import { FormControl } from '@angular/forms';
export declare class RcFunctionsService {
    constructor();
    /**
     * Generate and return a random GUID
     * @returns Random unique GUID
     */
    createGuid(): string;
    /**
     *
     * @param obj
     * @param prefix
     * @returns array represent a query string
     */
    convertArrayForQueryString(obj: any, prefix: any): any[];
    /**
     * @param arr - array of objects
     * @param key - field in object
     * @param asc
     * @returns any[]
     */
    sortArrayByKey(arr: any[], key: string, asc?: boolean): any[];
    /**
     * create array of key value numbers
     * @param max
     * @returns number[]
     */
    createValueKeyArray(max: any): any[];
    /**
     * clear array from a certain value
     * @param arr - array of any
     * @param clearVal - value to clear
     * @returns any[]
     */
    clearArray(arr: any[], clearVal?: any): any[];
    /**
     * hash object
     * @param data
     * @returns number
     */
    hash(data: any): number;
    /**
     * hash object
     * @param name
     * @param url
     * @returns string
     */
    getUrlParamByName(name: any, url?: any): string;
    /**
     * check if form control is dirty and not valid and return error message according to the error key and the error messages
     * @param formControl
     * @param errors
     * @returns string
     */
    getErrorMsg(formControl: FormControl, errors: any): any;
}