import moment from 'moment-timezone';
export declare class CommonUtils {
    static applyTimezone(timestamp: number, tz: string): moment.Moment;
    static formatTimestamp(timestamp: number, tz: string, format: string): string;
    static randomString(length?: number): string;
    static generateId(lengt?: number): string;
    static rgbaToHex(r: number, g: number, b: number, a?: number): string;
    static formatBytes(bytes: number): string;
    static padStr(val: number, len: number): string;
}