/**
 * Any function
 */
declare type Fn = () => void

/**
 * Maybe it's a react ref, or a dom node.
 */
declare type MaybeRef<T> = T | MutableRefObject<T>

/**
 * Accepts either a ref object or a dom node and returns a dom node
 *
 * @param target - ref or a dom node
 * @returns dom node
 */
declare function unRef<T extends unknown = HTMLElement>(target: MaybeRef<T>): T

/**
 * Check if we're on the server or client side
 */
declare const isClient: boolean

/**
 * Check if object is a react ref
 */
declare const isRef: (obj: unknown) => boolean

declare const isBoolean: (val: any) => val is boolean

declare const isFunction: <T extends Function>(val: any) => val is T

declare const isNumber: (val: any) => val is number

declare const isString: (val: unknown) => val is string

declare const isObject: (val: any) => val is object

declare const isWindow: (val: any) => val is Window

declare const noop: () => void

declare const rand: (min: number, max: number) => number