import type { Request } from 'express';
export declare function generateUUID(): `${string}-${string}-${string}-${string}-${string}`;
export declare function nanosecond2ms(nanoseconds: bigint): number;
export declare function sleep(ms: number): Promise<unknown>;
export declare function md5(content: string): string;
export declare function uint8ArrayToBase64(buffer: Uint8Array): string;
export declare function base64ToUint8Array(base64: string): Uint8Array<ArrayBuffer>;
export declare function GetClientIPFromRequest(req: Request): string | null;
export declare function splitBearerToken(bearer: string): string | null;
export declare function parseToken(token: string, secret?: string): any | null;
export declare function getToken(payload: any, secret?: string): string;
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