React server side rendering self is not defined error

[ubershmekel]

When I npm install @shopify/buy-button-js and import it in a https://github.com/zeit/next.js app I get this error during the react server side rendering:

ReferenceError: self is not defined

I'm not sure of a way to conditionally include the shopify button code. This is not an issue with shopify-buy though I'm not sure how to get ShopifyBuy.UI working with that (UI seems to be undefined).

[ubershmekel]

Here's a working example with the problem. Just run yarn then yarn run dev

https://github.com/ubershmekel/shopifybuybuttonissue

[melissaluu]

We've updated all our packages recently. Reopen if this issue still occurs.