initial commit

backend/node_modules/multer/node_modules/media-typer/HISTORY.md

@@ -0,0 +1,22 @@
+0.3.0 / 2014-09-07
+==================
+
+  * Support Node.js 0.6
+  * Throw error when parameter format invalid on parse
+
+0.2.0 / 2014-06-18
+==================
+
+  * Add `typer.format()` to format media types
+
+0.1.0 / 2014-06-17
+==================
+
+  * Accept `req` as argument to `parse`
+  * Accept `res` as argument to `parse`
+  * Parse media type with extra LWS between type and first parameter
+
+0.0.0 / 2014-06-13
+==================
+
+  * Initial implementation

backend/node_modules/multer/node_modules/media-typer/LICENSE

@@ -0,0 +1,22 @@
+(The MIT License)
+
+Copyright (c) 2014 Douglas Christopher Wilson
+
+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.

backend/node_modules/multer/node_modules/media-typer/README.md

@@ -0,0 +1,81 @@
+# media-typer
+
+[![NPM Version][npm-image]][npm-url]
+[![NPM Downloads][downloads-image]][downloads-url]
+[![Node.js Version][node-version-image]][node-version-url]
+[![Build Status][travis-image]][travis-url]
+[![Test Coverage][coveralls-image]][coveralls-url]
+
+Simple RFC 6838 media type parser
+
+## Installation
+
+```sh
+$ npm install media-typer
+```
+
+## API
+
+```js
+var typer = require('media-typer')
+```
+
+### typer.parse(string)
+
+```js
+var obj = typer.parse('image/svg+xml; charset=utf-8')
+```
+
+Parse a media type string. This will return an object with the following
+properties (examples are shown for the string `'image/svg+xml; charset=utf-8'`):
+
+ - `type`: The type of the media type (always lower case). Example: `'image'`
+
+ - `subtype`: The subtype of the media type (always lower case). Example: `'svg'`
+
+ - `suffix`: The suffix of the media type (always lower case). Example: `'xml'`
+
+ - `parameters`: An object of the parameters in the media type (name of parameter always lower case). Example: `{charset: 'utf-8'}`
+
+### typer.parse(req)
+
+```js
+var obj = typer.parse(req)
+```
+
+Parse the `content-type` header from the given `req`. Short-cut for
+`typer.parse(req.headers['content-type'])`.
+
+### typer.parse(res)
+
+```js
+var obj = typer.parse(res)
+```
+
+Parse the `content-type` header set on the given `res`. Short-cut for
+`typer.parse(res.getHeader('content-type'))`.
+
+### typer.format(obj)
+
+```js
+var obj = typer.format({type: 'image', subtype: 'svg', suffix: 'xml'})
+```
+
+Format an object into a media type string. This will return a string of the
+mime type for the given object. For the properties of the object, see the
+documentation for `typer.parse(string)`.
+
+## License
+
+[MIT](LICENSE)
+
+[npm-image]: https://img.shields.io/npm/v/media-typer.svg?style=flat
+[npm-url]: https://npmjs.org/package/media-typer
+[node-version-image]: https://img.shields.io/badge/node.js-%3E%3D_0.6-brightgreen.svg?style=flat
+[node-version-url]: http://nodejs.org/download/
+[travis-image]: https://img.shields.io/travis/jshttp/media-typer.svg?style=flat
+[travis-url]: https://travis-ci.org/jshttp/media-typer
+[coveralls-image]: https://img.shields.io/coveralls/jshttp/media-typer.svg?style=flat
+[coveralls-url]: https://coveralls.io/r/jshttp/media-typer
+[downloads-image]: https://img.shields.io/npm/dm/media-typer.svg?style=flat
+[downloads-url]: https://npmjs.org/package/media-typer

backend/node_modules/multer/node_modules/media-typer/index.js

@@ -0,0 +1,270 @@
+/*!
+ * media-typer
+ * Copyright(c) 2014 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+/**
+ * RegExp to match *( ";" parameter ) in RFC 2616 sec 3.7
+ *
+ * parameter     = token "=" ( token | quoted-string )
+ * token         = 1*<any CHAR except CTLs or separators>
+ * separators    = "(" | ")" | "<" | ">" | "@"
+ *               | "," | ";" | ":" | "\" | <">
+ *               | "/" | "[" | "]" | "?" | "="
+ *               | "{" | "}" | SP | HT
+ * quoted-string = ( <"> *(qdtext | quoted-pair ) <"> )
+ * qdtext        = <any TEXT except <">>
+ * quoted-pair   = "\" CHAR
+ * CHAR          = <any US-ASCII character (octets 0 - 127)>
+ * TEXT          = <any OCTET except CTLs, but including LWS>
+ * LWS           = [CRLF] 1*( SP | HT )
+ * CRLF          = CR LF
+ * CR            = <US-ASCII CR, carriage return (13)>
+ * LF            = <US-ASCII LF, linefeed (10)>
+ * SP            = <US-ASCII SP, space (32)>
+ * SHT           = <US-ASCII HT, horizontal-tab (9)>
+ * CTL           = <any US-ASCII control character (octets 0 - 31) and DEL (127)>
+ * OCTET         = <any 8-bit sequence of data>
+ */
+var paramRegExp = /; *([!#$%&'\*\+\-\.0-9A-Z\^_`a-z\|~]+) *= *("(?:[ !\u0023-\u005b\u005d-\u007e\u0080-\u00ff]|\\[\u0020-\u007e])*"|[!#$%&'\*\+\-\.0-9A-Z\^_`a-z\|~]+) */g;
+var textRegExp = /^[\u0020-\u007e\u0080-\u00ff]+$/
+var tokenRegExp = /^[!#$%&'\*\+\-\.0-9A-Z\^_`a-z\|~]+$/
+
+/**
+ * RegExp to match quoted-pair in RFC 2616
+ *
+ * quoted-pair = "\" CHAR
+ * CHAR        = <any US-ASCII character (octets 0 - 127)>
+ */
+var qescRegExp = /\\([\u0000-\u007f])/g;
+
+/**
+ * RegExp to match chars that must be quoted-pair in RFC 2616
+ */
+var quoteRegExp = /([\\"])/g;
+
+/**
+ * RegExp to match type in RFC 6838
+ *
+ * type-name = restricted-name
+ * subtype-name = restricted-name
+ * restricted-name = restricted-name-first *126restricted-name-chars
+ * restricted-name-first  = ALPHA / DIGIT
+ * restricted-name-chars  = ALPHA / DIGIT / "!" / "#" /
+ *                          "$" / "&" / "-" / "^" / "_"
+ * restricted-name-chars =/ "." ; Characters before first dot always
+ *                              ; specify a facet name
+ * restricted-name-chars =/ "+" ; Characters after last plus always
+ *                              ; specify a structured syntax suffix
+ * ALPHA =  %x41-5A / %x61-7A   ; A-Z / a-z
+ * DIGIT =  %x30-39             ; 0-9
+ */
+var subtypeNameRegExp = /^[A-Za-z0-9][A-Za-z0-9!#$&^_.-]{0,126}$/
+var typeNameRegExp = /^[A-Za-z0-9][A-Za-z0-9!#$&^_-]{0,126}$/
+var typeRegExp = /^ *([A-Za-z0-9][A-Za-z0-9!#$&^_-]{0,126})\/([A-Za-z0-9][A-Za-z0-9!#$&^_.+-]{0,126}) *$/;
+
+/**
+ * Module exports.
+ */
+
+exports.format = format
+exports.parse = parse
+
+/**
+ * Format object to media type.
+ *
+ * @param {object} obj
+ * @return {string}
+ * @api public
+ */
+
+function format(obj) {
+  if (!obj || typeof obj !== 'object') {
+    throw new TypeError('argument obj is required')
+  }
+
+  var parameters = obj.parameters
+  var subtype = obj.subtype
+  var suffix = obj.suffix
+  var type = obj.type
+
+  if (!type || !typeNameRegExp.test(type)) {
+    throw new TypeError('invalid type')
+  }
+
+  if (!subtype || !subtypeNameRegExp.test(subtype)) {
+    throw new TypeError('invalid subtype')
+  }
+
+  // format as type/subtype
+  var string = type + '/' + subtype
+
+  // append +suffix
+  if (suffix) {
+    if (!typeNameRegExp.test(suffix)) {
+      throw new TypeError('invalid suffix')
+    }
+
+    string += '+' + suffix
+  }
+
+  // append parameters
+  if (parameters && typeof parameters === 'object') {
+    var param
+    var params = Object.keys(parameters).sort()
+
+    for (var i = 0; i < params.length; i++) {
+      param = params[i]
+
+      if (!tokenRegExp.test(param)) {
+        throw new TypeError('invalid parameter name')
+      }
+
+      string += '; ' + param + '=' + qstring(parameters[param])
+    }
+  }
+
+  return string
+}
+
+/**
+ * Parse media type to object.
+ *
+ * @param {string|object} string
+ * @return {Object}
+ * @api public
+ */
+
+function parse(string) {
+  if (!string) {
+    throw new TypeError('argument string is required')
+  }
+
+  // support req/res-like objects as argument
+  if (typeof string === 'object') {
+    string = getcontenttype(string)
+  }
+
+  if (typeof string !== 'string') {
+    throw new TypeError('argument string is required to be a string')
+  }
+
+  var index = string.indexOf(';')
+  var type = index !== -1
+    ? string.substr(0, index)
+    : string
+
+  var key
+  var match
+  var obj = splitType(type)
+  var params = {}
+  var value
+
+  paramRegExp.lastIndex = index
+
+  while (match = paramRegExp.exec(string)) {
+    if (match.index !== index) {
+      throw new TypeError('invalid parameter format')
+    }
+
+    index += match[0].length
+    key = match[1].toLowerCase()
+    value = match[2]
+
+    if (value[0] === '"') {
+      // remove quotes and escapes
+      value = value
+        .substr(1, value.length - 2)
+        .replace(qescRegExp, '$1')
+    }
+
+    params[key] = value
+  }
+
+  if (index !== -1 && index !== string.length) {
+    throw new TypeError('invalid parameter format')
+  }
+
+  obj.parameters = params
+
+  return obj
+}
+
+/**
+ * Get content-type from req/res objects.
+ *
+ * @param {object}
+ * @return {Object}
+ * @api private
+ */
+
+function getcontenttype(obj) {
+  if (typeof obj.getHeader === 'function') {
+    // res-like
+    return obj.getHeader('content-type')
+  }
+
+  if (typeof obj.headers === 'object') {
+    // req-like
+    return obj.headers && obj.headers['content-type']
+  }
+}
+
+/**
+ * Quote a string if necessary.
+ *
+ * @param {string} val
+ * @return {string}
+ * @api private
+ */
+
+function qstring(val) {
+  var str = String(val)
+
+  // no need to quote tokens
+  if (tokenRegExp.test(str)) {
+    return str
+  }
+
+  if (str.length > 0 && !textRegExp.test(str)) {
+    throw new TypeError('invalid parameter value')
+  }
+
+  return '"' + str.replace(quoteRegExp, '\\$1') + '"'
+}
+
+/**
+ * Simply "type/subtype+siffx" into parts.
+ *
+ * @param {string} string
+ * @return {Object}
+ * @api private
+ */
+
+function splitType(string) {
+  var match = typeRegExp.exec(string.toLowerCase())
+
+  if (!match) {
+    throw new TypeError('invalid media type')
+  }
+
+  var type = match[1]
+  var subtype = match[2]
+  var suffix
+
+  // suffix after last +
+  var index = subtype.lastIndexOf('+')
+  if (index !== -1) {
+    suffix = subtype.substr(index + 1)
+    subtype = subtype.substr(0, index)
+  }
+
+  var obj = {
+    type: type,
+    subtype: subtype,
+    suffix: suffix
+  }
+
+  return obj
+}

