import * as Notifications from "expo-notifications";import * as Effect from "effect/Effect";import { Platform } from "react-native"; export type NotificationPermissionResult =  | { readonly type: "unsupported" }  | { readonly type: "granted" }  | { readonly type: "denied"; readonly canAskAgain: boolean }; export const requestAgentNotificationPermission: Effect.Effect<  NotificationPermissionResult,  unknown> = Effect.gen(function* () {  if (Platform.OS !== "ios") {    return { type: "unsupported" };  }   const existing = yield* Effect.tryPromise({    try: () => Notifications.getPermissionsAsync(),    catch: (error) => error,  });  if (existing.granted) {    return { type: "granted" };  }   if (!existing.canAskAgain) {    return { type: "denied", canAskAgain: false };  }   const requested = yield* Effect.tryPromise({    try: () =>      Notifications.requestPermissionsAsync({        ios: {          allowAlert: true,          allowBadge: true,          allowSound: true,        },      }),    catch: (error) => error,  });  return requested.granted    ? { type: "granted" }    : { type: "denied", canAskAgain: requested.canAskAgain };});