Sync and Async way of Verifying and Signing JWT

async-sign.js

const { sign } = require('jsonwebtoken')

const token = new Promise((resolve, reject) => {
  sign({ data: "Your Data" }, "Your_Secret", {}, (err, token) => {
    if (err) reject(err);
    else resolve(token)
  });
});

async-verify.js

const { verify } = require('jsonwebtoken')

const data = new Promise((resolve, reject) => {
  verify(token, "Your_Secret", (err, payload) => {
    if (err) reject(err);
    else resolve(payload);
  });
})

sync-sign.js

const { sign } = require('jsonwebtoken')

const token = sign({ data: "Your Data" }, "Your_Secret");

sync-verify.js

const { verify } = require('jsonwebtoken')

const data = verify(token, "Your_Secret");