Support for helper functions

.github/CODEOWNERS

@@ -3379,7 +3379,7 @@
 /types/shopify-buy/                             @openminder
 /types/shortid/                                 @stpettersens @despairblue
 /types/shot/                                    @AJamesPhillips
-/types/showdown/                                @cbowdon @tan9
+/types/showdown/                                @cbowdon @tan9 @arielsaldana
 /types/shrink-ray/                              @forabi
 /types/siema/                                   @Irmiz @0x6368656174 @samnau
 /types/siesta/                                  @bquarmby

types/showdown/index.d.ts

@@ -1,6 +1,6 @@
-// Type definitions for Showdown 1.7.2
+// Type definitions for Showdown 1.7.3
 // Project: https://github.com/coreyti/showdown
-// Definitions by: cbowdon <https://github.com/cbowdon>, Pei-Tang Huang <https://github.com/tan9>
+// Definitions by: cbowdon <https://github.com/cbowdon>, Pei-Tang Huang <https://github.com/tan9>, Ariel-Saldana <https://github.com/arielsaldana>
 // Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
 
 export = Showdown;
@@ -362,10 +362,21 @@ declare namespace Showdown {
          */
         new (converterOptions?: ConverterOptions): Converter;
     }
+    /** 
+     * Helper Interface 
+     */
+    interface Helper {
+        replaceRecursiveRegExp(...args: any[]): string;
+    }
 
     /** Constructor function for a Converter */
     var Converter: ConverterStatic;
 
+    /**
+     * Showdown helper
+     */
+    var helper: Helper;
+
     /**
      * Setting a "global" option affects all instances of showdown
      */

types/showdown/showdown-tests.ts

@@ -17,6 +17,8 @@ var preloadedExtensions = [ 'my-ext' ],
 var configuredConverter = new showdown.Converter();
     configuredConverter.addExtension({type: 'output', filter: (text, converter)=>{return text.replace('#', '*')}}, 'myext');
 
+console.log(showdown.helper);
+
 console.log(converter.makeHtml(exampleMarkdown));
 // should log '<h1 id="hellomarkdown">hello, markdown</h1>'