Leafview refuses to open images unless they're all lowercase (e.g. .JPG won't open, but .jpg works). I've only tested this on my Mac.

just giving this a go. Here is my output, something with the vite config.
I installed vite via npm install -g vite;

vite --version
vite/4.4.9 win32-x64 node-v18.17.0

cargo tauri dev
     Running BeforeDevCommand (`npm run dev`)

> [email protected] dev
> vite

failed to load config from c:\working\tauri\leafview-tauri\vite.config.ts
error when starting dev server:
Error [ERR_MODULE_NOT_FOUND]: Cannot find package 'vite' imported from c:\working\tauri\leafview-tauri\vite.config.ts.timestamp-1695258344224-fdaf9dd54e192.mjs
    at new NodeError (node:internal/errors:405:5)
    at packageResolve (node:internal/modules/esm/resolve:887:9)
    at moduleResolve (node:internal/modules/esm/resolve:936:20)
    at defaultResolve (node:internal/modules/esm/resolve:1129:11)
    at nextResolve (node:internal/modules/esm/loader:163:28)
    at ESMLoader.resolve (node:internal/modules/esm/loader:835:30)
    at ESMLoader.getModuleJob (node:internal/modules/esm/loader:424:18)
    at ModuleWrap.<anonymous> (node:internal/modules/esm/module_job:77:40)
    at link (node:internal/modules/esm/module_job:76:36)
       Error The "beforeDevCommand" terminated with a non-zero status code.

I really like tauview however it seems that it isn't able to be set as a default app for opening images on MacOS.

i.e.. File -> Get Info -> Open With -> File picker doesn't allow tauview to be chosen

Could this perhaps be added?

Flatpaks are a more robust and secure alternative to snaps, and also is becoming a more standardized option for non-based and Ubuntu based distributions alike, and some of them come with flatpak preinstalled out of the box (CentOS, ElementaryOS, EndlessOS, Fedora, Linux Mint, PureOS and ZorinOS).

One of the biggest advantages in contrast with snaps, is that flatpaks are sandboxed, and therefore this results in a more secure and private experience since it is harder for some kind of malware to attack the system, or for said application to retrieve user information without them knowing it. Another good point is that everything that's uploaded to Flathub (Flatpak's centralized repository) is compiled by the same developers, and cannot be done by some random person on the internet which could lead to outdated packages, piracy, and whatnot. Just like snaps, Flatpaks are compatible with every distribution that supports it, so you don't have to be uploading a million different releases.

https://flathub.org/
https://flatpak.org/
https://flatpak.org/setup/
https://docs.flatpak.org/en/latest/