressEvent: any) => void;
+  onDownloadProgress?: (progressEvent: any) => void;
+  maxContentLength?: number;
+  validateStatus?: ((status: number) => boolean) | null;
+  maxBodyLength?: number;
+  maxRedirects?: number;
+  socketPath?: string | null;
+  httpAgent?: any;
+  httpsAgent?: any;
+  proxy?: AxiosProxyConfig | false;
+  cancelToken?: CancelToken;
+  decompress?: boolean;
+  transitional?: TransitionalOptions;
+  signal?: AbortSignal;
+  insecureHTTPParser?: boolean;
+}
+
+export interface HeadersDefaults {
+  common: AxiosRequestHeaders;
+  delete: AxiosRequestHeaders;
+  get: AxiosRequestHeaders;
+  head: AxiosRequestHeaders;
+  post: AxiosRequestHeaders;
+  put: AxiosRequestHeaders;
+  patch: AxiosRequestHeaders;
+  options?: AxiosRequestHeaders;
+  purge?: AxiosRequestHeaders;
+  link?: AxiosRequestHeaders;
+  unlink?: AxiosRequestHeaders;
+}
+
+export interface AxiosDefaults<D = any> extends Omit<AxiosRequestConfig<D>, 'headers'> {
+  headers: HeadersDefaults;
+}
+
+export interface AxiosResponse<T = unknown, D = any>  {
+  data: T;
+  status: number;
+  statusText: string;
+  headers: AxiosResponseHeaders;
+  config: AxiosRequestConfig<D>;
+  request?: any;
+}
+
+export interface AxiosError<T = unknown, D = any> extends Error {
+  config: AxiosRequestConfig<D>;
+  code?: string;
+  request?: any;
+  response?: AxiosResponse<T, D>;
+  isAxiosError: boolean;
+  toJSON: () => object;
+}
+
+export interface AxiosPromise<T = unknown> extends Promise<AxiosResponse<T>> {
+}
+
+export interface CancelStatic {
+  new (message?: string): Cancel;
+}
+
+export interface Cancel {
+  message: string;
+}
+
+export interface Canceler {
+  (message?: string): void;
+}
+
+export interface CancelTokenStatic {
+  new (executor: (cancel: Canceler) => void): CancelToken;
+  source(): CancelTokenSource;
+}
+
+export interface CancelToken {
+  promise: Promise<Cancel>;
+  reason?: Cancel;
+  throwIfRequested(): void;
+}
+
+export interface CancelTokenSource {
+  token: CancelToken;
+  cancel: Canceler;
+}
+
+export interface AxiosInterceptorManager<V> {
+  use<T = V>(onFulfilled?: (value: V) => T | Promise<T>, onRejected?: (error: any) => any): number;
+  eject(id: number): void;
+}
+
+export class Axios {
+  constructor(config?: AxiosRequestConfig);
+  defaults: AxiosDefaults;
+  interceptors: {
+    request: AxiosInterceptorManager<AxiosRequestConfig>;
+    response: AxiosInterceptorManager<AxiosResponse>;
+  };
+  getUri(config?: AxiosRequestConfig): string;
+  request<T = unknown, R = AxiosResponse<T>, D = any>(config: AxiosRequestConfig<D>): Promise<R>;
+  get<T = unknown, R = AxiosResponse<T>, D = any>(url: string, config?: AxiosRequestConfig<D>): Promise<R>;
+  delete<T = unknown, R = AxiosResponse<T>, D = any>(url: string, config?: AxiosRequestConfig<D>): Promise<R>;
+  head<T = unknown, R = AxiosResponse<T>, D = any>(url: string, config?: AxiosRequestConfig<D>): Promise<R>;
+  options<T = unknown, R = AxiosResponse<T>, D = any>(url: string, config?: AxiosRequestConfig<D>): Promise<R>;
+  post<T = unknown, R = AxiosResponse<T>, D = any>(url: string, data?: D, config?: AxiosRequestConfig<D>): Promise<R>;
+  put<T = unknown, R = AxiosResponse<T>, D = any>(url: string, data?: D, config?: AxiosRequestConfig<D>): Promise<R>;
+  patch<T = unknown, R = AxiosResponse<T>, D = any>(url: string, data?: D, config?: AxiosRequestConfig<D>): Promise<R>;
+}
+
+export interface AxiosInstance extends Axios {
+  (config: AxiosRequestConfig): AxiosPromise;
+  (url: string, config?: AxiosRequestConfig): AxiosPromise;
+}
+
+export interface AxiosStatic extends AxiosInstance {
+  create(config?: AxiosRequestConfig): AxiosInstance;
+  Cancel: CancelStatic;
+  CancelToken: CancelTokenStatic;
+  Axios: typeof Axios;
+  readonly VERSION: string;
+  isCancel(value: any): boolean;
+  all<T>(values: Array<T | Promise<T>>): Promise<T[]>;
+  spread<T, R>(callback: (...args: T[]) => R): (array: T[]) => R;
+  isAxiosError(payload: any): payload is AxiosError;
+}
+
+declare const axios: AxiosStatic;
+
+export default axios;

