Hammerjs: optional inputClass is a HammerInput, not a void function (#13349)

hammerjs/hammerjs-tests.ts

@@ -112,4 +112,31 @@
   {
     myElement.textContent += ev.type + " ";
   } );
-})();
+})();
+
+
+(() =>
+{
+  var myElement = document.getElementById( 'myElement' );
+
+  // We create a manager object using custom options
+  var options: HammerOptions = {
+    recognizers: [
+      [Hammer.Tap, { event: 'doubletap', taps: 2 }],
+      [Hammer.Tap, { event: 'singletap' }],
+    ],
+    inputClass: Hammer.TouchInput,
+  };
+  var mc = new Hammer.Manager( myElement, options );
+
+  // we want to recognize this simulatenous, so a quadrupletap will be detected even while a tap has been recognized.
+  mc.get( 'doubletap' ).recognizeWith( 'singletap' );
+  // we only want to trigger a tap, when we don't have detected a doubletap
+  mc.get( 'singletap' ).requireFailure( 'doubletap' );
+
+
+  mc.on( "singletap doubletap", function ( ev )
+  {
+    myElement.textContent += ev.type + " ";
+  } );
+})();

hammerjs/index.d.ts

@@ -82,7 +82,7 @@ interface HammerDefaults extends HammerOptions
   touchAction:string;
   cssProps:CssProps;
 
-  inputClass:() => void;
+  inputClass:HammerInput;
   inputTarget:EventTarget;
 }
 
@@ -105,7 +105,7 @@ interface HammerOptions
   touchAction?:string;
   recognizers?:RecognizerTuple[];
 
-  inputClass?:() => void;
+  inputClass?:HammerInput;
   inputTarget?:EventTarget;
 }