import { z } from "zod";
declare const schema: z.core.$ZodBranded<z.ZodString, "AwsArn">;
export type AwsArn = z.infer<typeof schema>;
/**
 * Validates that a string is a valid AWS ARN.
 *
 * The schema enforces the following rules:
 * - There must be at least 6 tokens separated by colons.
 * - The first token must be "arn".
 * - The second token must be a valid AWS partition, as validated by `zu.aws.partition()`.
 * - The third token (service) cannot be empty. No further checks are done.
 * - The fourth token (region) can be empty or must be a valid AWS region, as validated by `zu.aws.region()`.
 * - The fifth token (account ID) can be empty or must be a valid AWS account ID, as validated by `zu.aws.accountId()`.
 * - The sixth token (resource ID/type) cannot be empty. No further checks are done.
 *
 * @returns A schema that validates AWS ARNs.
 *
 * @see https://docs.aws.amazon.com/IAM/latest/UserGuide/reference-arns.html
 */
export declare function arn(): z.core.$ZodBranded<z.ZodString, "AwsArn">;
export {};