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-rw-r--r--node_modules/express/lib/application.js631
-rw-r--r--node_modules/express/lib/express.js81
-rw-r--r--node_modules/express/lib/request.js514
-rw-r--r--node_modules/express/lib/response.js1053
-rw-r--r--node_modules/express/lib/utils.js271
-rw-r--r--node_modules/express/lib/view.js205
6 files changed, 2755 insertions, 0 deletions
diff --git a/node_modules/express/lib/application.js b/node_modules/express/lib/application.js
new file mode 100644
index 0000000..838b882
--- /dev/null
+++ b/node_modules/express/lib/application.js
@@ -0,0 +1,631 @@
+/*!
+ * express
+ * Copyright(c) 2009-2013 TJ Holowaychuk
+ * Copyright(c) 2013 Roman Shtylman
+ * Copyright(c) 2014-2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict';
+
+/**
+ * Module dependencies.
+ * @private
+ */
+
+var finalhandler = require('finalhandler');
+var debug = require('debug')('express:application');
+var View = require('./view');
+var http = require('node:http');
+var methods = require('./utils').methods;
+var compileETag = require('./utils').compileETag;
+var compileQueryParser = require('./utils').compileQueryParser;
+var compileTrust = require('./utils').compileTrust;
+var resolve = require('node:path').resolve;
+var once = require('once')
+var Router = require('router');
+
+/**
+ * Module variables.
+ * @private
+ */
+
+var slice = Array.prototype.slice;
+var flatten = Array.prototype.flat;
+
+/**
+ * Application prototype.
+ */
+
+var app = exports = module.exports = {};
+
+/**
+ * Variable for trust proxy inheritance back-compat
+ * @private
+ */
+
+var trustProxyDefaultSymbol = '@@symbol:trust_proxy_default';
+
+/**
+ * Initialize the server.
+ *
+ * - setup default configuration
+ * - setup default middleware
+ * - setup route reflection methods
+ *
+ * @private
+ */
+
+app.init = function init() {
+ var router = null;
+
+ this.cache = Object.create(null);
+ this.engines = Object.create(null);
+ this.settings = Object.create(null);
+
+ this.defaultConfiguration();
+
+ // Setup getting to lazily add base router
+ Object.defineProperty(this, 'router', {
+ configurable: true,
+ enumerable: true,
+ get: function getrouter() {
+ if (router === null) {
+ router = new Router({
+ caseSensitive: this.enabled('case sensitive routing'),
+ strict: this.enabled('strict routing')
+ });
+ }
+
+ return router;
+ }
+ });
+};
+
+/**
+ * Initialize application configuration.
+ * @private
+ */
+
+app.defaultConfiguration = function defaultConfiguration() {
+ var env = process.env.NODE_ENV || 'development';
+
+ // default settings
+ this.enable('x-powered-by');
+ this.set('etag', 'weak');
+ this.set('env', env);
+ this.set('query parser', 'simple')
+ this.set('subdomain offset', 2);
+ this.set('trust proxy', false);
+
+ // trust proxy inherit back-compat
+ Object.defineProperty(this.settings, trustProxyDefaultSymbol, {
+ configurable: true,
+ value: true
+ });
+
+ debug('booting in %s mode', env);
+
+ this.on('mount', function onmount(parent) {
+ // inherit trust proxy
+ if (this.settings[trustProxyDefaultSymbol] === true
+ && typeof parent.settings['trust proxy fn'] === 'function') {
+ delete this.settings['trust proxy'];
+ delete this.settings['trust proxy fn'];
+ }
+
+ // inherit protos
+ Object.setPrototypeOf(this.request, parent.request)
+ Object.setPrototypeOf(this.response, parent.response)
+ Object.setPrototypeOf(this.engines, parent.engines)
+ Object.setPrototypeOf(this.settings, parent.settings)
+ });
+
+ // setup locals
+ this.locals = Object.create(null);
+
+ // top-most app is mounted at /
+ this.mountpath = '/';
+
+ // default locals
+ this.locals.settings = this.settings;
+
+ // default configuration
+ this.set('view', View);
+ this.set('views', resolve('views'));
+ this.set('jsonp callback name', 'callback');
+
+ if (env === 'production') {
+ this.enable('view cache');
+ }
+};
+
+/**
+ * Dispatch a req, res pair into the application. Starts pipeline processing.
+ *
+ * If no callback is provided, then default error handlers will respond
+ * in the event of an error bubbling through the stack.
+ *
+ * @private
+ */
+
+app.handle = function handle(req, res, callback) {
+ // final handler
+ var done = callback || finalhandler(req, res, {
+ env: this.get('env'),
+ onerror: logerror.bind(this)
+ });
+
+ // set powered by header
+ if (this.enabled('x-powered-by')) {
+ res.setHeader('X-Powered-By', 'Express');
+ }
+
+ // set circular references
+ req.res = res;
+ res.req = req;
+
+ // alter the prototypes
+ Object.setPrototypeOf(req, this.request)
+ Object.setPrototypeOf(res, this.response)
+
+ // setup locals
+ if (!res.locals) {
+ res.locals = Object.create(null);
+ }
+
+ this.router.handle(req, res, done);
+};
+
+/**
+ * Proxy `Router#use()` to add middleware to the app router.
+ * See Router#use() documentation for details.
+ *
+ * If the _fn_ parameter is an express app, then it will be
+ * mounted at the _route_ specified.
+ *
+ * @public
+ */
+
+app.use = function use(fn) {
+ var offset = 0;
+ var path = '/';
+
+ // default path to '/'
+ // disambiguate app.use([fn])
+ if (typeof fn !== 'function') {
+ var arg = fn;
+
+ while (Array.isArray(arg) && arg.length !== 0) {
+ arg = arg[0];
+ }
+
+ // first arg is the path
+ if (typeof arg !== 'function') {
+ offset = 1;
+ path = fn;
+ }
+ }
+
+ var fns = flatten.call(slice.call(arguments, offset), Infinity);
+
+ if (fns.length === 0) {
+ throw new TypeError('app.use() requires a middleware function')
+ }
+
+ // get router
+ var router = this.router;
+
+ fns.forEach(function (fn) {
+ // non-express app
+ if (!fn || !fn.handle || !fn.set) {
+ return router.use(path, fn);
+ }
+
+ debug('.use app under %s', path);
+ fn.mountpath = path;
+ fn.parent = this;
+
+ // restore .app property on req and res
+ router.use(path, function mounted_app(req, res, next) {
+ var orig = req.app;
+ fn.handle(req, res, function (err) {
+ Object.setPrototypeOf(req, orig.request)
+ Object.setPrototypeOf(res, orig.response)
+ next(err);
+ });
+ });
+
+ // mounted an app
+ fn.emit('mount', this);
+ }, this);
+
+ return this;
+};
+
+/**
+ * Proxy to the app `Router#route()`
+ * Returns a new `Route` instance for the _path_.
+ *
+ * Routes are isolated middleware stacks for specific paths.
+ * See the Route api docs for details.
+ *
+ * @public
+ */
+
+app.route = function route(path) {
+ return this.router.route(path);
+};
+
+/**
+ * Register the given template engine callback `fn`
+ * as `ext`.
+ *
+ * By default will `require()` the engine based on the
+ * file extension. For example if you try to render
+ * a "foo.ejs" file Express will invoke the following internally:
+ *
+ * app.engine('ejs', require('ejs').__express);
+ *
+ * For engines that do not provide `.__express` out of the box,
+ * or if you wish to "map" a different extension to the template engine
+ * you may use this method. For example mapping the EJS template engine to
+ * ".html" files:
+ *
+ * app.engine('html', require('ejs').renderFile);
+ *
+ * In this case EJS provides a `.renderFile()` method with
+ * the same signature that Express expects: `(path, options, callback)`,
+ * though note that it aliases this method as `ejs.__express` internally
+ * so if you're using ".ejs" extensions you don't need to do anything.
+ *
+ * Some template engines do not follow this convention, the
+ * [Consolidate.js](https://github.com/tj/consolidate.js)
+ * library was created to map all of node's popular template
+ * engines to follow this convention, thus allowing them to
+ * work seamlessly within Express.
+ *
+ * @param {String} ext
+ * @param {Function} fn
+ * @return {app} for chaining
+ * @public
+ */
+
+app.engine = function engine(ext, fn) {
+ if (typeof fn !== 'function') {
+ throw new Error('callback function required');
+ }
+
+ // get file extension
+ var extension = ext[0] !== '.'
+ ? '.' + ext
+ : ext;
+
+ // store engine
+ this.engines[extension] = fn;
+
+ return this;
+};
+
+/**
+ * Proxy to `Router#param()` with one added api feature. The _name_ parameter
+ * can be an array of names.
+ *
+ * See the Router#param() docs for more details.
