export declare const randomInputTypes: readonly ["email", "password"];
export type RandomInputType = typeof randomInputTypes[number];
export declare class DataHelper {
    static getRandomFirstName(): any;
    static getRandomLastName(): any;
    static getRandomEmailAddress(): any;
    static getRandomData(dataType: string): string;
    static getPostcodeByState(state: string): string;
    static getValueFromCollection(data: {
        [k: string]: any;
    }, myKey: string): any;
    static addDataToCollection(data: {
        [k: string]: any;
    }, myKey: string, myValue: any): void;
    static isKeyExistsInMyCollection(data: {
        [k: string]: any;
    }, myKey: string): boolean;
    static cleanMyCollection(data: {
        [k: string]: any;
    }): void;
    static getDataFromSimpleObject(data: {}, expectedKey: string): string;
    static isObjectEmpty(data: {}): boolean;
}