diff --git a/scripts/copy-files.js b/scripts/copy-files.js
index 99379e2..26f437e 100644
--- a/scripts/copy-files.js
+++ b/scripts/copy-files.js
@@ -43,6 +43,19 @@ const srcPath = path.join(packagePath, "./src");
 //   );
 // }
 
+async function typescriptCopy({ from, to }) {
+  if (!(await fse.exists(to))) {
+    console.warn(`path ${to} does not exists`);
+    return [];
+  }
+
+  const files = glob.sync("**/*.d.ts", { cwd: from });
+  const cmds = files.map(file =>
+    fse.copy(path.resolve(from, file), path.resolve(to, file))
+  );
+  return Promise.all(cmds);
+}
+
 async function createPackageFile() {
   const packageData = await fse.readFile(
     path.resolve(packagePath, "./package.json"),
@@ -54,7 +67,9 @@ async function createPackageFile() {
   const newPackageData = {
     ...packageDataOther,
     private: false,
-    main: "./index.js"
+    main: "./index.js",
+    //module: "./esm/index.js",
+    typings: "./index.d.ts"
   };
   const targetPath = path.resolve(buildPath, "./package.json");
 
@@ -77,6 +92,9 @@ async function run() {
   try {
     await createPackageFile();
 
+    // TypeScript
+    await typescriptCopy({ from: srcPath, to: buildPath });
+
     //await createModulePackages({ from: srcPath, to: buildPath });
   } catch (err) {
     console.error(err);
diff --git a/src/index.d.ts b/src/index.d.ts
new file mode 100644
index 0000000..25297f6
--- /dev/null
+++ b/src/index.d.ts
@@ -0,0 +1,4 @@
+import * as typeValidator from "./data/typeValidator";
+import * as localStorage from "./storage/localStorage";
+
+export { typeValidator, localStorage };