build: configure build system for React Hook support

- Change to multi-entry configuration (index and react entry points)
- Remove UMD format (ES modules only)
- Configure React as external dependency
- Change exports from 'default' to 'auto'
- Add @vitejs/plugin-react plugin for React support

Author: knowledgecode

vite.config.ts

@@ -1,20 +1,25 @@
 import { defineConfig } from 'vite';
+import { resolve } from 'path';
 import dts from 'vite-plugin-dts';
 import terser from '@rollup/plugin-terser';
 import license from 'rollup-plugin-license';
+import react from '@vitejs/plugin-react';
 
 export default defineConfig({
   build: {
     minify: false,
     lib: {
-      entry: 'src/index.ts',
-      name: 'blokr',
-      formats: ['es', 'umd'],
-      fileName: format => format === 'es' ? 'index.js' : 'blokr.js',
+      entry: {
+        index: resolve(__dirname, 'src/index.ts'),
+        react: resolve(__dirname, 'src/react.ts')
+      },
+      formats: ['es']
     },
     rollupOptions: {
+      external: ['react'],
       output: {
-        exports: 'default',
+        entryFileNames: '[name].js',
+        exports: 'auto',
         plugins: [
           license({
             banner: '@license\nCopyright 2025 KNOWLEDGECODE\nSPDX-License-Identifier: MIT'
@@ -25,6 +30,7 @@ export default defineConfig({
     }
   },
   plugins: [
+    react(),
     dts({
       include: ['src/**/*']
     })

vitest.config.ts

@@ -1,7 +1,9 @@
 import { defineConfig } from 'vitest/config';
 import { playwright } from '@vitest/browser-playwright';
+import react from '@vitejs/plugin-react';
 
 export default defineConfig({
+  plugins: [react()],
   test: {
     browser: {
       enabled: true,