import { defineConfig } from 'vite'
import { resolve } from 'path'

// Standalone bundle configuration for qrCodeUtils
export default defineConfig({
  build: {
    // Create standalone bundle for qrCodeUtils with dependencies
    lib: {
      entry: resolve(__dirname, 'src/utils/qrCodeUtils.js'),
      name: 'QRCodeUtils',
      formats: ['es', 'umd', 'iife'],
      fileName: (format) => `qr-code-utils.${format}.js`
    },
    rollupOptions: {
      // Include all dependencies in the bundle
      external: [],
      output: {
        // Global variable name for UMD/IIFE
        globals: {},
        // Bundle all dependencies
        inlineDynamicImports: true,
        // Optimize chunk splitting
        manualChunks: undefined
      }
    },
    // Optimize the bundle
    minify: 'terser',
    sourcemap: true,
    // Ensure all dependencies are included
    commonjsOptions: {
      include: [/node_modules/]
    },
    // Target modern browsers for smaller bundle
    target: 'es2018'
  },
  // Optimize dependencies
  optimizeDeps: {
    include: ['qrcode', 'imagetracer']
  },
  // Define environment
  define: {
    'process.env.NODE_ENV': '"production"'
  }
})