Bcrypt password comparison doesn't work. Even user.password is empty in Node.js Express App
There is nothing wrong with your code. I have tested it on my side here. The only anomaly I am looking at is while sending the response you are having an Array of Responses but reading it as a single object.
Here is what the above jargon I said means
INSTEAD OF
User.find({incomingEmail}).then((user) => { res.send(user.password);}).catch(() => { res.status(404).json({status: 404, data: 'Email not matched'});});Do this
User.find({incomingEmail}).then((user) => { res.send(user[0].password); }).catch(() => { res.status(404).json({status: 404, data: 'Email not matched'});});OR IN ANOTHER CASE
what I can see you can do is to instead of using MONGOOSE ONLY FIND method ! you can go with FINDONE method too so that it would have no need to read out an array of JSON responses for a single user. FINDONE will help you with the code you already have.