import { defineConfig } from 'vite'
import react from '@vitejs/plugin-react'

// https://vite.dev/config/
export default defineConfig({
  plugins: [react()],
  build: {
    // Basic minification (rolldown-vite compatible)
    minify: true,
    // Optimize chunk size
    chunkSizeWarningLimit: 1000,
    rollupOptions: {
      output: {
        manualChunks(id) {
          // Split vendor libraries for better caching
          if (id.includes('node_modules')) {
            // Separate heavy libraries into their own chunks
            if (id.includes('framer-motion')) {
              return 'framer-motion';
            }
            if (id.includes('papaparse')) {
              return 'papaparse';
            }
            if (id.includes('lucide-react')) {
              return 'lucide-react';
            }
            // Everything else goes to vendor
            return 'vendor';
          }
        },
        // Optimize file naming for cache busting
        entryFileNames: 'assets/[name]-[hash].js',
        chunkFileNames: 'assets/[name]-[hash].js',
        assetFileNames: 'assets/[name]-[hash].[ext]'
      },
    },
    // Source maps disabled in production for smaller size
    sourcemap: false,
  },
  // Optimize dependencies
  optimizeDeps: {
    include: ['react', 'react-dom', 'papaparse'],
  },
})