export declare class HelperService {
    /**
     * Find cookie by name in array of cookies
     *
     * @param cookies
     * @param name
     * @returns
     */
    getCookieValue(cookies: string[] | undefined, name: string): null;
    /**
     * Generates random number between given range
     *
     * @param min - starting number
     * @param max - ending number
     * @returns random number between min and max
     */
    getRandomInt(min: number, max: number): number;
    generateCsrfToken(): string;
    /**
     * Generates device id
     *
     * @returns device id
     */
    generateDeviceId(): number;
    /**
     * Returns given length of array
     *
     * @param number
     * @returns array of given number series
     */
    range(number: number): number[];
    /**
     * Randomly selects a number from given array of numbers
     *
     * @param choices
     * @returns number
     */
    choose(choices: number[]): number;
}
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