/**
 * Validation utilities using Zod v4
 *
 * This module uses Zod v4 features for improved performance and type safety.
 * Key v4 improvements used:
 * - Enhanced error messages with structured error configuration
 * - Improved object schema validation with custom messages
 * - Better union type handling
 * - More efficient parsing and validation
 */
import { z } from 'zod/v4';
/**
 * Schema for validating MongoDB ObjectId strings using Zod v4
 */
export declare const objectIdSchema: z.ZodString;
/**
 * Schema for validating ISO date strings using Zod v4 format
 */
export declare const isoDateSchema: z.ZodString;
/**
 * Schema for validating Date objects or date strings using Zod v4
 */
export declare const dateOrStringSchema: z.ZodUnion<readonly [z.ZodDate, z.ZodString, z.ZodString]>;
/**
 * Schema for updateTaskComplete arguments using Zod v4
 */
export declare const updateTaskCompleteArgsSchema: z.ZodObject<{
    taskId: z.ZodString;
    completeOn: z.ZodOptional<z.ZodUnion<readonly [z.ZodDate, z.ZodString, z.ZodString]>>;
    limitResponsePayload: z.ZodDefault<z.ZodBoolean>;
}, z.core.$strip>;
/**
 * Type for updateTaskComplete arguments
 */
export type UpdateTaskCompleteArgs = z.infer<typeof updateTaskCompleteArgsSchema>;
/**
 * Validates and parses updateTaskComplete arguments
 * @param args - Arguments to validate
 * @returns Parsed and validated arguments
 * @throws SunsamaAuthError if validation fails
 */
export declare function validateUpdateTaskCompleteArgs(args: {
    taskId: string;
    completeOn?: Date | string;
    limitResponsePayload?: boolean;
}): UpdateTaskCompleteArgs;
/**
 * Schema for validating updateCalendarEvent arguments
 */
export declare const updateCalendarEventArgsSchema: z.ZodObject<{
    eventId: z.ZodString;
    options: z.ZodOptional<z.ZodObject<{
        isInviteeStatusUpdate: z.ZodOptional<z.ZodBoolean>;
        skipReorder: z.ZodOptional<z.ZodBoolean>;
        limitResponsePayload: z.ZodOptional<z.ZodBoolean>;
    }, z.core.$strip>>;
}, z.core.$strip>;
/**
 * Validates updateCalendarEvent arguments
 * @throws SunsamaValidationError if validation fails
 */
export declare function validateUpdateCalendarEventArgs(args: {
    eventId: string;
    options?: {
        isInviteeStatusUpdate?: boolean;
        skipReorder?: boolean;
        limitResponsePayload?: boolean;
    };
}): {
    eventId: string;
    options?: {
        isInviteeStatusUpdate?: boolean;
        skipReorder?: boolean;
        limitResponsePayload?: boolean;
    };
};
/**
 * Schema for validating createCalendarEvent arguments using Zod v4
 */
export declare const createCalendarEventArgsSchema: z.ZodObject<{
    title: z.ZodString;
    startDate: z.ZodCustom<string | Date, string | Date>;
    endDate: z.ZodCustom<string | Date, string | Date>;
    visibility: z.ZodOptional<z.ZodEnum<{
        private: "private";
        public: "public";
        default: "default";
        confidential: "confidential";
    }>>;
    transparency: z.ZodOptional<z.ZodEnum<{
        opaque: "opaque";
        transparent: "transparent";
    }>>;
}, z.core.$strip>;
/**
 * Converts a Date or string to ISO string for API usage
 * @param value - Date object or string
 * @returns ISO string representation
 */
export declare function toISOString(value: Date | string): string;
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