emaui/apps/backoffice/vite.config.mts

import { defineConfig } from 'vite';
import react from '@vitejs/plugin-react';
import { nxViteTsPaths } from '@nx/vite/plugins/nx-tsconfig-paths.plugin';

function userManagementSpaFallback() {
  const rewrite = (req) => {
    const url = req.url || '';
    if (!url.startsWith('/_um/') && url !== '/_um') return;
    if (/\.[a-zA-Z0-9]+$/.test(url.split('?')[0])) return; // real assets pass through
    req.url = '/_um/index.html';
  };
  return {
    name: 'user-management-spa-fallback',
    configureServer(s) { s.middlewares.use((req, _res, next) => { rewrite(req); next(); }); },
    configurePreviewServer(s) { s.middlewares.use((req, _res, next) => { rewrite(req); next(); }); },
  };
}

export default defineConfig({
  root: __dirname,
  cacheDir: '../../node_modules/.vite/apps/backoffice',
  server: {
    port: 4201,
    host: 'localhost',
  },
  preview: { port: 4201, host: 'localhost' },
  plugins: [react(), nxViteTsPaths(), userManagementSpaFallback()],
  resolve: {
    dedupe: ['react', 'react-dom', 'react-router-dom', '@tanstack/react-query'],
  },
  build: {
    outDir: '../../dist/apps/backoffice',
    emptyOutDir: true,
    reportCompressedSize: true,
  },
});