Node mongodb: Error: connection closed due to parseError

Question

Using the native \'mongodb\' npm package, I\'m receiving

Error: connection closed due to parseError

When making a very basic query:

Answer 1

Answering my own question to hopefully stop the next person from tearing their hair out:

As noted here, this error message is useless and doesn't relate to the actual problem. The production Mongo driver throws away all errors in a catch block.

To find what the error actually is:

• open your node_modules/mongodb

• find server.js

• look for mongoReply.parseBody

• log the err to see something actually useful.

In my case:

ReferenceError: collection is not defined

Edit: Node MongoDB native 1.4 is now stable, and includes a fix to this bug.

Answer 2

For people who are using mongoose instead mongodb can check in the following location for the same.

/node_modules/mongoose/node_modules/mongodb/lib/mongodb/connection