Mongoose – RangeError: Maximum Call Stack Size Exceeded

I was having this same issue and I started digging through the mongoose source code (version 3.8.14). Eventually it led me to this line within

• mongoose/node_modules/mongodb/lib/mongodb/collection/core.js -> insert(…) -> insertWithWriteCommands(…) ->

• mongoose/node_modules/mongodb/lib/mongodb/collection/batch/ordered.js -> bulk.insert(docs[i]) -> addToOperationsList(…) -> bson.calculateObjectSize(document, false);

  var bsonSize = bson.calculateObjectSize(document, false);

Apparently, this calls BSON.calculateObjectSize, which calls calculateObjectSize which then infinitely recurses. I wasn’t able to dig that far in to what caused it, but figured that it may have something to do with the mongoose wrapper binding functions to the Schema. Since I was inserting raw data into mongoDB, once I decided to change the bulk insert in mongoose to a standard javascript object, the problem went away and bulk inserts happened correctly. You might be able to do something similar.

Essentially, my code went from

//EDIT: mongoose.model needs lowercase 'm' for getter method

var myModel = mongoose.model('MyCollection');
var toInsert = myModel();
var array = [toInsert];
myModel.collection.insert(array, {}, function(err, docs) {});

to

//EDIT: mongoose.model needs lowercase 'm' for getter method

var myModel = mongoose.model('MyCollection');
var toInsert = { //stuff in here 
   name: 'john',
   date: new Date()
};
var array = [toInsert];
myModel.collection.insert(array, {}, function(err, docs) {});