diff --git a/example/src/App.tsx b/example/src/App.tsx
index a8546cc7..3cfd2188 100644
--- a/example/src/App.tsx
+++ b/example/src/App.tsx
@@ -9,6 +9,8 @@ import {
   SkiaChart,
 } from '@wuba/react-native-echarts';
 import * as echarts from 'echarts/core';
+import type { EChartsOption } from 'echarts';
+import type { ChartElement } from '@wuba/react-native-echarts';
 import { BarChart, LineChart } from 'echarts/charts';
 import {
   TitleComponent,
@@ -31,11 +33,11 @@ echarts.use([
 const E_HEIGHT = 250;
 const E_WIDTH = Dimensions.get('screen').width;
 
-function SkiaComponent({ option }: any) {
-  const skiaRef = useRef<any>(null);
+function SkiaComponent({ option }: { option: EChartsOption }) {
+  const skiaRef = useRef<(ChartElement & any) | null>(null);
 
   useEffect(() => {
-    let chart: any;
+    let chart: echarts.EChartsType | undefined;
     if (skiaRef.current) {
       chart = echarts.init(skiaRef.current, 'light', {
         // @ts-ignore
@@ -51,11 +53,11 @@ function SkiaComponent({ option }: any) {
   return <SkiaChart ref={skiaRef} />;
 }
 
-function SvgComponent({ option }: any) {
-  const svgRef = useRef<any>(null);
+function SvgComponent({ option }: { option: EChartsOption }) {
+  const svgRef = useRef<(ChartElement & any) | null>(null);
 
   useEffect(() => {
-    let chart: any;
+    let chart: echarts.EChartsType | undefined;
     if (svgRef.current) {
       chart = echarts.init(svgRef.current, 'light', {
         renderer: 'svg',
@@ -75,29 +77,29 @@ const fontFamily = Platform.select({
 });
 const option = {
   xAxis: {
-    type: 'category',
+    type: 'category' as const,
     data: ['周一', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun'],
   },
   yAxis: {
-    type: 'value',
+    type: 'value' as const,
   },
   tooltip: {
-    trigger: 'axis',
+    trigger: 'axis' as const,
   },
   series: [
     {
       data: [120, 200, 150, 80, 70, 110, 130],
-      type: 'bar',
+      type: 'bar' as const,
     },
     {
       data: [220, 100, 180, 160, 150, 120, 110],
-      type: 'line',
+      type: 'line' as const,
     },
   ],
   textStyle: {
     fontFamily,
   },
-};
+} as EChartsOption;
 function App() {
   return (
     <View style={styles.container}>
diff --git a/src/__tests__/chart.test.tsx b/src/__tests__/chart.test.tsx
index f4b27464..f3946ca1 100644
--- a/src/__tests__/chart.test.tsx
+++ b/src/__tests__/chart.test.tsx
@@ -17,6 +17,13 @@ import SVGComponent from '../svg/svgChart';
 import { dispatchEventsToZRender } from '../components/events';
 import { SVGRenderer } from '../svg/SVGRenderer';
 import * as echarts from 'echarts/core';
+import type { EChartsType } from 'echarts/core';
+import type {
+  RNGestureHandlerGesture,
+  ChartElement,
+  DefaultRNGestures,
+  DispatchEvents,
+} from '../types';
 import { BarChart, LineChart, GraphChart, ScatterChart } from 'echarts/charts';
 import {
   PanGesture,
@@ -108,7 +115,7 @@ function getOptionTwo() {
     animation: false,
     tooltip: {},
     animationDurationUpdate: 1500,
-    animationEasingUpdate: 'quinticInOut',
+    animationEasingUpdate: 'quinticInOut' as any, // Temporarily cast to any for test
     series: [
       {
         type: 'graph',
@@ -244,8 +251,8 @@ function zoomElement(pan: ReactTestInstance, x: number, y: number) {
 }
 
 interface ChartCall {
-  call: (chart: any) => void;
-  snapshot?: (data: string) => any;
+  call: (chart: EChartsType) => void;
+  snapshot?: (data: string) => Promise<Buffer>;
 }
 
