Improved useFetch

Related to #19

front/src/api/announcement/types.ts

@@ -0,0 +1,59 @@
+import { isObject } from '../../utils/types'
+import { Category, isCategory } from '../../assets/category'
+
+type AnnouncementResponse = {
+    id: number,
+    user_id: number,
+    name: string,
+    category: Category,
+    best_by: number,
+    address: string,
+    longtitude: number,
+    latitude: number,
+    description: string,
+    src: string | null,
+    metro: string,
+    trashId: number | null,
+    booked_by: number
+}
+
+const isAnnouncementResponse = (obj: unknown): obj is AnnouncementResponse => isObject(obj, {
+    'id': 'number',
+    'user_id': 'number',
+    'name': 'string',
+    'category': isCategory,
+    'best_by': 'number',
+    'address': 'string',
+    'longtitude': 'number',
+    'latitude': 'number',
+    'description': 'string',
+    'src': 'string?',
+    'metro': 'string',
+    'trashId': 'number?',
+    'booked_by': 'number'
+})
+
+type Announcement = {
+    id: number,
+    userId: number,
+    name: string,
+    category: Category,
+    bestBy: number,
+    address: string,
+    lng: number,
+    lat: number,
+    description: string | null,
+    src: string | null,
+    metro: string,
+    trashId: number | null,
+    bookedBy: number
+}
+
+export type {
+    Announcement,
+    AnnouncementResponse,
+}
+
+export {
+    isAnnouncementResponse,
+}