feat: add infra code (#2718)

packages/infra/vite.config.ts

@@ -0,0 +1,24 @@
+import { resolve } from 'node:path';
+
+import { fileURLToPath } from 'url';
+import dts from 'vite-plugin-dts';
+import { defineConfig } from 'vitest/config';
+
+const root = fileURLToPath(new URL('.', import.meta.url));
+
+export default defineConfig({
+  build: {
+    lib: {
+      entry: {
+        index: resolve(root, 'src/index.ts'),
+      },
+      formats: ['es', 'cjs'],
+      name: 'AffineInfra',
+    },
+  },
+  plugins: [
+    dts({
+      insertTypesEntry: true,
+    }),
+  ],
+});