After reading the documentation at http://mongodb.github.io/node-mongodb-native/3.1/api/Collection.html#initializeOrderedBulkOp, I wanted to call some updateOne methods on the bulk object returned by initializeUnorderedBulkOp:

const bulk = collection.initializeUnorderedBulkOp();
{{bulk.updateOne({ _id: foo }, { $set:

});}}

However, this resulted in TypeError: bulk.updateOne is not a function.

I found out from StackOverflow that I need to prefix each operation with "find" (why?).

The documentation should mention all available methods on the bulk operation types, not just execute:

http://mongodb.github.io/node-mongodb-native/3.1/api/OrderedBulkOperation.html

http://mongodb.github.io/node-mongodb-native/3.1/api/UnorderedBulkOperation.html