Использование Mongoose Unified Topology
// source: https://mongoosejs.com/docs/migrating_to_6.html#no-more-deprecation-warning-options
// No longer necessary:
mongoose.set('useFindAndModify', false);
await mongoose.connect('mongodb://localhost:27017/test', {
useNewUrlParser: true, // <-- no longer necessary
useUnifiedTopology: true // <-- no longer necessary
});
Adorable Ant