 function Chart({
@@ -255,15 +262,15 @@ function Chart({
   gesture,
   handleGesture = true,
 }: {
-  Component: React.ComponentType<any>;
+  Component: React.ComponentType<any>; // Keep as any to allow both SkiaChartProps and SVGChartProps with ref
   calls?: ChartCall[];
   useRNGH?: boolean;
-  gesture?: any;
+  gesture?: RNGestureHandlerGesture;
   handleGesture?: boolean;
 }) {
-  const ref = useRef<any>(null);
+  const ref = useRef<(ChartElement & any) | null>(null);
   useEffect(() => {
-    let chart: any;
+    let chart: EChartsType | undefined;
     if (ref.current) {
       // @ts-ignore
       chart = echarts.init(ref.current, 'light', {
@@ -273,17 +280,19 @@ function Chart({
       });
       (async () => {
         for (const call of calls) {
-          call.call(chart);
-          if (call.snapshot) {
-            await new Promise((resolve) =>
-              setTimeout(async () => {
-                const result = call.snapshot?.(chart.getDataURL());
-                if (result instanceof Promise) {
-                  await result;
-                }
-                resolve(undefined);
-              }, 0)
-            );
+          if (chart) {
+            call.call(chart);
+            if (call.snapshot) {
+              await new Promise((resolve) =>
+                setTimeout(async () => {
+                  const result = call.snapshot?.(chart!.getDataURL());
+                  if (result instanceof Promise) {
+                    await result;
+                  }
+                  resolve(undefined);
+                }, 0)
+              );
+            }
           }
         }
       })();
@@ -314,7 +323,7 @@ Components.forEach((Component) => {
           Component={Component}
           calls={[
             {
-              call: (chart: any) => {
+              call: (chart: EChartsType) => {
                 chart.setOption(getOption('line'));
               },
               snapshot,
@@ -333,13 +342,13 @@ Components.forEach((Component) => {
         <Chart
           calls={[
             {
-              call: (chart: any) => {
+              call: (chart: EChartsType) => {
                 act(() => chart.setOption(getOption()));
               },
               snapshot,
             },
             {
-              call: (chart: any) => {
+              call: (chart: EChartsType) => {
                 const id = chart.getZr().id;
                 act(() =>
                   dispatchEventsToZRender(
@@ -373,7 +382,7 @@ Components.forEach((Component) => {
           handleGesture={false}
           calls={[
             {
-              call: (chart: any) => {
+              call: (chart: EChartsType) => {
                 chart.setOption(getOption('scatter'));
               },
               snapshot,
@@ -393,7 +402,7 @@ Components.forEach((Component) => {
           Component={Component}
           calls={[
             {
-              call: (chart: any) => {
+              call: (chart: EChartsType) => {
                 chart.setOption(getOptionTwo());
               },
               snapshot,
@@ -435,7 +444,7 @@ Components.forEach((Component) => {
           useRNGH
           calls={[
             {
-              call: (chart: any) => {
+              call: (chart: EChartsType) => {
                 chart.setOption(getOptionTwo());
               },
               snapshot,
@@ -495,9 +504,12 @@ Components.forEach((Component) => {
         <RNGHChart
           Component={Component}
           useRNGH
-          gesture={(...args: any) => {
-            gesture(...args);
-            return args[0];
+          gesture={(
+            defaultGestures: DefaultRNGestures,
+            dispatchEvents: DispatchEvents
+          ) => {
+            gesture(defaultGestures, dispatchEvents);
+            return defaultGestures[0];
           }}
         />
       );
diff --git a/src/skia/graphic.tsx b/src/skia/graphic.tsx
index e7eadaf9..e26fe1b4 100644
--- a/src/skia/graphic.tsx
+++ b/src/skia/graphic.tsx
@@ -43,11 +43,13 @@ import {
 } from '@shopify/react-native-skia';
 import React from 'react';
 
-function isImageLike(val: any): val is HTMLImageElement {
-  return val && isString(val.src);
+function isImageLike(val: unknown): val is HTMLImageElement {
+  return val != null && typeof val === 'object' && isString((val as any).src);
 }
-function isCanvasLike(val: any): val is HTMLCanvasElement {
-  return val && isFunction(val.toDataURL);
+function isCanvasLike(val: unknown): val is HTMLCanvasElement {
+  return (
+    val != null && typeof val === 'object' && isFunction((val as any).toDataURL)
+  );
 }
 
 type SVGVNodeAttrs = Record<
diff --git a/src/types.ts b/src/types.ts
index 90e3fac8..9f6657d8 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -21,7 +21,7 @@ export type HandlerName =
 export type DispatchEvents = (
   types: HandlerName[],
   nativeEvent: any,
-  eventArgs?: any
+  eventArgs?: Record<string, unknown>
 ) => void;
 
 export type DefaultRNGestures = [PanGesture, PinchGesture, TapGesture];