/**
 * Returns a codec that takes in a CSV string and outputs a string array.
 *
 * The string is splitted on the "," character. It uses `stringSplit(",")`
 * internally.
 *
 * @returns A CSV codec.
 */
export declare const csv: () => import("zod").ZodCodec<import("zod").ZodString, import("zod").ZodArray<import("zod").ZodString>>;