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node_modules/connect-history-api-fallback/LICENSE

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+The MIT License
+
+Copyright (c) 2022 Ben Blackmore and contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.

node_modules/connect-history-api-fallback/README.md

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+<h1 align="center">connect-history-api-fallback</h1>
+<p align="center">Middleware to proxy requests through a specified index page, useful for Single Page Applications that utilise the HTML5 History API.</p>
+
+<h2>Table of Contents</h2>
+
+<!-- TOC depthFrom:2 depthTo:6 withLinks:1 updateOnSave:1 orderedList:0 -->
+
+- [Introduction](#introduction)
+- [Usage](#usage)
+- [Options](#options)
+	- [index](#index)
+	- [rewrites](#rewrites)
+	- [verbose](#verbose)
+	- [htmlAcceptHeaders](#htmlacceptheaders)
+	- [disableDotRule](#disabledotrule)
+
+<!-- /TOC -->
+
+## Introduction
+
+Single Page Applications (SPA) typically only utilise one index file that is
+accessible by web browsers: usually `index.html`. Navigation in the application
+is then commonly handled using JavaScript with the help of the
+[HTML5 History API](http://www.w3.org/html/wg/drafts/html/master/single-page.html#the-history-interface).
+This results in issues when the user hits the refresh button or is directly
+accessing a page other than the landing page, e.g. `/help` or `/help/online`
+as the web server bypasses the index file to locate the file at this location.
+As your application is a SPA, the web server will fail trying to retrieve the file and return a *404 - Not Found*
+message to the user.
+
+This tiny middleware addresses some of the issues. Specifically, it will change
+the requested location to the index you specify (default being `/index.html`)
+whenever there is a request which fulfills the following criteria:
+
+ 1. The request is a `GET` or `HEAD` request
+ 2. which accepts `text/html`,
+ 3. is not a direct file request, i.e. the requested path does not contain a
+    `.` (DOT) character and
+ 4. does not match a pattern provided in options.rewrites (see options below)
+
+## Usage
+
+The middleware is available through NPM and can easily be added.
+
+```
+npm install --save connect-history-api-fallback
+```
+
+Import the library
+
+```javascript
+var history = require('connect-history-api-fallback');
+```
+
+Now you only need to add the middleware to your application like so
+
+```javascript
+var connect = require('connect');
+
+var app = connect()
+  .use(history())
+  .listen(3000);
+```
+
+Of course you can also use this piece of middleware with express:
+
+```javascript
+var express = require('express');
+
+var app = express();
+app.use(history());
+```
+
+## Options
+You can optionally pass options to the library when obtaining the middleware
+
+```javascript
+var middleware = history({});
+```
+
+### index
+Override the index (default `/index.html`). This is the request path that will be used when the middleware identifies that the request path needs to be rewritten.
+
+This is not the path to a file on disk. Instead it is the HTTP request path. Downstream connect/express middleware is responsible to turn this rewritten HTTP request path into actual responses, e.g. by reading a file from disk.
+
+```javascript
+history({
+  index: '/default.html'
+});
+```
+
+### rewrites
+Override the index when the request url matches a regex pattern. You can either rewrite to a static string or use a function to transform the incoming request.
+
+The following will rewrite a request that matches the `/\/soccer/` pattern to `/soccer.html`.
+```javascript
+history({
+  rewrites: [
+    { from: /\/soccer/, to: '/soccer.html'}
+  ]
+});
+```
+
+Alternatively functions can be used to have more control over the rewrite process. For instance, the following listing shows how requests to `/libs/jquery/jquery.1.12.0.min.js` and the like can be routed to `./bower_components/libs/jquery/jquery.1.12.0.min.js`. You can also make use of this if you have an API version in the URL path.
+```javascript
+history({
+  rewrites: [
+    {
+      from: /^\/libs\/.*$/,
+      to: function(context) {
+        return '/bower_components' + context.parsedUrl.pathname;
+      }
+    }
+  ]
+});
+```
+
+The function will always be called with a context object that has the following properties:
+
+ - **parsedUrl**: Information about the URL as provided by the [URL module's](https://nodejs.org/api/url.html#url_url_parse_urlstr_parsequerystring_slashesdenotehost) `url.parse`.
+ - **match**: An Array of matched results as provided by `String.match(...)`.
+ - **request**: The HTTP request object.
+
+
+### verbose
+This middleware does not log any information by default. If you wish to activate logging, then you can do so via the `verbose` option or by specifying a logger function.
+
+```javascript
+history({
+  verbose: true
+});
+```
+
+Alternatively use your own logger
+
+```javascript
+history({
+  logger: console.log.bind(console)
+});
+```
+
+### htmlAcceptHeaders
+Override the default `Accepts:` headers that are queried when matching HTML content requests (Default: `['text/html', '*/*']`).
+
+```javascript
+history({
+  htmlAcceptHeaders: ['text/html', 'application/xhtml+xml']
+})
+```
+
+### disableDotRule
+Disables the dot rule mentioned above:
+
+> […] is not a direct file request, i.e. the requested path does not contain a `.` (DOT) character […]
+
+```javascript
+history({
+  disableDotRule: true
+})
+```

