utils.api.productAttributes.optionChange can't convert null to object

[sfroment]

if you use a demo store in the console simply run this

window.stencilUtils.api.productAttributes.optionChange(77, "action=add&product_id=77&attribute%5B108%5D=69&attribute%5B109%5D=10&qty%5B%5D=1", function (err, resp) {
                console.log('err', err);
                console.log('resp', resp);
            });

and you'll have the error can't convert null to object

[pvaladez]

The api.optionChange function does set the template argument to null as a default value, so I would think this is a bug.

However, as a workaround, you can just include a template file in the call:

window.stencilUtils.api.productAttributes.optionChange(77, "action=add&product_id=77&attribute%5B108%5D=69&attribute%5B109%5D=10&qty%5B%5D=1", 'products/product-view', function (err, resp) {
                console.log('err', err);
                console.log('resp', resp);
            });

Note: The version of Cornerstone I was referencing(6.1.3) is using stencil-utils 6.8.1, but the last release listed on GitHub is 6.3.0...