setRequestHeader fail on XMLHttpRequestOverride

[eilon-shai]

Hi,

I am using msw in our tests and I cant understand how the functionality of
setRequestHeader can work on XMLHttpRequestOverride.
in my code I am creating a new XMLHttpRequest() and that become XMLHttpRequestOverride object in the tests instead of XMLHttpRequest.

then in the setRequestHeader code of XMLHttpRequest.js I am failing on the:

exports.is = value => { return utils.isObject(value) && utils.hasOwn(value, implSymbol) && value[implSymbol] instanceof Impl.implementation; };

There is a constraint to use the original implementation.

any idea how can I overcome this?

Thanks,
Eilon