node_modules/connect-history-api-fallback/lib/index.js

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+'use strict';
+
+var url = require('url');
+
+exports = module.exports = function historyApiFallback(options) {
+  options = options || {};
+  var logger = getLogger(options);
+
+  return function(req, res, next) {
+    var headers = req.headers;
+    if (req.method !== 'GET' && req.method !== 'HEAD') {
+      logger(
+        'Not rewriting',
+        req.method,
+        req.url,
+        'because the method is not GET or HEAD.'
+      );
+      return next();
+    } else if (!headers || typeof headers.accept !== 'string') {
+      logger(
+        'Not rewriting',
+        req.method,
+        req.url,
+        'because the client did not send an HTTP accept header.'
+      );
+      return next();
+    } else if (headers.accept.indexOf('application/json') === 0) {
+      logger(
+        'Not rewriting',
+        req.method,
+        req.url,
+        'because the client prefers JSON.'
+      );
+      return next();
+    } else if (!acceptsHtml(headers.accept, options)) {
+      logger(
+        'Not rewriting',
+        req.method,
+        req.url,
+        'because the client does not accept HTML.'
+      );
+      return next();
+    }
+
+    var parsedUrl = url.parse(req.url);
+    var rewriteTarget;
+    options.rewrites = options.rewrites || [];
+    for (var i = 0; i < options.rewrites.length; i++) {
+      var rewrite = options.rewrites[i];
+      var match = parsedUrl.pathname.match(rewrite.from);
+      if (match !== null) {
+        rewriteTarget = evaluateRewriteRule(parsedUrl, match, rewrite.to, req);
+
+        if(rewriteTarget.charAt(0) !== '/') {
+          logger(
+            'We recommend using an absolute path for the rewrite target.',
+            'Received a non-absolute rewrite target',
+            rewriteTarget,
+            'for URL',
+            req.url
+          );
+        }
+
+        logger('Rewriting', req.method, req.url, 'to', rewriteTarget);
+        req.url = rewriteTarget;
+        return next();
+      }
+    }
+
+    var pathname = parsedUrl.pathname;
+    if (pathname.lastIndexOf('.') > pathname.lastIndexOf('/') &&
+        options.disableDotRule !== true) {
+      logger(
+        'Not rewriting',
+        req.method,
+        req.url,
+        'because the path includes a dot (.) character.'
+      );
+      return next();
+    }
+
+    rewriteTarget = options.index || '/index.html';
+    logger('Rewriting', req.method, req.url, 'to', rewriteTarget);
+    req.url = rewriteTarget;
+    next();
+  };
+};
+
+function evaluateRewriteRule(parsedUrl, match, rule, req) {
+  if (typeof rule === 'string') {
+    return rule;
+  } else if (typeof rule !== 'function') {
+    throw new Error('Rewrite rule can only be of type string or function.');
+  }
+
+  return rule({
+    parsedUrl: parsedUrl,
+    match: match,
+    request: req
+  });
+}
+
+function acceptsHtml(header, options) {
+  options.htmlAcceptHeaders = options.htmlAcceptHeaders || ['text/html', '*/*'];
+  for (var i = 0; i < options.htmlAcceptHeaders.length; i++) {
+    if (header.indexOf(options.htmlAcceptHeaders[i]) !== -1) {
+      return true;
+    }
+  }
+  return false;
+}
+
+function getLogger(options) {
+  if (options && options.logger) {
+    return options.logger;
+  } else if (options && options.verbose) {
+    // eslint-disable-next-line no-console
+    return console.log.bind(console);
+  }
+  return function(){};
+}

node_modules/connect-history-api-fallback/package.json

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+{
+  "name": "connect-history-api-fallback",
+  "version": "2.0.0",
+  "description": "Provides a fallback for non-existing directories so that the HTML 5 history API can be used.",
+  "keyswords": [
+    "connect",
+    "express",
+    "html5",
+    "history api",
+    "fallback",
+    "spa"
+  ],
+  "engines": {
+    "node": ">=0.8"
+  },
+  "main": "lib/index.js",
+  "files": [
+    "lib"
+  ],
+  "scripts": {
+    "test": "jest && eslint lib/*.js test/*.js"
+  },
+  "repository": {
+    "type": "git",
+    "url": "http://github.com/bripkens/connect-history-api-fallback.git"
+  },
+  "author": {
+    "name": "Ben Ripkens",
+    "email": "bripkens@gmail.com"
+  },
+  "contributors": [
+    "Craig Myles <cr@igmyles.com> (http://www.craigmyles.com)"
+  ],
+  "license": "MIT",
+  "devDependencies": {
+    "eslint": "^5.16.0",
+    "jest": "^24.8.0",
+    "sinon": "^7.3.2"
+  }
+}