Merge pull request #6116 from bdoss/typeahead

Additions to definitions for Twitter Typeahead.

typeahead/typeahead.d.ts

@@ -316,6 +316,19 @@ declare module Bloodhound
     * The ajax settings object passed to jQuery.ajax.
     */
     ajax?: JQueryAjaxSettings;
+    
+    /**
+     * A function that provides a hook to allow you to prepare the settings object passed to transport
+     * when a request is about to be made. The function signature should be prepare(query, settings),
+     * where query is the query #search was called with and settings is the default settings object 
+     * created internally by the Bloodhound instance. The prepare function should return a settings object.
+     * [Note: Added in 0.11.1]
+     * 
+     * @param query The query #search was called with.
+     * @param settings The default settings object created internally by Bloodhound.
+     * @returns A JqueryAjaxSettings object.
+     */
+    prepare?: (query: string, settings: JQueryAjaxSettings) => JQueryAjaxSettings;
   }
 
   /**
@@ -411,3 +424,7 @@ declare class Bloodhound<T> {
   */
   public static tokenizers: Bloodhound.Tokenizers;
 }
+
+declare module "bloodhound" {
+  export = Bloodhound;
+}