update packages and add valign

scripts/reveal.js/vite.config.ts

@@ -0,0 +1,58 @@
+import { resolve } from 'path';
+import { ModuleFormat } from 'rollup';
+import { defineConfig } from 'vite';
+import dts from 'vite-plugin-dts';
+
+export const appendExtension = (format: ModuleFormat, name: String): string => {
+	if (format === 'es') {
+		return `${name}.mjs`;
+	} else {
+		return `${name}.js`;
+	}
+};
+
+export default defineConfig({
+	server: {
+		port: Number(process.env.npm_config_port || 8000),
+	},
+	build: {
+		target: ['es2015'],
+		emptyOutDir: true,
+		lib: {
+			formats: ['es', 'umd'],
+			entry: resolve(__dirname, 'js/index.ts'),
+			name: 'Reveal',
+			fileName: (format, entryName) => {
+				return appendExtension(format, 'reveal');
+			},
+		},
+		rollupOptions: {
+			output: {
+				assetFileNames: 'reveal.[ext]',
+			},
+		},
+	},
+	resolve: {
+		alias: {
+			// Matches the exported paths in package.json
+			'reveal.js/plugin': '/plugin',
+			'reveal.js': '/js',
+			'reveal.css': '/css/reveal.scss',
+		},
+	},
+	plugins: [
+		dts({
+			insertTypesEntry: true,
+			rollupTypes: false,
+			exclude: ['**/index.ts'],
+			copyDtsFiles: true
+		}),
+	],
+	css: {
+		preprocessorOptions: {
+			scss: {
+				api: 'modern-compiler',
+			},
+		},
+	},
+});