import { type Result } from "@fjall/generator";
import type { AwsProvider } from "../../aws/AwsProvider.js";
/**
 * Idempotently provision the buildx registry-cache repository beside the app's
 * image repository: create-if-absent, then (re)apply the shared untagged-image
 * lifecycle policy. Mirrors the `fjall build` provisioner
 * (`@fjall/cli` EcrBuildOrchestrator → EcrRepositoryService) — both address the
 * same physical repo via `buildCacheRepositoryName` and the shared policy text,
 * so neither path can drift the other.
 *
 * Failure messages are pre-masked at construction — callers may surface
 * `error.message` to log/callback sinks without re-masking.
 */
export declare function ensureBuildCacheRepository(awsProvider: AwsProvider, cacheRepositoryName: string, abortSignal?: AbortSignal): Promise<Result<void>>;