Vessel NodeJS Library

The Vessel NodeJS library makes it easy to integrate with Vessel Web3 identity tokens and attestations in JavaScript applications.

Install

$ npm install vessel-node

or

$ yarn add vessel-node

Usage

Vessel()

To create an instance of Vessel, type save new Vessel() somewhere you can access it throughout your code base.

Vessel.addPermittedScope(<server_name>)

This function takes in a string of the server name to accept JWTs for.

Must be called at least one time before calling Vessel.getWeb3UserContext().

Vessel.getWeb3UserContext(<cookies_object>)

This function takes in an object with the shape { cookie_name: 'cookie_value' }. With ExpressJS, this corresponds to req.cookies.

Example

Configure a permitted server name scope for incoming sessions: NOTE: This should match your TLS certificate hostname

// vessel.ts
import Vessel from 'vessel-node';

export const vessel = new Vessel();
vessel.addPermittedScope('my.servername.com');

Extracting the Web3 User's ID & Attestations from an HTTPS request:

import { vessel } from './vessel';

const handleWeb3UserRequest = (req, res) => {
  const web3Session = vessel.getWeb3UserContext(req.cookies);
  if (!web3Session) {
    return res.sendStatus(401);
  }
  const verifiedUsername = web3Session.attestations.name;
  const verifiedEmail = web3Session.attestations.email;
  const verifiedSMS = web3Session.attestations.sms;
  console.log(`[+] Got verified web3 ID session for
User ID: ${web3Session.userId}
Name: ${verifiedUsername}
Email: ${verifiedEmail}
SMS: ${verifiedSMS}`);
  return res.status(200).send(web3Session);
};