Remove preMiddleware.

Not necessary since this can easily be done with an app.use() before
calling loopback-explorer.

README.md

@@ -30,12 +30,10 @@ Many aspects of the explorer are configurable.
 See [options](#options) for a description of these options:
 
 ```js
+// Mount middleware before calling `explorer()` to add custom headers, auth, etc.
+app.use('/explorer', loopback.basicAuth('user', 'password'));
 app.use('/explorer', explorer(app, {
   basePath: '/custom-api-root',
-  preMiddleware: [
-    // You can add as many items to this middleware chain as you like
-    loopback.basicAuth(bitmex.settings.basicAuth.user, bitmex.settings.basicAuth.password)
-  ],
   swaggerDistRoot: '/swagger',
   apiInfo: {
     'title': 'My API',
@@ -59,7 +57,6 @@ Options are passed to `explorer(app, options)`.
 > to a path different than '/api', e.g. with
 > `loopback.use('/custom-api-root', loopback.rest());
 
-
 `swaggerDistRoot`: **String** 
 
 > Sets a path within your application for overriding Swagger UI files.
@@ -89,9 +86,3 @@ Options are passed to `explorer(app, options)`.
 > Default: Read from package.json
 
 > Sets your API version. If not present, will read from your app's package.json.
-
-`preMiddleware`: **Array<Function>|Function**
-
-> Middleware to run before any explorer routes, including static routes.
-
-> Useful for setting HTTP Auth, modifying the `Host` header, and so on.

index.js

@@ -23,21 +23,13 @@ module.exports = explorer;
 function explorer(loopbackApplication, options) {
   options = _defaults({}, options, {
     resourcePath: 'resources',
-    apiInfo: loopbackApplication.get('apiInfo') || {},
-    preMiddleware: []
+    apiInfo: loopbackApplication.get('apiInfo') || {}
   });
 
   var app = express();
 
   swagger(loopbackApplication, app, options);
 
-  // Allow the user to attach middleware that will run before any
-  // explorer routes, e.g. for access control.
-  if (typeof options.preMiddleware === 'function' || 
-      (Array.isArray(options.preMiddleware) && options.preMiddleware.length)) {
-    app.use(options.preMiddleware);
-  }
-
   app.disable('x-powered-by');
 
   // config.json is loaded by swagger-ui. The server should respond