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, plug in your own promise library instead: http://mongoosejs.com/docs/promises.html

I tried to search some answers here but the one that I found wasn't clear enough for me:

(node:3341) DeprecationWarning: Mongoose: mpromise

I found the file calling the mongoose.connect, but the codes on that issue didn't work for me, can anyone explain for me how it works?

Answer 1

use this code,before the mongo connection and this will resolve the promise problem.

mongoose.Promise = global.Promise;