export type TComponentsOfKey = 'numbers' | 'letters' | 'all';

type TGetRandomKeySignature = (length: number, components: TComponentsOfKey) => string;

/**
    Generate new unique key
    @param {number} length length of your key
    @param {TComponentsOfKey} components additional information about your key

    @returns {string} unique key
*/
export const getRandomKey: TGetRandomKeySignature = (length, components) => {...}