train_app/stack-api/node_modules/axios/index.js

+module.exports = require('./lib/axios');
\ No newline at end of file

train_app/stack-api/node_modules/axios/lib/adapters/README.md

+# axios // adapters
+
+The modules under `adapters/` are modules that handle dispatching a request and settling a returned `Promise` once a response is received.
+
+## Example
+
+```js
+var settle = require('./../core/settle');
+
+module.exports = function myAdapter(config) {
+  // At this point:
+  //  - config has been merged with defaults
+  //  - request transformers have already run
+  //  - request interceptors have already run
+  
+  // Make the request using config provided
+  // Upon response settle the Promise
+
+  return new Promise(function(resolve, reject) {
+  
+    var response = {
+      data: responseData,
+      status: request.status,
+      statusText: request.statusText,
+      headers: responseHeaders,
+      config: config,
+      request: request
+    };
+
+    settle(resolve, reject, response);
+
+    // From here:
+    //  - response transformers will run
+    //  - response interceptors will run
+  });
+}
+```

train_app/stack-api/node_modules/axios/lib/adapters/xhr.js

+'use strict';
+
+var utils = require('./../utils');
+var settle = require('./../core/settle');
+var cookies = require('./../helpers/cookies');
+var buildURL = require('./../helpers/buildURL');
+var buildFullPath = require('../core/buildFullPath');
+var parseHeaders = require('./../helpers/parseHeaders');
+var isURLSameOrigin = require('./../helpers/isURLSameOrigin');
+var createError = require('../core/createError');
+var defaults = require('../defaults');
+var Cancel = require('../cancel/Cancel');
+
+module.exports = function xhrAdapter(config) {
+  return new Promise(function dispatchXhrRequest(resolve, reject) {
+    var requestData = config.data;
+    var requestHeaders = config.headers;
+    var responseType = config.responseType;
+    var onCanceled;
+    function done() {
+      if (config.cancelToken) {
+        config.cancelToken.unsubscribe(onCanceled);
+      }
+
+      if (config.signal) {
+        config.signal.removeEventListener('abort', onCanceled);
+      }
+    }
+
+    if (utils.isFormData(requestData)) {
+      delete requestHeaders['Content-Type']; // Let the browser set it
+    }
+
+    var request = new XMLHttpRequest();
+
+    // HTTP basic authentication
+    if (config.auth) {
+      var username = config.auth.username || '';
+      var password = config.auth.password ? unescape(encodeURIComponent(config.auth.password)) : '';
+      requestHeaders.Authorization = 'Basic ' + btoa(username + ':' + password);
+    }
+
+    var fullPath = buildFullPath(config.baseURL, config.url);
+    request.open(config.method.toUpperCase(), buildURL(fullPath, config.params, config.paramsSerializer), true);
+
+    // Set the request timeout in MS
+    request.timeout = config.timeout;
+
+    function onloadend() {
+      if (!request) {
+        return;
+      }
+      // Prepare the response
+      var responseHeaders = 'getAllResponseHeaders' in request ? parseHeaders(request.getAllResponseHeaders()) : null;
+      var responseData = !responseType || responseType === 'text' ||  responseType === 'json' ?
+        request.responseText : request.response;
+      var response = {
+        data: responseData,
+        status: request.status,
+        statusText: request.statusText,
+        headers: responseHeaders,
+        config: config,
+        request: request
+      };
+
+      settle(function _resolve(value) {
+        resolve(value);
+        done();
+      }, function _reject(err) {
+        reject(err);
+        done();
+      }, response);
+
+      // Clean up request
+      request = null;
+    }
+
+    if ('onloadend' in request) {
+      // Use onloadend if available
+      request.onloadend = onloadend;
+    } else {
+      // Listen for ready state to emulate onloadend
+      request.onreadystatechange = function handleLoad() {
+        if (!request || request.readyState !== 4) {
+          return;
+        }
+
+        // The request errored out and we didn't get a response, this will be
+        // handled by onerror instead
+        // With one exception: request that using file: protocol, most browsers
+        // will return status as 0 even though it's a successful request
+        if (request.status === 0 && !(request.responseURL && request.responseURL.indexOf('file:') === 0)) {
+          return;
+        }
+        // readystate handler is calling before onerror or ontimeout handlers,
+        // so we should call onloadend on the next 'tick'
+        setTimeout(onloadend);
+      };
+    }
+
+    // Handle browser request cancellation (as opposed to a manual cancellation)
+    request.onabort = function handleAbort() {
+      if (!request) {
+        return;
+      }
+
+      reject(createError('Request aborted', config, 'ECONNABORTED', request));
+
+      // Clean up request
+      request = null;
+    };
+
+    // Handle low level network errors
+    request.onerror = function handleError() {
+      // Real errors are hidden from us by the browser
+      // onerror should only fire if it's a network error
+      reject(createError('Network Error', config, null, request));
+
+      // Clean up request
+      request = null;
+    };
+
+    // Handle timeout
+    request.ontimeout = function handleTimeout() {
+      var timeoutErrorMessage = config.timeout ? 'timeout of ' + config.timeout + 'ms exceeded' : 'timeout exceeded';
+      var transitional = config.transitional || defaults.transitional;
+      if (config.timeoutErrorMessage) {
+        timeoutErrorMessage = config.timeoutErrorMessage;
+      }
+      reject(createError(
+        timeoutErrorMessage,
+        config,
+        transitional.clarifyTimeoutError ? 'ETIMEDOUT' : 'ECONNABORTED',
+        request));
+
+      // Clean up request
+      request = null;
+    };
+
+    // Add xsrf header
+    // This is only done if running in a standard browser environment.
+    // Specifically not if we're in a web worker, or react-native.
+    if (utils.isStandardBrowserEnv()) {
+      // Add xsrf header
+      var xsrfValue = (config.withCredentials || isURLSameOrigin(fullPath)) && config.xsrfCookieName ?
+        cookies.read(config.xsrfCookieName) :
+        undefined;
+
+      if (xsrfValue) {
+        requestHeaders[config.xsrfHeaderName] = xsrfValue;
+      }
+    }
+
+    // Add headers to the request
+    if ('setRequestHeader' in request) {
+      utils.forEach(requestHeaders, function setRequestHeader(val, key) {
+        if (typeof requestData === 'undefined' && key.toLowerCase() === 'content-type') {
+          // Remove Content-Type if data is undefined
+          delete requestHeaders[key];
+        } else {
+          // Otherwise add header to the request
+          request.setRequestHeader(key, val);
+        }
+      });
+    }
+
+    // Add withCredentials to request if needed
+    if (!utils.isUndefined(config.withCredentials)) {
+      request.withCredentials = !!config.withCredentials;
+    }
+
+    // Add responseType to request if needed
+    if (responseType && responseType !== 'json') {
+      request.responseType = config.responseType;
+    }
+
+    // Handle progress if needed
+    if (typeof config.onDownloadProgress === 'function') {
+      request.addEventListener('progress', config.onDownloadProgress);
+    }
+
+    // Not all browsers support upload events
+    if (typeof config.onUploadProgress === 'function' && request.upload) {
+      request.upload.addEventListener('progress', config.onUploadProgress);
+    }
+
+    if (config.cancelToken || config.signal) {
+      // Handle cancellation
+      // eslint-disable-next-line func-names
+      onCanceled = function(cancel) {
+        if (!request) {
+          return;
+        }
+        reject(!cancel || (cancel && cancel.type) ? new Cancel('canceled') : cancel);
+        request.abort();
+        request = null;
+      };
+
+      config.cancelToken && config.cancelToken.subscribe(onCanceled);
+      if (config.signal) {
+        config.signal.aborted ? onCanceled() : config.signal.addEventListener('abort', onCanceled);
+      }
+    }
+
+    if (!requestData) {
+      requestData = null;
+    }
+
+    // Send the request
+    request.send(requestData);
+  });
+};

