uid2

What is uid2?

The uid2 npm package is a simple utility for generating unique IDs. It is often used in scenarios where you need to create unique tokens, session IDs, or any other form of unique identifier.

What are uid2's main functionalities?

Generate Unique ID

This feature allows you to generate a unique ID of a specified length. In this example, a 32-character unique ID is generated.

const uid2 = require('uid2');
const id = uid2(32);
console.log(id);

Other packages similar to uid2

uuid

The uuid package is a popular library for generating RFC4122 UUIDs (Universally Unique Identifiers). It offers more standardized and widely recognized unique ID generation compared to uid2.

nanoid

The nanoid package is a small, secure, URL-friendly unique string ID generator. It is known for its performance and small size, making it a good alternative to uid2 for generating unique IDs.

shortid

The shortid package is used for generating short, non-sequential, URL-friendly unique IDs. It is useful when you need shorter IDs compared to those generated by uid2.

README

uid2

Generate unique ids. Pass in a length and it returns a string.

Installation

npm install uid2

Examples

Without a callback it is synchronous:

const uid = require('uid2');

const id = uid(10);
// id => "hbswt489ts"

With a callback it is asynchronous:

const uid = require('uid2');

uid(10, function (err, id) {
  if (err) throw err;
  // id => "hbswt489ts"
});

Imported via uid2/promises it returns a Promise:

const uid = require('uid2/promises');

async function foo() {
  const id = await uid(10);
  // id => "hbswt489ts"
}

License

MIT