fix: update svelte.config.js to properly handle TypeScript #4020
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Description
TypeScript syntax inside the script tags of SvelteKit routes and components isn't properly handled without adding vitePreprocess, crashing the application.
With vitePreprocess, it works.
Fixes # (issue)
How Has This Been Tested?
I tried building an application from scratch with dfx new -> rust -> sveltekit, and it crashed when using syntax like
type MyType = { propertyA: string; propertyB: ArrayBuffer };
inside a<script lang="ts"></script>
tag in a svelte component or sveltekit page. Adding vitePreprocess solved it.Checklist: