import { AnyObject } from './types';
export declare const isFunction: (value: unknown) => value is Function;
export declare const isNull: (value: unknown) => value is null;
export declare const isRegex: (value: unknown) => value is RegExp;
export declare const isObject: (value: unknown) => value is AnyObject;
export declare const isUndefined: (value: unknown) => value is undefined;