/**
 * Number helper methods.
 */
export declare class NumberHelper {
    /**
     * Is the value an integer.
     * @param value Object to test for its integerness.
     * @returns True if the object is a integer.
     */
    static isInteger(value: any): value is Number;
    /**
     * Is the value a number.
     * @param value Object to test for its numberyness.
     * @returns True if the object is a number.
     */
    static isNumber(value: any): value is Number;
    /**
     * Is the value a float number formatted as a string, can be used for big numbers that would overflow parseFloat.
     * @param value The value to check
     * @returns True if the number is formatted correctly.
     */
    static isFloatString(value: string): boolean;
    /**
     * Is the value a integer number formatted as a string, can be used for big numbers that would overflow parseInt.
     * @param value The value to check
     * @returns True if the number is formatted correctly.
     */
    static isIntegerString(value: string): boolean;
}