type ValidationRule = (field: string, value: unknown, payload: Record<string, unknown>) => string | undefined;
type ValidationSchema = Record<string, ValidationRule[]>;
declare function required(): ValidationRule;
declare function stringRule(): ValidationRule;
declare function minLength(minimum: number): ValidationRule;
declare function maxLength(maximum: number): ValidationRule;
declare function pattern(expression: RegExp): ValidationRule;
declare function enumRule<TValue extends string>(allowedValues: readonly TValue[]): ValidationRule;
declare function optional(): ValidationRule;
declare function integerRule(): ValidationRule;
declare function emailRule(): ValidationRule;
declare function confirmed(fieldName: string): ValidationRule;
declare function positiveIntegerRule(): ValidationRule;
declare function integerRange(minimum: number, maximum: number): ValidationRule;
declare function validateObject(payload: unknown, schema: ValidationSchema): Record<string, unknown>;
export type { ValidationRule, ValidationSchema };
export { confirmed, emailRule, enumRule, integerRange, integerRule, maxLength, minLength, optional, pattern, positiveIntegerRule, required, stringRule, validateObject, };