$_$twiz is not defined when using typewiz-webpack in a Gatsby (React) project

[madeleineostoja]

I'm migrating a Gatsby project to Typescript and trying to use Typewiz for it. I've set it up in webpack config, but I'm getting the following error whenever I try and run a build:

ReferenceError: $_$twiz is not defined

I think because Gatsby SSRs the project, and $_$twiz isn't available in Node? I dunno, just a guess.

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Edit: On second thought that can't be the issue, because it breaks in dev too which just runs webpack dev server normally