Mongoose's default promise library is deprecated in MEAN stack

Question

I\'m trying to start a MEAN-stack server, however I\'m getting this error msg:

Mongoose: mpromise (mongoose\'s default promise library) is deprecated,

Answer 1

Work for me.

Mongoose v4.11.7 resolve the promise problem

const mongoose = require('mongoose');
mongoose.Promise = global.Promise;
mongoose.connection.openUri('mongodb://127.0.0.1:27017/app_db', { /* options */ });

Mongoose #save()

var article = new Article(Obj);
article.save().then(function(result) {
    return res.status(201).json({
        message: 'Saved message',
        obj: result
    });
}, function (err) {
    if (err) {
        return res.status(500).json({
            title: 'Ac error occurred',
            error: err
        });
    }
});