(node:24652) DeprecationWarning: collection.ensureIndex is deprecated. Use createIndexes instead. code example

Example 1: (node:14800) DeprecationWarning: collection.ensureIndex is deprecated. Use createIndexes instead. (Use `node --trace-deprecation ...` to show where the warning was created)

mongoose
  .connect(process.env.DB_CONNECTION, {
    useNewUrlParser: true,
    useUnifiedTopology: true,
    dbName: "business",
    useCreateIndex: true
  })

Example 2: (node:2496) DeprecationWarning: collection.ensureIndex is deprecated. Use createIndexes instead.

mongoose.set('useNewUrlParser', true);
mongoose.set('useFindAndModify', false);
mongoose.set('useCreateIndex', true);