+ *
+ * @param {String|Array} name
+ * @param {Function} fn
+ * @return {app} for chaining
+ * @public
+ */
+
+app.param = function param(name, fn) {
+ if (Array.isArray(name)) {
+ for (var i = 0; i < name.length; i++) {
+ this.param(name[i], fn);
+ }
+
+ return this;
+ }
+
+ this.router.param(name, fn);
+
+ return this;
+};
+
+/**
+ * Assign `setting` to `val`, or return `setting`'s value.
+ *
+ * app.set('foo', 'bar');
+ * app.set('foo');
+ * // => "bar"
+ *
+ * Mounted servers inherit their parent server's settings.
+ *
+ * @param {String} setting
+ * @param {*} [val]
+ * @return {Server} for chaining
+ * @public
+ */
+
+app.set = function set(setting, val) {
+ if (arguments.length === 1) {
+ // app.get(setting)
+ return this.settings[setting];
+ }
+
+ debug('set "%s" to %o', setting, val);
+
+ // set value
+ this.settings[setting] = val;
+
+ // trigger matched settings
+ switch (setting) {
+ case 'etag':
+ this.set('etag fn', compileETag(val));
+ break;
+ case 'query parser':
+ this.set('query parser fn', compileQueryParser(val));
+ break;
+ case 'trust proxy':
+ this.set('trust proxy fn', compileTrust(val));
+
+ // trust proxy inherit back-compat
+ Object.defineProperty(this.settings, trustProxyDefaultSymbol, {
+ configurable: true,
+ value: false
+ });
+
+ break;
+ }
+
+ return this;
+};
+
+/**
+ * Return the app's absolute pathname
+ * based on the parent(s) that have
+ * mounted it.
+ *
+ * For example if the application was
+ * mounted as "/admin", which itself
+ * was mounted as "/blog" then the
+ * return value would be "/blog/admin".
+ *
+ * @return {String}
+ * @private
+ */
+
+app.path = function path() {
+ return this.parent
+ ? this.parent.path() + this.mountpath
+ : '';
+};
+
+/**
+ * Check if `setting` is enabled (truthy).
+ *
+ * app.enabled('foo')
+ * // => false
+ *
+ * app.enable('foo')
+ * app.enabled('foo')
+ * // => true
+ *
+ * @param {String} setting
+ * @return {Boolean}
+ * @public
+ */
+
+app.enabled = function enabled(setting) {
+ return Boolean(this.set(setting));
+};
+
+/**
+ * Check if `setting` is disabled.
+ *
+ * app.disabled('foo')
+ * // => true
+ *
+ * app.enable('foo')
+ * app.disabled('foo')
+ * // => false
+ *
+ * @param {String} setting
+ * @return {Boolean}
+ * @public
+ */
+
+app.disabled = function disabled(setting) {
+ return !this.set(setting);
+};
+
+/**
+ * Enable `setting`.
+ *
+ * @param {String} setting
+ * @return {app} for chaining
+ * @public
+ */
+
+app.enable = function enable(setting) {
+ return this.set(setting, true);
+};
+
+/**
+ * Disable `setting`.
+ *
+ * @param {String} setting
+ * @return {app} for chaining
+ * @public
+ */
+
+app.disable = function disable(setting) {
+ return this.set(setting, false);
+};
+
+/**
+ * Delegate `.VERB(...)` calls to `router.VERB(...)`.
+ */
+
+methods.forEach(function (method) {
+ app[method] = function (path) {
+ if (method === 'get' && arguments.length === 1) {
+ // app.get(setting)
+ return this.set(path);
+ }
+
+ var route = this.route(path);
+ route[method].apply(route, slice.call(arguments, 1));
+ return this;
+ };
+});
+
+/**
+ * Special-cased "all" method, applying the given route `path`,
+ * middleware, and callback to _every_ HTTP method.
+ *
+ * @param {String} path
+ * @param {Function} ...
+ * @return {app} for chaining
+ * @public
+ */
+
+app.all = function all(path) {
+ var route = this.route(path);
+ var args = slice.call(arguments, 1);
+
+ for (var i = 0; i < methods.length; i++) {
+ route[methods[i]].apply(route, args);
+ }
+
+ return this;
+};
+
+/**
+ * Render the given view `name` name with `options`
+ * and a callback accepting an error and the
+ * rendered template string.
+ *
+ * Example:
+ *
+ * app.render('email', { name: 'Tobi' }, function(err, html){
+ * // ...
+ * })
+ *
+ * @param {String} name
+ * @param {Object|Function} options or fn
+ * @param {Function} callback
+ * @public
+ */
+
+app.render = function render(name, options, callback) {
+ var cache = this.cache;
+ var done = callback;
+ var engines = this.engines;
+ var opts = options;
+ var view;
+
+ // support callback function as second arg
+ if (typeof options === 'function') {
+ done = options;
+ opts = {};
+ }
+
+ // merge options
+ var renderOptions = { ...this.locals, ...opts._locals, ...opts };
+
+ // set .cache unless explicitly provided
+ if (renderOptions.cache == null) {
+ renderOptions.cache = this.enabled('view cache');
+ }
+
+ // primed cache
+ if (renderOptions.cache) {
+ view = cache[name];
+ }
+
+ // view
+ if (!view) {
+ var View = this.get('view');
+
+ view = new View(name, {
+ defaultEngine: this.get('view engine'),
+ root: this.get('views'),
+ engines: engines
+ });
+
+ if (!view.path) {
+ var dirs = Array.isArray(view.root) && view.root.length > 1
+ ? 'directories "' + view.root.slice(0, -1).join('", "') + '" or "' + view.root[view.root.length - 1] + '"'
+ : 'directory "' + view.root + '"'
+ var err = new Error('Failed to lookup view "' + name + '" in views ' + dirs);
+ err.view = view;
+ return done(err);
+ }
+
+ // prime the cache
+ if (renderOptions.cache) {
+ cache[name] = view;
+ }
+ }
+
+ // render
+ tryRender(view, renderOptions, done);
+};
+
+/**
+ * Listen for connections.
+ *
+ * A node `http.Server` is returned, with this
+ * application (which is a `Function`) as its
+ * callback. If you wish to create both an HTTP
+ * and HTTPS server you may do so with the "http"
+ * and "https" modules as shown here:
+ *
+ * var http = require('node:http')
+ * , https = require('node:https')
+ * , express = require('express')
+ * , app = express();
+ *
+ * http.createServer(app).listen(80);
+ * https.createServer({ ... }, app).listen(443);
+ *
+ * @return {http.Server}
+ * @public
+ */
+
+app.listen = function listen() {
+ var server = http.createServer(this)
+ var args = slice.call(arguments)
+ if (typeof args[args.length - 1] === 'function') {
+ var done = args[args.length - 1] = once(args[args.length - 1])
+ server.once('error', done)
+ }
+ return server.listen.apply(server, args)
+}
+
+/**
+ * Log error using console.error.
+ *
+ * @param {Error} err
+ * @private
+ */
+
+function logerror(err) {
+ /* istanbul ignore next */
+ if (this.get('env') !== 'test') console.error(err.stack || err.toString());
+}
+
+/**
+ * Try rendering a view.
+ * @private
+ */
+
+function tryRender(view, options, callback) {
+ try {
+ view.render(options, callback);
+ } catch (err) {
+ callback(err);
+ }
+}
diff --git a/node_modules/express/lib/express.js b/node_modules/express/lib/express.js
new file mode 100644
index 0000000..2d502eb
--- /dev/null
+++ b/node_modules/express/lib/express.js
@@ -0,0 +1,81 @@
+/*!
+ * express
+ * Copyright(c) 2009-2013 TJ Holowaychuk
+ * Copyright(c) 2013 Roman Shtylman
+ * Copyright(c) 2014-2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict';
+
+/**
+ * Module dependencies.
+ */
+
+var bodyParser = require('body-parser')
+var EventEmitter = require('node:events').EventEmitter;
+var mixin = require('merge-descriptors');
+var proto = require('./application');
+var Router = require('router');
+var req = require('./request');
+var res = require('./response');
+
+/**
+ * Expose `createApplication()`.
+ */
+
+exports = module.exports = createApplication;
+
+/**
+ * Create an express application.
+ *
+ * @return {Function}
+ * @api public
+ */
+
+function createApplication() {
+ var app = function(req, res, next) {
+ app.handle(req, res, next);
+ };
+
+ mixin(app, EventEmitter.prototype, false);
+ mixin(app, proto, false);
+
+ // expose the prototype that will get set on requests
+ app.request = Object.create(req, {
+ app: { configurable: true, enumerable: true, writable: true, value: app }
+ })
+
+ // expose the prototype that will get set on responses
+ app.response = Object.create(res, {
+ app: { configurable: true, enumerable: true, writable: true, value: app }
+ })
+
+ app.init();
+ return app;
+}
+
+/**
+ * Expose the prototypes.
