export type StringFieldTypes = 'non-empty-string' | 'email';
export type PhoneNumberValidationRule = {
    type: 'phone-number';
    /** The value to validate */
    value: string;
    region: string;
};
export type BooleanValidationRule = {
    type: 'boolean';
    /** The value to validate */
    value: boolean;
    /** The value required for the validation rule to be satisfied */
    requiredValue: boolean;
    /** Error message; while the error message is generally straightforward
     * for other types of validation such as an invalid phone number, boolean
     * validation isn't specific enough to the user and needs some additional
     * context.
     */
    errorMessage: string;
};
export type StringValidationRule = {
    type: StringFieldTypes;
    /** The value to validate */
    value: string;
};
export type PostalCode5DigitValidationRule = {
    type: 'postal-code-5-digit';
    /** The value to validate */
    value: string;
};
export type FieldValidationRule = StringValidationRule | BooleanValidationRule | PhoneNumberValidationRule | PostalCode5DigitValidationRule;
export type Form = {
    rules: {
        [key: string]: FieldValidationRule;
    };
};
export declare const useValidation: (form: Form) => {
    errors: {
        [key: string]: string | null;
    };
    errorsExist: boolean;
};