passport.deserializeUser() not being called and req.user is undefined - node.js

Question

Alright, I've been racking my brain over this for hours now. When I call my 'sign-in' route the passport middleware works fine and returns with a req.user obj, but when I call another route after that, req.user for that other route is undefined. Where exactly have I messed up here? I'm not sure it matters, but I am calling my API routes from a react client.
auth
router.post(
"/sign-in",
passport.authenticate("local"),
async (req, res, next) => {
if (!req.user) console.log("NO USER!*******************");
try {
const user = _.get(req, "user", "");
res.status(200).json(user);
} catch (e) {
console.log({ e });
return res.status(400).json(false);
}
}
);
My Server
app.use(cors());
app.use(cookieparser());
app.use(logger("dev"));
app.use(bodyParser.urlencoded({ extended: true }));
app.use(bodyParser.json());
app.use(
session({
secret: "super",
resave: false,
saveUninitialized: true,
cookie: { secure: false, maxAge: 4 * 60 * 60 * 1000 }
})
);
require("./utils/passport");
app.use(passport.initialize());
app.use(passport.session());
./utils/passport
const _ = require("lodash");
const LocalStrategy = require("passport-local").Strategy;
const { PrismaClient } = require("#prisma/client");
const prisma = new PrismaClient();
const bcrypt = require("bcrypt");
passport.serializeUser(function(user, done) {
done(null, user.id);
});
passport.deserializeUser(async function(id, done) {
console.log("");
console.log("deserializeUser*************************");
console.log("");
try {
const user = await prisma.user.findOne({ where: { id } });
if (!user) {
return done(null, false);
}
return done(null, user);
} catch (e) {
done(e);
}
});
passport.use(
new LocalStrategy(
{
passReqToCallback: true,
usernameField: "email"
},
async (req, email, password, done) => {
try {
const user = await prisma.user.findOne({ where: { email } });
if (!user) {
return done(null, false);
}
await bcrypt.compare(
password,
_.get(user, "password", ""),
(err, result) => {
if (!result) {
done(null, false);
}
done(null, user);
}
);
} catch (e) {
done(e);
}
}
)
);

Answer 1

I suspect something is wrong with the portion where you have your post method with passport authenticate.
This portion may be deleted:
if (!req.user) console.log("NO USER!*******************");
I think the asynchronous may produce here odd results. Then for the sake of troubleshooting, include in your
const user = _.get(req, "user", "");
real data, such as real user data. Thus you will be able to verify that the data is passing through.