import { Oun } from '../core/types';
export declare const isNull: (obj: any) => boolean;
export declare const isUndefined: (obj: any) => boolean;
export declare const isUndefinedOrNull: (obj: any) => boolean;
export declare const has: (data: Oun<string[]>, value: any) => boolean;
export declare const hasAny: (data: Oun<string[]>, values: Oun<any[]>) => boolean;
export declare const hasAll: (data: Oun<string[]>, values: Oun<any[]>) => boolean;