Superforms parse error reproduction

npm i
npm run dev

Submit form and open console to see SyntaxError

It is worth noting that in this case, at least in development, the browser is printing the 413 error request which is useful. When I encountered this in production it was not.

The logic I was hitting can be found here:

https://github.com/sveltejs/kit/blob/23d1df702f0fd77983040404352d8d83fd1dd8a1/packages/kit/src/exports/node/index.js#L27