diff --git a/docs/todo/core.md b/docs/todo/core.md
index b859d39..7362726 100644
--- a/docs/todo/core.md
+++ b/docs/todo/core.md
@@ -1,5 +1,6 @@
 # @idraw/core
 
+* [] License text in JS result
 * [] Options default data
 * [] Support gradient color
 * [] Listen keyboard action
diff --git a/package.json b/package.json
index d9c3ee0..387f289 100644
--- a/package.json
+++ b/package.json
@@ -27,6 +27,7 @@
     "@babel/preset-typescript": "^7.13.0",
     "@microsoft/api-extractor": "^7.13.2",
     "@rollup/plugin-node-resolve": "^11.2.1",
+    "@rollup/pluginutils": "^4.1.1",
     "@types/jest": "^26.0.23",
     "@typescript-eslint/eslint-plugin": "^4.25.0",
     "@typescript-eslint/parser": "^4.25.0",
@@ -50,7 +51,9 @@
     "postcss": "^8.2.9",
     "puppeteer": "^8.0.0",
     "rollup": "^2.40.0",
+    "rollup-plugin-cleanup": "^3.2.1",
     "rollup-plugin-postcss": "^4.0.0",
+    "rollup-plugin-terser": "^7.0.2",
     "rollup-plugin-typescript2": "^0.30.0",
     "serve-handler": "^6.1.3",
     "ts-node": "^9.1.1",
diff --git a/scripts/rollup.config.js b/scripts/rollup.config.js
index b839d4d..394ce2c 100644
--- a/scripts/rollup.config.js
+++ b/scripts/rollup.config.js
@@ -1,9 +1,12 @@
 const path = require('path');
 const typescript = require('rollup-plugin-typescript2');
+const { terser } = require('rollup-plugin-terser');
+const cleanup = require('rollup-plugin-cleanup');
 const { nodeResolve } = require('@rollup/plugin-node-resolve');
 const { getTargetPackage } = require('./config');
 const dtsPlugin = require('./util/dts-plugin');
 const stylePlugin = require('./util/style-plugin');
+// const cleanPlugin = require('./util/clean-plugin');
 
 const resolveFile = function(names = []) {
   return path.join(__dirname, '..', 'packages', ...names)
@@ -58,8 +61,31 @@ function createConfigItem(params) {
       exports
     }, 
     plugins: [
-      ...[stylePlugin(), nodeResolve(), typescript()],
+      ...[
+        stylePlugin(),
+        nodeResolve(),
+        typescript({
+          tsconfig: path.resolve(__dirname, '..', 'tsconfig.json'),
+          tsconfigOverride: {}
+        }),
+      ],
       ...plugins,
+      ...[
+        // cleanPlugin({
+        //   sourcemap: process.env.NODE_ENV === 'development',
+        // }),
+        // terser({
+        //   output: {
+        //     beautify: true,
+        //     // comments: false,
+        //     // indent_level: 2,
+        //     // quote_style: 3,
+        //   }
+        // })
+        cleanup({
+          comments: 'none',
+        }),
+      ]
     ],
   };
 }
diff --git a/scripts/util/clean-plugin.js b/scripts/util/clean-plugin.js
new file mode 100644
index 0000000..aa91b67
--- /dev/null
+++ b/scripts/util/clean-plugin.js
@@ -0,0 +1,39 @@
+const extname = require("path").extname;
+const { createFilter } = require('@rollup/pluginutils');
+const MagicString = require('magic-string');
+
+module.exports = function cleanPlugin(options = {}) {
+  const filter = createFilter(options.include, options.exclude);
+  const sourcemap = options.sourcemap === true;
+
+	return {
+		name: 'clean-plugin',
+
+		transform (code, id) {
+      if (!filter(id) || !(['.js', '.ts'].indexOf(extname(id)) >= 0)) return;
+
+      let codeStr = `${code}`;
+      const magic = new MagicString(codeStr);
+      if (sourcemap === true) {
+        codeStr = codeStr.replace(/\/\*\!([^\\]+)\*\//gi, function(match, offset) {
+          const start = offset;
+          const end = offset + match.length;
+          magic.overwrite(start, end, '');
+          return '';
+        });
+      }
+      const resultCode = magic.toString();
+      let resultMap = false;
+      if (sourcemap === true) {
+        resultMap = magic.generateMap({
+          hires: true,
+        });
+      }
+			return {
+				code: resultCode,
+				map: resultMap,
+      };
+    }
+    
+	};
+}
\ No newline at end of file
diff --git a/scripts/util/dts-plugin.js b/scripts/util/dts-plugin.js
index 0001ccf..3380eca 100644
--- a/scripts/util/dts-plugin.js
+++ b/scripts/util/dts-plugin.js
@@ -26,7 +26,7 @@ module.exports = function myPlugin(pkgName) {
       if (extractorResult.succeeded) {
         // concat additional d.ts to rolled-up dts
         const typesDir = path.resolve(pkgDir, 'types')
-        if (await fs.exists(typesDir)) {
+        if (fs.existsSync(typesDir)) {
           const dtsPath = path.resolve(pkgDir, pkg.types)
           const existing = await fs.readFile(dtsPath, 'utf-8')
           const typeFiles = await fs.readdir(typesDir)
diff --git a/tsconfig.json b/tsconfig.json
index bd40edc..55a426b 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -13,7 +13,7 @@
     "experimentalDecorators": true,
     "resolveJsonModule": true,
     "esModuleInterop": true,
-    "removeComments": false,
+    "removeComments": true,
     "jsx": "preserve",
     "lib": ["ESNext", "dom"],
     "rootDir": ".",