backend/node_modules/multer/node_modules/media-typer/package.json

@@ -0,0 +1,26 @@
+{
+  "name": "media-typer",
+  "description": "Simple RFC 6838 media type parser and formatter",
+  "version": "0.3.0",
+  "author": "Douglas Christopher Wilson <doug@somethingdoug.com>",
+  "license": "MIT",
+  "repository": "jshttp/media-typer",
+  "devDependencies": {
+    "istanbul": "0.3.2",
+    "mocha": "~1.21.4",
+    "should": "~4.0.4"
+  },
+  "files": [
+    "LICENSE",
+    "HISTORY.md",
+    "index.js"
+  ],
+  "engines": {
+    "node": ">= 0.6"
+  },
+  "scripts": {
+    "test": "mocha --reporter spec --check-leaks --bail test/",
+    "test-cov": "istanbul cover node_modules/mocha/bin/_mocha -- --reporter dot --check-leaks test/",
+    "test-travis": "istanbul cover node_modules/mocha/bin/_mocha --report lcovonly -- --reporter spec --check-leaks test/"
+  }
+}

backend/node_modules/multer/node_modules/mime-db/HISTORY.md

@@ -0,0 +1,507 @@
+1.52.0 / 2022-02-21
+===================
+
+  * Add extensions from IANA for more `image/*` types
+  * Add extension `.asc` to `application/pgp-keys`
+  * Add extensions to various XML types
+  * Add new upstream MIME types
+
+1.51.0 / 2021-11-08
+===================
+
+  * Add new upstream MIME types
+  * Mark `image/vnd.microsoft.icon` as compressible
+  * Mark `image/vnd.ms-dds` as compressible
+
+1.50.0 / 2021-09-15
+===================
+
+  * Add deprecated iWorks mime types and extensions
+  * Add new upstream MIME types
+
+1.49.0 / 2021-07-26
+===================
+
+  * Add extension `.trig` to `application/trig`
+  * Add new upstream MIME types
+
+1.48.0 / 2021-05-30
+===================
+
+  * Add extension `.mvt` to `application/vnd.mapbox-vector-tile`
+  * Add new upstream MIME types
+  * Mark `text/yaml` as compressible
+
+1.47.0 / 2021-04-01
+===================
+
+  * Add new upstream MIME types
+  * Remove ambigious extensions from IANA for `application/*+xml` types
+  * Update primary extension to `.es` for `application/ecmascript`
+
+1.46.0 / 2021-02-13
+===================
+
+  * Add extension `.amr` to `audio/amr`
+  * Add extension `.m4s` to `video/iso.segment`
+  * Add extension `.opus` to `audio/ogg`
+  * Add new upstream MIME types
+
+1.45.0 / 2020-09-22
+===================
+
+  * Add `application/ubjson` with extension `.ubj`
+  * Add `image/avif` with extension `.avif`
+  * Add `image/ktx2` with extension `.ktx2`
+  * Add extension `.dbf` to `application/vnd.dbf`
+  * Add extension `.rar` to `application/vnd.rar`
+  * Add extension `.td` to `application/urc-targetdesc+xml`
+  * Add new upstream MIME types
+  * Fix extension of `application/vnd.apple.keynote` to be `.key`
+
+1.44.0 / 2020-04-22
+===================
+
+  * Add charsets from IANA
+  * Add extension `.cjs` to `application/node`
+  * Add new upstream MIME types
+
+1.43.0 / 2020-01-05
+===================
+
+  * Add `application/x-keepass2` with extension `.kdbx`
+  * Add extension `.mxmf` to `audio/mobile-xmf`
+  * Add extensions from IANA for `application/*+xml` types
+  * Add new upstream MIME types
+
+1.42.0 / 2019-09-25
+===================
+
+  * Add `image/vnd.ms-dds` with extension `.dds`
+  * Add new upstream MIME types
+  * Remove compressible from `multipart/mixed`
+
+1.41.0 / 2019-08-30
+===================
+
+  * Add new upstream MIME types
+  * Add `application/toml` with extension `.toml`
+  * Mark `font/ttf` as compressible
+
+1.40.0 / 2019-04-20
+===================
+
+  * Add extensions from IANA for `model/*` types
+  * Add `text/mdx` with extension `.mdx`
+
+1.39.0 / 2019-04-04
+===================
+
+  * Add extensions `.siv` and `.sieve` to `application/sieve`
+  * Add new upstream MIME types
+
+1.38.0 / 2019-02-04
+===================
+
+  * Add extension `.nq` to `application/n-quads`
+  * Add extension `.nt` to `application/n-triples`
+  * Add new upstream MIME types
+  * Mark `text/less` as compressible
+
+1.37.0 / 2018-10-19
+===================
+
+  * Add extensions to HEIC image types
+  * Add new upstream MIME types
+
+1.36.0 / 2018-08-20
+===================
+
+  * Add Apple file extensions from IANA
+  * Add extensions from IANA for `image/*` types
+  * Add new upstream MIME types
+
+1.35.0 / 2018-07-15
+===================
+
+  * Add extension `.owl` to `application/rdf+xml`
+  * Add new upstream MIME types
+    - Removes extension `.woff` from `application/font-woff`
+
+1.34.0 / 2018-06-03
+===================
+
+  * Add extension `.csl` to `application/vnd.citationstyles.style+xml`
+  * Add extension `.es` to `application/ecmascript`
+  * Add new upstream MIME types
+  * Add `UTF-8` as default charset for `text/turtle`
+  * Mark all XML-derived types as compressible
+
+1.33.0 / 2018-02-15
+===================
+
+  * Add extensions from IANA for `message/*` types
+  * Add new upstream MIME types
+  * Fix some incorrect OOXML types
+  * Remove `application/font-woff2`
+
+1.32.0 / 2017-11-29
+===================
+
+  * Add new upstream MIME types
+  * Update `text/hjson` to registered `application/hjson`
+  * Add `text/shex` with extension `.shex`
+
+1.31.0 / 2017-10-25
+===================
+
+  * Add `application/raml+yaml` with extension `.raml`
+  * Add `application/wasm` with extension `.wasm`
+  * Add new `font` type from IANA
+  * Add new upstream font extensions
+  * Add new upstream MIME types
+  * Add extensions for JPEG-2000 images
+
+1.30.0 / 2017-08-27
+===================
+
+  * Add `application/vnd.ms-outlook`
+  * Add `application/x-arj`
+  * Add extension `.mjs` to `application/javascript`
+  * Add glTF types and extensions
+  * Add new upstream MIME types
+  * Add `text/x-org`
+  * Add VirtualBox MIME types
+  * Fix `source` records for `video/*` types that are IANA
+  * Update `font/opentype` to registered `font/otf`
+
+1.29.0 / 2017-07-10
+===================
+
+  * Add `application/fido.trusted-apps+json`
+  * Add extension `.wadl` to `application/vnd.sun.wadl+xml`
+  * Add new upstream MIME types
+  * Add `UTF-8` as default charset for `text/css`
+
+1.28.0 / 2017-05-14
+===================
+
+  * Add new upstream MIME types
+  * Add extension `.gz` to `application/gzip`
+  * Update extensions `.md` and `.markdown` to be `text/markdown`
+
+1.27.0 / 2017-03-16
+===================
+
+  * Add new upstream MIME types
+  * Add `image/apng` with extension `.apng`
+
+1.26.0 / 2017-01-14
+===================
+
+  * Add new upstream MIME types
+  * Add extension `.geojson` to `application/geo+json`
+
+1.25.0 / 2016-11-11
+===================
+
+  * Add new upstream MIME types
+
+1.24.0 / 2016-09-18
+===================
+
+  * Add `audio/mp3`
+  * Add new upstream MIME types
+
+1.23.0 / 2016-05-01
+===================
+
+  * Add new upstream MIME types
+  * Add extension `.3gpp` to `audio/3gpp`
+
+1.22.0 / 2016-02-15
+===================
+
+  * Add `text/slim`
+  * Add extension `.rng` to `application/xml`
+  * Add new upstream MIME types
+  * Fix extension of `application/dash+xml` to be `.mpd`
+  * Update primary extension to `.m4a` for `audio/mp4`
+
+1.21.0 / 2016-01-06
+===================
+
+  * Add Google document types
