import z from "zod";
export type NullableCliOption = 'true' | 'false' | 'unknown';
export declare const cliBoolean: () => z.ZodEffects<z.ZodEnum<["true", "false", "unknown"]>, "true" | "unknown" | "false", "true" | "unknown" | "false">;
export declare const cliInteger: () => z.ZodEffects<z.ZodString, string, string>;
export declare const cliEnum: (options: any) => z.ZodEnum<z.Writeable<any>>;