How to duplicate a mongodb collection with the node.js driver?

Question

Is there anyway to duplicate an collection through the nodejs mongodb driver?

i.e. collection.copyTo("duplicate_collection");

Answer 1

You can eval copyTo() server-side though it will block the entire mongod process and won't create indexes on the new collection.

var copyTo = "function() { db['source'].copyTo('target') };"

db.eval(copyTo, [], function(err, result) {
  console.log(err);
});

Also note the field type warning.

"When using db.collection.copyTo() check field types to ensure that the operation does not remove type information from documents during the translation from BSON to JSON. Consider using cloneCollection() to maintain type fidelity."