diff --git a/src/@types/index.d.ts b/src/@types/index.d.ts
deleted file mode 100644
index 1bc27c0..0000000
--- a/src/@types/index.d.ts
+++ /dev/null
@@ -1,15 +0,0 @@
-type DataOption = Record<string, any>
-type CustomOption = Record<string, any>
-type PropertyOption = Record<string, AllProperty>
-type MethodOption = Record<string, (...args: any[]) => any>
-
-type PageOptions<
-  TData extends DataOption,
-  TCustom extends CustomOption
-> = WechatMiniprogram.Page.Options<TData, TCustom>
-
-type ComponentOptions<
-  TData extends DataOption,
-  TProperty extends PropertyOption,
-  TMethod extends MethodOption
-> = WechatMiniprogram.Component.Options<TData, TProperty, TMethod>
diff --git a/src/observer.ts b/src/observer.ts
index 552edab..eb505d9 100644
--- a/src/observer.ts
+++ b/src/observer.ts
@@ -3,8 +3,11 @@ import { is, toData } from './utils'
 import diff from './diff'
 
 const observer = {
-  page: <TData extends DataOption, TCustom extends CustomOption>(
-    options: PageOptions<TData, TCustom>
+  page: <
+    TData extends WechatMiniprogram.Page.DataOption,
+    TCustom extends WechatMiniprogram.Page.CustomOption
+  >(
+    options: WechatMiniprogram.Page.Options<TData, TCustom>
   ) => {
     let dispose: IReactionDisposer
 
@@ -36,11 +39,11 @@ const observer = {
   },
 
   component: <
-    TData extends DataOption,
-    TProperty extends PropertyOption,
-    TMethod extends MethodOption
+    TData extends WechatMiniprogram.Component.DataOption,
+    TProperty extends WechatMiniprogram.Component.PropertyOption,
+    TMethod extends WechatMiniprogram.Component.MethodOption
   >(
-    options: ComponentOptions<TData, TProperty, TMethod>
+    options: WechatMiniprogram.Component.Options<TData, TProperty, TMethod>
   ) => {
     let dispose: IReactionDisposer