Update capitalize filter to Typescript.

Author: EEParker

samples/VueCliSample/ClientApp/src/views/Home.vue

@@ -28,12 +28,12 @@ import axios from 'axios';
 
 @Component({
   filters: {
-    capitalize: function(value: string) {
-      if (!value) return ''
-      value = value.toString()
-      return value.charAt(0).toUpperCase() + value.slice(1)
-    }
-  }
+    capitalize: (value: string) => {
+      if (!value) { return ''; }
+      value = value.toString();
+      return value.charAt(0).toUpperCase() + value.slice(1);
+    },
+  },
 })
 export default class Home extends Vue {
   private forecasts: IWeatherForecast[] = [{ summary: 'No data.' } as IWeatherForecast];