immich/web/src/routes/auth/logout.ts

import type { RequestHandler } from '@sveltejs/kit';

export const post: RequestHandler = async ({ request }) => {
	return {
		headers: {
			'Set-Cookie': 'session=deleted; path=/; expires=Thu, 01 Jan 1970 00:00:00 GMT',
		},
		body: {
			ok: true,
		},
	};
};