Calling fromJS to amend an existing model with an ObservableArray fails

[dgee2]

Hi,

Calling fromJS to amend an existing model with an ObservableArray fails with an "Out of Stack Trace" exception. This has been traced back to the merge call in fromJS which in turn calls extendObject.

Example:

var model = function () {
    var Checkboxes = ko.mapping.fromJS({
        Funds: []
    });
    return ko.mapping.fromJS({
        Checkboxes: Checkboxes
    });
}();
ko.mapping.fromJS({ Funds: [{ t: 15 }] }, model.Checkboxes);