import type { NotificationProvider } from "./types.js";
export interface DurableNotificationProviderProbe {
    /** Isolated, non-delivering instances of the exact selected implementations. */
    readonly providers: ReadonlyArray<NotificationProvider>;
    /** Recreate those instances while retaining only provider-backend durable state. */
    restart(): Promise<ReadonlyArray<NotificationProvider>>;
    acceptedCount(providerName: string, idempotencyKey: string): number | Promise<number>;
}
/** Exact selected provider set plus an isolated, non-delivering behavioral probe. */
export interface DurableNotificationProviderRuntime {
    readonly providers: ReadonlyArray<NotificationProvider>;
    createIsolatedProbe(): Promise<DurableNotificationProviderProbe>;
}
export declare const durableNotificationProviderPort: import("@voyant-travel/core/project").VoyantPort<DurableNotificationProviderRuntime>;