fix: Fixed TS errors + the build

Author: rubyboy

.travis.yml

@@ -12,7 +12,7 @@ notifications:
 node_js:
   - '6'
 before_install:
-  - npm i -g npm
+  # - npm i -g npm
   - npm i -g @angular/cli
   - printf "//registry.npmjs.org/:_authToken=${NPM_TOKEN}\n" >> .npmrc
 before_script:

src/materialize-directive.ts

@@ -178,7 +178,7 @@ export class MaterializeDirective implements AfterViewInit,DoCheck,OnChanges,OnD
                 } else {
                     picker.set('select', jqueryPickerElement.val());
                 }
-                jqueryPickerElement.on('change', e => nativeElement.dispatchEvent(new CustomEvent('input')));
+                jqueryPickerElement.on('change', e => nativeElement.dispatchEvent((<any>CustomEvent("input"))));
             });
         }
 
@@ -194,7 +194,7 @@ export class MaterializeDirective implements AfterViewInit,DoCheck,OnChanges,OnD
                 } else {
                     picker.set('select', jqueryPickerElement.val());
                 }
-                jqueryPickerElement.on('change', e => nativeElement.dispatchEvent(new CustomEvent('input')));
+                jqueryPickerElement.on('change', e => nativeElement.dispatchEvent((<any>CustomEvent("input"))));
            });
         }