import { z } from "zod/v4";
/**
 * Preserve the Zod 4.0-compatible declaration shape while using newer Zod 4
 * implementations at runtime. Newer releases infer the discriminator as a
 * second type parameter, which older `zod/v4` permalinks cannot consume.
 */
export type CompatibleZodDiscriminatedUnion<Types extends readonly [z.ZodTypeAny, ...z.ZodTypeAny[]]> = z.ZodDiscriminatedUnion<Types>;
export declare function discriminatedUnion<const Types extends readonly [z.ZodTypeAny, ...z.ZodTypeAny[]]>(discriminator: string, options: Types): CompatibleZodDiscriminatedUnion<Types>;
/**
 * Same declaration-compat trick for `z.preprocess`: newer Zod 4 releases
 * declare its result as `ZodPreprocess`, which older `zod/v4` permalinks do
 * not export. Erase it to the portable `ZodType` shape in declarations.
 */
export declare function preprocess<T extends z.ZodTypeAny>(fn: (value: unknown) => unknown, schema: T): z.ZodType<z.output<T>, unknown>;