import { ChannelGate } from "../routing/index.js";
import { C as ChannelType } from "../packem_shared/types.d-C7l7qdMG.js";
import "../packem_shared/notification.d-D0ado_cy.js";
import "../packem_shared/types.d-CRs03TYV.js";
import "../packem_shared/provider.d-Dh32nRm9.js";
/**
 * A subscriber's channel preferences. A channel set to `false` is opted out; channels
 * absent default to allowed.
 */
interface SubscriberPreferences {
  channels: Partial<Record<ChannelType, boolean>>;
}
interface IsAllowedOptions {
  /** Critical notifications bypass opt-outs (e.g. security alerts). */
  critical?: boolean;
}
/**
 * Stores per-subscriber channel preferences and answers allow/deny questions.
 */
interface PreferenceStore {
  get: (subscriberId: string) => Promise<SubscriberPreferences> | SubscriberPreferences;
  isAllowed: (subscriberId: string, channel: ChannelType, options?: IsAllowedOptions) => Promise<boolean> | boolean;
  set: (subscriberId: string, preferences: SubscriberPreferences) => Promise<void> | void;
}
/**
 * In-memory {@link PreferenceStore}.
 */
declare class MemoryPreferenceStore implements PreferenceStore {
  #private;
  get(subscriberId: string): SubscriberPreferences;
  set(subscriberId: string, preferences: SubscriberPreferences): void;
  isAllowed(subscriberId: string, channel: ChannelType, options?: IsAllowedOptions): boolean;
}
/**
 * Builds a {@link ChannelGate} for `route(...)` from a preference store. The subscriber id
 * is resolved from each payload (default: the payload's `to` field, stringified).
 * @param store The preference store.
 * @param options Resolution options.
 * @param options.critical When true the produced gate treats every send as critical, bypassing opt-outs.
 * @param options.subscriberId Resolver mapping a payload to its subscriber id (defaults to the `to` field).
 * @returns A gate suitable for `route(notification, message, { gate })`.
 */
declare const preferencesGate: (store: PreferenceStore, options?: {
  critical?: boolean;
  subscriberId?: (payload: {
    to?: unknown;
  }) => string | undefined;
}) => ChannelGate;
export { IsAllowedOptions, MemoryPreferenceStore, PreferenceStore, SubscriberPreferences, preferencesGate };