+  * Add new upstream MIME types
+
+1.20.0 / 2015-11-10
+===================
+
+  * Add `text/x-suse-ymp`
+  * Add new upstream MIME types
+
+1.19.0 / 2015-09-17
+===================
+
+  * Add `application/vnd.apple.pkpass`
+  * Add new upstream MIME types
+
+1.18.0 / 2015-09-03
+===================
+
+  * Add new upstream MIME types
+
+1.17.0 / 2015-08-13
+===================
+
+  * Add `application/x-msdos-program`
+  * Add `audio/g711-0`
+  * Add `image/vnd.mozilla.apng`
+  * Add extension `.exe` to `application/x-msdos-program`
+
+1.16.0 / 2015-07-29
+===================
+
+  * Add `application/vnd.uri-map`
+
+1.15.0 / 2015-07-13
+===================
+
+  * Add `application/x-httpd-php`
+
+1.14.0 / 2015-06-25
+===================
+
+  * Add `application/scim+json`
+  * Add `application/vnd.3gpp.ussd+xml`
+  * Add `application/vnd.biopax.rdf+xml`
+  * Add `text/x-processing`
+
+1.13.0 / 2015-06-07
+===================
+
+  * Add nginx as a source
+  * Add `application/x-cocoa`
+  * Add `application/x-java-archive-diff`
+  * Add `application/x-makeself`
+  * Add `application/x-perl`
+  * Add `application/x-pilot`
+  * Add `application/x-redhat-package-manager`
+  * Add `application/x-sea`
+  * Add `audio/x-m4a`
+  * Add `audio/x-realaudio`
+  * Add `image/x-jng`
+  * Add `text/mathml`
+
+1.12.0 / 2015-06-05
+===================
+
+  * Add `application/bdoc`
+  * Add `application/vnd.hyperdrive+json`
+  * Add `application/x-bdoc`
+  * Add extension `.rtf` to `text/rtf`
+
+1.11.0 / 2015-05-31
+===================
+
+  * Add `audio/wav`
+  * Add `audio/wave`
+  * Add extension `.litcoffee` to `text/coffeescript`
+  * Add extension `.sfd-hdstx` to `application/vnd.hydrostatix.sof-data`
+  * Add extension `.n-gage` to `application/vnd.nokia.n-gage.symbian.install`
+
+1.10.0 / 2015-05-19
+===================
+
+  * Add `application/vnd.balsamiq.bmpr`
+  * Add `application/vnd.microsoft.portable-executable`
+  * Add `application/x-ns-proxy-autoconfig`
+
+1.9.1 / 2015-04-19
+==================
+
+  * Remove `.json` extension from `application/manifest+json`
+    - This is causing bugs downstream
+
+1.9.0 / 2015-04-19
+==================
+
+  * Add `application/manifest+json`
+  * Add `application/vnd.micro+json`
+  * Add `image/vnd.zbrush.pcx`
+  * Add `image/x-ms-bmp`
+
+1.8.0 / 2015-03-13
+==================
+
+  * Add `application/vnd.citationstyles.style+xml`
+  * Add `application/vnd.fastcopy-disk-image`
+  * Add `application/vnd.gov.sk.xmldatacontainer+xml`
+  * Add extension `.jsonld` to `application/ld+json`
+
+1.7.0 / 2015-02-08
+==================
+
+  * Add `application/vnd.gerber`
+  * Add `application/vnd.msa-disk-image`
+
+1.6.1 / 2015-02-05
+==================
+
+  * Community extensions ownership transferred from `node-mime`
+
+1.6.0 / 2015-01-29
+==================
+
+  * Add `application/jose`
+  * Add `application/jose+json`
+  * Add `application/json-seq`
+  * Add `application/jwk+json`
+  * Add `application/jwk-set+json`
+  * Add `application/jwt`
+  * Add `application/rdap+json`
+  * Add `application/vnd.gov.sk.e-form+xml`
+  * Add `application/vnd.ims.imsccv1p3`
+
+1.5.0 / 2014-12-30
+==================
+
+  * Add `application/vnd.oracle.resource+json`
+  * Fix various invalid MIME type entries
+    - `application/mbox+xml`
+    - `application/oscp-response`
+    - `application/vwg-multiplexed`
+    - `audio/g721`
+
+1.4.0 / 2014-12-21
+==================
+
+  * Add `application/vnd.ims.imsccv1p2`
+  * Fix various invalid MIME type entries
+    - `application/vnd-acucobol`
+    - `application/vnd-curl`
+    - `application/vnd-dart`
+    - `application/vnd-dxr`
+    - `application/vnd-fdf`
+    - `application/vnd-mif`
+    - `application/vnd-sema`
+    - `application/vnd-wap-wmlc`
+    - `application/vnd.adobe.flash-movie`
+    - `application/vnd.dece-zip`
+    - `application/vnd.dvb_service`
+    - `application/vnd.micrografx-igx`
+    - `application/vnd.sealed-doc`
+    - `application/vnd.sealed-eml`
+    - `application/vnd.sealed-mht`
+    - `application/vnd.sealed-ppt`
+    - `application/vnd.sealed-tiff`
+    - `application/vnd.sealed-xls`
+    - `application/vnd.sealedmedia.softseal-html`
+    - `application/vnd.sealedmedia.softseal-pdf`
+    - `application/vnd.wap-slc`
+    - `application/vnd.wap-wbxml`
+    - `audio/vnd.sealedmedia.softseal-mpeg`
+    - `image/vnd-djvu`
+    - `image/vnd-svf`
+    - `image/vnd-wap-wbmp`
+    - `image/vnd.sealed-png`
+    - `image/vnd.sealedmedia.softseal-gif`
+    - `image/vnd.sealedmedia.softseal-jpg`
+    - `model/vnd-dwf`
+    - `model/vnd.parasolid.transmit-binary`
+    - `model/vnd.parasolid.transmit-text`
+    - `text/vnd-a`
+    - `text/vnd-curl`
+    - `text/vnd.wap-wml`
+  * Remove example template MIME types
+    - `application/example`
+    - `audio/example`
+    - `image/example`
+    - `message/example`
+    - `model/example`
+    - `multipart/example`
+    - `text/example`
+    - `video/example`
+
+1.3.1 / 2014-12-16
+==================
+
+  * Fix missing extensions
+    - `application/json5`
+    - `text/hjson`
+
+1.3.0 / 2014-12-07
+==================
+
+  * Add `application/a2l`
+  * Add `application/aml`
+  * Add `application/atfx`
+  * Add `application/atxml`
+  * Add `application/cdfx+xml`
+  * Add `application/dii`
+  * Add `application/json5`
+  * Add `application/lxf`
+  * Add `application/mf4`
+  * Add `application/vnd.apache.thrift.compact`
+  * Add `application/vnd.apache.thrift.json`
+  * Add `application/vnd.coffeescript`
+  * Add `application/vnd.enphase.envoy`
+  * Add `application/vnd.ims.imsccv1p1`
+  * Add `text/csv-schema`
+  * Add `text/hjson`
+  * Add `text/markdown`
+  * Add `text/yaml`
+
+1.2.0 / 2014-11-09
+==================
+
+  * Add `application/cea`
+  * Add `application/dit`
+  * Add `application/vnd.gov.sk.e-form+zip`
+  * Add `application/vnd.tmd.mediaflex.api+xml`
+  * Type `application/epub+zip` is now IANA-registered
+
+1.1.2 / 2014-10-23
+==================
+
+  * Rebuild database for `application/x-www-form-urlencoded` change
+
+1.1.1 / 2014-10-20
+==================
+
+  * Mark `application/x-www-form-urlencoded` as compressible.
+
+1.1.0 / 2014-09-28
+==================
+
+  * Add `application/font-woff2`
+
+1.0.3 / 2014-09-25
+==================
+
+  * Fix engine requirement in package
+
+1.0.2 / 2014-09-25
+==================
+
+  * Add `application/coap-group+json`
+  * Add `application/dcd`
+  * Add `application/vnd.apache.thrift.binary`
+  * Add `image/vnd.tencent.tap`
+  * Mark all JSON-derived types as compressible
+  * Update `text/vtt` data
+
+1.0.1 / 2014-08-30
+==================
+
+  * Fix extension ordering
+
+1.0.0 / 2014-08-30
+==================
+
+  * Add `application/atf`
+  * Add `application/merge-patch+json`
+  * Add `multipart/x-mixed-replace`
+  * Add `source: 'apache'` metadata
+  * Add `source: 'iana'` metadata
+  * Remove badly-assumed charset data

backend/node_modules/multer/node_modules/mime-db/LICENSE

@@ -0,0 +1,23 @@
+(The MIT License)
+
+Copyright (c) 2014 Jonathan Ong <me@jongleberry.com>
+Copyright (c) 2015-2022 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.

