/**
 * Importing npm packages
 */
/**
 * Importing user defined packages
 */
import { MaskOptions } from '../interfaces/index.js';
declare class StringUtils {
    startsAndEndsWith(str: string, value: string): boolean;
    parseCsv(input: string): string[];
    /**
     * Interpolates the given string with the given object
     */
    interpolate(str: string, obj: Record<string, any>): string;
    maskEmail(email: string): string;
    maskNumber(num: string | number, keepStart?: number, keepEnd?: number): string;
    maskWords(input: string): string;
    mask(input: string, opts?: MaskOptions): string;
}
export declare const stringUtils: StringUtils;
export {};