vite.config.ts

import { defineConfig } from 'vite';
import { extname, relative, resolve } from 'path';
import { fileURLToPath } from 'node:url';
import { glob } from 'glob';
import react from '@vitejs/plugin-react';
import dts from 'vite-plugin-dts';
import { libInjectCss } from 'vite-plugin-lib-inject-css';

// https://vitejs.dev/config/
export default defineConfig({
  plugins: [
    react(),
    libInjectCss(),
    dts({
      include: ['src/lib'],
    }),
  ],
  build: {
    copyPublicDir: false,
    lib: {
      entry: resolve(__dirname, 'src/lib/index.ts'),
      formats: ['es'],
    },
    rollupOptions: {
      external: ['react', 'react/jsx-runtime'],
      input: Object.fromEntries(
        glob.sync(resolve('src/lib/**/*.+(ts|tsx)')).map((file) => [
          // This remove `src/` as well as the file extension from each
          // file, so e.g. src/nested/foo.js becomes nested/foo
          relative(
            'src/lib',
            file.slice(0, file.length - extname(file).length),
          ),

          // This expands the relative paths to absolute paths, so e.g.
          // src/nested/foo becomes /project/src/nested/foo.js
          fileURLToPath(new URL(file, import.meta.url)),
        ]),
      ),
      output: {
        assetFileNames: 'assets/[name][extname]',
        entryFileNames: '[name].js',
      },
    },
  },
  resolve: {
    alias: {
      '@/lib': resolve(__dirname, './src/lib'),
    },
  },
});