vite.config.ts

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

export default defineConfig({
  plugins: [react()],
  base: process.env.NODE_ENV === 'production' ? '/react-midi-player2/' : '/',
  server: {
    port: 3000,
    open: true,
  },
  publicDir: 'public',
  build: {
    lib: {
      entry: resolve(__dirname, 'index.ts'),
      name: 'MIDIPlayer',
      formats: ['es', 'cjs'],
      fileName: (format) => `index.${format === 'es' ? 'mjs' : 'js'}`,
    },
    rollupOptions: {
      external: ['react', 'react-dom'],
      output: {
        exports: 'named',
        globals: {
          react: 'React',
          'react-dom': 'ReactDOM',
        },
        assetFileNames: (assetInfo) => {
          if (assetInfo.name?.endsWith('.css')) {
            return 'style.css';
          }
          return assetInfo.name || 'asset';
        },
      },
    },
  },
});