import { type ObjectType } from '../types/shims'; export declare function isEmpty(object: ObjectType): boolean; export declare function toNumber(text: string): number; export declare function sliceResults(arr: Array, max?: number): Array; export declare function findByKey(key: string, object: ObjectType): any; export declare function isYtURL(url: string): boolean; export declare function decodeHEX(hex: string): string;