diff --git a/.npmrc b/.npmrc
new file mode 100644
index 0000000..43c97e7
--- /dev/null
+++ b/.npmrc
@@ -0,0 +1 @@
+package-lock=false
diff --git a/examples/popup.tsx b/examples/popup.tsx
index 7000a0d..92bef30 100644
--- a/examples/popup.tsx
+++ b/examples/popup.tsx
@@ -5,8 +5,8 @@
 import 'rmc-picker/assets/index.css';
 import 'rmc-cascader/assets/index.less';
 import 'rmc-picker/assets/popup.css';
-import React from 'react';
-import ReactDOM from 'react-dom';
+import * as React from 'react';
+import * as ReactDOM from 'react-dom';
 import PopupCascader from '../src/Popup';
 import Cascader from '../src/Cascader';
 import globalData from './data';
diff --git a/examples/react-native/picker.tsx b/examples/react-native/picker.tsx
index 84916e4..e721ef2 100644
--- a/examples/react-native/picker.tsx
+++ b/examples/react-native/picker.tsx
@@ -5,7 +5,7 @@
 import Cascader from '../../src/Cascader';
 import { View, Text } from 'react-native';
 import globalData from '../data';
-import React from 'react';
+import * as React from 'react';
 
 export class PickerDemo extends React.Component<any, any> {
   onChange = (value) => {
diff --git a/examples/react-native/popup.tsx b/examples/react-native/popup.tsx
index ac1333e..3dfd0f9 100644
--- a/examples/react-native/popup.tsx
+++ b/examples/react-native/popup.tsx
@@ -2,7 +2,7 @@
 
 /* tslint:disable:no-console */
 
-import React from 'react';
+import * as React from 'react';
 import { View, Text, StyleSheet, TouchableHighlight } from 'react-native';
 import PopupCascader from '../../src/Popup';
 import globalData from '../data';
diff --git a/examples/simple.tsx b/examples/simple.tsx
index 1f10a70..68ff16f 100644
--- a/examples/simple.tsx
+++ b/examples/simple.tsx
@@ -3,8 +3,8 @@
 import 'rmc-picker/assets/index.css';
 import 'rmc-cascader/assets/index.less';
 import Cascader from '../src/Cascader';
-import React from 'react';
-import ReactDOM from 'react-dom';
+import * as React from 'react';
+import * as ReactDOM from 'react-dom';
 import globalData from './data';
 
 class Demo extends React.Component<any, any> {
diff --git a/package.json b/package.json
index c79d942..496779a 100644
--- a/package.json
+++ b/package.json
@@ -56,9 +56,9 @@
   },
   "devDependencies": {
     "@types/mocha": "~2.2.32",
-    "@types/react": "^15.5.0",
-    "@types/react-dom": "^15.5.0",
-    "@types/react-native": "^0.46.9",
+    "@types/react": "^16.0.0",
+    "@types/react-dom": "^16.0.0",
+    "@types/react-native": "^0.55.0",
     "create-react-class": "^15.6.0",
     "expect.js": "0.3.x",
     "fastclick": "^1.0.6",
diff --git a/src/Cascader.tsx b/src/Cascader.tsx
index 541ed34..6ddada6 100644
--- a/src/Cascader.tsx
+++ b/src/Cascader.tsx
@@ -1,4 +1,4 @@
-import React from 'react';
+import * as React from 'react';
 import arrayTreeFilter from 'array-tree-filter';
 import MultiPicker from 'rmc-picker/lib/MultiPicker';
 import Picker from 'rmc-picker/lib/Picker';
diff --git a/src/Popup.tsx b/src/Popup.tsx
index 6784a0a..bbdbd66 100644
--- a/src/Popup.tsx
+++ b/src/Popup.tsx
@@ -1,4 +1,4 @@
-import React from 'react';
+import * as React from 'react';
 import PopupPicker from 'rmc-picker/lib/Popup';
 import { IPopupPickerProps } from 'rmc-picker/lib/PopupPickerTypes';
 import { ICascaderProps, CascaderValue } from './CascaderTypes';
diff --git a/tests/popup.spec.tsx b/tests/popup.spec.tsx
index ec372ca..490fcaf 100644
--- a/tests/popup.spec.tsx
+++ b/tests/popup.spec.tsx
@@ -1,8 +1,8 @@
 import expect from 'expect.js';
-import React from 'react';
-import ReactDOM from 'react-dom';
+import * as React from 'react';
+import * as ReactDOM from 'react-dom';
 import createReactClass from 'create-react-class';
-import TestUtils from 'react-dom/test-utils';
+import * as TestUtils from 'react-dom/test-utils';
 const Simulate = TestUtils.Simulate;
 import Cascader from '../src/Cascader';
 import PopCascader from '../src/Popup';
diff --git a/tests/simple.spec.tsx b/tests/simple.spec.tsx
index fe43218..a2f5b9a 100644
--- a/tests/simple.spec.tsx
+++ b/tests/simple.spec.tsx
@@ -1,7 +1,7 @@
 import expect from 'expect.js';
 // tslint:disable-next-line
-import React from 'react';
-import ReactDOM from 'react-dom';
+import * as React from 'react';
+import * as ReactDOM from 'react-dom';
 // const TestUtils = require('react-addons-test-utils');
 // const Simulate = TestUtils.Simulate;
 
diff --git a/tsconfig.json b/tsconfig.json
index c029023..d1795c6 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -3,7 +3,7 @@
     "strictNullChecks": true,
     "moduleResolution": "node",
     "jsx": "react",
-    "allowSyntheticDefaultImports":true,
-    "target": "es6"
+    "target": "es6",
+    "skipLibCheck": true
   }
 }
\ No newline at end of file
diff --git a/typings/custom.d.ts b/typings/custom.d.ts
index eb3eda3..d448b82 100644
--- a/typings/custom.d.ts
+++ b/typings/custom.d.ts
@@ -1,39 +1,9 @@
-declare module "rc-dialog" {
-  var Ret: any;
-  export default Ret;
-}
-
-declare module "react-hammerjs" {
-  var Ret: any;
-  export default Ret;
-}
-
-declare module "object-assign" {
-  var Ret: any;
-  export default Ret;
-}
-
 declare module "expect.js" {
   var Ret: any;
   export default Ret;
 }
 
-declare module "react-native-picker-android" {
-  var Ret: any;
-  export default Ret;
-}
-
-declare module "react-addons-test-utils" {
-  var Ret: any;
-  export default Ret;
-}
-
 declare module "array-tree-filter" {
   var Ret: any;
   export default Ret;
 }
-
-declare module "classnames" {
-  var Ret: any;
-  export default Ret;
-}