fix lint errors + cleanup

packages/hs2js/vite.config.js

@@ -0,0 +1,20 @@
+import { defineConfig } from 'vite';
+import { resolve } from 'path';
+
+// https://vitejs.dev/config/
+export default defineConfig({
+  plugins: [],
+  build: {
+    lib: {
+      entry: resolve(__dirname, 'src', 'index.mjs'),
+      name: 'hs2js',
+      formats: ['es', 'iife'],
+      fileName: (ext) => ({ es: 'index.mjs', iife: 'index.js' })[ext],
+    },
+    rollupOptions: {
+      // external: [...Object.keys(dependencies)],
+      plugins: [],
+    },
+    target: 'esnext',
+  },
+});