export declare class ArrayUtil {
    static toStringArray(value: any): string[];
    static toArray(value: any): any[];
    static isFilledStringArray(arr: any[]): boolean;
    static isEmptyArray(value: any): boolean;
    static uniqConcat(arrA: string[], arrB: string[]): string[];
    static subtractArray(arrA: string[], arrB: string[]): string[];
}