Answers for "(node:551076) DeprecationWarning: collection.ensureIndex is deprecated. Use createIndexes instead."

collection.ensureIndex is deprecated

mongoose.connect(dbURI, {
    useNewUrlParser: true,
    useUnifiedTopology: true,
    useCreateIndex: true,
    useFindAndModify: true,
})

(node:3168) DeprecationWarning: collection.ensureIndex is deprecated. Use createIndexes instead. (Use `node --trace-deprecation ...` to show where the warning was created)

mongoose.set('useCreateIndex', true);

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

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