train_app/stack-api/node_modules/axios/lib/axios.js

+'use strict';
+
+var utils = require('./utils');
+var bind = require('./helpers/bind');
+var Axios = require('./core/Axios');
+var mergeConfig = require('./core/mergeConfig');
+var defaults = require('./defaults');
+
+/**
+ * Create an instance of Axios
+ *
+ * @param {Object} defaultConfig The default config for the instance
+ * @return {Axios} A new instance of Axios
+ */
+function createInstance(defaultConfig) {
+  var context = new Axios(defaultConfig);
+  var instance = bind(Axios.prototype.request, context);
+
+  // Copy axios.prototype to instance
+  utils.extend(instance, Axios.prototype, context);
+
+  // Copy context to instance
+  utils.extend(instance, context);
+
+  // Factory for creating new instances
+  instance.create = function create(instanceConfig) {
+    return createInstance(mergeConfig(defaultConfig, instanceConfig));
+  };
+
+  return instance;
+}
+
+// Create the default instance to be exported
+var axios = createInstance(defaults);
+
+// Expose Axios class to allow class inheritance
+axios.Axios = Axios;
+
+// Expose Cancel & CancelToken
+axios.Cancel = require('./cancel/Cancel');
+axios.CancelToken = require('./cancel/CancelToken');
+axios.isCancel = require('./cancel/isCancel');
+axios.VERSION = require('./env/data').version;
+
+// Expose all/spread
+axios.all = function all(promises) {
+  return Promise.all(promises);
+};
+axios.spread = require('./helpers/spread');
+
+// Expose isAxiosError
+axios.isAxiosError = require('./helpers/isAxiosError');
+
+module.exports = axios;
+
+// Allow use of default import syntax in TypeScript
+module.exports.default = axios;

train_app/stack-api/node_modules/axios/lib/cancel/Cancel.js

+'use strict';
+
+/**
+ * A `Cancel` is an object that is thrown when an operation is canceled.
+ *
+ * @class
+ * @param {string=} message The message.
+ */
+function Cancel(message) {
+  this.message = message;
+}
+
+Cancel.prototype.toString = function toString() {
+  return 'Cancel' + (this.message ? ': ' + this.message : '');
+};
+
+Cancel.prototype.__CANCEL__ = true;
+
+module.exports = Cancel;

