Issue with setup files

[MykalMachon]

Hey everyone 👋🏻
I'm having an issue getting my vitest setup to work with setup files I've used in jest previously; I was hoping that I could find some help here!

What's going wrong 😔

Specifically, I'm trying to use fake-indexeddb (which is an in-memory implementation of the IndexedDB web API) while testing a little NPM package I'm working on.

In jest, you just have to put import 'fake-indexeddb/auto at the top of your setup file, and everything works as expected. For some reason in vitest I'm still getting errors saying IndexedDB is not defined when doing this.

Reproducible Example 🤔

FormStore: this is the NPM package I mentioned previously. I think everything in there is pretty standard but here's a quick reference:

1. Vite config: self explanatory
2. Vitetest setup file: self explanatory
3. Test file: Just uncomment line 17 to see the isssue

Just open the repo, npm install, uncomment line 17 in the test file, and run npm run test to see the issue

Any Help Is Appreciated 😬

I was banging my head against this for a few hours today, so I'm hoping it's just something silly I'm missing (Admittedly, I'm relatively new to testing with jest (have done a bit in cypress, and quite a bit with PyTest) so I'm almost sure it is 😅)

Thanks in advance to anyone who takes a look at this!

[MykalMachon]

Solution 🎉

I found a solution! A few minutes after writing this up, I found this discussion question asking something similar

Basically all I had to do was

// vitest-setup.ts
import indexeddb from 'fake-indexeddb';

globalThis.indexedDB = indexeddb;

Huge shoutout to @sheremet-va for the existing solution