/**
 * Number validation module for double (floating point) numbers
 * Provides validation functionality for checking if a number is a floating point value
 */
import type { ValidateReturnType } from "../../Validate/type";
/**
 * Creates a validator for checking if a number is a floating point value
 * @param {string} [message] - Custom error message for validation failure
 * @returns {ValidateReturnType<number>} - Validator for double numbers
 */
export declare const double: (message?: string) => ValidateReturnType<number>;