train_app/stack-api/node_modules/axios/lib/cancel/CancelToken.js

+'use strict';
+
+var Cancel = require('./Cancel');
+
+/**
+ * A `CancelToken` is an object that can be used to request cancellation of an operation.
+ *
+ * @class
+ * @param {Function} executor The executor function.
+ */
+function CancelToken(executor) {
+  if (typeof executor !== 'function') {
+    throw new TypeError('executor must be a function.');
+  }
+
+  var resolvePromise;
+
+  this.promise = new Promise(function promiseExecutor(resolve) {
+    resolvePromise = resolve;
+  });
+
+  var token = this;
+
+  // eslint-disable-next-line func-names
+  this.promise.then(function(cancel) {
+    if (!token._listeners) return;
+
+    var i;
+    var l = token._listeners.length;
+
+    for (i = 0; i < l; i++) {
+      token._listeners[i](cancel);
+    }
+    token._listeners = null;
+  });
+
+  // eslint-disable-next-line func-names
+  this.promise.then = function(onfulfilled) {
+    var _resolve;
+    // eslint-disable-next-line func-names
+    var promise = new Promise(function(resolve) {
+      token.subscribe(resolve);
+      _resolve = resolve;
+    }).then(onfulfilled);
+
+    promise.cancel = function reject() {
+      token.unsubscribe(_resolve);
+    };
+
+    return promise;
+  };
+
+  executor(function cancel(message) {
+    if (token.reason) {
+      // Cancellation has already been requested
+      return;
+    }
+
+    token.reason = new Cancel(message);
+    resolvePromise(token.reason);
+  });
+}
+
+/**
+ * Throws a `Cancel` if cancellation has been requested.
+ */
+CancelToken.prototype.throwIfRequested = function throwIfRequested() {
+  if (this.reason) {
+    throw this.reason;
+  }
+};
+
+/**
+ * Subscribe to the cancel signal
+ */
+
+CancelToken.prototype.subscribe = function subscribe(listener) {
+  if (this.reason) {
+    listener(this.reason);
+    return;
+  }
+
+  if (this._listeners) {
+    this._listeners.push(listener);
+  } else {
+    this._listeners = [listener];
+  }
+};
+
+/**
+ * Unsubscribe from the cancel signal
+ */
+
+CancelToken.prototype.unsubscribe = function unsubscribe(listener) {
+  if (!this._listeners) {
+    return;
+  }
+  var index = this._listeners.indexOf(listener);
+  if (index !== -1) {
+    this._listeners.splice(index, 1);
+  }
+};
+
+/**
+ * Returns an object that contains a new `CancelToken` and a function that, when called,
+ * cancels the `CancelToken`.
+ */
+CancelToken.source = function source() {
+  var cancel;
+  var token = new CancelToken(function executor(c) {
+    cancel = c;
+  });
+  return {
+    token: token,
+    cancel: cancel
+  };
+};
+
+module.exports = CancelToken;

train_app/stack-api/node_modules/axios/lib/cancel/isCancel.js

+'use strict';
+
+module.exports = function isCancel(value) {
+  return !!(value && value.__CANCEL__);
+};

train_app/stack-api/node_modules/axios/lib/core/Axios.js

+'use strict';
+
+var utils = require('./../utils');
+var buildURL = require('../helpers/buildURL');
+var InterceptorManager = require('./InterceptorManager');
+var dispatchRequest = require('./dispatchRequest');
+var mergeConfig = require('./mergeConfig');
+var validator = require('../helpers/validator');
+
+var validators = validator.validators;
+/**
+ * Create a new instance of Axios
+ *
+ * @param {Object} instanceConfig The default config for the instance
+ */
+function Axios(instanceConfig) {
+  this.defaults = instanceConfig;
+  this.interceptors = {
+    request: new InterceptorManager(),
+    response: new InterceptorManager()
+  };
+}
+
+/**
+ * Dispatch a request
+ *
+ * @param {Object} config The config specific for this request (merged with this.defaults)
+ */
+Axios.prototype.request = function request(config) {
+  /*eslint no-param-reassign:0*/
+  // Allow for axios('example/url'[, config]) a la fetch API
+  if (typeof config === 'string') {
+    config = arguments[1] || {};
+    config.url = arguments[0];
+  } else {
+    config = config || {};
+  }
+
+  config = mergeConfig(this.defaults, config);
+
+  // Set config.method
+  if (config.method) {
+    config.method = config.method.toLowerCase();
+  } else if (this.defaults.method) {
+    config.method = this.defaults.method.toLowerCase();
+  } else {
+    config.method = 'get';
+  }
+
+  var transitional = config.transitional;
+
+  if (transitional !== undefined) {
+    validator.assertOptions(transitional, {
+      silentJSONParsing: validators.transitional(validators.boolean),
+      forcedJSONParsing: validators.transitional(validators.boolean),
+      clarifyTimeoutError: validators.transitional(validators.boolean)
+    }, false);
+  }
+
+  // filter out skipped interceptors
+  var requestInterceptorChain = [];
+  var synchronousRequestInterceptors = true;
+  this.interceptors.request.forEach(function unshiftRequestInterceptors(interceptor) {
+    if (typeof interceptor.runWhen === 'function' && interceptor.runWhen(config) === false) {
+      return;
+    }
+
+    synchronousRequestInterceptors = synchronousRequestInterceptors && interceptor.synchronous;
+
+    requestInterceptorChain.unshift(interceptor.fulfilled, interceptor.rejected);
+  });
+
+  var responseInterceptorChain = [];
+  this.interceptors.response.forEach(function pushResponseInterceptors(interceptor) {
+    responseInterceptorChain.push(interceptor.fulfilled, interceptor.rejected);
+  });
+
+  var promise;
+
+  if (!synchronousRequestInterceptors) {
+    var chain = [dispatchRequest, undefined];
+
+    Array.prototype.unshift.apply(chain, requestInterceptorChain);
+    chain = chain.concat(responseInterceptorChain);
+
+    promise = Promise.resolve(config);
+    while (chain.length) {
+      promise = promise.then(chain.shift(), chain.shift());
+    }
+
+    return promise;
+  }
+
+
+  var newConfig = config;
+  while (requestInterceptorChain.length) {
+    var onFulfilled = requestInterceptorChain.shift();
+    var onRejected = requestInterceptorChain.shift();
+    try {
+      newConfig = onFulfilled(newConfig);
+    } catch (error) {
+      onRejected(error);
+      break;
+    }
+  }
+
+  try {
+    promise = dispatchRequest(newConfig);
+  } catch (error) {
+    return Promise.reject(error);
+  }
+
+  while (responseInterceptorChain.length) {
+    promise = promise.then(responseInterceptorChain.shift(), responseInterceptorChain.shift());
+  }
+
+  return promise;
+};
+
+Axios.prototype.getUri = function getUri(config) {
+  config = mergeConfig(this.defaults, config);
+  return buildURL(config.url, config.params, config.paramsSerializer).replace(/^\?/, '');
+};
+
+// Provide aliases for supported request methods
+utils.forEach(['delete', 'get', 'head', 'options'], function forEachMethodNoData(method) {
+  /*eslint func-names:0*/
+  Axios.prototype[method] = function(url, config) {
+    return this.request(mergeConfig(config || {}, {
+      method: method,
+      url: url,
+      data: (config || {}).data
+    }));
+  };
+});
+
+utils.forEach(['post', 'put', 'patch'], function forEachMethodWithData(method) {
+  /*eslint func-names:0*/
+  Axios.prototype[method] = function(url, data, config) {
+    return this.request(mergeConfig(config || {}, {
+      method: method,
+      url: url,
+      data: data
+    }));
+  };
+});
+
+module.exports = Axios;

