如何计算和检测PanResponder事件？

我漂亮的新的动画和手势的处理程序。 我读取文件的官方反应机动画和我发现一段对这种代码，可以让你走动的蓝箱。

https://reactnative.dev/docs/animations

import React, { useRef } from "react";
import { Animated, View, StyleSheet, PanResponder, Text } from "react-native";

const App = () => {
  const pan = useRef(new Animated.ValueXY()).current;
  const panResponder = useRef(
    PanResponder.create({
      onMoveShouldSetPanResponder: () => true,
      onPanResponderMove: Animated.event([
        null,
        { dx: pan.x, dy: pan.y }
      ]),
      onPanResponderRelease: () => {
        Animated.spring(pan, { toValue: { x: 0, y: 0 } }).start();
      }
    })
  ).current;

  return (
    <View style={styles.container}>
      <Text style={styles.titleText}>Drag & Release this box!</Text>
      <Animated.View
        style={{
          transform: [{ translateX: pan.x }, { translateY: pan.y }]
        }}
        {...panResponder.panHandlers}
      >
        <View style={styles.box} />
      </Animated.View>
    </View>
  );
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    alignItems: "center",
    justifyContent: "center"
  },
  titleText: {
    fontSize: 14,
    lineHeight: 24,
    fontWeight: "bold"
  },
  box: {
    height: 150,
    width: 150,
    backgroundColor: "blue",
    borderRadius: 5
  }
});

export default App;

然而，我要到控制台。日志或做sone计算时panresponder移动，所以我试图修改我的opPanResponderMove但是蓝色的盒子不再动了. 我想知道为什么吗？

我的修改的代号：

onPanResponderMove: (event, gestureState) => {
        console.log(event);
        console.log(gestureState);
        Animated.event([
            null,
            { dx: pan.x, dy: pan.y }
          ])
      },