update react test (#870)

packages/react-test/rollup.config.mjs

@@ -0,0 +1,35 @@
+/* eslint-env node */
+import rimraf from 'rimraf'
+import babel from '@rollup/plugin-babel'
+import { nodeResolve } from '@rollup/plugin-node-resolve'
+import commonjs from '@rollup/plugin-commonjs'
+import replace from '@rollup/plugin-replace'
+
+// remove existing distribution
+rimraf('./dist', () => console.info('recreating dist'))
+
+export default {
+  input: 'src/index.js',
+  output: {
+    file: 'dist/react-test.js',
+    sourcemap: true
+  },
+  plugins: [
+    replace({
+      preventAssignment: true,
+      'process.env.NODE_ENV': '"production"'
+    }),
+    nodeResolve({
+      extensions: ['.js'],
+      browser: true
+    }),
+    babel({
+      babelHelpers: 'bundled',
+      presets: [['@babel/preset-react', { runtime: 'automatic' }]],
+      exclude: 'node_modules/**'
+    }),
+    commonjs({
+      transformMixedEsModules: true
+    })
+  ]
+}