nodly/templates/utils/generaterandomid.js

Nodly is an interactive CLI for scaffolding modern Node.js/Express.js backend projects with instant setup for databases, mailers, queues, sockets, and more. Skip boilerplate and start building features fast.

import { randomUUID, randomBytes } from "crypto";

// Generate UUID v4
export const generateUUID = () => {
  return randomUUID();
};

// Short Alphanumeric ID (e.g., "aZ3fL9")
export const generateShortId = (length = 6) => {
  const chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
  return Array.from({ length }, () => chars[Math.floor(Math.random() * chars.length)]).join("");
};

// Numeric ID (e.g., OTPs)
export const generateNumericId = (length = 6) => {
  const digits = "0123456789";
  return Array.from({ length }, () => digits[Math.floor(Math.random() * digits.length)]).join("");
};

// Timestamp + short ID (e.g., "20250614125059_x7Kz")
export const generateTimestampId = () => {
  const timestamp = new Date().toISOString().replace(/[-:.TZ]/g, "");
  return `${timestamp}_${generateShortId(4)}`;
};

// Custom prefix ID (e.g., "user_4fD8kL")
export const generateCustomId = (prefix = "id", length = 6) => {
  return `${prefix}_${generateShortId(length)}`;
};

// Simulated Credit Card ID (16-digit number)
export const generateCCID = () => {
  const start = ["4", "5", "3"]; // Visa, MasterCard, AMEX
  let cc = start[Math.floor(Math.random() * start.length)];
  while (cc.length < 16) {
    cc += Math.floor(Math.random() * 10);
  }
  return cc;
};

// Order-like ID (e.g., "ORD-8fK2-X7L9")
export const generateOrderId = () => {
  return `ORD-${generateShortId(4).toUpperCase()}-${generateShortId(4).toUpperCase()}`;
};

// MongoDB-like ObjectID (24 hex chars)
export const generateObjectId = () => {
  return randomBytes(12).toString("hex");
};

// NanoID (Optional)
export const generateNanoId = (length = 12) => {
  const chars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789_-";
  return Array.from({ length }, () => chars[Math.floor(Math.random() * chars.length)]).join("");
};