import { defineConfig } from 'vite';
import { realpathSync } from 'node:fs';
import { resolve } from 'node:path';

// The test suite validates against soundbox (a sibling checkout, the vault
// layout), whose sources reach numbl's compiler internals through a
// `numbl-src` alias; mirror it so those sources load here too. The page
// itself uses neither.
const soundbox = resolve(import.meta.dirname, '../soundbox');
let numblSrc: string | null = null;
try {
  numblSrc = realpathSync(resolve(soundbox, 'node_modules/numbl/src'));
} catch {
  // No soundbox checkout: the app still builds; only the tests need it.
}

export default defineConfig({
  base: './',
  resolve: {
    alias: numblSrc ? { 'numbl-src': numblSrc } : {},
  },
  server: {
    fs: { allow: [import.meta.dirname, ...(numblSrc ? [soundbox, numblSrc] : [])] },
  },
  build: { target: 'es2022' },
});