backend/node_modules/multer/node_modules/mime-db/README.md

@@ -0,0 +1,100 @@
+# mime-db
+
+[![NPM Version][npm-version-image]][npm-url]
+[![NPM Downloads][npm-downloads-image]][npm-url]
+[![Node.js Version][node-image]][node-url]
+[![Build Status][ci-image]][ci-url]
+[![Coverage Status][coveralls-image]][coveralls-url]
+
+This is a large database of mime types and information about them.
+It consists of a single, public JSON file and does not include any logic,
+allowing it to remain as un-opinionated as possible with an API.
+It aggregates data from the following sources:
+
+- http://www.iana.org/assignments/media-types/media-types.xhtml
+- http://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types
+- http://hg.nginx.org/nginx/raw-file/default/conf/mime.types
+
+## Installation
+
+```bash
+npm install mime-db
+```
+
+### Database Download
+
+If you're crazy enough to use this in the browser, you can just grab the
+JSON file using [jsDelivr](https://www.jsdelivr.com/). It is recommended to
+replace `master` with [a release tag](https://github.com/jshttp/mime-db/tags)
+as the JSON format may change in the future.
+
+```
+https://cdn.jsdelivr.net/gh/jshttp/mime-db@master/db.json
+```
+
+## Usage
+
+```js
+var db = require('mime-db')
+
+// grab data on .js files
+var data = db['application/javascript']
+```
+
+## Data Structure
+
+The JSON file is a map lookup for lowercased mime types.
+Each mime type has the following properties:
+
+- `.source` - where the mime type is defined.
+    If not set, it's probably a custom media type.
+    - `apache` - [Apache common media types](http://svn.apache.org/repos/asf/httpd/httpd/trunk/docs/conf/mime.types)
+    - `iana` - [IANA-defined media types](http://www.iana.org/assignments/media-types/media-types.xhtml)
+    - `nginx` - [nginx media types](http://hg.nginx.org/nginx/raw-file/default/conf/mime.types)
+- `.extensions[]` - known extensions associated with this mime type.
+- `.compressible` - whether a file of this type can be gzipped.
+- `.charset` - the default charset associated with this type, if any.
+
+If unknown, every property could be `undefined`.
+
+## Contributing
+
+To edit the database, only make PRs against `src/custom-types.json` or
+`src/custom-suffix.json`.
+
+The `src/custom-types.json` file is a JSON object with the MIME type as the
+keys and the values being an object with the following keys:
+
+- `compressible` - leave out if you don't know, otherwise `true`/`false` to
+  indicate whether the data represented by the type is typically compressible.
+- `extensions` - include an array of file extensions that are associated with
+  the type.
+- `notes` - human-readable notes about the type, typically what the type is.
+- `sources` - include an array of URLs of where the MIME type and the associated
+  extensions are sourced from. This needs to be a [primary source](https://en.wikipedia.org/wiki/Primary_source);
+  links to type aggregating sites and Wikipedia are _not acceptable_.
+
+To update the build, run `npm run build`.
+
+### Adding Custom Media Types
+
+The best way to get new media types included in this library is to register
+them with the IANA. The community registration procedure is outlined in
+[RFC 6838 section 5](http://tools.ietf.org/html/rfc6838#section-5). Types
+registered with the IANA are automatically pulled into this library.
+
+If that is not possible / feasible, they can be added directly here as a
+"custom" type. To do this, it is required to have a primary source that
+definitively lists the media type. If an extension is going to be listed as
+associateed with this media type, the source must definitively link the
+media type and extension as well.
+
+[ci-image]: https://badgen.net/github/checks/jshttp/mime-db/master?label=ci
+[ci-url]: https://github.com/jshttp/mime-db/actions?query=workflow%3Aci
+[coveralls-image]: https://badgen.net/coveralls/c/github/jshttp/mime-db/master
+[coveralls-url]: https://coveralls.io/r/jshttp/mime-db?branch=master
+[node-image]: https://badgen.net/npm/node/mime-db
+[node-url]: https://nodejs.org/en/download
+[npm-downloads-image]: https://badgen.net/npm/dm/mime-db
+[npm-url]: https://npmjs.org/package/mime-db
+[npm-version-image]: https://badgen.net/npm/v/mime-db

backend/node_modules/multer/node_modules/mime-db/index.js

@@ -0,0 +1,12 @@
+/*!
+ * mime-db
+ * Copyright(c) 2014 Jonathan Ong
+ * Copyright(c) 2015-2022 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+/**
+ * Module exports.
+ */
+
+module.exports = require('./db.json')

backend/node_modules/multer/node_modules/mime-db/package.json

@@ -0,0 +1,60 @@
+{
+  "name": "mime-db",
+  "description": "Media Type Database",
+  "version": "1.52.0",
+  "contributors": [
+    "Douglas Christopher Wilson <doug@somethingdoug.com>",
+    "Jonathan Ong <me@jongleberry.com> (http://jongleberry.com)",
+    "Robert Kieffer <robert@broofa.com> (http://github.com/broofa)"
+  ],
+  "license": "MIT",
+  "keywords": [
+    "mime",
+    "db",
+    "type",
+    "types",
+    "database",
+    "charset",
+    "charsets"
+  ],
+  "repository": "jshttp/mime-db",
+  "devDependencies": {
+    "bluebird": "3.7.2",
+    "co": "4.6.0",
+    "cogent": "1.0.1",
+    "csv-parse": "4.16.3",
+    "eslint": "7.32.0",
+    "eslint-config-standard": "15.0.1",
+    "eslint-plugin-import": "2.25.4",
+    "eslint-plugin-markdown": "2.2.1",
+    "eslint-plugin-node": "11.1.0",
+    "eslint-plugin-promise": "5.1.1",
+    "eslint-plugin-standard": "4.1.0",
+    "gnode": "0.1.2",
+    "media-typer": "1.1.0",
+    "mocha": "9.2.1",
+    "nyc": "15.1.0",
+    "raw-body": "2.5.0",
+    "stream-to-array": "2.3.0"
+  },
+  "files": [
+    "HISTORY.md",
+    "LICENSE",
+    "README.md",
+    "db.json",
+    "index.js"
+  ],
+  "engines": {
+    "node": ">= 0.6"
+  },
+  "scripts": {
+    "build": "node scripts/build",
+    "fetch": "node scripts/fetch-apache && gnode scripts/fetch-iana && node scripts/fetch-nginx",
+    "lint": "eslint .",
+    "test": "mocha --reporter spec --bail --check-leaks test/",
+    "test-ci": "nyc --reporter=lcov --reporter=text npm test",
+    "test-cov": "nyc --reporter=html --reporter=text npm test",
+    "update": "npm run fetch && npm run build",
+    "version": "node scripts/version-history.js && git add HISTORY.md"
+  }
+}

