export default class tools {
    static isJsonStr(jsonStr: string): boolean;
    static trim(str: string): string;
    static isNull(s: string): boolean;
    static arrayContains(array: Array<Object>, element: Object): boolean;
    static GetQueryString(locationSearch: string, name: string): string;
    /**
     * 获取当前时间
     * @return 返回时间类型 yyyy-MM-dd HH:mm:ss
     */
    static sysTime(): string;
    /**
     *  时间补0
     *
     * @return 返回时间类型 yyyy-MM-dd HH:mm:ss
     */
    static getMakeZero(s: any): string;
    static isApp(): boolean;
}