export interface ShardedCatalogCacheKeyInput {
    readonly shardId: string;
    readonly rootDir: string;
    readonly configPath?: string;
    readonly cacheKey: string;
}
interface ShardedCatalogAnchor {
    readonly shardId: string;
    readonly rootDir: string;
    readonly configPath?: string;
}
/**
 * Validate a bounded project-relative POSIX anchor stored in sharded cache
 * provenance. `.` represents the configured project root.
 */
export declare function isSafeShardedCacheAnchor(value: unknown, maxLength: number): value is string;
/** Return shard provenance in deterministic identity order before persistence. */
export declare function sortShardedCatalogAnchors<T extends ShardedCatalogAnchor>(inputs: readonly T[]): T[];
/**
 * Build the unified sharded-catalog cache key from the exact fragment cache
 * keys that feed the merge. Shared by the producer and freshness verifier.
 */
export declare function buildShardedCatalogCacheKey(inputs: readonly ShardedCatalogCacheKeyInput[]): string;
export {};
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