backend/node_modules/multer/node_modules/mime-types/HISTORY.md

@@ -0,0 +1,397 @@
+2.1.35 / 2022-03-12
+===================
+
+  * deps: mime-db@1.52.0
+    - Add extensions from IANA for more `image/*` types
+    - Add extension `.asc` to `application/pgp-keys`
+    - Add extensions to various XML types
+    - Add new upstream MIME types
+
+2.1.34 / 2021-11-08
+===================
+
+  * deps: mime-db@1.51.0
+    - Add new upstream MIME types
+
+2.1.33 / 2021-10-01
+===================
+
+  * deps: mime-db@1.50.0
+    - Add deprecated iWorks mime types and extensions
+    - Add new upstream MIME types
+
+2.1.32 / 2021-07-27
+===================
+
+  * deps: mime-db@1.49.0
+    - Add extension `.trig` to `application/trig`
+    - Add new upstream MIME types
+
+2.1.31 / 2021-06-01
+===================
+
+  * deps: mime-db@1.48.0
+    - Add extension `.mvt` to `application/vnd.mapbox-vector-tile`
+    - Add new upstream MIME types
+
+2.1.30 / 2021-04-02
+===================
+
+  * deps: mime-db@1.47.0
+    - Add extension `.amr` to `audio/amr`
+    - Remove ambigious extensions from IANA for `application/*+xml` types
+    - Update primary extension to `.es` for `application/ecmascript`
+
+2.1.29 / 2021-02-17
+===================
+
+  * deps: mime-db@1.46.0
+    - Add extension `.amr` to `audio/amr`
+    - Add extension `.m4s` to `video/iso.segment`
+    - Add extension `.opus` to `audio/ogg`
+    - Add new upstream MIME types
+
+2.1.28 / 2021-01-01
+===================
+
+  * deps: mime-db@1.45.0
+    - Add `application/ubjson` with extension `.ubj`
+    - Add `image/avif` with extension `.avif`
+    - Add `image/ktx2` with extension `.ktx2`
+    - Add extension `.dbf` to `application/vnd.dbf`
+    - Add extension `.rar` to `application/vnd.rar`
+    - Add extension `.td` to `application/urc-targetdesc+xml`
+    - Add new upstream MIME types
+    - Fix extension of `application/vnd.apple.keynote` to be `.key`
+
+2.1.27 / 2020-04-23
+===================
+
+  * deps: mime-db@1.44.0
+    - Add charsets from IANA
+    - Add extension `.cjs` to `application/node`
+    - Add new upstream MIME types
+
+2.1.26 / 2020-01-05
+===================
+
+  * deps: mime-db@1.43.0
+    - Add `application/x-keepass2` with extension `.kdbx`
+    - Add extension `.mxmf` to `audio/mobile-xmf`
+    - Add extensions from IANA for `application/*+xml` types
+    - Add new upstream MIME types
+
+2.1.25 / 2019-11-12
+===================
+
+  * deps: mime-db@1.42.0
+    - Add new upstream MIME types
+    - Add `application/toml` with extension `.toml`
+    - Add `image/vnd.ms-dds` with extension `.dds`
+
+2.1.24 / 2019-04-20
+===================
+
+  * deps: mime-db@1.40.0
+    - Add extensions from IANA for `model/*` types
+    - Add `text/mdx` with extension `.mdx`
+
+2.1.23 / 2019-04-17
+===================
+
+  * deps: mime-db@~1.39.0
+    - Add extensions `.siv` and `.sieve` to `application/sieve`
+    - Add new upstream MIME types
+
+2.1.22 / 2019-02-14
+===================
+
+  * deps: mime-db@~1.38.0
+    - Add extension `.nq` to `application/n-quads`
+    - Add extension `.nt` to `application/n-triples`
+    - Add new upstream MIME types
+
+2.1.21 / 2018-10-19
+===================
+
+  * deps: mime-db@~1.37.0
+    - Add extensions to HEIC image types
+    - Add new upstream MIME types
+
+2.1.20 / 2018-08-26
+===================
+
+  * deps: mime-db@~1.36.0
+    - Add Apple file extensions from IANA
+    - Add extensions from IANA for `image/*` types
+    - Add new upstream MIME types
+
+2.1.19 / 2018-07-17
+===================
+
+  * deps: mime-db@~1.35.0
+    - Add extension `.csl` to `application/vnd.citationstyles.style+xml`
+    - Add extension `.es` to `application/ecmascript`
+    - Add extension `.owl` to `application/rdf+xml`
+    - Add new upstream MIME types
+    - Add UTF-8 as default charset for `text/turtle`
+
+2.1.18 / 2018-02-16
+===================
+
+  * deps: mime-db@~1.33.0
+    - Add `application/raml+yaml` with extension `.raml`
+    - Add `application/wasm` with extension `.wasm`
+    - Add `text/shex` with extension `.shex`
+    - Add extensions for JPEG-2000 images
+    - Add extensions from IANA for `message/*` types
+    - Add new upstream MIME types
+    - Update font MIME types
+    - Update `text/hjson` to registered `application/hjson`
+
+2.1.17 / 2017-09-01
+===================
+
+  * deps: mime-db@~1.30.0
+    - Add `application/vnd.ms-outlook`
+    - Add `application/x-arj`
+    - Add extension `.mjs` to `application/javascript`
+    - Add glTF types and extensions
+    - Add new upstream MIME types
+    - Add `text/x-org`
+    - Add VirtualBox MIME types
+    - Fix `source` records for `video/*` types that are IANA
+    - Update `font/opentype` to registered `font/otf`
+
+2.1.16 / 2017-07-24
+===================
+
+  * deps: mime-db@~1.29.0
+    - Add `application/fido.trusted-apps+json`
+    - Add extension `.wadl` to `application/vnd.sun.wadl+xml`
+    - Add extension `.gz` to `application/gzip`
+    - Add new upstream MIME types
+    - Update extensions `.md` and `.markdown` to be `text/markdown`
+
+2.1.15 / 2017-03-23
+===================
+
+  * deps: mime-db@~1.27.0
+    - Add new mime types
+    - Add `image/apng`
+
+2.1.14 / 2017-01-14
+===================
+
+  * deps: mime-db@~1.26.0
+    - Add new mime types
+
+2.1.13 / 2016-11-18
+===================
+
+  * deps: mime-db@~1.25.0
+    - Add new mime types
+
+2.1.12 / 2016-09-18
+===================
+
+  * deps: mime-db@~1.24.0
+    - Add new mime types
+    - Add `audio/mp3`
+
+2.1.11 / 2016-05-01
+===================
+
+  * deps: mime-db@~1.23.0
+    - Add new mime types
+
+2.1.10 / 2016-02-15
+===================
+
+  * deps: mime-db@~1.22.0
+    - Add new mime types
+    - Fix extension of `application/dash+xml`
+    - Update primary extension for `audio/mp4`
+
+2.1.9 / 2016-01-06
+==================
+
+  * deps: mime-db@~1.21.0
+    - Add new mime types
+
+2.1.8 / 2015-11-30
+==================
+
+  * deps: mime-db@~1.20.0
+    - Add new mime types
+
+2.1.7 / 2015-09-20
+==================
+
+  * deps: mime-db@~1.19.0
+    - Add new mime types
+
+2.1.6 / 2015-09-03
+==================
+
+  * deps: mime-db@~1.18.0
+    - Add new mime types
+
+2.1.5 / 2015-08-20
+==================
+
+  * deps: mime-db@~1.17.0
+    - Add new mime types
+
+2.1.4 / 2015-07-30
+==================
+
+  * deps: mime-db@~1.16.0
+    - Add new mime types
+
+2.1.3 / 2015-07-13
+==================
+
+  * deps: mime-db@~1.15.0
+    - Add new mime types
+
+2.1.2 / 2015-06-25
+==================
+
+  * deps: mime-db@~1.14.0
+    - Add new mime types
+
+2.1.1 / 2015-06-08
+==================
+
+  * perf: fix deopt during mapping
+
+2.1.0 / 2015-06-07
+==================
+
+  * Fix incorrectly treating extension-less file name as extension
+    - i.e. `'path/to/json'` will no longer return `application/json`
+  * Fix `.charset(type)` to accept parameters
+  * Fix `.charset(type)` to match case-insensitive
+  * Improve generation of extension to MIME mapping
+  * Refactor internals for readability and no argument reassignment
+  * Prefer `application/*` MIME types from the same source
+  * Prefer any type over `application/octet-stream`
+  * deps: mime-db@~1.13.0
+    - Add nginx as a source
+    - Add new mime types
+
+2.0.14 / 2015-06-06
+===================
+
+  * deps: mime-db@~1.12.0
+    - Add new mime types
+
+2.0.13 / 2015-05-31
+===================
+
+  * deps: mime-db@~1.11.0
+    - Add new mime types
+
+2.0.12 / 2015-05-19
+===================
+
+  * deps: mime-db@~1.10.0
+    - Add new mime types
+
+2.0.11 / 2015-05-05
+===================
+
+  * deps: mime-db@~1.9.1
+    - Add new mime types
+
+2.0.10 / 2015-03-13
+===================
+
+  * deps: mime-db@~1.8.0
+    - Add new mime types
+
+2.0.9 / 2015-02-09
+==================
+
+  * deps: mime-db@~1.7.0
+    - Add new mime types
+    - Community extensions ownership transferred from `node-mime`
+
+2.0.8 / 2015-01-29
+==================
+
+  * deps: mime-db@~1.6.0
+    - Add new mime types
+
+2.0.7 / 2014-12-30
+==================
+
+  * deps: mime-db@~1.5.0
+    - Add new mime types
+    - Fix various invalid MIME type entries
+
+2.0.6 / 2014-12-30
+==================
+
+  * deps: mime-db@~1.4.0
+    - Add new mime types
+    - Fix various invalid MIME type entries
+    - Remove example template MIME types
+
+2.0.5 / 2014-12-29
+==================
+
+  * deps: mime-db@~1.3.1
+    - Fix missing extensions
+
+2.0.4 / 2014-12-10
+==================
+
+  * deps: mime-db@~1.3.0
+    - Add new mime types
+
+2.0.3 / 2014-11-09
+==================
+
+  * deps: mime-db@~1.2.0
+    - Add new mime types
+
+2.0.2 / 2014-09-28
+==================
+
+  * deps: mime-db@~1.1.0
+    - Add new mime types
+    - Update charsets
+
+2.0.1 / 2014-09-07
+==================
+
+  * Support Node.js 0.6
+
+2.0.0 / 2014-09-02
+==================
+
+  * Use `mime-db`
+  * Remove `.define()`
+
+1.0.2 / 2014-08-04
+==================
+
+  * Set charset=utf-8 for `text/javascript`
+
+1.0.1 / 2014-06-24
+==================
+
+  * Add `text/jsx` type
+
+1.0.0 / 2014-05-12
+==================
+
+  * Return `false` for unknown types
+  * Set charset=utf-8 for `application/json`
+
+0.1.0 / 2014-05-02
+==================
+
+  * Initial release

backend/node_modules/multer/node_modules/mime-types/LICENSE

@@ -0,0 +1,23 @@
+(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.