+ */
+
+exports.application = proto;
+exports.request = req;
+exports.response = res;
+
+/**
+ * Expose constructors.
+ */
+
+exports.Route = Router.Route;
+exports.Router = Router;
+
+/**
+ * Expose middleware
+ */
+
+exports.json = bodyParser.json
+exports.raw = bodyParser.raw
+exports.static = require('serve-static');
+exports.text = bodyParser.text
+exports.urlencoded = bodyParser.urlencoded
diff --git a/node_modules/express/lib/request.js b/node_modules/express/lib/request.js
new file mode 100644
index 0000000..69990da
--- /dev/null
+++ b/node_modules/express/lib/request.js
@@ -0,0 +1,514 @@
+/*!
+ * express
+ * Copyright(c) 2009-2013 TJ Holowaychuk
+ * Copyright(c) 2013 Roman Shtylman
+ * Copyright(c) 2014-2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict';
+
+/**
+ * Module dependencies.
+ * @private
+ */
+
+var accepts = require('accepts');
+var isIP = require('node:net').isIP;
+var typeis = require('type-is');
+var http = require('node:http');
+var fresh = require('fresh');
+var parseRange = require('range-parser');
+var parse = require('parseurl');
+var proxyaddr = require('proxy-addr');
+
+/**
+ * Request prototype.
+ * @public
+ */
+
+var req = Object.create(http.IncomingMessage.prototype)
+
+/**
+ * Module exports.
+ * @public
+ */
+
+module.exports = req
+
+/**
+ * Return request header.
+ *
+ * The `Referrer` header field is special-cased,
+ * both `Referrer` and `Referer` are interchangeable.
+ *
+ * Examples:
+ *
+ * req.get('Content-Type');
+ * // => "text/plain"
+ *
+ * req.get('content-type');
+ * // => "text/plain"
+ *
+ * req.get('Something');
+ * // => undefined
+ *
+ * Aliased as `req.header()`.
+ *
+ * @param {String} name
+ * @return {String}
+ * @public
+ */
+
+req.get =
+req.header = function header(name) {
+ if (!name) {
+ throw new TypeError('name argument is required to req.get');
+ }
+
+ if (typeof name !== 'string') {
+ throw new TypeError('name must be a string to req.get');
+ }
+
+ var lc = name.toLowerCase();
+
+ switch (lc) {
+ case 'referer':
+ case 'referrer':
+ return this.headers.referrer
+ || this.headers.referer;
+ default:
+ return this.headers[lc];
+ }
+};
+
+/**
+ * To do: update docs.
+ *
+ * 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", an extension name
+ * such as "json", a comma-delimited list such as "json, html, text/plain",
+ * an argument list such as `"json", "html", "text/plain"`,
+ * 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
+ * req.accepts('html');
+ * // => "html"
+ *
+ * // Accept: text/*, application/json
+ * req.accepts('html');
+ * // => "html"
+ * req.accepts('text/html');
+ * // => "text/html"
+ * req.accepts('json, text');
+ * // => "json"
+ * req.accepts('application/json');
+ * // => "application/json"
+ *
+ * // Accept: text/*, application/json
+ * req.accepts('image/png');
+ * req.accepts('png');
+ * // => undefined
+ *
+ * // Accept: text/*;q=.5, application/json
+ * req.accepts(['html', 'json']);
+ * req.accepts('html', 'json');
+ * req.accepts('html, json');
+ * // => "json"
+ *
+ * @param {String|Array} type(s)
+ * @return {String|Array|Boolean}
+ * @public
+ */
+
+req.accepts = function(){
+ var accept = accepts(this);
+ return accept.types.apply(accept, arguments);
+};
+
+/**
+ * Check if the given `encoding`s are accepted.
+ *
+ * @param {String} ...encoding
+ * @return {String|Array}
+ * @public
+ */
+
+req.acceptsEncodings = function(){
+ var accept = accepts(this);
+ return accept.encodings.apply(accept, arguments);
+};
+
+/**
+ * Check if the given `charset`s are acceptable,
+ * otherwise you should respond with 406 "Not Acceptable".
+ *
+ * @param {String} ...charset
+ * @return {String|Array}
+ * @public
+ */
+
+req.acceptsCharsets = function(){
+ var accept = accepts(this);
+ return accept.charsets.apply(accept, arguments);
+};
+
+/**
+ * Check if the given `lang`s are acceptable,
+ * otherwise you should respond with 406 "Not Acceptable".
+ *
+ * @param {String} ...lang
+ * @return {String|Array}
+ * @public
+ */
+
+req.acceptsLanguages = function(...languages) {
+ return accepts(this).languages(...languages);
+};
+
+/**
+ * Parse Range header field, capping to the given `size`.
+ *
+ * Unspecified ranges such as "0-" require knowledge of your resource length. In
+ * the case of a byte range this is of course the total number of bytes. If the
+ * Range header field is not given `undefined` is returned, `-1` when unsatisfiable,
+ * and `-2` when syntactically invalid.
+ *
+ * When ranges are returned, the array has a "type" property which is the type of
+ * range that is required (most commonly, "bytes"). Each array element is an object
+ * with a "start" and "end" property for the portion of the range.
+ *
+ * The "combine" option can be set to `true` and overlapping & adjacent ranges
+ * will be combined into a single range.
+ *
+ * NOTE: remember that ranges are inclusive, so for example "Range: users=0-3"
+ * should respond with 4 users when available, not 3.
+ *
+ * @param {number} size
+ * @param {object} [options]
+ * @param {boolean} [options.combine=false]
+ * @return {number|array}
+ * @public
+ */
+
+req.range = function range(size, options) {
+ var range = this.get('Range');
+ if (!range) return;
+ return parseRange(size, range, options);
+};
+
+/**
+ * Parse the query string of `req.url`.
+ *
+ * This uses the "query parser" setting to parse the raw
+ * string into an object.
+ *
+ * @return {String}
+ * @api public
+ */
+
+defineGetter(req, 'query', function query(){
+ var queryparse = this.app.get('query parser fn');
+
+ if (!queryparse) {
+ // parsing is disabled
+ return Object.create(null);
+ }
+
+ var querystring = parse(this).query;
+
+ return queryparse(querystring);
+});
+
+/**
+ * Check if the incoming request contains the "Content-Type"
+ * header field, and it contains the given mime `type`.
+ *
+ * Examples:
+ *
+ * // With Content-Type: text/html; charset=utf-8
+ * req.is('html');
+ * req.is('text/html');
+ * req.is('text/*');
+ * // => true
+ *
+ * // When Content-Type is application/json
+ * req.is('json');
+ * req.is('application/json');
+ * req.is('application/*');
+ * // => true
+ *
+ * req.is('html');
+ * // => false
+ *
+ * @param {String|Array} types...
+ * @return {String|false|null}
+ * @public
+ */
+
+req.is = function is(types) {
+ var arr = types;
+
+ // support flattened arguments
+ if (!Array.isArray(types)) {
+ arr = new Array(arguments.length);
+ for (var i = 0; i < arr.length; i++) {
+ arr[i] = arguments[i];
+ }
+ }
+
+ return typeis(this, arr);
+};
+
+/**
+ * Return the protocol string "http" or "https"
+ * when requested with TLS. When the "trust proxy"
+ * setting trusts the socket address, the
+ * "X-Forwarded-Proto" header field will be trusted
+ * and used if present.
+ *
+ * If you're running behind a reverse proxy that
+ * supplies https for you this may be enabled.
+ *
+ * @return {String}
+ * @public
+ */
+
+defineGetter(req, 'protocol', function protocol(){
+ var proto = this.socket.encrypted
+ ? 'https'
+ : 'http';
+ var trust = this.app.get('trust proxy fn');
+
+ if (!trust(this.socket.remoteAddress, 0)) {
+ return proto;
+ }
+
+ // Note: X-Forwarded-Proto is normally only ever a
+ // single value, but this is to be safe.
+ var header = this.get('X-Forwarded-Proto') || proto
+ var index = header.indexOf(',')
+
+ return index !== -1
+ ? header.substring(0, index).trim()
+ : header.trim()
+});
+
+/**
+ * Short-hand for:
+ *
+ * req.protocol === 'https'
+ *
+ * @return {Boolean}
+ * @public
+ */
+
+defineGetter(req, 'secure', function secure(){
+ return this.protocol === 'https';
+});
+
+/**
+ * Return the remote address from the trusted proxy.
+ *
+ * The is the remote address on the socket unless
+ * "trust proxy" is set.
+ *
+ * @return {String}
+ * @public
+ */
+
+defineGetter(req, 'ip', function ip(){
+ var trust = this.app.get('trust proxy fn');
+ return proxyaddr(this, trust);
+});
+
+/**
+ * When "trust proxy" is set, trusted proxy addresses + client.
