Uncaught ReferenceError: process is not defined

[cuibonobo]

Running npm run build and npm run preview throws the following error in the console:

Uncaught ReferenceError: process is not defined
    <anonymous> http://localhost:3000/_app/chunks/vendor-eb0ffce1.js:1
vendor-eb0ffce1.js:1:11014

The error seems to be coming from here:

var require$$0=getAugmentedNamespace(__viteBrowserExternal),old$1={},pathModule=require$$0,isWindows="win32"===process.platform,fs$4=require$$0;

So it seems like something in Vite is expecting process.platform to exist in a browser environment.

The strange thing about this error is that I don't see it in a new project initialized with npm init svelte@next my-app. If it was purely a Vite bug I would think it would reproduce in a new project as well. I need to get the Svelte Kit options in the test project closer to what I'm using in this repo until I can reproduce the bug.

[cuibonobo]

The above error only happens if I turn hydration on and I'm not going to bother with that right now. (I thought I would need to address this as a fix for #12, but I found a simpler way to fix that.)