train_app/stack-api/node_modules/axios/lib/core/InterceptorManager.js

+'use strict';
+
+var utils = require('./../utils');
+
+function InterceptorManager() {
+  this.handlers = [];
+}
+
+/**
+ * Add a new interceptor to the stack
+ *
+ * @param {Function} fulfilled The function to handle `then` for a `Promise`
+ * @param {Function} rejected The function to handle `reject` for a `Promise`
+ *
+ * @return {Number} An ID used to remove interceptor later
+ */
+InterceptorManager.prototype.use = function use(fulfilled, rejected, options) {
+  this.handlers.push({
+    fulfilled: fulfilled,
+    rejected: rejected,
+    synchronous: options ? options.synchronous : false,
+    runWhen: options ? options.runWhen : null
+  });
+  return this.handlers.length - 1;
+};
+
+/**
+ * Remove an interceptor from the stack
+ *
+ * @param {Number} id The ID that was returned by `use`
+ */
+InterceptorManager.prototype.eject = function eject(id) {
+  if (this.handlers[id]) {
+    this.handlers[id] = null;
+  }
+};
+
+/**
+ * Iterate over all the registered interceptors
+ *
+ * This method is particularly useful for skipping over any
+ * interceptors that may have become `null` calling `eject`.
+ *
+ * @param {Function} fn The function to call for each interceptor
+ */
+InterceptorManager.prototype.forEach = function forEach(fn) {
+  utils.forEach(this.handlers, function forEachHandler(h) {
+    if (h !== null) {
+      fn(h);
+    }
+  });
+};
+
+module.exports = InterceptorManager;

train_app/stack-api/node_modules/axios/lib/core/README.md

+# axios // core
+
+The modules found in `core/` should be modules that are specific to the domain logic of axios. These modules would most likely not make sense to be consumed outside of the axios module, as their logic is too specific. Some examples of core modules are:
+
+- Dispatching requests
+  - Requests sent via `adapters/` (see lib/adapters/README.md)
+- Managing interceptors
+- Handling config

train_app/stack-api/node_modules/axios/lib/core/buildFullPath.js

+'use strict';
+
+var isAbsoluteURL = require('../helpers/isAbsoluteURL');
+var combineURLs = require('../helpers/combineURLs');
+
+/**
+ * Creates a new URL by combining the baseURL with the requestedURL,
+ * only when the requestedURL is not already an absolute URL.
+ * If the requestURL is absolute, this function returns the requestedURL untouched.
+ *
+ * @param {string} baseURL The base URL
+ * @param {string} requestedURL Absolute or relative URL to combine
+ * @returns {string} The combined full path
+ */
+module.exports = function buildFullPath(baseURL, requestedURL) {
+  if (baseURL && !isAbsoluteURL(requestedURL)) {
+    return combineURLs(baseURL, requestedURL);
+  }
+  return requestedURL;
+};

train_app/stack-api/node_modules/axios/lib/core/createError.js

+'use strict';
+
+var enhanceError = require('./enhanceError');
+
+/**
+ * Create an Error with the specified message, config, error code, request and response.
+ *
+ * @param {string} message The error message.
+ * @param {Object} config The config.
+ * @param {string} [code] The error code (for example, 'ECONNABORTED').
+ * @param {Object} [request] The request.
+ * @param {Object} [response] The response.
+ * @returns {Error} The created error.
+ */
+module.exports = function createError(message, config, code, request, response) {
+  var error = new Error(message);
+  return enhanceError(error, config, code, request, response);
+};