+ *
+ * For example if the value were "client, proxy1, proxy2"
+ * you would receive the array `["client", "proxy1", "proxy2"]`
+ * where "proxy2" is the furthest down-stream and "proxy1" and
+ * "proxy2" were trusted.
+ *
+ * @return {Array}
+ * @public
+ */
+
+defineGetter(req, 'ips', function ips() {
+ var trust = this.app.get('trust proxy fn');
+ var addrs = proxyaddr.all(this, trust);
+
+ // reverse the order (to farthest -> closest)
+ // and remove socket address
+ addrs.reverse().pop()
+
+ return addrs
+});
+
+/**
+ * Return subdomains as an array.
+ *
+ * Subdomains are the dot-separated parts of the host before the main domain of
+ * the app. By default, the domain of the app is assumed to be the last two
+ * parts of the host. This can be changed by setting "subdomain offset".
+ *
+ * For example, if the domain is "tobi.ferrets.example.com":
+ * If "subdomain offset" is not set, req.subdomains is `["ferrets", "tobi"]`.
+ * If "subdomain offset" is 3, req.subdomains is `["tobi"]`.
+ *
+ * @return {Array}
+ * @public
+ */
+
+defineGetter(req, 'subdomains', function subdomains() {
+ var hostname = this.hostname;
+
+ if (!hostname) return [];
+
+ var offset = this.app.get('subdomain offset');
+ var subdomains = !isIP(hostname)
+ ? hostname.split('.').reverse()
+ : [hostname];
+
+ return subdomains.slice(offset);
+});
+
+/**
+ * Short-hand for `url.parse(req.url).pathname`.
+ *
+ * @return {String}
+ * @public
+ */
+
+defineGetter(req, 'path', function path() {
+ return parse(this).pathname;
+});
+
+/**
+ * Parse the "Host" header field to a host.
+ *
+ * When the "trust proxy" setting trusts the socket
+ * address, the "X-Forwarded-Host" header field will
+ * be trusted.
+ *
+ * @return {String}
+ * @public
+ */
+
+defineGetter(req, 'host', function host(){
+ var trust = this.app.get('trust proxy fn');
+ var val = this.get('X-Forwarded-Host');
+
+ if (!val || !trust(this.socket.remoteAddress, 0)) {
+ val = this.get('Host');
+ } else if (val.indexOf(',') !== -1) {
+ // Note: X-Forwarded-Host is normally only ever a
+ // single value, but this is to be safe.
+ val = val.substring(0, val.indexOf(',')).trimRight()
+ }
+
+ return val || undefined;
+});
+
+/**
+ * Parse the "Host" header field to a hostname.
+ *
+ * When the "trust proxy" setting trusts the socket
+ * address, the "X-Forwarded-Host" header field will
+ * be trusted.
+ *
+ * @return {String}
+ * @api public
+ */
+
+defineGetter(req, 'hostname', function hostname(){
+ var host = this.host;
+
+ if (!host) return;
+
+ // IPv6 literal support
+ var offset = host[0] === '['
+ ? host.indexOf(']') + 1
+ : 0;
+ var index = host.indexOf(':', offset);
+
+ return index !== -1
+ ? host.substring(0, index)
+ : host;
+});
+
+/**
+ * Check if the request is fresh, aka
+ * Last-Modified or the ETag
+ * still match.
+ *
+ * @return {Boolean}
+ * @public
+ */
+
+defineGetter(req, 'fresh', function(){
+ var method = this.method;
+ var res = this.res
+ var status = res.statusCode
+
+ // GET or HEAD for weak freshness validation only
+ if ('GET' !== method && 'HEAD' !== method) return false;
+
+ // 2xx or 304 as per rfc2616 14.26
+ if ((status >= 200 && status < 300) || 304 === status) {
+ return fresh(this.headers, {
+ 'etag': res.get('ETag'),
+ 'last-modified': res.get('Last-Modified')
+ })
+ }
+
+ return false;
+});
+
+/**
+ * Check if the request is stale, aka
+ * "Last-Modified" and / or the "ETag" for the
+ * resource has changed.
+ *
+ * @return {Boolean}
+ * @public
+ */
+
+defineGetter(req, 'stale', function stale(){
+ return !this.fresh;
+});
+
+/**
+ * Check if the request was an _XMLHttpRequest_.
+ *
+ * @return {Boolean}
+ * @public
+ */
+
+defineGetter(req, 'xhr', function xhr(){
+ var val = this.get('X-Requested-With') || '';
+ return val.toLowerCase() === 'xmlhttprequest';
+});
+
+/**
+ * Helper function for creating a getter on an object.
+ *
+ * @param {Object} obj
+ * @param {String} name
+ * @param {Function} getter
+ * @private
+ */
+function defineGetter(obj, name, getter) {
+ Object.defineProperty(obj, name, {
+ configurable: true,
+ enumerable: true,
+ get: getter
+ });
+}
diff --git a/node_modules/express/lib/response.js b/node_modules/express/lib/response.js
new file mode 100644
index 0000000..7a2f0ec
--- /dev/null
+++ b/node_modules/express/lib/response.js
@@ -0,0 +1,1053 @@
+/*!
+ * express
+ * Copyright(c) 2009-2013 TJ Holowaychuk
+ * Copyright(c) 2014-2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict';
+
+/**
+ * Module dependencies.
+ * @private
+ */
+
+var contentDisposition = require('content-disposition');
+var createError = require('http-errors')
+var deprecate = require('depd')('express');
+var encodeUrl = require('encodeurl');
+var escapeHtml = require('escape-html');
+var http = require('node:http');
+var onFinished = require('on-finished');
+var mime = require('mime-types')
+var path = require('node:path');
+var pathIsAbsolute = require('node:path').isAbsolute;
+var statuses = require('statuses')
+var sign = require('cookie-signature').sign;
+var normalizeType = require('./utils').normalizeType;
+var normalizeTypes = require('./utils').normalizeTypes;
+var setCharset = require('./utils').setCharset;
+var cookie = require('cookie');
+var send = require('send');
+var extname = path.extname;
+var resolve = path.resolve;
+var vary = require('vary');
+const { Buffer } = require('node:buffer');
+
+/**
+ * Response prototype.
+ * @public
+ */
+
+var res = Object.create(http.ServerResponse.prototype)
+
+/**
+ * Module exports.
+ * @public
+ */
+
+module.exports = res
+
+/**
+ * Set the HTTP status code for the response.
+ *
+ * Expects an integer value between 100 and 999 inclusive.
+ * Throws an error if the provided status code is not an integer or if it's outside the allowable range.
+ *
+ * @param {number} code - The HTTP status code to set.
+ * @return {ServerResponse} - Returns itself for chaining methods.
+ * @throws {TypeError} If `code` is not an integer.
+ * @throws {RangeError} If `code` is outside the range 100 to 999.
+ * @public
+ */
+
+res.status = function status(code) {
+ // Check if the status code is not an integer
+ if (!Number.isInteger(code)) {
+ throw new TypeError(`Invalid status code: ${JSON.stringify(code)}. Status code must be an integer.`);
+ }
+ // Check if the status code is outside of Node's valid range
+ if (code < 100 || code > 999) {
+ throw new RangeError(`Invalid status code: ${JSON.stringify(code)}. Status code must be greater than 99 and less than 1000.`);
+ }
+
+ this.statusCode = code;
+ return this;
+};
+
+/**
+ * Set Link header field with the given `links`.
+ *
+ * Examples:
+ *
+ * res.links({
+ * next: 'http://api.example.com/users?page=2',
+ * last: 'http://api.example.com/users?page=5',
+ * pages: [
+ * 'http://api.example.com/users?page=1',
+ * 'http://api.example.com/users?page=2'
+ * ]
+ * });
+ *
+ * @param {Object} links
+ * @return {ServerResponse}
+ * @public
+ */
+
+res.links = function(links) {
+ var link = this.get('Link') || '';
+ if (link) link += ', ';
+ return this.set('Link', link + Object.keys(links).map(function(rel) {
+ // Allow multiple links if links[rel] is an array
+ if (Array.isArray(links[rel])) {
+ return links[rel].map(function (singleLink) {
+ return `<${singleLink}>; rel="${rel}"`;
+ }).join(', ');
+ } else {
+ return `<${links[rel]}>; rel="${rel}"`;
+ }
+ }).join(', '));
+};
+
+/**
+ * Send a response.
