Upsert error, object.key called on non-object

[RomainLK]

Basically, I'm trying to upsert into an empty collection.
Here is my code:

db.metadata.update(
    { category : item.category } ,
    item,
    {upsert : true },
    function(err, doc){ 
    callback(null);
    });

Just before I check if item is not null. Still I get this error:

Error: Object.keys called on non-object
at Function.keys (native)
at checkObject (C:\node\webservice_client\node_modules\nedb\lib\model.js:48:

So far I have modified that function in model.js and checked that the obj is not null. Seems to be working for now.

  if (typeof obj === 'object' && !_.isNull(obj) ) {

[louischatriot]

It seems like the bug that happened when one property of a document was null. It has been fixed in v0.7.4, could you upgrade to the latest version, test again and tell me if it works?

[RomainLK]

Ups indeed, was stuck with v0.7.3 as I forgot to update my package.json to get newer version. Thanks.

[louischatriot]

Great :)