basic react package build config

packages/react/vite.config.js

@@ -1,7 +1,40 @@
-import { defineConfig } from 'vite'
-import react from '@vitejs/plugin-react'
+import { defineConfig } from 'vite';
+import react from '@vitejs/plugin-react';
+import { peerDependencies, dependencies } from './package.json';
+import { resolve } from 'path';
 
 // https://vitejs.dev/config/
 export default defineConfig({
-  plugins: [react()]
-})
+  plugins: [
+    react({
+      jsxRuntime: 'classic',
+    }),
+  ],
+  build: {
+    lib: {
+      entry: resolve(__dirname, 'src', 'index.js'),
+      formats: ['es', 'cjs'],
+      fileName: (ext) => `index.${ext}.js`,
+      // for UMD name: 'GlobalName'
+    },
+    rollupOptions: {
+      external: [
+        ...Object.keys(peerDependencies),
+        ...Object.keys(dependencies),
+        '@strudel.cycles/tone',
+        '@strudel.cycles/eval',
+        '@strudel.cycles/core',
+        '@strudel.cycles/core/util.mjs',
+        '@strudel.cycles/mini',
+        '@strudel.cycles/tonal',
+        '@strudel.cycles/midi',
+        '@strudel.cycles/xen',
+        '@strudel.cycles/serial',
+        '@codemirror/view',
+        '@codemirror/highlight',
+        '@codemirror/state'
+      ],
+    },
+    target: 'esnext',
+  },
+});