/**
 * This class contains helper functions to work with strings
 * @dynamic
 */
export declare class StringHelpers {
    /**
     * Function that receives a string, converts it to lowercase and replaces spaces with '_'
     * @param value string to be converted
     * @returns
     */
    static convertToFileFormat(value: string): string;
    /**
     * Validates if the string contains at least one number
     * @param value string to be validated
     * @returns
     * true if the string contains at least one number
     * false if the string does not contain any number
     */
    static validateStringHasNumber(value: string): boolean;
}