train_app/stack-api/node_modules/axios/lib/core/dispatchRequest.js

+'use strict';
+
+var utils = require('./../utils');
+var transformData = require('./transformData');
+var isCancel = require('../cancel/isCancel');
+var defaults = require('../defaults');
+var Cancel = require('../cancel/Cancel');
+
+/**
+ * Throws a `Cancel` if cancellation has been requested.
+ */
+function throwIfCancellationRequested(config) {
+  if (config.cancelToken) {
+    config.cancelToken.throwIfRequested();
+  }
+
+  if (config.signal && config.signal.aborted) {
+    throw new Cancel('canceled');
+  }
+}
+
+/**
+ * Dispatch a request to the server using the configured adapter.
+ *
+ * @param {object} config The config that is to be used for the request
+ * @returns {Promise} The Promise to be fulfilled
+ */
+module.exports = function dispatchRequest(config) {
+  throwIfCancellationRequested(config);
+
+  // Ensure headers exist
+  config.headers = config.headers || {};
+
+  // Transform request data
+  config.data = transformData.call(
+    config,
+    config.data,
+    config.headers,
+    config.transformRequest
+  );
+
+  // Flatten headers
+  config.headers = utils.merge(
+    config.headers.common || {},
+    config.headers[config.method] || {},
+    config.headers
+  );
+
+  utils.forEach(
+    ['delete', 'get', 'head', 'post', 'put', 'patch', 'common'],
+    function cleanHeaderConfig(method) {
+      delete config.headers[method];
+    }
+  );
+
+  var adapter = config.adapter || defaults.adapter;
+
+  return adapter(config).then(function onAdapterResolution(response) {
+    throwIfCancellationRequested(config);
+
+    // Transform response data
+    response.data = transformData.call(
+      config,
+      response.data,
+      response.headers,
+      config.transformResponse
+    );
+
+    return response;
+  }, function onAdapterRejection(reason) {
+    if (!isCancel(reason)) {
+      throwIfCancellationRequested(config);
+
+      // Transform response data
+      if (reason && reason.response) {
+        reason.response.data = transformData.call(
+          config,
+          reason.response.data,
+          reason.response.headers,
+          config.transformResponse
+        );
+      }
+    }
+
+    return Promise.reject(reason);
+  });
+};

train_app/stack-api/node_modules/axios/lib/core/enhanceError.js

+'use strict';
+
+/**
+ * Update an Error with the specified config, error code, and response.
+ *
+ * @param {Error} error The error to update.
+ * @param {Object} config The config.
+ * @param {string} [code] The error code (for example, 'ECONNABORTED').
+ * @param {Object} [request] The request.
+ * @param {Object} [response] The response.
+ * @returns {Error} The error.
+ */
+module.exports = function enhanceError(error, config, code, request, response) {
+  error.config = config;
+  if (code) {
+    error.code = code;
+  }
+
+  error.request = request;
+  error.response = response;
+  error.isAxiosError = true;
+
+  error.toJSON = function toJSON() {
+    return {
+      // Standard
+      message: this.message,
+      name: this.name,
+      // Microsoft
+      description: this.description,
+      number: this.number,
+      // Mozilla
+      fileName: this.fileName,
+      lineNumber: this.lineNumber,
+      columnNumber: this.columnNumber,
+      stack: this.stack,
+      // Axios
+      config: this.config,
+      code: this.code,
+      status: this.response && this.response.status ? this.response.status : null
+    };
+  };
+  return error;
+};

train_app/stack-api/node_modules/axios/lib/core/mergeConfig.js

+'use strict';
+
+var utils = require('../utils');
+
+/**
+ * Config-specific merge-function which creates a new config-object
+ * by merging two configuration objects together.
+ *
+ * @param {Object} config1
+ * @param {Object} config2
+ * @returns {Object} New object resulting from merging config2 to config1
+ */
+module.exports = function mergeConfig(config1, config2) {
+  // eslint-disable-next-line no-param-reassign
+  config2 = config2 || {};
+  var config = {};
+
+  function getMergedValue(target, source) {
+    if (utils.isPlainObject(target) && utils.isPlainObject(source)) {
+      return utils.merge(target, source);
+    } else if (utils.isPlainObject(source)) {
+      return utils.merge({}, source);
+    } else if (utils.isArray(source)) {
+      return source.slice();
+    }
+    return source;
+  }
+
+  // eslint-disable-next-line consistent-return
+  function mergeDeepProperties(prop) {
+    if (!utils.isUndefined(config2[prop])) {
+      return getMergedValue(config1[prop], config2[prop]);
+    } else if (!utils.isUndefined(config1[prop])) {
+      return getMergedValue(undefined, config1[prop]);
+    }
+  }
+
+  // eslint-disable-next-line consistent-return
+  function valueFromConfig2(prop) {
+    if (!utils.isUndefined(config2[prop])) {
+      return getMergedValue(undefined, config2[prop]);
+    }
+  }
+
+  // eslint-disable-next-line consistent-return
+  function defaultToConfig2(prop) {
+    if (!utils.isUndefined(config2[prop])) {
+      return getMergedValue(undefined, config2[prop]);
+    } else if (!utils.isUndefined(config1[prop])) {
+      return getMergedValue(undefined, config1[prop]);
+    }
+  }
+
+  // eslint-disable-next-line consistent-return
+  function mergeDirectKeys(prop) {
+    if (prop in config2) {
+      return getMergedValue(config1[prop], config2[prop]);
+    } else if (prop in config1) {
+      return getMergedValue(undefined, config1[prop]);
+    }
+  }
+
+  var mergeMap = {
+    'url': valueFromConfig2,
+    'method': valueFromConfig2,
+    'data': valueFromConfig2,
+    'baseURL': defaultToConfig2,
+    'transformRequest': defaultToConfig2,
+    'transformResponse': defaultToConfig2,
+    'paramsSerializer': defaultToConfig2,
+    'timeout': defaultToConfig2,
+    'timeoutMessage': defaultToConfig2,
+    'withCredentials': defaultToConfig2,
+    'adapter': defaultToConfig2,
+    'responseType': defaultToConfig2,
+    'xsrfCookieName': defaultToConfig2,
+    'xsrfHeaderName': defaultToConfig2,
+    'onUploadProgress': defaultToConfig2,
+    'onDownloadProgress': defaultToConfig2,
+    'decompress': defaultToConfig2,
+    'maxContentLength': defaultToConfig2,
+    'maxBodyLength': defaultToConfig2,
+    'transport': defaultToConfig2,
+    'httpAgent': defaultToConfig2,
+    'httpsAgent': defaultToConfig2,
+    'cancelToken': defaultToConfig2,
+    'socketPath': defaultToConfig2,
+    'responseEncoding': defaultToConfig2,
+    'validateStatus': mergeDirectKeys
+  };
+
+  utils.forEach(Object.keys(config1).concat(Object.keys(config2)), function computeConfigValue(prop) {
+    var merge = mergeMap[prop] || mergeDeepProperties;
+    var configValue = merge(prop);
+    (utils.isUndefined(configValue) && merge !== mergeDirectKeys) || (config[prop] = configValue);
+  });
+
+  return config;
+};

