Tests are currently failing on Windows

[claviska]

To repro, run the following on a Windows machine not using WSL:

npm install @shoelace-style/shoelace
cd shoelace
npm i
npm run build
npm run test

This was reported by a user and also fails on my Windows machine. Apologies, but I don't have the error handy to paste here.

[claviska]

After searching the error message, this comment suggested it was a problem with the source-map package on Node 18+. In short, the package differentiates between Node and browsers by detecting window.fetch, which was introduced in Node 18, causing the breakage.

This was fixed in 0.7.4, so adding source-map to devDependencies using that version or higher seems to do the trick on Windows. I'm not sure why macOS, Linux, et al were unaffected.