+ *
+ * Examples:
+ *
+ * res.send(Buffer.from('wahoo'));
+ * res.send({ some: 'json' });
+ * res.send('<p>some html</p>');
+ *
+ * @param {string|number|boolean|object|Buffer} body
+ * @public
+ */
+
+res.send = function send(body) {
+ var chunk = body;
+ var encoding;
+ var req = this.req;
+ var type;
+
+ // settings
+ var app = this.app;
+
+ switch (typeof chunk) {
+ // string defaulting to html
+ case 'string':
+ if (!this.get('Content-Type')) {
+ this.type('html');
+ }
+ break;
+ case 'boolean':
+ case 'number':
+ case 'object':
+ if (chunk === null) {
+ chunk = '';
+ } else if (ArrayBuffer.isView(chunk)) {
+ if (!this.get('Content-Type')) {
+ this.type('bin');
+ }
+ } else {
+ return this.json(chunk);
+ }
+ break;
+ }
+
+ // write strings in utf-8
+ if (typeof chunk === 'string') {
+ encoding = 'utf8';
+ type = this.get('Content-Type');
+
+ // reflect this in content-type
+ if (typeof type === 'string') {
+ this.set('Content-Type', setCharset(type, 'utf-8'));
+ }
+ }
+
+ // determine if ETag should be generated
+ var etagFn = app.get('etag fn')
+ var generateETag = !this.get('ETag') && typeof etagFn === 'function'
+
+ // populate Content-Length
+ var len
+ if (chunk !== undefined) {
+ if (Buffer.isBuffer(chunk)) {
+ // get length of Buffer
+ len = chunk.length
+ } else if (!generateETag && chunk.length < 1000) {
+ // just calculate length when no ETag + small chunk
+ len = Buffer.byteLength(chunk, encoding)
+ } else {
+ // convert chunk to Buffer and calculate
+ chunk = Buffer.from(chunk, encoding)
+ encoding = undefined;
+ len = chunk.length
+ }
+
+ this.set('Content-Length', len);
+ }
+
+ // populate ETag
+ var etag;
+ if (generateETag && len !== undefined) {
+ if ((etag = etagFn(chunk, encoding))) {
+ this.set('ETag', etag);
+ }
+ }
+
+ // freshness
+ if (req.fresh) this.status(304);
+
+ // strip irrelevant headers
+ if (204 === this.statusCode || 304 === this.statusCode) {
+ this.removeHeader('Content-Type');
+ this.removeHeader('Content-Length');
+ this.removeHeader('Transfer-Encoding');
+ chunk = '';
+ }
+
+ // alter headers for 205
+ if (this.statusCode === 205) {
+ this.set('Content-Length', '0')
+ this.removeHeader('Transfer-Encoding')
+ chunk = ''
+ }
+
+ if (req.method === 'HEAD') {
+ // skip body for HEAD
+ this.end();
+ } else {
+ // respond
+ this.end(chunk, encoding);
+ }
+
+ return this;
+};
+
+/**
+ * Send JSON response.
+ *
+ * Examples:
+ *
+ * res.json(null);
+ * res.json({ user: 'tj' });
+ *
+ * @param {string|number|boolean|object} obj
+ * @public
+ */
+
+res.json = function json(obj) {
+ // settings
+ var app = this.app;
+ var escape = app.get('json escape')
+ var replacer = app.get('json replacer');
+ var spaces = app.get('json spaces');
+ var body = stringify(obj, replacer, spaces, escape)
+
+ // content-type
+ if (!this.get('Content-Type')) {
+ this.set('Content-Type', 'application/json');
+ }
+
+ return this.send(body);
+};
+
+/**
+ * Send JSON response with JSONP callback support.
+ *
+ * Examples:
+ *
+ * res.jsonp(null);
+ * res.jsonp({ user: 'tj' });
+ *
+ * @param {string|number|boolean|object} obj
+ * @public
+ */
+
+res.jsonp = function jsonp(obj) {
+ // settings
+ var app = this.app;
+ var escape = app.get('json escape')
+ var replacer = app.get('json replacer');
+ var spaces = app.get('json spaces');
+ var body = stringify(obj, replacer, spaces, escape)
+ var callback = this.req.query[app.get('jsonp callback name')];
+
+ // content-type
+ if (!this.get('Content-Type')) {
+ this.set('X-Content-Type-Options', 'nosniff');
+ this.set('Content-Type', 'application/json');
+ }
+
+ // fixup callback
+ if (Array.isArray(callback)) {
+ callback = callback[0];
+ }
+
+ // jsonp
+ if (typeof callback === 'string' && callback.length !== 0) {
+ this.set('X-Content-Type-Options', 'nosniff');
+ this.set('Content-Type', 'text/javascript');
+
+ // restrict callback charset
+ callback = callback.replace(/[^\[\]\w$.]/g, '');
+
+ if (body === undefined) {
+ // empty argument
+ body = ''
+ } else if (typeof body === 'string') {
+ // replace chars not allowed in JavaScript that are in JSON
+ body = body
+ .replace(/\u2028/g, '\\u2028')
+ .replace(/\u2029/g, '\\u2029')
+ }
+
+ // the /**/ is a specific security mitigation for "Rosetta Flash JSONP abuse"
+ // the typeof check is just to reduce client error noise
+ body = '/**/ typeof ' + callback + ' === \'function\' && ' + callback + '(' + body + ');';
+ }
+
+ return this.send(body);
+};
+
+/**
+ * Send given HTTP status code.
+ *
+ * Sets the response status to `statusCode` and the body of the
+ * response to the standard description from node's http.STATUS_CODES
+ * or the statusCode number if no description.
+ *
+ * Examples:
+ *
+ * res.sendStatus(200);
+ *
+ * @param {number} statusCode
+ * @public
+ */
+
+res.sendStatus = function sendStatus(statusCode) {
+ var body = statuses.message[statusCode] || String(statusCode)
+
+ this.status(statusCode);
+ this.type('txt');
+
+ return this.send(body);
+};
+
+/**
+ * Transfer the file at the given `path`.
+ *
+ * Automatically sets the _Content-Type_ response header field.
+ * The callback `callback(err)` is invoked when the transfer is complete
+ * or when an error occurs. Be sure to check `res.headersSent`
+ * if you wish to attempt responding, as the header and some data
+ * may have already been transferred.
+ *
+ * Options:
+ *
+ * - `maxAge` defaulting to 0 (can be string converted by `ms`)
+ * - `root` root directory for relative filenames
+ * - `headers` object of headers to serve with file
+ * - `dotfiles` serve dotfiles, defaulting to false; can be `"allow"` to send them
+ *
+ * Other options are passed along to `send`.
+ *
+ * Examples:
+ *
+ * The following example illustrates how `res.sendFile()` may
+ * be used as an alternative for the `static()` middleware for
+ * dynamic situations. The code backing `res.sendFile()` is actually
+ * the same code, so HTTP cache support etc is identical.
+ *
+ * app.get('/user/:uid/photos/:file', function(req, res){
+ * var uid = req.params.uid
+ * , file = req.params.file;
+ *
+ * req.user.mayViewFilesFrom(uid, function(yes){
+ * if (yes) {
+ * res.sendFile('/uploads/' + uid + '/' + file);
+ * } else {
+ * res.send(403, 'Sorry! you cant see that.');
+ * }
+ * });
+ * });
+ *
+ * @public
+ */
+
+res.sendFile = function sendFile(path, options, callback) {
+ var done = callback;
+ var req = this.req;
+ var res = this;
+ var next = req.next;
+ var opts = options || {};
+
+ if (!path) {
+ throw new TypeError('path argument is required to res.sendFile');
+ }
+
+ if (typeof path !== 'string') {
+ throw new TypeError('path must be a string to res.sendFile')
+ }
+
+ // support function as second arg
+ if (typeof options === 'function') {
+ done = options;
+ opts = {};
+ }
+
+ if (!opts.root && !pathIsAbsolute(path)) {
+ throw new TypeError('path must be absolute or specify root to res.sendFile');
+ }
+
+ // create file stream
+ var pathname = encodeURI(path);
+
+ // wire application etag option to send
+ opts.etag = this.app.enabled('etag');
+ var file = send(req, pathname, opts);
+
+ // transfer
+ sendfile(res, file, opts, function (err) {
+ if (done) return done(err);
+ if (err && err.code === 'EISDIR') return next();
+
+ // next() all but write errors
+ if (err && err.code !== 'ECONNABORTED' && err.syscall !== 'write') {
+ next(err);
+ }
+ });
+};
+
+/**
+ * Transfer the file at the given `path` as an attachment.
+ *
+ * Optionally providing an alternate attachment `filename`,
+ * and optional callback `callback(err)`. The callback is invoked
+ * when the data transfer is complete, or when an error has
+ * occurred. Be sure to check `res.headersSent` if you plan to respond.
+ *
+ * Optionally providing an `options` object to use with `res.sendFile()`.
+ * This function will set the `Content-Disposition` header, overriding
+ * any `Content-Disposition` header passed as header options in order
+ * to set the attachment and filename.