train_app/stack-api/node_modules/axios/lib/core/settle.js

+'use strict';
+
+var createError = require('./createError');
+
+/**
+ * Resolve or reject a Promise based on response status.
+ *
+ * @param {Function} resolve A function that resolves the promise.
+ * @param {Function} reject A function that rejects the promise.
+ * @param {object} response The response.
+ */
+module.exports = function settle(resolve, reject, response) {
+  var validateStatus = response.config.validateStatus;
+  if (!response.status || !validateStatus || validateStatus(response.status)) {
+    resolve(response);
+  } else {
+    reject(createError(
+      'Request failed with status code ' + response.status,
+      response.config,
+      null,
+      response.request,
+      response
+    ));
+  }
+};

train_app/stack-api/node_modules/axios/lib/core/transformData.js

+'use strict';
+
+var utils = require('./../utils');
+var defaults = require('./../defaults');
+
+/**
+ * Transform the data for a request or a response
+ *
+ * @param {Object|String} data The data to be transformed
+ * @param {Array} headers The headers for the request or response
+ * @param {Array|Function} fns A single function or Array of functions
+ * @returns {*} The resulting transformed data
+ */
+module.exports = function transformData(data, headers, fns) {
+  var context = this || defaults;
+  /*eslint no-param-reassign:0*/
+  utils.forEach(fns, function transform(fn) {
+    data = fn.call(context, data, headers);
+  });
+
+  return data;
+};

train_app/stack-api/node_modules/axios/lib/defaults.js

+'use strict';
+
+var utils = require('./utils');
+var normalizeHeaderName = require('./helpers/normalizeHeaderName');
+var enhanceError = require('./core/enhanceError');
+
+var DEFAULT_CONTENT_TYPE = {
+  'Content-Type': 'application/x-www-form-urlencoded'
+};
+
+function setContentTypeIfUnset(headers, value) {
+  if (!utils.isUndefined(headers) && utils.isUndefined(headers['Content-Type'])) {
+    headers['Content-Type'] = value;
+  }
+}
+
+function getDefaultAdapter() {
+  var adapter;
+  if (typeof XMLHttpRequest !== 'undefined') {
+    // For browsers use XHR adapter
+    adapter = require('./adapters/xhr');
+  } else if (typeof process !== 'undefined' && Object.prototype.toString.call(process) === '[object process]') {
+    // For node use HTTP adapter
+    adapter = require('./adapters/http');
+  }
+  return adapter;
+}
+
+function stringifySafely(rawValue, parser, encoder) {
+  if (utils.isString(rawValue)) {
+    try {
+      (parser || JSON.parse)(rawValue);
+      return utils.trim(rawValue);
+    } catch (e) {
+      if (e.name !== 'SyntaxError') {
+        throw e;
+      }
+    }
+  }
+
+  return (encoder || JSON.stringify)(rawValue);
+}
+
+var defaults = {
+
+  transitional: {
+    silentJSONParsing: true,
+    forcedJSONParsing: true,
+    clarifyTimeoutError: false
+  },
+
+  adapter: getDefaultAdapter(),
+
+  transformRequest: [function transformRequest(data, headers) {
+    normalizeHeaderName(headers, 'Accept');
+    normalizeHeaderName(headers, 'Content-Type');
+
+    if (utils.isFormData(data) ||
+      utils.isArrayBuffer(data) ||
+      utils.isBuffer(data) ||
+      utils.isStream(data) ||
+      utils.isFile(data) ||
+      utils.isBlob(data)
+    ) {
+      return data;
+    }
+    if (utils.isArrayBufferView(data)) {
+      return data.buffer;
+    }
+    if (utils.isURLSearchParams(data)) {
+      setContentTypeIfUnset(headers, 'application/x-www-form-urlencoded;charset=utf-8');
+      return data.toString();
+    }
+    if (utils.isObject(data) || (headers && headers['Content-Type'] === 'application/json')) {
+      setContentTypeIfUnset(headers, 'application/json');
+      return stringifySafely(data);
+    }
+    return data;
+  }],
+
+  transformResponse: [function transformResponse(data) {
+    var transitional = this.transitional || defaults.transitional;
+    var silentJSONParsing = transitional && transitional.silentJSONParsing;
+    var forcedJSONParsing = transitional && transitional.forcedJSONParsing;
+    var strictJSONParsing = !silentJSONParsing && this.responseType === 'json';
+
+    if (strictJSONParsing || (forcedJSONParsing && utils.isString(data) && data.length)) {
+      try {
+        return JSON.parse(data);
+      } catch (e) {
+        if (strictJSONParsing) {
+          if (e.name === 'SyntaxError') {
+            throw enhanceError(e, this, 'E_JSON_PARSE');
+          }
+          throw e;
+        }
+      }
+    }
+
+    return data;
+  }],
+
+  /**
+   * A timeout in milliseconds to abort a request. If set to 0 (default) a
+   * timeout is not created.
+   */
+  timeout: 0,
+
+  xsrfCookieName: 'XSRF-TOKEN',
+  xsrfHeaderName: 'X-XSRF-TOKEN',
+
+  maxContentLength: -1,
+  maxBodyLength: -1,
+
+  validateStatus: function validateStatus(status) {
+    return status >= 200 && status < 300;
+  },
+
+  headers: {
+    common: {
+      'Accept': 'application/json, text/plain, */*'
+    }
+  }
+};
+
+utils.forEach(['delete', 'get', 'head'], function forEachMethodNoData(method) {
+  defaults.headers[method] = {};
+});
+
+utils.forEach(['post', 'put', 'patch'], function forEachMethodWithData(method) {
+  defaults.headers[method] = utils.merge(DEFAULT_CONTENT_TYPE);
+});
+
+module.exports = defaults;

