export type EffectiveNotificationPreference = {
    channel: string;
    description?: string;
    digest: string | null;
    enabled: boolean;
    group?: string;
    groupOrder?: number;
    label?: string;
    order?: number;
    source?: string;
    topic: string;
};
export type NotificationChannelId = "in_app" | "email" | "push";
export type NotificationChannelFlags = {
    email?: boolean;
    in_app?: boolean;
    push?: boolean;
};
export declare const DEFAULT_NOTIFICATION_CHANNEL_FLAGS: {
    readonly email: true;
    readonly in_app: true;
    readonly push: true;
};
export type NotificationChannelColumn = {
    api: NotificationChannelId;
    id: NotificationChannelId;
    label: string;
};
export declare const NOTIFICATION_CHANNEL_COLUMNS: readonly [{
    readonly api: "in_app";
    readonly id: "in_app";
    readonly label: "In-app";
}, {
    readonly api: "email";
    readonly id: "email";
    readonly label: "Email";
}, {
    readonly api: "push";
    readonly id: "push";
    readonly label: "Push";
}];
/** @deprecated Use {@link matrixColumnsFor}. */
export declare const MATRIX_DISPLAY_CHANNELS: readonly [{
    readonly api: "in_app";
    readonly id: "in_app";
    readonly label: "In-app";
}, {
    readonly api: "email";
    readonly id: "email";
    readonly label: "Email";
}, {
    readonly api: "push";
    readonly id: "push";
    readonly label: "Push";
}];
export declare function isNotificationChannelEnabled(flags: NotificationChannelFlags | undefined, id: NotificationChannelId): boolean;
export declare function matrixColumnsFor(flags?: NotificationChannelFlags): NotificationChannelColumn[];
export declare function notificationMatrixGridStyle(columnCount: number): {
    gridTemplateColumns: string;
};
export type NotificationAggregateSelection = "on" | "off" | "mixed";
export declare function aggregateChannelSelection(items: EffectiveNotificationPreference[]): NotificationAggregateSelection;
export type NotificationChannelState = {
    available: boolean;
    channel: NotificationChannelId;
    configured: boolean;
    destination?: string;
    selection: NotificationAggregateSelection;
    status?: "ready" | "needs-setup" | "unsupported";
    supported: boolean;
    visible: boolean;
};
export type NotificationMuteScope = {
    id: string;
    kind: "organization" | "project" | "resource";
    label: string;
};
export type PreferenceTopic = {
    channels: Record<string, EffectiveNotificationPreference | undefined>;
    custom: boolean;
    description?: string;
    group: string;
    groupOrder: number;
    label: string;
    order: number;
    topic: string;
};
export type PreferenceGroup = {
    group: string;
    order: number;
    topics: PreferenceTopic[];
};
export declare function groupFromTopic(topic: string, group?: string): string;
export declare function isPreferenceOverride(item: EffectiveNotificationPreference): boolean;
export declare function preferenceOverrideItems(items: readonly EffectiveNotificationPreference[]): EffectiveNotificationPreference[];
export declare function groupPreferenceTopics(items: EffectiveNotificationPreference[]): PreferenceGroup[];
export declare function channelItems(items: EffectiveNotificationPreference[], channel: NotificationChannelId): EffectiveNotificationPreference[];
export declare function resolveChannelStates(input: {
    channels?: NotificationChannelFlags;
    destinationEmail?: string;
    items: EffectiveNotificationPreference[];
}): NotificationChannelState[];