Trying to run cors-anywhere locally

server/node_modules/cors-anywhere/README.md

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+**CORS Anywhere** is a NodeJS proxy which adds CORS headers to the proxied request.
+
+The url to proxy is literally taken from the path, validated and proxied. The protocol
+part of the proxied URI is optional, and defaults to "http". If port 443 is specified,
+the protocol defaults to "https".
+
+This package does not put any restrictions on the http methods or headers, except for
+cookies. Requesting [user credentials](http://www.w3.org/TR/cors/#user-credentials) is disallowed.
+The app can be configured to require a header for proxying a request, for example to avoid
+a direct visit from the browser.
+
+The package also includes a Procfile, to run the app on Heroku. More information about
+Heroku can be found at https://devcenter.heroku.com/articles/nodejs.
+
+## Example
+
+```javascript
+// Heroku defines the environment variable PORT, and requires the binding address to be 0.0.0.0
+var host = process.env.PORT ? '0.0.0.0' : '127.0.0.1';
+var port = process.env.PORT || 8080;
+
+var cors_proxy = require('cors-anywhere');
+cors_proxy.createServer({
+    requireHeader: ['origin', 'x-requested-with'],
+    removeHeaders: ['cookie', 'cookie2']
+}).listen(port, host, function() {
+    console.log('Running CORS Anywhere on ' + host + ':' + port);
+});
+
+```
+Request examples:
+
+* `http://localhost:8080/http://google.com/` - Google.com with CORS headers
+* `http://localhost:8080/google.com` - Same as previous.
+* `http://localhost:8080/google.com:443` - Proxies `https://google.com/`
+* `http://localhost:8080/` - Shows usage text, as defined in `libs/help.txt`
+* `http://localhost:8080/favicon.ico` - Replies 404 Not found
+
+Live examples:
+
+* https://cors-anywhere.herokuapp.com/
+* https://robwu.nl/cors-anywhere.html - This demo shows how to use the API.
+
+## Documentation
+
+### Client
+
+To use the API, just prefix the URL with the API URL. Take a look at [demo.html](demo.html) for an example.
+A concise summary of the documentation is provided at [lib/help.txt](lib/help.txt).
+
+If you want to automatically enable cross-domain requests when needed, use the following snippet:
+
+```javascript
+(function() {
+    var cors_api_host = 'cors-anywhere.herokuapp.com';
+    var cors_api_url = 'https://' + cors_api_host + '/';
+    var slice = [].slice;
+    var origin = window.location.protocol + '//' + window.location.host;
+    var open = XMLHttpRequest.prototype.open;
+    XMLHttpRequest.prototype.open = function() {
+        var args = slice.call(arguments);
+        var targetOrigin = /^https?:\/\/([^\/]+)/i.exec(args[1]);
+        if (targetOrigin && targetOrigin[0].toLowerCase() !== origin &&
+            targetOrigin[1] !== cors_api_host) {
+            args[1] = cors_api_url + args[1];
+        }
+        return open.apply(this, args);
+    };
+})();
+```
+
+If you're using jQuery, you can also use the following code **instead of** the previous one:
+
+```javascript
+jQuery.ajaxPrefilter(function(options) {
+    if (options.crossDomain && jQuery.support.cors) {
+        options.url = 'https://cors-anywhere.herokuapp.com/' + options.url;
+    }
+});
+```
+
+### Server
+
+The module exports two properties: `getHandler` and `createServer`.
+
+* `getHandler(options)` returns a handler which implements the routing logic.
+  This handler is used by [http-proxy](https://github.com/nodejitsu/node-http-proxy).
+* `createServer(options)` creates a server with the default handler.
+
+The following options are recognized by both methods:
+
+* array of strings `requireHeader` - If set, the request must include this header or the API will refuse to proxy.  
+  Recommended if you want to prevent users from using the proxy for normal browsing.  
+  Example: `['Origin', 'X-Requested-With']`.
+* array of lowercase strings `removeHeaders` - Exclude certain headers from being included in the request.  
+  Example: `["cookie"]`
+
+`createServer` recognizes the following option as well:
+
+* `httpProxyOptions` - Options for http-proxy. The documentation for these options can be found [here](https://github.com/nodejitsu/node-http-proxy#options).
+* `httpsOptions` - If set, a `https.Server` will be created. The given options are passed to the
+  [`https.createServer`](https://nodejs.org/api/https.html#https_https_createserver_options_requestlistener) method.
+
+
+## Dependencies
+
+- NodeJitsu's [http-proxy](https://github.com/nodejitsu/node-http-proxy)
+
+
+## License
+
+Copyright (C) 2013 - 2015 Rob Wu <rob@robwu.nl>
+
+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.