train_app/stack-api/node_modules/axios/lib/env/README.md

+# axios // env
+
+The `data.js` file is updated automatically when the package version is upgrading. Please do not edit it manually.

train_app/stack-api/node_modules/axios/lib/env/data.js

+module.exports = {
+  "version": "0.23.0"
+};
\ No newline at end of file

train_app/stack-api/node_modules/axios/lib/helpers/README.md

+# axios // helpers
+
+The modules found in `helpers/` should be generic modules that are _not_ specific to the domain logic of axios. These modules could theoretically be published to npm on their own and consumed by other modules or apps. Some examples of generic modules are things like:
+
+- Browser polyfills
+- Managing cookies
+- Parsing HTTP headers

train_app/stack-api/node_modules/axios/lib/helpers/bind.js

+'use strict';
+
+module.exports = function bind(fn, thisArg) {
+  return function wrap() {
+    var args = new Array(arguments.length);
+    for (var i = 0; i < args.length; i++) {
+      args[i] = arguments[i];
+    }
+    return fn.apply(thisArg, args);
+  };
+};

train_app/stack-api/node_modules/axios/lib/helpers/buildURL.js

+'use strict';
+
+var utils = require('./../utils');
+
+function encode(val) {
+  return encodeURIComponent(val).
+    replace(/%3A/gi, ':').
+    replace(/%24/g, '$').
+    replace(/%2C/gi, ',').
+    replace(/%20/g, '+').
+    replace(/%5B/gi, '[').
+    replace(/%5D/gi, ']');
+}
+
+/**
+ * Build a URL by appending params to the end
+ *
+ * @param {string} url The base of the url (e.g., http://www.google.com)
+ * @param {object} [params] The params to be appended
+ * @returns {string} The formatted url
+ */
+module.exports = function buildURL(url, params, paramsSerializer) {
+  /*eslint no-param-reassign:0*/
+  if (!params) {
+    return url;
+  }
+
+  var serializedParams;
+  if (paramsSerializer) {
+    serializedParams = paramsSerializer(params);
+  } else if (utils.isURLSearchParams(params)) {
+    serializedParams = params.toString();
+  } else {
+    var parts = [];
+
+    utils.forEach(params, function serialize(val, key) {
+      if (val === null || typeof val === 'undefined') {
+        return;
+      }
+
+      if (utils.isArray(val)) {
+        key = key + '[]';
+      } else {
+        val = [val];
+      }
+
+      utils.forEach(val, function parseValue(v) {
+        if (utils.isDate(v)) {
+          v = v.toISOString();
+        } else if (utils.isObject(v)) {
+          v = JSON.stringify(v);
+        }
+        parts.push(encode(key) + '=' + encode(v));
+      });
+    });
+
+    serializedParams = parts.join('&');
+  }
+
+  if (serializedParams) {
+    var hashmarkIndex = url.indexOf('#');
+    if (hashmarkIndex !== -1) {
+      url = url.slice(0, hashmarkIndex);
+    }
+
+    url += (url.indexOf('?') === -1 ? '?' : '&') + serializedParams;
+  }
+
+  return url;
+};

train_app/stack-api/node_modules/axios/lib/helpers/isAxiosError.js

+'use strict';
+
+/**
+ * Determines whether the payload is an error thrown by Axios
+ *
+ * @param {*} payload The value to test
+ * @returns {boolean} True if the payload is an error thrown by Axios, otherwise false
+ */
+module.exports = function isAxiosError(payload) {
+  return (typeof payload === 'object') && (payload.isAxiosError === true);
+};