import * as yup from 'yup';
/**
 * Schema for validating email addresses.
 * Requires a valid email format and is mandatory.
 */
export declare const emailSchema: yup.StringSchema<string, yup.AnyObject, undefined, "">;
/**
 * Schema for validating passwords.
 * Requires at least 8 characters, one uppercase, one lowercase, and one number.
 */
export declare const passwordSchema: yup.StringSchema<string, yup.AnyObject, undefined, "">;
/**
 * Schema for validating phone numbers.
 * Accepts optional '+' and up to 15 digits.
 */
export declare const phoneSchema: yup.StringSchema<yup.Maybe<string | undefined>, yup.AnyObject, undefined, "">;
/**
 * Schema for a required string field.
 */
export declare const requiredStringSchema: yup.StringSchema<string, yup.AnyObject, undefined, "">;
/**
 * Schema for an optional string field.
 */
export declare const optionalStringSchema: yup.StringSchema<yup.Maybe<string | undefined>, yup.AnyObject, undefined, "">;
/**
 * Schema for a required number field.
 * Ensures the value is a number.
 */
export declare const numberSchema: yup.NumberSchema<number, yup.AnyObject, undefined, "">;
/**
 * Schema for an optional number field.
 * Ensures the value is a number if provided.
 */
export declare const optionalNumberSchema: yup.NumberSchema<yup.Maybe<number | undefined>, yup.AnyObject, undefined, "">;
/**
 * Schema for a required date field.
 * Ensures the value is a valid date.
 */
export declare const dateSchema: yup.DateSchema<Date, yup.AnyObject, undefined, "">;
/**
 * Schema for a required URL field.
 * Ensures the value is a valid URL.
 */
export declare const urlSchema: yup.StringSchema<string, yup.AnyObject, undefined, "">;
/**
 * Schema for login forms.
 * Requires email and password fields.
 */
export declare const loginSchema: yup.ObjectSchema<{
    email: string;
    password: string;
}, yup.AnyObject, {
    email: undefined;
    password: undefined;
}, "">;
/**
 * Schema for registration forms.
 * Requires first name, last name, email, password, and confirm password fields.
 * Ensures confirm password matches password.
 */
export declare const registrationSchema: yup.ObjectSchema<{
    firstName: string;
    lastName: string;
    email: string;
    password: string;
    confirmPassword: string;
}, yup.AnyObject, {
    firstName: undefined;
    lastName: undefined;
    email: undefined;
    password: undefined;
    confirmPassword: undefined;
}, "">;
/**
 * Schema for contact forms.
 * Requires name, email, and message fields.
 * Phone is optional.
 */
export declare const contactSchema: yup.ObjectSchema<{
    name: string;
    email: string;
    phone: yup.Maybe<string | undefined>;
    message: string;
}, yup.AnyObject, {
    name: undefined;
    email: undefined;
    phone: undefined;
    message: undefined;
}, "">;
/**
 * Type for login form values inferred from loginSchema.
 */
export type LoginForm = yup.InferType<typeof loginSchema>;
/**
 * Type for registration form values inferred from registrationSchema.
 */
export type RegistrationForm = yup.InferType<typeof registrationSchema>;
/**
 * Type for contact form values inferred from contactSchema.
 */
export type ContactForm = yup.InferType<typeof contactSchema>;