+ *
+ * This method uses `res.sendFile()`.
+ *
+ * @public
+ */
+
+res.download = function download (path, filename, options, callback) {
+ var done = callback;
+ var name = filename;
+ var opts = options || null
+
+ // support function as second or third arg
+ if (typeof filename === 'function') {
+ done = filename;
+ name = null;
+ opts = null
+ } else if (typeof options === 'function') {
+ done = options
+ opts = null
+ }
+
+ // support optional filename, where options may be in it's place
+ if (typeof filename === 'object' &&
+ (typeof options === 'function' || options === undefined)) {
+ name = null
+ opts = filename
+ }
+
+ // set Content-Disposition when file is sent
+ var headers = {
+ 'Content-Disposition': contentDisposition(name || path)
+ };
+
+ // merge user-provided headers
+ if (opts && opts.headers) {
+ var keys = Object.keys(opts.headers)
+ for (var i = 0; i < keys.length; i++) {
+ var key = keys[i]
+ if (key.toLowerCase() !== 'content-disposition') {
+ headers[key] = opts.headers[key]
+ }
+ }
+ }
+
+ // merge user-provided options
+ opts = Object.create(opts)
+ opts.headers = headers
+
+ // Resolve the full path for sendFile
+ var fullPath = !opts.root
+ ? resolve(path)
+ : path
+
+ // send file
+ return this.sendFile(fullPath, opts, done)
+};
+
+/**
+ * Set _Content-Type_ response header with `type` through `mime.contentType()`
+ * when it does not contain "/", or set the Content-Type to `type` otherwise.
+ * When no mapping is found though `mime.contentType()`, the type is set to
+ * "application/octet-stream".
+ *
+ * Examples:
+ *
+ * res.type('.html');
+ * res.type('html');
+ * res.type('json');
+ * res.type('application/json');
+ * res.type('png');
+ *
+ * @param {String} type
+ * @return {ServerResponse} for chaining
+ * @public
+ */
+
+res.contentType =
+res.type = function contentType(type) {
+ var ct = type.indexOf('/') === -1
+ ? (mime.contentType(type) || 'application/octet-stream')
+ : type;
+
+ return this.set('Content-Type', ct);
+};
+
+/**
+ * Respond to the Acceptable formats using an `obj`
+ * of mime-type callbacks.
+ *
+ * This method uses `req.accepted`, an array of
+ * acceptable types ordered by their quality values.
+ * When "Accept" is not present the _first_ callback
+ * is invoked, otherwise the first match is used. When
+ * no match is performed the server responds with
+ * 406 "Not Acceptable".
+ *
+ * Content-Type is set for you, however if you choose
+ * you may alter this within the callback using `res.type()`
+ * or `res.set('Content-Type', ...)`.
+ *
+ * res.format({
+ * 'text/plain': function(){
+ * res.send('hey');
+ * },
+ *
+ * 'text/html': function(){
+ * res.send('<p>hey</p>');
+ * },
+ *
+ * 'application/json': function () {
+ * res.send({ message: 'hey' });
+ * }
+ * });
+ *
+ * In addition to canonicalized MIME types you may
+ * also use extnames mapped to these types:
+ *
+ * res.format({
+ * text: function(){
+ * res.send('hey');
+ * },
+ *
+ * html: function(){
+ * res.send('<p>hey</p>');
+ * },
+ *
+ * json: function(){
+ * res.send({ message: 'hey' });
+ * }
+ * });
+ *
+ * By default Express passes an `Error`
+ * with a `.status` of 406 to `next(err)`
+ * if a match is not made. If you provide
+ * a `.default` callback it will be invoked
+ * instead.
+ *
+ * @param {Object} obj
+ * @return {ServerResponse} for chaining
+ * @public
+ */
+
+res.format = function(obj){
+ var req = this.req;
+ var next = req.next;
+
+ var keys = Object.keys(obj)
+ .filter(function (v) { return v !== 'default' })
+
+ var key = keys.length > 0
+ ? req.accepts(keys)
+ : false;
+
+ this.vary("Accept");
+
+ if (key) {
+ this.set('Content-Type', normalizeType(key).value);
+ obj[key](req, this, next);
+ } else if (obj.default) {
+ obj.default(req, this, next)
+ } else {
+ next(createError(406, {
+ types: normalizeTypes(keys).map(function (o) { return o.value })
+ }))
+ }
+
+ return this;
+};
+
+/**
+ * Set _Content-Disposition_ header to _attachment_ with optional `filename`.
+ *
+ * @param {String} filename
+ * @return {ServerResponse}
+ * @public
+ */
+
+res.attachment = function attachment(filename) {
+ if (filename) {
+ this.type(extname(filename));
+ }
+
+ this.set('Content-Disposition', contentDisposition(filename));
+
+ return this;
+};
+
+/**
+ * Append additional header `field` with value `val`.
+ *
+ * Example:
+ *
+ * res.append('Link', ['<http://localhost/>', '<http://localhost:3000/>']);
+ * res.append('Set-Cookie', 'foo=bar; Path=/; HttpOnly');
+ * res.append('Warning', '199 Miscellaneous warning');
+ *
+ * @param {String} field
+ * @param {String|Array} val
+ * @return {ServerResponse} for chaining
+ * @public
+ */
+
+res.append = function append(field, val) {
+ var prev = this.get(field);
+ var value = val;
+
+ if (prev) {
+ // concat the new and prev vals
+ value = Array.isArray(prev) ? prev.concat(val)
+ : Array.isArray(val) ? [prev].concat(val)
+ : [prev, val]
+ }
+
+ return this.set(field, value);
+};
+
+/**
+ * Set header `field` to `val`, or pass
+ * an object of header fields.
+ *
+ * Examples:
+ *
+ * res.set('Foo', ['bar', 'baz']);
+ * res.set('Accept', 'application/json');
+ * res.set({ Accept: 'text/plain', 'X-API-Key': 'tobi' });
+ *
+ * Aliased as `res.header()`.
+ *
+ * When the set header is "Content-Type", the type is expanded to include
+ * the charset if not present using `mime.contentType()`.
+ *
+ * @param {String|Object} field
+ * @param {String|Array} val
+ * @return {ServerResponse} for chaining
+ * @public
+ */
+
+res.set =
+res.header = function header(field, val) {
+ if (arguments.length === 2) {
+ var value = Array.isArray(val)
+ ? val.map(String)
+ : String(val);
+
+ // add charset to content-type
+ if (field.toLowerCase() === 'content-type') {
+ if (Array.isArray(value)) {
+ throw new TypeError('Content-Type cannot be set to an Array');
+ }
+ value = mime.contentType(value)
+ }
+
+ this.setHeader(field, value);
+ } else {
+ for (var key in field) {
+ this.set(key, field[key]);
+ }
+ }
+ return this;
+};
+
+/**
+ * Get value for header `field`.
+ *
+ * @param {String} field
+ * @return {String}
+ * @public
+ */
+
+res.get = function(field){
+ return this.getHeader(field);
+};
+
+/**
+ * Clear cookie `name`.
+ *
+ * @param {String} name
+ * @param {Object} [options]
+ * @return {ServerResponse} for chaining
+ * @public
+ */
+
+res.clearCookie = function clearCookie(name, options) {
+ // Force cookie expiration by setting expires to the past
+ const opts = { path: '/', ...options, expires: new Date(1)};
+ // ensure maxAge is not passed
+ delete opts.maxAge
+
+ return this.cookie(name, '', opts);
+};
+
+/**
+ * Set cookie `name` to `value`, with the given `options`.
+ *
+ * Options:
+ *
+ * - `maxAge` max-age in milliseconds, converted to `expires`
+ * - `signed` sign the cookie
+ * - `path` defaults to "/"
+ *
+ * Examples:
+ *
+ * // "Remember Me" for 15 minutes
+ * res.cookie('rememberme', '1', { expires: new Date(Date.now() + 900000), httpOnly: true });
+ *
+ * // same as above
+ * res.cookie('rememberme', '1', { maxAge: 900000, httpOnly: true })
+ *
+ * @param {String} name
+ * @param {String|Object} value
+ * @param {Object} [options]
+ * @return {ServerResponse} for chaining
+ * @public
+ */
+
+res.cookie = function (name, value, options) {
+ var opts = { ...options };
+ var secret = this.req.secret;
+ var signed = opts.signed;
+
+ if (signed && !secret) {
+ throw new Error('cookieParser("secret") required for signed cookies');
+ }
+
+ var val = typeof value === 'object'
+ ? 'j:' + JSON.stringify(value)
+ : String(value);
+
+ if (signed) {
+ val = 's:' + sign(val, secret);
+ }
+
+ if (opts.maxAge != null) {
+ var maxAge = opts.maxAge - 0
+
+ if (!isNaN(maxAge)) {
+ opts.expires = new Date(Date.now() + maxAge)
+ opts.maxAge = Math.floor(maxAge / 1000)
+ }
+ }
+
+ if (opts.path == null) {
+ opts.path = '/';
+ }
+
+ this.append('Set-Cookie', cookie.serialize(name, String(val), opts));
+
+ return this;
+};
+
+/**
+ * Set the location header to `url`.
+ *
+ * The given `url` can also be "back", which redirects
+ * to the _Referrer_ or _Referer_ headers or "/".
+ *
+ * Examples:
+ *
+ * res.location('/foo/bar').;
+ * res.location('http://example.com');
+ * res.location('../login');
+ *
+ * @param {String} url
+ * @return {ServerResponse} for chaining
+ * @public
+ */
+
+res.location = function location(url) {
+ return this.set('Location', encodeUrl(url));
+};
+
+/**
+ * Redirect to the given `url` with optional response `status`
+ * defaulting to 302.
+ *
+ * Examples:
+ *
+ * res.redirect('/foo/bar');
+ * res.redirect('http://example.com');
+ * res.redirect(301, 'http://example.com');
+ * res.redirect('../login'); // /blog/post/1 -> /blog/login
+ *
+ * @public
+ */
+
+res.redirect = function redirect(url) {
+ var address = url;
+ var body;
+ var status = 302;
+
+ // allow status / url
+ if (arguments.length === 2) {
+ status = arguments[0]
+ address = arguments[1]
+ }
+
+ if (!address) {
+ deprecate('Provide a url argument');
+ }
+
+ if (typeof address !== 'string') {
+ deprecate('Url must be a string');
+ }
+
+ if (typeof status !== 'number') {
+ deprecate('Status must be a number');
+ }
+
+ // Set location header
+ address = this.location(address).get('Location');
+
+ // Support text/{plain,html} by default
+ this.format({
+ text: function(){
+ body = statuses.message[status] + '. Redirecting to ' + address
+ },
+
+ html: function(){
+ var u = escapeHtml(address);
+ body = '<p>' + statuses.message[status] + '. Redirecting to ' + u + '</p>'
+ },
+
+ default: function(){
+ body = '';
+ }
+ });
+
+ // Respond
+ this.status(status);
+ this.set('Content-Length', Buffer.byteLength(body));
+
+ if (this.req.method === 'HEAD') {
+ this.end();
+ } else {
+ this.end(body);
+ }
+};
+
+/**
+ * Add `field` to Vary. If already present in the Vary set, then
+ * this call is simply ignored.
+ *
+ * @param {Array|String} field
+ * @return {ServerResponse} for chaining
+ * @public
+ */
+
+res.vary = function(field){
+ vary(this, field);
+
+ return this;
+};
+
+/**
+ * Render `view` with the given `options` and optional callback `fn`.
+ * When a callback function is given a response will _not_ be made
+ * automatically, otherwise a response of _200_ and _text/html_ is given.
+ *
+ * Options:
+ *
+ * - `cache` boolean hinting to the engine it should cache
+ * - `filename` filename of the view being rendered
+ *
+ * @public
+ */
+
+res.render = function render(view, options, callback) {
+ var app = this.req.app;
+ var done = callback;
+ var opts = options || {};
+ var req = this.req;
+ var self = this;
+
+ // support callback function as second arg
+ if (typeof options === 'function') {
+ done = options;
+ opts = {};
+ }
+
+ // merge res.locals
+ opts._locals = self.locals;
+
+ // default callback to respond
+ done = done || function (err, str) {
+ if (err) return req.next(err);
+ self.send(str);
+ };
+
+ // render
+ app.render(view, opts, done);
+};
+
+// pipe the send file stream
+function sendfile(res, file, options, callback) {
+ var done = false;
+ var streaming;
+
+ // request aborted
+ function onaborted() {
+ if (done) return;
+ done = true;
+
+ var err = new Error('Request aborted');
+ err.code = 'ECONNABORTED';
+ callback(err);
+ }
+
+ // directory
+ function ondirectory() {
+ if (done) return;
+ done = true;
+
+ var err = new Error('EISDIR, read');
+ err.code = 'EISDIR';
+ callback(err);
+ }
+
+ // errors
+ function onerror(err) {
+ if (done) return;
+ done = true;
+ callback(err);
+ }
+
+ // ended
+ function onend() {
+ if (done) return;
+ done = true;
+ callback();
+ }
+
+ // file
+ function onfile() {
+ streaming = false;
+ }
+
+ // finished
+ function onfinish(err) {
+ if (err && err.code === 'ECONNRESET') return onaborted();
+ if (err) return onerror(err);
+ if (done) return;
+
+ setImmediate(function () {
+ if (streaming !== false && !done) {
+ onaborted();
+ return;
+ }
+
+ if (done) return;
+ done = true;
+ callback();
+ });
+ }
+
+ // streaming
+ function onstream() {
+ streaming = true;
+ }
+
+ file.on('directory', ondirectory);
+ file.on('end', onend);
+ file.on('error', onerror);
+ file.on('file', onfile);
+ file.on('stream', onstream);
+ onFinished(res, onfinish);
+
+ if (options.headers) {
+ // set headers on successful transfer
+ file.on('headers', function headers(res) {
+ var obj = options.headers;
+ var keys = Object.keys(obj);
+
+ for (var i = 0; i < keys.length; i++) {
+ var k = keys[i];
+ res.setHeader(k, obj[k]);
+ }
+ });
+ }
+
+ // pipe
+ file.pipe(res);
+}
+
+/**
+ * Stringify JSON, like JSON.stringify, but v8 optimized, with the
+ * ability to escape characters that can trigger HTML sniffing.
+ *
+ * @param {*} value
+ * @param {function} replacer
+ * @param {number} spaces
+ * @param {boolean} escape
+ * @returns {string}
+ * @private
+ */
+
+function stringify (value, replacer, spaces, escape) {
+ // v8 checks arguments.length for optimizing simple call
+ // https://bugs.chromium.org/p/v8/issues/detail?id=4730
+ var json = replacer || spaces
+ ? JSON.stringify(value, replacer, spaces)
+ : JSON.stringify(value);
+
+ if (escape && typeof json === 'string') {
+ json = json.replace(/[<>&]/g, function (c) {
+ switch (c.charCodeAt(0)) {
+ case 0x3c:
+ return '\\u003c'
+ case 0x3e:
+ return '\\u003e'
+ case 0x26:
+ return '\\u0026'
+ /* istanbul ignore next: unreachable default */
+ default:
+ return c
+ }
+ })
+ }
+
+ return json
+}
diff --git a/node_modules/express/lib/utils.js b/node_modules/express/lib/utils.js
new file mode 100644
index 0000000..4f21e7e
--- /dev/null
+++ b/node_modules/express/lib/utils.js
@@ -0,0 +1,271 @@
+/*!
+ * express
+ * Copyright(c) 2009-2013 TJ Holowaychuk
+ * Copyright(c) 2014-2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict';
+
+/**
+ * Module dependencies.
+ * @api private
+ */
+
+var { METHODS } = require('node:http');
+var contentType = require('content-type');
+var etag = require('etag');
+var mime = require('mime-types')
+var proxyaddr = require('proxy-addr');
+var qs = require('qs');
+var querystring = require('node:querystring');
+const { Buffer } = require('node:buffer');
+
+
+/**
+ * A list of lowercased HTTP methods that are supported by Node.js.
+ * @api private
+ */
+exports.methods = METHODS.map((method) => method.toLowerCase());
+
+/**
+ * Return strong ETag for `body`.
+ *
+ * @param {String|Buffer} body
+ * @param {String} [encoding]
+ * @return {String}
+ * @api private
+ */
+
+exports.etag = createETagGenerator({ weak: false })
+
+/**
+ * Return weak ETag for `body`.
+ *
+ * @param {String|Buffer} body
+ * @param {String} [encoding]
+ * @return {String}
+ * @api private
+ */
+
+exports.wetag = createETagGenerator({ weak: true })
+
+/**
+ * Normalize the given `type`, for example "html" becomes "text/html".
+ *
+ * @param {String} type
+ * @return {Object}
+ * @api private
+ */
+
+exports.normalizeType = function(type){
+ return ~type.indexOf('/')
+ ? acceptParams(type)
+ : { value: (mime.lookup(type) || 'application/octet-stream'), params: {} }
+};
+
+/**
+ * Normalize `types`, for example "html" becomes "text/html".
+ *
+ * @param {Array} types
+ * @return {Array}
+ * @api private
+ */
+
+exports.normalizeTypes = function(types) {
+ return types.map(exports.normalizeType);
+};
+
+
+/**
+ * Parse accept params `str` returning an
+ * object with `.value`, `.quality` and `.params`.
