export declare const NOTIFICATION_CHANNELS: readonly ["email", "slack", "in_app"];
export type NotificationChannel = (typeof NOTIFICATION_CHANNELS)[number];
export declare const toNotificationChannel: (raw: string) => NotificationChannel;
export declare const NOTIFICATION_FREQUENCIES: readonly ["instant", "daily"];
export type NotificationFrequency = (typeof NOTIFICATION_FREQUENCIES)[number];
export declare const toNotificationFrequency: (raw: string) => NotificationFrequency;
export interface RegistryNotificationEvent {
    channels: NotificationChannel[];
    defaultEnabled: Partial<Record<NotificationChannel, boolean>>;
    displayName: string;
    eventId: string;
    suppressible: boolean;
}
export interface RegistryNotificationGroup {
    displayName: string;
    events: RegistryNotificationEvent[];
    groupId: string;
}
export interface NotificationRegistry {
    frequencyOptions: NotificationFrequency[];
    groups: RegistryNotificationGroup[];
    defaultFrequency?: NotificationFrequency;
}
/**
 * The registry is a singleton (not per-tenant). We keep the wrapper so
 * Immer/RTK can safely represent "cleared" as `registry: undefined` — a bare
 * top-level `undefined` state is not observable by Immer, which prevents
 * the `clearAll` extraReducers case from taking effect.
 */
export interface NotificationRegistryState {
    registryEpoch: number;
    registry?: NotificationRegistry;
}