import type { RegistrationSubmission } from './types/member.js';
import type { EventRegistrationSubmission } from './types/event.js';
export interface ValidationError {
    field: string;
    code: 'REQUIRED' | 'INVALID_FORMAT';
    message: string;
}
export declare function validateEmail(email: string): boolean;
/**
 * Basic phone format validation. For strict international validation,
 * use libphonenumber-js at the call site.
 */
export declare function validatePhone(phone: string): boolean;
export declare function validateOtp(otp: string): boolean;
export declare function validateRequired(fields: Record<string, unknown>, required: string[]): string | null;
export declare function validateRegistrationForm(data: Partial<RegistrationSubmission>): ValidationError[];
export declare function validateEventRegistrationForm(data: Partial<EventRegistrationSubmission>): ValidationError[];
export declare function validateContactForm(data: Partial<{
    name: string;
    email: string;
    phone?: string;
    message: string;
}>): ValidationError[];
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