import type { S3Config } from "./s3-client.js";
export declare const SESSION_OBJECT_STORE_ENV: {
    readonly bucket: "HASNA_SESSIONS_S3_BUCKET";
    readonly region: "HASNA_SESSIONS_S3_REGION";
    readonly endpoint: "HASNA_SESSIONS_S3_ENDPOINT";
    readonly prefix: "HASNA_SESSIONS_S3_PREFIX";
    readonly accessKeyId: "HASNA_SESSIONS_S3_ACCESS_KEY_ID";
    readonly secretAccessKey: "HASNA_SESSIONS_S3_SECRET_ACCESS_KEY";
};
export interface SessionObjectStoreConfig extends S3Config {
    prefix: string;
}
export declare function normalizeSessionObjectPrefix(prefix: string | undefined): string;
export declare function prefixSessionObjectKey(prefix: string, objectKey: string): string;
/**
 * Resolve optional session object storage without rendering any credential values.
 * A missing bucket means the legacy local-only path remains active.
 */
export declare function resolveSessionObjectStoreConfig(env?: NodeJS.ProcessEnv): SessionObjectStoreConfig | null;
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