diff --git a/packages/example/src/components/DragAndDrop.tsx b/packages/example/src/components/DragAndDrop.tsx
index b485f5a..20232bc 100644
--- a/packages/example/src/components/DragAndDrop.tsx
+++ b/packages/example/src/components/DragAndDrop.tsx
@@ -1,10 +1,11 @@
+import { PTB_SCHEME } from '@zktx.io/ptb-builder';
 import React, { useState } from 'react';
 
 export const DragAndDrop = ({
   onDrop,
   onChancel,
 }: {
-  onDrop: (data: object) => void;
+  onDrop: (data: PTB_SCHEME) => void;
   onChancel: () => void;
 }) => {
   const [isVisible, setIsVisible] = useState(true);
@@ -26,7 +27,7 @@ export const DragAndDrop = ({
             const json = JSON.parse(e.target?.result as string);
             onDrop(json);
             setIsVisible(false);
-          } catch (error) {
+          } catch {
             setMessage('Invalid JSON file.');
           }
         };
diff --git a/packages/example/src/pages/editor.tsx b/packages/example/src/pages/editor.tsx
index 2587800..9be44ad 100644
--- a/packages/example/src/pages/editor.tsx
+++ b/packages/example/src/pages/editor.tsx
@@ -53,9 +53,9 @@ export const Editor = () => {
     }
   };
 
-  const handleDrop = (ptb: any) => {
-    setNetwork((ptb as any).network);
-    ctx.selectNetwork((ptb as any).network);
+  const handleDrop = (ptb: PTB_SCHEME) => {
+    setNetwork(ptb.network || NETWORK);
+    ctx.selectNetwork(ptb.network || NETWORK);
     setPtb(JSON.stringify(ptb));
   };
 
@@ -69,8 +69,9 @@ export const Editor = () => {
             network={network}
             excuteTx={excuteTx}
             restore={ptb && JSON.parse(ptb)}
-            update={(value: PTB_SCHEME) => {
-              // console.log(value);
+            // eslint-disable-next-line @typescript-eslint/no-unused-vars
+            update={(_value: PTB_SCHEME) => {
+              // console.log(_value);
             }}
             options={{
               canEdit: true,
diff --git a/packages/example/src/pages/viewer.tsx b/packages/example/src/pages/viewer.tsx
index 90f0e09..def0fed 100644
--- a/packages/example/src/pages/viewer.tsx
+++ b/packages/example/src/pages/viewer.tsx
@@ -1,6 +1,6 @@
 import { useEffect, useRef, useState } from 'react';
 
-import { PTBBuilder } from '@zktx.io/ptb-builder';
+import { PTB_SCHEME, PTBBuilder } from '@zktx.io/ptb-builder';
 import { enqueueSnackbar } from 'notistack';
 import queryString from 'query-string';
 import { useLocation } from 'react-router-dom';
@@ -31,8 +31,9 @@ export const Viewer = () => {
           canEdit: false,
           themeSwitch: true,
         }}
-        update={(value: any) => {
-          // console.log(value);
+        // eslint-disable-next-line @typescript-eslint/no-unused-vars
+        update={(_value: PTB_SCHEME) => {
+          // console.log(_value);
         }}
         enqueueToast={(message, options) => enqueueSnackbar(message, options)}
       />