fix: SlideToConfirm pure PanResponder+Animated - no Reanimated/RNGH (Expo Go compat)

components/SlideToConfirm.tsx

@@ -1,16 +1,16 @@
 /**
- * SlideToConfirm — No RNGH dependency.
- * Uses Reanimated useSharedValue (JSI-direct, sets on UI thread immediately)
- * + onTouchStart/Move/End on the handle for gesture capture.
+ * SlideToConfirm — pure RN, no RNGH, no Reanimated.
+ * PanResponder on handle + Animated(useNativeDriver:false).
  */
 import { useRef } from 'react';
-import { StyleSheet, Text, View, ViewStyle } from 'react-native';
-import Animated, {
-  runOnJS,
-  useAnimatedStyle,
-  useSharedValue,
-  withSpring,
-} from 'react-native-reanimated';
+import {
+  Animated,
+  PanResponder,
+  StyleSheet,
+  Text,
+  View,
+  ViewStyle,
+} from 'react-native';
 
 interface Props {
   onConfirm: () => void;
@@ -20,66 +20,82 @@ interface Props {
 }
 
 const HANDLE_SIZE = 56;
-const THRESHOLD   = 0.80; // 80% of track
+const THRESHOLD   = 0.80;
 
 export function SlideToConfirm({ onConfirm, label = 'Slide to confirm', disabled = false, style }: Props) {
-  const trackWidth   = useRef(0);
-  const startX       = useRef(0);
-  const confirmed    = useRef(false);
-  const translateX   = useSharedValue(0);
+  const trackWidth = useRef(0);
+  const confirmed  = useRef(false);
+  const translateX = useRef(new Animated.Value(0)).current;
 
-  const handleStyle = useAnimatedStyle(() => ({
-    transform: [{ translateX: translateX.value }],
-  }));
+  const panResponder = useRef(
+    PanResponder.create({
+      onStartShouldSetPanResponder: () => !disabled,
+      onMoveShouldSetPanResponder:  () => !disabled,
+      onPanResponderGrant: () => {
+        confirmed.current = false;
+        (translateX as any).setOffset((translateX as any)._value);
+        translateX.setValue(0);
+      },
+      onPanResponderMove: (_, gs) => {
+        const maxX  = Math.max(trackWidth.current - HANDLE_SIZE - 6, 1);
+        const clamped = Math.min(Math.max(gs.dx, 0), maxX);
+        translateX.setValue(clamped - (translateX as any)._offset);
 
-  const labelStyle = useAnimatedStyle(() => {
-    const maxX  = Math.max(trackWidth.current - HANDLE_SIZE, 1);
-    const ratio = translateX.value / maxX;
-    return { opacity: 1 - ratio * 1.5 };
+        if (!confirmed.current && clamped / maxX >= THRESHOLD) {
+          confirmed.current = true;
+          (translateX as any).flattenOffset();
+          Animated.spring(translateX, {
+            toValue: maxX,
+            useNativeDriver: false,
+            damping: 18,
+            stiffness: 220,
+          }).start();
+          onConfirm();
+        }
+      },
+      onPanResponderRelease: () => {
+        (translateX as any).flattenOffset();
+        if (!confirmed.current) {
+          Animated.spring(translateX, {
+            toValue: 0,
+            useNativeDriver: false,
+            damping: 18,
+            stiffness: 220,
+          }).start();
+        }
+      },
+      onPanResponderTerminate: () => {
+        (translateX as any).flattenOffset();
+        if (!confirmed.current) {
+          Animated.spring(translateX, {
+            toValue: 0,
+            useNativeDriver: false,
+          }).start();
+        }
+      },
+    })
+  ).current;
+
+  const maxXForOpacity = Math.max(trackWidth.current - HANDLE_SIZE - 6, 1);
+  const labelOpacity = translateX.interpolate({
+    inputRange:  [0, maxXForOpacity > 0 ? maxXForOpacity * 0.6 : 1],
+    outputRange: [1, 0],
+    extrapolate: 'clamp',
   });
 
-  const onTouchStart = (e: any) => {
-    if (disabled) return;
-    confirmed.current = false;
-    startX.current = e.nativeEvent.pageX - translateX.value;
-  };
-
-  const onTouchMove = (e: any) => {
-    if (disabled) return;
-    const maxX  = Math.max(trackWidth.current - HANDLE_SIZE, 1);
-    const raw   = e.nativeEvent.pageX - startX.current;
-    const clamped = Math.min(Math.max(raw, 0), maxX);
-    translateX.value = clamped;
-
-    if (!confirmed.current && clamped / maxX >= THRESHOLD) {
-      confirmed.current = true;
-      translateX.value = withSpring(maxX, { damping: 18, stiffness: 220 });
-      runOnJS(onConfirm)();
-    }
-  };
-
-  const onTouchEnd = () => {
-    if (disabled || confirmed.current) return;
-    translateX.value = withSpring(0, { damping: 18, stiffness: 220 });
-  };
-
   return (
     <View
       style={[styles.track, disabled && styles.trackDisabled, style]}
       onLayout={e => { trackWidth.current = e.nativeEvent.layout.width; }}
     >
-      {/* Label fades as handle moves right */}
-      <Animated.View style={[StyleSheet.absoluteFill, styles.labelWrap, labelStyle]} pointerEvents="none">
+      <Animated.View style={[StyleSheet.absoluteFill, styles.labelWrap, { opacity: labelOpacity }]} pointerEvents="none">
         <Text style={styles.label}>{label}</Text>
       </Animated.View>
 
-      {/* Sliding handle */}
       <Animated.View
-        style={[styles.handle, disabled && styles.handleDisabled, handleStyle]}
-        onTouchStart={onTouchStart}
-        onTouchMove={onTouchMove}
-        onTouchEnd={onTouchEnd}
-        onTouchCancel={onTouchEnd}
+        style={[styles.handle, disabled && styles.handleDisabled, { transform: [{ translateX }] }]}
+        {...panResponder.panHandlers}
+        collapsable={false}
       >
         <Text style={styles.arrow}>›</Text>
       </Animated.View>
@@ -95,13 +111,8 @@ const styles = StyleSheet.create({
     justifyContent: 'center',
     overflow: 'hidden',
   },
-  trackDisabled: {
-    backgroundColor: '#94A3B8',
-  },
-  labelWrap: {
-    alignItems: 'center',
-    justifyContent: 'center',
-  },
+  trackDisabled: { backgroundColor: '#94A3B8' },
+  labelWrap: { alignItems: 'center', justifyContent: 'center' },
   label: {
     color: 'rgba(255,255,255,0.85)',
     fontSize: 15,
@@ -122,9 +133,7 @@ const styles = StyleSheet.create({
     shadowRadius: 4,
     elevation: 4,
   },
-  handleDisabled: {
-    backgroundColor: '#E2E8F0',
-  },
+  handleDisabled: { backgroundColor: '#E2E8F0' },
   arrow: {
     fontSize: 28,
     color: '#0891B2',