vite.config.ts

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

// https://vitejs.dev/config/
export default defineConfig({
  plugins: [
    react(),
    dts({
      insertTypesEntry: true,
      outDir: 'dist/types',
    }),
  ],
  build: {
    lib: {
      // Could also be a dictionary or array of multiple entry points
      entry: 'src/index.tsx',
      name: 'react-code-container',
      // the proper extensions will be added
      fileName: 'index',
      formats: ['es', 'cjs'],
    },
    rollupOptions: {
      // make sure to externalize deps that shouldn't be bundled
      // into your library
      external: [
        'react',
        'react-dom',
        'react/jsx-runtime',
        'highlight.js',
        '@tanstack/react-virtual',
      ],
      output: {
        // Provide global variables to use in the UMD build
        // for externalized deps
        globals: {
          react: 'React',
          'react-dom': 'ReactDOM',
        },
        exports: 'named',
        assetFileNames: ({ name }) => {
          if (/\.css$/.test(name ?? '')) {
            return 'styles/base.css';
          }

          // default value
          // ref: https://rollupjs.org/guide/en/#outputassetfilenames
          return '[name][extname]';
        },
      },
    },
  },
});