backend/node_modules/multer/node_modules/mime-types/README.md

@@ -0,0 +1,113 @@
+# mime-types
+
+[![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][ci-image]][ci-url]
+[![Test Coverage][coveralls-image]][coveralls-url]
+
+The ultimate javascript content-type utility.
+
+Similar to [the `mime@1.x` module](https://www.npmjs.com/package/mime), except:
+
+- __No fallbacks.__ Instead of naively returning the first available type,
+  `mime-types` simply returns `false`, so do
+  `var type = mime.lookup('unrecognized') || 'application/octet-stream'`.
+- No `new Mime()` business, so you could do `var lookup = require('mime-types').lookup`.
+- No `.define()` functionality
+- Bug fixes for `.lookup(path)`
+
+Otherwise, the API is compatible with `mime` 1.x.
+
+## Install
+
+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 mime-types
+```
+
+## Adding Types
+
+All mime types are based on [mime-db](https://www.npmjs.com/package/mime-db),
+so open a PR there if you'd like to add mime types.
+
+## API
+
+```js
+var mime = require('mime-types')
+```
+
+All functions return `false` if input is invalid or not found.
+
+### mime.lookup(path)
+
+Lookup the content-type associated with a file.
+
+```js
+mime.lookup('json') // 'application/json'
+mime.lookup('.md') // 'text/markdown'
+mime.lookup('file.html') // 'text/html'
+mime.lookup('folder/file.js') // 'application/javascript'
+mime.lookup('folder/.htaccess') // false
+
+mime.lookup('cats') // false
+```
+
+### mime.contentType(type)
+
+Create a full content-type header given a content-type or extension.
+When given an extension, `mime.lookup` is used to get the matching
+content-type, otherwise the given content-type is used. Then if the
+content-type does not already have a `charset` parameter, `mime.charset`
+is used to get the default charset and add to the returned content-type.
+
+```js
+mime.contentType('markdown') // 'text/x-markdown; charset=utf-8'
+mime.contentType('file.json') // 'application/json; charset=utf-8'
+mime.contentType('text/html') // 'text/html; charset=utf-8'
+mime.contentType('text/html; charset=iso-8859-1') // 'text/html; charset=iso-8859-1'
+
+// from a full path
+mime.contentType(path.extname('/path/to/file.json')) // 'application/json; charset=utf-8'
+```
+
+### mime.extension(type)
+
+Get the default extension for a content-type.
+
+```js
+mime.extension('application/octet-stream') // 'bin'
+```
+
+### mime.charset(type)
+
+Lookup the implied default charset of a content-type.
+
+```js
+mime.charset('text/markdown') // 'UTF-8'
+```
+
+### var type = mime.types[extension]
+
+A map of content-types by extension.
+
+### [extensions...] = mime.extensions[type]
+
+A map of extensions by content-type.
+
+## License
+
+[MIT](LICENSE)
+
+[ci-image]: https://badgen.net/github/checks/jshttp/mime-types/master?label=ci
+[ci-url]: https://github.com/jshttp/mime-types/actions/workflows/ci.yml
+[coveralls-image]: https://badgen.net/coveralls/c/github/jshttp/mime-types/master
+[coveralls-url]: https://coveralls.io/r/jshttp/mime-types?branch=master
+[node-version-image]: https://badgen.net/npm/node/mime-types
+[node-version-url]: https://nodejs.org/en/download
+[npm-downloads-image]: https://badgen.net/npm/dm/mime-types
+[npm-url]: https://npmjs.org/package/mime-types
+[npm-version-image]: https://badgen.net/npm/v/mime-types

backend/node_modules/multer/node_modules/mime-types/index.js

@@ -0,0 +1,188 @@
+/*!
+ * mime-types
+ * Copyright(c) 2014 Jonathan Ong
+ * Copyright(c) 2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict'
+
+/**
+ * Module dependencies.
+ * @private
+ */
+
+var db = require('mime-db')
+var extname = require('path').extname
+
+/**
+ * Module variables.
+ * @private
+ */
+
+var EXTRACT_TYPE_REGEXP = /^\s*([^;\s]*)(?:;|\s|$)/
+var TEXT_TYPE_REGEXP = /^text\//i
+
+/**
+ * Module exports.
+ * @public
+ */
+
+exports.charset = charset
+exports.charsets = { lookup: charset }
+exports.contentType = contentType
+exports.extension = extension
+exports.extensions = Object.create(null)
+exports.lookup = lookup
+exports.types = Object.create(null)
+
+// Populate the extensions/types maps
+populateMaps(exports.extensions, exports.types)
+
+/**
+ * Get the default charset for a MIME type.
+ *
+ * @param {string} type
+ * @return {boolean|string}
+ */
+
+function charset (type) {
+  if (!type || typeof type !== 'string') {
+    return false
+  }
+
+  // TODO: use media-typer
+  var match = EXTRACT_TYPE_REGEXP.exec(type)
+  var mime = match && db[match[1].toLowerCase()]
+
+  if (mime && mime.charset) {
+    return mime.charset
+  }
+
+  // default text/* to utf-8
+  if (match && TEXT_TYPE_REGEXP.test(match[1])) {
+    return 'UTF-8'
+  }
+
+  return false
+}
+
+/**
+ * Create a full Content-Type header given a MIME type or extension.
+ *
+ * @param {string} str
+ * @return {boolean|string}
+ */
+
+function contentType (str) {
+  // TODO: should this even be in this module?
+  if (!str || typeof str !== 'string') {
+    return false
+  }
+
+  var mime = str.indexOf('/') === -1
+    ? exports.lookup(str)
+    : str
+
+  if (!mime) {
+    return false
+  }
+
+  // TODO: use content-type or other module
+  if (mime.indexOf('charset') === -1) {
+    var charset = exports.charset(mime)
+    if (charset) mime += '; charset=' + charset.toLowerCase()
+  }
+
+  return mime
+}
+
+/**
+ * Get the default extension for a MIME type.
+ *
+ * @param {string} type
+ * @return {boolean|string}
+ */
+
+function extension (type) {
+  if (!type || typeof type !== 'string') {
+    return false
+  }
+
+  // TODO: use media-typer
+  var match = EXTRACT_TYPE_REGEXP.exec(type)
+
+  // get extensions
+  var exts = match && exports.extensions[match[1].toLowerCase()]
+
+  if (!exts || !exts.length) {
+    return false
+  }
+
+  return exts[0]
+}
+
+/**
+ * Lookup the MIME type for a file path/extension.
+ *
+ * @param {string} path
+ * @return {boolean|string}
+ */
+
+function lookup (path) {
+  if (!path || typeof path !== 'string') {
+    return false
+  }
+
+  // get the extension ("ext" or ".ext" or full path)
+  var extension = extname('x.' + path)
+    .toLowerCase()
+    .substr(1)
+
+  if (!extension) {
+    return false
+  }
+
+  return exports.types[extension] || false
+}
+
+/**
+ * Populate the extensions and types maps.
+ * @private
+ */
+
+function populateMaps (extensions, types) {
+  // source preference (least -> most)
+  var preference = ['nginx', 'apache', undefined, 'iana']
+
+  Object.keys(db).forEach(function forEachMimeType (type) {
+    var mime = db[type]
+    var exts = mime.extensions
+
+    if (!exts || !exts.length) {
+      return
+    }
+
+    // mime -> extensions
+    extensions[type] = exts
+
+    // extension -> mime
+    for (var i = 0; i < exts.length; i++) {
+      var extension = exts[i]
+
+      if (types[extension]) {
+        var from = preference.indexOf(db[types[extension]].source)
+        var to = preference.indexOf(mime.source)
+
+        if (types[extension] !== 'application/octet-stream' &&
+          (from > to || (from === to && types[extension].substr(0, 12) === 'application/'))) {
+          // skip the remapping
+          continue
+        }
+      }
+
+      // set the extension -> mime
+      types[extension] = type
+    }
+  })
+}

backend/node_modules/multer/node_modules/mime-types/package.json

@@ -0,0 +1,44 @@
+{
+  "name": "mime-types",
+  "description": "The ultimate javascript content-type utility.",
+  "version": "2.1.35",
+  "contributors": [
+    "Douglas Christopher Wilson <doug@somethingdoug.com>",
+    "Jeremiah Senkpiel <fishrock123@rocketmail.com> (https://searchbeam.jit.su)",
+    "Jonathan Ong <me@jongleberry.com> (http://jongleberry.com)"
+  ],
+  "license": "MIT",
+  "keywords": [
+    "mime",
+    "types"
+  ],
+  "repository": "jshttp/mime-types",
+  "dependencies": {
+    "mime-db": "1.52.0"
+  },
+  "devDependencies": {
+    "eslint": "7.32.0",
+    "eslint-config-standard": "14.1.1",
+    "eslint-plugin-import": "2.25.4",
+    "eslint-plugin-markdown": "2.2.1",
+    "eslint-plugin-node": "11.1.0",
+    "eslint-plugin-promise": "5.2.0",
+    "eslint-plugin-standard": "4.1.0",
+    "mocha": "9.2.2",
+    "nyc": "15.1.0"
+  },
+  "files": [
+    "HISTORY.md",
+    "LICENSE",
+    "index.js"
+  ],
+  "engines": {
+    "node": ">= 0.6"
+  },
+  "scripts": {
+    "lint": "eslint .",
+    "test": "mocha --reporter spec test/test.js",
+    "test-ci": "nyc --reporter=lcov --reporter=text npm test",
+    "test-cov": "nyc --reporter=html --reporter=text npm test"
+  }
+}

