type ValidationKey = string | symbol | number;
interface ValidationError<TValidationKeys extends ValidationKey = string> {
    key: TValidationKeys;
    message: string;
}
type Validator<TValidationKeys extends ValidationKey = string> = [TValidationKeys, ValidatorFunc];
type ValidatorFunc = () => string | null | Promise<string | null>;
/**
 * Gets a validation error for a key.
 * @param key The key of the error to get.
 * @param errors The list of errors.
 * @returns The error for the given key, or null if there is no error.
 */
declare function getError<TValidationKeys extends ValidationKey = string>(key: TValidationKeys, errors: ValidationError<TValidationKeys>[]): string | null;
/**
 * Runs the validation using all provided validators.
 * @param validators The list of validators.
 * @returns A list of validation errors.
 */
declare function runValidation<TValidationKeys extends ValidationKey = string>(...validators: Validator<TValidationKeys>[]): Promise<ValidationError<TValidationKeys>[]>;
export type { ValidationError, ValidationKey, Validator, ValidatorFunc };
export { getError, runValidation };