import { defineConfig } from 'vite';
import { svelte } from '@sveltejs/vite-plugin-svelte';
import sveltePreprocess from 'svelte-preprocess';

export default defineConfig({
  plugins: [svelte({ preprocess: sveltePreprocess() })],
  worker: { format: 'es' },
  // overnight-whole-app box UAT: vite preview on :18181 → FastAPI on :18182
  server: {
    proxy: { '/api': { target: 'http://127.0.0.1:18182', changeOrigin: true } },
  },
  preview: {
    // Cloudflare quick tunnel Host header (public UAT without Tailscale)
    allowedHosts: true,
    proxy: { '/api': { target: 'http://127.0.0.1:18182', changeOrigin: true } },
  },
});