import type { ExtensionContext } from "@code-yeongyu/senpi";
import type { MigrationNotice } from "./failover.js";
/**
 * Delivery point for migration notices.
 *
 * A provider stream runs with no `ExtensionContext` of its own, so the
 * extension entry point attaches the newest one here and the provider reports
 * through it. Notices are fire-and-forget: a stream that already lost its warm
 * cache must not also fail because the UI is unavailable.
 */
export interface MigrationSink {
    attach(ctx: ExtensionContext): void;
    report(providerId: string, notice: MigrationNotice): void;
}
export declare function createMigrationSink(): MigrationSink;
export declare const migrationSink: MigrationSink;