vite.config.ts

import tailwindcss from '@tailwindcss/vite';
import react from '@vitejs/plugin-react';
import path from 'path';
import {defineConfig, loadEnv} from 'vite';

export default defineConfig(({mode}) => {
  const env = loadEnv(mode, '.', '');
  return {
    plugins: [react(), tailwindcss()],
    define: {
      'process.env.GEMINI_API_KEY': JSON.stringify(env.GEMINI_API_KEY),
    },
    resolve: {
      alias: {
        '@': path.resolve(__dirname, '.'),
      },
    },
    server: {
      // HMR is disabled in AI Studio via DISABLE_HMR env var.
      // Do not modify—file watching is disabled to prevent flickering during agent edits.
      hmr: process.env.DISABLE_HMR !== 'true',
      headers: {
        'Cross-Origin-Opener-Policy': 'same-origin-allow-popups',
      }
    },
    test: {
      globals: true,
      environment: 'jsdom',
      setupFiles: './src/test/setup.ts',
    }
  };
});