import * as z from './base';
export interface ZodOptionalDef<T extends z.ZodTypeAny = z.ZodTypeAny> extends z.ZodTypeDef {
    t: z.ZodTypes.optional;
    innerType: T;
}
export declare type ZodOptionalType<T extends z.ZodTypeAny> = T extends ZodOptional<z.ZodTypeAny> ? T : ZodOptional<T>;
export declare class ZodOptional<T extends z.ZodTypeAny> extends z.ZodType<T['_output'] | undefined, ZodOptionalDef<T>, T['_input'] | undefined> {
    toJSON: () => {
        t: z.ZodTypes.optional;
        innerType: object;
    };
    static create: <T_1 extends z.ZodTypeAny>(type: T_1) => ZodOptionalType<T_1>;
}