passportjs solid conf for jwt

const JwtStrategy = require('passport-jwt').Strategy;
const ExtractJwt = require('passport-jwt').ExtractJwt;

const jwtConfigurations = {
    jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
    secretOrKey: process.env.JWT_SECRET,
    issuer: 'accounts.examplesoft.com',
    audience: 'yoursite.net'
}
passport.use(new JwtStrategy(jwtConfigurations, jwtStrategyVerifyCallback));

function jwtStrategyVerifyCallback (jwtPayload, done) {
    User.findOne({id: jwtPayload.sub}, function(err, user) {
        if (err) {
            return done(err, false);
        }
        if (user) {
            return done(null, user);
        } else {
            return done(null, false);
            // or you could create a new account
        }
    });
}