style: fix linting errors

Author: eug-vs

hooks/sortByDate.ts

@@ -2,7 +2,7 @@ import _ from 'lodash';
 import { HookContext } from '@feathersjs/feathers';
 
 export default async (context: HookContext): Promise<HookContext> => {
-  _.set(context, 'params.query.$sort', { createdAt: - 1});
+  _.set(context, 'params.query.$sort', { createdAt: -1 });
   return context;
-}
+};
 

services/feed/feed.class.ts

@@ -10,7 +10,7 @@ export default class Feed {
     return this.app.service('polls').find(params);
   }
 
-  setup (app: Application) {
+  setup(app: Application): void {
     this.app = app;
   }
 }

services/profiles/profiles.class.ts

@@ -13,7 +13,7 @@ export default class Profiles {
     });
   }
 
-  setup (app: Application) {
+  setup(app: Application): void {
     this.app = app;
   }
 }