update packages and add valign

scripts/reveal.js/plugin/markdown/vite.config.ts

@@ -0,0 +1,23 @@
+import { resolve } from 'path';
+import { defineConfig } from 'vite';
+import { appendExtension } from '../../vite.config.ts';
+import { createPluginDts } from '../vite-plugin-dts.ts';
+
+// Once Vite supports multiple entries for plugins, this build can
+// be merged into the main vite.config.ts.
+// See https://github.com/vitejs/vite/pull/10609
+
+export default defineConfig({
+  build: {
+    emptyOutDir: false,
+    lib: {
+      formats: ['es', 'umd'],
+      entry: {
+        'plugin/markdown': resolve(__dirname, 'index.ts'),
+      },
+      name: 'RevealMarkdown',
+      fileName: appendExtension,
+    },
+  },
+  plugins: [createPluginDts('markdown')],
+});