import { IColorObj } from './types';
export declare function isValidKey(key: string | number | symbol, object: object): key is keyof typeof object;
export declare const toHex: (n: number) => string;
export declare const toHexString: (colorObj: IColorObj) => string;
export declare const createDocument: <T extends keyof HTMLElementTagNameMap>(elType: T, styleObj: Record<string, string | number>, parent: HTMLElement | DocumentFragment) => HTMLElementTagNameMap[T];
export declare const getId: () => string;