frontend/src/app.d.ts

// See https://kit.svelte.dev/docs/types#app
// for information about these interfaces
// and what to do when importing types

declare global {
	namespace App {
		// interface Locals {}
		// interface PageData {}
		// interface PageError {}
		// interface Platform {}
		interface Window {
			parentIFrame: unknown;
		}
	}
}