mongobd error: (Use `node --trace-deprecation ...` to show where the warning was created) code example

Example 1: DeprecationWarning: current Server Discovery and Monitoring engine is deprecated, and will be removed in a future version. To use the new Server Discover and Monitoring engine, pass option { useUnifiedTopology: true } to the MongoClient constructor.

mongoose.connect(mongoConnectionString, {useNewUrlParser: true, useUnifiedTopology: true});

Example 2: { use UnifiedTopology: true }

mongoose.connect("mongodb://localhost:27017/NAME", { useUnifiedTopology: true, useNewUrlParser: true });