+ *
+ * @param {String} str
+ * @return {Object}
+ * @api private
+ */
+
+function acceptParams (str) {
+ var length = str.length;
+ var colonIndex = str.indexOf(';');
+ var index = colonIndex === -1 ? length : colonIndex;
+ var ret = { value: str.slice(0, index).trim(), quality: 1, params: {} };
+
+ while (index < length) {
+ var splitIndex = str.indexOf('=', index);
+ if (splitIndex === -1) break;
+
+ var colonIndex = str.indexOf(';', index);
+ var endIndex = colonIndex === -1 ? length : colonIndex;
+
+ if (splitIndex > endIndex) {
+ index = str.lastIndexOf(';', splitIndex - 1) + 1;
+ continue;
+ }
+
+ var key = str.slice(index, splitIndex).trim();
+ var value = str.slice(splitIndex + 1, endIndex).trim();
+
+ if (key === 'q') {
+ ret.quality = parseFloat(value);
+ } else {
+ ret.params[key] = value;
+ }
+
+ index = endIndex + 1;
+ }
+
+ return ret;
+}
+
+/**
+ * Compile "etag" value to function.
+ *
+ * @param {Boolean|String|Function} val
+ * @return {Function}
+ * @api private
+ */
+
+exports.compileETag = function(val) {
+ var fn;
+
+ if (typeof val === 'function') {
+ return val;
+ }
+
+ switch (val) {
+ case true:
+ case 'weak':
+ fn = exports.wetag;
+ break;
+ case false:
+ break;
+ case 'strong':
+ fn = exports.etag;
+ break;
+ default:
+ throw new TypeError('unknown value for etag function: ' + val);
+ }
+
+ return fn;
+}
+
+/**
+ * Compile "query parser" value to function.
+ *
+ * @param {String|Function} val
+ * @return {Function}
+ * @api private
+ */
+
+exports.compileQueryParser = function compileQueryParser(val) {
+ var fn;
+
+ if (typeof val === 'function') {
+ return val;
+ }
+
+ switch (val) {
+ case true:
+ case 'simple':
+ fn = querystring.parse;
+ break;
+ case false:
+ break;
+ case 'extended':
+ fn = parseExtendedQueryString;
+ break;
+ default:
+ throw new TypeError('unknown value for query parser function: ' + val);
+ }
+
+ return fn;
+}
+
+/**
+ * Compile "proxy trust" value to function.
+ *
+ * @param {Boolean|String|Number|Array|Function} val
+ * @return {Function}
+ * @api private
+ */
+
+exports.compileTrust = function(val) {
+ if (typeof val === 'function') return val;
+
+ if (val === true) {
+ // Support plain true/false
+ return function(){ return true };
+ }
+
+ if (typeof val === 'number') {
+ // Support trusting hop count
+ return function(a, i){ return i < val };
+ }
+
+ if (typeof val === 'string') {
+ // Support comma-separated values
+ val = val.split(',')
+ .map(function (v) { return v.trim() })
+ }
+
+ return proxyaddr.compile(val || []);
+}
+
+/**
+ * Set the charset in a given Content-Type string.
+ *
+ * @param {String} type
+ * @param {String} charset
+ * @return {String}
+ * @api private
+ */
+
+exports.setCharset = function setCharset(type, charset) {
+ if (!type || !charset) {
+ return type;
+ }
+
+ // parse type
+ var parsed = contentType.parse(type);
+
+ // set charset
+ parsed.parameters.charset = charset;
+
+ // format type
+ return contentType.format(parsed);
+};
+
+/**
+ * Create an ETag generator function, generating ETags with
+ * the given options.
+ *
+ * @param {object} options
+ * @return {function}
+ * @private
+ */
+
+function createETagGenerator (options) {
+ return function generateETag (body, encoding) {
+ var buf = !Buffer.isBuffer(body)
+ ? Buffer.from(body, encoding)
+ : body
+
+ return etag(buf, options)
+ }
+}
+
+/**
+ * Parse an extended query string with qs.
+ *
+ * @param {String} str
+ * @return {Object}
+ * @private
+ */
+
+function parseExtendedQueryString(str) {
+ return qs.parse(str, {
+ allowPrototypes: true
+ });
+}
diff --git a/node_modules/express/lib/view.js b/node_modules/express/lib/view.js
new file mode 100644
index 0000000..d66b4a2
--- /dev/null
+++ b/node_modules/express/lib/view.js
@@ -0,0 +1,205 @@
+/*!
+ * express
+ * Copyright(c) 2009-2013 TJ Holowaychuk
+ * Copyright(c) 2013 Roman Shtylman
+ * Copyright(c) 2014-2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict';
+
+/**
+ * Module dependencies.
+ * @private
+ */
+
+var debug = require('debug')('express:view');
+var path = require('node:path');
+var fs = require('node:fs');
+
+/**
+ * Module variables.
+ * @private
+ */
+
+var dirname = path.dirname;
+var basename = path.basename;
+var extname = path.extname;
+var join = path.join;
+var resolve = path.resolve;
+
+/**
+ * Module exports.
+ * @public
+ */
+
+module.exports = View;
+
+/**
+ * Initialize a new `View` with the given `name`.
+ *
+ * Options:
+ *
+ * - `defaultEngine` the default template engine name
+ * - `engines` template engine require() cache
+ * - `root` root path for view lookup
+ *
+ * @param {string} name
+ * @param {object} options
+ * @public
+ */
+
+function View(name, options) {
+ var opts = options || {};
+
+ this.defaultEngine = opts.defaultEngine;
+ this.ext = extname(name);
+ this.name = name;
+ this.root = opts.root;
+
+ if (!this.ext && !this.defaultEngine) {
+ throw new Error('No default engine was specified and no extension was provided.');
+ }
+
+ var fileName = name;
+
+ if (!this.ext) {
+ // get extension from default engine name
+ this.ext = this.defaultEngine[0] !== '.'
+ ? '.' + this.defaultEngine
+ : this.defaultEngine;
+
+ fileName += this.ext;
+ }
+
+ if (!opts.engines[this.ext]) {
+ // load engine
+ var mod = this.ext.slice(1)
+ debug('require "%s"', mod)
+
+ // default engine export
+ var fn = require(mod).__express
+
+ if (typeof fn !== 'function') {
+ throw new Error('Module "' + mod + '" does not provide a view engine.')
+ }
+
+ opts.engines[this.ext] = fn
+ }
+
+ // store loaded engine
+ this.engine = opts.engines[this.ext];
+
+ // lookup path
+ this.path = this.lookup(fileName);
+}
+
+/**
+ * Lookup view by the given `name`
+ *
+ * @param {string} name
+ * @private
+ */
+
+View.prototype.lookup = function lookup(name) {
+ var path;
+ var roots = [].concat(this.root);
+
+ debug('lookup "%s"', name);
+
+ for (var i = 0; i < roots.length && !path; i++) {
+ var root = roots[i];
+
+ // resolve the path
+ var loc = resolve(root, name);
+ var dir = dirname(loc);
+ var file = basename(loc);
+
+ // resolve the file
+ path = this.resolve(dir, file);
+ }
+
+ return path;
+};
+
+/**
+ * Render with the given options.
+ *
+ * @param {object} options
+ * @param {function} callback
+ * @private
+ */
+
+View.prototype.render = function render(options, callback) {
+ var sync = true;
+
+ debug('render "%s"', this.path);
+
+ // render, normalizing sync callbacks
+ this.engine(this.path, options, function onRender() {
+ if (!sync) {
+ return callback.apply(this, arguments);
+ }
+
+ // copy arguments
+ var args = new Array(arguments.length);
+ var cntx = this;
+
+ for (var i = 0; i < arguments.length; i++) {
+ args[i] = arguments[i];
+ }
+
+ // force callback to be async
+ return process.nextTick(function renderTick() {
+ return callback.apply(cntx, args);
+ });
+ });
+
+ sync = false;
+};
+
+/**
+ * Resolve the file within the given directory.
+ *
+ * @param {string} dir
+ * @param {string} file
+ * @private
+ */
+
+View.prototype.resolve = function resolve(dir, file) {
+ var ext = this.ext;
+
+ // <path>.<ext>
+ var path = join(dir, file);
+ var stat = tryStat(path);
+
+ if (stat && stat.isFile()) {
+ return path;
+ }
+
+ // <path>/index.<ext>
+ path = join(dir, basename(file, ext), 'index' + ext);
+ stat = tryStat(path);
+
+ if (stat && stat.isFile()) {
+ return path;
+ }
+};
+
+/**
+ * Return a stat, maybe.
+ *
+ * @param {string} path
+ * @return {fs.Stats}
+ * @private
+ */
+
+function tryStat(path) {
+ debug('stat "%s"', path);
+
+ try {
+ return fs.statSync(path);
+ } catch (e) {
+ return undefined;
+ }
+}