otp-generator

A simple and lightweight npm package to generate random OTP (One-Time Password) numbers.

Installation

npm install otp-gen-random

Usage

CommonJS (require)

const getOTP = require('otp-gen-random');

// Generate a 6-digit OTP
const otp = getOTP(6);
console.log(otp); // e.g., "123456"

ES Modules (import)

import getOTP from 'otp-gen-random';

// Generate a 4-digit OTP
const otp = getOTP(4);
console.log(otp); // e.g., "5678"

API

getOTP(length)

Generates a random OTP with the specified number of digits.

Parameters:

• length (number): The number of digits in the OTP (must be a positive integer)

Returns:

• string: A random OTP string containing only digits (0-9)

Example:

const otp1 = getOTP(5);   // Returns a 5-digit OTP
const otp2 = getOTP(6);   // Returns a 6-digit OTP
const otp3 = getOTP(10);  // Returns a 10-digit OTP

Features

• ✅ Simple and lightweight
• ✅ Works with both CommonJS and ES Modules
• ✅ No external dependencies
• ✅ Type-safe (throws error on invalid input)

License

ISC

Author

Deepak Carpenter