Fix uploader not working because window.user was removed

svelte/src/lib/FilesystemAPI.svelte.ts

@@ -1,6 +1,8 @@
 // Response types
 // ==============
 
+import { get_endpoint } from "./NovaAPI"
+
 export type GenericResponse = {
 	value: string,
 	message: string,
@@ -320,11 +322,7 @@ export const fs_path_url = (path: string) => {
 		path = "/" + path
 	}
 
-	if (window["api_endpoint"] !== undefined) {
-		return window["api_endpoint"] + "/filesystem" + fs_encode_path(path)
-	} else {
-		throw Error("fs_path_url: api_endpoint is undefined")
-	}
+	return get_endpoint() + "/filesystem" + fs_encode_path(path)
 }
 
 export const fs_encode_path = (path: string) => {