/**
 * Checks to see if an ARN is an S3 bucket or object ARN
 *
 * @param arn the ARN to check
 * @returns whether the ARN is an S3 bucket or object ARN
 */
export declare function isS3BucketOrObjectArn(arn: string): boolean;
/**
 * Get the bucket ARN from an S3 bucket or object ARN. Does not validate the input ARN.
 *
 * @param bucketOrObjectArn the ARN of the S3 bucket or object
 * @returns the ARN of the S3 bucket
 */
export declare function bucketArn(bucketOrObjectArn: string): string;
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