interface PruneS3Props {
    bucketName: string;
    currentBuildId: string;
    /**
     * Time to live in milliseconds.
     */
    msTtl: number;
}
/**
 * Given `bucketName`, `currentBuildId`, and `msTtl`, list all objects
 * in the bucket and delete any that 1/ do not have a metadata key of "next-build-id"
 * and value of `currentBuildId` and 2/ were created more than `msTtl` ago
 */
export declare function pruneS3(props: PruneS3Props): Promise<void>;
export {};