fixed type errors

src/context/reducers/AlertReducers.ts

@@ -8,18 +8,20 @@ export const initalState = {
 export function reducer(state: AlertState, action: AlertPayload) {
   switch (action.type) {
     case "ADD": {
-      const alreadyExists = state.allAlerts.some(
-        (alertItem) => alertItem.vrm === action.payload.vrm
-      );
-      if (alreadyExists) {
-        return { ...state };
-      } else {
+      if (action.payload && "vrm" in action.payload) {
+        const alreadyExists = state.allAlerts.some(
+          (alertItem) => alertItem.vrm === action.payload.vrm
+        );
+        if (alreadyExists) {
+          return state;
+        }
         return {
           ...state,
-          alertList: [...state.allAlerts, action.payload],
           allAlerts: [...state.allAlerts, action.payload],
+          alertList: [...state.allAlerts, action.payload],
         };
       }
+      return state;
     }
 
     case "SEARCH": {