Svelte compiler output library warnings & errors for Supabase library

[frantic0]

Mostly errors related to sourcemaps and inadequate use of 'this'

e.g.

(!) Error when using sourcemap for reporting an error: Can't resolve original location of error.
src/components/editors/ModelEditor.svelte: (217:17)

and

(!) this has been rewritten to undefined
https://rollupjs.org/guide/en/#error-this-is-undefined
node_modules/@supabase/supabase-js/dist/module/SupabaseClient.js
1: var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
^
2: function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
3: return new (P || (P = Promise))(function (resolve, reject) {
...and 1 other occurrence