backend/node_modules/multer/node_modules/type-is/HISTORY.md

@@ -0,0 +1,259 @@
+1.6.18 / 2019-04-26
+===================
+
+  * Fix regression passing request object to `typeis.is`
+
+1.6.17 / 2019-04-25
+===================
+
+  * deps: mime-types@~2.1.24
+    - Add Apple file extensions from IANA
+    - Add extension `.csl` to `application/vnd.citationstyles.style+xml`
+    - Add extension `.es` to `application/ecmascript`
+    - Add extension `.nq` to `application/n-quads`
+    - Add extension `.nt` to `application/n-triples`
+    - Add extension `.owl` to `application/rdf+xml`
+    - Add extensions `.siv` and `.sieve` to `application/sieve`
+    - Add extensions from IANA for `image/*` types
+    - Add extensions from IANA for `model/*` types
+    - Add extensions to HEIC image types
+    - Add new mime types
+    - Add `text/mdx` with extension `.mdx`
+  * perf: prevent internal `throw` on invalid type
+
+1.6.16 / 2018-02-16
+===================
+
+  * deps: mime-types@~2.1.18
+    - Add `application/raml+yaml` with extension `.raml`
+    - Add `application/wasm` with extension `.wasm`
+    - Add `text/shex` with extension `.shex`
+    - Add extensions for JPEG-2000 images
+    - Add extensions from IANA for `message/*` types
+    - Add extension `.mjs` to `application/javascript`
+    - Add extension `.wadl` to `application/vnd.sun.wadl+xml`
+    - Add extension `.gz` to `application/gzip`
+    - Add glTF types and extensions
+    - Add new mime types
+    - Update extensions `.md` and `.markdown` to be `text/markdown`
+    - Update font MIME types
+    - Update `text/hjson` to registered `application/hjson`
+
+1.6.15 / 2017-03-31
+===================
+
+  * deps: mime-types@~2.1.15
+    - Add new mime types
+
+1.6.14 / 2016-11-18
+===================
+
+  * deps: mime-types@~2.1.13
+    - Add new mime types
+
+1.6.13 / 2016-05-18
+===================
+
+  * deps: mime-types@~2.1.11
+    - Add new mime types
+
+1.6.12 / 2016-02-28
+===================
+
+  * deps: mime-types@~2.1.10
+    - Add new mime types
+    - Fix extension of `application/dash+xml`
+    - Update primary extension for `audio/mp4`
+
+1.6.11 / 2016-01-29
+===================
+
+  * deps: mime-types@~2.1.9
+    - Add new mime types
+
+1.6.10 / 2015-12-01
+===================
+
+  * deps: mime-types@~2.1.8
+    - Add new mime types
+
+1.6.9 / 2015-09-27
+==================
+
+  * deps: mime-types@~2.1.7
+    - Add new mime types
+
+1.6.8 / 2015-09-04
+==================
+
+  * deps: mime-types@~2.1.6
+    - Add new mime types
+
+1.6.7 / 2015-08-20
+==================
+
+  * Fix type error when given invalid type to match against
+  * deps: mime-types@~2.1.5
+    - Add new mime types
+
+1.6.6 / 2015-07-31
+==================
+
+  * deps: mime-types@~2.1.4
+    - Add new mime types
+
+1.6.5 / 2015-07-16
+==================
+
+  * deps: mime-types@~2.1.3
+    - Add new mime types
+
+1.6.4 / 2015-07-01
+==================
+
+  * deps: mime-types@~2.1.2
+    - Add new mime types
+  * perf: enable strict mode
+  * perf: remove argument reassignment
+
+1.6.3 / 2015-06-08
+==================
+
+  * deps: mime-types@~2.1.1
+    - Add new mime types
+  * perf: reduce try block size
+  * perf: remove bitwise operations
+
+1.6.2 / 2015-05-10
+==================
+
+  * deps: mime-types@~2.0.11
+    - Add new mime types
+
+1.6.1 / 2015-03-13
+==================
+
+  * deps: mime-types@~2.0.10
+    - Add new mime types
+
+1.6.0 / 2015-02-12
+==================
+
+  * fix false-positives in `hasBody` `Transfer-Encoding` check
+  * support wildcard for both type and subtype (`*/*`)
+
+1.5.7 / 2015-02-09
+==================
+
+  * fix argument reassignment
+  * deps: mime-types@~2.0.9
+    - Add new mime types
+
+1.5.6 / 2015-01-29
+==================
+
+  * deps: mime-types@~2.0.8
+    - Add new mime types
+
+1.5.5 / 2014-12-30
+==================
+
+  * deps: mime-types@~2.0.7
+    - Add new mime types
+    - Fix missing extensions
+    - Fix various invalid MIME type entries
+    - Remove example template MIME types
+    - deps: mime-db@~1.5.0
+
+1.5.4 / 2014-12-10
+==================
+
+  * deps: mime-types@~2.0.4
+    - Add new mime types
+    - deps: mime-db@~1.3.0
+
+1.5.3 / 2014-11-09
+==================
+
+  * deps: mime-types@~2.0.3
+    - Add new mime types
+    - deps: mime-db@~1.2.0
+
+1.5.2 / 2014-09-28
+==================
+
+  * deps: mime-types@~2.0.2
+    - Add new mime types
+    - deps: mime-db@~1.1.0
+
+1.5.1 / 2014-09-07
+==================
+
+  * Support Node.js 0.6
+  * deps: media-typer@0.3.0
+  * deps: mime-types@~2.0.1
+    - Support Node.js 0.6
+
+1.5.0 / 2014-09-05
+==================
+
+ * fix `hasbody` to be true for `content-length: 0`
+
+1.4.0 / 2014-09-02
+==================
+
+ * update mime-types
+
+1.3.2 / 2014-06-24
+==================
+
+ * use `~` range on mime-types
+
+1.3.1 / 2014-06-19
+==================
+
+ * fix global variable leak
+
+1.3.0 / 2014-06-19
+==================
+
+ * improve type parsing
+
+   - invalid media type never matches
+   - media type not case-sensitive
+   - extra LWS does not affect results
+
+1.2.2 / 2014-06-19
+==================
+
+ * fix behavior on unknown type argument
+
+1.2.1 / 2014-06-03
+==================
+
+ * switch dependency from `mime` to `mime-types@1.0.0`
+
+1.2.0 / 2014-05-11
+==================
+
+ * support suffix matching:
+
+   - `+json` matches `application/vnd+json`
+   - `*/vnd+json` matches `application/vnd+json`
+   - `application/*+json` matches `application/vnd+json`
+
+1.1.0 / 2014-04-12
+==================
+
+ * add non-array values support
+ * expose internal utilities:
+
+   - `.is()`
+   - `.hasBody()`
+   - `.normalize()`
+   - `.match()`
+
+1.0.1 / 2014-03-30
+==================
+
+ * add `multipart` as a shorthand

backend/node_modules/multer/node_modules/type-is/LICENSE

@@ -0,0 +1,23 @@
+(The MIT License)
+
+Copyright (c) 2014 Jonathan Ong <me@jongleberry.com>
+Copyright (c) 2014-2015 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.

backend/node_modules/multer/node_modules/type-is/README.md

@@ -0,0 +1,170 @@
+# type-is
+
+[![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]
+
+Infer the content-type of a request.
+
+### Install
+
+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 type-is
+```
+
+## API
+
+```js
+var http = require('http')
+var typeis = require('type-is')
+
+http.createServer(function (req, res) {
+  var istext = typeis(req, ['text/*'])
+  res.end('you ' + (istext ? 'sent' : 'did not send') + ' me text')
+})
+```
+
+### typeis(request, types)
+
+Checks if the `request` is one of the `types`. If the request has no body,
+even if there is a `Content-Type` header, then `null` is returned. If the
+`Content-Type` header is invalid or does not matches any of the `types`, then
+`false` is returned. Otherwise, a string of the type that matched is returned.
+
+The `request` argument is expected to be a Node.js HTTP request. The `types`
+argument is an array of type strings.
+
+Each type in the `types` array can be one of the following:
+
+- A file extension name such as `json`. This name will be returned if matched.
+- A mime type such as `application/json`.
+- A mime type with a wildcard such as `*/*` or `*/json` or `application/*`.
+  The full mime type will be returned if matched.
+- A suffix such as `+json`. This can be combined with a wildcard such as
+  `*/vnd+json` or `application/*+json`. The full mime type will be returned
+  if matched.
+
+Some examples to illustrate the inputs and returned value:
+
+<!-- eslint-disable no-undef -->
+
+```js
+// req.headers.content-type = 'application/json'
+
+typeis(req, ['json']) // => 'json'
+typeis(req, ['html', 'json']) // => 'json'
+typeis(req, ['application/*']) // => 'application/json'
+typeis(req, ['application/json']) // => 'application/json'
+
+typeis(req, ['html']) // => false
+```
+
+### typeis.hasBody(request)
+
+Returns a Boolean if the given `request` has a body, regardless of the
+`Content-Type` header.
+
+Having a body has no relation to how large the body is (it may be 0 bytes).
+This is similar to how file existence works. If a body does exist, then this
+indicates that there is data to read from the Node.js request stream.
+
+<!-- eslint-disable no-undef -->
+
+```js
+if (typeis.hasBody(req)) {
+  // read the body, since there is one
+
+  req.on('data', function (chunk) {
+    // ...
+  })
+}
+```
+
+### typeis.is(mediaType, types)
+
+Checks if the `mediaType` is one of the `types`. If the `mediaType` is invalid
+or does not matches any of the `types`, then `false` is returned. Otherwise, a
+string of the type that matched is returned.
+
+The `mediaType` argument is expected to be a
+[media type](https://tools.ietf.org/html/rfc6838) string. The `types` argument
+is an array of type strings.
+
+Each type in the `types` array can be one of the following:
+
+- A file extension name such as `json`. This name will be returned if matched.
+- A mime type such as `application/json`.
+- A mime type with a wildcard such as `*/*` or `*/json` or `application/*`.
+  The full mime type will be returned if matched.
+- A suffix such as `+json`. This can be combined with a wildcard such as
+  `*/vnd+json` or `application/*+json`. The full mime type will be returned
+  if matched.
+
+Some examples to illustrate the inputs and returned value:
+
+<!-- eslint-disable no-undef -->
+
+```js
+var mediaType = 'application/json'
+
+typeis.is(mediaType, ['json']) // => 'json'
+typeis.is(mediaType, ['html', 'json']) // => 'json'
+typeis.is(mediaType, ['application/*']) // => 'application/json'
+typeis.is(mediaType, ['application/json']) // => 'application/json'
+
+typeis.is(mediaType, ['html']) // => false
+```
+
+## Examples
+
+### Example body parser
+
+```js
+var express = require('express')
+var typeis = require('type-is')
+
+var app = express()
+
+app.use(function bodyParser (req, res, next) {
+  if (!typeis.hasBody(req)) {
+    return next()
+  }
+
+  switch (typeis(req, ['urlencoded', 'json', 'multipart'])) {
+    case 'urlencoded':
+      // parse urlencoded body
+      throw new Error('implement urlencoded body parsing')
+    case 'json':
+      // parse json body
+      throw new Error('implement json body parsing')
+    case 'multipart':
+      // parse multipart body
+      throw new Error('implement multipart body parsing')
+    default:
+      // 415 error code
+      res.statusCode = 415
+      res.end()
+      break
+  }
+})
+```
+
+## License
+
+[MIT](LICENSE)
+
+[coveralls-image]: https://badgen.net/coveralls/c/github/jshttp/type-is/master
+[coveralls-url]: https://coveralls.io/r/jshttp/type-is?branch=master
+[node-version-image]: https://badgen.net/npm/node/type-is
+[node-version-url]: https://nodejs.org/en/download
+[npm-downloads-image]: https://badgen.net/npm/dm/type-is
+[npm-url]: https://npmjs.org/package/type-is
+[npm-version-image]: https://badgen.net/npm/v/type-is
+[travis-image]: https://badgen.net/travis/jshttp/type-is/master
+[travis-url]: https://travis-ci.org/jshttp/type-is

backend/node_modules/multer/node_modules/type-is/index.js

@@ -0,0 +1,266 @@
+/*!
+ * type-is
+ * Copyright(c) 2014 Jonathan Ong
+ * Copyright(c) 2014-2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict'
+
+/**
+ * Module dependencies.
+ * @private
+ */
+
+var typer = require('media-typer')
+var mime = require('mime-types')
+
+/**
+ * Module exports.
+ * @public
+ */
+
+module.exports = typeofrequest
+module.exports.is = typeis
+module.exports.hasBody = hasbody
+module.exports.normalize = normalize
+module.exports.match = mimeMatch
+
+/**
+ * Compare a `value` content-type with `types`.
+ * Each `type` can be an extension like `html`,
+ * a special shortcut like `multipart` or `urlencoded`,
+ * or a mime type.
+ *
+ * If no types match, `false` is returned.
+ * Otherwise, the first `type` that matches is returned.
+ *
+ * @param {String} value
+ * @param {Array} types
+ * @public
+ */
+
+function typeis (value, types_) {
+  var i
+  var types = types_
+
+  // remove parameters and normalize
+  var val = tryNormalizeType(value)
+
+  // no type or invalid
+  if (!val) {
+    return false
+  }
+
+  // support flattened arguments
+  if (types && !Array.isArray(types)) {
+    types = new Array(arguments.length - 1)
+    for (i = 0; i < types.length; i++) {
+      types[i] = arguments[i + 1]
+    }
+  }
+
+  // no types, return the content type
+  if (!types || !types.length) {
+    return val
+  }
+
+  var type
+  for (i = 0; i < types.length; i++) {
+    if (mimeMatch(normalize(type = types[i]), val)) {
+      return type[0] === '+' || type.indexOf('*') !== -1
+        ? val
+        : type
+    }
+  }
+
+  // no matches
+  return false
+}
+
+/**
+ * Check if a request has a request body.
+ * A request with a body __must__ either have `transfer-encoding`
+ * or `content-length` headers set.
+ * http://www.w3.org/Protocols/rfc2616/rfc2616-sec4.html#sec4.3
+ *
+ * @param {Object} request
+ * @return {Boolean}
+ * @public
+ */
+
+function hasbody (req) {
+  return req.headers['transfer-encoding'] !== undefined ||
+    !isNaN(req.headers['content-length'])
+}
+
+/**
+ * Check if the incoming request contains the "Content-Type"
+ * header field, and it contains any of the give mime `type`s.
+ * If there is no request body, `null` is returned.
+ * If there is no content type, `false` is returned.
+ * Otherwise, it returns the first `type` that matches.
+ *
+ * Examples:
+ *
+ *     // With Content-Type: text/html; charset=utf-8
+ *     this.is('html'); // => 'html'
+ *     this.is('text/html'); // => 'text/html'
+ *     this.is('text/*', 'application/json'); // => 'text/html'
+ *
+ *     // When Content-Type is application/json
+ *     this.is('json', 'urlencoded'); // => 'json'
+ *     this.is('application/json'); // => 'application/json'
+ *     this.is('html', 'application/*'); // => 'application/json'
+ *
+ *     this.is('html'); // => false
+ *
+ * @param {String|Array} types...
+ * @return {String|false|null}
+ * @public
+ */
+
+function typeofrequest (req, types_) {
+  var types = types_
+
+  // no body
+  if (!hasbody(req)) {
+    return null
+  }
+
+  // support flattened arguments
+  if (arguments.length > 2) {
+    types = new Array(arguments.length - 1)
+    for (var i = 0; i < types.length; i++) {
+      types[i] = arguments[i + 1]
+    }
+  }
+
+  // request content type
+  var value = req.headers['content-type']
+
+  return typeis(value, types)
+}
+
+/**
+ * Normalize a mime type.
+ * If it's a shorthand, expand it to a valid mime type.
+ *
+ * In general, you probably want:
+ *
+ *   var type = is(req, ['urlencoded', 'json', 'multipart']);
+ *
+ * Then use the appropriate body parsers.
+ * These three are the most common request body types
+ * and are thus ensured to work.
+ *
+ * @param {String} type
+ * @private
+ */
+
+function normalize (type) {
+  if (typeof type !== 'string') {
+    // invalid type
+    return false
+  }
+
+  switch (type) {
+    case 'urlencoded':
+      return 'application/x-www-form-urlencoded'
+    case 'multipart':
+      return 'multipart/*'
+  }
+
+  if (type[0] === '+') {
+    // "+json" -> "*/*+json" expando
+    return '*/*' + type
+  }
+
+  return type.indexOf('/') === -1
+    ? mime.lookup(type)
+    : type
+}
+
+/**
+ * Check if `expected` mime type
+ * matches `actual` mime type with
+ * wildcard and +suffix support.
+ *
+ * @param {String} expected
+ * @param {String} actual
+ * @return {Boolean}
+ * @private
+ */
+
+function mimeMatch (expected, actual) {
+  // invalid type
+  if (expected === false) {
+    return false
+  }
+
+  // split types
+  var actualParts = actual.split('/')
+  var expectedParts = expected.split('/')
+
+  // invalid format
+  if (actualParts.length !== 2 || expectedParts.length !== 2) {
+    return false
+  }
+
+  // validate type
+  if (expectedParts[0] !== '*' && expectedParts[0] !== actualParts[0]) {
+    return false
+  }
+
+  // validate suffix wildcard
+  if (expectedParts[1].substr(0, 2) === '*+') {
+    return expectedParts[1].length <= actualParts[1].length + 1 &&
+      expectedParts[1].substr(1) === actualParts[1].substr(1 - expectedParts[1].length)
+  }
+
+  // validate subtype
+  if (expectedParts[1] !== '*' && expectedParts[1] !== actualParts[1]) {
+    return false
+  }
+
+  return true
+}
+
+/**
+ * Normalize a type and remove parameters.
+ *
+ * @param {string} value
+ * @return {string}
+ * @private
+ */
+
+function normalizeType (value) {
+  // parse the type
+  var type = typer.parse(value)
+
+  // remove the parameters
+  type.parameters = undefined
+
+  // reformat it
+  return typer.format(type)
+}
+
+/**
+ * Try to normalize a type and remove parameters.
+ *
+ * @param {string} value
+ * @return {string}
+ * @private
+ */
+
+function tryNormalizeType (value) {
+  if (!value) {
+    return null
+  }
+
+  try {
+    return normalizeType(value)
+  } catch (err) {
+    return null
+  }
+}

backend/node_modules/multer/node_modules/type-is/package.json

@@ -0,0 +1,45 @@
+{
+  "name": "type-is",
+  "description": "Infer the content-type of a request.",
+  "version": "1.6.18",
+  "contributors": [
+    "Douglas Christopher Wilson <doug@somethingdoug.com>",
+    "Jonathan Ong <me@jongleberry.com> (http://jongleberry.com)"
+  ],
+  "license": "MIT",
+  "repository": "jshttp/type-is",
+  "dependencies": {
+    "media-typer": "0.3.0",
+    "mime-types": "~2.1.24"
+  },
+  "devDependencies": {
+    "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"
+  },
+  "engines": {
+    "node": ">= 0.6"
+  },
+  "files": [
+    "LICENSE",
+    "HISTORY.md",
+    "index.js"
+  ],
+  "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",
+    "type",
+    "checking"
+  ]
+}